Battery recovery liquid filtering device

Abstract

The utility model provides a battery recovery liquid filtering device, and belongs to the technical field of battery recovery. Comprising a filter box, a first screen plate, a partition and a first filter membrane plate are sequentially arranged between the inner side walls of the filter box from top to bottom, and liquid discharging pipes arranged on the two sides of the partition are arranged on the side walls of the filter box; a stirring assembly arranged above the partition is arranged in the filter box; a communicated collecting box is arranged on the side wall of the filter box, a second screen plate, a partition plate and a second filter membrane plate are sequentially arranged between the inner side walls of the collecting box from top to bottom, and a suction pump is arranged on the side wall of the filter box. Under the combined action of the first screen plate, the partition, the stirring assembly, the first filter membrane plate and the like, electrolyte is sequentially subjected to layer-by-layer treatment of preliminary filtration, neutralization and fine filtration, a filter membrane is prevented from being corroded after long-time use, the normal service life is prevented from being affected, impurities and metal oxides can be conveniently cleaned and recycled by opening the cleaning door, and the service life is prolonged. And the electrolyte accumulated in the collecting box can flow back into the filter box through the suction pump, manual further separation is not needed, and the recycling and filtering effects are greatly improved.

Description

Technical Field

[0001] This invention provides a battery recycling fluid filtration device, belonging to the field of battery recycling technology. Background Technology

[0002] Battery recycling refers to the collection of used batteries to prevent them from entering the ecosystem and causing harm to the environment. Used batteries contain large amounts of heavy metals and electrolyte solutions such as waste acids and alkalis. Recycling used batteries requires crushing equipment to pulverize them, followed by filtration to remove impurities from the battery electrolyte.

[0003] Existing filtration devices can generally meet the needs of normal battery recovery fluid filtration, but they still have certain shortcomings: During filtration, multiple layers of filters are typically used, from pre-filtration (removing large particulate impurities) to precision filtration (membrane separation of small metal oxide particles). While this meets normal usage requirements, the corrosive nature of acidic / alkaline electrolytes can cause membrane corrosion and damage after prolonged use, reducing their lifespan. Furthermore, large impurities and residual electrolyte in the small metal oxide particles retained at the top of the filter screen still require further manual separation, thus the filtration efficiency needs improvement. Therefore, this invention provides a battery recovery fluid filtration device. Utility Model Content

[0004] The technical problem solved by this utility model is that after long-term use, corrosive electrolyte will cause corrosion and damage to the filter membrane, reducing its normal service life. The filtered impurities and residual electrolyte in the metal oxides still need to be further separated manually, and the recycling filtration effect needs to be improved.

[0005] To solve the technical problem, the technical solution provided by this utility model is as follows: a battery recycling fluid filtration device, including a filter box, wherein a screen plate, a partition, and a filter membrane plate are arranged in an inclined manner from top to bottom between the inner side walls of the filter box, and a liquid drain pipe is provided on the side wall of the filter box, which is placed on both sides of the partition and between the screen plate and the filter membrane plate.

[0006] The filter box is equipped with a stirring assembly placed above the partition for stirring the electrolyte;

[0007] The filter box has a connected collection box on its side wall. The inner side wall of the collection box is provided with a screen plate, a partition, and a filter membrane plate in sequence from top to bottom. The filter box has a pump on its side wall for extracting the electrolyte accumulated in the collection box.

[0008] Furthermore, the filter box has an inlet on the side near the upper end of the screen plate, and an outlet on the bottom wall of one side of the filter box located below the filter membrane plate. The filter box and the collection box have interconnected outlets on their adjacent side walls, located at the top of the lower end of the screen plate and the filter membrane plate.

[0009] Furthermore, one side wall of the filter box is provided with a pH adjuster addition port placed between the screen plate and the partition. The stirring assembly includes a motor fixedly installed on the outer side wall of the filter box. The output end of the motor is inserted into the filter box and fixedly connected to a stirring rod. The other end of the stirring rod is rotatably connected to the other side wall of the filter box. Several stirring blades are equidistantly arranged on the stirring rod.

[0010] Furthermore, the first filter membrane plate is located above the second filter membrane plate, the first screen plate is located above the second screen plate, the partition is placed between the outlets, the first screen plate and the partition are inclined in opposite directions, and the first screen plate and the first filter membrane plate are inclined in the same direction.

[0011] Furthermore, both the first and second screen plates are made of stainless steel with a pore size of 50-100μm. Both the first and second filter membrane plates include a frame and a filter membrane disposed between the inner sidewalls of the frame. The filter membrane is either a ceramic membrane or a polyvinylidene fluoride membrane with a pore size of 0.1-1μm.

[0012] Furthermore, the output end of the pump is provided with a liquid outlet pipe inserted into the filter box and placed between the screen plate and the partition, and the input end of the pump is provided with a liquid extraction pipe 1 inserted into the collection box and placed below the filter membrane plate 2. The liquid extraction pipe 1 is provided with a liquid extraction pipe 2 inserted into the collection box and placed between the screen plate and the partition. Both the liquid extraction pipe 1 and the liquid extraction pipe 2 are provided with a switch valve.

[0013] Furthermore, the collection box has a rotatable cleaning door located on both sides of the partition.

[0014] The beneficial effects of this utility model are:

[0015] With the combined action of screen plate one, baffles, stirring components, and filter membrane plate one, the electrolyte undergoes preliminary filtration, neutralization, and fine filtration in sequence, effectively preventing corrosion of the filter membrane after prolonged use and thus avoiding affecting its normal service life. Large impurities remain at the top of screen plate two, while small metal oxide particles remain at filter membrane plate two. Cleaning and recycling can be easily carried out by opening the cleaning door. The electrolyte accumulated at the top of the baffle and the bottom of the collection tank can be returned to the filter box by a pump, avoiding waste of electrolyte. No further manual separation is required, and the recycling and filtration effect is greatly improved. Attached Figure Description

[0016] Figure 1This is a schematic diagram of the structure of a battery recovery fluid filtration device according to the present invention. Figure 1 .

[0017] Figure 2 This is a schematic diagram of the structure of a battery recovery fluid filtration device according to the present invention. Figure 2 .

[0018] Figure 3 This is a schematic diagram of the structure of a battery recovery fluid filtration device according to the present invention. Figure 3 .

[0019] Figure 4 This is a plan view of a battery recycling fluid filtration device according to the present invention.

[0020] 1. Filter box; 2. Screen plate one; 3. Baffle; 4. Filter membrane plate one; 5. Liquid outlet pipe; 6. Stirring assembly; 7. Screen plate two;

[0021] 8. Partition plate; 9. Filter membrane plate II; 10. Pump; 11. Inlet; 12. Outlet; 13. Discharge port; 14. pH adjuster addition port; 15. Motor; 16. Stirring rod; 17. Stirring blade; 18. Liquid outlet pipe; 19. Liquid extraction pipe I; 20. Liquid extraction pipe II; 21. Cleaning door; 22. Collection box. Detailed Implementation

[0022] The directional terms such as up, down, left, right, front, back, front, back, top, and bottom mentioned or possibly mentioned in this specification are defined relative to their structure and are relative concepts. Therefore, they may vary depending on their location and usage; thus, these or other directional terms should not be interpreted as restrictive terms.

[0023] The singular forms “a,” “the,” and “the” used in this specification are intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes one or more of the associated listed items, any or all possible combinations thereof.

[0024] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0025] According to the appendix Figure 1 , 4As shown: This utility model provides a battery recycling fluid filtration device, including a filter box 1. From top to bottom, the inner wall of the filter box 1 is provided with an inclined screen plate 2, a partition 3, and a filter membrane plate 4. A drain pipe 5 is provided on the side wall of the filter box 1, positioned on both sides of the partition 3 and between the screen plate 2 and the filter membrane plate 4. A control valve is provided on the drain pipe 5. The inclination direction of the screen plate 2 is opposite to that of the partition 3, while the inclination direction of the screen plate 2 and the filter membrane plate 4 is the same. Both the screen plate 2 and the screen 3 are made of stainless steel with a pore size of 50-100μm, filtering large-volume impurities. Both the filter membrane plate 4 and the filter membrane plate 5 include a frame and are arranged on the inner wall of the frame. The filter membrane is made of either ceramic or polyvinylidene fluoride, with a pore size of 0.1-1μm, to filter small metal oxide particles. The filter box 1 has an inlet 11 on the top side near the upper end of the screen plate 2, and an outlet 12 on the bottom wall of one side of the filter box 1, located below the filter membrane plate 4. Specifically, the electrolyte first passes through the screen plate 2 to filter out large impurities such as electrode fragments and plastic particles. After opening the control valve, the electrolyte that has been initially filtered to remove large impurities flows through the lower liquid pipe 5 into the spacer 3. It then passes through the filter membrane plate 4 to filter out small metal oxide particles, and finally the electrolyte with solid impurities removed is discharged from the outlet 12.

[0026] As per the instruction manual Figure 2 , 4 As shown: A collection box 22 is connected to the side wall of the filter box 1. Both the filter box 1 and the collection box 22 have interconnected outlets 13 on their adjacent side walls, positioned at the top of the lower end of the screen plate 2 and the filter membrane plate 4. From top to bottom, the inner side walls of the collection box 22 are arranged a second screen plate 7, a partition plate 8, and a second filter membrane plate 9. The first filter membrane plate 4 is located above the second filter membrane plate 9, the first screen plate 2 is located above the second screen plate 7, and the partition plate 8 is positioned between the outlets 13. A cleaning filter is rotatably connected to the opening of the collection box 22, with cleaning filters placed on both sides of the partition plate 8. Specifically, through the cleaning door 21, large impurities fall along the screen plate 12 through the outlet 13 into the collection box 22 and remain on the top of the screen plate 27. Residual electrolyte flows down through the screen plate 27 and accumulates on the top of the partition plate 8. Small metal oxide particles fall along the filter membrane plate 29 through the outlet 13 into the collection box 22 and remain on the filter membrane plate 29. Residual electrolyte accumulates at the bottom of the collection box 22. Opening the cleaning door 21 allows for easy cleaning and recovery of the impurities and fine metal oxide particles accumulated in the collection box 22.

[0027] As per the instruction manual Figure 4As shown: A pH adjuster addition port 14 is provided on one side wall of the filter box 1, which is placed between the screen plate 2 and the partition 3. A stirring assembly 6 is provided in the filter box 1, which is placed above the partition 3, for stirring the electrolyte. The stirring assembly 6 includes a motor 15 fixedly installed on the outer side wall of the filter box 1. The output end of the motor 15 is inserted into the filter box 1 and fixedly connected to a stirring rod 16. The other end of the stirring rod 16 is rotatably connected to the other side wall of the filter box 1. Several stirring blades 17 are evenly arranged on the stirring rod 16. Specifically, the pH adjuster is added into the filter box 1 through the pH adjuster addition port 14. The motor 15 is started to drive the stirring rod 16 to rotate, which in turn drives the stirring blades 17 to rotate around the stirring rod 16, thereby increasing the neutralization rate.

[0028] As per the instruction manual Figure 3 , 4 As shown: A pump 10 is provided on the side wall of the filter box 1 for extracting the electrolyte accumulated in the collection box 22. The output end of the pump 10 is provided with a liquid outlet pipe 18 inserted into the filter box 1 and placed between the screen plate 2 and the partition 3. The input end of the pump 10 is provided with a liquid extraction pipe 19 inserted into the collection box 22 and placed below the filter membrane plate 9. A liquid extraction pipe 20 is provided on the liquid extraction pipe 19 inserted into the collection box 22 and placed between the screen plate 7 and the partition 8. Both the liquid extraction pipe 19 and the liquid extraction pipe 20 are provided with switch valves. Specifically, when the pump 10 is started, the electrolyte accumulated at the top of the partition 8 and the bottom of the collection box 22 flows back into the filter box 1 through the liquid extraction pipe 20, the liquid extraction pipe 19, the pump 10, and the liquid outlet pipe 18.

[0029] The principle of this utility model

[0030] In use, the recycled battery electrolyte is added to the filter box 1 through the feed inlet 11. First, it passes through the screen plate 2 to filter out large impurities such as electrode fragments and plastic particles. The electrolyte remains at the top of the partition 3. For acidic and alkaline battery electrolytes, a pH adjuster is added. The neutralization rate is increased by activating the stirring component 6. Then, the control valve is opened, and the electrolyte, having initially filtered out large impurities, flows through the drain pipe 5 to the bottom of the partition 3. It then passes through the filter membrane plate 4 to filter out small particles such as metal oxides, ultimately removing solid impurities. The electrolyte is discharged from the outlet 12. After preliminary filtration, neutralization and fine filtration, the electrolyte is effectively treated to prevent corrosion of the filter membrane after long-term use, so as not to affect the normal service life. Large impurities are retained on the top of the screen plate 7, and small metal oxide particles are retained on the filter membrane plate 9. The cleaning door 21 can be opened for easy cleaning and recycling. In addition, the electrolyte accumulated on the top of the partition plate 8 and the bottom of the collection box 22 can be returned to the filter box 1 by the pump 10, avoiding the waste of electrolyte. No further manual separation is required, and the recycling and filtration effect is greatly improved.

[0031] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A battery recycling liquid filtering device comprising a filter box (1), characterized in that: The filter box (1) is provided with a screen plate (2), a partition (3) and a filter membrane plate (4) arranged in an inclined manner from top to bottom between the inner side walls. The filter box (1) is provided with a liquid drain pipe (5) placed on both sides of the partition (3) and between the screen plate (2) and the filter membrane plate (4). The filter box (1) is equipped with a stirring assembly (6) placed above the partition (3) for stirring the electrolyte; The filter box (1) has a connected collection box (22) on its side wall. The inner side wall of the collection box (22) is provided with a screen plate (7), a partition plate (8), and a filter membrane plate (9) from top to bottom. The filter box (1) has a pump (10) on its side wall for extracting the electrolyte accumulated in the collection box (22).

2. The battery recycling liquid filtration device of claim 1, wherein: The filter box (1) has an inlet (11) on the side near the upper end of the screen plate (2). The bottom wall of the filter box (1) has an outlet (12) located below the filter membrane plate (4). The filter box (1) and the collection box (22) have outlets (13) that are connected to each other and located at the top of the lower end of the screen plate (2) and the filter membrane plate (4).

3. The battery recycling liquid filtration device of claim 1, wherein: The filter box (1) has a pH adjustment agent addition port (14) located between the screen plate (2) and the partition (3) on one side wall. The stirring assembly (6) includes a motor (15) fixedly installed on the outer side wall of the filter box (1). The output end of the motor (15) is inserted into the filter box (1) and fixedly connected to a stirring rod (16). The other end of the stirring rod (16) is rotatably connected to the other side wall of the filter box (1). Several stirring blades (17) are equidistantly arranged on the stirring rod (16).

4. The battery recovery fluid filtration device according to claim 2, characterized in that: The first filter plate (4) is located above the second filter plate (9), the first screen plate (2) is located above the second screen plate (7), the partition (8) is placed between the outlets (13), the first screen plate (2) and the partition (3) are inclined in opposite directions, and the first screen plate (2) and the first filter plate (4) are inclined in the same direction.

5. The battery recycling liquid filtration device of claim 1, wherein: The first screen plate (2) and the second screen plate (7) are both made of stainless steel with a pore size of 50-100μm. The first filter plate (4) and the second filter plate (9) each include a frame and a filter membrane disposed between the inner sidewalls of the frame. The filter membrane is either a ceramic membrane or a polyvinylidene fluoride membrane with a pore size of 0.1-1μm.

6. The battery recycling liquid filtration device of claim 1, wherein: The pump (10) has an outlet pipe (18) inserted into the filter box (1) and placed between the screen plate (2) and the partition (3). The pump (10) has an input pipe (19) inserted into the collection box (22) and placed below the filter membrane plate (9). The pump (19) has a second pump pipe (20) inserted into the collection box (22) and placed between the screen plate (7) and the partition (8). Both the pump (19) and the second pump pipe (20) are equipped with a switch valve.

7. The battery recycling liquid filtration device of claim 1, wherein: The collection box (22) is rotatably connected to a cleaning door (21) located on both sides of the partition (8).

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