Lithium battery slurry filtering device

Abstract

The utility model discloses a lithium battery slurry filtering device. The lithium battery slurry filtering device comprises a fixed frame, a first tank body, a second tank body, a liquid inlet assembly and a back flushing mechanism, and the first tank body and the second tank body are fixed in the fixed frame. And filter element assemblies are arranged in the first tank body and the second tank body and are used for filtering lithium battery slurry. The liquid inlet assembly comprises a three-way feeding connecting pipe, a first valve and a second valve. And the three-way feeding connecting pipe is respectively communicated with the first tank body, the second tank body and the feeding end. The first valve is arranged at the joint of the three-way feeding connecting pipe and the first tank body, and the second valve is arranged at the joint of the three-way feeding connecting pipe and the second tank body. And the backflushing mechanism is communicated with the first tank body and the second tank body respectively. One filtering tank is in the filtering process of lithium battery slurry, the other filtering tank is in the backwashing process of the filter element, and the filtering tank and the filtering tank work alternately, so that the filtering of the lithium battery filter element can be efficiently and smoothly realized without stopping the machine, the filter element does not need to be regularly and frequently replaced, and the operation is more labor-saving and convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery production, in particular to a lithium battery slurry filtering device. Background Art

[0002] Lithium battery slurry is a slurry formed by uniformly dispersing a conductive agent in a dispersant, including conductive carbon black, conductive graphite, carbon nanotubes, graphene and mixed slurries, etc. In order to improve the quality of the slurry, a filtering device is used before processing lithium batteries to filter out and intercept particulate impurities in the slurry.

[0003] In the prior art, the common lithium battery slurry filtering device is mainly a filter tank, in which a filter element is installed, and the lithium battery slurry is filtered through the filter element's interception and filtration. However, after filtering for a period of time, many particles will adhere to the surface of the filter element, affecting the smoothness of the filtration. It is necessary to stop the machine and replace the filter element before continuing the filtration. However, the replacement and maintenance of the filter element takes a long time, which affects the processing efficiency of the lithium battery. Utility Model Content

[0004] In order to overcome the above shortcomings, the purpose of the utility model is to provide a lithium battery slurry filtering device to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is a lithium battery slurry filtering device, comprising:

[0006] The fixed frame extends along a first direction.

[0007] The first tank body and the second tank body are fixed in the fixed frame. The first tank body and the second tank body both extend along the first direction and are spaced apart along the second direction, and the first direction is perpendicular to the second direction. A filter element assembly is provided inside the first tank body and the second tank body for filtering lithium battery slurry.

[0008] The liquid inlet assembly includes a three-way feed pipe, a first valve and a second valve. The three-way feed pipe is connected to the first tank body, the second tank body and the feed end respectively. The first valve is arranged at the connection between the three-way feed pipe and the first tank body, and the second valve is arranged at the connection between the three-way feed pipe and the second tank body, so that only one of the first tank body and the second tank body receives lithium battery slurry.

[0009] The backflushing mechanism is connected to the first tank body and the second tank body respectively, and is used to flush the filter element assembly located in the second tank body or the first tank body when the first tank body or the second tank body is filtering.

[0010] The lithium battery slurry filtering device provided by the utility model is directly connected to the external lithium battery slurry conveying pipeline through a three-way feed pipe, the first valve is opened, the second valve is closed, the slurry to be filtered will enter the first tank body, and be filtered through the filter element assembly, and the backwash mechanism backwashes the second tank body at the same time, and then waits until the first valve is closed and the second valve is opened, the first tank body is backwashed, and the second tank body is filtered, one filter tank is in the filtering process of the lithium battery slurry, and the other is in the filter element backwashing process, such a double tank alternating filtering method makes the filtering process of the lithium battery slurry filtering device smooth and stable, and there is no need to frequently replace the filter element, thereby improving the processing efficiency.

[0011] In some embodiments, the filter element assembly includes a filter element frame, a filter element barrel, a recovery pipe and a third valve. The filter element barrel extends along the first direction. The filter element frame extends along the first direction, is arranged through the filter element barrel, and is fixed to the inner wall of the first tank body at both ends. The recovery pipe extends along the first direction, is arranged through the bottom of the first tank body. The top of the recovery pipe is connected to the filter element barrel, and the third valve is arranged in the middle.

[0012] By adopting the above technical solution, the slurry to be filtered flows into the first tank body or the second tank body through the three-way feed pipe, the impurities therein are intercepted by the filter cartridge, and the filtrate passes through the filter cartridge and continues to flow downward through the recovery pipe for centralized collection.

[0013] In some embodiments, the fixed frame includes a top plate, a fixed plate, a bottom plate, and a plurality of connecting rods. The top plate, the fixed plate, and the bottom plate all extend along the first direction and are sequentially arranged in parallel along the second direction. The first tank body and the second tank body are supported on the top of the fixed plate. Each of the connecting rods extends along the first direction and is used to fix the top plate, the fixed plate, and the bottom plate.

[0014] In some embodiments, the lithium battery slurry filtering device further comprises a slurry storage tank. The slurry storage tank is supported on the top of the bottom plate. The top of the slurry storage tank is connected to the bottom of the recovery pipe. A slurry discharge pipe is provided on one side of the slurry storage tank along the third direction, and the first direction, the second direction and the third direction are perpendicular to each other. A slurry discharge valve is fixedly installed on the slurry discharge pipe.

[0015] With the above technical solution, the slurry storage tank is arranged below the first tank body and the second tank body, and the filtrate flows into the slurry storage tank through the recovery pipe for unified collection, and then flows to the next process through the slurry discharge pipeline. The closing or opening of the slurry discharge channel is controlled by the slurry discharge valve.

[0016] In some embodiments, the backwash mechanism includes a flushing liquid storage tank, a lifting pump, a lifting pipe, a first backwash pipe and a second backwash pipe. The flushing liquid storage tank is arranged on one side of the slurry storage tank along the second direction and is supported by the bottom plate. The lifting pump is arranged on the top of the flushing liquid storage tank. One end of the lifting pipe is connected to the water outlet of the lifting pump, and the other end is connected to the first backwash pipe and the second backwash pipe respectively.

[0017] The first backwash pipe extends along the first direction, penetrates the top of the first tank, and the bottom ends extend to the inside of the filter cartridge. The second backwash pipe extends along the first direction, penetrates the top of the second tank, and the bottom ends extend to the inside of the filter cartridge. A fourth valve is provided at the top of the first backwash pipe, and a fifth valve is provided at the top of the second backwash pipe. The surfaces of the first backwash pipe and the second backwash pipe are both provided with evenly distributed flushing spray holes.

[0018] The above technical solution is adopted, for example, the first tank body is in a filtering state, and the second tank body is in a backwashing state. During the backwashing stage, the lifting pump works to fill the flushing water in the flushing liquid storage tank into the lifting pipe, and the fifth flushing water generator on the corresponding second tank body is opened, and the flushing water enters the backwashing pipe and is sprayed out from the flushing spray hole to flush from the inside of the filter element.

[0019] In some embodiments, the lithium battery slurry filtering device further includes a waste liquid collection mechanism. The waste liquid collection mechanism includes a waste storage tank, a first sewage pipe, a second sewage pipe, a return pipe, a sixth valve, and a seventh valve. The waste storage tank is arranged on the other side of the slurry storage tank along the second direction. The first sewage pipe is arranged on the first tank body. The second sewage pipe is arranged on the second tank body. One end of the return pipe is connected to the waste storage tank. The other end is connected to the first sewage pipe and the second sewage pipe respectively. The sixth valve is arranged on the first sewage pipe. The seventh valve is arranged on the second sewage pipe.

[0020] With the above technical solution, when the tank is in the backwash state, the corresponding fourth valve or fifth valve will be opened, and the impurities will enter the return pipe through the first sewage pipe or the second sewage pipe under the impact of the flushing water, and finally enter the waste storage tank for unified collection. The sixth valve and the seventh valve are only opened when the tank is backwashed to ensure the airtightness of the tank during filtration.

[0021] In some implementations, the first valve, the second valve, the third valve, the fourth valve, the fifth valve, the sixth valve, and the seventh valve are all electromagnetic valves.

[0022] By adopting the above technical solution, the operation of the solenoid valve is simple. The flow and pressure of the fluid can be controlled by controlling the change of the electrical signal. No complicated mechanical operation is required, which can save a lot of labor and time.

[0023] In some embodiments, the top of the first tank body and the second tank body are both provided with a detachable sealed tank cover for opening or closing the first tank body or the second tank body. The first backwash pipe and the second backwash pipe are both passed through the sealed tank cover. The filter element holder is arranged close to the sealed tank cover.

[0024] By adopting the above technical solution, a sealed tank cover is arranged on the top of the tank body, which makes it convenient for staff to maintain and replace the interior of the tank body and the filter element assembly.

[0025] In some embodiments, the lithium battery slurry filtering device further includes a controller. The controller is disposed on the top of the top plate. The controller includes a control panel. The control panel includes a display and a power switch, and the display, the first valve, the second valve, the third valve, the fourth valve, the fifth valve, the sixth valve, and the seventh valve are all electrically connected to the controller. The controller is electrically connected to an external power supply via the power switch.

[0026] By adopting the above technical solution, the multiple valves are controlled by the controller to switch the working states of the first tank body and the second tank body, and the states of the multiple valves are displayed on the display to facilitate inspection by the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A three-dimensional view of an embodiment of a lithium battery slurry filtering device according to the utility model Figure 1 ;

[0028] Figure 2 This is a structural schematic diagram of an embodiment of a lithium battery slurry filtering device of the utility model;

[0029] Figure 3 This is a partial structural schematic diagram of an embodiment of a lithium battery slurry filtering device of the utility model;

[0030] Figure 4 It is a three-dimensional diagram of a second backwash pipe of an embodiment of a lithium battery slurry filtering device of the utility model, wherein the first backwash pipe has the same structure as the second backwash pipe;

[0031] In the figure:

[0032] 1-bottom plate; 2-second tank body; 3-sealed tank cover; 4-top plate; 5-controller; 6-operation panel; 7-three-way feed pipe; 8-first sewage pipe; 9-slurry storage tank; 17-slurry discharge pipe; 18-slurry discharge valve; 10-waste storage tank; 11-reflux pipe; 12-second sewage pipe; 13-seventh valve; 14-lifting pump; 15-lifting pipe; 16-flushing liquid storage tank; 19-recovery pipe; 20-third valve; 21-filter cartridge; 22-second backwash pipe; 23-flushing spray hole; 24-fifth valve; 25-filter cartridge frame; 26-second valve; 27-sixth valve; 28-first tank body; 29-fixing plate; 30-connecting rod; 31-first valve; 32-fourth valve. DETAILED DESCRIPTION

[0033] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0034] refer to Figure 1~Figure 4 , Figure 1 A three-dimensional diagram of a lithium battery slurry filtering device provided by an embodiment of the utility model is shown; Figure 2 A schematic structural diagram of a lithium battery slurry filtering device provided by an embodiment of the utility model is shown; Figure 3 A partial structural schematic diagram of a lithium battery slurry filtering device provided by an embodiment of the utility model is shown; Figure 4 A stereoscopic view of a second backwash pipe 22 in a lithium battery slurry filtering device provided in an embodiment of the utility model is shown, wherein the first backwash pipe has the same structure as the second backwash pipe.

[0035] like Figure 1~Figure 4 As shown, the technical solution adopted by the utility model is a lithium battery slurry filtering device, including a fixed frame, a first tank body 28, a second tank body 2, a liquid inlet assembly and a recoil mechanism, wherein the fixed frame is along a first direction ( Figure 1 The first tank body 28 and the second tank body 2 are both fixed in the fixed frame. The first tank body 28 and the second tank body 2 are both extended along the first direction and along the second direction ( Figure 1 The first tank body 28 and the second tank body 2 are both provided with filter element components for filtering lithium battery slurry.

[0036] The liquid inlet assembly includes a three-way feed pipe 7, a first valve 31 and a second valve 26. The three-way feed pipe 7 is connected to the first tank body 28, the second tank body 2 and the feed end respectively. The first valve 31 is arranged at the connection between the three-way feed pipe 7 and the first tank body 28, and the second valve 26 is arranged at the connection between the three-way feed pipe 7 and the second tank body 2, so that only one of the first tank body 28 and the second tank body 2 receives the lithium battery slurry. The recoil mechanism is connected to the first tank body 28 and the second tank body 2 respectively, and is used to flush the filter element assembly located in the second tank body 2 or the first tank body 28 when the first tank body 28 or the second tank body 2 is filtering.

[0037] The lithium battery slurry filtering device provided in the present application is directly connected to the external lithium battery slurry conveying pipeline through the three-way feed pipe 7. The first valve 31 is opened and the second valve 26 is closed. The slurry to be filtered will enter the first tank body 28 and be filtered through the filter element assembly. At the same time, the backwashing mechanism backwashes the second tank body 2 and then stands by until the first valve 31 is closed and the second valve 26 is opened. The first tank body 28 is backwashed and the second tank body 2 is filtered. One filter tank is in the filtering process of the lithium battery slurry and the other is in the filter element backwashing process. This double-tank alternating filtering method makes the filtering process of the lithium battery slurry filtering device smooth and stable, and there is no need to frequently replace the filter element, thereby improving the processing efficiency.

[0038] In some embodiments, reference Figure 1~Figure 4 The filter element assembly includes a filter element frame 25, a filter element barrel 21, a recovery pipe 19 and a third valve 20. The filter element barrel 21 extends along the first direction. The filter element frame 25 extends along the first direction, penetrates the filter element barrel 21, and is fixed to the inner wall of the first tank body 28 at both ends. The recovery pipe 19 extends along the first direction and penetrates the bottom of the first tank body 28. The top of the recovery pipe 19 is connected to the filter element barrel 21, and the third valve 20 is provided in the middle.

[0039] Illustratively, the slurry to be filtered flows into the first tank body 28 or the second tank body 2 through the three-way feed pipe 7, the impurities therein are intercepted by the filter cartridge 21, and the filtrate passes through the filter cartridge 21 and continues to flow downward through the recovery pipe 19 for centralized collection. The third valve 20 on the tank body will only be opened during the filtration stage. When the tank body is in backwash or standby state, the corresponding third valve 20 will be closed to ensure the airtightness of the tank body.

[0040] In some embodiments, reference Figure 1~Figure 4 The fixed frame includes a top plate 4, a fixed plate 29, a bottom plate 1 and a plurality of connecting rods 30. The top plate 4, the fixed plate 29 and the bottom plate 1 all extend in a first direction and are sequentially arranged in parallel in a second direction. The first tank body 28 and the second tank body 2 are supported on the top of the fixed plate 29. Each connecting rod 30 extends in the first direction and is used to fix the top plate 4, the fixed plate 29 and the bottom plate 1.

[0041] In some embodiments, reference Figure 1~Figure 4 The lithium battery slurry filtering device further includes a slurry storage tank 9. The slurry storage tank 9 is supported on the top of the bottom plate 1. The top of the slurry storage tank 9 is connected to the bottom of the recovery pipe 19. The slurry storage tank 9 is connected to the bottom of the recovery pipe 19 along the third direction ( Figure 1 A slurry discharge pipe 17 is provided on one side of the slurry discharge pipe 17, and the first direction, the second direction and the third direction are perpendicular to each other. A slurry discharge valve 18 is fixedly installed on the slurry discharge pipe 17.

[0042] Exemplarily, the slurry storage tank 9 is arranged below the first tank body 28 and the second tank body 2, and the filtrate flows into the slurry storage tank 9 through the recovery pipe 19 for unified collection, and then flows to the next process through the slurry discharge pipe 17. The closing or opening of the slurry discharge channel is controlled by the slurry discharge valve 18.

[0043] In some embodiments, reference Figure 1~Figure 4 The backwash mechanism includes a flushing liquid storage tank 16, a lifting pump 14, a lifting pipe 15, a first backwash pipe and a second backwash pipe 22. The flushing liquid storage tank 16 is arranged on one side of the slurry storage tank 9 along the second direction and is supported on the bottom plate 1. The lifting pump 14 is arranged on the top of the flushing liquid storage tank 16. One end of the lifting pipe 15 is connected to the water outlet of the lifting pump 14, and the other end is connected to the first backwash pipe and the second backwash pipe 22 respectively.

[0044] The first backwash pipe extends along the first direction, penetrates the top of the first tank 28, and the bottom ends extend to the inside of the filter cartridge 21. The second backwash pipe 22 extends along the first direction, penetrates the top of the second tank 2, and the bottom ends extend to the inside of the filter cartridge 21. A fourth valve 32 is provided at the top of the first backwash pipe, and a fifth valve 24 is provided at the top of the second backwash pipe 22. The surfaces of the first backwash pipe and the second backwash pipe 22 are both provided with flushing spray holes 23 evenly distributed.

[0045] Exemplarily, for example, the first tank body 28 is in a filtering state, and the second tank body 2 is in a backwashing state. In the backwashing stage, the lifting pump 14 works to fill the flushing water in the flushing liquid storage tank 16 into the lifting pipe 15, and the corresponding fifth flushing water valve on the second tank body 2 is opened, and the flushing water enters the backwashing pipe and is sprayed out from the flushing nozzle 23 to flush from the inside of the filter element barrel 21.

[0046] In some embodiments, reference Figure 1~Figure 4The lithium battery slurry filtering device also includes a waste liquid collection mechanism. The waste liquid collection mechanism includes a waste storage tank 10, a first sewage pipe 8, a second sewage pipe 12, a return pipe 11, a sixth valve 27 and a seventh valve 13. The waste storage tank 10 is arranged on the other side of the slurry storage tank 9 along the second direction. The first sewage pipe 8 is arranged on the first tank body 28. The second sewage pipe 12 is arranged on the second tank body 2. One end of the return pipe 11 is connected to the waste storage tank 10. The other end is respectively connected to the first sewage pipe 8 and the second sewage pipe 12. The sixth valve 27 is arranged on the first sewage pipe 8. The seventh valve 13 is arranged on the second sewage pipe 12.

[0047] For example, when the tank is in the backwash state, the corresponding fourth valve 32 or fifth valve 24 will be opened, and the impurities will enter the return pipe 11 through the first sewage pipe 8 or the second sewage pipe 12 under the impact of the flushing water, and finally enter the waste storage tank 10 for unified collection. The sixth valve 27 and the seventh valve 13 are only opened when the tank is backwashed to ensure the airtightness of the tank during filtration.

[0048] In some embodiments, the first valve 31 , the second valve 26 , the third valve 20 , the fourth valve 32 , the fifth valve 24 , the sixth valve 27 and the seventh valve 13 are all electromagnetic valves.

[0049] For example, the operation of the solenoid valve is simple. It only needs to control the change of the electrical signal to control the flow and pressure of the fluid. It does not require complex mechanical operations, which can save a lot of labor and time. Secondly, the solenoid valve can be remotely controlled. As long as there is a correct electrical signal, the switch of the solenoid valve can be controlled, which can greatly simplify the operation and improve work efficiency. In addition, the solenoid valve has a fast response speed. Because it is controlled according to the electrical signal, the state of the solenoid valve can be changed immediately as long as the electrical signal is changed, which can better meet the requirements of industrial control.

[0050] In some embodiments, reference Figure 1~Figure 4 The tops of the first tank body 28 and the second tank body 2 are both provided with a detachable sealed tank cover 3 for opening or closing the first tank body 28 or the second tank body 2. The first backwash pipe and the second backwash pipe 22 are both penetrated through the sealed tank cover 3. The filter element frame 25 is arranged close to the sealed tank cover 3.

[0051] Exemplarily, by providing a sealed tank cover 3 on the top of the tank body, it is convenient for the staff to maintain and replace the interior of the tank body and the filter element assembly.

[0052] In some embodiments, reference Figure 1~Figure 4The lithium battery slurry filtering device further includes a controller 5. The controller 5 is disposed on the top of the top plate 4. The controller 5 includes a control panel 6. The control panel 6 includes a display and a power switch, and the display, the first valve 31, the second valve 26, the third valve 20, the fourth valve 32, the fifth valve 24, the sixth valve 27 and the seventh valve 13 are all electrically connected to the controller 5. The controller 5 is electrically connected to the external power supply through the power switch.

[0053] Exemplarily, the controller 5 is used to control the multiple valves, switch the working states of the first tank body 28 and the second tank body 2, and display the states of the multiple valves through a display to facilitate inspection by staff.

[0054] Specifically, the working process of the lithium battery slurry filtering device provided in this application is as follows:

[0055] The three-way feed pipe 7 is directly connected to the lithium battery slurry conveying pipeline. At the same time, the second valve 26 is closed, the first valve 31 is opened, the third valve 20 in the first tank body 28 is closed, the third valve 20 in the second tank body 2 is opened, the fourth valve 32 is closed, the fifth valve 24 is opened, the sixth valve 27 is closed, and the seventh valve 13 is opened (at this time, the first tank body 28 is filtered and the second tank body 2 is flushed). The slurry to be filtered enters the first tank body 28, and after being filtered by the filter cartridge 21, the filtered slurry is discharged into the slurry storage tank 9 for unified collection, and the filter residue is left outside the filter cartridge 21, and then enters the backwash state. When in the backwash state, the second valve 26 is opened and closed, the first valve 31 is closed and opened, the third valve 20 in the first tank body 28 is opened, the third valve 20 in the second tank body 2 is closed, the fourth valve 32 is opened, the fifth valve 24 is closed, the sixth valve 27 is opened, and the seventh valve 13 is closed (at this time the first tank body 28 is flushed and the second tank body 2 is filtered). The lifting pump 14 works to fill the flushing water in the flushing liquid storage tank 16 into the lifting pipe 15, the flushing water enters the first backwash pipe, and the flushing spray hole 23 is sprayed out to flush the inside of the filter element 21. The impurities flushed down will enter the first sewage pipe 8 and finally enter the waste storage tank 10.

[0056] The above implementation modes are only for illustrating the technical concept and features of the utility model, and their purpose is to allow people familiar with this technology to understand the content of the utility model and implement it. It cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A lithium battery slurry filtering device, characterized in that: include: A fixed frame extending along a first direction; The first tank body and the second tank body are fixed in the fixed frame; the first tank body and the second tank body both extend along the first direction and are spaced apart along the second direction, and the first direction is perpendicular to the second direction; a filter element assembly is provided inside the first tank body and the second tank body for filtering lithium battery slurry; A liquid inlet assembly, comprising a three-way feed pipe, a first valve and a second valve; the three-way feed pipe is respectively connected with the first tank body, the second tank body and the feed end; the first valve is arranged at the connection between the three-way feed pipe and the first tank body, and the second valve is arranged at the connection between the three-way feed pipe and the second tank body, so that only one of the first tank body and the second tank body receives lithium battery slurry; The backflushing mechanism is connected to the first tank body and the second tank body respectively, and is used to flush the filter element assembly located in the second tank body or the first tank body when the first tank body or the second tank body is filtering.

2. The lithium battery slurry filtering device according to claim 1, characterized in that: The filter element assembly includes a filter element frame, a filter element barrel, a recovery pipe and a third valve; the filter element barrel extends along the first direction; the filter element frame extends along the first direction, penetrates the filter element barrel, and has two ends fixed to the inner wall of the first tank body; the recovery pipe extends along the first direction, penetrates the bottom of the first tank body; the top of the recovery pipe is connected to the filter element barrel, and the third valve is provided in the middle.

3. The lithium battery slurry filtering device according to claim 2, characterized in that: The fixed frame includes a top plate, a fixed plate, a bottom plate and a plurality of connecting rods; the top plate, the fixed plate and the bottom plate all extend along the first direction and are arranged in parallel in sequence along the second direction; the first tank body and the second tank body are supported on the top of the fixed plate; each of the connecting rods extends along the first direction and is used to fix the top plate, the fixed plate and the bottom plate.

4. The lithium battery slurry filtering device according to claim 3, characterized in that: It also includes a slurry storage tank; the slurry storage tank is supported on the top of the base plate; the top of the slurry storage tank is connected to the bottom of the recovery pipe; the slurry storage tank is provided with a slurry discharge pipe on one side along the third direction, and the first direction, the second direction and the third direction are perpendicular to each other; the slurry discharge pipe is fixedly installed with a slurry discharge valve.

5. The lithium battery slurry filtering device according to claim 4, characterized in that: The backwash mechanism includes a flushing liquid storage tank, a lifting pump, a lifting pipe, a first backwash pipe and a second backwash pipe; the flushing liquid storage tank is arranged on one side of the slurry storage tank along the second direction and is supported by the bottom plate; the lifting pump is arranged on the top of the flushing liquid storage tank; one end of the lifting pipe is connected to the water outlet of the lifting pump, and the other end is connected to the first backwash pipe and the second backwash pipe respectively.

6. The lithium battery slurry filtering device according to claim 5, characterized in that: The first backwash pipe extends along the first direction, passes through the top of the first tank body, and the bottom end extends to the interior of the filter cartridge; the second backwash pipe extends along the first direction, passes through the top of the second tank body, and the bottom end extends to the interior of the filter cartridge; a fourth valve is provided at the top of the first backwash pipe, and a fifth valve is provided at the top of the second backwash pipe, and the surfaces of the first backwash pipe and the second backwash pipe are both provided with evenly distributed flushing spray holes.

7. The lithium battery slurry filtering device according to claim 4, characterized in that: It also includes a waste liquid collection mechanism; the waste liquid collection mechanism includes a waste storage tank, a first sewage pipe, a second sewage pipe, a return pipe, a sixth valve and a seventh valve; the waste storage tank is arranged on the other side of the slurry storage tank along the second direction; the first sewage pipe is arranged on the first tank body; the second sewage pipe is arranged on the second tank body; one end of the return pipe is connected to the waste storage tank; the other end is connected to the first sewage pipe and the second sewage pipe respectively; the sixth valve is arranged on the first sewage pipe; the seventh valve is arranged on the second sewage pipe.

8. The lithium battery slurry filtering device according to claim 7, characterized in that: The first valve, the second valve, the third valve, the fourth valve, the fifth valve, the sixth valve and the seventh valve are all electromagnetic valves.

9. The lithium battery slurry filtering device according to claim 5, characterized in that: The tops of the first tank body and the second tank body are both provided with detachable sealed tank covers for opening or closing the first tank body or the second tank body; the first backwash pipe and the second backwash pipe are both passed through the sealed tank covers; the filter element holder is arranged close to the sealed tank covers.

10. The lithium battery slurry filtering device according to claim 8, characterized in that: It also includes a controller; the controller is arranged on the top of the top plate; the controller includes an operation panel; the operation panel includes a display and a power switch, the display, the first valve, the second valve, the third valve, the fourth valve, the fifth valve, the sixth valve and the seventh valve are all electrically connected to the controller; the controller is electrically connected to an external power supply through the power switch.

Images