Water or cleaning fluid can be applied to a mechanical part using a high-pressure nozzle of a parts cleaning system to wash dirt, oil, grease, and other contaminants from mechanical parts that have been removed from devices, such as construction equipment. The cleaning fluid can include abrasive media, detergent powder, or other media encapsulated in a carrier such as water. Applying cleaning fluid to the part can result in any number of undesirable outcomes, including a portion of the media remaining on the part and rendering it potentially unsuitable for its intended purpose, or the cleaning fluid mixing with the contaminants and generating potentially hazardous waste.
Many aspects of the present disclosure can be better understood with reference to the following drawings. The components in the drawings are not necessarily to scale, emphasis instead being placed upon clearly illustrating the principles of the present disclosure. Moreover, in the drawings, like reference numerals designate corresponding parts throughout the several views.
Disclosed herein are various examples related to systems, apparatus, and devices for separation of particulate matter from fluid. Reference will now be made in detail to the description of the embodiments as illustrated in the drawings, wherein like reference numbers indicate like parts throughout the several views.
Various systems exist for washing or cleaning mechanical parts that have been removed from devices such as construction equipment. In some parts cleaners or parts cleaning systems, a part is loaded onto a tray and a lid is closed. Through integrated gloves, an operator can hold the part and a nozzle, while activating a switch to cause a jet of high-pressure cleaning fluid to be pumped from a reservoir and directed towards the part to be cleaned. An air compressor (not shown) can provide air pressure to increase cleaning performance and pressure. Cleaning fluid can include abrasive beads, detergent powder, or other media encapsulated in a carrier such as water. After being directed towards the part to be cleaned, the cleaning fluid can become mixed with dirt, oil, grease, and other contaminants that washes off the part, such as by dropping through holes in the tray and into the reservoir.
A parts cleaning system can be described as an open-loop system or a closed-loop system depending on how potentially contaminated fluid flows through the system. In an open-loop system, the parts cleaning system can include a drain line and a water line. Fluid that returns to the reservoir (e.g., washing off the part) can recirculate contaminated fluid through the parts cleaning system, or run the potentially contaminated fluid down the drain. In a closed-loop system, the fluid can be run through a filtration process before recirculating it back into the parts cleaning system. Closed-loop systems can include evaporators, neutralizers, and oil skimmers, which can include outside-the-cabinet devices that require frequent checks and maintenance.
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The parts cleaner 103 has two holes 115 through which an operator can insert his or her hands into integrated gloves for manipulating the part, or the nozzle or other components associated with the parts cleaner 103. There is also a viewing window 118 for observing the parts cleaning process. The parts cleaner 103 also includes a hole 116 to accommodate an upper fluid outlet (not shown) from the separation device 203 as will be described.
An operator can activate a switch to cause a jet of fluid (media encapsulated in water, slurry 109, etc.) pumped from the reservoir 106 and high pressure air directed out of a nozzle (not shown) and directed towards the part to be cleaned. The viewing window 118 can become fogged or dirty, for example, due to fluid drops and particulate matter coming into contact with the viewing window 118. Dirt, oil, grease, and other contaminants washing off the part can enter the reservoir 106, making it difficult to use the fluid (e.g., slurry 109) in the reservoir 106 alone to clean media or contaminants off the part, internal cabinet, or to clean the viewing window 118.
According to various embodiments described herein, a separation device 203 is placed in the reservoir 106. The separation device 203 includes an upper fluid outlet (not shown) having a fluid output port. The slurry 109 enters the separation device 203 through one or more fluid exchange ports of the separation device 203 and into a separation chamber of the separation device 203 as will be described in further detail with reference to later figures.
The separation device 203 can be isosceles-trapezoidedly shaped, or a shape of some other two- or three-dimensional figure that has appropriate surfaces or elements for guiding particulate matter as will be described. In one embodiment, the slurry 109 comes in contact with one or more side edge walls that are adapted to guide contaminants of the slurry 109 out through the fluid exchange port. The side edge walls, or other components of the separation device 203, settle out the contaminants according to one or more properties or combination of properties of the contaminants. The contaminants are guided out of the fluid exchange port according to weight, density, size, shape or other properties to create a region of semi-filtered water in the separation device 203.
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Various elements of the parts cleaner 103, the reservoir 106, etc., have been cut away, thereby revealing that one or more sides of the reservoir 106 can be tapered or sloped. According to one embodiment, the separation device 203 rests at an angle on an interior surface 121 of the reservoir 106. According to the various embodiments, the separation device 203 is positioned so that gravity assists in causing heavier particulate matter that is inside the separation device 203 to fall in a desired direction as will be described.
Disclosed herein are various examples of a separation device 203 that can be located, fastened, removably fastened, placed, seated, etc., against the interior surface 121 of the reservoir 106. In one embodiment, the separation device 203 hangs inside or is placed or affixed within or as part of the reservoir 106 below the water level to create a dead zone relative to circulating slurry 109 inside the reservoir 106. The separation device 203 comprises, for example, a separation chamber, which will be described in more detail with reference to the figures below.
The parts cleaner 103 includes a media pump 209 that is used to pump the slurry 109 or other media in the parts cleaner 103. The media pump 209 has an inlet that is in fluid communication with a lower fluid outlet 215 of the reservoir 106. The outlet of the media pump 209 is connected to the nozzle 212 by way of a pipe and/or hose to supply slurry 109 or other fluid media to the nozzle 212 for parts cleaning. A portion of the output of the media pump 209 can also be directed through a hose or pipe back into the reservoir 106 to agitate the slurry that sits in the reservoir 106 so that the slurry 109 that is provided to the nozzle 212 is uniform as can be appreciated.
The nozzle 212 also includes a second inlet to receive compressed air from an air source 210, where the air source comprises, for example, an air compressor to increase cleaning performance and pressure. The cleaning slurry 109 and compressed air are provided to the nozzle 212 so that the slurry 109 may be ejected with force against a part to be cleaned to facilitate the cleaning function as can be appreciated. The semi-filtered fluid pump 211 is in fluid communication with the upper fluid outlet 112 positioned within the separation device 203. The semi-filtered fluid pump 211 may comprise an electric or pneumatic pump that pulls fluid from the upper fluid outlet 112 and provides pressurized, semi-filtered water to the spray apparatus 119 to rinse a part off, or to clean the inside surface of the cabinet or other area of the parts cleaner 103. The output of the semi-filtered fluid pump 211 may also be applied to a spray head 120 or other device that directs the semi-filtered water to the window 118 to clean the window 118. Alternatively, the window 118 may also be cleaned by directing compressed air thereto.
The separation device 203 is depicted as having a wall that rests against an interior surface 121 of the reservoir 106. The upper fluid outlet 112 positioned in the separation device 201 is connected to a hose 206 or other line. This hose 206 is, in turn, coupled to an inlet of the semi-filtered fluid pump 211. The hose 206 may comprise a flexible hose, rigid pipe, or other type of tube. In one embodiment, the hose 206 from the separation device 203 is coupled to the semi-filtered fluid pump 211 to pull water from the separation device 203 and provide semi-filtered water to spray apparatus 119 and/or the spray head 120. The semi-filtered fluid pump 211 may be driven by air (pneumatic) or electricity as can be appreciated. The spray apparatus 119 may comprise, for example, a spray nozzle such as can be attached to a garden hose. Alternatively, the hose 206 may terminate into an open end in the parts cleaning device, where a spray apparatus 119 is not used. The spray apparatus 119 can be directed (e.g., by hand) towards the part to be cleaned, the viewing window 118, or the interior surface of the cabinet of the parts cleaner 103, etc., to remove residual cleaning media.
In an alternative embodiment, a multi-port valve or other fluid control device may be provided that gives alternate paths of fluid flow to the nozzle 212. Such a multi-port valve would include a first inlet connected to the outlet of the media pump 209, and a second inlet connected to the upper fluid output 112. Such a multi-port valve also comprises an outlet connected to the nozzle 212. The multi-port valve may selectively allow the slurry 109 from the reservoir 106 or the semi-filtered water from the separation device 203 to be applied to the nozzle 212 so that the spray apparatus 119 is unnecessary. In this respect, one may switch such a multi-port valve between the slurry 109 and the semi-filtered water from the separation device 203 as desired, although one may wish to purge the line of leftover slurry/semi-filtered water after making the switch from one to the other as can be appreciated.
The system 200 includes a flow control system 213 that controls the operation of the semi-filtered fluid pump 211 according to an embodiment of the present disclosure. The flow control system 213 is electrically coupled, for example, to a solenoid valve 214 that controls whether pressurized air is supplied to the semi-filtered fluid pump 211 in the case that the semi-filtered fluid pump 211 is a pneumatic pump driven by compressed air. Alternatively, the semi-filtered fluid pump 211 may be driven by electricity, where the flow control system 213 may include a solenoid or relay switch to turn power on or off to the semi-filtered fluid pump 211. The flow control system 213 may include a pushbutton, switch, or other control component that causes the flow control system 213 to direct the semi-filtered fluid pump 211 to pump fluid from within the separation device 203 to the spray apparatus 119, the spray head 120, or other device. Alternatively, there may be a hose with an open end that extends from the semi-filtered fluid pump 211 as mentioned above.
According to various embodiments, the flow control system 213 controls when the semi-filtered fluid pump 211 is allowed to turn on or off to ensure that the semi-filtered water that is pulled from the separation device 203 in such a manner that allows particulate matter to separate from the fluid so that slurry 109 is not pulled through the hose 206. That is to say, the separation device 203 provides for a separation chamber of stagnant fluid that is subjected to a reduced amount of agitation relative to the rest of the reservoir 106. Given the still nature of the fluid within this separation chamber, heavier particles will fall toward the bottom of the separation device 203 and will exit the same through fluid exchange ports as will be described. Thus, the fluid that is toward an upper end of the separation device 203 will have less particulate matter in it and can be used for rinsing parts, the window 118, and the interior of the parts cleaning machine 103. If fluid is drawn from the separation chamber defined by the separation device 203 at too fast a rate, then slurry 109 will be pulled into the separation chamber through fluid exchange ports and the resulting agitation will defeat the process of gravitational separation of particulate matter from the fluid.
To ensure this does not happen, the flow control system 213 controls how long the semi-filtered fluid pump 211 is operated so that proper separation of particular matter from the fluid occurs in the separation chamber defined by the separation device 203. In one example embodiment, the semi-filtered fluid pump 211 is switched on and off for predefined periods of time to allow the gravitational separation to occur such that the fluid pumped from the separation device 203 has an acceptable reduced amount of particulate matter. Alternatively, the semi-filtered fluid pump 211 may be specified so that the maximum fluid flow that can be achieved would not cause undue agitation in the separation chamber of the separation device 203 that will defeat the purpose of the separation device 203. Still further, the spray apparatus 119 may include a nozzle with a predefined orifice that restricts the flow therethrough to prevent undue fluid flow from the separation device 203. In addition, other approaches may be employed to ensure that the fluid flow from the separation device 203 does not cause the undue agitation of the fluid within the separation chamber of the separation device 203.
The system 200 may comprise a closed-loop system that includes the parts cleaner 103 or other open-loop or recirculating parts cleaners. As mentioned above, the separation device 203 is submerged in a reservoir 106 that contains a slurry 109 of water, media, and contaminants. The separation device 203 provides for semi-filtered fluid that can be used for the various purposes as mentioned above. The system 200 can provide semi-filtered water to a parts cleaner 103 (e.g., one that would normally require a water line and drain) to convert the parts cleaner 103 from an open-loop system into a closed-loop system that can operate without a drain line and a water line.
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The first wall 218 has an exit port 227. The exit port 227 can for example be a hole that is sized and shaped to accommodate a pipe that provides for the upper fluid outlet 112 (
Each of the side edge walls 230 extends from a respective end of the end edge wall (not shown), and tapers from the end edge wall 224 to a fluid exchange ports 236. A wedge 239 is disposed within the separation chamber 233 and connected to at least one of the first wall 218 and the second wall 221 adjacent to at least one fluid exchange port 236. In some examples, the fluid exchange port 236 includes multiple fluid exchange ports separated by or defined by the wedge 239, the first wall 218, the second wall 221, and the plurality of side edge walls 230. The wedge 239 can be positioned so that the narrow end of the wedge 239 is directed toward the end edge wall 224. In some embodiments, a closed end of the wedge 239 terminates into a peak to prevent buildup of contaminants on the wedge 239 itself. One or more components of the separation device 203 are adapted to guide contaminants of the slurry 109 (
In operation, a pump, such as the semi-filtered fluid pump 211 depicted in
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When the side edge walls 330 and the end edge wall 324 are positioned or seated against the interior surface 121 of the reservoir 106 (e.g., as shown in
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In operation, the upper fluid outlet 412 is defined by a pipe connected to the fitting 412a. A pump, such as the semi-filtered fluid pump 211 depicted in
It should be emphasized that the above-described embodiments of the present disclosure are merely possible examples of implementations set forth for a clear understanding of the principles of the disclosure. Many variations and modifications may be made to the above-described embodiment(s) without departing substantially from the spirit and principles of the disclosure. All such modifications and variations are intended to be included herein within the scope of this disclosure and protected by the following claims.
It should be noted that ratios, concentrations, amounts, and other numerical data may be expressed herein in a range format. It is to be understood that such a range format is used for convenience and brevity, and thus, should be interpreted in a flexible manner to include not only the numerical values explicitly recited as the limits of the range, but also to include all the individual numerical values or sub-ranges encompassed within that range as if each numerical value and sub-range is explicitly recited. To illustrate, a concentration range of “about 0.1% to about 5%” should be interpreted to include not only the explicitly recited concentration of about 0.1 wt % to about 5 wt %, but also include individual concentrations (e.g., 1%, 2%, 3%, and 4%) and the sub-ranges (e.g., 0.5%, 1.1%, 2.2%, 3.3%, and 4.4%) within the indicated range. The term “about” can include traditional rounding according to significant figures of numerical values. In addition, the phrase “about ‘x’ to ‘y’” includes “about ‘x’ to about ‘y’”.
This application claims the benefit of, and priority to, U.S. Provisional Application No. 62/970,527 filed Feb. 5, 2020, the entire contents of which is hereby incorporated herein by reference.
Number | Date | Country | |
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62970527 | Feb 2020 | US |