A harmless treatment device for lithium battery recycling wastewater

Abstract

The present application relates to lithium battery recycling environmental protection water treatment equipment technical field, specifically to a kind of lithium battery recycling wastewater innocuous treatment device, including first shell, the first shell inner side wall is rotatably connected with support disc, the first shell side wall is equipped with the processing mechanism for treating wastewater, the processing mechanism includes four cylinder bodies that the first shell inner side wall bottom end is fixedly connected, four the cylinder body top is equipped with first umbrella cover, the support disc inner side wall is fixedly connected with four cylinder bodies outer side wall, a kind of lithium battery recycling wastewater innocuous treatment device in the application, setting rotatable support disc carries multiple groups of cylinder bodies, relies on first motor drive to realize station automatic switching, four groups of resin column can alternately complete adsorption, washing, elution, regeneration process, without whole machine downtime operation, guarantee production line continuous operation.

Description

Technical Field

[0001] This invention relates to the field of environmentally friendly water treatment equipment for lithium battery recycling, and particularly to a device for harmless treatment of wastewater from lithium battery recycling. Background Technology

[0002] With the scale of retired new energy power batteries increasing year by year, the wet recycling industry of waste lithium batteries is expanding rapidly. The battery dismantling, acid leaching and cleaning processes will continuously generate a large amount of complex wastewater. The wastewater is rich in pollutants such as lithium, nickel, cobalt, manganese heavy metals, fluoride ions, electrolyte organic solvents, colloidal flocs and so on. Direct discharge will cause water and soil heavy metal pollution. At the same time, a large amount of dissolved lithium resources are lost in the wastewater, resulting in serious resource waste.

[0003] The existing single-resin lithium extraction equipment on the market has a simple structure and low degree of automation, making it unsuitable for use in continuous lithium battery recycling production lines. The specific pain points are as follows: Most existing lithium battery recycling wastewater treatment and lithium recycling equipment directly connects to raw water without a pre-treatment process for heavy metal precipitation. Nickel, cobalt, and manganese colloidal flocs in the wastewater directly enter the resin column, easily clogging the resin particle pores and damaging the manganese-based ion sieve lattice, causing irreversible resin poisoning and failure, significantly shortening the resin's cycle life. Secondly, the equipment lacks an internal and external bidirectional automatic rinsing mechanism; fluorine residue and heavy metal flocs accumulated on the resin surface and at the bottom of the cylinder can only be manually removed and cleaned after stopping the machine, a cumbersome process. Furthermore, existing lithium extraction devices are mostly single-column intermittent structures; after resin adsorption saturation, the entire machine must be shut down before water washing, acid washing, and regeneration processes can be carried out, making it impossible to achieve simultaneous parallel adsorption and elution operations. The lack of a multi-station rotary switching mechanism prevents multiple cylinders from alternating and cyclically operating, resulting in poor lithium recycling continuity, significant lithium resource loss, and low recycling efficiency. To address these problems, we propose a harmless treatment device for lithium battery recycling wastewater. Summary of the Invention

[0004] The main objective of this invention is to provide a device for the harmless treatment of lithium battery recycling wastewater, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A device for harmlessly treating wastewater from lithium battery recycling includes a first housing. A support plate is rotatably connected to the inner side wall of the first housing. A treatment mechanism for treating wastewater is provided on the side wall of the first housing. The treatment mechanism includes four cylinders fixedly connected to the bottom of the inner side wall of the first housing. A first umbrella cover is provided at the top of each of the four cylinders. The inner side wall of the support plate is fixedly connected to the outer side wall of the four cylinders. A second umbrella cover is fixedly connected to the inner side wall of the first umbrella cover. A resin column is provided at the bottom of the second umbrella cover. A guide mechanism for introducing and exporting liquid is provided at the bottom of the first housing.

[0006] Preferably, a rotating plate is rotatably connected to the bottom end of the inner sidewall of the cylinder, the top end of the rotating plate is fixedly connected to the bottom end of the resin column, a cleaning shell is rotatably connected to the inner sidewall of the cylinder, a first toothed ring is provided on the outer sidewall of the cleaning shell, a third gear is rotatably connected to the outer sidewall of the cylinder, the outer sidewall of the third gear penetrates the sidewall of the cylinder and meshes with the outer sidewall of the first toothed ring, and a plurality of first spray holes are provided on the inner sidewall of the cleaning shell.

[0007] Preferably, the top of the rotating plate is provided with a plurality of driven plates, the outer wall of the driven plates is slidably connected to a sleeve, the outer wall of the sleeve is provided with a plurality of second injection holes, the top of the sleeve is rotatably connected to a first reciprocating threaded rod, the inner wall of the second umbrella cover is fixedly connected to a fixing plate, the first reciprocating threaded rod is rotatably connected to the fixing plate, the top of the first reciprocating threaded rod is rotatably connected to a guide plate, the top of the guide plate is provided with a second elastic component, and the other end of the second elastic component is fixedly connected to the inner wall of the second umbrella cover.

[0008] Preferably, the side wall of the cleaning shell is provided with a support block, the side wall of the support block is rotatably connected to the side wall of the second umbrella cover, the inner side wall of the support block is rotatably connected to a fifth gear, the outer side wall of the fifth gear is driven by a transmission chain connected to the outer side wall of the gear rod, the bottom end of the fifth gear is provided with a sweeping rod, the bottom end of the sweeping rod is rotatably connected to a cleaning block, and the outer side wall of the cleaning block is slidably connected to the bottom end of the inner side wall of the first shell.

[0009] Preferably, the inner wall of the cleaning shell is provided with a baffle, the bottom end of the baffle is provided with multiple liquid sensors, the top end of the baffle is rotatably connected with a gear rod, the inner wall of the cylinder is provided with a second gear ring, the outer wall of the gear rod is provided with a fourth gear, the outer wall of the fourth gear meshes with the outer wall of the second gear ring, the bottom end of the first shell and the cylinder are provided with a feed hole, the inner wall of the rotating plate is provided with a connecting pipe, one end of the connecting pipe is connected to the feed hole, and the other end of the connecting pipe passes through the cleaning block and is fixedly connected to the side wall of the cleaning shell.

[0010] Preferably, a second motor is fixedly connected to the outer wall of the first housing, a second gear is provided at the output end of the second motor, a first umbrella cover is rotatably connected to the outer wall of the first housing, the outer wall of the second gear meshes with the outer wall of the bidirectional gear ring, three slots are opened on the side wall of the first housing, and a sixth gear is rotatably connected to the inner wall of the slot, the outer wall of the sixth gear meshes with the inner wall of the bidirectional gear ring, and the outer walls of the plurality of sixth gears respectively mesh with the outer walls of the plurality of third gears.

[0011] Preferably, the top of the second umbrella cover has a slot, and the bottom of the slot has a first elastic component. The top of the first elastic component is rotatably connected to a protruding post. The protruding end of the protruding post is slidably connected to the inner sidewall of the chute. The outer sidewall of the protruding post is provided with blades. The bottom of the first housing has multiple discharge slots.

[0012] Preferably, the guiding mechanism includes a second housing fixedly connected to the bottom end of a first housing, a third motor fixedly connected to the bottom end of the first housing, a second reciprocating threaded rod provided at the output end of the third motor, the other end of the second reciprocating threaded rod being rotatably connected to the bottom end of the first housing, a connecting frame being rotatably connected to the outer wall of the second reciprocating threaded rod, and four sliding plates provided at the top end of the connecting frame, the four sliding plates being slidably connected to the bottom end of the first housing.

[0013] Preferably, the outer side wall of the connecting frame is provided with four lifting plates, each of the four lifting plates has a blocking plate at its top and a first feeding pipe at its top. The other end of the first feeding pipe is provided with a telescopic feeding pipe. The outer side wall of the telescopic feeding pipe is fixedly connected to the side wall of the second housing. The bottom end of the inner side wall of the second housing is provided with four compartments. The four side walls of the connecting frame are slidably connected to the slots opened on the side walls of the compartments.

[0014] Preferably, a first motor is provided on the side wall of the first housing, a first gear is provided at the output end of the first motor, the outer side wall of the first gear penetrates the first housing and meshes with the outer side wall of the support plate, a cover plate is detachably connected to the top of the first housing, a sliding groove is provided on the bottom side wall of the cover plate, a rotating ring is rotatably connected to the bottom of the cover plate, a feed pipe is provided at the top of the cover plate, and a valve is provided on the inner side wall of the feed pipe.

[0015] Compared with the prior art, the present invention has the following beneficial effects: This lithium battery recycling wastewater harmless treatment device features a rotatable support plate housing multiple cylinders. Driven by a first motor, it automatically switches workstations. Four resin columns alternately complete adsorption, washing, elution, and regeneration processes without requiring machine shutdown, ensuring continuous production line operation. The equipment is equipped with an internal and external double-layer spray rinsing structure. The first spray hole on the outer side of the cleaning shell and the second spray hole on the sleeve work together to achieve all-round rinsing of the resin columns. Combined with a bottom cleaning rod and cleaning block, it automatically scrapes away deposited flocculent material, eliminating the need for manual disassembly and cleaning. Simultaneously, a liquid sensor at the baffle monitors water quality in real time, intelligently adjusting the rinsing time and flow rate to prevent impurity residue or trace lithium loss. A reciprocating threaded rod and a second elastic component work together to buffer vibrations in the spray mechanism. The overall gear linkage transmission ensures stable operation. The guiding mechanism automatically controls the opening and closing of the discharge chute through a motor, reciprocating threaded rod, and linked blocking plate. Various liquids are zoned for diversion and collection, significantly reducing manual operation and equipment maintenance costs. This lithium battery recycling wastewater harmless treatment device extracts lithium from the supernatant wastewater after heavy metal precipitation, avoiding nickel, cobalt, and manganese flocs from entering the resin and causing lattice poisoning, effectively extending the service life of modified manganese-based resin. The produced lithium-rich liquid has low impurity content and can be directly processed into battery-grade lithium salts. The rinsing wastewater and regeneration wastewater generated throughout the process can be looped back to the front-end treatment unit without increasing the amount of sewage discharged, reducing the salt load on the downstream membrane desalination equipment. The whole device integrates wastewater purification and lithium resource recovery, eliminating the need for two separate sets of equipment, reducing land occupation and civil engineering investment. Multi-station cyclic operation greatly improves lithium recovery efficiency. While achieving harmless treatment of lithium battery wastewater to meet standards, it also completes efficient resource recovery of lithium resources, resulting in significant comprehensive economic benefits and environmental protection effects. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic cross-sectional view of the overall structure of the present invention; Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle; Figure 4 For the present invention Figure 2 Enlarged view of point B in the middle; Figure 5 For the present invention Figure 2 Enlarged view of point C in the middle; Figure 6 This is a partial cross-sectional view of the present invention; Figure 7 This is a partial cross-sectional view of the processing mechanism of the present invention; Figure 8 This is a partial cross-sectional view of the guiding mechanism of the present invention.

[0017] In the diagram: 1. First housing; 2. Processing mechanism; 3. Guiding mechanism; 12. First motor; 13. First gear; 14. Support plate; 15. Rotating ring; 16. Feed pipe; 17. Valve; 18. Cover plate; 19. Slide groove; 21. Second motor; 22. Second gear; 23. First umbrella cover; 24. Cylinder; 25. Third gear; 26. First gear ring; 27. Cleaning shell; 28. First spray hole; 29. ​​Baffle; 210. Liquid sensor; 211. Gear rod; 212. Second gear ring; 213. Fourth gear; 214. Transmission chain; 215. Fifth gear; 216. Cleaning rod; 217. Support block; 218. First elastic component; 21 9. Protruding column; 220. Blade; 221. Second umbrella cover; 222. Cleaning block; 223. Rotating plate; 224. Driven plate; 225. Sleeve; 226. Second spray hole; 227. Connecting pipe; 228. Resin column; 229. Discharge chute; 230. First reciprocating threaded rod; 231. Fixing plate; 232. Guide plate; 233. Second elastic component; 234. Feed hole; 235. Bidirectional toothed ring; 236. Sixth gear; 31. Second housing; 32. Chamber; 33. Third motor; 34. Second reciprocating threaded rod; 35. Connecting frame; 36. Sliding plate; 37. Lifting plate; 38. First feed pipe; 39. Blocking plate; 310. Telescopic feed pipe. Detailed Implementation

[0018] 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.

[0019] like Figure 1 - Figure 8 As shown, a harmless treatment device for lithium battery recycling wastewater includes a first housing 1. A support plate 14 is rotatably connected to the inner side wall of the first housing 1. A treatment mechanism 2 for treating wastewater is provided on the side wall of the first housing 1. The treatment mechanism 2 includes four cylinders 24 fixedly connected to the bottom end of the inner side wall of the first housing 1. A first umbrella cover 23 is provided at the top of each of the four cylinders 24. The inner side wall of the support plate 14 is fixedly connected to the outer side wall of the four cylinders 24. A second umbrella cover 221 is fixedly connected to the inner side wall of the first umbrella cover 23. A resin column 228 is provided at the bottom end of the second umbrella cover 221. A guide mechanism 3 for liquid introduction and export is provided at the bottom end of the first housing 1.

[0020] In this embodiment, a rotating plate 223 is rotatably connected to the bottom end of the inner wall of the cylinder 24. The top end of the rotating plate 223 is fixedly connected to the bottom end of the resin column 228. A cleaning shell 27 is rotatably connected to the inner wall of the cylinder 24. A first toothed ring 26 is provided on the outer wall of the cleaning shell 27. A third gear 25 is rotatably connected to the outer wall of the cylinder 24. The outer wall of the third gear 25 penetrates the side wall of the cylinder 24 and meshes with the outer wall of the first toothed ring 26. A plurality of first spray holes 28 are provided on the inner wall of the cleaning shell 27. A plurality of driven plates 224 are provided on the top end of the rotating plate 223. A sleeve 225 is slidably connected to the outer wall of the driven plate 224. A plurality of second spray holes 226 are provided on the outer wall of the sleeve 225. A first reciprocating threaded rod 230 is rotatably connected to the top end of the sleeve 225. A second umbrella cover 22... A fixing plate 231 is fixedly connected to the inner wall of the first reciprocating threaded rod 230. The first reciprocating threaded rod 230 is rotatably connected to the fixing plate 231. A guide plate 232 is rotatably connected to the top of the first reciprocating threaded rod 230. A second elastic component 233 is provided at the top of the guide plate 232. The other end of the second elastic component 233 is fixedly connected to the inner wall of the second umbrella cover 221. A support block 217 is provided on the side wall of the cleaning shell 27. The side wall of the support block 217 is rotatably connected to the side wall of the second umbrella cover 221. A fifth gear 215 is rotatably connected to the inner wall of the support block 217. A transmission chain 214 is drivingly connected to the outer wall of the gear rod 211. A sweeping rod 216 is provided at the bottom of the fifth gear 215. A cleaning block 222 is rotatably connected to the bottom of the sweeping rod 216. The outer wall of block 222 is slidably connected to the bottom end of the inner wall of the first housing 1. A baffle 29 is provided on the inner wall of the cleaning housing 27. Multiple liquid sensors 210 are provided at the bottom end of the baffle 29. A gear rod 211 is rotatably connected to the top end of the baffle 29. A second gear ring 212 is provided on the inner wall of the cylinder 24. A fourth gear 213 is provided on the outer wall of the gear rod 211. The outer wall of the fourth gear 213 meshes with the outer wall of the second gear ring 212. A feed hole 234 is opened at the bottom end of the first housing 1 and the cylinder 24. A connecting pipe 227 is provided on the inner wall of the rotating plate 223. One end of the connecting pipe 227 is connected to the feed hole 234, and the other end of the connecting pipe 227 passes through the cleaning block 222 and is fixedly connected to the side wall of the cleaning housing 27. A second motor is fixedly connected to the outer wall of the first housing 1. 21. A second gear 22 is provided at the output end of the second motor 21. A first umbrella cover 23 is rotatably connected to the outer wall of the first housing 1. The outer wall of the second gear 22 meshes with the outer wall of the bidirectional gear ring 235. Three slots are opened on the side wall of the first housing 1, and a sixth gear 236 is rotatably connected to the inner wall of the slot. The outer wall of the sixth gear 236 meshes with the inner wall of the bidirectional gear ring 235. The outer walls of multiple sixth gears 236 mesh with the outer walls of multiple third gears 25 respectively. A slot is opened at the top of the second umbrella cover 221, and a first elastic component 218 is provided at the bottom of the slot. A protruding post 219 is rotatably connected to the top of the first elastic component 218. The protruding end of the protruding post 219 is slidably connected to the inner wall of the sliding groove 19. A blade 220 is provided on the outer wall of the protruding post 219.The bottom end of the first housing 1 has multiple discharge slots 229.

[0021] Specifically, clean reused water is introduced into the feed hole 234 through the corresponding telescopic feed pipe 310 and the first feed pipe 38, and then transported to the sealed cavity inside the cleaning shell 27 through the connecting pipe 227 connected to the feed hole 234. Water is then evenly sprayed onto the outer surface of the resin column 228 through the first spray holes 28 densely distributed on the side wall of the cleaning shell 27. Simultaneously, the water enters the sleeve 225, and the clean reused water is flushed outwards from inside the resin column 228 through the second spray hole 226. Simultaneously, the second motor 21 is started, and its output drives the second gear 22 to rotate. The second gear 22 meshes with the outer wall of the bidirectional gear ring 235, causing the bidirectional gear ring 235 to rotate as a whole. The inner wall of the bidirectional gear ring 235 simultaneously meshes with multiple sixth gears 236. The outer wall of the sixth gear 236 meshes with the third gear 25 on the side wall of the cylinder 24. The third gear 25 penetrates the side wall of the cylinder 24 and meshes with the first gear ring 26 on the outer wall of the cleaning shell 27. The rotation of the cleaning shell 27 causes the support block 217 to rotate synchronously. The gear rod 211 meshes with the second gear ring 212 on the inner side wall of the cylinder 24 via the fourth gear 213 on the outer wall, thereby driving the gear rod 211 to rotate. Through the transmission chain 214 and the fifth gear 215, the cleaning rod 216 is driven to rotate. The cleaning block 222 is mounted at the lower end of the cleaning rod 216. The cleaning block 222 slides against the inner wall of the bottom of the first shell 1, continuously scraping away the fine fluorine residue and heavy metal colloidal deposits at the bottom of the shell, and discharging them from the discharge chute 229. The rotation of the rotating plate 223 drives the first reciprocating threaded rod 230 to rotate synchronously via the driven plate 224, thereby causing the first reciprocating threaded rod 230 to move up and down, pulling the sleeve 225 and the guide plate 232 to rise and fall synchronously. The elastic buffer generated by the second elastic component 233 offsets the vibration and impact generated by the reciprocating motion, thereby flushing the inside and outside of the resin column 228 in all directions.

[0022] In this embodiment, the guide mechanism 3 includes a second housing 31 fixedly connected to the bottom end of the first housing 1. A third motor 33 is fixedly connected to the bottom end of the first housing 1. A second reciprocating threaded rod 34 is provided at the output end of the third motor 33. The other end of the second reciprocating threaded rod 34 is rotatably connected to the bottom end of the first housing 1. A connecting frame 35 is rotatably connected to the outer wall of the second reciprocating threaded rod 34. Four sliding plates 36 are provided at the top of the connecting frame 35. The four sliding plates 36 are slidably connected to the bottom end of the first housing 1. Four lifting plates 37 are respectively provided on the outer wall of the connecting frame 35. A blocking plate 39 is provided at the top of each of the four lifting plates 37. A first feed pipe 38 is provided at the top of each of the four lifting plates 37. A telescopic feed pipe 310 is provided at the other end of the first feed pipe 38. The outer wall of the telescopic feed pipe 310 is fixedly connected to the side wall of the second housing 31. Four chambers 32 are provided at the bottom end of the inner side wall of the second housing 31. The side walls of the four connecting frames 35 are slidably connected to the slots opened on the side walls of the chambers 32.

[0023] Specifically, the third motor 33 in the start-up guide mechanism 3 is activated. The output end of the third motor 33 drives the second reciprocating threaded rod 34 to rotate continuously. The threaded connection frame 35 on the outer wall of the second reciprocating threaded rod 34 drives the connection frame 35 to move downward, thereby driving the blockage plate 39 to move downward, so that the low-lithium tail water after adsorption is discharged through multiple discharge troughs 229, and finally discharged to the external device through one of the chambers 32.

[0024] In this embodiment, a first motor 12 is provided on the side wall of the first housing 1, and a first gear 13 is provided at the output end of the first motor 12. The outer side wall of the first gear 13 penetrates the first housing 1 and meshes with the outer side wall of the support plate 14. A cover plate 18 is detachably connected to the top of the first housing 1. A sliding groove 19 is provided on the bottom side wall of the cover plate 18. A rotating ring 15 is rotatably connected to the bottom of the cover plate 18. A feed pipe 16 is provided at the top of the cover plate 18, and a valve 17 is provided on the inner side wall of the feed pipe 16.

[0025] Specifically, the first motor 12 is started, and the output end of the first motor 12 drives the first gear 13 to rotate continuously. The first gear 13 passes through the side wall of the first housing 1 and meshes with the outer wall of the support plate 14, thereby driving the support plate 14 and the rotating ring 15 to rotate slowly and uniformly. At the same time, the protrusion 219 slides inside the slide groove 19. The support plate 14 is fixedly connected to the outer walls of the four cylinders 24. When one of the cylinders 24, which rotates synchronously with the support plate 14, rotates to the position directly below the feed pipe 16, the first motor 12 is turned off, and the valve 17 at the feed pipe 16 is opened to continuously feed the supernatant wastewater from the lithium battery recycling process after the heavy metal sulfide precipitation process into this cylinder 24.

[0026] It should be noted that this invention is a device for the harmless treatment of lithium battery recycling wastewater. The user will start the first motor 12, and the output end of the first motor 12 will drive the first gear 13 to rotate continuously. The first gear 13 penetrates the side wall of the first housing 1 and meshes with the outer side wall of the support plate 14, thereby driving the support plate 14 and the rotating ring 15 to rotate slowly and uniformly. At the same time, the protrusion 219 slides inside the slide groove 19. The support plate 14 is fixedly connected to the outer side wall of the four cylinders 24. When one of the cylinders 24 that rotates synchronously with the support plate 14 rotates to directly below the feed pipe 16, the device is closed. The first motor 12 simultaneously opens the valve 17 at the feed pipe 16, continuously feeding the supernatant wastewater from the lithium battery recycling process after the heavy metal sulfide precipitation process into the cylinder 24. At this time, the third motor 33 is started, driving multiple blocking plates 39 to be embedded into multiple discharge slots 229 respectively. The protrusion 219 is not inside the slide 19, causing the first elastic component 218 to push the protrusion 219 upward, so that the protrusion 219 protrudes into the feed pipe 16. Furthermore, due to the impact of the wastewater, the multiple blades 220 fixed around the outer wall of the protrusion 219 rotate synchronously to prevent the feed from becoming blocked.

[0027] Wastewater flows downwards through the channel between the second umbrella cover 221 and the first umbrella cover 23, entering the space below the second umbrella cover 221. This fully wets the resin column 228 vertically arranged above the rotating plate 223. The resin column 228 is filled with modified manganese-based lithium adsorption resin. Free lithium ions in the wastewater are specifically captured and adsorbed by the resin due to their lattice chemical bonds. Trace amounts of residual nickel, cobalt, and manganese flocs and fluoride colloidal impurities are only physically attached to the surface of the resin particles and between the gaps. Multiple sets of liquid sensors 210 are installed at the bottom of the baffle 29 to monitor the wastewater level in real time. When the wastewater inside the cylinder 24 reaches its maximum volume, the valve 17 at the feed pipe 16 is closed. After the lithium adsorption operation is completed, the guide machine is started. The third motor 33 in structure 3 drives the second reciprocating threaded rod 34 to rotate continuously. The threaded connection frame 35 on the outer wall of the second reciprocating threaded rod 34 drives the connection frame 35 to move downward, thereby driving the blocking plate 39 to move downward, so that the low-lithium tail water after adsorption is discharged through multiple discharge troughs 229, and finally discharged to the external device through one of the chambers 32. After the discharge is completed, the first motor 12 is restarted, so that the support plate 14 drives the cylinder 24 after the lithium ion enrichment is completed to rotate to ninety degrees. Then the first motor 12 is turned off, and the third motor 33 is restarted, so that the blocking plate 39 is embedded in the discharge trough 229 again. At this time, the first feed pipe 38 is embedded in the feed hole 234.

[0028] Clean reused water is introduced into the feed hole 234 through the corresponding telescopic feed pipe 310 and the first feed pipe 38, and then transported to the sealed cavity inside the cleaning shell 27 through the connecting pipe 227 connected to the feed hole 234. Water is then evenly sprayed onto the outer surface of the resin column 228 through the densely distributed first spray holes 28 on the side wall of the cleaning shell 27. Simultaneously, the water enters the sleeve 225, and the clean reused water is flushed outward from the inside of the resin column 228 through the second spray hole 226. At the same time, the second motor 21 is started, and the output of the second motor 21 drives the second gear 22 to rotate. The second gear 22 meshes with the outer wall of the bidirectional gear ring 235, driving the bidirectional gear ring 235 to rotate as a whole. The inner side wall of the bidirectional gear ring 235 rotates synchronously with multiple... The sixth gear 236 meshes with the outer wall of the sixth gear 236, which in turn meshes with the third gear 25 on the side wall of the cylinder 24. The third gear 25 penetrates the side wall of the cylinder 24 and meshes with the first toothed ring 26 on the outer wall of the cleaning shell 27, ultimately causing the cleaning shell 27 to rotate circumferentially, thereby causing the support block 217 to rotate synchronously. The gear rod 211 meshes with the second toothed ring 212 on the inner wall of the cylinder 24 via the fourth gear 213 on its outer wall, thereby causing the gear rod 211 to rotate. Through the transmission chain 214, it is driven by the fifth gear 215, thereby causing the sweeping rod 216 to rotate. The lower end of the sweeping rod 216 is equipped with a cleaning block 222, which slides against the inner wall of the bottom of the first housing 1 to continuously scrape away sediment. Fine fluorine residue and heavy metal colloidal precipitates accumulated at the bottom of the shell are discharged from the discharge trough 229. The rotation of the rotating plate 223 synchronously drives the first reciprocating threaded rod 230 to rotate via the driven plate 224, thereby causing the first reciprocating threaded rod 230 to move up and down, pulling the sleeve 225 and the guide plate 232 to rise and fall synchronously. The elastic buffer generated by the second elastic component 233 offsets the vibration and impact generated by the reciprocating motion, thereby flushing the inside and outside of the resin column 228 in all directions, thus removing the suspended matter attached to the resin surface, but without replacing the lithium ions already adsorbed and fixed inside the crystal lattice. After flushing for a period of time, the third motor 33 drives the second reciprocating threaded rod 34 to continue rotating, causing the connecting frame 35 to move downward. The sliding plate 36 slides and limits against the inner wall of the bottom of the first housing 1. The blocking plate 39 descends with the lifting plate 37 and connects and disconnects with the discharge chute 229. The rinsing wastewater carrying flocculent sludge generated by rinsing flows downward along the discharge chute 229 at the bottom of the cylinder 24 and flows into the second housing 31 at the bottom of the first housing 1. Finally, after the rinsing wastewater carrying flocculent sludge is completely discharged, the flow of clean reused water is stopped. After the discharge is completed, the first motor 12 is started again, so that the support plate 14 drives the cylinder 24, which has been cleaned of impurities, to rotate to ninety degrees. Then the first motor 12 is turned off, and the third motor 33 is started again, so that the blocking plate 39 is embedded in the discharge chute 229 again. At this time, the first feed pipe 38 is embedded in the feed hole 234.

[0029] Low-concentration dilute acid eluent is introduced into the feed hole 234 through the corresponding telescopic feed pipe 310 and the first feed pipe 38. The low-concentration dilute acid eluent is then evenly sprayed onto the outer surface of the resin column 228 through multiple first spray holes 28 and multiple second spray holes 226, ensuring full contact between the dilute acid solution and the resin particles, thereby improving the lithium ion elution efficiency and exchanging the lithium ions adsorbed inside the resin. Finally, the guide mechanism 3 is activated, and the above steps are repeated, causing a high-concentration lithium-rich enrichment solution to flow from the bottom of the resin column 228. This solution flows downwards along the discharge trough 229 at the bottom of the cylinder 24 and into the second housing 31 at the bottom of the first housing 1. After elution is complete, the first motor 12 is activated again, causing the support plate 14 to move the cylinder after impurity removal. The body 24 rotates to 90 degrees, then the first motor 12 is turned off, and the third motor 33 is restarted, causing the blocking plate 39 to be embedded in the discharge trough 229 again. At this time, the first feed pipe 38 is embedded in the feed hole 234. Finally, dilute alkali regeneration liquid is introduced into the feed hole 234 through the corresponding telescopic feed pipe 310 and the first feed pipe 38 to neutralize and repair the resin lattice and restore the resin adsorption capacity. Finally, the high-concentration lithium-rich eluent is collected and stored uniformly through the chamber 32 inside the guide mechanism 3. Finally, the above steps are repeated to automatically control and switch the adsorption, rinsing, elution and regeneration processes, solving the defects of intermittent shutdown and low lithium recovery efficiency of single-column equipment. The support plate 14 rotates continuously at low speed to ensure that the working conditions of the resin columns 228 inside the four sets of cylinders 24 are synchronized and balanced.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A device for harmless treatment of lithium battery recycling wastewater, comprising a first housing (1), characterized in that: The inner wall of the first housing (1) is rotatably connected to a support plate (14). The side wall of the first housing (1) is provided with a treatment mechanism (2) for treating wastewater. The treatment mechanism (2) includes four cylinders (24) fixedly connected to the bottom of the inner wall of the first housing (1). The top of each of the four cylinders (24) is provided with a first umbrella cover (23). The inner wall of the support plate (14) is fixedly connected to the outer wall of the four cylinders (24). The inner wall of the first umbrella cover (23) is fixedly connected to a second umbrella cover (221). The bottom of the second umbrella cover (221) is provided with a resin column (228). The bottom of the first housing (1) is provided with a guide mechanism (3) for introducing and exporting liquid.

2. The lithium battery recycling wastewater harmless treatment device according to claim 1, characterized in that: A rotating plate (223) is rotatably connected to the bottom of the inner wall of the cylinder (24). The top of the rotating plate (223) is fixedly connected to the bottom of the resin column (228). A cleaning shell (27) is rotatably connected to the inner wall of the cylinder (24). A first toothed ring (26) is provided on the outer wall of the cleaning shell (27). A third gear (25) is rotatably connected to the outer wall of the cylinder (24). The outer wall of the third gear (25) penetrates the side wall of the cylinder (24) and meshes with the outer wall of the first toothed ring (26). A plurality of first spray holes (28) are provided on the inner wall of the cleaning shell (27).

3. The lithium battery recycling wastewater harmless treatment device according to claim 2, characterized in that: The rotating plate (223) has a plurality of driven plates (224) at its top end. A sleeve (225) is slidably connected to the outer wall of the driven plate (224). A plurality of second injection holes (226) are provided on the outer wall of the sleeve (225). A first reciprocating threaded rod (230) is rotatably connected to the top end of the sleeve (225). A fixing plate (231) is fixedly connected to the inner wall of the second umbrella cover (221). The first reciprocating threaded rod (230) is rotatably connected to the fixing plate (231). A guide plate (232) is rotatably connected to the top end of the first reciprocating threaded rod (230). A second elastic component (233) is provided at the top end of the guide plate (232). The other end of the second elastic component (233) is fixedly connected to the inner wall of the second umbrella cover (221).

4. The lithium battery recycling wastewater harmless treatment device according to claim 2, characterized in that: The side wall of the cleaning shell (27) is provided with a support block (217), the side wall of the support block (217) is rotatably connected to the side wall of the second umbrella cover (221), the inner side wall of the support block (217) is rotatably connected to a fifth gear (215), the outer side wall of the fifth gear (215) is connected to the outer side wall of the gear rod (211) by a transmission chain (214), the bottom end of the fifth gear (215) is provided with a sweeping rod (216), the bottom end of the sweeping rod (216) is rotatably connected to a cleaning block (222), the outer side wall of the cleaning block (222) is slidably connected to the bottom end of the inner side wall of the first shell (1).

5. The lithium battery recycling wastewater harmless treatment device according to claim 2, characterized in that: The inner wall of the cleaning shell (27) is provided with a baffle (29), and the bottom end of the baffle (29) is provided with multiple liquid sensors (210). The top end of the baffle (29) is rotatably connected with a gear rod (211). The inner wall of the cylinder (24) is provided with a second gear ring (212). The outer wall of the gear rod (211) is provided with a fourth gear (213). The outer wall of the fourth gear (213) meshes with the outer wall of the second gear ring (212). The bottom end of the first shell (1) and the cylinder (24) are provided with a feed hole (234). The inner wall of the rotating plate (223) is provided with a connecting pipe (227). One end of the connecting pipe (227) is connected to the feed hole (234), and the other end of the connecting pipe (227) passes through the cleaning block (222) and is fixedly connected to the side wall of the cleaning shell (27).

6. The lithium battery recycling wastewater harmless treatment device according to claim 1, characterized in that: A second motor (21) is fixedly connected to the outer wall of the first housing (1). A second gear (22) is provided at the output end of the second motor (21). A first umbrella cover (23) is rotatably connected to the outer wall of the first housing (1). The outer wall of the second gear (22) meshes with the outer wall of the bidirectional gear ring (235). Three slots are opened on the side wall of the first housing (1), and a sixth gear (236) is rotatably connected to the inner wall of the slot. The outer wall of the sixth gear (236) meshes with the inner wall of the bidirectional gear ring (235). The outer walls of the multiple sixth gears (236) mesh with the outer walls of the multiple third gears (25).

7. The lithium battery recycling wastewater harmless treatment device according to claim 1, characterized in that: The second umbrella cover (221) has a slot at the top and a first elastic component (218) at the bottom of the slot. The top of the first elastic component (218) is rotatably connected to a protruding post (219). The protruding end of the protruding post (219) is slidably connected to the inner wall of the sliding groove (19). The outer wall of the protruding post (219) is provided with a blade (220). The bottom of the first housing (1) has multiple discharge slots (229).

8. The lithium battery recycling wastewater harmless treatment device according to claim 1, characterized in that: The guiding mechanism (3) includes a second housing (31) fixedly connected to the bottom of the first housing (1), a third motor (33) fixedly connected to the bottom of the first housing (1), a second reciprocating threaded rod (34) provided at the output end of the third motor (33), the other end of the second reciprocating threaded rod (34) being rotatably connected to the bottom of the first housing (1), a connecting frame (35) being rotatably connected to the outer wall of the second reciprocating threaded rod (34), and four sliding plates (36) provided at the top of the connecting frame (35), the four sliding plates (36) being slidably connected to the bottom of the first housing (1).

9. The lithium battery recycling wastewater harmless treatment device according to claim 8, characterized in that: The outer side wall of the connecting frame (35) is provided with four lifting plates (37), and the top of each of the four lifting plates (37) is provided with a blocking plate (39). The top of each of the four lifting plates (37) is provided with a first feed pipe (38). The other end of the first feed pipe (38) is provided with a telescopic feed pipe (310). The outer side wall of the telescopic feed pipe (310) is fixedly connected to the side wall of the second housing (31). The bottom of the inner side wall of the second housing (31) is provided with four compartments (32). The side walls of the four connecting frames (35) are slidably connected to the slots opened on the side walls of the compartments (32).

10. The lithium battery recycling wastewater harmless treatment device according to claim 1, characterized in that: The first housing (1) is provided with a first motor (12) on its side wall. The output end of the first motor (12) is provided with a first gear (13). The outer side wall of the first gear (13) passes through the first housing (1) and meshes with the outer side wall of the support plate (14). The top of the first housing (1) is detachably connected with a cover plate (18). The bottom side wall of the cover plate (18) is provided with a sliding groove (19). The bottom of the cover plate (18) is rotatably connected with a rotating ring (15). The top of the cover plate (18) is provided with a feed pipe (16). The inner side wall of the feed pipe (16) is provided with a valve (17).

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