Patent Application
20210207592
The present disclosure relates to the technical field of propulsion device and, more particularly, to a diaphragm pump and an agriculture unmanned aerial vehicle.
In recent years, diaphragm pump has been widely used in the plant protection industry due to its good corrosion resistance. When a diaphragm pump works, the diaphragm needs to reciprocate. Generally, an eccentric cam mechanism is configured to realize the reciprocating movement of the diaphragm. However, when the diaphragm pump operates for a long time, the eccentric cam mechanism will wear, which can easily cause a reciprocating stroke of the diaphragm to be shortened and the flow rate to be reduced. Thus, the reliability of the pump is reduced.
In accordance with the disclosure, there is provided a diaphragm pump including a pump body mechanism, a diaphragm mechanism, and an eccentric mechanism. The diaphragm mechanism includes a diaphragm. The eccentric mechanism including a bracket assembly and an auxiliary member. The motor mechanism includes a motor. The bracket assembly includes a bracket connected to the diaphragm and a driving member mounted at a motor shaft of the motor. The auxiliary member is mounted at the bracket, arranged corresponding to the driving member, and configured to contact the driving member. The diaphragm mechanism, the motor mechanism, and the eccentric mechanism are mounted at the pump body mechanism. The motor shaft is configured to drive the driving member to reciprocally abut against the auxiliary member to cause the bracket to move together with the auxiliary member to drive the diaphragm to reciprocate.
The above and/or additional aspects and advantages of the present disclosure will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings.
The embodiments of the present disclosure are described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions. The following embodiments described with reference to the accompanying drawings are exemplary, and are only used to explain the present disclosure, and should not be understood as a limitation to the present disclosure.
In the description of the present disclosure, it should be understood that the terms “center,” “longitudinal,” “transverse,” “length,” “width,” “thickness,” “upper,” “lower,” “front,” “back,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” “outer,” “clockwise,” “counterclockwise,” and other directions or positional relationships are based on the orientation or positional relationship shown in the drawings, are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed, and operated in a specific orientation. Therefore, they cannot be understood as a restriction on the present disclosure. In addition, the terms “first” and “second” are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with “first” and “second” may explicitly or implicitly include one or more of the features. In the description of the present disclosure, “multiple” means two or more than two, unless otherwise specifically defined.
In the description of the present disclosure, it should be noted that the terms “mounting,” “connection,” and “coupling” should be interpreted broadly unless otherwise clearly specified and limited. For example, it can be a fixed connection, a detachable connection, or an integrated connection. It can be a mechanical connection or an electrical connection. It can be direct connection, or indirect connection through an intermediate medium, and it can be a communication between two elements or an interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.
Referring to
Referring to
It should be noted that the method of mounting the diaphragm pump 100 at the agricultural unmanned aerial vehicle 1000 can be set according to the specific application environment. For example, the diaphragm pump 100 can be mounted at the vehicle body 200 as shown in
Referring to
It should be noted that in this embodiment, the number of the one-way valve mechanism 20 is two. The two one-way valve mechanisms 20 have the same structure. The embodiments of the present disclosure will take one of the one-way valve mechanisms 20 as an example for description. The number of the diaphragm mechanism 30 is two. The two diaphragm mechanisms 30 have the same structure. The embodiments of the present disclosure will take one of the diaphragm mechanisms 30 as an example for description.
Referring to
Each of the diaphragm mechanisms 30 is at least partially accommodated in the accommodating cavity 113, which facilitates the mounting and disassembly of the diaphragm mechanism 30 and facilitates the individual design of each mechanism. Two mounting cavities 1140 are disposed at a bottom surface 1141 of each of the first mounting grooves 114. The one-way valve mechanism 20 is partially mounted at the two mounting cavities 1140. The configuration of the mounting cavity 1140 can improve the mounting stability of the one-way valve mechanism 20.
The second mounting surface 112 is configured with a groove 115. The groove 115 communicates with the accommodating cavity 113. The groove 115 can be used to position a mounting direction of the motor mechanism to realize a foolproof function.
Referring to
Referring to
It can be understood that the valve cover 22 can be fixed to the pump body 11 via a first fixing member 101, where the first fixing member 101 may be, e.g., a screw. As such, fixing the valve cover 22 to the pump body 11 via the first fixing member 101 can also realize independent fixing of the one-way valve mechanism 20.
Referring to
In this embodiment, when the first one-way valve 211 opens the valve-cover inflow channel 222, the liquid inlet 116 communicates with the valve-cover inflow channel 222, and liquid can enter the valve-cover inflow channel 222 through the liquid inlet 116. When the first one-way valve 211 closes the valve-cover inflow channel 222, the liquid inlet 116 does not communicate the valve-cover inflow channel 222, and the liquid cannot enter the valve-cover inflow channel 222 through the liquid inlet 116. When the second one-way valve 212 opens the valve-cover outflow channel 223, the liquid outlet 117 communicates with the valve-cover outflow channel 223, and the liquid in the valve-cover outflow channel 223 can flow out of the diaphragm pump 100 through the liquid outlet 117. When the second one-way valve 212 closes the valve-cover outflow channel 223, the liquid outlet 117 does not communicate with the valve-cover outflow channel 223, and the liquid in the valve-cover outflow channel 223 cannot flow out of the diaphragm pump 100 through the liquid outlet 117.
In order to improve the stability of the liquid flow, each of the first one-way valve 211 and the second one-way valve 212 includes a valve seat 213, a valve core 214 mounted at the valve seat 213, and an elastic member 215 matched with the valve core 214. The mounting directions of the valve core 214 of the first one-way valve 211 and the second one-way valve 212 are opposite to each other. In order to facilitate the control of the liquid flow, the valve seat 213 of the first one-way valve 211 is provided in the pump body mechanism 10, and the valve seat 213 of the second one-way valve 212 is provided in the valve cover cavity 221.
It should be noted that the elastic member 215 may be, e.g., a spring. One end of the elastic member 215 sleeves the valve seat 213, and the other end sleeves the core 214, so that the valve core 214 can reciprocate stably following the elastic member 215.
In the example shown in
The pump cover 31 is mounted at the pump body mechanism 10 and covers the diaphragm 32 and the valve cover 22. In some embodiments, the diaphragm 32 is disposed in the accommodating cavity 113. The pump cover 31 is mounted at the first mounting surface 111 and covers the diaphragm 32 and the valve cover 22. As such, each mechanism can be individually designed to minimize mechanism dependence and facilitate maintenance. The valve cover 22 fixes the one-way valve 21 to the pump body mechanism 10. Also, when the pump cover 31 is opened, the one-way valve 21 can still be mounted at the pump body mechanism 10 by the valve cover 22, and the one-way valve 21 does not fall off. The valve cover 22 needs to be removed before the one-way valve 21 can be removed. When the diaphragm 32 is being removed, the one-way valve 21 will not be removed, which avoids the risk of losing the parts of the one-way valve 21.
It can be understood that the pump cover 31 can be fixed at the pump body 11 via the second fixing member 102, where the second fixing member 102 may be, e.g., a screw. In this way, when the pump cover 31 needs to be removed, the pump cover 31 can be removed only by unscrewing the second fixing member 102, and then the diaphragm 32 can be removed. When the pump cover 31 is removed, the one-way valve mechanism 20 is still separately and fixedly mounted at the pump body 11 by the first fixing member 101 and will not fall off. The first fixing member 101 needs to be removed before the one-way valve 21 can be removed.
Referring to
The flow channel 313 has an opening 3131 formed at a side surface of the pump cover 31. The plug 33 is arranged in the flow channel 313 and blocks the opening 3131. In this way, the setting of the plug 33 can effectively prevent the liquid from flowing out of the opening 3131. For example, the plug 33 can be detachably mounted at the flow channel 313. When the flow channel 313 needs to be cleaned, only the plug 33 only needs to be opened without disassembling the entire pump cover 31, which saves maintenance cost and time. In an example, the plug 33 is provided in the flow channel 313 by a screw connection.
The diaphragm 32 is detachably connected to the eccentric mechanism 50. As such, the one-way valve mechanism 20 is designed independently from the diaphragm mechanism 30 to ensure that the one-way valve mechanism 20 is not affected when the diaphragm 32 is removed, which simplifies the replacement operation of the diaphragm 32 and avoids the risk of missing parts of the one-way valve 21. The diaphragm 32 is connected to the pump body mechanism 10 through a connection member 321. In some embodiments, the surface of the diaphragm 32 is provided with a connection portion 322. The head of the connection member 321 is provided at the connection portion 322. In this way, the connection between the diaphragm 32 and the connection member 321 can have better stability.
Referring to
It can be understood that the arrangement of the eccentric shaft member 413 enables the power of the motor 41 to be directly transmitted to the eccentric shaft member 413, which reduces transmission loss. It should be noted that the eccentric shaft member 413 can be disposed at the motor shaft 412 in an integrated manner to form an eccentric shaft, which can avoid the problem of weakening the strength of keyslots on the motor shaft 412 or edge trimming.
Referring to
Referring to
Referring to
The bracket assembly 51 includes a bracket 511, a driving member 512, and a support member 513. The bracket 511 is connected to the diaphragm 32. The bracket 511 has a frame shape. The bracket 511 is provided with a mounting through hole 5111. The auxiliary member 52 can be detachably mounted at the bracket 511 through a snap structure, which facilitates the disassembly of the auxiliary member 52 and enables quick replacement. The diaphragm 32 is supported at the bracket 511 by the support 513, so that the diaphragm 32 can have better stability during reciprocating motion.
Referring to
Here, the diaphragm 32 is connected to the bracket 511 through the connection member 321. It should be noted that the connection member 321 may be, e.g., a screw. One end of the connection member 321 may be insert-molded with the diaphragm 32, and the other end thereof may be screwed to the bracket 511 to achieve a fixed connection.
The driving member 512 is mounted at the eccentric shaft member 413. The auxiliary member 52 is provided between the driving member 512 and the side wall of the mounting through hole 5111. The auxiliary member 52 is arranged corresponding to the driving member 512. The auxiliary member 52 is used to contact the driving member 512. When the motor 41 is working, the eccentric shaft member 413 drives the driving member 512 to move, so that the driving member 512 reciprocally abuts against the auxiliary member 52, and the bracket 511 moves together with the auxiliary member 52, such that the bracket 511 drives the diaphragm 32 to reciprocate. As such, the wear problem of the eccentric mechanism 50 is solved by adding the auxiliary member 52. When the diaphragm pump 100 is running, the auxiliary member 52 is worn without damaging or reducing damage to the driving member 512 and the bracket 511, which improves the service life and reliability of the diaphragm pump 100.
The surface of the auxiliary member 52 facing away from the driving member 512 is provided with a first slot 521 and a second slot 522. A frame of the bracket 511 is locked in the first slot 521. The support member 513 is convexly provided with a block 5131. The block 5131 is locked in the second slot 522. In this way, the auxiliary member 52 is detachably mounted at the bracket 511 through a snap structure, and the stability of the auxiliary member 52 in the axial and radial direction can be ensured.
It can be understood that the driving member 512 may be, e.g., a bearing. In this way, the driving member 512 can have a better stability.
It is understandable that in other embodiments, the motor shaft 412 may not be provided with the eccentric shaft member 413, and the driving member 512 is directly sleeved on the motor shaft 412, and an eccentric protrusion is formed at the driving member 512, so that the driving member 512 can reciprocally abuts against the auxiliary member 52. For example, the driving member 512 may be an eccentric bearing sleeved on the motor shaft 412. When the motor shaft 412 rotates, the eccentric bearing makes an eccentric movement, thereby driving the bracket assembly 51 to reciprocate to drive the diaphragm 32 to reciprocate.
In the example shown in
It should be noted that the auxiliary member 52 may be, e.g., a gasket. The auxiliary member 52 can be made of wear-resistant plastic (such as nylon or polyacetal plastic, etc.) or bronze. In order to facilitate the mounting and disassembly of the auxiliary member 52, the whole auxiliary member 52 can be made into a square snap shape, that is, the auxiliary member 52 is mounted at the bracket 511 by a snap structure. When the motor mechanism 40 is removed, the eccentric shaft member 413 is disengaged, and then the auxiliary member 52 can be removed for quick replacement.
Referring to
In summary, the diaphragm pump 100 described above includes a pump body mechanism 10, a diaphragm mechanism 30, a motor mechanism 40, and an eccentric mechanism 50. The diaphragm mechanism 30, the motor mechanism 40 and the eccentric mechanism 50 are mounted at the pump body mechanism 10. The motor mechanism 40 includes a motor 41. The diaphragm mechanism 30 includes a diaphragm 32. The eccentric mechanism 50 includes a bracket assembly 51 and an auxiliary member 52. The bracket assembly 51 includes a bracket 511 and a driving member 512. The bracket 511 is connected to the diaphragm 32. The auxiliary member 52 is mounted at the bracket 511. The driving member 512 is mounted at the motor shaft 412 of the motor 41. The auxiliary member 52 is arranged corresponding to the driving member 512. The auxiliary member 52 is used to contact the driving member 512. When the motor 41 is working, the motor shaft 412 of the motor 41 drives the driving member 512 to move, so that the driving member 512 reciprocally abuts against the auxiliary member 52, and the bracket 511 moves together with the auxiliary member 52, such that the bracket 511 drives the diaphragm 32 to reciprocate.
In the diaphragm pump 100 described above, with the auxiliary member 52, the wear problem of the eccentric mechanism 50 can be solved. When the diaphragm pump 100 is working, the auxiliary member 52 is worn but damage to the driving member 512 and the bracket 511 is avoided or reduced, which improves the service life and reliability of the diaphragm pump 100.
In the present disclosure, unless expressly stipulated and defined otherwise, the first feature being “on” or “under” the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but through other features between them. Moreover, the first feature being “above,” “over,” and “on” the second feature include the first feature being directly above and obliquely above the second feature, or it simply means that the level of the first feature is higher than the second feature. The first feature being “below,” “under” and “beneath” the second feature include the first feature being directly below and obliquely below the second feature, or it simply means that the level of the first feature is lower than the second feature.
The above disclosure provides many different embodiments or examples to realize the different structures of the present disclosure. In order to simplify the disclosure of the present disclosure, the components and settings of the examples are described above. Of course, they are only examples and are not intended to limit the present disclosure. In addition, the present disclosure may repeat reference numerals and/or reference letters in different examples. Such repetition is for the purpose of simplification and clarity, and does not indicate the relationship between the various embodiments and/or settings discussed. In addition, the present disclosure provides examples of various processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and/or the use of other materials.
In the description of this specification, the description with reference to the terms “an embodiment,” “some embodiments,” “exemplary embodiments,” “examples,” “specific examples,” or “some examples,” etc., means that combinations of the specific features, structures, materials, or characteristics described by the embodiments or the examples may be included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials, or characteristics can be combined in an appropriate manner in any one or more embodiments or examples.
Although the embodiments of the present disclosure have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variants can be made to these embodiments without departing from the principle and purpose of the present disclosure. The scope of the invention is defined by the claims and their equivalents.
| Number | Date | Country | Kind |
|---|---|---|---|
| 201821620292.9 | Sep 2018 | CN | national |
This application is a continuation of International Application No. PCT/CN2018/119343, filed Dec. 5, 2018, which claims priority to Chinese Application No. 201821620292.9, filed Sep. 30, 2018, the entire contents of both of which are incorporated herein by reference.
| Number | Date | Country | |
|---|---|---|---|
| Parent | PCT/CN2018/119343 | Dec 2018 | US |
| Child | 17212761 | US |
