Filtering device for lithium liquid extraction
The anti-clogging component, which combines a flow guide baffle and a cleaning brush, solves the problem of clogging in the resin trap filter cartridge, achieving efficient filtration of lithium bicarbonate mother liquor and improving the operational stability and efficiency of the filtration device.
Patent Information
- Application Number
- CN202511328133.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-17
- Publication Date
- 2025-10-31
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
In traditional resin traps, the filter cartridge inside is impacted by lithium bicarbonate mother liquor on one side, resulting in uneven resin capture, which easily leads to clogging and affects filtration efficiency.
The anti-clogging component, which combines a flow guide baffle and a cleaning brush, guides the flow of lithium bicarbonate mother liquor through the flow guide baffle and cleans the surface of the filter cartridge with the cleaning brush. Combined with the rotation of the filter cartridge and the backwashing component, it prevents clogging and improves the cleaning effect.
It effectively avoids filter cartridge clogging, improves filtration efficiency and resin trap capture effect, and ensures the smoothness and cleanliness of the filtration device.
Smart Images
Figure CN120860664A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of lithium liquid extraction technology, and in particular to a filtration device for lithium liquid extraction. Background Technology
[0002] When recycling batteries, it is necessary to extract the lithium liquid from the batteries. Common lithium liquid extraction processes mainly include defluorination, removal of heavy metals and softening treatment of lithium bicarbonate mother liquor. The defluoridation and heavy metal removal processes, based on the client's incoming water quality and requirements for the final product water quality, employ a main process of heavy metal ion removal resin + defluoridation resin. One exchanger is in operation and one is on standby. Ultimately, fluoride ions are reduced to below 1 ppm, and nickel, cobalt, calcium, and magnesium ions are reduced to below 1 ppm. The softening treatment utilizes a cation exchange bed, which removes scale-forming ions such as calcium and magnesium from the water using the principle of ion exchange. When raw water containing hardness ions passes through the resin layer in the exchanger, the calcium and magnesium ions in the water are replaced by sodium ions adsorbed by the resin. The resin adsorbs the calcium and magnesium ions, while the sodium ions enter the water. Thus, the water flowing out of the exchanger is softened water with its hardness removed. Whether it's defluorination, heavy metal removal, or softening treatment, resin is needed as a filler. However, resin is prone to expansion during backwashing, which can lead to some resin leakage and contamination of the treated lithium bicarbonate mother liquor. Therefore, a resin trap needs to be installed at the end of the defluorination, heavy metal removal, and softening treatment equipment to trap the leaked resin and achieve the effect of filtering the lithium bicarbonate mother liquor after extraction. However, in actual use, after the lithium bicarbonate mother liquor enters the resin trap, it will continuously impact one side of the filter cartridge inside the resin trap, causing the filter cartridge to capture the resin contained in the lithium bicarbonate mother liquor unevenly. This makes the area that is constantly impacted by the lithium bicarbonate mother liquor prone to blockage, thereby affecting the interception and capture efficiency of the resin trap. Summary of the Invention
[0003] The purpose of this invention is to solve the problem that the filter cartridge inside a traditional resin trap is constantly impacted by the incoming lithium bicarbonate mother liquor, leading to uneven resin capture and easy clogging of the filter cartridge. Therefore, a filtration device for lithium liquid extraction is proposed.
[0004] To achieve the above objectives, the present invention adopts the following technical solution: A filtration device for lithium liquid extraction includes a tank and a tank cover movably connected to the top of the tank. The top of the tank cover and the left side of the tank are respectively fixedly connected to a discharge pipe and a feed pipe. The tank is equipped with a filter cartridge inside and also includes an anti-clogging component disposed inside the tank to reduce the probability of filter cartridge clogging. The anti-clogging component includes a flow guide baffle located on the inner left side of the tank corresponding to the feed pipe position. A spring is fixedly connected between the flow guide baffle and the side wall of the tank. A cleaning arm is fixedly connected to the right side of the flow guide baffle, and a cleaning brush is fixedly connected to the right side of the cleaning arm.
[0005] As a further description of the above technical solution: The filter cartridge is provided with a connecting seat at the top, and a sealed bearing is provided at the lower end of the connecting seat. The outer ring of the sealed bearing is fixedly connected to the filter cartridge, and a second gear is fixedly connected to the outer ring of the sealed bearing. A motor is fixedly connected to the upper end of the can cover, and the output shaft of the motor extends through the can cover into the interior of the can and is fixedly connected to a first gear. The first gear and the second gear mesh with each other. The elastic force of the spring is less than the impact force when the lithium bicarbonate mother liquor enters the interior of the can. The front and rear ends of the left side of the guide baffle are rounded.
[0006] As a further description of the above technical solution: The bottom of the tank is provided with a suspension suppression component, which includes a conveying screw fixedly connected to the bottom of the filter cartridge. The bottom of the tank is provided with a shield, and a first fixing frame is fixedly connected between the outer side of the shield and the inner wall of the tank.
[0007] As a further description of the above technical solution: The shield is shaped like a frustum, narrow at the top and wide at the bottom. The outer bottom of the shield is in contact with the inner wall of the tank. The shield is elastic and wraps around the outside of the conveying screw. There is a gap between the shield and the filter cartridge.
[0008] As a further description of the above technical solution: The filter cartridge is equipped with a backwashing assembly, which includes a fixed shaft located inside the filter cartridge. The lower end of the fixed shaft passes through the filter cartridge and the conveying screw and extends to the bottom of the tank. The lower end of the fixed shaft is fixedly connected to the tank via a second fixing bracket. A piston plate is provided on the outside of the fixed shaft. A groove is formed at the lower end of the piston plate, and a sealing plate is movably connected inside the groove. A telescopic rod is fixedly connected between the sealing plate and the groove. Limiting blocks are fixedly connected to both sides of the fixed shaft in the internal area of the filter cartridge. A limiting groove matching the limiting block is formed in the middle of the sealing plate. Spiral grooves are formed on both the outer side of the piston plate and the inner side of the filter cartridge, and the spiral grooves on the inner side of the filter cartridge are designed bidirectionally.
[0009] As a further description of the above technical solution: The piston plate and the sealing plate are respectively provided with grooves to accommodate the telescopic rod. The telescopic rod is stored inside the groove after it is retracted. The fixed shaft and the filter cartridge are sealed together.
[0010] As a further description of the above technical solution: The tank is equipped with a pressure relief assembly, which includes a bladder fixedly connected to the inside of the tank. A conduit is fixedly connected to the bottom of the bladder, and the lower end of the conduit extends to the bottom of a fixed shaft and is fixedly connected thereto. The fixed shaft is hollow inside, and pressure valves are embedded in the front and rear ends of the fixed shaft inside the filter cartridge.
[0011] As a further description of the above technical solution: The elasticity of the bladder is greater than the pressure inside the tank under normal conditions.
[0012] As a further description of the above technical solution: An observation window is fixedly connected to the front end of the tank, and a drain pipe and support legs are fixedly connected to the bottom of the tank.
[0013] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: When the lithium bicarbonate mother liquor enters the tank through the feed pipe, it first impacts the guide baffle. The curved surfaces on both sides of the guide baffle then guide the liquor to impact the inner wall of the tank. This allows the lithium bicarbonate mother liquor to flow along the curved lines of the inner wall of the tank, filling the tank completely. This prevents the lithium bicarbonate mother liquor from directly impacting the filter cartridge, which could cause resin buildup and blockage. Simultaneously, when the lithium bicarbonate mother liquor impacts the guide baffle, the baffle is stretched by a spring and moves towards the filter cartridge, causing the cleaning arm to move synchronously. This allows the cleaning brush on the cleaning arm to contact the capture and interception surface of the filter cartridge. Because the filter cartridge is connected to the bottom of the connecting seat, which is clamped and fixed by the tank and the tank cover, the filter cartridge is suspended. The filter cartridge and the connecting seat are connected by a sealed bearing, and the outer ring of the sealed bearing... The filter cartridge is fixedly connected, and the inner ring of the sealed bearing is fixedly connected to the connecting seat. The motor drives the first gear to rotate, and the first gear meshes with the second gear to drive the second gear to rotate, so that the outer ring of the sealed bearing drives the filter cartridge to rotate synchronously. During the rotation, the filter cartridge continuously changes the area of contact with the cleaning brush, thereby using the cleaning brush to clean the surface of the filter cartridge, reducing the chance of clogging caused by resin adhering to the surface of the filter cartridge. At the same time, when the flow rate of lithium bicarbonate mother liquor entering the feed pipe increases, it will increase the filtration burden on the filter cartridge and make it more prone to clogging. Therefore, when the water flow rate increases, it will also push the guide baffle and cleaning arm closer to the filter cartridge, increasing the squeezing force between the cleaning brush and the outer wall of the filter cartridge, thereby increasing the cleaning friction, improving the cleaning power, and ensuring the cleaning effect on the filter cartridge. Attached Figure Description
[0014] Figure 1 A schematic diagram of a first process for applying a filtration device according to an embodiment of the present invention in lithium liquid extraction is shown. Figure 2A schematic diagram of a second process for applying the filtration device provided in an embodiment of the present invention to lithium liquid extraction is shown. Figure 3 A schematic diagram of the overall structure of the filtration device provided according to an embodiment of the present invention is shown; Figure 4 A cross-sectional structural schematic diagram of a filtration device provided according to an embodiment of the present invention is shown; Figure 5 The present invention provides an embodiment of the invention. Figure 4 Enlarged view of point A in the middle; Figure 6 The present invention provides an embodiment of the invention. Figure 4 Enlarged view at point B in the middle; Figure 7 The present invention provides an embodiment of the invention. Figure 4 Enlarged view at point C; Figure 8 A partial structural schematic diagram of a backwashing assembly provided according to an embodiment of the present invention is shown; Figure 9 A schematic diagram of a piston plate structure provided according to an embodiment of the present invention is shown.
[0015] Legend: 10. Tank body; 11. Tank lid; 12. Discharge pipe; 13. Inlet pipe; 14. Observation window; 15. Drain pipe; 16. Support legs; 17. Filter cartridge; 20. Anti-clogging component; 21. Flow deflector; 22. Spring; 23. Cleaning arm; 24. Cleaning brush; 25. Connecting seat; 26. Sealed bearing; 27. Motor; 28. First gear; 29. Second gear; 30. Suspension suspension assembly; 31. Conveying screw; 32. Shielding cover; 33. First fixing frame; 40. Backwash assembly; 41. Fixed shaft; 42. Piston plate; 43. Spiral groove; 44. Second fixing bracket; 45. Sealing plate; 46. Groove; 47. Telescopic rod; 48. Limiting groove; 49. Limiting block; 50. Pressure relief assembly; 51. Bag body; 52. Catheter; 53. Pressure valve. Detailed Implementation
[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0017] like Figures 1-6As shown, the present invention provides a lithium liquid extraction filtration device: a lithium liquid extraction filtration device includes a tank 10 and a tank cover 11 movably connected to the top of the tank 10. The top of the tank cover 11 and the left side of the tank 10 are respectively fixedly connected to a discharge pipe 12 and a feed pipe 13. The tank 10 is provided with a filter cartridge 17 inside. The front end of the tank 10 is fixedly connected to an observation window 14. The bottom of the tank 10 is fixedly connected to a drain pipe 15 and a support leg 16. It also includes an anti-clogging component 20 disposed inside the tank 10 to reduce the probability of clogging of the filter cartridge 17. The anti-clogging component 20 includes a flow guide baffle 21 located on the inner left side of the tank 10 corresponding to the feed pipe 13. A spring 22 is fixedly connected between the flow guide baffle 21 and the side wall of the tank 10. A cleaning arm 23 is fixedly connected to the right side of the flow guide baffle 21, and a cleaning brush 24 is fixedly connected to the right side of the cleaning arm 23. The top of the filter cartridge 17 is provided with a connecting seat 25, and the lower end of the connecting seat 25 is provided with a sealing bearing 26. The outer ring of the sealing bearing 26 is fixedly connected to the filter cartridge 17, and the outer ring of the sealing bearing 26 is fixedly connected with a second gear 29. The upper end of the can cover 11 is fixedly connected with a motor 27, and the output shaft of the motor 27 extends through the can cover 11 to the inside of the can body 10 and is fixedly connected with a first gear 28. The first gear 28 and the second gear 29 mesh with each other. The elastic force of the spring 22 is less than the impact force when the lithium bicarbonate mother liquor enters the inside of the can body 10. The front and rear ends of the left side of the guide baffle 21 are rounded.
[0018] Specifically, the lithium bicarbonate mother liquor to be filtered is first introduced into the tank 10 through the feed pipe 13. When the lithium bicarbonate mother liquor enters the tank 10 through the feed pipe 13, it first impacts the guide baffle 21, and is then guided by the arc-shaped surfaces on both sides of the guide baffle 21 to impact the inner wall of the tank 10. This allows the lithium bicarbonate mother liquor to flow along the arc of the inner wall of the tank 10 from both sides of the feed pipe 13 and fill the tank 10, preventing the lithium bicarbonate mother liquor from directly impacting the filter cartridge 17 and causing resin buildup. If blockage occurs at 7, the lithium bicarbonate mother liquor will pass through filter cartridge 17. The resin in the lithium bicarbonate mother liquor will be captured and intercepted by filter cartridge 17. The filtered lithium bicarbonate mother liquor will be discharged from tank 10 through discharge pipe 12. During the filtration process, the resin capture situation inside tank 10 can be observed through observation window 14. When the resin storage in tank 10 reaches a certain level, the intercepted resin will be discharged through discharge pipe 15 and returned to the exchanger used in the defluorination, heavy metal removal and softening process of lithium bicarbonate mother liquor. In addition, when the lithium bicarbonate mother liquor impacts the guide baffle 21, the guide baffle 21 is stretched by the spring 22 and moves towards the filter cartridge 17, thereby driving the cleaning arm 23 to move synchronously. This causes the cleaning brush 24 on the surface of the cleaning arm 23 to contact the capture and interception surface of the filter cartridge 17. Since the filter cartridge 17 is connected to the bottom of the connecting seat 25, and the connecting seat 25 is clamped and fixed by the tank body 10 and the tank cover 11, the filter cartridge 17 is in a suspended state. The filter cartridge 17 and the connecting seat 25 are connected by a sealed bearing 26, and the outer ring of the sealed bearing 26 is fixedly connected to the filter cartridge 17, and the inner ring of the sealed bearing 26 is fixedly connected to the connecting seat 25. The motor 27 drives the first gear 28 to rotate, and the first gear 28 meshes with the second gear 29. The rotation of the second gear 29 causes the outer ring of the sealed bearing 26 to drive the filter cartridge 17 to rotate synchronously. During the rotation, the filter cartridge 17 continuously changes the area in contact with the cleaning brush 24, thereby using the cleaning brush 24 to clean the surface of the filter cartridge 17. This reduces the probability of resin adhering to the surface of the filter cartridge 17 and causing blockage. At the same time, when the flow rate of lithium bicarbonate mother liquor entering the feed pipe 13 increases, it will increase the filtration burden of the filter cartridge 17 and make it more prone to blockage. Therefore, when the water flow rate increases, it will also push the guide baffle 21 and the cleaning arm 23 closer to the filter cartridge 17, increasing the squeezing force between the cleaning brush 24 and the outer wall of the filter cartridge 17, thereby increasing the cleaning friction, improving the cleaning power, and ensuring the cleaning effect on the filter cartridge 17. By avoiding direct impact on specific areas and through continuous cleaning, the unobstructed flow of the filter cartridge 17 is greatly ensured. At the same time, the lithium bicarbonate mother liquor entering the tank 10 also passes through the filter cartridge 17 from different directions, increasing the capture and interception area of the filter cartridge 17 and optimizing the capture effect of the resin trap.
[0019] like Figure 4 and Figure 8 As shown, the bottom of the tank 10 is provided with a suspension suppression component 30. The suspension suppression component 30 includes a conveying screw 31 fixedly connected to the bottom of the filter cartridge 17. The bottom of the tank 10 is provided with a shield 32, and a first fixing frame 33 is fixedly connected between the outer side of the shield 32 and the inner wall of the tank 10. The shield 32 is a frustum shape that is narrow at the top and wide at the bottom. The bottom outer side of the shield 32 is in contact with the inner wall of the tank 10. The shield 32 is elastic and wraps around the outside of the conveying screw 31. There is a gap between the shield 32 and the filter cartridge 17.
[0020] Specifically, when the filter cartridge 17 rotates, it drives the conveying screw 31 to rotate synchronously. When the conveying screw 31 rotates, it provides a downward conveying force, which causes the intercepted resin to be conveyed to the bottom of the tank 10. The resin near the filter cartridge 17 moves to the bottom of the shield 32 through the gap between the filter cartridge 17 and the shield 32 under the action of the conveying force. The resin near the inner wall of the tank 10 is squeezed by the shield 32, which is narrow at the top and wide at the bottom, and separated from the inner wall of the tank 10 under the action of the internal pressure of the tank 10. It eventually passes through the shield 32 to its bottom position. Then, the shield 32 blocks the resin, reducing the chance of it floating due to the water flow, further reducing the chance of the filter cartridge 17 clogging and ensuring the filtration effect.
[0021] like Figure 8 and Figure 9 As shown, the filter cartridge 17 is provided with a backwashing assembly 40 inside. The backwashing assembly 40 includes a fixed shaft 41 located inside the filter cartridge 17. The lower end of the fixed shaft 41 passes through the filter cartridge 17 and the conveying screw 31 and extends to the bottom of the tank body 10. The lower end of the fixed shaft 41 is fixedly connected to the tank body 10 through a second fixing bracket 44. A piston plate 42 is provided outside the fixed shaft 41. A groove 46 is provided at the lower end of the piston plate 42. A sealing plate 45 is movably connected inside the groove 46. A telescopic rod 47 is fixedly connected between the sealing plate 45 and the groove 46. Limiting blocks 49 are fixedly connected on both sides of the fixed shaft 41 in the internal area of the filter cartridge 17. A limiting groove 48 matching the limiting block 49 is provided in the middle of the sealing plate 45. Spiral grooves 43 are provided on both the outer side of the piston plate 42 and the inner side of the filter cartridge 17. The spiral grooves 43 on the inner side of the filter cartridge 17 are bidirectional. The piston plate 42 and the sealing plate 45 are respectively provided with grooves to accommodate the telescopic rod 47. After the telescopic rod 47 is retracted, it is stored inside the groove. The fixed shaft 41 and the filter cartridge 17 are sealed.
[0022] Specifically, when the filter cartridge 17 rotates, the spiral groove 43 applies a rotational force to the piston plate 42. Since the piston plate 42 is connected to the sealing plate 45 via the telescopic rod 47, and the sealing plate 45 is restricted from rotating by the limiting groove 48 in its middle and the limiting block 49 on the side of the fixed shaft 41, the piston plate 42 changes from rotational motion to linear motion, causing the piston plate 42 to move up and down along the fixed shaft 41. When the piston plate 42 moves up along the fixed shaft 41, it pushes the sealing plate 45 down under the resistance of water flow and pulls the telescopic rod 47 to unfold, thus causing the piston plate 42 to move up and down. With the piston plate 42 in an open state, it will not affect the flow of lithium bicarbonate mother liquor. When the piston plate 42 moves downward along the fixed shaft 41, the sealing plate 45 moves upward due to water flow resistance and pushes the telescopic rod 47 to retract and be stored inside the groove 46 together, so that the piston plate 42 is in a closed state. This allows the piston plate 42 to push the lithium bicarbonate mother liquor at its bottom back, so that the lithium bicarbonate mother liquor inside the filter cartridge 17 flows to the outside of the filter cartridge 17, realizing backwashing of the filter cartridge 17, thereby ensuring the smooth flow of the filter cartridge 17 and further reducing the probability of clogging of the filter cartridge 17.
[0023] like Figure 7 and Figure 8 As shown, the tank 10 is equipped with a pressure relief assembly 50. The pressure relief assembly 50 includes a bladder 51 fixedly connected to the inside of the tank 10. A conduit 52 is fixedly connected to the bottom of the bladder 51, and the lower end of the conduit 52 extends to the bottom of the fixed shaft 41 and is fixedly connected thereto. The inside of the fixed shaft 41 is hollow. Pressure valves 53 are embedded in the front and rear ends of the fixed shaft 41 inside the filter cartridge 17. The elasticity of the bladder 51 is greater than the pressure inside the tank 10 under normal conditions.
[0024] Specifically, since the pressure inside the tank 10 will increase after the filter cartridge 17 is blocked, the increased pressure may cause leakage or even rupture at the connection of the tank 10. Therefore, it is necessary to stop the machine to clean or replace the filter cartridge 17. However, the pressure increase may damage the tank 10 in an instant. Therefore, it is necessary to depressurize the inside of the tank 10 before stopping the machine to replace the filter cartridge 17. Based on this, when the outer wall of the filter cartridge 17 is completely blocked by resin, the continuous flow of lithium bicarbonate mother liquor into the tank 10 will increase the internal pressure of the tank 10, thereby squeezing the bladder 51 and causing it to contract and deform. After contraction, the bladder 51 will guide the processed lithium liquid stored inside into the fixed shaft 41 through the conduit 52, and discharge it through the pressure valve 53 on the surface of the fixed shaft 41. It should be noted that when the filter cartridge 17 is blocked, the lithium bicarbonate mother liquor inside the tank 10 can no longer enter the interior of the filter cartridge 17, and the filter... The filtered liquid inside the filter cartridge 17 has been discharged outside the tank 10, so the inside of the filter cartridge 17 is empty. Therefore, the lithium liquid sprayed from the pressure valve 53 can flush the filter cartridge 17 from the inside, causing the resin on the outside of the filter cartridge 17 to detach from its original position under impact, restoring the flow in some areas of the filter cartridge 17. This allows some lithium bicarbonate mother liquor to pass through the filter cartridge 17, thereby reducing the internal pressure of the tank 10 and playing a role in emergency depressurization of the tank 10, improving the safety of the resin catcher during operation.
[0025] Working principle: First, the lithium bicarbonate mother liquor to be filtered is introduced into the tank 10 through the feed pipe 13. When the lithium bicarbonate mother liquor enters the tank 10 through the feed pipe 13, it first impacts the guide baffle 21, and is then guided by the arc-shaped surfaces on both sides of the guide baffle 21 to impact the inner wall of the tank 10. This allows the lithium bicarbonate mother liquor to flow along the arc of the inner wall of the tank 10 from both sides of the feed pipe 13 and fill the tank 10, avoiding direct impact of the lithium bicarbonate mother liquor on the filter cartridge 17, which would cause resin accumulation and make the filter cartridge 17... If blockage occurs at 7, the lithium bicarbonate mother liquor will then pass through filter cartridge 17. The resin in the lithium bicarbonate mother liquor will be captured and intercepted by filter cartridge 17. The filtered lithium bicarbonate mother liquor will be discharged from tank 10 through discharge pipe 12. During the filtration process, the resin capture situation inside tank 10 can be observed through observation window 14. When the resin storage level inside tank 10 reaches a certain level, the intercepted resin will be discharged through drain pipe 15 and returned to the exchanger used in the defluorination, heavy metal removal and softening treatment process of lithium bicarbonate mother liquor.
[0026] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.
Claims
1. A filtration device for lithium liquid extraction, comprising a tank (10) and a tank cover (11) movably connected to the top of the tank (10), wherein a discharge pipe (12) and a feed pipe (13) are respectively fixedly connected to the top of the tank cover (11) and the left side of the tank (10), and a filter cartridge (17) is provided inside the tank (10), characterized in that, It also includes an anti-clogging component (20) installed inside the tank (10) to reduce the chance of clogging of the filter cartridge (17); The anti-clogging component (20) includes a flow guide baffle (21) located on the left inner wall of the tank (10) corresponding to the feed pipe (13). A spring (22) is fixedly connected between the flow guide baffle (21) and the side wall of the tank (10). A cleaning arm (23) is fixedly connected to the right side of the flow guide baffle (21), and a cleaning brush (24) is fixedly connected to the right side of the cleaning arm (23).
2. The filtration device for lithium liquid extraction according to claim 1, characterized in that, The filter cartridge (17) is provided with a connecting seat (25) at the top and a sealing bearing (26) at the lower end of the connecting seat (25). The outer ring of the sealing bearing (26) is fixedly connected to the filter cartridge (17), and a second gear (29) is fixedly connected to the outer ring of the sealing bearing (26). A motor (27) is fixedly connected to the upper end of the can cover (11), and the output shaft of the motor (27) extends through the can cover (11) to the inside of the can body (10) and is fixedly connected to a first gear (28). The first gear (28) meshes with the second gear (29). The elastic force of the spring (22) is less than the impact force when the lithium bicarbonate mother liquor enters the inside of the can body (10). The front and rear ends of the left side of the guide baffle (21) are rounded.
3. The filtration device for lithium liquid extraction according to claim 1, characterized in that, The tank (10) is provided with a suspension suppression component (30) at the bottom of its interior. The suspension suppression component (30) includes a conveying screw (31) fixedly connected to the bottom of the filter cartridge (17). The tank (10) is provided with a shield (32) at the bottom of its interior, and a first fixing frame (33) is fixedly connected between the outer side of the shield (32) and the inner wall of the tank (10).
4. A filtration device for lithium liquid extraction according to claim 3, characterized in that, The shield (32) is a frustum shape that is narrow at the top and wide at the bottom. The outer bottom of the shield (32) is in contact with the inner wall of the tank (10). The shield (32) is elastic. The shield (32) is wrapped around the outside of the conveying screw (31). There is a gap between the shield (32) and the filter cartridge (17).
5. A filtration device for lithium liquid extraction according to claim 3, characterized in that, The filter cartridge (17) is equipped with a backwashing assembly (40). The backwashing assembly (40) includes a fixed shaft (41) located inside the filter cartridge (17). The lower end of the fixed shaft (41) passes through the filter cartridge (17) and the conveying screw (31) and extends to the bottom of the tank (10). The lower end of the fixed shaft (41) is fixedly connected to the tank (10) through a second fixing bracket (44). The outside of the fixed shaft (41) is equipped with a piston plate (42). The lower end of the piston plate (42) is provided with a groove (46). Furthermore, a sealing plate (45) is movably connected inside the groove (46), and a telescopic rod (47) is fixedly connected between the sealing plate (45) and the groove (46). Limiting blocks (49) are fixedly connected on both sides of the fixed shaft (41) in the internal area of the filter cylinder (17). A limiting groove (48) matching the limiting block (49) is opened in the middle of the sealing plate (45). Spiral grooves (43) are opened on both the outer side of the piston plate (42) and the inner side of the filter cylinder (17), and the spiral grooves (43) on the inner side of the filter cylinder (17) are designed in both directions.
6. A filtration device for lithium liquid extraction according to claim 5, characterized in that, The piston plate (42) and the sealing plate (45) are respectively provided with grooves to accommodate the telescopic rod (47). The telescopic rod (47) is stored inside the groove after it is retracted. The fixed shaft (41) and the filter cartridge (17) are sealed.
7. A filtration device for lithium liquid extraction according to claim 5, characterized in that, The tank (10) is equipped with a pressure relief assembly (50). The pressure relief assembly (50) includes a bladder (51) fixedly connected to the inside of the tank (10). A conduit (52) is fixedly connected to the bottom of the bladder (51), and the lower end of the conduit (52) extends to the bottom of the fixed shaft (41) and is fixedly connected thereto. The inside of the fixed shaft (41) is hollow. Pressure valves (53) are embedded in the front and rear ends of the fixed shaft (41) inside the filter cartridge (17).
8. A filtration device for lithium liquid extraction according to claim 7, characterized in that, The elasticity of the bladder (51) is greater than the pressure inside the canister (10) under normal conditions.
9. A filtration device for lithium liquid extraction according to claim 1, characterized in that, An observation window (14) is fixedly connected to the front end of the tank (10), and a drain pipe (15) and a support leg (16) are fixedly connected to the bottom of the tank (10).