Floor Cleaning Device

Abstract

A floor cleaning device includes a brush assembly, a frame, a clean tank, a dirty tank, a suction assembly, a battery assembly and a control system. The frame is connected with the brush assembly. The clean tank is arranged on the frame and in a fluid communication with the brush assembly. The dirty tank is arranged on the frame and connected with the brush assembly. The suction assembly is arranged on the frame and connected with the dirty tank to form a negative pressure in the dirty tank and recover sewage after cleaning to the dirty tank. The battery assembly is arranged on the frame. The battery assembly at least includes a first/second battery pack. The control system controls the clean tank to supply water to the brush assembly and controls the suction assembly to recycle the sewage to the dirty tank.

Description

TECHNICAL FIELD

The disclosure relates a technical field of floor cleaning devices, specifically relates to a floor cleaning device.

BACKGROUND

Floor cleaning device is a kind of device used to clean the ground, which is loved by the majority of users because of its high cleaning efficiency, especially the wireless floor cleaning device products, which are favored by users because of the use of battery power and no power cord when used.

At present, most of the floor cleaning devices on the market use one battery pack, and the battery pack can only be charged by the adapter configured by the floor cleaning device itself. Since the power of the battery pack is limited, the use time is short, when cleaning a large area, the battery pack may run out of power and the cleaning may not be completed in one go. It takes several hours to charge the floor cleaning device, and frequent charging will reduce the cleaning efficiency of the floor cleaning device and affect the user experience.

SUMMARY

The disclosure provides a floor cleaning device to improve a problem that the floor cleaning device needs frequent charging due to limited power of a battery pack.

The disclosure provides the floor cleaning device, which includes a brush assembly, a frame, a clean tank, a dirty tank, a suction assembly, a battery assembly and a control system. The frame is connected with the brush assembly. The clean tank is arranged on the frame and is in a fluid communication with the brush assembly. The dirty tank is arranged on the frame and is connected with the brush assembly. The suction assembly is arranged on the frame and is connected with the dirty tank. The battery assembly is arranged on the frame. The battery assembly at least includes a first battery pack and a second battery pack. The control system is configured to control the clean tank to supply water to the brush assembly and control the suction assembly to recycle the sewage cleaned by the floor brush assembly to the dirty tank.

In an embodiment of the disclosure, at least one of the first battery pack and the second battery pack is chargeable independently of the floor cleaning device, the first battery pack is charged independently of the floor cleaning device, the second battery pack is charged through an adapter of the floor cleaning device, the control system controls the first battery pack to be discharged prior to the second battery pack, and at least one of the first battery pack and the second battery pack is detachably mounted on the frame.

In an embodiment of the disclosure, the first battery pack and the second battery pack are arranged on a same side of the frame, the first battery pack is arranged above the second battery pack, the first battery pack is assembled and disassembled along a longitudinal axis direction of the floor cleaning device, the second battery pack is assembled and disassembled along a direction transverse to the longitudinal axis direction of the floor cleaning device, one side of the frame is provided with a first battery accommodating cavity and a second battery accommodating cavity, a bottom of the first battery accommodating cavity is provided with a first connecting terminal matched with the first battery pack, the second battery accommodating cavity is provided with a second connecting terminal matched with the second battery pack, and the first connecting terminal and the second connecting terminal are electrically connected with the control system respectively.

In an embodiment of the disclosure, a bottom of a first battery accommodating cavity is provided with a pin and a latch, the first battery pack is inserted and mounted in the first accommodating cavity and is locked through the latch, an outside of the second battery pack is provided with a battery pack inner bracket and a battery pack outer bracket, the battery pack outer bracket wraps on an outside of the battery pack inner bracket, a top end of the battery pack outer bracket is provided with a pressing device, and the second battery pack is clamped in a second battery accommodating cavity through the pressing device.

In an embodiment of the disclosure, the clean tank, the dirty tank and the suction assembly are arranged on one side of the frame opposite to the battery assembly, at least one of the first battery pack and the second battery pack is configured to supply power to a second device, and at least one of the first battery pack and the second battery pack is provided with a USB port and/or a TYPE-C port.

In an embodiment of the disclosure, a top of the dirty tank is provided with an air suction port, the dirty tank is communicated with the suction assembly through the air suction port, and an inside of the dirty tank is provided with an air passage communicated with the brush assembly.

In an embodiment of the disclosure, the clean tank includes a fluid tank and a valve assembly. The fluid tank is provided with an outlet. The valve assembly is mounted on the outlet, and includes a control structure and a leak-proof structure. The control structure is arranged in the outlet. The leak-proof structure is connected with the control structure, and provided with an opening-closing unit. Wherein, the clean tank is convertible between a first state and a second state: in the first state, the clean tank is mounted on the frame, the opening-closing unit and the control structure are opened by the frame, and the fluid tank provides fluid to the brush assembly; in the second state, the clean tank is separated from the frame, the control structure is reset, the opening-closing unit is automatically closed, and the fluid tank stops providing fluid to the brush assembly.

In an embodiment of the disclosure, the leak-proof structure is provided with a cavity space communicated with the outlet, the control structure includes a valve pushing rod, a spring, a scaling sleeve and a pushing rod cap, the pushing rod cap is connected with the leak-proof structure, the valve pushing rod is movable between the pushing rod cap and the cavity space, the spring is mounted on an end of the valve pushing rod towards the pushing rod cap, the scaling sleeve is mounted at one end of the valve pushing rod towards the cavity space, the frame is provided with a push rod, and a size of the opening-closing unit matches a size of the push rod.

In an embodiment of the disclosure, the valve pushing rod is provided with a protruding flange extending outward along a radial direction, the protruding flange is arranged between the spring and the sealing sleeve, the cavity space includes a first cavity space to accommodate the valve pushing rod and a second cavity space to contain leakage, and a supporting structure of the valve pushing rod is arranged between the first cavity space and the second cavity space.

In an embodiment of the disclosure, the supporting structure is provided with a supporting inclined plane, the supporting inclined plane and the sealing sleeve are in an interference fit under an effect of the spring to form a sealing structure, the opening-closing unit is arranged at one end of the second cavity space away from the first cavity space, a returning distance of the valve pushing rod in the first cavity space is less than a distance from the supporting structure to the opening-closing unit, and a central axis of the valve pushing rod is on a same straight line with a center line of the cavity space.

In an embodiment of the disclosure, the clean tank includes the fluid tank, the valve assembly, and the control structure. The fluid tank is provided with the outlet. The control structure is arranged in the outlet. The valve assembly is mounted on the outlet, and includes a leak-proof structure, a bracket, an elastic protective cover and the opening-closing unit. The leak-proof structure is connected with the control structure. The bracket is provided with a first cavity space to accommodate the control structure therein. The clastic protective cover is connected with the bracket, and at least partially located below the bracket. A second cavity space to store leakage is arranged inside a part of the elastic protective cover that is located below the bracket. The opening-closing unit is arranged at one end of the second cavity space away from the bracket, and includes a cutting slit or a plurality of cross cutting slits arranged on the clastic protective cover.

In an embodiment of the disclosure, the cutting slit is in a cross-type structure, one end of the clastic protective cover away from the bracket is provided with a concavity to an inside of the cavity space, the cutting slit is arranged on the concavity, a spacing is arranged between an end part of the cutting slit and an edge of the elastic protective cover, the valve assembly further includes a valve cover, and the control structure and the leak-proof structure are fixed on the outlet of the fluid tank through the valve cover.

In an embodiment of the disclosure, the clean tank includes a sewage recovery passage and a handle assembly. The sewage recovery passage is located in the dirty tank. The handle assembly is arranged on the frame. Wherein, the brush assembly is arranged at a bottom of the frame and includes a housing, a rolling brush assembly and a driving device. The rolling brush assembly is mounted in the housing and is driven by the driving device. The housing includes a rear housing, an upper cover and a front cover, the upper cover and the rear housing are mutually assembled and enclosed to form a first housing cavity. The driving device is housed in the first housing cavity, an accommodating cavity is arranged at a position of the rear housing corresponding to the front cover position, the rolling brush assembly is housed in the accommodating cavity and is covered by the front cover, the rear housing includes a separating wall separating the first housing cavity from the accommodating cavity, a first through hole and a second through hole are arranged on the separating wall, the first through hole is configured to communicate the first housing cavity with the accommodating cavity, and the second through hole is configured to communicate the accommodating cavity with the sewage recovery passage.

In an embodiment of the disclosure, the first housing cavity is enclosed by four housing walls arranged in the rear housing, the housing wall arranged close to the separating wall is defined as a first housing wall, an opening is arranged on the first housing wall, the opening is communicated with the first through hole, and the opening is concave downward from a top of the first housing wall.

In an embodiment of the disclosure, the rear housing further includes a connecting wall connecting the separating wall with the first housing wall, there are two connecting walls, an airflow passage is formed between the opening and the first through hole, the two connecting walls are arranged on two sides of the first through hole, and in a vertical direction, the opening is located at a top of the airflow passage, and the first through hole is located at a bottom of the airflow passage.

In an embodiment of the disclosure, the second through hole is arranged in a middle position of the separating wall, the first through hole is located at a side of the second through hole, a suction hood is further arranged in the rear housing, a first end of the suction hood is communicated with the second through hole, a second end of the suction hood is communicated with the sewage recovery passage, and the second through hole is configured to enable sewage and sewage gas in the accommodating cavity to enter the suction hood, and enter the dirty tank through the sewage recovery passage.

In an embodiment of the disclosure, the suction assembly is arranged above the dirty tank and configured to form a negative pressure inside the dirty tank, the sewage and sewage gas in the accommodating cavity enter the suction hood through the second through hole and enter the dirty tank through the sewage recovery passage, a top of the dirty tank is provided with a gas filter, the gas filter is configured to filter the sewage gas, and the gas filter is a HEPA filter.

In an embodiment of the disclosure, the clean tank further includes the handle assembly. The handle assembly is arranged on the frame. Wherein, the brush assembly is arranged at a bottom of the frame, the dirty tank includes a box, a cover body arranged and covering at a top of the box and a filter frame housed in the box, the filter frame includes a connecting frame, a float slidably connected with the connecting frame and a filter plate assembled and fixed on the connecting frame, a protruding first mounting block is arranged at a first side of the connecting frame, a protruding second mounting block is arranged at a second side of the connecting frame arranged oppositely, the filter plate is correspondingly provided with a first matching block and a second matching block, after the first mounting block is clamped and matched with the first matching block, the filter plate is rotated, so that the second matching block is buckled to the second mounting block, the filter plate is rotated until a top of the first mounting block abuts against the first matching block and a bottom of the second matching block abuts against the second mounting block.

In an embodiment of the disclosure, the first mounting block is strip-shaped, the first matching block is provided with a first matching groove therein, and the first mounting block is housed in the first matching groove and abuts against a top inner side wall of the first matching groove, the second mounting block is step-shaped, and includes a first mounting part protruding outwards from the connecting frame and a second mounting part protruding outwards from the first mounting part, an upper surface of the second mounting part is lower than an upper surface of the first mounting part, a second matching groove is arranged in the second matching block, the first mounting part is housed in the second matching groove, and a lower surface of the second matching block abuts against the upper surface of the second mounting part.

In an embodiment of the disclosure, the upper surface of the first mounting part is lower than an upper surface of the first mounting block, an inclined first guiding surface is arranged at a top outer side of the first mounting block to guide the first mounting block to be inserted into the first matching groove, an inclined second guiding surface is arranged at a top outer side of the first mounting part to guide the first mounting part to be inserted the second matching groove, and the upper surface of the second mounting part is a flat plane.

In an embodiment of the disclosure, the connecting frame is provided with a flat-plate-shaped mounting wall, and a first side wall and a second side wall perpendicular to two edges of two sides of the mounting wall, the first side wall and the second side wall are arranged opposite to each other and define a second housing cavity together with the mounting wall, the float is housed in the second housing cavity, and the filter plate is assembled on one side of the mounting wall away from the second housing cavity.

In an embodiment of the disclosure, the first side wall and the second side wall are both provided with sliding grooves, two sides of the float are provided with sliding blocks, the sliding blocks are housed in the sliding grooves and are capable of sliding up and down along the sliding grooves, each side of the float is provided with two sliding blocks, wherein, the sliding block located at a bottom is configured to abut against a bottom inner side wall of the sliding groove, the sliding block at a top is configured to abut against a top inner side wall of the sliding groove, so as to limit a sliding displacement of the float on the connecting frame, and in an extension direction of the first side wall and the second side wall, the sliding groove is narrow at a top and wide at a bottom.

The battery assembly of the floor cleaning device of some embodiments of the disclosure includes at least two battery packs, and an arrangement of a plurality of battery packs may increase a power of the battery assembly and prolong a battery life of the floor cleaning device. At least one battery pack may be charged and discharged independently on an outside of the floor cleaning device, which is equivalent to a portable power storage device. When the floor cleaning device works, the battery pack may be controlled by the control system to supply power first, and then another battery pack is switched to continue to supply power when a power release of the first battery pack is completed. The first battery pack may be disassembled from the floor cleaning device and is charged by a universal adapter. A cleaning work of the floor cleaning device is not affected during its charging process, and cleaning efficiency of the floor cleaning device is improved. In addition, the floor cleaning device of the disclosure arranges the battery assemblies up and down, and the clean tank, the suction assembly and the dirty tank are arranged on one side opposite to the battery assembly, so that a center of gravity of the floor cleaning device is reasonable and an operation is more comfortable.

Further, the clean tank of the disclosure is provided with the leak-proof structure on the valve assembly, and residual liquid in the fluid tank is stored in the cavity space of the leak-proof structure by using the opening-closing unit that can be automatically closed on the leak-proof structure, so as to prevent residual liquid from falling to the ground or human body due to a failure to close the valve in time when the fluid tank is pulled out. The first cavity space for accommodating the valve pushing rod and the second cavity space for storing the residual liquid are arranged in the leak-proof structure. The valve pushing rod may move up and down between the first cavity space and the pushing rod cap. When it moves upwards under an action of an external force, a gap for the fluid to pass through is formed between an inner side of the leak-proof structure and the valve pushing rod. After removing the external force, under an clastic action of the spring, the valve pushing rod moves down rapidly, so that the scaling sleeve and the supporting structure are in an interference fit to form the sealing structure, which prevents the fluid from flowing downward. A maximum distance that the valve pushing rod may move in the first cavity space is less than a length of the second cavity space, so that the sealing sleeve on the valve pushing rod may form a sealing with the supporting structure before the push rod is completely withdrawn from the second cavity space, and the fluid cannot escape. Even if there is only a little, it will be stored in the second cavity space, and when used again, the liquid in the second cavity space will be used normally or discharged through a waterway. The leak-proof structure adopts a combination of the bracket and the clastic protective cover. The bracket is used to support the valve pushing rod and form a moving space of the valve pushing rod inside the bracket. The opening-closing unit is formed by the cutting slit at a bottom of the elastic protective cover, and elastic properties of the clastic protective cover are used to realize an automatic closing of the opening-closing unit. The bottom of the elastic protective cover is concave inside, the liquid inside it is collected to both sides, and the cutting slit is arranged in the concavity, which is conducive to the leakage to be stored in an inner cavity of the elastic protective cover.

Further, the floor cleaning device of the disclosure is provided with the separating wall between the first housing cavity and the accommodating cavity of the rear housing, and the first through hole and the second through hole are arranged on the separating wall, so that the first through hole may be used to communicate the first housing cavity with the accommodating cavity, and the second through hole may be used to communicate the accommodating cavity with the sewage recovery passage simultaneously. Then exhaust gas discharged by the driving device can enter the accommodating cavity through the first through hole, then enter the sewage recovery passage through the second through hole for filtration, and then discharged, which not only solves a problem of air pollution, but also air blown out by the driving device may increase a suction power of the floor cleaning device, and achieves a better cleaning effect.

Further, the dirty tank of the disclosure is provided with the first mounting block and the second mounting block on the connecting frame, and the first matching block and the second matching block are correspondingly arranged on the filter plate simultaneously, so that the first mounting block may be clamped and matched with the first matching block first. Then the filter plate is rotated, the second matching block is buckled onto the second mounting block, and finally the filter plate is mounted to enable a top of the first mounting block to abut against the first matching block, and enable a bottom of the second matching block to abut against the second mounting block. At this time, an assembly of the filter plate and the connecting frame is realized. Compared with the prior art, in the dirty tank of the disclosure, the filter plate is designed to be assembled separately from the connecting frame, thereby facilitating a disassembly and cleaning, which may thoroughly clean a dirt on the connecting frame, and preventing the float from being stuck due to a secondary accumulation of the dirt.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to explain technical solutions of embodiments of the disclosure more clearly, the following will briefly introduce drawings used in a description of the embodiments or the conventional art. Obviously, the drawings in the following description are only some embodiments of the disclosure. For those of ordinary skill in the art, other drawings may be obtained based on these drawings without creative work.

FIG. 1 is a schematic structural view of a floor cleaning device according to at least one embodiment of the disclosure.

FIG. 2 is an exploded view of the floor cleaning device according to at least one embodiment of the disclosure.

FIG. 3 is a cross-sectional view of the floor cleaning device after removing a handle according to at least one embodiment of the disclosure.

FIG. 4 is a schematic structural view of the floor cleaning device after removing part of assemblies according at least one embodiment of the disclosure.

FIG. 5 is a schematic view of FIG. 4 from another angle.

FIG. 6 is a schematic partial enlarged view of a first battery accommodating cavity of the floor cleaning device according to at least one embodiment of the disclosure.

FIG. 7 is a schematic enlarged view of area I in FIG. 5.

FIG. 8 is a schematic structural view of a second battery pack of the floor cleaning device according to at least one embodiment of the disclosure.

FIG. 9 is an exploded view of a clean tank of the floor cleaning device according to at least one embodiment of the disclosure.

FIG. 10 is an exploded view of a dirty tank of the floor cleaning device according to at least one embodiment of the disclosure.

FIG. 11 is an exploded view of a brush assembly of the floor cleaning device according to at least one embodiment of the disclosure.

FIG. 12 is a schematic structural view of the clean tank according to at least one embodiment of the disclosure.

FIG. 13 is a schematic mounting view of a valve of the clean tank according to at least one embodiment of the disclosure.

FIG. 14 is an exploded view of a valve assembly of the clean tank according to at least one embodiment of the disclosure.

FIG. 15 is a schematic view of a leak-proof structure of the clean tank according to at least one embodiment of the disclosure.

FIG. 16 is a cross-sectional view of a control structure of the valve assembly of the clean tank according to at least one embodiment of the disclosure.

FIG. 17 is a schematic view of the leak-proof structure of the clean tank from another angle according to at least one embodiment of the disclosure.

FIG. 18 is a cross-sectional view of the leak-proof structure of the clean tank according to at least one embodiment of the disclosure.

FIG. 19 is a schematic view of the valve assembly of the clean tank in a closing state according to at least one embodiment of the disclosure.

FIG. 20 is a schematic view of the valve assembly of the clean tank in an opening state according to at least one embodiment of the disclosure.

FIG. 21 is a partial cross-sectional view of a frame of the floor cleaning device according to at least one embodiment of the disclosure.

FIG. 22 is a matching schematic view of a machine body and the clean tank of the floor cleaning device according to at least one embodiment of the disclosure.

FIG. 23 is a schematic enlarged view of area I in FIG. 22.

FIG. 24 is a perspective view of the floor cleaning device according to at least one embodiment of the disclosure.

FIG. 25 is an exploded view of the floor cleaning device in FIG. 1.

FIG. 26 is a partial cross-sectional view of the floor cleaning device in FIG. 1 after removing the handle.

FIG. 27 is an exploded view of relevant structures in a main body assembly including the sewage recovery passage in FIG. 1.

FIG. 28 is an exploded view of FIG. 4 from another angle.

FIG. 29 is a perspective view of the brush assembly in FIG. 2.

FIG. 30 is an exploded view of the brush assembly in FIG. 6.

FIG. 31 is a perspective view of the rear housing in FIG. 7.

FIG. 32 is a schematic view of FIG. 8 from another angle.

FIG. 33 is a schematic view of FIG. 8 from a third angle.

FIG. 34 is an enlarged view of area II in FIG. 33.

FIG. 35 is a cross-sectional view of the brush assembly in FIG. 6.

FIG. 36 is an exploded view of the dirty tank in FIG. 25.

FIG. 37 is a perspective view of a filter frame in FIG. 36.

FIG. 38 is a partial exploded view of the filter frame in FIG. 37.

FIG. 39 is an exploded view of the filter frame in FIG. 38.

FIG. 40 is an enlarged view of a circled part in FIG. 39.

FIG. 41 is an exploded view of the filter frame in FIG. 39 after removing a float from another angle.

FIG. 42 is an enlarged view of a structure of the circled part in FIG. 41.

DETAILED DESCRIPTION

The following describes the implementation of the disclosure through specific embodiments, and those skilled in the art can easily understand other advantages and effects of the disclosure from the content disclosed in this specification. The disclosure may also be implemented or applied through other different specific embodiments. Various details in this specification may also be modified or changed based on different viewpoints and applications without departing from the disclosure. It should be noted that, the following embodiments and the features in the embodiments can be combined with each other without conflict. It should further be understood that the terms used in the examples of the disclosure are used to describe specific embodiments, instead of limiting the protection scope of the disclosure. The test methods that do not indicate specific conditions in the following examples are usually in accordance with conventional conditions, or conditions recommended by each manufacturer.

It should be noted that terms “upper”, “lower”, “left”, “right”, “middle” and “one” quoted in this specification are only for a convenience of description, and are not used to limit a scope of the disclosure. Changes or adjustments in their relative relationships shall also be regarded to be within the scope of the disclosure when there is no substantial change in the technical content.

Please refer to FIG. 1 through FIG. 11. The disclosure provides a floor cleaning device to improve a problem that the floor cleaning device needs to be charged during a cleaning process due to limited power of a battery pack.

Please refer to FIG. 1 through FIG. 3. The floor cleaning device includes a frame 100, a battery assembly 200, a clean tank 300, a suction assembly 400, a dirty tank 500, a brush assembly 600 and a control system (not marked in the figure). Wherein, the brush assembly 600 is arranged at a bottom of the frame 100. The clean tank 300 is arranged on the frame 100 and is in fluid communication with the brush assembly 600 to provide clean water for the brush assembly 600. The dirty tank 500 is arranged on the frame 100 and is in the fluid communication with the brush assembly 600. The suction assembly 400 is arranged on the frame 100 and is connected with the dirty tank 500. The suction assembly 400 may form a negative pressure in the dirty tank 500 to recover sewage of the brush assembly 600 after cleaning to the dirty tank 500. The battery assembly 200 is arranged on the frame 100. The battery assembly 200 at least includes a first battery pack 201 and a second battery pack 202, which means that at least one extended battery is added to the battery assembly of the floor cleaning device to extend a battery life of the floor cleaning device. The control system controls the clean tank 300 to supply water to the brush assembly 600 and controls the suction assembly 400 to recycle the sewage cleaned by the brush assembly 600 to the dirty tank 500.

Please refer to FIG. 1 and FIG. 2. At least one of the first battery pack 201 and the second battery pack 202 may be charged independently of the floor cleaning device. In an embodiment, the first battery pack 201 may be charged independently of the floor cleaning device, which means that a universal adapter is used for charging the first battery pack 201, and the second battery pack is charged through the adapter of the floor cleaning device. In some embodiments, the first battery pack 201 may be charged using either the universal adapter or the adapter of the floor cleaning device. When the floor cleaning device works, the first battery pack 201 may be controlled to discharge first through the control system, after the discharging is completed, it may be taken off from the floor cleaning device for charging, and the control system switches to the second battery pack 202 to continue to provide power for the floor cleaning device simultaneously. An arrangement of the first battery pack 201 may increase power of the battery assembly 200, prolong a working time of the floor cleaning device, a use of the floor cleaning device will not be affected in its charging process, and the work efficiency of the floor cleaning device is improved. In some embodiments, the first battery pack 201 is provided with a USB port and/or a TYPE-C port, through which the first battery pack 201 may be charged or discharge to other devices after the charging is completed, such as being mounted on a vacuum cleaner and supplying power to the vacuum cleaner, or served as a power source to charge a mobile phone. In other embodiments, the floor cleaning device may also be provided with multiple battery packs that may be charged and discharged independently. Please refer to FIG. 1 and FIG. 4 through FIG. 7. The frame 100 includes a main supporting area that supports at least the battery assembly 200, the clean tank 300, and the dirty tank 500, and may further support additional components of a main body. In an embodiment, the frame 100 is provided with a first battery accommodating cavity 101 for mounting the first battery pack 201 and a second battery accommodating cavity 102 for mounting the second battery pack 202. A first connecting terminal 1011 matched with the first battery pack 201 is arranged in the first battery accommodating cavity 101, and a second connecting terminal 1021 matched with the second battery pack is arranged in the second battery accommodating cavity 102. The first battery pack 201 is assembled and disassembled along a direction of a longitudinal axis of the floor cleaning device, and the second battery pack 202 is assembled and disassembled along a direction transverse to the longitudinal axis of the floor cleaning device. The first connecting terminal 1011 and the second connecting terminal 1021 are electrically connected with the control system respectively, and the battery assembly 200 supplies power to the floor cleaning device through the control system.

Please refer to FIG. 1, FIG. 5 and FIG. 6. The first battery accommodating cavity 101 includes two side walls and a bottom wall integrally formed with the frame 100. The two side walls extend in an arc shape to a middle to form a cavity space that matches a shape of the first battery pack 201. The first connecting terminal 1011 is arranged on the bottom wall, the first battery pack 201 is mounted in the first battery accommodating cavity 101, and is electrically connected with the control system through the first connecting terminal 1011. In some embodiments, the first battery pack 201 is detachably mounted in the first battery accommodating cavity 101. For example, a pin 1012 and a latch 1013 are arranged on the bottom wall of the first battery accommodating cavity 101, and a limiting plate (not shown in the figure) matched with the pin 1012 is arranged at a bottom of the first battery pack 201. A mounting and positioning of the first battery pack 201 are realized through a matching of the pin 1012 and the limiting plate. The latch 1013 may lock the first battery pack 201 in the first battery accommodating cavity 101, and when disassembling, the latch 1013 is pressed down again to pop up the first battery pack 201, and then the first battery pack 201 may be taken out from the first battery accommodating cavity 101. This mode of assembly and disassembly is more convenient, and time may be saved.

Please refer to FIG. 1, FIG. 4, FIG. 5, FIG. 7 and FIG. 8. The second battery accommodating cavity 102 and the first battery accommodating cavity 101 are arranged on a same side of the first battery accommodating cavity 101, and the second battery accommodating cavity 102 is arranged directly below the first battery accommodating cavity 101. The second connecting terminal 1021 is arranged at a bottom of the second battery accommodating cavity 102, and the second battery pack 202 is mounted in the second battery accommodating cavity 102 and is electrically connected with the control system through the second connecting terminal 1021. In some embodiments, an outside of the second battery pack 202 is provided with a battery pack inner bracket 2021 matching a shape of the second battery pack 202. A bottom wall of the battery pack inner bracket 2021 is provided with a through hole for the second connecting terminal 1021 to pass through. An outside of the battery pack inner bracket 2021 is covered with a battery pack outer bracket 2022, a top end of the battery pack outer bracket 2022 is provided with a pressing device 2023, and the pressing device 2023 includes a button and a spring arranged under the button. When mounting, the second battery pack 202 is sleeved in the battery pack inner bracket 2021, and the battery pack outer bracket 2022 covers the outside of the battery pack inner bracket 2021. The button is pressed downward, the spring is compressed, and then the second battery pack 202 is placed in the second battery accommodating cavity 102. The button is released, under an clastic action of the spring, the button rebounds and abuts against a top of the accommodating cavity, and then the second battery pack 202 is locked. When it needs to be disassembled, the button is pressed, and it may be taken out from the second battery accommodating cavity 102, which is convenient and fast. Of course, in other embodiments, it may also be mounted through other mounting structures.

Please refer to FIG. 1 and FIG. 3. In an embodiment, the clean tank 300, the suction assembly 400 and the dirty tank 500 are arranged on one side of the frame 100 away from the battery assembly 200, and the three are arranged on a same axis from top to bottom, so that a center of gravity of the floor cleaning device is reasonable, and comfort of an operation is increased.

Please refer to FIG. 2, FIG. 4 and FIG. 9. The clean tank 300 may be mounted on the frame 100 in any structure. In this embodiment, the clean tank 300 may be detachably mounted above the frame 100. For example, a supporting base 103 for mounting the clean tank 300 is arranged on the frame 100, and the supporting base 103 may be integrated with the frame 100 and may also be a structure independently connected to the frame 100. The clean tank 300 includes a first housing 301, a second housing 302 and a third housing 303. Wherein, the first housing 301 includes an outer housing 3011 and an inner housing 3012. A top of the outer housing 3011 is scaled and connected with a top of the inner housing 3012, a bottom of the outer housing 3011 is an open structure. The third housing 303 is mounted on the supporting base 103, and a through connecting tube 3031 is arranged inside the third housing 303. A through hole 3021 matched with the connecting tube 3031 is arranged in the second housing 302. The second housing 302 is sleeved on the connecting tube 3031 and a lower end of the second housing 302 is connected with the third housing 303. The first housing 301 is arranged and covers above the second housing 302, and the outer housing 3011 is connected with an upper end of the second housing 302. The inner housing 3012 is connected with the connecting tube 3031, thereby forming a closed annular box structure. A space between the inner housing 3012 and the outer housing 3011 is used for storing cleaning water, and the cleaning water includes but is not limited to water, detergent, combinations thereof, and the like. In some embodiments, connections of the first housing 301, the second housing 302 and the third housing 303 are all connected by a stop structure, which may increase a scaling property of the box. One side of the third housing 303 is provided with a water outlet 3032, a water outlet assembly 3033 is mounted on the water outlet 3032, and the water outlet assembly 3033 may include a water outlet valve. A clear water tube (not shown in the figure) is connected to the water outlet valve, the other end of the clean water tube extends to the brush assembly 600, and the clean water in the clean tank may be controlled to enter the brush assembly 600 through the water outlet valve. In some embodiments, a water pump 3034 is arranged on a water supply path of the clean tank 300. The water pump 3034 may be a centrifugal pump or an electromagnetic pump with a single speed, double speed or variable speed, etc., and a flow rate of the cleaning water may be controlled through the water pump 3034.

Please refer to FIG. 9. In an embodiment, an electrolyzer 304 is further arranged in the clean tank 300. The electrolyzer 304 is sleeved on the connecting tube 3031 and is fixed on the third housing 303. The electrolyzer 304 may electrolyze water under an effect of electric current and generate electrolyzed water, and the electrolyzed water has better decontamination, antibacterial ability than ordinary water, thereby can better remove oil stain on the ground. For example, the electrolyzer 304 includes a frame body, a negative electrode, a positive electrode and an isolation plate. The frame body is used for mounting and fixing the electrodes, and the positive electrode and the negative electrode are mounted in the frame body and separated by the isolation plate.

Please refer to FIG. 1, FIG. 5 and FIG. 9. The floor cleaning device further includes a user interface 105. The user interface 105 is coupled with the control system of the floor cleaning device, a user may operate and control the floor cleaning device through the user interface 105, and may also provide feedback information from the floor cleaning device to the user, so that the user may understand a state of the floor cleaning device. In an embodiment, the user interface 105 is arranged at an upper end of the floor cleaning device through a supporting column 104 so that the user may operate and observe. For example, a center of the first housing 301 of the clean tank 300 is provided with a supporting column matching hole 3013, and the supporting column 104 is fixed on the supporting base 103 successively passing through the supporting column matching hole 3013 and the connecting tube 3031. In some embodiments, the clean tank 500 is made of transparent material, and a side wall of the supporting column 104 is coated with a reflective layer. Bubbles produced by the electrolyzed water may be observed through the clean tank, and a certain visual effect is formed.

Please refer to FIG. 2, FIG. 4 and FIG. 10. The dirty tank 500 may be mounted on the frame 100 in any structure. In this embodiment, the dirty tank 500 is detachably mounted at the bottom of the frame 100. The bottom of the frame 100 is provided with a tray 106, and the tray 106 is provided with a through hole communicated with the brush assembly 600. The dirty tank 500 is mounted on the tray 106, and is communicated with the brush assembly 600 through the through hole on the tray 106. In this embodiment, the dirty tank 500 includes a box 501 and a cover body 502 that covers at a top of the box 501. A sewage port is arranged at a bottom of the box 501, and the sewage outlet is arranged corresponding to the through hole on the tray 106. An air passage 5011 extending to an inside of the box 501 is arranged on the sewage outlet, and an air outlet of the air passage 5011 is higher than the sewage outlet. An air suction port 5021 is arranged on the cover body 502, the air suction port 5021 is connected with the suction assembly 400. In some embodiments, a gas filter 505 is arranged in the air suction port 5021, and gas in the dirty tank 500 enters the suction assembly 400 after being filtered by the gas filter 505.

Please refer to FIG. 2 through FIG. 4. In an embodiment, the suction assembly 400 is arranged directly above the dirty tank 500 and directly below of the clean tank 300. An accommodating cavity for mounting the suction assembly 400 is arranged on the frame 100. The accommodating cavity includes the frame 100 and a casing 108 surrounding the frame 100, an upper end of the casing 108 is connected with the supporting base 103, and a lower end of the casing 108 is connected with the dirty tank 500. For example, the suction assembly 400 may include a motor 401 and a fan blade 402 mounted on a motor rotating shaft. The motor 401 is started, the fan blade 402 rotates synchronously with the motor rotating shaft. With a rotation of the fan blade 402, a center of the fan blade forms a negative pressure. Air in the dirty tank 500 is sucked out to form a negative pressure inside, and under an effect of negative pressure, the sewage in the brush assembly 600 after cleaning enters the box 501 along the air passage 5011. In some embodiments, a first side of the tray 106 is used for mounting the dirty tank 500, and a second side of the tray 106 is used as a bottom wall of the second battery accommodating cavity 102 for mounting the second battery pack 202.

Please refer to FIG. 10. In some embodiments, the dirty tank 500 is provided with a filter frame 503. The filter frame 503 includes a filter plate 5031, a blocking plate 5032 and a connecting frame 5033. The filter plate 5031 is sleeved on the air passage 5011, and a plurality of filter holes is arranged on it. The blocking plate 5032 is arranged at an upper end of the box 501, and below the air suction port 5021. The blocking plate 5032 is provided with a penetrating air outlet port. A first end of the connecting frame 5033 is connected with the blocking plate 5032, and a second end of the connecting frame 5033 is connected with the filter plate 5031. The connecting frame 5033 is provided with a float 504 that is slidably connected, and a size of the float 504 corresponds to a size of the air outlet port on the blocking plate 5032. The sewage entering by the air passage 5011 enters the box 501 after being filtered by the filter plate 5031, and large particle garbage filtered by the filter plate 5031 stays on the filter plate 5031. With a liquid level in the box 501 rising, the float 504 will float upwards along the connecting frame 5033 until the float 504 completely blocks the air outlet port. On one hand, an arrangement of the filter frame 503 is to filter the large particle garbage in the sewage, and on the other hand, the float is used to block the air outlet port, and prevent the sewage from entering the motor 401 and causing damage to it.

Please refer to FIG. 1 and FIG. 11. The brush assembly 600 includes a housing 601, a rolling brush assembly 602, a driving device and a roller 605. The rolling brush assembly 602 and the driving device are arranged inside the housing 601, and the rollers 605 are arranged on two sides of the housing 601 for moving. The rolling brush assembly 602 includes at least one brush roller, and two ends of the brush roller are rotatably arranged on the housing 601. The driving device includes a driving motor 603 and a transmission device 604, and the driving motor 603 drives the brush roller to rotate through the transmission device 604. In an embodiment, the housing 601 includes a rear housing 6011, an end cover 6012, an upper cover 6013 and a front cover 6014. The rear housing 6011 includes an extending part 60111 communicated with the through hole of the tray 106. Two sides of a front end of the extending part 60111 are respectively provided with a water pump accommodating cavity and a motor accommodating cavity. The water pump 3034 is arranged in the water pump accommodating cavity and is connected with a clean liquid tube. The cleaning water in a cleaning liquid tank enters the water pump 3034 through the clean liquid tube, and is pumped into the housing through the water pump 3034 to infiltrate the ground or a roller brush. Left and right sides of the rear housing 6011 are provided with end covers 6012 that exceed the rear housing 6011. The upper cover 6013 covers on the rear housing 6011, the front cover 6014 is mounted on the end cover 6012, and the front cover 6014 is provided with a visual window so as to observe an operation of the rolling brush assembly. Two ends of the roller brush may be rotatably mounted on a front side of the end cover 6012 respectively. The driving motor 603 is mounted in the motor accommodating cavity. The transmission device 604 may be a transmission belt or a meshing gear set, etc. The driving motor 603 drives the roller brush 602 to rotate through the transmission device 604 to complete a cleaning work.

Please refer to FIG. 1. A handle assembly 700 is further arranged above the frame 100. The handle assembly 700 may drive the floor cleaning device to walk, which enables it to be more convenient and comfortable. In addition, it should be noted that, other structures of the floor cleaning device of the disclosure that are not described in detail may be realized by the prior art and are not described in detail here.

The floor cleaning device of the disclosure uses an extended battery in the battery assembly to improve a battery life and reduce a number of charging times of the floor cleaning device during a cleaning process. And the extended battery may be charged and discharged independently outside the floor cleaning device. When the floor cleaning device works, the battery pack may be controlled by the control system to supply power first, and then another battery pack is switched to continue to discharge when a power release of the first battery pack is completed. The first battery pack may be disassembled from the floor cleaning device and is charged by the universal adapter. The cleaning work of the floor cleaning device is not affected during its charging process, and the cleaning efficiency of the floor cleaning device is improved. And the center of gravity of the floor cleaning device of the disclosure is reasonable, and a comfort of operation is also increased.

In addition, considering that the floor cleaning device needs to use cleaning liquid, when the cleaning liquid in the cleaning liquid tank is used up, the box needs to be pulled out of the machine body to add the cleaning liquid, and at the moment when the box is pulled out, since the valve cannot be closed in time, residual liquid in the box will leak out and fall on the ground or the human body, which brings secondary troubles and seriously affecting user experience. Therefore, please refer to FIG. 12 to FIG. 23. The disclosure provides the clean tank and the floor cleaning device to improve a problem of liquid dripping of the floor cleaning device caused by an untimely closure of the valve at the moment when a fluid tank is pulled out.

Please refer to FIG. 12 through FIG. 15. The clean tank of the disclosure includes the fluid tank 3110 and a valve assembly 3120. An outlet 3111 is arranged on the fluid tank 3110. The valve assembly 3120 is mounted on the outlet 3111. The valve assembly 3120 includes a control structure 3121 and a leak-proof structure 3122. The control structure 3121 is mounted in the outlet 3111, and the leak-proof structure 3122 is connected with the control structure 3121. A cavity space communicated with the outlet 3111 is arranged inside the leak-proof structure 3122, and an end of the cavity space away from the control structure is provided with an opening-closing unit 312221. The clean tank may be switched between a first state and a second state. When it is in the first state, the clean tank is mounted on a flow taking device (such as on the floor cleaning device). The opening-closing unit 312221 and the control structure are opened by the flow taking device (floor cleaning device), and the fluid tank 3110 supplies fluid to the flow taking device (the brush assembly 600 of the floor cleaning device). When it is in the second state, the clean tank 300 is separated from the flow taking device, the control structure 3121 is reset, the opening-closing unit is automatically closed, and the fluid tank 3110 stops supplying fluid to the flow taking device.

Please refer to FIG. 14, FIG. 16 and FIG. 19. The control structure 3121 at least includes a valve pushing rod 31211, a spring 31212 and a sealing sleeve 31213. The valve pushing rod 31211 may slide up and down between the outlet 3111 and the cavity space of the leak-proof structure 3122. The valve pushing rod 31211 is provided with a protruding flange 312111 extending outward along the radial direction. An outer diameter of the protruding flange 312111 is greater than an inner diameter of the outlet 3111. The spring 31212 is sleeved at one end of the valve pushing rod 31211 towards the outlet 3111, and the scaling sleeve 31213 is sleeved at one end of the valve pushing rod 31211 towards the leak-proof structure 3122. In some embodiments, one end of the valve pushing rod 31211 mounting the sealing sleeve 31213 is provided with a blocking structure 312112 to prevent the sealing sleeve 31213 from falling off from the valve pushing rod 31211.

Please refer to FIG. 14 through FIG. 16 and FIG. 19. In an embodiment, the control structure 3121 further includes a pushing rod cap 31214. The pushing rod cap 31214 is inserted in the outlet 3111 of the fluid tank, and a plurality of through holes 312141 communicating the fluid tank 3110 with the cavity space of the leak-proof structure 3122 is arranged on the pushing rod cap 31214. The valve pushing rod 31211 is arranged between the pushing rod cap 31214 and the cavity space of the leak-proof structure 3122, and may be moved up and down there. Under an effect of external force, for example, a push rod is arranged on the flow taking device, this push rod holds the opening-closing unit 312221 to be opened, and enters the cavity space of the leak-proof structure 3122. The valve pushing rod 31211 is pushed into the pushing rod cap 31214, the fluid flows out from the fluid tank 3110, enters the cavity space of the leak-proof structure 3122, flows out from the opening-closing unit 312221 and enters the flow taking device. After the push rod is withdrawn, the opening-closing unit at a bottom of the cavity space is closed. In some embodiments, a central axis of the valve pushing rod 31211 is in a same straight line as a center line of the cavity space of the leak-proof structure 3122, so as to ensure that the push rod pushes the valve pushing rod 31211 to move upward after the valve pushing rod 31211 enters the cavity space from the opening-closing unit 312221.

Please refer to FIG. 14, FIG. 17 through FIG. 20. In an embodiment, the cavity space of the leak-proof structure 3122 includes a first cavity space 31223 and a second cavity space 31224 communicated with each other. The first cavity space 31223 is used for accommodating the valve pushing rod 31211, and the second cavity space 31224 is used for housing the leakage liquid. A supporting structure 31225 of the valve pushing rod 31211 is arranged between the first cavity space 31223 and the second cavity space 31224. A through hole communicating the first cavity space 31223 and the second cavity space 31224 is arranged inside the supporting structure 31225, and an inner diameter of the through hole is smaller than an outer diameter of the sealing sleeve 31213. When no external force acts on the valve pushing rod 31211, the valve pushing rod 31211 enters the first cavity space 31223 under an action of the spring, and the sealing sleeve 31213 abuts against the supporting structure 31225. In some embodiments, a supporting inclined plane 312251 is arranged at a position where the supporting structure 31225 is in contact with the sealing sleeve 31213. Under an clastic action of the spring 31212, the sealing sleeve 31213 is in an interference fit with the supporting inclined plane 312251 to form a sealing structure. When the external force pushes up the valve pushing rod 31211, the valve pushing rod 31211 drives the sealing sleeve 31213 to move upward, the sealing sleeve 31213 is separated from the supporting structure 31225, and a passage is formed here. The liquid in the fluid tank 3110 flows out from the outlet 3111 and flows downward along the passage (please refer to FIG. 20). When the external force is removed, under the clastic action of the spring 31212, the valve pushing rod 31211 quickly returns until the scaling sleeve 31214 abuts against the supporting structure 31225, and at this moment, the valve is in a closed state (please refer to FIG. 19). In some embodiments, a returning distance LI of the valve pushing rod 31211 is less than a distance L2 from the supporting structure 1225 to a bottom of the second cavity space (please refer to FIG. 20), so that the valve pushing rod 31211 has returned and the scaling sleeve 31213 forms the sealing structure with the supporting structure 31225 the before push rod of the flow taking device completely separated from the second cavity space 31224 when pulling out the fluid tank 3110. The residual liquid in the fluid tank 3110 cannot be leaked, and even if a small amount of liquid is leaked, it may be housed in the second cavity space 31224.

Please refer to FIG. 13, FIG. 17 and FIG. 18. In an embodiment, the leak-proof structure 3122 includes a bracket 31221 and an clastic protective cover 31222. A first end of the bracket 31221 is connected with the pushing rod cap 31214 and a second end of the bracket 31221 is connected with the clastic protective cover 31222. For example, the bracket 31221 is connected with the pushing rod cap 31214 by means of a stop. The elastic protective cover 31222 is fixed on the bracket 31221 by molding, and the elastic protective cover 31222 is at least partially located below the bracket 31221. A connection between the bracket 31221 and the elastic protective cover 31222 is provided with a connecting flange 312211, and the leak-proof structure 3122 is inserted in the outlet 3111 and is fixed on the outlet 3111 through a valve cover 3123. Specifically, the valve cover 3123 is provided with a step hole, a diameter of the step hole is large at a top and small at a bottom, and a diameter of an upper end is matched with an outer diameter of the outlet 3111, and a diameter of a lower end is smaller than a diameter of the connecting flange 312211. The leak-proof structure 3122 and the control structure 3121 are fixed in the outlet 3111 through a threaded connection between the valve cover 3123 and the outlet 3111. In some embodiments, the outer diameter of the connecting flange 312211 is consistent with the inner diameter of the large end of the step hole, and an outer diameter of the clastic protective cover 31222 is consistent with the inner diameter of the small end of the step hole, which may further improve a scaling performance of the leak-proof structure.

Please refer to FIG. 15 and FIG. 18. The first cavity space 31223 is arranged in the bracket 31221. The second cavity space 31224 communicated with the first cavity space 31223 is arranged inside a part of the clastic protective cover 31222 located below the bracket 31221, and the clastic protective cover 31222 is sleeved on the bracket 31221. For example, one end of the clastic protective cover 31222 connected with the bracket 31221 is provided with a step-shaped groove, and the bracket 31221 is provided with a protrusion matched with the step-shaped groove. A stop connection is realized through a matching of the groove and the protrusion. One end of the bracket 31221 connected with the elastic protective cover 31222 extends radially to an inner side of the cavity space to form the supporting structure 31225 of the valve pushing rod 31211. The opening-closing unit 312221 of the leak-proof structure is arranged at one end of the elastic protective cover 31222 away from the bracket 31221. The opening-closing unit 312221 includes a cutting slit or multiple cross cutting slits arranged on the elastic protective cover 31222, and the smaller a gap of the cutting slit, the better. For example, the clastic protective cover 31222 may be cut with a thin blade or a special cutting tool to form the cutting slit. The cutting slit may be arranged in a criss-cross structure or in other structures, and there is no restriction on a specific structure of the cutting slit. Due to clastic properties of the elastic protective cover 31222, the cutting slit may be stretched open under the action of external force and may close itself after removing the external force. A spacing is arranged between an end part of the cutting slit and an edge of the elastic protective cover, a size of the cutting slit corresponds to a size of the push rod of the flow taking device. In some embodiments, a center of one end of the elastic protective cover 31222 away from the bracket 31221 is concave to an inner side of the cavity space so that a center of the second cavity space 31224 protrudes and is spherical. The cutting slit is arranged on a spherical protrusion of the elastic protective cover 31222, and since a bottom center of the second cavity space 31224 protrudes upward, the liquid left in the second cavity space 31224 may slide down along the spherical protrusion to both sides to prevent the liquid from slipping from the cutting slit. In some embodiments, the valve pushing rod 31211, the bracket 31221 and the clastic protective cover 31222 are coaxially arranged, and the cutting slit is arranged at a center of a bottom of the clastic protective cover 31222.

In other embodiments, the opening-closing unit of the leak-proof structure may also adopt other structures, and all the structures that can be opened under the external force and can recover by themselves after the external force of the area is withdrawn can be used.

Please refer to FIG. 1. The disclosure provides the floor cleaning device. The floor cleaning device includes the clean tank 300 and the flow taking device. Wherein, the flow taking device includes the frame 100 and the brush assembly 600 mounted on the frame 100. The brush assembly 600 is used to clean the ground. The clean tank 300 is mounted on the frame 100, and contains the cleaning fluid inside for providing the cleaning fluid to the brush assembly 600. For a structure of the clean tank 300, please refer to the detailed description above.

Please refer to FIG. 15, FIG. 1, FIG. 18, FIG. 21 through FIG. 23. In an embodiment, one side of the frame 100 is provided with an accommodating cavity 1210 of the clean tank 300, a push rod 1211 is arranged in the accommodating cavity 1210, a radial size of the push rod 1211 is matched with a size of the opening-closing unit, and the push rod 1211 may be fixedly arranged at a central position of accommodating the cavity 1210. When the assembled clean tank 300 is mounted to the accommodating cavity 1210, the push rod 1211 first passes through the opening-closing unit 312221 at a bottom of the clean tank, enters the second cavity space 31224, and then enters the first cavity space 31223 to push the valve pushing rod 31211 to move upward. At this moment, the sealing sleeve 31213 and the supporting structure 31225 are in a separating state, and the valve is opened. A gap is formed inside the valve assembly 3120, and the liquid in the fluid tank 3110 enters the accommodating cavity 1210 of the frame along an arrow direction in FIG. 23, and then enters the brush assembly 600 from the accommodating cavity 1210 according to a planned waterway. When the cleaning liquid in the fluid tank 3110 is used up, the clean tank 300 needs to be pulled out from the accommodating cavity 1210 to add the cleaning liquid to the fluid tank 3110. When pulling out the clean tank 300, the push rod 1211 first comes out from the first cavity space 31223, is separated from the valve pushing rod 31211, and then comes out from the second cavity space 31224, and the opening-closing unit 312221 automatically closes. When the push rod 1211 is separated from the valve pushing rod 31211, under the elastic action of the spring 31212, the valve pushing rod 31211 will move down rapidly until the sealing sleeve 31213 is are in an interference contact with the supporting structure 31225 to form the sealing structure. The liquid in the fluid tank 3110 will not flow down under a control of the sealing structure at this moment. Even if there is a small amount of liquid flowing out, it will be stored in the second cavity space 31224, and the liquid is prevented from falling to the ground when the clean tank 300 is pulled out, which improves the user experience.

Please refer to FIG. 1. In an embodiment, the floor cleaning device further includes the dirty tank 500 and the battery assembly 200. The dirty tank 500 is mounted on the frame 100 and is communicated with the brush assembly 600 to recover the sewage of the brush assembly 600 after cleaning. The battery assembly 200 is mounted on the frame 100 to provide electrical energy for the floor cleaning device. The dirty tank 500 includes the suction assembly (not shown in the figure) communicated with the box 501, and the suction assembly includes, for example, the motor and the fan blade mounted on a motor shaft. A bottom of the box 500 is provided with a sewage outlet that is communicated with the brush assembly 600, and a top of the box 500 is provided with the air suction port that is communicated with the suction assembly. The sewage outlet is provided with a sewage tube that extends to an inside of the box, and an upper end of the sewage tube is provided with the air outlet. After the motor is started, the fan blade rotates synchronously with the motor rotating shaft. With the rotation of the fan blade, the center of the fan blade forms the negative pressure. Air in the box 500 is sucked out to form the negative pressure inside, and under the effect of negative pressure, the sewage in the brush assembly 600 after cleaning enters the box 501 along the sewage tube.

In addition, it should be noted that, other structures of the floor cleaning device of the disclosure that are not described in detail may be realized by the prior art and are not described in detail here.

The clean tank of the disclosure may also be applied to other types of floor cleaning devices.

The clean tank of the disclosure is provided with the leak-proof structure in the valve assembly, and residual liquid in the fluid tank is stored in the cavity space of the leak-proof structure by using the opening-closing unit that can be automatically closed on the leak-proof structure, so as to prevent residual liquid from falling to the ground or human body due to a failure to close the valve in time when the fluid tank is pulled out, which improves the user experience.

Considering that the floor cleaning devices on the market mainly include semi-automatic floor cleaning devices, fully automatic floor cleaning devices and ride-on floor cleaning devices, a working principle of each is basically the same. They spray water and detergent on the ground to clean it. At the same time, a main motor can also suck garbage and sewage dragged by the roller brush into the dirty tank in the floor cleaning device again, thereby achieving an effect of cleaning the floor. However, when the main motor is exhausting, the gas with carbon powder generated by a friction of a carbon brush will be blown out of a brush, which causes the secondary pollution.

Therefore, the disclosure further provides the floor cleaning device to improve a problem that a float connecting frame and a dry-wet separation filter in the dirty tank cannot be thoroughly cleaned due to the secondary pollution caused by the gas blowing out of the roller brush with the carbon powder, and the float is easy to cause a stuck phenomenon due to a secondary accumulation of dirt.

Please refer to FIG. 24 through FIG. 26. The floor cleaning device includes a main body assembly, the handle assembly 700 and the brush assembly 600. Wherein, the brush assembly 600 is arranged at a bottom of the main body assembly to clean the ground. The handle assembly 700 is arranged on a top of the main body assembly for the user to operate.

The main body assembly includes the frame 100, the battery assembly 200, the clean tank 300, the suction assembly 400, the dirty tank 500 and the control system (not marked in the figure). Wherein, a first end of the frame 100 is connected with the brush assembly 600, and a second end of the frame 100 is connected with the handle assembly 700. The clean tank 300, the dirty tank 500 and the suction assembly 400 are coaxially arranged on a first side of the frame 100, and the clean tank 300 and the dirty tank 500 are respectively in the fluid communication with the brush assembly 600. The battery assembly 200 is arranged on a second side of the frame 100 to supply power to the floor cleaning device. The control system is used for controlling the clean tank 300 to provide the cleaning liquid to the brush assembly 600 and controlling the suction assembly 400 to recycle the sewage of the brush assembly 600 to the dirty tank 500 after cleaning.

Specifically, the clean tank 300, the suction assembly 400 and the dirty tank 500 are arranged on a first side of the frame 100 sequentially from top to bottom, and the battery assembly 200 is arranged on a second side of the frame 100. The frame 100 is provided with a battery accommodating cavity (not shown) for mounting the battery assembly 200. A connecting terminal matched with the battery assembly 200 is arranged in the battery accommodating cavity, the connecting terminal is electrically connected with the control system, and the battery assembly 200 supplies power to the floor cleaning device through the control system. There is no restriction on a number and voltage of battery packs in the battery assembly 200, and an appropriate battery pack combination may be selected according to a power of the floor cleaning device.

The clean tank 300 may be mounted on the frame 100 in any structure. In an embodiment, the clean tank 300 is detachably mounted above the frame 100. A bottom of the clean tank 300 is connected with the clean liquid tube (not shown), and the other end of the clean liquid tube extends to the brush assembly 600, so that the cleaning liquid in the clean tank 300 can be introduced into the brush assembly 600 through the clean liquid tube. In some embodiments, the pump 3034 is arranged on a water supply path of the clean tank 300 (please refer to FIG. 35). The pump 3034 may be the centrifugal pump or the electromagnetic pump with the single speed, double speed or variable speed, etc., and the flow rate of the cleaning liquid may be controlled through the pump 3034. A specific structure of the clean tank 300 and a connection relationship between the clean tank 300 and the brush assembly 600 may be realized by the prior art in the art, and will not be described in detail here.

Please refer to FIG. 27 through FIG. 33 combined with FIG. 25 and FIG. 26. The dirty tank 500 may be mounted on the frame 100 in any structure. In an embodiment, the dirty tank 500 is detachably mounted at the bottom of the frame 100. The bottom of the frame 100 is provided with the tray 106, and the tray 106 is provided with the through hole 1061 communicated with the brush assembly 600. The dirty tank 500 is mounted on the tray 106, and is communicated with the brush assembly 600 through the through hole 1061 on the tray 106. In this embodiment, the dirty tank 500 includes the box 501 and the cover body 502 covering on the top of the box 501. The sewage port 5010 is arranged at the bottom of the box 501, and the sewage inlet 5010 is arranged corresponding to the through hole on the tray 106. A sewage recovery tube 5011 extending to the inside of the box 501 is arranged on the sewage inlet 5010. An upper end of the sewage recovery tube 5011 is provided with the air outlet 5013, and the air outlet 5013 is higher than the sewage inlet 5010. The cover body 502 is provided with the air suction port (not marked), the air suction port is connected with the suction assembly 400. In some embodiments, the gas filter 505 is arranged in the air suction port, and the gas in the dirty tank 500 enters the suction assembly 400 after being filtered by the gas filter 505. In some embodiments, the gas filter is a HEPA filter.

The bottom of the frame 100 is further provided with a connecting disc 107 that connects the tray 106 with the brush assembly 600. A first end of the connecting disc 107 is fitfully assembled with the tray 106 and a second end of the connecting disc 107 is fitted with the brush assembly 600, so as to realize a turning flexible connection between the frame 100 and the brush assembly 600. The brush assembly 600 is provided with an extending part 60111, and the extending part 60111 is arranged in a cylindrical shape, which can realize a rotatable connection between the frame 100 and the brush assembly 600. A first connecting passage 1071 is formed in the connecting disc 107, and a second connecting passage 601111 is formed in the extending part 60111. The first connecting passage 1071 is communicated with the sewage recovery tube 5011 through the through hole 1061, a first end of the second connecting passage 601111 is communicated with the first connecting passage 1071, and a second end of the second connecting passage 601111 is communicated with an inner cavity of the brush assembly 600, so that a sewage recovery passage may be formed between the brush assembly 600 and the dirty tank 500, and the sewage liquid and sewage gas that the brush assembly 600 cleans and collects are recovered into the dirty tank 500 through the sewage recovery passage.

The suction assembly 400 is connected with the air suction port 5021 of the dirty tank 500, and is used for sucking out the air in the dirty tank 500 to form the negative pressure, so that under the effect of negative pressure, the sewage in the brush assembly 600 can enter the box 501 along the sewage recovery tube 5011 after cleaning.

Please refer to FIG. 34 and FIG. 35. The brush assembly 600 includes the housing 601, the rolling brush assembly 602, the driving device and the roller 605. The rolling brush assembly 602 and the driving device are arranged inside the housing 601, and the rollers 605 are arranged on two sides of the housing 601 for moving. The rolling brush assembly 602 includes at least one roller brush, and two ends of the rolling brush assembly are rotatably arranged on the housing 601. The driving device includes a driving motor 603 and a transmission device 604, and the driving motor 603 drives the roller brush to rotate through the transmission device 604.

In an embodiment, the housing 601 includes the rear housing 6011, the end cover 6012, the upper cover 6013 and the front cover 6014. The rear housing 6011 includes the extending part 60111 communicated with the through hole 1061 of the tray 106. Two sides of the front end of the extending part 60111 are respectively provided with a pump accommodating cavity and the motor accommodating cavity. The pump 3034 is arranged in the pump accommodating cavity and is connected with the clean liquid tube, so that the cleaning liquid in the clean tank 300 enters the pump 3034 through the clean liquid tube, and is pumped into the housing 601 through the pump 3034 to infiltrate the ground or the roller brush. Left and right sides of the rear housing 6011 are provided with end covers 6012 that exceed the rear housing 6011. The upper cover 6013 covers on the rear housing 6011, the front cover 6014 is mounted on the end cover 6012, and the front cover 6014 is provided with the visual window so as to observe the operation of the rolling brush assembly. Two ends of the roller brush may be rotatably mounted on the front side of the end cover 6012 respectively. The driving motor 603 is mounted in the motor accommodating cavity. The transmission device 604 may be the transmission belt or the meshing gear set, etc. The driving motor 603 drives the roller brush 602 to rotate through the transmission device 604 to complete the cleaning work. An accommodating cavity 60113 is formed at a position of the rear housing 6011 corresponding to the front cover 6014, and the rolling brush assembly 602 is housed in the accommodating cavity 60113 and is covered by the front cover 6014. On one hand, it can play a role of protecting the rolling brush assembly 602, and on the other hand, it can also prevent the dirt from sputtering at will, and an aesthetics of the brush assembly 600 is also increased. The rear housing 6011 further includes a separating wall 6015 separating a first housing cavity 60112 from the accommodating cavity 60113. The separating wall 6015 is provided with a first through hole 60151 and a second through hole 60152, the first through hole 60151 is configured to communicate the first housing cavity 60112 with the accommodating cavity 60113, and the second through hole 60152 is configured to communicate the accommodating cavity 60113 with the sewage recovery passage.

Specifically, the first housing cavity 60112 is enclosed by four housing walls 6016 located in the rear housing 6011, and the housing wall adjacent to the separating wall 6015 is defined as a first housing wall 60161, an opening 60162 is formed in the first housing wall 60161, and the opening 60162 is communicated with the first through hole 60151. In this embodiment, the opening 60162 is formed by a top of the first housing wall 60161 being concave downward. Of course, in other embodiments, the opening 60162 may also be opened on the first housing wall 60161 in a form of a through hole as long as a communication between the first housing cavity 60112 and the first through hole 60151 can be realized, which is not limited here.

In an embodiment, the rear housing 6011 further includes a connecting wall 6017 connecting the separating wall 6015 with the first housing wall 60161. In some embodiments, there are two connecting walls 6017 and an airflow passage 6018 is formed between the opening 60162 and the first through hole 60151. The two connecting walls 6017 are respectively arranged on two sides of the first through hole 60151, in a vertical direction, the opening 60162 is located at a top of the airflow passage 6018, and the first through hole 60151 is located at a bottom of the airflow passage 6018. An arrangement of the connecting wall 6017 enables the gas with carbon powder to accumulate at the airflow passage 6018, which enhances an airflow between the first housing cavity 60112 and accommodating cavity 60113.

The second through hole 60152 is arranged in a middle position of the separating wall 6015, and the first through hole 60151 is located at a side of the second through hole 60152. The rear housing 6011 is further provided with a suction hood 6019. A first end of the suction hood 6019 is connected with the second through hole 60152, and a second end of the suction hood 6019 is connected with the sewage recovery passage. The second through hole 60152 is configured so that the sewage and sewage gas in the accommodating cavity 60113 enter the suction hood 6019 and enter the dirty tank 500 through the sewage recovery passage.

In some embodiments, the other end of the suction hood 6019 is connected with the extending part 60111 so that the suction hood 6019 may be communicated with the first connecting passage 1071 through the second connecting passage 601111 in the extending part 60111.

Combined with an arrow indication in FIG. 26 and FIG. 35, when using, the rolling brush assembly 602 carries out a normal cleaning work on the ground, and the sewage produced in a cleaning process can gather in the accommodating cavity 60113. Under an effect of the suction assembly 400, the dirty tank 500 forms the negative pressure inside, forces the sewage in the accommodating cavity 60113 to enter the suction hood 6019 through the second through hole 60152, enter the sewage recovery tube 5011 in the dirty tank 500 through the second connecting passage 601111 and the first connecting passage 1071, and be finally stored in the dirty tank 500. At the same time, when the driving motor 603 works in the first housing cavity 60112, it will generate gas with carbon powder. Under the effect of the suction assembly 400, these gases flows out of the first housing cavity 60112 from the opening 60162, flows into the first through hole 60151 through the airflow passage 6018, then flows into the accommodating cavity 60113 from the first through hole 60151, then follows the sewage in the accommodating cavity 60113 and enters the dirty tank 500 through the second through hole 60152, the suction hood 6019, the second connecting passage 601111, the first connecting passage 1071 and the sewage recovery tube 5011, then passes through the gas filter 505 at a top of the dirty tank 500 to filter out impurities in the sewage gas, and is discharged as clean air.

In a process of filtering and re-discharging dirty gas, the air blown out through the first through hole 60151 may increase a suction power of the suction assembly 400, so that the floor cleaning device may more effectively achieve an effect of cleaning the ground.

Other structures of the floor cleaning device of the disclosure that are not described in detail may be realized by the prior art and are not described in detail here.

The floor cleaning device of the disclosure is provided with the separating wall 6015 between the first housing cavity 60112 and the accommodating cavity 60113 of the rear housing 6011, and the first through hole 60151 and the second through hole 60152 are arranged on the separating wall 6015, so that the first through hole 60151 may be used to communicate the first housing cavity 60112 with the accommodating cavity 60113, and the second through 60152 hole may be used to communicate the accommodating cavity 60113 with the sewage recovery passage simultaneously, so that the exhaust gas discharged by the driving motor 603 can enter the accommodating cavity 60113 through the first through hole 60151, then enter the sewage recovery passage through the second through hole 60152 for filtration, and then be discharged, which not only solves a problem of air pollution, but also air blown out by the driving motor 603 may increase a suction power of the floor cleaning device, and achieves a better cleaning effect.

Considering that in the dirty tank of the floor cleaning device on the market at present, the dry-wet separation filter is fixed on the float connecting frame, when cleaning the dirty tank, the float connecting frame and the dry-wet separation filter cannot be thoroughly cleaned, and the float is easy to be stuck due to the secondary accumulation of dirt. Please refer to FIG. 36 through FIG. 42. The disclosure further provides the floor cleaning device. The floor cleaning device of the embodiment may improve the problem that the float connecting frame and the dry-wet separation filter in the dirty tank cannot be thoroughly cleaned, and the float is easy to cause the stuck phenomenon due to the secondary accumulation of dirt. In this embodiment, the dirty tank 500 includes the box 501, the cover body 502 covering on the top of the box 501 and the filter frame 503 housed in the box 501. The sewage port (not shown in the figure) is arranged at the bottom of the box 501, and the sewage inlet is arranged corresponding to the through hole 1061 on the tray 106. The sewage recovery tube 5011 extending to the inside of the box 501 is arranged at the sewage inlet. The upper end of the sewage recovery tube 5011 is provided with the air outlet 5013, and the air outlet 5013 is higher than the sewage inlet. The cover body 502 is provided with the air suction port 5021, the air suction port 5021 is connected with the suction assembly 400. In some embodiments, the gas filter 505 is arranged in the air suction port 5021, and the gas in the dirty tank 500 enters the suction assembly 400 after being filtered by the gas filter 505. In some embodiments, the gas filter is the HEPA filter.

Please refer to FIG. 36 through FIG. 39. The filter frame 503 includes the connecting frame 5033, the float 504 slidably connected with the connecting frame 5033 and the filter plate 5031 assembled and fixed on the connecting frame 5033. A first side of the connecting frame 5033 is provided with a protruding first mounting block 50331, and a second side of the connecting frame 5033 arranged relatively is provided with a protruding second mounting block 50332. The filter plate 5031 is correspondingly provided with a first matching block 50311 and a second matching block 50312. When assembling, first the first mounting block 50331 and the first matching block 50311 are pre-clamped and fitted, and then the filter plate 5031 is rotated. The second matching block 50312 is buckled to the second mounting block 50332, and finally the filter plate 5031 is pressed downward until a top of the first mounting block 50331 abuts against the first matching block 50311 and a bottom of the second matching block 50312 abuts against the second mounting block 50332. At this time, the filter plate 5031 is stably fixed on the connecting frame 5033.

Specifically, the first mounting block 50331 is arranged in a long strip, a first matching groove 50313 is arranged in the first matching block 50311. When the filter plate 5031 is assembled on the connecting frame 5033, the first mounting block 50331 is housed in the first matching groove 50313 and abuts against a top inner side wall of the first matching groove 50313. That is to say, the first matching groove 50313 is open at a side and bottom of the first matching block 50311, and a top of the first matching block 50311 is not open, so that when assembling, the first matching block 50311 is directly assembled into the connecting frame 5033 from top to bottom, and the first mounting block 50331 is inserted into the first matching groove 50313 from bottom to top. In some embodiments, in order to ensure that the first mounting block 50331 can be smoothly inserted into the first matching groove 50313, the embodiment of the disclosure is provided with an inclined first guiding surface 50333 on a top outer side of the first mounting block 50331 to guide the first mounting block 50331 to be inserted into the first matching groove 50313.

The second mounting block 50332 is arranged in the stepped shape, which includes a first mounting part 50334 protruding outwards from the connecting frame 5033 and a second mounting part 50335 protruding outwards from the first mounting part 50334. An upper surface of the second mounting part 50335 is lower than an upper surface of the first mounting part 50334. A second matching groove 50314 is arranged in the second matching block 50312. When the filter plate 5031 is assembled on the connecting frame 5033, the first mounting part 50334 is housed in the second matching groove 50314 and a lower surface of the second matching block 50312 abuts against an upper surface of the second mounting part 50335. Correspondingly, the second matching groove 50314 is open at a side and bottom of the second matching block 50312, and a top of the second matching block 50312 is not open, so that when assembling, the second matching block 50312 is also directly assembled into the connecting frame 5033 from top to bottom, the first mounting part 50334 of the second mounting block 50332 is inserted into the second matching groove 50314 from bottom to top until the lower surface of the second matching block 50312 abuts against the upper surface of the second mounting part 50335.

In some embodiments, in order to ensure that the second mounting block 50332 can be smoothly inserted into the second matching groove 50314, the embodiment of the disclosure sets the upper surface of the first mounting part 50334 to be lower than an upper surface of the first mounting block 50331, and at the same time is provided with an inclined second guiding surface 50336 on a top outer side of the first mounting part 50334 to guide the first mounting part 50334 to be inserted into the second matching groove 50314. In order to ensure an abutting stability of the second matching block 50312 and the second mounting part 50335, the upper surface of the second mounting part 50335 is set as a plane 50338, and a lower surface of the second mating block 50312 is also set as the plane, so that the second matching block 50312 and the second mounting part 50335 realize a surface contact.

Please refer to FIG. 41. The connecting frame 5033 is provided with a flat mounting wall 5034, a first side wall 5035 and a second side wall 5036 perpendicular to edges of two sides of the mounting wall 5034. Wherein the first side wall 5035 and the second side wall 5036 are arranged opposite to each other and enclosed together with the mounting wall 5034 to form the second housing cavity 50330. The float 504 is housed in the second housing cavity 50330, and the filter plate 5031 is assembled on one side of the mounting wall 5034 away from the second housing cavity 50330. The first side wall 5035 and the second side wall 5036 are provided with a sliding groove 5037, the two sides of the float 504 are provided with a sliding block 5041, and the sliding block 5041 is housed in the sliding groove 5037 and can slide up and down along the sliding groove 5037. In some embodiments, two sliding blocks 5041 are arranged on each side edge of the float 504. Wherein, the sliding block 5041 located at a bottom is used for abutting against a bottom inner side wall of the sliding groove 5037, and the sliding block 5041 at a top is used for abutting against a top inner side wall of the sliding groove 5037, so as to limit a sliding displacement of the float 504 on the connecting frame 5033.

Further, please refer to FIG. 41 and FIG. 42. In an extending direction of the first side wall 5035 and the second side wall 5036, the sliding groove 5037 is arranged in a form of narrow at a top and wide at a bottom, so as to play a role of guidance. A reinforcing rib 5038 is arranged on a side of the mounting wall 5034 facing the second housing cavity 50330 to increase a structural strength of the mounting wall 5034.

Please refer to FIG. 26, and FIG. 36 through FIG. 38. The filter plate 5031 is sleeved on the sewage recovery tube 5011 and is provided with a plurality of filter holes. A top of the connecting frame 5033 is provided with the blocking plate 5032, and the blocking plate 5032 is located at an upper end of the box 501 and below the air suction port 5021. The blocking plate 5032 is provided with a penetrating air outlet port 50337, and the air outlet port 50337 is communicated with the second housing cavity 50330. A first end of the connecting frame 5033 is connected with the blocking plate 5032, and a second end of the connecting frame 5033 is connected with the filter plate 5031. The size of the float 504 corresponds to the size of the air outlet port 50337 on the blocking plate 5032. The sewage entering by the sewage recovery tube 5011 enters the box 501 after being filtered by the filter plate 5031, and large particle garbage filtered by the filter plate 5031 stays on the filter plate 5031. With the liquid level in the box 501 rising, the float 504 will float upwards along the sliding groove 5037 until the float 504 completely blocks the air outlet port 50337. On one hand, an arrangement of the connecting frame 5033 can filter the large particle garbage in the sewage, and on the other hand, the float can be used to block the air outlet port 50337, and prevent the sewage from entering the suction assembly 400 and causing damage to it.

In summary, the dirty tank 500 of the disclosure is provided with the first mounting block 50331 and the second mounting block 50332 on the connecting frame 5033, and the first matching block 50311 and the second matching block 50312 are correspondingly arranged on the filter plate 5031 simultaneously, so that the first mounting block 50331 may be clamped and matched with the first matching block 50311 first. Then the filter plate 5031 is rotated, the second matching block 50312 is buckled onto the second mounting block 50332, and finally the filter plate 5031 is mounted to enable the top of the first mounting block 50331 to abut against the first matching block 50311, and enable the bottom of the second matching block 50312 to abut against the second mounting block 50332. Then an assembly of the filter plate 5031 and the connecting frame 5033 is realized. Compared with the prior art, in the dirty tank 500 of the disclosure, the filter plate 5031 is designed to be assembled separately from the connecting frame 5033, thereby facilitating a disassembly and cleaning, which may thoroughly clean a dirt on the connecting frame 5033, and preventing the float 504 from being stuck due to the secondary accumulation of the dirt.

The above embodiments only illustrate principles and effects of the disclosure, but are not intended to limit the disclosure. Anyone familiar with this technology may modify or change the above embodiments without departing from a scope of the disclosure. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the technical ideas disclosed in the disclosure shall still be covered by the claims of the disclosure.

Claims

1. A floor cleaning device, comprising: a brush assembly;a frame, connected with the brush assembly;a clean tank, arranged on the frame and being in fluid communication with the brush assembly;a dirty tank, arranged on the frame and being in fluid communication with the brush assembly;a suction assembly, arranged on the frame and connected with the dirty tank;a battery assembly, arranged on the frame, and at least comprising a first battery pack and a second battery pack; anda control system, configured to control the clean tank to supply water to the brush assembly and control the suction assembly to recycle sewage cleaned by the floor brush assembly to the dirty tank.

2. The floor cleaning device according to claim 1, wherein, at least one of the first battery pack and the second battery pack is chargeable independently of the floor cleaning device, the first battery pack is charged independently of the floor cleaning device, the second battery pack is charged through an adapter of the floor cleaning device, the control system controls the first battery pack to be discharged prior to the second battery pack, and at least one of the first battery pack and the second battery pack is detachably mounted on the frame.

3. The floor cleaning device according to claim 2, wherein, the first battery pack and the second battery pack are arranged on a same side of the frame, the first battery pack is arranged above the second battery pack, the first battery pack is assembled or disassembled along a longitudinal axis direction of the floor cleaning device, the second battery pack is assembled or disassembled along a direction transverse to the longitudinal axis direction of the floor cleaning device, one side of the frame is provided with a first battery accommodating cavity and a second battery accommodating cavity, a bottom of the first battery accommodating cavity is provided with a first connecting terminal matched with the first battery pack, the second battery accommodating cavity is provided with a second connecting terminal matched with the second battery pack, and the first connecting terminal and the second connecting terminal are electrically connected with the control system respectively.

4. The floor cleaning device according to claim 3, wherein, a bottom of the first battery accommodating cavity is provided with a pin and a latch, the first battery pack is inserted and mounted in the first accommodating cavity and is locked through the latch, an outside of the second battery pack is provided with a battery pack inner bracket and a battery pack outer bracket, the battery pack outer bracket wraps on an outside of the battery pack inner bracket, a top end of the battery pack outer bracket is provided with a pressing device, and the second battery pack is clamped in the second battery accommodating cavity through the pressing device.

5. The floor cleaning device according to claim 2, wherein, the clean tank, the dirty tank and the suction assembly are arranged on one side of the frame opposite to the battery assembly, at least one of the first battery pack and the second battery pack is configured to supply power to a second device, and at least one of the first battery pack and the second battery pack is provided with a USB port and/or a TYPE-C port.

6. The floor cleaning device according to claim 2, wherein, a top of the dirty tank is provided with an air suction port, the dirty tank is communicated with the suction assembly through the air suction port, and an inside of the dirty tank is provided with an air passage communicated with the brush assembly.

7. The floor cleaning device according to claim 1, wherein, the clean tank comprises: a fluid tank, provided with an outlet; anda valve assembly, mounted on the outlet, and comprising: a control structure, arranged in the outlet, anda leak-proof structure, connected with the control structure, and provided with an opening-closing unit;wherein, the clean tank is convertible between a first state and a second state,in the first state, the clean tank is mounted on the frame, the opening-closing unit and the control structure are opened by the frame, and the fluid tank provides fluid to the brush assembly,in the second state, the clean tank is separated from the frame, the control structure is reset, the opening-closing unit is automatically closed, and the fluid tank stops providing fluid to the brush assembly.

8. The floor cleaning device according to claim 7, wherein, the leak-proof structure is provided with a cavity space communicated with the outlet, the control structure comprises a valve pushing rod, a spring, a sealing sleeve and a pushing rod cap, the pushing rod cap is connected with the leak-proof structure, the valve pushing rod is moveable between the pushing rod cap and the cavity space, the spring is mounted on an end of the valve pushing rod towards the pushing rod cap, the sealing sleeve is mounted at one end of the valve pushing rod towards the cavity space, the frame is provided with a push rod, and a size of the opening-closing unit matches a size of the push rod.

9. The floor cleaning device according to claim 8, wherein, the valve pushing rod is provided with a protruding flange extending outward along a radial direction, the protruding flange is arranged between the spring and the sealing sleeve, the cavity space comprises a first cavity space to accommodate the valve pushing rod and a second cavity space to contain leakage, and a supporting structure of the valve pushing rod is arranged between the first cavity space and the second cavity space.

10. The floor cleaning device according to claim 9, wherein, the supporting structure is provided with a supporting inclined plane, the supporting inclined plane and the sealing sleeve are in an interference fit under an effect of the spring to form a sealing structure, the opening-closing unit is arranged at one end of the second cavity space away from the first cavity space, a returning distance of the valve pushing rod in the first cavity space is less than a distance from the supporting structure to the opening-closing unit, and a central axis of the valve pushing rod is on a same straight line with a center line of the cavity space.

11. The floor cleaning device according to claim 1, wherein, the clean tank comprises: a fluid tank, provided with an outlet; anda valve assembly, mounted on the outlet, and comprising: a control structure, arranged in the outlet, anda leak-proof structure, connected with the control structure, and comprising: a bracket, provided with a first cavity space to accommodate the control structure therein,an elastic protective cover, connected with the bracket, at least partially located below the bracket, and a second cavity space to store leakage being arranged inside a part of the elastic protective cover that is located below the bracket, andan opening-closing unit, arranged at one end of the second cavity space away from the bracket, and comprising a cutting slit or a plurality of cross cutting slits arranged on the elastic protective cover.

12. The floor cleaning device according to claim 11, wherein, the cutting slit is in a cross-type structure, one end of the elastic protective cover away from the bracket is provided with a concavity concaving to an inside of the cavity space, the cutting slit is arranged on the concavity, a spacing is arranged between an end part of the cutting slit and an edge of the elastic protective cover, the valve assembly further comprises a valve cover, and the control structure and the leak-proof structure are fixed on the outlet of the fluid tank through the valve cover.

13. The floor cleaning device according to claim 1, further comprising: a sewage recovery passage, located in the dirty tank; anda handle assembly, mounted on the frame;wherein, the brush assembly is arranged at a bottom of the frame and comprises a housing, a rolling brush assembly and a driving device, the rolling brush assembly is mounted in the housing and is driven by the driving device, the housing comprises a rear housing, an upper cover and a front cover, the upper cover and the rear housing are mutually assembled and enclosed to be a first housing cavity, the driving device is housed in the first housing cavity, an accommodating cavity is arranged at a position of the rear housing corresponding to the front cover position, the rolling brush assembly is housed in the accommodating cavity and is covered by the front cover, the rear housing comprises a separating wall separating the first housing cavity from the accommodating cavity, a first through hole and a second through hole are arranged on the separating wall, the first through hole is configured to communicate the first housing cavity with the accommodating cavity, and the second through hole is configured to communicate the accommodating cavity with the sewage recovery passage.

14. The floor cleaning device according to claim 13, wherein, the first housing cavity is enclosed by four housing walls arranged in the rear housing, the housing wall arranged close to the separating wall is defined as a first housing wall, an opening is arranged on the first housing wall, the opening is communicated with the first through hole, and the opening is concave downward from a top of the first housing wall.

15. The floor cleaning device according to claim 14, wherein, the rear housing further comprises a connecting wall connecting the separating wall with the first housing wall, there are two connecting walls, an airflow passage is formed between the opening and the first through hole, the two connecting walls are arranged on two sides of the first through hole, and in a vertical direction, the opening is located at a top of the airflow passage, and the first through hole is located at a bottom of the airflow passage.

16. The floor cleaning device according to claim 13, wherein, the second through hole is arranged in a middle position of the separating wall, the first through hole is located at a side of the second through hole, a suction hood is further arranged in the rear housing, a first end of the suction hood is communicated with the second through hole, a second end of the suction hood is communicated with the sewage recovery passage, and the second through hole is configured to enable sewage and sewage gas in the accommodating cavity to enter the suction hood, and enter the dirty tank through the sewage recovery passage.

17. The floor cleaning device according to claim 16, wherein, the suction assembly is arranged above the dirty tank and configured to form a negative pressure inside the dirty tank, the sewage and sewage gas in the accommodating cavity enter the suction hood through the second through hole and enter the dirty tank through the sewage recovery passage, a top of the dirty tank is provided with a gas filter, the gas filter is configured to filter the sewage gas, and the gas filter is HEPA filter.

18. The floor cleaning device according to claim 1, further comprising: a handle assembly, mounted on the frame;wherein, the brush assembly is arranged at a bottom of the frame, the dirty tank comprises a box, a cover body arranged and covering at a top of the box and a filter frame housed in the box, the filter frame comprises a connecting frame, a float slidably connected with the connecting frame and a filter plate assembled and fixed on the connecting frame, a protruding first mounting block is arranged at a first side of the connecting frame, a protruding second mounting block is arranged at a second side of the connecting frame arranged oppositely, the filter plate is correspondingly provided with a first matching block and a second matching block, after the first mounting block is clamped and matched with the first matching block, the filter plate is rotated, so that the second matching block is buckled to the second mounting block, the filter plate is rotated until a top of the first mounting block abuts against the first matching block and a bottom of the second matching block abuts against the second mounting block.

19. The floor cleaning device according to claim 18, wherein, the first mounting block is strip-shaped, the first matching block is provided with a first matching groove therein, and the first mounting block is housed in the first matching groove and abuts against a top inner side wall of the first matching groove, the second mounting block is step-shaped and comprises a first mounting part protruding outwards from the connecting frame and a second mounting part protruding outwards from the first mounting part, an upper surface of the second mounting part is lower than an upper surface of the first mounting part, a second matching groove is arranged in the second matching block, the first mounting part is housed in the second matching groove, and a lower surface of the second matching block abuts against the upper surface of the second mounting part.

20. The floor cleaning device according to claim 19, wherein, the upper surface of the first mounting part is lower than an upper surface of the first mounting block, an inclined first guiding surface is arranged at a top outer side of the first mounting block to guide the first mounting block to be inserted into the first matching groove, an inclined second guiding surface is arranged at a top outer side of the first mounting part to guide the first mounting part to be inserted the second matching groove, and the upper surface of the second mounting part is a flat plane.