Filtering cart

Abstract

The embodiment of the utility model provides a filtering cart which comprises a cart body, a filter screen and a collecting device, the filter screen and the collecting device are both arranged on the cart body, the cart body is provided with a supporting part, the filter screen is connected with the supporting part, the filter screen is opposite to the inlet end of the collecting device, and the collecting device is connected with the supporting part. The filter screen is arranged in the collecting device, so that liquid flowing through the filter screen enters the collecting device, a liquid outlet is formed in the bottom of the collecting device, a control valve is arranged at the liquid outlet, and opening and closing of the liquid outlet are controlled through the control valve. Through the arrangement, when the supporting part supports the cleaning frame bearing the product, residual water of the product and the cleaning frame flows into the collecting device after being filtered by the filter screen, and when the control valve opens the liquid outlet, water in the collecting device is smoothly discharged from the liquid outlet, so that the residual water of the cleaning frame and the product cannot fall to the ground, and water accumulation on the ground is avoided; and the safety is improved.

Description

Technical Field

[0001] The present application belongs to the field of product transport technology, and specifically relates to a filtering cart. Background Art

[0002] In industrial production lines, products need to be cleaned. First, the products are placed on a cleaning rack, which is then placed in a cleaning line for cleaning. Once cleaning is complete, the rack is removed from the line and transferred to a drying oven using a cart. However, during this transfer process, residual liquid from the rack and the products can fall to the floor, causing surface pooling and posing safety concerns. Utility Model Content

[0003] The purpose of the embodiments of the present application is to provide a filter cart that can solve the problem in the related art of liquid accumulation on the floor during the process of transporting cleaned products by the cart.

[0004] An embodiment of the present application provides a filtering cart, comprising a cart body, a filter screen, and a collecting device, wherein the filter screen and the collecting device are both arranged on the cart body, the cart body is provided with a supporting portion, the filter screen is connected to the supporting portion, and the filter screen is opposite to the inlet end of the collecting device, so that the liquid flowing through the filter screen enters the collecting device, a drain port is provided at the bottom of the collecting device, and a control valve is provided at the drain port, and the opening and closing of the drain port are controlled by the control valve.

[0005] In the embodiment of the present application, the filtration cart is equipped with a filter screen and a collection device. Because the filter screen is connected to the support, when the support supports the product cleaning rack, residual liquid from the products and the cleaning rack can pass through the filter screen. The liquid that flows through the filter screen then flows into the collection device. After the collection process is completed, the control valve is controlled to open the drain port, and the liquid in the collection device is smoothly discharged. This arrangement prevents residual liquid from falling to the ground during the transfer of the cleaning rack and products, preventing floor accumulation and improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 It is a structural schematic diagram of the filtering cart disclosed in the embodiment of the present application;

[0007] Figure 2 is an exploded view of a filtration cart disclosed in an embodiment of the present application;

[0008] Figure 3 is a cross-sectional view of a filtration cart disclosed in an embodiment of the present application;

[0009] Figure 4 yes Figure 3 Enlarged view of point A in the middle.

[0010] Description of reference numerals:

[0011] 100-trolley body, 110-support part, 110a-first step surface, 110b-second step surface, 120-support frame, 120a-accommodation space, 130-handle,

[0012] 200-filter,

[0013] 300-Funnel, 310-Extension,

[0014] 400-collecting device, 410-box body, 410a-drain port, 411-control valve, 420-cover, 421-liquid inlet, 430-fastening part,

[0015] 500-Liquid level observation tube,

[0016] 600-wheel. DETAILED DESCRIPTION

[0017] The following will be combined with the accompanying drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0018] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first," "second," and the like are generally of the same type, and do not limit the number of objects; for example, the first object can be one or more. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0019] The following describes the filtering cart provided in the embodiment of the present application in detail through specific embodiments and their application scenarios in conjunction with the accompanying drawings.

[0020] Please refer to Figure 1-Figure 4The filter cart disclosed in the embodiment of the present application includes a cart body 100, a filter screen 200, and a collection device 400. The cart body 100 is the main component of the filter cart, and the filter screen 200, the collection device 400, and other components of the filter cart are all installed on the cart body 100. The bottom of the cart body 100 is rotatably provided with a rotating wheel 600. The rotating wheel 600 contacts the ground and rotates relative to the ground to realize the movement process of the cart body 100. The cart body 100 drives the components, products, and cleaning racks on it to move together, realizing the transportation process of the products and the cleaning racks. The filter screen 200 is used to filter the cleaned products and the residue carried by the cleaning racks. The collection device 400 is used to collect the liquid that passes through the mesh of the filter screen 200. The liquid can be, but is not limited to, water.

[0021] The filter 200 can be, but is not limited to, a metal mesh. The filter 200 is disposed on the cart body 100. The cart body 100 is provided with a support portion 110, and the filter 200 is connected to the support portion 110. Optionally, the support portion 110 and the filter 200 can be fixedly connected by welding, bonding, or other connection operations. Alternatively, the support portion 110 can directly support the filter 200, and the filter 200 can be placed on the support surface of the support portion 110 to achieve relative fixation between the support portion 110 and the filter 200. The filter 200 can be a square mesh, a circular mesh, etc., and the support portion 110 can also be a square structure, a circular structure, etc. The embodiments of the present application do not limit the specific structures of the filter 200 and the support portion 110. Optionally, the shape of the filter 200 can be compatible with the shape of the support portion 110. Of course, the shape of the filter 200 and the shape of the support portion 110 can also be different.

[0022] The collection device 400 may include a collection box, a collection trough, or other device capable of collecting liquid that passes through the filter 200. The collection device 400 is disposed on the cart body 100. Optionally, the collection device 400 may be disposed inside the cart body 100. The collection device 400 and the cart body 100 may be fixedly connected by welding, bonding, or other connection operations. Alternatively, the collection device 400 may be directly placed inside the cart body 100 to achieve relative fixation between the collection device 400 and the cart body 100.

[0023] The filter 200 is opposite to the inlet end of the collection device 400, so that the liquid flowing through the filter 200 enters the collection device 400. Optionally, the top of the collection device 400 is provided with an opening, which is the inlet end of the collection device 400. The filter 200 is opposite to the opening, so the liquid flowing through the filter 200 directly falls into the interior of the collection device 400 through the opening. Figure 3As shown, a drain port 410a is provided at the bottom of the collection device 400, and a control valve 411 is provided at the drain port 410a. The opening and closing of the drain port 410a is controlled by the control valve 411. The control valve 411 is located outside the collection device 400. When the control valve 411 opens the drain port 410a, the liquid inside the collection device 400 can be discharged through the drain port 410a. When the control valve 411 closes the drain port 410a, the liquid inside the collection device 400 cannot be discharged through the drain port 410a.

[0024] Alternatively, the drain port 410a may be a square port, a circular port, or the like. The inlet of the control valve 411 may be connected to the collection device 400 by welding, bonding, or the like. Alternatively, the inlet of the control valve 411 may be inserted into the drain port 410a to achieve communication between the inlet of the control valve 411 and the drain port 410a. The control valve 411 may be a manual valve, a solenoid valve, or the like. The embodiment of the present application does not limit the type of the control valve 411, as long as the control valve 411 can open and close the drain port 410a.

[0025] In the embodiment of the present application, the filtration cart is additionally equipped with a filter screen 200 and a collection device 400. Since the filter screen 200 is connected to the support portion 110, when the support portion 110 supports the cleaning rack carrying the products, the liquid remaining in the products and the cleaning rack can pass through the filter screen 200. The liquid that flows through the filter screen 200 further flows into the collection device 400. After the collection process is completed, the control valve 411 is controlled to open the drain port 410a, and the liquid in the collection device 400 is smoothly drained. This arrangement prevents residual liquid from falling to the ground during the transfer of the cleaning rack and products, preventing liquid accumulation on the ground and improving safety.

[0026] The filtering cart in the embodiment of the present application can be used in the fields of kitchen waste filtering waste liquid, farm breeding (such as the filter net 200 carries feed and the collection device 400 stores water), outdoor rainwater collection, and workshop sanitation, etc.

[0027] In an alternative embodiment, reference Figure 1 、 Figure 3 as well as Figure 4 As shown, the support portion 110 includes a stepped structure having a first stepped surface 110a and a second stepped surface 110b connected thereto. The first stepped surface 110a intersects with the second stepped surface 110b, and optionally, the first stepped surface 110a and the second stepped surface 110b are perpendicular to each other. Of course, the first stepped surface 110a and the second stepped surface 110b may also intersect but not be perpendicular to each other. The filter 200 overlaps the first stepped surface 110a, supporting the filter 200, and the second stepped surface 110b engages with the filter 200 in a limited manner, and optionally, the second stepped surface 110b engages with the filter 200 in a limited manner.

[0028] This arrangement allows the filter 200 to be placed directly on the first stepped surface 110a, securing the position of the filter 200 without requiring any connection operations, thus simplifying the installation process. The filter 200 can also be removed and replaced as needed. Furthermore, the second stepped surface 110b engages with the filter 200, limiting its position and preventing it from shifting relative to the support portion 110. This further facilitates securing the filter 200 relative to the support portion 110.

[0029] In a further embodiment, the first stepped surface 110a can support a product-carrying cleaning rack via the filter 200, such that the second stepped surface 110b engages with the cleaning rack in a limiting manner. Optionally, the second stepped surface 110b can engage with the cleaning rack in a limiting manner. Specifically, when the filter 200 is placed on the first stepped surface 110a and the product-carrying cleaning rack is placed on the filter 200, the second stepped surface 110b engages with the edges of the filter 200 and the cleaning rack, respectively. The cleaning rack can be, but is not limited to, a hanging basket.

[0030] With this embodiment, the step structure is not only used to install the filter 200 and limit the filter 200, but also to limit the cleaning rack supported by the filter 200, preventing the cleaning rack from shifting relative to the support portion 110, which is beneficial to improving the stability of the cleaning rack during the product transfer process.

[0031] Of course, in other embodiments, the support portion 110 may not be provided with the second step surface 110 b , and the filter screen 200 and the cleaning rack may be supported only by the first step surface 110 a .

[0032] In an optional embodiment, the step structure may be a block structure, and there may be multiple step structures, each step structure supporting a different position of the edge of the filter screen 200 .

[0033] In another embodiment, the step structure is a strip structure, and the step structure extends along the direction of the edge of the filter screen 200. Optionally, the strip step structure can be an arc structure, a linear structure, or a bent structure. The embodiment of the present application does not limit the shape of the step structure.

[0034] In this embodiment, a strip-shaped step structure is used to support the filter 200. In the direction of the edge extension of the filter 200, the extension lengths of the first step surface 110a and the second step surface 110b are both increased, so the supporting area of ​​the first step surface 110a for the filter 200 is increased, which is beneficial to improving the installation stability of the filter 200. At the same time, the limiting area of ​​the second step surface 110b for the filter 200 and the cleaning rack is also increased, which is more conducive to accurately limiting the filter 200 and the cleaning rack.

[0035] In a further embodiment, the step structure is provided around the filter 200. Optionally, the step structure is a square ring structure and the filter 200 can be a square structure, or the step structure is a circular ring structure and the filter 200 can be a circular structure. In short, each edge of the filter 200 overlaps the first step surface 110a.

[0036] In this embodiment, the step structure is arranged around the filter 200. In the direction of extension of the edge of the filter 200, the extension length of the first step surface 110a and the second step surface 110b is further increased. The first step surface 110a supports various positions of the edge of the filter 200, which is conducive to further improving the installation stability of the filter 200. At the same time, the second step surface 110b is respectively cooperated with various positions of the edge of the filter 200, which is conducive to further accurately limiting the filter 200, and also conducive to further accurately limiting the cleaning rack to prevent the cleaning rack from falling.

[0037] In the scheme of this application, reference is made to Figure 1-Figure 4 As shown, the filter cart further includes a funnel 300, which is located between the filter screen 200 and the collection device 400. Moreover, the funnel 300 is connected to the cart body 100. Optionally, the funnel 300 can be fixedly connected to the cart body 100 by welding, bonding, etc. to fix the relative positions of the filter screen 200, the funnel 300 and the collection device 400.

[0038] The inlet end of the funnel 300 faces the filter 200, and the outlet end of the funnel 300 communicates with the inlet end of the collection device 400. Alternatively, the outlet end of the funnel 300 can be directly opposite the inlet end of the collection device 400 to achieve communication, or the outlet end of the funnel 300 and the inlet end of the collection device 400 can be connected through a connecting pipe or other component. In this way, the liquid passing through the filter 200 enters the interior of the funnel 300 from the inlet end of the funnel 300 and further falls into the collection device 400 through the outlet end of the funnel 300.

[0039] The area of ​​the inlet end of the funnel 300 is usually larger than the area of ​​the outlet end of the funnel 300. Therefore, the funnel 300 is added to facilitate the introduction of most or even all of the liquid passing through the filter 200 into the inlet end of the collection device 400 with a smaller flow area, which is more conducive to collecting the liquid passing through the filter 200 and preventing the liquid from falling to the ground outside the collection device 400 and causing safety problems.

[0040] Of course, in other embodiments, the filtration cart may not be provided with the funnel 300 , and the inlet end of the collection device 400 is directly opposite to the filter screen 200 , so that the liquid flowing through the filter screen 200 directly falls into the interior of the collection device 400 .

[0041] In an alternative embodiment, reference Figure 1 as well as Figure 3-Figure 4 As shown, the inlet end of the funnel 300 is provided with an extension portion 310. The extension portion 310 protrudes from the outer surface of the funnel 300 and overlaps the first step surface 110a. The filter 200 overlaps the first step surface 110a through the extension portion 310. In other words, the first step surface 110a directly supports the extension portion 310, the extension portion 310 directly supports the filter 200, the first step surface 110a directly contacts the extension portion 310, and the extension portion 310 directly contacts the filter 200. Furthermore, the second step surface 110b is in positional engagement with the extension portion 310. Optionally, the second step surface 110b is in positional contact with the extension portion 310. Optionally, the extension portion 310 can be a sheet-like structure, a block-like structure, or the like, as long as it protrudes from the outer surface of the funnel 300. The specific shape of the extension portion 310 is not limited in this embodiment of the present application.

[0042] Optionally, the funnel 300 and the extension portion 310 may be split structures, and the two are fixedly connected by welding, bonding, etc.; or, the funnel 300 and the extension portion 310 may be formed into an integral structure by injection molding, etc.

[0043] In this embodiment, the extension portion 310 allows the funnel 300 to be placed directly on the first stepped surface 110a, securing the position of the funnel 300. This eliminates the need for any connection operations, simplifying the installation process of the funnel 300. The funnel 300 can also be removed and placed as needed, enabling removal, maintenance, and replacement. Furthermore, the second stepped surface 110b cooperates with the extension portion 310 to limit the position of the funnel 300, preventing it from shifting relative to the support portion 110 and further facilitating the securement of the funnel 300 relative to the support portion 110.

[0044] In a further embodiment, the extension portion 310 may be a strip-shaped structure, extending along the edge of the inlet end of the funnel 300. Alternatively, the extension portion 310 and the step structure may both be annular structures, with the step structure surrounding the extension portion 310. If the inlet end of the funnel 300 is a square structure, the extension portion 310 may be a square ring structure. Alternatively, if the inlet end of the funnel 300 is a circular structure, the extension portion 310 may be a circular ring structure. In this embodiment, the step structure and the extension portion 310 have the same structure, with the first step surface 110a supporting various positions of the extension portion 310.

[0045] In this embodiment, the step structure is arranged around the extension portion 310. In the direction of the edge extension of the inlet end of the funnel 300, the support area of ​​the first step surface 110a on the extension portion 310 is increased, which is beneficial to further improve the installation stability of the funnel 300. At the same time, the second step surface 110b is respectively cooperated with the various position limits of the extension portion 310, which is beneficial to further accurately limit the funnel 300.

[0046] In an alternative embodiment, reference Figure 1-Figure 3 As shown, the collection device 400 includes a liquid collection box, which is provided with a liquid inlet 421. The outlet end of the funnel 300 is opposite to the liquid inlet 421, and the outlet end of the funnel 300 extends into the liquid inlet 421. Optionally, the liquid collection box may include a connected box body 410 and a cover body 420. The top of the box body 410 is provided with an opening, and the cover body 420 is provided at the opening to close the opening. The box body 410 and the cover body 420 can jointly form a space for accommodating liquid. The liquid inlet 421 is provided on the cover body 420. The liquid inlet 421 can be square, circular, etc., and the embodiment of the present application does not limit the shape of the liquid inlet 421. The bottom of the box body 410 is provided with a drain port 410a.

[0047] With this embodiment, the outlet end of the funnel 300 extends into the liquid inlet 421. Then, the liquid flowing out of the outlet end of the funnel 300 directly enters the liquid collecting tank, thereby accurately introducing the liquid passing through the filter 200 into the liquid collecting tank, avoiding liquid splashing caused by the outlet end of the funnel 300 not extending into the liquid inlet 421, and further preventing the liquid from falling outside the liquid collecting tank.

[0048] Optionally, the box body 410 and the cover body 420 can be fixedly connected by welding, bonding or other non-detachable means; or, the box body 410 and the cover body 420 can be fixedly connected by snap connection, bolt connection or other detachable means. Figure 1 and Figure 2As shown, the cover body 420 and the box body 410 can be rotatably connected by a hinge or other structure, and the box body 410 is provided with a fastening part 430. When the cover body 420 is rotated to close the opening, the fastening part 430 is fastened to the cover body 420, and the cover body 420 and the box body 410 are relatively fixed, so that the cover body 420 closes the opening. With this arrangement, the user can open or close the opening as needed.

[0049] Of course, in other embodiments, the outlet end of the funnel 300 may not extend into the liquid inlet 421 , and the outlet end of the funnel 300 may be directly opposite to the liquid inlet 421 .

[0050] In the scheme of this application, reference is made to Figure 1-Figure 3 As shown, the cart body 100 includes a support frame 120, a support portion 110 is disposed on top of the support frame 120, and a receiving space 120a is defined within the support frame 120. The funnel 300 and the collection device 400 are both located within the receiving space 120a. Optionally, the support portion 110 and the support frame 120 can be fixedly connected by welding, bonding, or the like.

[0051] Alternatively, the support frame 120 may be a cubic structure, comprising a base plate and a plurality of spaced support rods, the support rods being located at the edges of the base plate and extending along the thickness direction of the filter screen 200. The first end of each support rod is connected to the base plate, and the second end of each support rod is connected to the support portion 110. The liquid collection tank is directly placed on the base plate. In this way, the base plate, the support rods, and the support portion 110 together form the accommodation space 120a. Of course, the support frame 120 may also have other shapes.

[0052] According to this embodiment, the support frame 120 provides accommodation space for the funnel 300 and the collecting device 400. The funnel 300 and the collecting device 400 do not need to occupy space outside the cart body 100, which is conducive to a more compact structure, reduces the space occupied by the filter cart, and realizes the miniaturization of the filter cart.

[0053] Optionally, the cart body 100 further includes a handle 130, which is connected to the support frame 120. Optionally, the handle 130 can be fixedly connected to the support frame 120 by welding, bonding, etc. In this manner, the user can accurately control the moving distance and direction of the filtration cart by operating the handle 130.

[0054] Of course, in other embodiments, the cart body 100 may not be provided with the support frame 120 , and the funnel 300 and the collecting device 400 may be located outside the cart body 100 , that is, the funnel 300 and the collecting device 400 occupy other space outside the cart body 100 .

[0055] In this embodiment, the box body 410 , the cover 420 , the support frame 120 , and the funnel 300 are all made of stainless steel.

[0056] In the scheme of this application, reference is made to Figure 1 and Figure 2 As shown, the collection device 400 includes a liquid collection tank, which is equipped with a liquid level observation tube 500. The liquid level observation tube 500 is located outside the liquid collection tank, and the first and second ports of the liquid level observation tube 500 are respectively connected to the liquid collection tank, so that the liquid level observation tube 500 communicates with the interior of the liquid collection tank. The liquid level observation tube 500 can be a round tube, a square tube, etc., and is transparent, specifically, but not limited to, acrylic.

[0057] Optionally, the side wall of the liquid collecting tank is provided with a first opening and a second opening, the first opening is located above the second opening, and the first port of the liquid level observation tube 500 and the side wall of the liquid collecting tank, and the second port of the liquid level observation tube 500 and the side wall of the liquid collecting tank can be fixedly connected by welding, bonding, etc., so that the first port of the liquid level observation tube 500 is connected to the first opening, and the second port of the liquid level observation tube 500 is connected to the second opening.

[0058] In this embodiment, by providing a liquid level observation tube 500, the liquid level of the liquid collecting tank can be observed from outside the liquid collecting tank. When the liquid level is high, the control valve 411 can be opened in time to drain the liquid, thereby preventing the liquid level in the liquid collecting tank from being too high.

[0059] Of course, in other embodiments, the filtration cart may not be provided with the liquid level observation tube 500. Instead, a window may be provided on the side wall of the liquid collecting tank to observe the liquid level in the liquid collecting tank. Optionally, a waterproof membrane may be provided at the window to seal the window, and the waterproof membrane may be a transparent structure.

[0060] In an optional embodiment, a plurality of rotating wheels 600 are rotatably disposed at the bottom of the cart body 100. Optionally, there may be four rotating wheels 600, each located at a corner of the support frame 120. Of course, other numbers of rotating wheels 600 may also be provided; the rotating wheels 600 are disposed at the bottom of the support frame 120. Each rotating wheel 600 is non-detachably connected to the cart body 100.

[0061] Optionally, the rotating wheel 600 includes a wheel body, a rotating shaft and a wheel cover, the wheel cover covers the outside of the wheel body, the rotating shaft passes through the center of the wheel body and is connected to the wheel cover, and the wheel cover is connected to the cart body 100 by welding, bonding or other non-detachable means, so that each wheel body can rotate in place, and the position of each wheel body relative to the cart body 100 is constant.

[0062] In another embodiment, each wheel 600 is detachably connected to the cart body 100. Optionally, the wheel cover can be detachably connected to the cart body 100 by a snap connection, a bolt connection, or other means. Further, optionally, one of the wheel cover and the support frame 120 is provided with a snap-in slot, and the other is provided with a snap-in piece, and when the snap-in piece is inserted into the snap-in slot, the wheel cover and the support frame 120 are snap-fitted together. Alternatively, one of the wheel cover and the support frame 120 is provided with a through hole, and the other is provided with a threaded hole, and a threaded fastener such as a bolt or screw is inserted through the through hole and into the threaded hole to connect the wheel cover and the support frame 120.

[0063] With this embodiment, users can install and remove the corresponding wheels 600 as needed, and perform repairs and replacements to avoid abnormal rotation of individual wheels 600 affecting the movement of the filter cart, thereby ensuring smooth transfer of products and cleaning racks.

[0064] Optionally, the rotating wheel 600 may be a universal wheel that can rotate in all directions, which helps the filtering cart to move more flexibly.

[0065] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

Claims

1. A filtration cart, characterized in that: The invention comprises a cart body (100), a filter screen (200) and a collecting device (400), wherein the filter screen (200) and the collecting device (400) are both arranged on the cart body (100), the cart body (100) is provided with a support portion (110), the filter screen (200) is connected to the support portion (110), and the filter screen (200) is opposite to the inlet end of the collecting device (400), so that the liquid flowing through the filter screen (200) enters the collecting device (400), and a drain port (410a) is provided at the bottom of the collecting device (400), and a control valve (411) is provided at the drain port (410a), and the opening and closing of the drain port (410a) are controlled by the control valve (411).

2. The filtration cart according to claim 1, characterized in that The support portion (110) comprises a step structure, wherein the step structure is provided with a first step surface (110a) and a second step surface (110b) connected to each other, the filter (200) is overlapped on the first step surface (110a), the second step surface (110b) and the filter (200) are position-limited and matched, and the first step surface (110a) can support a cleaning rack carrying a product through the filter (200), so that the second step surface (110b) and the cleaning rack are position-limited and matched.

3. The filtration cart according to claim 2, characterized in that The step structure is a strip-shaped structure, and the step structure extends along the direction in which the edge of the filter screen (200) extends.

4. The filtration cart according to claim 3, characterized in that The step structure is arranged around the filter screen (200).

5. The filtration cart according to claim 2, characterized in that The filtering cart further comprises a funnel (300), the funnel (300) being located between the filter screen (200) and the collecting device (400), and the funnel (300) being connected to the cart body (100), the inlet end of the funnel (300) being opposite to the filter screen (200), and the outlet end of the funnel (300) being connected to the inlet end of the collecting device (400).

6. The filtration cart according to claim 5, characterized in that An extension portion (310) is provided at the inlet end of the funnel (300), the extension portion (310) protruding from the outer surface of the funnel (300), the extension portion (310) overlapping the first step surface (110a), the filter screen (200) overlapping the first step surface (110a) through the extension portion (310), and the second step surface (110b) and the extension portion (310) are limitedly matched.

7. The filtration cart according to claim 5, characterized in that The collecting device (400) comprises a liquid collecting box, the liquid collecting box is provided with a liquid inlet (421), the outlet end of the funnel (300) is opposite to the liquid inlet (421), and the outlet end of the funnel (300) extends into the liquid inlet (421).

8. The filtration cart according to claim 5, characterized in that The cart body (100) includes a support frame (120), the support portion (110) is arranged on the top of the support frame (120), a receiving space (120a) is provided inside the support frame (120), and the funnel (300) and the collecting device (400) are both located in the receiving space (120a).

9. The filtration cart according to claim 1, wherein: The collecting device (400) comprises a liquid collecting box, the liquid collecting box is provided with a liquid level observation tube (500), the liquid level observation tube (500) is located outside the liquid collecting box, and a first port and a second port of the liquid level observation tube (500) are respectively connected to the liquid collecting box, so that the liquid level observation tube (500) is in communication with the interior of the liquid collecting box.

10. The filtration cart according to claim 1, wherein: A plurality of rotating wheels (600) are rotatably provided at the bottom of the cart body (100), and each rotating wheel (600) is detachably connected to the cart body (100).

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