A solid-liquid separation device for lithium ion battery separator extraction tank

Abstract

The application relates to the technical field of lithium extraction tanks, in particular to a solid-liquid separation device of a lithium ion battery diaphragm extraction tank, which comprises a submerged chamber, a phase separation chamber, a separation structure, a collection structure, a filtering structure, an anti-blocking structure, a cleaning structure, a stirring structure, a mixing chamber, a flow port, a clarifying chamber, a flow guide outlet and an aqueous phase backflow pipe; the lighter organic phase on the upper layer of the aqueous phase is scraped off through the separation structure, the separation effect of the organic phase is good, the purity of the aqueous phase is improved, and the extraction effect of the extraction tank is improved; the organic phase is collected through the collection structure, so that the organic phase is prevented from being scraped off to the ground and polluting the ground; impurities in the mixed solution are filtered through the filtering structure, the filtering structure is convenient to disassemble and replace, and the filtering effect is improved; the larger impurities at the first filter screen are stirred and scattered through the anti-blocking structure, so that the impurities are prevented from being accumulated on the first filter screen and affecting the filtering effect of the first filter screen; the impurities in the phase separation chamber are cleaned through the cleaning structure, and the use effect of the device is improved.

Description

Technical Field

[0001] This invention relates to the field of lithium extraction tank technology, specifically a solid-liquid separation device for a lithium-ion battery separator extraction tank. Background Technology

[0002] Extraction is an important step in the manufacturing process of lithium-ion battery separators. The extraction process is carried out in an extraction tank containing an extractant. An oil film containing oil enters the extraction tank and is extracted by the extractant. The extracted oil is an organic phase, while the water containing metal ions is an aqueous phase. It is necessary to separate the oil and aqueous phases in the extraction tank to obtain a relatively pure aqueous phase, which facilitates the subsequent extraction of lithium ions.

[0003] However, traditional extraction tanks achieve oil-water separation by removing the lighter organic phase from the upper part of the aqueous phase through the organic phase outlet (the extraction tank reference is the one in patent publication number CN217794647U). When the aqueous phase reflux outlet inside the extraction tank discharges too quickly, or when the organic phase outlet is blocked, the internal liquid level changes, causing insufficient contact between the organic phase outlet at the top and the organic phase inside the separation chamber, thus affecting the separation of the organic and aqueous phases and resulting in poor separation efficiency. At the same time, the filter structure is integrated with the separation chamber. When the filter structure is blocked, multiple support rods inside the separation chamber need to be removed, and then the separation chamber needs to be disassembled to replace the filter screen. The filter screen replacement is slow, affecting the filtration of impurities in the mixture by the separation chamber. After being filtered, the impurities will settle inside the separation chamber and cannot be processed, affecting the subsequent use of the separation chamber. Summary of the Invention

[0004] To address the problems in the prior art, the present invention provides a solid-liquid separation device for a lithium-ion battery separator extraction tank.

[0005] The technical solution adopted by this invention to solve its technical problem is: a solid-liquid separation device for a lithium-ion battery separator extraction tank, comprising: a submersible chamber; a phase separation chamber connected to one side of the submersible chamber; a mixing chamber disposed inside the submersible chamber; a clarification chamber disposed inside the phase separation chamber; an outlet connecting the mixing chamber and the phase separation chamber; a guide outlet disposed on the clarification chamber; and an aqueous phase reflux pipe disposed on the phase separation chamber.

[0006] The mixing chamber includes a stirring structure comprising stirring blades. The stirring blades are fixedly connected to the output end of a second motor, which is fixed to the submersible chamber. The separation structure includes a flow guide block, which is fixedly connected to the phase separation chamber. The flow guide block has an L-shaped flow hole. A first hydraulic rod is fixedly connected to the phase separation chamber. A push plate is fixedly connected to the telescopic end of the first hydraulic rod. A second hydraulic rod is fixedly connected to the telescopic end of the second hydraulic rod. A lifting plate with an L-shaped cross-section is fixedly connected to the telescopic end of the second hydraulic rod. The lifting plate and the push plate are slidably connected. Two guide posts are fixedly connected to the push plate. The guide posts are slidably connected to the lifting plate, and the lifting plate is slidably connected to the phase separation chamber. The phase separation chamber also includes a filtration structure.

[0007] Specifically, a fixing block is fixedly connected to the phase separation chamber, and a guide rod is slidably connected to the fixing block. One end of the guide rod is fixedly connected to the push plate.

[0008] Specifically, the phase separation chamber is equipped with a mounting bracket, and the mounting bracket is equipped with a nozzle.

[0009] Specifically, a collection structure is provided on the side of the phase separation chamber away from the submersible chamber. The collection structure includes a collection box, which is detachably connected to one side of the phase separation chamber. A pedal is slidably connected to the collection box, and a locking block is fixedly connected to the pedal. The locking block is slidably connected to the collection box and is slidably connected to the inside of a slot. The slot is located on an insert block, which is fixedly connected to the phase separation chamber. The insert block is slidably connected to a slot, which is located on the collection box.

[0010] Specifically, the collection box is provided with two guide shafts, the pedal is slidably connected to the guide shafts, a first spring is provided on the outside of the guide shafts, and the first spring is fixedly connected between the pedal and the collection box.

[0011] Specifically, the filter structure includes mounting frames, and two mounting frames are slidably connected to the phase separation chamber. A first filter screen with a circular cross-section is fixedly connected to one mounting frame, and a second filter screen with a rectangular cross-section is fixedly connected to the other mounting frame.

[0012] Specifically, a first sealing gasket is clamped between the mounting frame and the phase separation chamber. The mounting frame is provided with a limiting groove. A limiting block is slidably connected inside the limiting groove. The limiting block is slidably connected to the phase separation chamber. A second spring is fixedly connected between the limiting block and the phase separation chamber. A push block is provided on the limiting block.

[0013] Specifically, the push block is provided with a positioning hole, the phase separation chamber is fixedly connected to an installation block, the installation block is slidably connected to a pin, and the pin is slidably connected to the positioning hole.

[0014] Specifically, the submersible chamber is equipped with an anti-clogging structure, which includes a first motor. The first motor is fixedly connected to the submersible chamber, and a connecting shaft is fixedly connected to the output end of the first motor. The connecting shaft is rotatably connected to the submersible chamber. A first gear is fixedly connected to the end of the connecting shaft, and a second gear meshes with one side of the first gear. Both the first gear and the second gear are helical gears. A rotating shaft is fixedly connected to the second gear. The rotating shaft is perpendicular to the connecting shaft and is rotatably connected to the submersible chamber and a phase-separation chamber. An impeller is fixedly connected to the rotating shaft, and the impeller abuts against the first filter screen.

[0015] Specifically, the phase separation chamber is provided with a cleaning structure, which includes a collection box. The collection box is slidably connected to the phase separation chamber. A second sealing gasket is clamped between the collection box and the phase separation chamber. A trapezoidal abutment is fixedly connected to the collection box. A fixing strip is fixedly connected to the phase separation chamber. A screw is rotatably connected to the fixing strip. A slider is threadedly connected to the screw. The slider is slidably connected to the fixing strip. The slider abuts against the abutment.

[0016] The beneficial effects of this invention are:

[0017] (1) The solid-liquid separation device of the lithium-ion battery separator extraction tank of the present invention has a separation structure on the phase separation chamber, which facilitates the scraping of the lighter organic phase on the upper layer of the aqueous phase, and the separation of the organic phase is effective, thereby improving the purity of the aqueous phase and the extraction effect of the extraction tank.

[0018] (2) The solid-liquid separation device of the lithium-ion battery membrane extraction tank of the present invention has a collection structure on one side of the phase separation chamber. The organic phase scraped off from the aqueous phase is collected by the collection structure, thereby avoiding the organic phase being scraped off to the ground and polluting the ground, and at the same time facilitating the subsequent treatment of the organic phase.

[0019] (3) The solid-liquid separation device of the lithium-ion battery separator extraction tank of the present invention has a filter structure on the phase separation chamber, which facilitates the filtration of impurities in the mixture. At the same time, the filter structure is easy to disassemble and replace, which improves the filtration effect.

[0020] (4) The solid-liquid separation device of the lithium-ion battery separator extraction tank of the present invention has an anti-clogging structure on the submersible chamber. The anti-clogging structure disperses larger impurities at the first filter screen, thereby preventing impurities from accumulating on the first filter screen and affecting the filtration effect of the first filter screen.

[0021] (5) The solid-liquid separation device of the lithium-ion battery separator extraction tank of the present invention has a cleaning structure inside the phase separation chamber, which facilitates the collection of larger deposited impurities in front of the first filter screen, cleans the impurities, and improves the performance of the device. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Figure 1 This is a schematic diagram of the overall structure of a preferred embodiment of a solid-liquid separation device for a lithium-ion battery separator extraction tank provided by the present invention.

[0024] Figure 2 for Figure 1 The diagram shown is an enlarged view of the structure of part A.

[0025] Figure 3 for Figure 1 The diagram shown is an enlarged view of the structure of section B.

[0026] Figure 4 for Figure 1 The diagram shown is an enlarged view of the C-section structure.

[0027] Figure 5 This is a schematic diagram of the connection structure between the stirring structure and the submersible chamber of the present invention;

[0028] Figure 6 for Figure 5 The diagram shown is an enlarged view of the structure of part D.

[0029] Figure 7 for Figure 5 The diagram shown is an enlarged view of the E-section structure.

[0030] Figure 8 This is a schematic diagram of the connection structure between the mounting frame and the first filter screen of the present invention;

[0031] Figure 9 This is a schematic diagram of the connection structure between the phase separation chamber and the collection box of the present invention;

[0032] Figure 10 This is a schematic diagram of the connection structure between the screw and the slider of the present invention;

[0033] Figure 11 This is a schematic diagram of the connection structure between the drainage block and the drainage hole of the present invention;

[0034] Figure 12 This is a schematic diagram of the connection structure between the plug and the slot of the present invention;

[0035] Figure 13 for Figure 12 The diagram shows an enlarged view of the F-section structure.

[0036] Figure 14 This is a schematic diagram of the connection structure between the second hydraulic rod and the lifting plate of the present invention.

[0037] In the diagram: 1. Submersible chamber; 2. Phase separation chamber; 3. Separation structure; 301. First hydraulic rod; 302. Push plate; 303. Fixing block; 304. Guide rod; 305. Second hydraulic rod; 306. Lifting plate; 307. Guide column; 308. Drainage block; 309. Drainage hole; 310. Mounting bracket; 311. Nozzle; 4. Collection structure; 401. Collection box; 402. Pedal; 403. Locking block; 404. Locking groove; 405. Insertion block; 406. Slot; 407. Guide shaft; 408. First spring; 5. Filter structure; 501. Mounting frame; 502. First filter screen; 503. Second filter screen; 504. Limiting groove; 505. 506. Limiting block; 507. Push block; 508. Second spring; 509. Positioning hole; 510. Mounting block; 511. Pin; 512. First sealing gasket; 6. Anti-clogging structure; 601. First motor; 602. Connecting shaft; 603. First gear; 604. Second gear; 605. Rotating shaft; 606. Impeller; 7. Cleaning structure; 701. Collection box; 702. Second sealing gasket; 703. Abutment block; 704. Fixing strip; 705. Screw; 706. Slider; 8. Stirring structure; 801. Second motor; 802. Stirring blade; 9. Mixing chamber; 10. Flow outlet; 11. Clarification chamber; 12. Guide outlet; 13. Aqueous phase return pipe. Detailed Implementation

[0038] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0039] like Figures 1-14 As shown, the solid-liquid separation device for a lithium-ion battery separator extraction tank according to the present invention includes a submersible chamber 1; a phase separation chamber 2, one side of which is connected to the phase separation chamber 2; a mixing chamber 9, which is located inside the submersible chamber 1; a clarification chamber 11, which is located inside the phase separation chamber 2; an outlet 10, which connects the mixing chamber 9 and the phase separation chamber 2; a guide outlet 12, which is located on the clarification chamber 11; and an aqueous phase return pipe 13, which is located on the phase separation chamber 2.

[0040] The mixing chamber 9 is equipped with a stirring structure 8, which includes stirring blades 802. The stirring blades 802 are fixedly connected to the output end of a second motor 801, which is fixed to the submerged chamber 1.

[0041] The separation structure 3 includes a diversion block 308, which is fixedly connected to the phase separation chamber 2. The diversion block 308 has an L-shaped diversion hole 309. A first hydraulic rod 301 is fixedly connected to the phase separation chamber 2. A push plate 302 is fixedly connected to the telescopic end of the first hydraulic rod 301. A second hydraulic rod 305 is fixedly connected to the push plate 302. An L-shaped lifting plate 306 is fixedly connected to the telescopic end of the second hydraulic rod 305. The lifting plate 306 and the push plate 302 are slidably connected. Two guide posts 307 are fixedly connected to the push plate 302. The guide posts 307 and the lifting plate 306 are slidably connected. 06 is slidably connected to the phase separation chamber 2; a filter structure 5 is provided on the phase separation chamber 2; a fixing block 303 is fixedly connected to the phase separation chamber 2, and a guide rod 304 is slidably connected to the fixing block 303, one end of the guide rod 304 is fixedly connected to the push plate 302; a mounting frame 310 is provided on the phase separation chamber 2, and a nozzle 311 is provided on the mounting frame 310; that is: when the mixed liquid inside the phase separation chamber 2 passes through the clarification chamber 11, the phase separation is completed, and the mixed liquid is separated into an aqueous phase and an organic phase. Finally, the aqueous phase and the organic phase are discharged from the guide outlet 12. The organic phase and the aqueous phase rise. Since the organic phase is lighter, it will float above the aqueous phase. The aqueous phase below will flow out from the guide hole on the guide block 308. The water phase (309) flows vertically back into another cavity containing only the aqueous phase in the phase separation chamber 2, and is eventually drawn away by the aqueous phase return pipe 13. The organic phase will remain floating on the surface and will not sink into the drainage hole 309. Therefore, when the organic phase accumulates due to obstruction by the lifting plate 306, the first hydraulic rod 301 can be activated. The first hydraulic rod 301 extends, causing the push plate 302 to slide. The push plate 302 causes the lifting plate 306 to slide together. When the lifting plate 306 contacts the side wall of the phase separation chamber 2, the second hydraulic rod 305 can be activated. The second hydraulic rod 305 retracts, thereby causing the lifting plate 306 to rise and lift the organic phase on the lifting plate 306. At this time, the first hydraulic rod 301 is activated again, causing the push plate 302 and the lifting plate 306 to move together. Together, they are moved above the collection structure 4, and the nozzle 311 on the mounting frame 310 is activated. The organic phase on the lifting plate 306 is flushed into the collection structure 4 by the water flow. After flushing, the first hydraulic rod 301 is retracted to the initial position, and then the second hydraulic rod 305 is extended, thereby driving the lifting plate 306 down into the water phase. During the operation, a small amount of newly generated organic phase will float back to the top of the lifting plate 306 under the action of buoyancy. When too much organic phase accumulates, the above operation can be repeated to scrape off the organic phase in the water phase. The setting of the fixing block 303 and the guide rod 304 improves the stability of the push plate 302 when sliding, and the setting of the guide column 307 improves the stability of the lifting plate 306 when sliding.

[0042] Specifically, a collection structure 4 is provided on the side of the phase separation chamber 2 away from the submersible chamber 1. The collection structure 4 includes a collection box 401. The collection box 401 is detachably connected to one side of the phase separation chamber 2. A pedal 402 is slidably connected to the collection box 401. A locking block 403 is fixedly connected to the pedal 402. The locking block 403 is slidably connected to the collection box 401 and is slidably connected to the inside of a slot 404. The slot 404 is located on an insert block 405. The insert block 405 is fixedly connected to the phase separation chamber 2 and is slidably connected to a slot 406. The slot 406 is located on the collection box 401. Two guide shafts 407 are provided on the collection box 401. The pedal 402 is slidably connected to the guide shafts 407. A first spring 408 is provided on the outside of the guide shafts 407. The first spring 408 is fixedly connected between the pedal 402 and the collection box 401. That is: scraping The organic phase is flushed into the collection box 401 at the bottom by the water flow from the nozzle 311. When the collection box 401 is full, the pedal 402 can be stepped on, which will cause the locking block 403 to disengage from the slot 404. At this time, the collection box 401 can be pulled, which will cause the insert block 405 to separate from the slot 406, and then the collection box 401 can be pushed away. When replacing the collection box 401, the slot 406 can be aligned with the insert block 405 on one side of the phase separation chamber 2, and the locking block 403 can be removed. Both the end of 03 and the end of the insertion block 405 are trapezoidal. Therefore, when inserted, the locking block 403 will descend first, and the first spring 408 will retract. When the position of the slot 404 slides above the locking block 403, under the reset action of the first spring 408, the locking block 403 will re-lock into the inside of the slot 404, thereby fixing the collection box 401 to one side of the phase separation chamber 2. The setting of the guide shaft 407 avoids the first spring 408 from deviating and at the same time improves the stability of the sliding of the pedal 402.

[0043] Specifically, the filter structure 5 includes a mounting frame 501. Two mounting frames 501 are slidably connected to the phase separation chamber 2. A first filter screen 502 with a circular cross-section is fixedly connected to one mounting frame 501, and a second filter screen 503 with a rectangular cross-section is fixedly connected to the other mounting frame 501. A first sealing gasket 511 is sandwiched between the mounting frame 501 and the phase separation chamber 2. A limiting groove 504 is provided on the mounting frame 501, and a limiting block 505 is slidably connected inside the limiting groove 504. The limiting block 505 is slidably connected to the phase separation chamber 2. A second spring 507 is fixedly connected between the limiting block 505 and the phase separation chamber 2. A push block 506 is provided on the limiting block 505. A positioning hole 508 is provided on the push block 506. An installation block 509 is fixedly connected to the phase separation chamber 2. A pin 510 is slidably connected to the installation block 509. The pin 510 is slidably connected to the positioning hole 508. That is, the extract is introduced into the mixing chamber 9 inside the submerged chamber 1, and the second motor 801 is started. The second motor 801 drives... The stirring blade 802 rotates, making the extract more evenly mixed. The mixed liquid enters the phase separation chamber 2 through the outlet 10, and then passes through the first filter screen 502 to remove larger impurities. It then enters the middle section of the phase separation chamber 2, and after passing through the second filter screen 503, it enters the clarification chamber 11 for clarification and phase separation. When the first filter screen 502 and the second filter screen 503 need to be replaced after a long period of use, the push block 506 can be pushed. The push block 506 drives the limiting block 505 to slide, the second spring 507 is compressed, and the limiting block 505 does not move. Then, it engages with the limiting groove 504 on the mounting frame 501. At this time, the mounting frame 501 can be pulled out from the phase separation chamber 2 through the handle on the mounting frame 501, so as to replace the second filter screen 503 and the first filter screen 502. When the push block 506 slides to a certain position, the pin 510 on the mounting block 509 can be inserted into the positioning hole 508 on the push block 506, thereby avoiding the need to hold the push block 506 continuously when disassembling the mounting frame 501. The setting of the first sealing gasket 511 improves the sealing between the mounting frame 501 and the phase separation chamber 2.

[0044] Specifically, the submersible chamber 1 is equipped with an anti-clogging structure 6, which includes a first motor 601. The first motor 601 is fixedly connected to the submersible chamber 1, and a connecting shaft 602 is fixedly connected to the output end of the first motor 601. The connecting shaft 602 is rotatably connected to the submersible chamber 1. A first gear 603 is fixedly connected to the end of the connecting shaft 602, and a second gear 604 meshes with one side of the first gear 603. Both the first gear 603 and the second gear 604 are helical gears. A rotating shaft 605 is fixedly connected to the second gear 604. The rotating shaft 605 is perpendicular to the connecting shaft 602 and is rotatably connected to the submersible chamber 1. The shaft 605 is rotatably connected to the phase separation chamber 2. An impeller 606 is fixedly connected to the shaft 605, and the impeller 606 abuts against the first filter screen 502. That is, when the mixed liquid flows from the outlet 10 to the first filter screen 502, the first motor 601 is started. The first motor 601 drives the connecting shaft 602 to rotate. The rotation of the connecting shaft 602 drives the first gear 603 to rotate. The rotation of the first gear 603 drives the second gear 604 to rotate. The rotation of the second gear 604 drives the shaft 605 to rotate. The rotation of the shaft 605 drives the impeller 606 on one side of the first filter screen 502 to rotate, thereby stirring up the impurities in the mixed liquid passing through the first filter screen 502 and preventing the impurities from clogging the first filter screen 502.

[0045] Specifically, the phase separation chamber 2 is equipped with a cleaning structure 7, which includes a collection box 701. The collection box 701 is slidably connected to the phase separation chamber 2, and a second sealing gasket 702 is clamped between the collection box 701 and the phase separation chamber 2. A trapezoidal abutment 703 is fixedly connected to the collection box 701. A fixing strip 704 is fixedly connected to the phase separation chamber 2, and a screw 705 is rotatably connected to the fixing strip 704. A slider 706 is threadedly connected to the screw 705, and the slider 706 is slidably connected to the fixing strip 704. The slider 706 abuts against the abutment 703. That is, after the phase separation chamber 2 extracts the mixture for a period of time, due to the weight of the impurities, they will fall into the collection box 701 next to the first filter screen 502. After long-term use, the accumulated impurities will increase. At this time, the phase separation chamber 2 can be opened. After closing the valve on one side of the drain pipe and the valve on the inlet pipe on one side of the submersible chamber 1 to discharge the mixed liquid inside the phase separation chamber 2, the screw 705 on the fixing bar 704 can be rotated. The screw 705 drives the slider 706 to slide upward. The slider 706 no longer touches the abutment block 703. At this time, the collection box 701 can be pulled out through the groove at the bottom of the abutment block 703 to clean the impurities accumulated inside the collection box 701. When installing the collection box 701, the slider 706 will continuously touch the abutment block 703 on the collection box 701 as the screw 705 is rotated and slides down. The abutment block 703 has a trapezoidal cross section. The sliding block 706 continues to descend and the resistance of the abutment block 703 becomes stronger, which will cause the collection box 701 to continuously touch the second sealing gasket 702, making the sealing effect better. After cleaning, close the valve on the drain pipe and open the valve on the inlet pipe to continue the extraction and phase separation work.

[0046] Before use, this invention involves simultaneously adding battery waste, sodium sulfate, and aluminum sulfate to a reaction tank. The battery waste contains lithium ions, which are replaced by the added sodium ions in LiNa2AlF6, allowing the lithium ions to enter the solution. The added aluminum ions then combine with dissolved fluoride ions to form [AlF6]. 3-A complex is formed to prevent fluorine from forming a precipitate with the dissolved lithium. After dissolution, the pH is adjusted using a soda ash solution. Aluminum ions in the solution react with fluoride ions to form AlF3 precipitate, simultaneously removing both aluminum and fluoride. Finally, the solution undergoes deep defluorination using a zirconium-based defluorinating agent. The resulting solution, along with the solution from the ternary lithium waste system, is then processed in an MVR concentration system for lithium carbonate production. Through numerous experiments, the optimal reaction temperature, pH, time, and aluminum sulfate addition ratio for the dissolution reaction, as well as the optimal temperature and pH for the defluorination reaction, were determined. Specifically, a certain volume of water is added to the reaction tank, and after stirring, battery waste and aluminum sulfate are added. Water is then added according to the required solid-liquid ratio. The temperature is raised to the set value, and sulfuric acid is added to the required value. The reaction is carried out at the required temperature. After the reaction, soda ash solution is added for defluorination. After defluorination, solid-liquid separation is performed. During solid-liquid separation, the mixture is extracted through an extraction tank, and then the solid oil phase and liquid water phase in the mixture are separated.

[0047] When using the extraction tank, firstly, the extract is introduced into the mixing chamber 9 inside the submerged chamber 1. The second motor 801 is then started, driving the stirring blades 802 to rotate, thus making the extract more evenly mixed. The stirred mixture enters the phase separation chamber 2 through the outlet 10. After passing through the first filter screen 502 to remove larger impurities, it enters the middle section of the phase separation chamber 2, and then passes through the second filter screen 503 before entering the clarification chamber 11 for clarification and phase separation. When the first filter screen 502 and the second filter screen 503 need to be replaced after prolonged use, the pusher block 506 can be pushed, causing the limiter to move. When the positioning block 505 slides, the second spring 507 is compressed, and the limiting block 505 is no longer engaged with the limiting groove 504 on the mounting frame 501. At this time, the mounting frame 501 can be pulled out from the phase separation chamber 2 through the handle on the mounting frame 501, and then the second filter screen 503 and the first filter screen 502 can be replaced. When the push block 506 slides to a certain position, the pin 510 on the mounting block 509 can be inserted into the positioning hole 508 on the push block 506, thereby avoiding the need to hold the push block 506 continuously when disassembling the mounting frame 501. The setting of the first sealing gasket 511 improves the sealing between the mounting frame 501 and the phase separation chamber 2.

[0048] Then, when the mixture flows from the outlet 10 to the first filter screen 502, the first motor 601 is started. The first motor 601 drives the connecting shaft 602 to rotate. The rotation of the connecting shaft 602 drives the first gear 603 to rotate. The rotation of the first gear 603 drives the second gear 604 to rotate. The rotation of the second gear 604 drives the rotating shaft 605 to rotate. The rotation of the rotating shaft 605 drives the impeller 606 on one side of the first filter screen 502 to rotate, thereby stirring up the impurities in the mixture passing through the first filter screen 502 and preventing the impurities from clogging the first filter screen 502.

[0049] Afterwards, when the mixed liquid inside the phase separation chamber 2 passes through the clarification chamber 11, it completes the phase separation, separating the mixture into an aqueous phase and an organic phase. Finally, the aqueous and organic phases are discharged from the guide outlet 12. The organic and aqueous phases rise, and because the organic phase is lighter, it floats above the aqueous phase. The aqueous phase below flows vertically back into another cavity containing only the aqueous phase in the phase separation chamber 2 through the guide hole 309 on the guide block 308, and is finally drawn away by the aqueous phase return pipe 13. The organic phase will continue to float on the water surface and will not sink into the guide hole 309. Therefore, when the organic phase is increasingly obstructed and accumulated by the lifting plate 306, the first hydraulic rod 301 can be activated. The first hydraulic rod 301 extends, causing the push plate 302 to slide. The push plate 302 causes the lifting plate 306 to slide together. When the lifting plate 306 contacts the side wall of the phase separation chamber 2, the second hydraulic rod 305 can be activated. The second hydraulic rod 305 retracts, and then... The lifting plate 306 is raised, lifting the organic phase on it. At this time, the first hydraulic rod 301 is activated, which moves the push plate 302 and the lifting plate 306 together to the top of the collection structure 4. The nozzle 311 on the mounting frame 310 is activated, and the organic phase on the lifting plate 306 is flushed into the inside of the collection structure 4 by the water flow. After flushing, the first hydraulic rod 301 is retracted to the initial position, and then the second hydraulic rod 305 is extended, which in turn moves the lifting plate 306 down into the inside of the water phase. During the operation, a small amount of newly generated organic phase will float back to the top of the lifting plate 306 under the action of buoyancy. When too much organic phase accumulates, the above operation can be repeated to scrape off the organic phase in the water phase. The setting of the fixing block 303 and the guide rod 304 improves the stability of the push plate 302 when sliding, and the setting of the guide column 307 improves the stability of the lifting plate 306 when sliding.

[0050] Secondly, the scraped organic phase is flushed into the collection tank 401 at the bottom by the water flow from the nozzle 311. When the collection tank 401 is full, the pedal 402 can be stepped on, which will cause the locking block 403 to disengage from the slot 404. At this time, the collection tank 401 can be pulled, which will separate the insert block 405 from the slot 406, and then the collection tank 401 can be pushed away. When replacing the collection tank 401, the slot 406 can be aligned with the insert block 405 on one side of the phase separation chamber 2. Both the end of the locking block 403 and the end of the insertion block 405 are trapezoidal. Therefore, when inserted, the locking block 403 will descend first, and the first spring 408 will retract. When the position of the slot 404 slides above the locking block 403, under the reset action of the first spring 408, the locking block 403 will re-lock into the slot 404, thereby fixing the collection box 401 to one side of the phase separation chamber 2. The guide shaft 407 prevents the first spring 408 from deviating and improves the stability of the sliding of the pedal 402.

[0051] Finally, after using the phase separation chamber 2 to extract the mixture for a period of time, due to the weight of the impurities, they will fall into the collection box 701 next to the first filter screen 502. After long-term use, the accumulated impurities will increase. At this time, the valve of the drain pipe on the side of the phase separation chamber 2 can be opened and the valve of the inlet pipe on the side of the submersible chamber 1 can be closed to drain the mixture inside the phase separation chamber 2. Then, the screw 705 on the fixing bar 704 can be rotated. The screw 705 will drive the slider 706 to slide upward. The slider 706 will no longer be in contact with the stop block 703. At this time, the stop block 703 can be used to remove the impurities. 3. The groove at the bottom is used to pull out the collection box 701 and clean the impurities accumulated inside the collection box 701. When installing the collection box 701, the rotating screw 705 drives the slider 706 to slide down and continuously abut against the abutment block 703 on the collection box 701. The abutment block 703 has a trapezoidal cross section. The slider 706 continues to descend and the abutment block 703 becomes stronger, which will cause the collection box 701 to continuously abut against the second sealing gasket 702, making the sealing effect better. After cleaning, close the valve of the drain pipe and open the valve of the inlet pipe to continue the extraction and phase separation work.

[0052] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0053] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A solid-liquid separation device for a lithium-ion battery membrane extraction tank, characterized in that, include: Submersible (1); Phase separation chamber (2), one side of the submersible chamber (1) is connected to the phase separation chamber (2); A mixing chamber (9) is provided inside the submersible chamber (1); Clarification chamber (11), the phase separation chamber (2) is provided with clarification chamber (11); The mixing chamber (9) and the phase separation chamber (2) are connected through the outlet (10); A flow outlet (12) is provided on the clarification chamber (11). A water phase return pipe (13) is provided on the phase separation chamber (2); The mixing chamber (9) is provided with a stirring structure (8). The stirring structure (8) includes a stirring blade (802). The mixing chamber (9) is provided with a stirring blade (802). The stirring blade (802) is fixedly connected to the output end of a second motor (801). The second motor (801) is fixed on the submerged chamber (1). The separation structure (3) includes a diversion block (308). The diversion block (308) is fixedly connected to the phase separation chamber (2). The diversion block (308) is provided with a diversion hole (309) with an L-shaped cross section. The phase separation chamber (2) is fixedly connected to a first hydraulic rod (301). The telescopic end of the first hydraulic rod (301) is fixedly connected to a push plate (302). The push plate (302) is fixedly connected to a second hydraulic rod (305). The telescopic end of the second hydraulic rod (305) is fixedly connected to a lifting plate (306) with an L-shaped cross section. The lifting plate (306) is slidably connected to the push plate (302). The push plate (302) is fixedly connected to two guide columns (307). The guide columns (307) are slidably connected to the lifting plate (306). The lifting plate (306) is slidably connected to the phase separation chamber (2). The filter structure (5) is provided on the phase separation chamber (2); The phase separation chamber (2) is provided with a collection structure (4) on the side away from the submersible chamber (1). The collection structure (4) includes a collection box (401). The collection box (401) is detachably connected to one side of the phase separation chamber (2). A pedal (402) is slidably connected to the collection box (401). A locking block (403) is fixedly connected to the pedal (402). The locking block (403) is slidably connected to the collection box (401). The locking block (403) is slidably connected to the inside of the locking slot (404). The locking slot (404) is located on the insert block (405). The insert block (405) is fixedly connected to the phase separation chamber (2). The insert block (405) is slidably connected to the slot (406). The slot (406) is located on the collection box (401). The collection box (401) is provided with two guide shafts (407), the pedal (402) is slidably connected to the guide shafts (407), the outside of the guide shafts (407) is provided with a first spring (408), and the pedal (402) is fixedly connected to the collection box (401). The filter structure (5) includes a mounting frame (501). Two mounting frames (501) are slidably connected to the phase separation chamber (2). A first filter screen (502) with a circular cross-section is fixedly connected to one mounting frame (501), and a second filter screen (503) with a rectangular cross-section is fixedly connected to the other mounting frame (501). A first sealing gasket (511) is held between the mounting frame (501) and the phase separation chamber (2). A limiting groove (504) is provided on the mounting frame (501). A limiting block (505) is slidably connected inside the limiting groove (504). The limiting block (505) is slidably connected to the phase separation chamber (2). A second spring (507) is fixedly connected between the limiting block (505) and the phase separation chamber (2). A push block (506) is provided on the limiting block (505). The submersible chamber (1) is provided with an anti-blocking structure (6), which includes a first motor (601). The first motor (601) is fixedly connected to the submersible chamber (1). The output end of the first motor (601) is fixedly connected to a connecting shaft (602). The connecting shaft (602) is rotatably connected to the submersible chamber (1). The end of the connecting shaft (602) is fixedly connected to a first gear (603). A second gear (604) meshes with one side of the first gear (603). The first gear (603) and the second gear (604) are both helical gears. A rotating shaft (605) is fixedly connected to the second gear (604). The rotating shaft (605) is perpendicular to the direction of the connecting shaft (602). The rotating shaft (605) is rotatably connected to the submersible chamber (1) and rotatably connected to the phase separation chamber (2). An impeller (606) is fixedly connected to the rotating shaft (605). The impeller (606) abuts against the first filter screen (502).

2. The solid-liquid separation device for a lithium-ion battery membrane extraction tank according to claim 1, characterized in that: A fixing block (303) is fixedly connected to the phase separation chamber (2), and a guide rod (304) is slidably connected to the fixing block (303). One end of the guide rod (304) is fixedly connected to the push plate (302).

3. The solid-liquid separation device for a lithium-ion battery membrane extraction tank according to claim 1, characterized in that: The phase separation chamber (2) is provided with a mounting bracket (310), and the mounting bracket (310) is provided with a nozzle (311).

4. The solid-liquid separation device for a lithium-ion battery membrane extraction tank according to claim 1, characterized in that: The push block (506) is provided with a positioning hole (508), and the phase separation chamber (2) is fixedly connected with an installation block (509). The installation block (509) is slidably connected with a pin (510), and the pin (510) is slidably connected to the positioning hole (508).

5. The solid-liquid separation device for a lithium-ion battery membrane extraction tank according to claim 1, characterized in that: The phase separation chamber (2) is provided with a cleaning structure (7), which includes a collection box (701). The collection box (701) is slidably connected to the phase separation chamber (2). A second sealing gasket (702) is sandwiched between the collection box (701) and the phase separation chamber (2). A trapezoidal abutment (703) is fixedly connected to the collection box (701). A fixing strip (704) is fixedly connected to the phase separation chamber (2). A screw (705) is rotatably connected to the fixing strip (704). A slider (706) is threadedly connected to the screw (705). The slider (706) is slidably connected to the fixing strip (704). The slider (706) abuts against the abutment (703).

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