Suspension suction filtration device

The suspension filtration device, which uses an automatic guided vehicle and a driving component to work together, solves the tedious problem of manual disassembly of the medicine tray filter, realizes the automatic replacement of the filter, and improves production efficiency.

CN120679236APending Publication Date: 2025-09-23CHONGQING YANYU ELECTROMECHANICAL TECH CO LTD
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Patent Information

Application Number
CN202511130588.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-08-13
Publication Date
2025-09-23

AI Technical Summary

Technical Problem

In the existing suspension filtration process, the removal, replacement and cleaning of the medicine tray filter require manual operation, which is time-consuming and labor-intensive, increases the labor intensity of workers and causes long production line downtime, affecting production efficiency.

Method used

A suspension filtration device was designed, which used an automatic guided vehicle to carry the medicine tray filter. The driving component and the clamping cylinder were used to realize the automatic removal and replacement of the medicine tray filter. Combined with the coordinated movement of the lifting plate and the moving component, the filter was automatically installed and removed, reducing manpower consumption.

Benefits of technology

The automatic disassembly and replacement of the medicine tray filter is realized, which reduces manpower consumption, improves production efficiency and shortens the downtime of the production line.

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Abstract

The invention relates to the technical field of suspension liquid, in particular to a suspension liquid suction filtration device which comprises a rack and further comprises a filtering assembly, and the filtering assembly comprises a lifting plate, a supporting frame, a rotating shaft, a hook claw, a movable top plate, a filtering barrel, a medicine tray filtering net, a middle bin, a driving component, a moving component, a lifting component and a medicine feeding component. The medicine tray filter screen is grabbed through movement of the hook claws, and the movable top plate drives the medicine tray filter screen to move, install and butt joint, so that the whole device can automatically disassemble and replace the medicine tray filter screen, the labor consumption for disassembling, replacing and cleaning the medicine tray filter screen is reduced, and the production efficiency is improved.
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Description

Technical Field

[0001] The invention relates to the technical field of suspensions, in particular to a suspension filtration device. Background Art

[0002] During the production, storage, and use of traditional suspension solutions, impurities such as solid particles, colloids, and microorganisms are often contaminated due to factors such as raw material impurities, process residues, microbial contamination, or chemical reactions. These impurities not only affect the quality of the solution but may also negatively impact the safety and efficacy of the medication.

[0003] The existing suspension liquid filtering and cleaning structure usually directly connects a filter screen installed in the device to filter impurities in the suspension liquid through the filter holes of the filter screen, thereby preventing impurities from affecting the quality of the liquid and also avoiding negative impacts on the safety and efficacy of the medication.

[0004] However, in the existing suspension filtration process, the removal, replacement and cleaning of the medicine tray filter usually require manual operation, which is not only time-consuming and labor-intensive, but also increases the labor intensity of workers. At the same time, since the removal and replacement of the medicine tray filter requires manual operation and the process is cumbersome, it leads to a long downtime of the production line, which in turn affects the overall production efficiency. Summary of the Invention

[0005] The purpose of the present invention is to provide a suspension filtration device, which aims to solve the problem that in the existing suspension filtration process, the disassembly, replacement and cleaning of the medicine tray filter usually require manual operation, which is not only time-consuming and labor-intensive, but also increases the labor intensity of workers. At the same time, since the disassembly and replacement of the medicine tray filter require manual operation and the process is cumbersome, it leads to a long downtime of the production line, thereby affecting the overall production efficiency.

[0006] To achieve the above object, the present invention provides a suspension filtration device, comprising a frame,

[0007] Also includes filtering components,

[0008] The filter assembly includes a lifting plate, a support frame, a rotating shaft, a hook, a movable top plate, a filter barrel, a medicine tray filter, an intermediate warehouse, a driving member, a movable member, a lifting member and a medicine feeding member, the lifting plate is connected to the frame through the driving member and is located on one side of the frame, the support frame is fixedly connected to the lifting plate and is located on one side of the lifting plate, the rotating shaft is rotatably connected to the support frame and is located on one side of the support frame, the hook is fixedly connected to the rotating shaft and is located on one side of the rotating shaft, the movable top plate is connected to the frame through the movable member, the filter barrel is connected to the movable top plate and is located on one side of the movable top plate, the medicine tray filter is arranged on the movable top plate and is located on one side of the movable top plate, the intermediate warehouse is connected to the frame through the lifting member, the driving member is arranged on the frame and connected to the lifting plate, the movable member is arranged on the frame and connected to the movable top plate, the lifting member is arranged on the frame and connected to the intermediate warehouse, and the medicine feeding member is arranged on the frame.

[0009] In which, the driving component includes a first screw rod, a first movable seat and a first mounting plate, the first screw rod is arranged on the frame and is located on one side of the frame; the first movable seat is arranged on the first screw rod, and the first mounting plate is fixedly connected to the first movable seat and is located on one side of the first movable seat.

[0010] Wherein, the driving component further includes a first cylinder, which is arranged on the first mounting plate and connected to the lifting plate, and is located on a side of the first mounting plate close to the lifting plate.

[0011] Wherein, the driving component further includes a first limiting bracket, which is fixedly connected to the frame and connected to the first mounting plate, and is located on a side of the frame close to the first mounting plate.

[0012] Wherein, the movable component includes a second screw rod and a second movable seat, the second screw rod is arranged on the frame and is located on one side of the frame; the second movable seat is arranged on the second screw rod and is fixedly connected to the movable top plate, and is located on the side of the second screw rod close to the movable top plate.

[0013] In which, the lifting component includes a second mounting plate, a second cylinder and a connecting frame, the second mounting plate is fixedly connected to the frame and is located on one side of the frame; the second cylinder is arranged on the second mounting plate and is located on one side of the second mounting plate; the connecting frame is connected to the output end of the second cylinder and is fixedly connected to the intermediate warehouse, and is located on the side of the second cylinder close to the intermediate warehouse.

[0014] Wherein, the medicine feeding component includes a pipe feeding bracket and a medicine feeding pipe, the pipe feeding bracket is fixedly connected to the frame and is located on one side of the frame; the medicine feeding pipe is arranged on the pipe feeding bracket and is located on the side of the pipe feeding bracket close to the intermediate warehouse.

[0015] Wherein, the cleaning assembly further includes a clamping cylinder, which is arranged on the rotating shaft and located on one side of the rotating shaft.

[0016] Wherein, the cleaning component further includes a second limiting bracket, which is fixedly connected to the frame and connected to the movable top plate, and is located on a side of the frame close to the movable top plate.

[0017] The suspension filtration device of the present invention, during operation, usually an automatic guided vehicle (AGV) in a factory (the prior art will not be described in detail here) carries the medicine tray filter to the bottom of the four hook claws, and drives the hook claws connected to the bottom of the lifting plate to move downward through the driving component, and at the same time drives the rotating shaft to rotate through the grasping cylinder connected to the rotating shaft, so that the four hook claws open or retract to both sides, so that the medicine tray filter carried by the automatic guided vehicle can be grabbed and moved upward to reset, and then the driving component drives the lifting plate forward so that the lifting plate moves to the bottom of the movable top plate and the filter barrel, and then drives the lifting plate downward to place the grabbed medicine tray filter on the filter barrel, and starts the moving component to drive the moving plate The top plate drives the medicine tray filter and the filter barrel to move to the left end to just below the intermediate warehouse, and the intermediate warehouse is driven to move downward and dock with the medicine tray filter on the movable top plate by starting the driving component, so that the intermediate warehouse and the cavity in the medicine tray filter are connected, and the medicine liquid can be introduced into the intermediate warehouse through the medicine inlet component, so that the medicine liquid can enter the medicine tray filter through the intermediate warehouse for filtration, and the filtered medicine liquid enters the filter barrel and is discharged through the medicine outlet pipe, so that the medicine tray filter grabbed by the movement of the hook claw and the movable top plate drive the movement and installation docking of the medicine tray filter, so that the entire device can automatically disassemble and replace the medicine tray filter, thereby reducing the manpower consumption when disassembling, replacing and cleaning the medicine tray filter, and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art.

[0019] Figure 1 It is a structural schematic diagram of the suspension filtration device of the present invention.

[0020] Figure 2 It is a schematic structural diagram of the driving component of the present invention.

[0021] Figure 3 It is a structural schematic diagram of the hook claw of the present invention.

[0022] Figure 4 It is a structural schematic diagram of the medicine tray filter of the present invention.

[0023] Figure 5 It is a structural schematic diagram of the mobile component of the present invention.

[0024] Figure 6 It is a structural schematic diagram of the lifting component of the present invention.

[0025] In the figure: 101-frame, 102-lifting plate, 103-support frame, 104-rotating shaft, 105-hook, 106-movable top plate, 107-filter barrel, 108-medicine tray filter, 109-intermediate warehouse, 110-grabbing cylinder, 111-second limiting bracket, 112-first screw rod, 113-first moving seat, 114-first mounting plate, 115-first cylinder, 116-first limiting bracket, 117-second screw rod, 118-second moving seat, 119-second mounting plate, 120-second cylinder, 121-connecting frame, 122-pipe inlet bracket, 123-drug inlet pipeline. DETAILED DESCRIPTION

[0026] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0027] See also Figures 1 to 6 ,in Figure 1 It is a structural schematic diagram of the suspension filtration device of the present invention. Figure 2 It is a schematic structural diagram of the driving component of the present invention. Figure 3 It is a structural schematic diagram of the hook claw of the present invention. Figure 4 It is a structural schematic diagram of the medicine tray filter of the present invention. Figure 5 It is a structural schematic diagram of the mobile component of the present invention. Figure 6 It is a structural schematic diagram of the lifting component of the present invention.

[0028] The present invention provides a suspension filtration device, including a frame 101 and a filter assembly, wherein the filter assembly includes a lifting plate 102, a support frame 103, a rotating shaft 104, a hook 105, a movable top plate 106, a filter barrel 107, a medicine tray filter 108, an intermediate warehouse 109, a driving component, a moving component, a lifting component, a medicine feeding component, a clamping cylinder 110 and a second limiting bracket 111, the driving component includes a first screw rod 112, a first moving seat 113, a first installation 114, a first cylinder 115 and a first limiting bracket 116, the moving component includes a second screw rod 117 and a second moving seat 118, the lifting component includes a second mounting plate 119, a second cylinder 120 and a connecting frame 121, and the medicine feeding component includes a pipe inlet bracket 122 and a medicine inlet pipe 123. The above-mentioned solution solves the problem that in the existing suspension filtration process, the disassembly, replacement and cleaning of the medicine tray filter usually require manual operation, which is not only time-consuming and labor-intensive, but also increases the labor intensity of workers. At the same time, since the disassembly and replacement of the medicine tray filter requires manual operation and the process is cumbersome, it leads to a long downtime of the production line, which in turn affects the overall production efficiency. It can be understood that the above-mentioned solution can be used in situations where the filter needs to be replaced automatically.

[0029] In this embodiment, the lifting plate 102 is connected to the frame 101 through the driving member and is located on one side of the frame 101, the support frame 103 is fixedly connected to the lifting plate 102 and is located on one side of the lifting plate 102, the rotating shaft 104 is rotatably connected to the support frame 103 and is located on one side of the support frame 103, the hook 105 is fixedly connected to the rotating shaft 104 and is located on one side of the rotating shaft 104, the movable top plate 106 is connected to the frame 101 through the moving member, the filter barrel 107 is connected to the movable top plate 106 and is located on one side of the movable top plate 106, the medicine tray filter 108 is provided on the movable top plate 106, and Located on one side of the movable top plate 106, the intermediate warehouse 109 is connected to the frame 101 through the lifting component, the driving component is arranged on the frame 101, and is connected to the lifting plate 102, the movable component is arranged on the frame 101, and is connected to the movable top plate 106, the lifting component is arranged on the frame 101, and is connected to the intermediate warehouse 109, the medicine feeding component is arranged on the frame 101, the lifting plate 102 is connected to the frame 101 through the driving component, and the driving component can drive the lifting plate 102 to move forward and backward or up and down on the frame 101, and there are four support frames 103, and the four support frames 103 are fixed with bolts Installed on the lifting plate 102, there are two rotating shafts 104, the two rotating shafts 104 are rotatably connected to the corresponding four supporting frames 103, and the rotation of the rotating shafts 104 can be supported by the supporting frames 103. There are four hooks 105, and the four hooks 105 are bolted and fixed on the two rotating shafts 104. The rotating shafts are driven to rotate by the grasping cylinder 110 connected to the rotating shafts, so that the four hooks 105 are opened or contracted to both sides, so that the medicine tray filter 108 can be grabbed. The movable top plate 106 is connected to the frame 101 through the movable member, and the movable top plate 106 can be driven by the movable member to move The frame 101 moves left and right, and the filter barrel 107 is welded to the bottom of the movable top plate 106. A discharge pipe is provided at the bottom of the filter barrel 107, through which the liquid medicine collected in the filter barrel 107 can be discharged. The medicine tray filter 108 can be placed on the movable top plate 106, and a sealing strip is provided at the abutment between the medicine tray filter 108 and the movable top plate 106, which can improve the sealing performance of the abutment between the medicine tray filter 108 and the movable top plate 106. The left and right movement of the movable top plate 106 can drive the medicine tray filter 108 and the filter barrel 107 to move left and right, and the intermediate warehouse 109 is connected to the frame 101 through the driving member.The driving member is arranged on the frame 101 and connected to the lifting plate 102. The driving member can drive the lifting plate 102 to move forward and backward or up and down on the frame 101. The moving member is arranged on the frame 101 and connected to the movable top plate 106. The movable top plate 106 can be driven to move left and right on the frame 101 by the moving member. The lifting member is arranged on the frame 101 and connected to the intermediate warehouse 109. The intermediate warehouse 109 can be driven to move up and down on the frame 101 by the lifting member. The medicine feeding member is arranged on the frame 101. , the medicine feeding component can introduce the medicine liquid into the intermediate warehouse 109, so that during operation, the automatic guided vehicle (AGV, the existing technology will not be described here) in the factory usually carries the medicine tray filter 108 to the bottom of the four claws 105, and drives the claws 105 connected to the bottom of the lifting plate 102 to move downward through the driving component, and at the same time drives the rotating shaft to rotate through the gripping cylinder 110 connected to the rotating shaft, so that the four claws 105 are opened or retracted to both sides, so that the medicine tray filter 108 carried by the automatic guided vehicle can be grabbed and moved upward to reset, and then the medicine tray filter 108 carried by the automatic guided vehicle is lifted up and reset. The driving member drives the lifting plate 102 to move forward, so that the lifting plate 102 moves to the bottom of the movable top plate 106 and the filter barrel 107, and then drives the lifting plate 102 to move downward to place the grabbed medicine tray filter 108 on the filter barrel 107, and starts the moving member to drive the movable top plate 106 to drive the medicine tray filter 108 and the filter barrel 107 to move to the left end to the bottom of the intermediate warehouse 109, and drives the intermediate warehouse 109 to move downward and dock with the medicine tray filter 108 on the movable top plate 106, so that the intermediate warehouse 109 and the medicine tray filter The cavity in the net 108 is connected, and the medicine liquid can be introduced into the intermediate chamber 109 through the medicine inlet component, so that the medicine liquid can enter the medicine tray filter 108 through the intermediate chamber 109 for filtration. The filtered medicine liquid enters the filter barrel 107 and is discharged through the medicine outlet pipe. The medicine tray filter 108 grasped by the movement of the hook 105 and the movable top plate 106 drive the movement and installation of the medicine tray filter 108, so that the entire device can automatically disassemble and replace the medicine tray filter 108, thereby reducing the manpower consumption when disassembling, replacing and cleaning the medicine tray filter 108, and improving production efficiency.

[0030] Among them, the first screw rod 112 is arranged on the frame 101 and is located on one side of the frame 101; the first movable seat 113 is arranged on the first screw rod 112, and the first mounting plate 114 is fixedly connected to the first movable seat 113 and is located on one side of the first movable seat 113; the first cylinder 115 is arranged on the first mounting plate 114 and is connected to the lifting plate 102, and is located on the side of the first mounting plate 114 close to the lifting plate 102; the first limiting bracket 116 is fixedly connected to the frame 101 and is connected to the first mounting plate 114 and is located on the side of the frame 101 close to the first mounting plate 114, the first screw rod 112 is arranged on the frame 101, and the first movable seat 113 is arranged on the first screw rod 112, and the first screw rod 112 can convert the rotational motion of the external motor into linear motion to drive the first movable seat 113 to move, the The first mounting plate 114 is bolted and fixedly mounted on the first moving seat 113, so that the movement of the first moving seat 113 can achieve the purpose of driving the first mounting plate 114 to move, the first cylinder 115 is arranged on the first mounting plate 114, and the lifting plate 102 is connected to the output end of the first cylinder 115. Through the driving output of the first cylinder 115 and the movement of the first mounting plate 114, the lifting plate 102 can move forward and backward or up and down on the frame 101. There are two first limiting brackets 116, and the two first limiting brackets 116 are bolted and fixedly mounted on the frame 101. The first mounting plate 114 is slidably connected to the corresponding two first limiting brackets 116, so that the first limiting bracket 116 can connect, support and directionally limit the movement of the first mounting plate 114, thereby making the forward and backward movement of the first mounting plate 114 more stable.

[0031] Secondly, the second screw rod 117 is arranged on the frame 101 and is located on one side of the frame 101; the second movable seat 118 is arranged on the second screw rod 117 and is fixedly connected to the movable top plate 106, and is located on the side of the second screw rod 117 close to the movable top plate 106. The second screw rod 117 is arranged on the frame 101, and the second movable seat 118 is arranged on the second screw rod 117. The second screw rod 117 can convert the rotational motion of the external motor into linear motion to drive the second movable seat 118 to move, so that the movement of the second movable seat 118 can achieve the purpose of driving the movable top plate 106 to move.

[0032] At the same time, the second mounting plate 119 is fixedly connected to the frame 101 and is located on one side of the frame 101; the second cylinder 120 is arranged on the second mounting plate 119 and is located on one side of the second mounting plate 119; the connecting frame 121 is connected to the output end of the second cylinder 120 and is fixedly connected to the intermediate warehouse 109, and is located on the side of the second cylinder 120 close to the intermediate warehouse 109. The second mounting plate 119 is bolted and fixedly installed on the frame 101, and the second cylinder 120 is arranged on the second mounting plate 119. The connecting frame 121 is connected to the output end of the second cylinder 120. The output is driven by the second cylinder 120 on the second mounting plate 119, so that the connecting frame 121 can be driven to move up and down. The connecting frame 121 is bolted and fixedly installed on the intermediate warehouse 109, so that the purpose of driving the intermediate warehouse 109 to move up and down is achieved through the lifting and moving of the connecting frame 121.

[0033] In addition, the pipe inlet bracket 122 is fixedly connected to the frame 101 and is located on one side of the frame 101; the medicine inlet pipe 123 is arranged on the pipe inlet bracket 122 and is located on the side of the pipe inlet bracket 122 close to the intermediate warehouse 109. The pipe inlet bracket 122 is fixedly installed on the frame 101 with bolts, and the medicine inlet pipe 123 is arranged on the pipe inlet bracket 122. Through the medicine inlet pipe 123, the medicine liquid can be introduced into the medicine tray filter 108 connected to the intermediate warehouse 109, thereby filtering the medicine liquid through the medicine tray filter 108.

[0034] Finally, the second limiting bracket 111 is fixedly connected to the frame 101 and connected to the movable top plate 106, and is located on the side of the frame 101 close to the movable top plate 106. There are two second limiting brackets 111, and the two second limiting brackets 111 are fixedly installed on the frame 101 with bolts. The movable top plate 106 is slidably connected to the corresponding two second limiting brackets 111. The second limiting brackets 111 can connect, support and directionally limit the movement of the movable top plate 106, thereby making the movement of the movable top plate 106 more stable.

[0035] When using a suspension filtration device of the present embodiment, during operation, an automatic guided vehicle (AGV) in a factory usually carries the medicine tray filter 108 to the bottom of the four hook claws 105, and the driving component drives the hook claws 105 connected to the bottom of the lifting plate 102 to move downward. At the same time, the gripping cylinder 110 connected to the rotating shaft drives the rotating shaft to rotate, so that the four hook claws 105 are opened or retracted to both sides, so that the medicine tray filter 108 carried by the automatic guided vehicle can be grabbed and moved upward to reset. The lifting plate 102 is then driven forward by the driving component, so that the lifting plate 102 moves to the bottom of the movable top plate 106 and the filter barrel 107. When the lifting plate 102 is driven downward to place the grabbed medicine tray filter 108 on the filter barrel 107, the moving component is started to drive the movable top plate 106 to move The medicine tray filter 108 and the filter barrel 107 are moved to the left end to be directly below the intermediate warehouse 109, and the driving component is started to drive the intermediate warehouse 109 to move downward and dock with the medicine tray filter 108 on the movable top plate 106, so that the intermediate warehouse 109 and the cavity inside the medicine tray filter 108 are connected, and the medicine feeding component can introduce the medicine liquid into the intermediate warehouse 109, so that the medicine liquid can pass through the intermediate warehouse 109 into the medicine tray filter 108 for filtration, and the filtered medicine liquid enters the filter barrel 107 and is discharged through the medicine outlet pipe, so that the medicine tray filter 108 grabbed by the movement of the hook 105 and the movable top plate 106 drive the movement and installation docking of the medicine tray filter 108, so that the entire device can automatically disassemble and replace the medicine tray filter 108, thereby reducing the manpower consumption when disassembling, replacing and cleaning the medicine tray filter 108, and improving production efficiency.

[0036] The above disclosure is merely one or more preferred embodiments of the present application and is not intended to limit the scope of the present application. A person skilled in the art will understand that all or part of the processes of the above embodiments and equivalent changes made in accordance with the claims of the present application are still within the scope of the present application.

Claims

1. A suspension filtration device, comprising a frame, characterized in that: Also includes filtering components, The filter assembly includes a lifting plate, a support frame, a rotating shaft, a hook, a movable top plate, a filter barrel, a medicine tray filter, an intermediate warehouse, a driving member, a movable member, a lifting member and a medicine feeding member, the lifting plate is connected to the frame through the driving member and is located on one side of the frame, the support frame is fixedly connected to the lifting plate and is located on one side of the lifting plate, the rotating shaft is rotatably connected to the support frame and is located on one side of the support frame, the hook is fixedly connected to the rotating shaft and is located on one side of the rotating shaft, the movable top plate is connected to the frame through the movable member, the filter barrel is connected to the movable top plate and is located on one side of the movable top plate, the medicine tray filter is arranged on the movable top plate and is located on one side of the movable top plate, the intermediate warehouse is connected to the frame through the lifting member, the driving member is arranged on the frame and connected to the lifting plate, the movable member is arranged on the frame and connected to the movable top plate, the lifting member is arranged on the frame and connected to the intermediate warehouse, and the medicine feeding member is arranged on the frame.

2. The suspension filtration device according to claim 1, wherein The driving component includes a first screw rod, a first movable seat and a first mounting plate. The first screw rod is arranged on the frame and is located on one side of the frame; the first movable seat is arranged on the first screw rod, and the first mounting plate is fixedly connected to the first movable seat and is located on one side of the first movable seat.

3. The suspension filtration device according to claim 2, characterized in that: The driving component further includes a first cylinder, which is disposed on the first mounting plate and connected to the lifting plate, and is located on a side of the first mounting plate close to the lifting plate.

4. The suspension filtration device according to claim 2, characterized in that: The driving component further includes a first limiting bracket, which is fixedly connected to the frame and the first mounting plate, and is located on a side of the frame close to the first mounting plate.

5. The suspension filtration device according to claim 1, characterized in that: The movable member includes a second screw rod and a second movable seat, the second screw rod is arranged on the frame and located on one side of the frame; the second movable seat is arranged on the second screw rod and is fixedly connected to the movable top plate, and is located on the side of the second screw rod close to the movable top plate.

6. The suspension filtration device according to claim 1, characterized in that: The lifting component includes a second mounting plate, a second cylinder and a connecting frame. The second mounting plate is fixedly connected to the frame and is located on one side of the frame; the second cylinder is arranged on the second mounting plate and is located on one side of the second mounting plate; the connecting frame is connected to the output end of the second cylinder and is fixedly connected to the intermediate warehouse, and is located on the side of the second cylinder close to the intermediate warehouse.

7. The suspension filtration device according to claim 1, characterized in that: The cleaning assembly further includes a second limiting bracket, which is fixedly connected to the frame and connected to the movable top plate, and is located on a side of the frame close to the movable top plate.