A highly efficient stripping and sorting device for waste ternary lithium battery electrode materials

Abstract

The present invention relates to the technical field of recycling electrode materials of waste ternary lithium batteries, and specifically to an efficient stripping and sorting device for electrode materials of waste ternary lithium batteries, comprising a mounting frame, a stirring tank being arranged on the inner side of the mounting frame, a preprocessor being arranged on the top of the stirring tank, the output end of the preprocessor extending into the stirring tank, and the output end of the stirring tank being connected to a sorting component via a screw pump; a driving motor being fixedly mounted on the top of the preprocessor, the output end of the driving motor being transmission-connected to a reduction gearbox, and the output end of the reduction gearbox being transmission-connected to a rotating shaft; the disposal processes of cutting, conveying and mechanically stripping active substances are all completed in the preprocessor, without the need for secondary transfer, which can improve the stripping efficiency and avoid the problem of a large amount of active substances splashing during the mechanical stripping of the active substances, resulting in the inability to collect them.

Description

Technical Field

[0001] The present invention relates to the technical field of recycling waste ternary lithium battery electrode materials, and in particular to a device for efficiently stripping and sorting waste ternary lithium battery electrode materials. Background Art

[0002] With the rapid development of the new energy vehicle industry, the number of waste ternary lithium batteries has increased dramatically. Waste ternary lithium batteries are rich in valuable metals such as cobalt, nickel, and manganese, and their recycling is of great significance. However, there are many problems in the current stripping and sorting of electrode materials. Mechanical stripping has low efficiency, causes great damage to the material, and is prone to dust generation; although chemical stripping is effective, it consumes a lot of chemical reagents, causes serious pollution, and is costly;

[0003] In addition, the existing technology of stripping using organic solvent dissolution often has the problem of low dissolution efficiency. Therefore, some manufacturers will cut the whole electrode sheet into small pieces before putting it into the organic solvent tank. This method can effectively increase the contact area between the electrode sheet and the organic solvent, thereby quickly dissolving the corresponding binder and improving the dissolution efficiency. However, this method still has some problems:

[0004] For example, the electrode sheets of ternary lithium batteries are usually made of active materials, conductive agents, and binders coated on current collectors. The overall texture is soft. The aluminum foil (positive electrode) and copper foil (negative electrode) in the current collector are inherently flexible, and the mixed material layer such as the coated active material is not a hard material, which makes the electrode sheets have a certain degree of flexibility. During the battery manufacturing process, the electrode sheets need to undergo processes such as rolling. Although this will increase the density of the electrode sheets and make the structure more compact, it still retains a certain degree of softness, which is convenient for assembly processes such as winding or lamination. When the electrode sheets are dried and cured, the hardness will increase and the flexibility will decrease compared to the unprocessed raw materials, but overall they are still in a relatively soft state, which is inconvenient to cut. The electrode sheets need to be fixed and other operations, and the electrode sheets cannot be cut into smaller pieces in a short time. In addition, a large amount of active materials will also be peeled off from the current collector under the action of shear force during cutting, and workers need to collect this part of the peeled active materials. The overall stripping efficiency of waste ternary lithium battery electrode materials will not be significantly improved. Summary of the Invention

[0005] The purpose of the present invention is to provide a device for efficiently stripping and sorting waste ternary lithium battery electrode materials to solve the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a highly efficient stripping and sorting device for waste ternary lithium battery electrode materials, comprising a mounting frame, a stirring tank being mounted on the inner side of the mounting frame, a preprocessor being mounted on the top of the stirring tank, an output end of the preprocessor extending into the stirring tank, and the output end of the stirring tank being connected to a sorting component via a screw pump;

[0007] A driving motor is fixedly installed on the top of the preprocessor, and the output end of the driving motor is connected to the reduction gear box, and the output end of the reduction gear box is connected to the rotating shaft. The outer wall of the rotating shaft is provided with a feeding section, a stripping section, a preliminary cutting section, a secondary cutting section, and a breaking up section from top to bottom. A trumpet-shaped blowing head is provided inside the preprocessor, and the trumpet-shaped blowing head is covered at the upper half of the stripping section and the lower half of the feeding section. The top of the mixing tank is connected to an exhaust pipe.

[0008] Preferably, the feed section includes a mounting shaft 1, which is fixedly mounted on a rotating shaft. Three groups of tooth pressure plates 1 are arranged in a circumferential array on the outer wall of the mounting shaft 1, and the three groups of tooth pressure plates 1 are distributed in a spiral shape. The spiral direction of the tooth pressure plate 1 is consistent with the rotation direction of the rotating shaft. A bell mouth is provided at the top port of the preprocessor, and the upper half of the feed section is located in the bell mouth inside the preprocessor.

[0009] Preferably, the stripping section includes a second mounting shaft and a high-strength metal cylinder. The second mounting shaft is fixedly installed on the outer wall of the rotating shaft. A short hammer block and a long hammer block are fixedly installed on the outer wall of the second mounting shaft. Two groups of short hammer blocks are provided. The high-strength metal cylinder is fixedly installed on the inner wall of the preprocessor. The short hammer block and the long hammer block are both located in the high-strength metal cylinder. The short hammer block and the long hammer block are both tilted, and the tilt direction of the short hammer block and the long hammer block is the same as that of the tooth pressure plate. The side of the short hammer block is densely covered with grinding protrusions, and the grinding protrusions are integrally formed with the short hammer block.

[0010] Preferably, the preliminary cutting section includes a mounting shaft three, which is fixedly mounted on the outer wall of the rotating shaft, and a tooth pressure plate two and a cutting knife two are fixedly mounted on the outer wall of the mounting shaft three, and the tooth pressure plate two and the cutting knife two are arranged with an upper and a lower interval, and the tooth pressure plate two and the cutting knife two are arranged in a spiral manner, and the tooth pressure plate two has the same specifications as the tooth pressure plate one, and the sharpening direction of the cutting knife two is consistent with the rotation direction of the rotating shaft.

[0011] Preferably, the secondary cutting section includes an installation shaft four, which is fixedly installed on the outer wall of the rotating shaft. The outer wall of the installation shaft four is fixedly installed with a cutting knife three. The cutting knife three is provided in three groups, and the three groups of cutting knives three are arranged in a spiral shape. The specifications of the cutting knife three are the same as those of the cutting knife two.

[0012] Preferably, the scattering section includes an installation shaft five, which is fixedly mounted on the outer wall of the rotating shaft. The outer wall of the installation shaft five is fixedly mounted with scattering blades. There are multiple scattering blades, which are distributed in a circular array on the installation shaft five. The root position of the scattering blade is higher than the rest of the positions on the scattering blade.

[0013] Preferably, the sorting component includes a magnetic separation device, the mixed liquid output end of the magnetic separation device is connected to the input end of the electrostatic separation device through a diaphragm pump, and the mixed liquid output end of the electrostatic separation device is connected to the input end of the specific gravity separation device through a pipeline, and the outlets of the magnetic separation device, the electrostatic separation device, and the specific gravity separation device are all provided with material boxes for storing the corresponding solid substances sorted out.

[0014] Preferably, an industrial fan is fixedly installed on the mounting frame, the air outlet end of the industrial fan is connected to an air duct, the top end of the air duct is connected to an air channel, the air channel is connected to the air inlet end of the trumpet-shaped blowing head through a pulse blowing valve, the top end of the exhaust pipe is connected to a hose, and the end of the hose away from the exhaust pipe is connected to the air inlet end of the industrial air purifier.

[0015] Preferably, a heater is fixedly installed on the outer wall of the top end of the stirring tank, and the heating head of the heater extends into the stirring tank. A temperature sensor is fixedly installed on the outer wall of the stirring tank, and the detection end of the temperature sensor extends into the stirring tank. Three temperature sensors are provided and distributed at different positions of the stirring tank.

[0016] Preferably, a cutting bin 1 and a cutting bin 2 are fixedly installed on the inner wall of the preprocessor, the cutting bin 1 covers the outside of the primary cutting section, and the cutting bin 2 covers the outside of the secondary cutting section. The inner walls of the cutting bin 1 and the cutting bin 2 are both fixedly installed with a cutting knife 1, and the inclination direction of the cutting knife 1 is opposite to that of the cutting knife 2 and the cutting knife 3. A feed bin is fixedly installed on the top of the preprocessor, and the interior of the feed bin is connected with the interior of the preprocessor. A left feed roller, a right feed roller and an auxiliary guide roller are rotatably arranged in the feed bin, and the auxiliary guide roller is arranged below the right feed roller, and the right feed roller rotates in the opposite direction to the left feed roller and the auxiliary guide roller.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. When the electrode sheet passes through the stripping section, the initial cutting section, and the secondary cutting section, part of the active material on its surface will be removed by mechanical force, which increases the exposed part, allowing the organic solvent to better contact with the binder and then dissolve the binder, thereby improving the stripping efficiency of the active material of the current collector. Moreover, because the cutting, transportation and mechanical stripping of the active material are all carried out in the pre-processor, no secondary transfer is required. Under the premise of improving the stripping efficiency, it can also avoid the problem of a large amount of active material splashing during the mechanical stripping of the active material, which makes it impossible to collect;

[0019] 2. A trumpet-shaped air blowing head is provided for blowing air downwards, and the active material stripped by mechanical force is blown downwards by the downward airflow, thereby further preventing the active material from splashing outside the mixing tank and pre-processor;

[0020] 3. Cutting knife 1 is used to assist cutting knife 2 and cutting knife 3 in cutting the electrode sheets, ensuring that the electrode sheets can be cut into smaller blocks. The electrode sheets are transported to the pre-processor through the rotating left and right feeding rollers. There is no need for workers to manually insert one end of the electrode sheet into the bell mouth. When the electrode sheet contacts the auxiliary guide roller, the auxiliary guide roller can push the electrode sheet to move into the pre-processor, which can effectively prevent a large number of electrode sheets from accumulating in the feed bin. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 For the present invention Figure 1 A schematic diagram of the structure from the back view;

[0023] Figure 3 This is a schematic structural diagram of the stirring tank and pre-processor of the present invention;

[0024] Figure 4 Schematic diagram of the structure of the preprocessor of the present invention;

[0025] Figure 5 It is a structural schematic diagram of a front cross-sectional view of a preprocessor of the present invention;

[0026] Figure 6 Schematic diagram of the decomposition of the preprocessor and its internal structure of the present invention;

[0027] Figure 7 This is a structural diagram of the mounting shaft 1, the tooth pressure plate 1, the mounting shaft 2, the short hammering block and the long hammering block of the present invention;

[0028] Figure 8 This is a structural diagram of the present invention's mounting shaft three, tooth pressure plate two, cutting knife two, mounting shaft four, cutting knife three, mounting shaft five and scattering blades;

[0029] Figure 9 This is a schematic structural diagram of a front cross-sectional view of the cutting chamber 1 and the cutting chamber 2 of the present invention;

[0030] Figure 10 This is a schematic diagram of the internal structure of the feed bin of the present invention;

[0031] Figure 11 It is a structural schematic diagram of the heater and heating head of the present invention.

[0032] In the accompanying drawings, the components represented by the reference numerals are as follows: 1. Mounting frame; 2. Mixing tank; 3. Preprocessor; 4. Drive motor; 5. Reduction gearbox; 6. Rotating shaft; 7. Feeding section; 8. Peeling section; 9. Primary cutting section; 10. Secondary cutting section; 11. Scattering section; 12. Cutting chamber 1; 13. Cutting chamber 2; 14. Cutting blade 1; 15. Mounting shaft 1; 16. Tooth pressure plate 1; 17. Mounting shaft 2; 18. Short hammer block; 19. Long hammer block; 20. High-strength metal cylinder; 21. Mounting shaft 3; 22. Tooth pressure plate 2; 23. Cutting blade 2; 24. Installation axis four; 25. Cutting knife three; 26. Installation axis five; 27. Scattering blades; 28. Bell mouth; 29. ​​Trumpet-shaped air blowing head; 30. Air guide channel; 31. Pulse air blowing valve; 32. Air guide pipe; 33. Industrial fan; 34. Exhaust pipe; 35. Hose; 36. Feed bin; 37. Left feed roller; 38. Right feed roller; 39. Auxiliary guide roller; 40. Heater; 41. Heating head; 42. Temperature sensor; 43. Screw pump; 44. Magnetic separation device; 45. Diaphragm pump; 46. Electrostatic separation device; 47. Specific gravity separation device. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] The present invention provides a technical solution: Figures 1-11 The device for efficiently stripping and sorting waste ternary lithium battery electrode materials shown in the figure includes a mounting frame 1, a stirring tank 2 is mounted on the inner side of the mounting frame 1, a preprocessor 3 is mounted on the top of the stirring tank 2, and the output end of the preprocessor 3 extends into the stirring tank 2. The output end of the stirring tank 2 is connected to the sorting component via a screw pump 43;

[0035] A driving motor 4 is fixedly installed on the top of the preprocessor 3, and the output end of the driving motor 4 is transmission-connected to a reduction gear box 5, and the output end of the reduction gear box 5 is transmission-connected to a rotating shaft 6. The outer wall of the rotating shaft 6 is provided with a feeding section 7, a stripping section 8, a preliminary cutting section 9, a secondary cutting section 10, and a breaking up section 11 from top to bottom. A trumpet-shaped air blowing head 29 is provided inside the preprocessor 3, and the trumpet-shaped air blowing head 29 covers the upper half of the stripping section 8 and the lower half of the feeding section 7. The top of the mixing tank 2 is connected to an exhaust pipe 34, and the feeding section 7 includes a mounting shaft 15, and the mounting shaft 15 is fixedly mounted on the rotating shaft 6. The outer wall circumferential array of the mounting shaft 15 is provided with three groups of tooth pressure plates 16, and the three groups of tooth pressure plates 16 are spirally distributed. The tooth pressure plates 1 The spiral direction of 6 is consistent with the rotation direction of the rotating shaft 6. The top port of the pre-processor 3 is provided with a bell mouth 28. The upper half of the feed section 7 is located in the bell mouth 28 in the pre-processor 3. When the rotating shaft 6 drives the mounting shaft 15 to rotate, it can drive the three sets of tooth pressure plates 16 to rotate. After the electrode sheet contacts the rotating tooth pressure plate 16, the tooth pressure plate 16 will pull the electrode sheet into the pre-processor 3, and then press downward, using mechanical force to pull the electrode sheet to the stripping section 8. Because the upper half of the feed section 7 is located in the bell mouth 28, more electrode sheets can enter the bell mouth 28 first and contact the rotating tooth pressure plate 16. Then the tooth pressure plate 16 pulls the electrode sheet to the stripping section 8. The stripping section 8 includes the mounting shaft 17, a high-strength metal Cylinder 20, mounting shaft 2 17 is fixedly mounted on the outer wall of the rotating shaft 6, the outer wall of the mounting shaft 2 17 is fixedly mounted with a short hammer block 18 and a long hammer block 19, and two groups of short hammer blocks 18 are provided. The high-strength metal cylinder 20 is fixedly mounted on the inner wall of the pre-processor 3, and the short hammer block 18 and the long hammer block 19 are both located in the high-strength metal cylinder 20. The short hammer block 18 and the long hammer block 19 are both tilted, and the tilt direction of the short hammer block 18 and the long hammer block 19 is the same as that of the tooth pressure plate 16. The side of the short hammer block 18 is densely covered with grinding protrusions, and the grinding protrusions are integrally formed with the short hammer block 18. The rotating mounting shaft 2 17 is used to drive the short hammer block 18 and the long hammer block 19 to rotate. The short hammer block 18 is mainly used to hammer the electrode sheet downward, while the long hammer The block 19 is mainly used to hammer the electrode sheet onto the inner wall of the high-strength metal cylinder 20, and use mechanical force to peel off the current collector and active material. The peeled active material will directly slide from the pre-processor 3 into the mixing tank 2 without the need for additional collection, and it also avoids the problem of active material splashing and being unable to be collected. The grinding protrusions on the side of the short hammering block 18 can be used to scrape off the active material on the surface of the electrode sheet when hammering the electrode sheet. The preliminary cutting section 9 includes a mounting shaft 3 21, and the mounting shaft 3 21 is fixedly mounted on the outer wall of the rotating shaft 6. The outer wall of the mounting shaft 3 21 is fixedly mounted with a toothed pressure plate 22 and a cutting knife 23. The toothed pressure plate 22 and the cutting knife 23 are arranged at intervals of one above and one below, and the toothed pressure plate 22 and the cutting knife 23 are arranged in a spiral manner.The tooth pressure plate 22 is consistent with the specifications of the tooth pressure plate 16, and the sharpening direction of the cutting knife 23 is consistent with the rotation direction of the rotating shaft 6. The electrode sheet is pulled downward by the rotating tooth pressure plate 22. During the pulling process, the cutting knife 23 performs a preliminary cutting on the electrode sheet. In this step, the electrode sheet can be cut into strips and larger blocks. Because the cutting knife 23 is also set in a spiral shape, and the sharpening direction of the cutting knife 23 is consistent with the rotation direction of the rotating shaft 6, when the cutting knife 23 cuts the electrode sheet, the non-blade part can also push the electrode sheet downward when it contacts the electrode sheet. At the same time, when the blade contacts the electrode sheet, the active material on the electrode sheet is first scraped off, and the secondary cutting section 10 The embodiment includes a mounting shaft 24, which is fixedly mounted on the outer wall of the rotating shaft 6. A cutting knife 3 25 is fixedly mounted on the outer wall of the mounting shaft 24. The cutting knife 3 25 is provided in three groups, and the three groups of cutting knives 3 25 are arranged in a spiral arrangement. The specifications of the cutting knife 3 25 are the same as those of the cutting knife 2 23. The electrode sheet is cut into smaller blocks by the rotating cutting knife 3 25. The cut electrode sheet is then pushed downward by the spirally arranged cutting knife 3 25. The breaking up section 11 includes a mounting shaft 5 26, which is fixedly mounted on the outer wall of the rotating shaft 6. A breaking up blade 27 is fixedly mounted on the outer wall of the mounting shaft 5 26. The breaking up blade 27 is arranged There are multiple, and the circumferential array is distributed on the installation shaft five 26. The root position of the scattering blade 27 is higher than the rest of the position on the scattering blade 27. The rotating installation shaft five 26 is used to drive the scattering blade 27 to rotate. The rotation of the scattering blade 27 will scatter the electrode pieces that fall from the secondary cutting section 10 to the scattering blade 27, so that the electrode pieces can be dispersed and fall into the organic solvent in the stirring tank 2. Then, the stirring structure in the stirring tank 2 stirs the mixed solid and liquid of the organic solvent and the electrode material, accelerating the dissolution of the binder by the organic solvent. In addition, because the electrode pieces will be mechanically removed from the surface of the active material when passing through the stripping section 8, the preliminary cutting section 9, and the secondary cutting section 10, the electrode pieces will be mechanically removed from the surface of the active material when passing through the stripping section 8, the preliminary cutting section 9, and the secondary cutting section 10. The material increases its exposed part, so that the organic solvent can better contact with the binder and then dissolve the binder, thereby improving the stripping efficiency of the active material of the current collector. Moreover, because the cutting, transportation and mechanical stripping of the active material are all carried out in the preprocessor 3, no secondary transfer is required. Under the premise of improving the stripping efficiency, it can also avoid the problem that a large amount of active material splashes during the mechanical stripping of the active material, resulting in the inability to collect. A trumpet-shaped blowing head 29 is provided for blowing air downward, and the downward-flowing airflow is used to blow the active material that has been mechanically stripped downward, further avoiding the problem of active material splashing outside the stirring tank 2 and the preprocessor 3;

[0036] The separation component includes a magnetic separation device 44. The mixed liquid output end of the magnetic separation device 44 is connected to the input end of the electrostatic separation device 46 through a diaphragm pump 45. The mixed liquid output end of the electrostatic separation device 46 is connected to the input end of the specific gravity separation device 47 through a pipeline. The separation solid outlets of the magnetic separation device 44, the electrostatic separation device 46, and the specific gravity separation device 47 are all provided with material boxes. The mixed solid and liquid of the dissolved collector, active material and organic solvent are transported to the magnetic separation device 44 through the screw pump 43. The device 44 uses a high-gradient magnetic separator to absorb and separate the electrode materials containing magnetic materials. The remaining solid and liquid are then transported to the electrostatic separator 46 by the diaphragm pump 45. The surface charge difference of different electrode materials is used to separate the non-magnetic materials under the action of a high-voltage electric field. The remaining solid and liquid are then transported to the specific gravity separator 47. Based on the difference in specific gravity, they are further separated under the action of water flow. The electrode materials separated by the magnetic separator 44, the electrostatic separator 46, and the specific gravity separator 47 are then transported to the corresponding material bins.

[0037] An industrial fan 33 is fixedly installed on the mounting frame 1, and the air outlet end of the industrial fan 33 is connected to an air guide pipe 32, and the top of the air guide pipe 32 is connected to an air guide channel 30, and the air guide channel 30 is connected to the air inlet end of the trumpet-shaped air blowing head 29 through a pulse blowing valve 31, and the top of the exhaust pipe 34 is connected to a hose 35, and the end of the hose 35 away from the exhaust pipe 34 is connected to the air inlet end of the industrial air purifier. The industrial fan 33 generates an air flow, and the air flow is introduced into the air guide channel 30 by the air guide pipe 32, and the pulse blowing valve 31 is used to introduce the air flow into the trumpet-shaped air blowing head 29 in a set pulse manner, and then blown from the trumpet-shaped air blowing head 29 into the pre-processor 3, and the pulse air flow is used to blow the active material stripped by mechanical force, and the toxic gas generated by the reaction in the mixing tank 2 is discharged through the exhaust pipe 34, and the toxic gas is transported to the industrial air purifier by the hose 35, and the industrial air purifier purifies the gas;

[0038] A heater 40 is fixedly mounted on the outer wall of the top end of the stirring tank 2. A heating head 41 of the heater 40 extends into the stirring tank 2. A temperature sensor 42 is fixedly mounted on the outer wall of the stirring tank 2. The detection end of the temperature sensor 42 extends into the stirring tank 2. Three temperature sensors 42 are provided and are distributed at different positions of the stirring tank 2. The heater 40 operates to heat the heating head 41. After the heating head 41 is heated, the mixed solid and liquid in the stirring tank 2 is heated to ensure that the temperature of the mixed solid and liquid is within the optimal working temperature range of the organic solvent. The temperature sensor 42 is used to monitor the temperature at various locations to ensure accurate temperature control of the mixed solid and liquid.

[0039] The inner wall of the pre-processor 3 is fixedly installed with a cutting chamber 12 and a cutting chamber 2 13. The cutting chamber 12 is covered outside the preliminary cutting section 9, and the cutting chamber 2 13 is covered outside the secondary cutting section 10. The inner walls of the cutting chamber 12 and the cutting chamber 2 13 are fixedly installed with a cutting knife 14. The inclination direction of the cutting knife 14 is opposite to that of the cutting knife 2 23 and the cutting knife 3 25. A feed bin 36 is fixedly installed on the top of the pre-processor 3. The interior of the feed bin 36 is connected to the interior of the pre-processor 3. A left feed roller 37, a right feed roller 38, and an auxiliary guide roller 39 are rotatably provided in the feed bin 36. The auxiliary guide roller 39 is arranged below the right feed roller 38. The right feed roller 38 has a rotation direction opposite to that of the left feed roller 37 and the auxiliary guide roller 39. A cutting bin 12 and a cutting bin 2 13 are provided for installing a cutting knife 14. A cutting knife 14 is provided for assisting a cutting knife 2 23 and a cutting knife 3 25 in cutting the electrode sheets to ensure that the electrode sheets can be cut into smaller blocks. The electrode sheets are transported to the pre-processor 3 by the rotating left feed roller 37 and the right feed roller 38. There is no need for workers to manually insert one end of the electrode sheet into the bell mouth 28. When the electrode sheet contacts the auxiliary guide roller 39, the auxiliary guide roller 39 can push the electrode sheet to move into the pre-processor 3, which can effectively prevent a large number of electrode sheets from accumulating in the feed bin 36.

[0040] Working principle: first add the organic solvent into the stirring tank 2, where the choice of organic solvent varies according to the binder used for the electrode sheet. When the binder is polyvinylidene fluoride (PVDF), the organic solvent is N-methylpyrrolidone (NMP). When the binder is styrene-butadiene rubber (SBR), the organic solvent is toluene, xylene, cyclohexane and other non-polar solvents. Align one end of the electrode sheet with the gap between the left feed roller 37 and the right feed roller 38 and put it in. The left feed roller 37 and the right feed roller 38 rotate to bite the electrode sheet, and then convey the electrode sheet downward. When the electrode sheet contacts the auxiliary guide roller 39, the auxiliary guide roller 39 pushes the electrode sheet to move into the preprocessor 3. After the electrode sheet enters the bell mouth 28 in the preprocessor 3, the drive motor 4 is turned on to drive the reduction gearbox 5 to work, and then drive the rotating shaft 6 to rotate. The rotation of the rotating shaft 6 drives the installation shaft 15 and the installation shaft 2 17. The installation shaft 3 21, the installation shaft 4 24, and the installation shaft 5 26 rotate. When the installation shaft 15 rotates, it can drive the three sets of tooth pressure plates 16 to rotate. After the electrode sheet contacts the rotating tooth pressure plate 16, the tooth pressure plate 16 will pull the electrode sheet into the preprocessor 3, and then press it downward, using mechanical force to pull the electrode sheet to the stripping section 8. The rotating installation shaft 2 17 drives the short hammer block 18 and the long hammer block 19 to rotate. The short hammer block 18 is mainly used to hammer the electrode sheet downward, and the long hammer block 19 is mainly used to hammer the electrode sheet to the inner wall of the high-strength metal cylinder 20, using mechanical force to strip the current collector and active material. The rotating installation shaft 3 21 drives the tooth pressure plate 2 2 2. The cutting knife 23 rotates, and the rotating tooth pressure plate 22 pulls the electrode sheet downward. During the pulling process, the cutting knife 23 performs preliminary cutting on the electrode sheet. In this step, the electrode sheet can be cut into strips and larger blocks. The mounting shaft 4 24 drives the cutting knife 3 25 to rotate to cut the electrode sheet into smaller blocks. When the electrode sheet passes through the short hammer block 18, the long hammer block 19, the tooth pressure plate 22, the cutting knife 23, and the cutting knife 3 25, the active material on its surface will be peeled off under the action of mechanical force. Then the small pieces of electrode sheet and the peeled active material fall into the mixing tank 2. The mixing structure of the mixing tank 2 has its own mixing structure. The organic solvent and the electrode material are mixed. The solid and liquid are stirred to accelerate the dissolution of the binder by the organic solvent. After the dissolution is completed, the screw pump 43 is turned on to transport the mixed solid and liquid to the magnetic separation device 44. The magnetic separation device 44 uses a high-gradient magnetic separator to adsorb and separate electrode materials containing magnetic materials. Then the remaining solid and liquid are transported to the electrostatic separation device 46 by the diaphragm pump 45. The surface charge difference of different electrode materials is used to separate non-magnetic materials under the action of a high-voltage electric field. The remaining solid and liquid are transported to the specific gravity separation device 47 and further separated under the action of water flow according to the specific gravity difference. The electrode materials selected by the magnetic separation device 44, the electrostatic separation device 46, and the specific gravity separation device 47 are transported to the corresponding material box.

[0041] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0042] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A highly efficient stripping and sorting device for waste ternary lithium battery electrode materials, comprising a mounting frame (1), wherein a stirring tank (2) is provided on the inner side of the mounting frame (1), and characterized in that: A pre-processor (3) is installed on the top of the mixing tank (2), and the output end of the pre-processor (3) extends into the mixing tank (2). The output end of the mixing tank (2) is connected to the sorting component via a screw pump (43); A driving motor (4) is fixedly mounted on the top of the pre-processor (3), and the output end of the driving motor (4) is connected to a reduction gear box (5), and the output end of the reduction gear box (5) is connected to a rotating shaft (6). The outer wall of the rotating shaft (6) is provided with a feeding section (7), a stripping section (8), a preliminary cutting section (9), a secondary cutting section (10), and a breaking up section (11) in order from top to bottom. A trumpet-shaped air blowing head (29) is provided inside the pre-processor (3), and the blowing direction of the trumpet-shaped air blowing head (29) is from top to bottom. The trumpet-shaped air blowing head (29) covers the upper half of the stripping section (8) and the lower half of the feeding section (7). The top of the mixing tank (2) is connected to an exhaust pipe (34).

2. The efficient stripping and sorting device for waste ternary lithium battery electrode materials according to claim 1, characterized in that: The feed section (7) includes a mounting shaft (15), which is fixedly mounted on the rotating shaft (6). Three groups of tooth pressure plates (16) are arranged in a circumferential array on the outer wall of the mounting shaft (15), and the three groups of tooth pressure plates (16) are distributed in a spiral shape. The spiral direction of the tooth pressure plates (16) is consistent with the rotation direction of the rotating shaft (6). The top port of the pre-processor (3) is provided with a bell mouth (28), and the upper half of the feed section (7) is located in the bell mouth (28) in the pre-processor (3).

3. The efficient stripping and sorting device for waste ternary lithium battery electrode materials according to claim 1 is characterized in that: The stripping section (8) includes a second mounting shaft (17) and a high-strength metal cylinder (20). The second mounting shaft (17) is fixedly mounted on the outer wall of the rotating shaft (6). A short hammer block (18) and a long hammer block (19) are fixedly mounted on the outer wall of the second mounting shaft (17). Two groups of the short hammer blocks (18) are provided. The high-strength metal cylinder (20) is fixedly mounted on the inner wall of the pre-processor (3). The short hammer blocks (18) and the long hammer blocks (19) are both located in the high-strength metal cylinder (20). The short hammer blocks (18) and the long hammer blocks (19) are both tilted, and the tilting directions of the short hammer blocks (18) and the long hammer blocks (19) are the same as those of the tooth pressure plate (16). The side of the short hammer block (18) is densely covered with grinding protrusions, and the grinding protrusions are integrally formed with the short hammer block (18).

4. The efficient stripping and sorting device for waste ternary lithium battery electrode materials according to claim 1, characterized in that: The preliminary cutting section (9) includes a mounting shaft three (21), the mounting shaft three (21) is fixedly mounted on the outer wall of the rotating shaft (6), and the outer wall of the mounting shaft three (21) is fixedly mounted with a tooth pressure plate two (22) and a cutting knife two (23), the tooth pressure plate two (22) and the cutting knife two (23) are arranged with an upper and a lower spacing, the tooth pressure plate two (22) and the cutting knife two (23) are arranged in a spiral, the tooth pressure plate two (22) is consistent with the tooth pressure plate one (16) in specifications, and the cutting direction of the cutting knife two (23) is consistent with the rotation direction of the rotating shaft (6).

5. The efficient stripping and sorting device for waste ternary lithium battery electrode materials according to claim 1, characterized in that: The secondary cutting section (10) includes a mounting shaft four (24), the mounting shaft four (24) is fixedly mounted on the outer wall of the rotating shaft (6), and a cutting knife three (25) is fixedly mounted on the outer wall of the mounting shaft four (24), and the cutting knife three (25) is provided in three groups, and the three groups of cutting knives three (25) are arranged in a spiral. The specifications of the cutting knife three (25) are the same as those of the cutting knife two (23).

6. The device for efficiently stripping and separating waste ternary lithium battery electrode materials according to claim 1, characterized in that: The scattering section (11) includes a mounting shaft (5) (26), the mounting shaft (26) being fixedly mounted on the outer wall of the rotating shaft (6), and a scattering blade (27) being fixedly mounted on the outer wall of the mounting shaft (26), wherein a plurality of scattering blades (27) are provided and distributed in a circular array on the mounting shaft (26), and the root position of the scattering blade (27) is higher than the rest of the positions on the scattering blade (27).

7. The device for efficiently stripping and separating waste ternary lithium battery electrode materials according to claim 1, characterized in that: The separation component includes a magnetic separation device (44), the mixed liquid output end of the magnetic separation device (44) is connected to the input end of the electrostatic separation device (46) through a diaphragm pump (45), and the mixed liquid output end of the electrostatic separation device (46) is connected to the input end of the specific gravity separation device (47) through a pipeline. The separation solid outlets of the magnetic separation device (44), the electrostatic separation device (46), and the specific gravity separation device (47) are all provided with material boxes.

8. The device for efficiently stripping and separating waste ternary lithium battery electrode materials according to claim 1, characterized in that: An industrial fan (33) is fixedly mounted on the mounting frame (1); an air outlet end of the industrial fan (33) is connected to an air guide pipe (32); a top end of the air guide pipe (32) is connected to an air guide channel (30); the air guide channel (30) is connected to an air inlet end of a trumpet-shaped air blowing head (29) via a pulse air blowing valve (31); a top end of the exhaust pipe (34) is connected to a hose (35); an end of the hose (35) away from the exhaust pipe (34) is connected to an air inlet end of the industrial air purifier.

9. The device for efficiently stripping and separating waste ternary lithium battery electrode materials according to claim 1, characterized in that: A heater (40) is fixedly mounted on the outer wall of the top end of the stirring tank (2), and a heating head (41) of the heater (40) extends into the stirring tank (2). A temperature sensor (42) is fixedly mounted on the outer wall of the stirring tank (2), and a detection end of the temperature sensor (42) extends into the stirring tank (2). Three temperature sensors (42) are provided and distributed at different positions of the stirring tank (2).

10. The device for efficiently stripping and separating waste ternary lithium battery electrode materials according to claim 1, characterized in that: The inner wall of the pre-processor (3) is fixedly mounted with a cutting chamber 1 (12) and a cutting chamber 2 (13). The cutting chamber 1 (12) is covered outside the primary cutting section (9), and the cutting chamber 2 (13) is covered outside the secondary cutting section (10). The inner walls of the cutting chamber 1 (12) and the cutting chamber 2 (13) are both fixedly mounted with a cutting knife 1 (14). The inclination direction of the cutting knife 1 (14) is opposite to that of the cutting knife 2 (23) and the cutting knife 3 (25). A feed bin (36) is fixedly installed on the top of the preprocessor (3), and the interior of the feed bin (36) is connected to the interior of the preprocessor (3). A left feed roller (37), a right feed roller (38), and an auxiliary guide roller (39) are rotatably arranged in the feed bin (36). The auxiliary guide roller (39) is arranged below the right feed roller (38). The right feed roller (38) rotates in the opposite direction to the left feed roller (37) and the auxiliary guide roller (39).

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