Multi-stage crushing and sorting equipment and process for recycling and regenerating lithium iron phosphate batteries

Abstract

The invention belongs to the technical field of battery recovery and treatment, and discloses multi-stage crushing and sorting equipment for recycling and regenerating lithium iron phosphate batteries, which comprises a base, a multi-stage crushing mechanism, a primary sorting mechanism and a collection box I, the multi-stage crushing mechanism is installed on the base, the primary separation mechanism is arranged on the multi-stage crushing mechanism, and the first collection box is placed on the base and located below the primary separation mechanism; the primary separation mechanism comprises a fixed sleeve, the fixed sleeve is installed at a discharging port of the multi-stage crushing mechanism, the fixed sleeve is movably sleeved with a movable sleeve, four limiting blocks which are arranged in a surrounding mode are installed in the movable sleeve in a sliding mode, and the inner sides of the limiting blocks are connected with a connecting frame. By means of the design, battery shell waste clamped in the arc-shaped separation screen plates can be vibrated off, meanwhile, due to the fact that a large amount of black powder is located on the lower portion, when the upper arc-shaped separation screen plates vibrate, a large amount of floating powder cannot be generated, and leakage of the floating powder is avoided.

Description

Technical Field

[0001] The present invention belongs to the technical field of battery recycling and treatment, and specifically relates to a multi-stage crushing and sorting device and process for recycling and regenerating lithium iron phosphate batteries. Background Art

[0002] Currently, during the recycling and treatment of lithium iron phosphate batteries, it is necessary to use a multi-stage crushing and sorting device to crush the batteries, and then separate the battery shell waste and black powder produced by the crushing. Most of the existing sorting methods use a mesh plate for sorting. Since the battery shell waste will be in an irregular state after being crushed and often has barbs, during the process of passing through the filter plate of the mesh plate, the barbs of the battery shell waste will be inserted into the mesh holes in the mesh plate, resulting in the battery shell waste being unable to naturally separate from the mesh plate. As the sorting operation continues, a large amount of battery shell waste will get stuck on the mesh plate, causing blockage, thereby reducing the separation efficiency of the black powder. At the same time, after the battery shell waste is separated from the black powder, some black powder will still adhere to the surface of the battery shell waste, resulting in poor separation effect between the battery shell waste and the black powder, and often requiring multiple sorts, thus prolonging the time for battery recycling and treatment.

[0003] Therefore, a multi-stage crushing and sorting device for recycling and regenerating lithium iron phosphate batteries is proposed to solve the above problems. Summary of the Invention

[0004] To solve the problems raised in the above background art, the present invention provides a multi-stage crushing and sorting device and process for recycling and regenerating lithium iron phosphate batteries.

[0005] To achieve the above object, the present invention provides the following technical solution: A multi-stage crushing and sorting device for recycling and regenerating lithium iron phosphate batteries further includes a base, a multi-stage crushing mechanism, a preliminary sorting mechanism, and a first collection box; The multi-stage crushing mechanism is installed on the base, the preliminary sorting mechanism is arranged on the multi-stage crushing mechanism, and the first collection box is placed on the base and located below the preliminary sorting mechanism; The initial separation mechanism includes a fixed sleeve, which is installed at the discharge port of the multi-stage crushing mechanism. An outer movable sleeve is sleeved on the outside of the fixed sleeve. Four circumferentially arranged limiting blocks are slidably installed inside the movable sleeve. A connecting frame is connected to the inner side of the limiting block. One side of the connecting frame is connected with an arc-shaped separation net plate located inside the fixed sleeve. There are four arc-shaped separation net plates, and the four arc-shaped separation net plates are all circumferentially arranged inside the fixed sleeve and can be spliced into a circle. One side of the connecting frame is connected with a moving rod, and the other end of the moving rod passes through the movable sleeve. A first spring is sleeved on the outside of the moving rod, and the two ends of the first spring are respectively connected with the connecting frame and the movable sleeve. The outside of the arc-shaped separation net plate is connected with a fixed block close to the multi-stage crushing mechanism side. A ring groove is opened on one side of the multi-stage crushing mechanism facing the fixed sleeve. A row of second convex blocks is installed above the inside of the ring groove. One side of the fixed block is connected with a first convex block located inside the ring groove.

[0006] Preferably, a toothed ring is fixedly sleeved on the outside of the movable sleeve. An installation frame is installed above the fixed sleeve. One side of the installation frame is connected with a protective cover located outside the toothed ring. A gear that can mesh with the toothed ring is movably installed inside the protective cover, and the gear can be driven by a motor.

[0007] Preferably, it further includes a fine separation mechanism and a second collection box; The fine separation mechanism is installed on the base, and the second collection box is placed on the base and is located below the fine separation mechanism; The fine separation mechanism includes a housing, which is installed on the base. An inverted material groove close to the movable sleeve is installed inside the housing. A swing frame is movably installed inside the housing. A screen is connected inside the swing frame. Movable arms coaxial with the swing frame are connected to the front and rear of the housing. The inner side of the movable arm is connected with a round shaft located above the housing.

[0008] Preferably, an installation block is installed on the top of the housing. A square rod is movably sleeved inside the installation block. One end of the square rod is connected with a second spring inside the installation block, and the other end of the second spring is connected with the inner wall of the installation block.

[0009] Preferably, the other end of the square rod is connected with a connecting block movably sleeved outside the round shaft, and the other side of the connecting block is connected with a pressing rod that can abut against the moving rod.

[0010] Preferably, the discharge port below the housing is fixedly communicated with a fixed cylinder. The discharge port at the bottom of the housing is fixedly communicated with a net cylinder located inside the fixed cylinder. A power motor is installed above the inside of the housing. The power motor is drivingly connected with a rotating shaft, and the other end of the rotating shaft extends into the inside of the net cylinder. Four vertically arranged round sleeves are fixedly sleeved on the outside of the rotating shaft inside the net cylinder, and rubber leaves are connected to both sides of the round sleeve.

[0011] Preferably, a fixing rod is connected to the outside of the rotating shaft, and a threaded ring that can contact the inner cavity of the mesh cylinder is connected to the other end of the fixing rod.

[0012] Preferably, an installation box is connected to one side of the fixing cylinder, a bracket located below the installation box is connected to the outside of the fixing cylinder, a suction fan is connected to the top of the bracket, an air pipe communicates with one side of the suction fan facing the installation box, and the other end of the air pipe communicates with the installation box.

[0013] Preferably, a collection box is movably inserted into the installation box, and a filter plate is arranged inside the collection box.

[0014] Preferably, the following operating steps: S1: The battery is conveyed into the multi-stage crushing mechanism through a conveyor belt and is crushed by the multi-stage crushing mechanism. The generated battery shell waste and black powder will enter the preliminary separation mechanism; S2: When the battery shell waste and black powder enter the arc-shaped separation mesh plate, the battery shell waste and black powder will be separated by the arc-shaped separation mesh plate. The separated black powder will naturally fall into the first collection box for collection; S3: The motor runs, drives the gear to rotate, drives the toothed ring and the movable sleeve to rotate, drives the four arc-shaped separation mesh plates to rotate simultaneously, and makes the battery shell waste turn over in the four arc-shaped separation mesh plates; S4: The arc-shaped separation mesh plate rotated to the upper part is abutted and squeezed by the first convex block and the second convex block, so that the outside of the arc-shaped separation mesh plate moves, vibrates as the arc-shaped separation mesh plate rotates, and shakes off the battery shell waste stuck in the arc-shaped separation mesh plate.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. By setting the arc-shaped separation mesh plate, the first convex block and the second convex block, due to the operation of the motor, the four arc-shaped separation mesh plates rotate, and the battery shell waste turns over in the four arc-shaped separation mesh plates, accelerating the separation of the battery shell waste and the black powder, improving the separation effect of the battery shell waste and the black powder. When an arc-shaped separation mesh plate is rotated to the upper part, through the extrusion cooperation of the first convex block and the second convex block and the elastic force of the first spring, the arc-shaped separation mesh plate vibrates during this process. This design can shake off the battery shell waste stuck in the arc-shaped separation mesh plate. At the same time, since a large amount of black powder is located below, when the upper arc-shaped separation mesh plate vibrates, a large amount of floating powder will not be generated, avoiding the leakage of the floating powder.

[0016] 2. In the present invention, by providing a resisting rod, a connecting block and a sieve mesh, after the arc-shaped separation mesh plate separates the black powder, the battery case waste falls onto the sieve mesh along the arc-shaped separation mesh plate through the material discharging groove. Due to the vibration of the arc-shaped separation mesh plate, the moving rod can be driven to expand and contract and vibrate together. At this time, the moving rod will push the resisting rod back and forth, causing the connecting block to move repeatedly. The swing frame and the sieve mesh are driven by the round shaft and the movable arm to make rapid back-and-forth swings, and the battery case waste on the sieve mesh is repeatedly lifted up. Under the action of inertia, part of the black powder attached to the battery case waste is shaken off, so that part of the black powder attached to the battery case waste is separated from the battery case waste.

[0017] 3. In the present invention, by providing a rotating shaft and rubber leaves, under the action of the repeated downward swings of the swing frame, the battery case waste can be shaken off into the interior of the mesh cylinder. Due to the operation of the power motor, the rotating shaft can drive the round sleeve and the rubber leaves to rotate. Due to the rotation of the rubber leaves, when the battery case waste is falling, it will be slapped by the rubber leaves, and under the action of inertia, the remaining black powder attached to the battery case waste is slapped off, further improving the separation degree between the battery case waste and the black powder, and thus improving the separation effect between the battery case waste and the black powder.

[0018] 4. In the present invention, by providing a fixed rod and a threaded ring, due to the suction force generated by the operation of the suction fan, the battery case waste with a smaller mass inside the mesh cylinder is adsorbed on the inner cavity of the mesh cylinder and cannot fall. Due to the rotation of the rotating shaft, the battery case waste adsorbed on the inner cavity of the mesh cylinder can be squeezed downward and discharged from the mesh cylinder through the rotation of the fixed rod and the threaded ring, and finally falls into the second collection box for collection. This design solves the problem that the battery case waste with a smaller mass cannot fall normally under the influence of negative pressure, and improves the discharging speed of the battery case waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is a sectional structural diagram of the present invention; Figure 3 is Figure 2 a partial enlarged structural diagram at A in Figure 4 is Figure 2 a partial enlarged structural diagram at B in Figure 5 is a sectional structural diagram of the outer shell of the present invention; Figure 6 is a sectional structural diagram of the movable ring of the present invention; Figure 7 is a structural diagram of the first convex block of the present invention; Figure 8 is a structural diagram of the protective cover of the present invention; Figure 9Schematic cross-sectional structure diagram of the movable sleeve of the present invention; Figure 10 Schematic cross-sectional structure diagram of the protective cover of the present invention; Figure 11 Schematic structure diagram of the connecting block of the present invention; Figure 12 Schematic structure diagram of the thread ring of the present invention.

[0020] In the figure: 1. Base; 2. Multi-stage crushing mechanism; 3. Primary separation mechanism; 31. Fixed sleeve; 32. Movable sleeve; 33. Limit block; 34. Connecting frame; 35. Arc-shaped separation net plate; 36. Moving rod; 37. First spring; 38. Fixed block; 39. First convex block; 310. Second convex block; 311. Ring groove; 312. Mounting frame; 313. Protective cover; 314. Tooth ring; 315. Gear; 4. First collection box; 5. Fine separation mechanism; 51. Outer shell; 52. Dumping chute; 53. Swing frame; 54. Sieve mesh; 55. Movable arm; 56. Round shaft; 57. Mounting block; 58. Square rod; 59. Second spring; 510. Connecting block; 511. Pushing rod; 512. Fixed cylinder; 513. Mesh cylinder; 514. Power motor; 515. Rotating shaft; 516. Round sleeve; 517. Rubber leaf; 518. Fixed rod; 519. Thread ring; 520. Bracket; 521. Blower; 522. Air pipe; 523. Installation box; 524. Collection box; 525. Filter plate; 6. Second collection box. Detailed implementation manners

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] As Figures 1 to 12 shown, the present invention provides a multi-stage crushing and sorting device for recycling and regenerating lithium iron phosphate batteries, further including a base 1, a multi-stage crushing mechanism 2, a primary separation mechanism 3, and a first collection box 4; The multi-stage crushing mechanism 2 is installed on the base 1, the primary separation mechanism 3 is arranged on the multi-stage crushing mechanism 2, and the first collection box 4 is placed on the base 1 and located below the primary separation mechanism 3; The primary separation mechanism 3 includes a fixed sleeve 31 which is installed at the discharge port of the multi-stage crushing mechanism 2. An outer movable sleeve 32 is sleeved on the outside of the fixed sleeve 31. Four circumferentially arranged limiting blocks 33 are slidably installed inside the movable sleeve 32. The inner sides of the limiting blocks 33 are connected with a connecting frame 34. One side of the connecting frame 34 is connected with an arc-shaped separation mesh plate 35 located inside the fixed sleeve 31. There are four arc-shaped separation mesh plates 35. The four arc-shaped separation mesh plates 35 are all circumferentially arranged inside the fixed sleeve 31 and can be spliced into a circle. One side of the connecting frame 34 is connected with a moving rod 36. The other end of the moving rod 36 passes through the movable sleeve 32. A first spring 37 is sleeved on the outside of the moving rod 36. The two ends of the first spring 37 are respectively connected with the connecting frame 34 and the movable sleeve 32. The outside of the arc-shaped separation mesh plate 35 is connected with a fixed block 38 close to one side of the multi-stage crushing mechanism 2. A ring groove 311 is formed on one side of the multi-stage crushing mechanism 2 facing the fixed sleeve 31. A row of second convex blocks 310 is installed above the inside of the ring groove 311. One side of the fixed block 38 is connected with a first convex block 39 located inside the ring groove 311.

[0023] Adopting the above solution: When the battery case waste and black powder enter into the arc-shaped separation mesh plate 35, the battery case waste and black powder will be separated by the arc-shaped separation mesh plate 35. The separated black powder will naturally fall into the first collection box 4 for collection. Due to the rotation of the movable sleeve 32, the four arc-shaped separation mesh plates 35 can be driven to rotate simultaneously, causing the battery case waste to turn over inside the four arc-shaped separation mesh plates 35, accelerating the separation of the battery case waste and the black powder, and improving the separation effect of the battery case waste and the black powder. When an arc-shaped separation mesh plate 35 is rotated to the upper side, the first convex block 39 can be made to abut against and squeeze the second convex block 310. Due to the first convex block 39 being squeezed, the first convex block 39 can drive the fixed block 38, the arc-shaped separation mesh plate 35, the connecting frame 34, the moving rod 36 and the limiting blocks 33 to move outward. At this time, the first spring 37 is compressed. Due to the elastic recovery of the first spring 37, when the first convex block 39 and the second convex block 310 are not in contact, the arc-shaped separation mesh plate 35 can be reset. As the arc-shaped separation mesh plate 35 rotates, when the arc-shaped separation mesh plate 35 rotates to the upper area, vibration can occur, so that the battery case waste stuck in the arc-shaped separation mesh plate 35 can be shaken off.

[0024] As Figure 2 、 Figures 8 to 10 As shown, a toothed ring 314 is fixedly sleeved on the outside of the movable sleeve 32. An installation frame 312 is installed above the fixed sleeve 31. One side of the installation frame 312 is connected with a protective cover 313 located outside the toothed ring 314. A gear 315 that can mesh with the toothed ring 314 is movably installed inside the protective cover 313. The gear 315 can be driven by a motor.

[0025] Adopting the above solution: Due to the operation of the motor, the gear 315 can be driven to rotate, and the rotation of the gear 315 drives the ring gear 314 and the movable sleeve 32 to rotate through the meshing of the gear 315 and the ring gear 314.

[0026] As Figure 2 , Figure 4 , Figure 5 and Figure 11 shown, it further includes a subdivision mechanism 5 and a second collection box 6; The subdivision mechanism 5 is installed on the base 1, and the second collection box 6 is placed on the base 1 and located below the subdivision mechanism 5; The subdivision mechanism 5 includes a housing 51, the housing 51 is installed on the base 1, an inverted chute 52 close to the movable sleeve 32 is installed inside the housing 51, a swing frame 53 is movably installed inside the housing 51, a screen 54 is connected inside the swing frame 53, movable arms 55 coaxial with the swing frame 53 are connected to the front and rear sides of the housing 51, and a round shaft 56 located above the housing 51 is connected to the inner side of the movable arm 55.

[0027] Adopting the above solution: Since the round shaft 56 is subjected to back-and-forth extrusion, the round shaft 56 and the movable arm 55 can drive the swing frame 53 and the screen 54 to make rapid back-and-forth swings. Due to the back-and-forth swings of the screen 54, the battery case waste can be repeatedly lifted on the screen 54, and under the action of inertia, part of the black powder attached to the battery case waste can be shaken off.

[0028] As Figure 2 , Figure 4 , Figure 5 and Figure 11 shown, an installation block 57 is installed on the top of the housing 51, a square rod 58 is movably sleeved inside the installation block 57, one end of the square rod 58 is connected to a second spring 59 inside the installation block 57, and the other end of the second spring 59 is connected to the inner wall of the installation block 57.

[0029] Adopting the above solution: When the square rod 58 repeatedly moves inside the installation block 57, the second spring 59 is also repeatedly compressed and released. At the same time, the elastic force of the second spring 59 is released, which can play a role in resetting the square rod 58.

[0030] As Figure 2 , Figure 4 , Figure 5 and Figure 11 shown, the other end of the square rod 58 is connected to a connection block 510 movably sleeved outside the round shaft 56, and a contact rod 511 that can abut against the moving rod 36 is connected to the other side of the connection block 510.

[0031] Adopting the above scheme: Due to the vibration of the arc-shaped separation mesh plate 35, the moving rod 36 can be telescoped and vibrated together. At this time, the moving rod 36 will push and prop against the rod 511 back and forth, causing the rod 511 to drive the connecting block 510 and the square rod 58 to move repeatedly inside the mounting block 57. Due to the repeated movement of the connecting block 510, the round shaft 56 can be squeezed back and forth.

[0032] As Figure 2 , Figure 4 , Figure 5 and Figure 11 shown, a fixed cylinder 512 is fixedly connected to the discharge port below the housing 51, a mesh cylinder 513 located inside the fixed cylinder 512 is fixedly connected to the discharge port at the bottom of the housing 51, a power motor 514 is installed above the inside of the housing 51, the power motor 514 is drivingly connected to a rotating shaft 515, the other end of the rotating shaft 515 extends into the inside of the mesh cylinder 513, and four vertically arranged round sleeves 516 located inside the mesh cylinder 513 are fixedly sleeved on the outside of the rotating shaft 515, and rubber leaves 517 are connected to both sides of the round sleeve 516.

[0033] Adopting the above scheme: Under the action of the repeated downward swing of the swing frame 53, the battery case waste can be shaken off into the inside of the mesh cylinder 513. Due to the operation of the power motor 514, the rotating shaft 515 can drive the round sleeve 516 and the rubber leaves 517 to rotate. Due to the rotation of the rubber leaves 517, when the battery case waste is falling, it will be slapped by the rubber leaves 517, and under the action of inertia, the remaining black powder attached to the battery case waste will be slapped off, further improving the separation degree between the battery case waste and the black powder, thereby improving the separation effect between the battery case waste and the black powder.

[0034] As Figure 2 , Figure 4 , Figure 5 , Figure 11 and Figure 12 shown, a fixed rod 518 is connected to the outside of the rotating shaft 515, and the other end of the fixed rod 518 is connected to a thread ring 519 that can contact the inner cavity of the mesh cylinder 513.

[0035] Adopting the above scheme: Due to the suction force generated by the operation of the suction fan 521, the battery case waste with a smaller mass inside the mesh cylinder 513 will be adsorbed on the inner cavity of the mesh cylinder 513 and unable to fall. Due to the rotation of the rotating shaft 515, the battery case waste adsorbed on the inner cavity of the mesh cylinder 513 can be squeezed downward and discharged from the inside of the mesh cylinder 513 through the rotation of the fixed rod 518 and the thread ring 519, and finally fall into the collection box two 6 for collection.

[0036] As Figure 2 , Figure 4 , Figure 5 and Figure 11As shown in the figure, on one side of the fixed cylinder 512, there is an installation box 523 connected. On the outside of the fixed cylinder 512, there is a bracket 520 connected below the installation box 523. At the top of the bracket 520, there is a suction fan 521 connected. On the side of the suction fan 521 facing the installation box 523, there is an air pipe 522 connected, and the other end of the air pipe 522 is connected to the installation box 523.

[0037] Adopting the above scheme: Due to the operation of the suction fan 521, negative pressure suction can be generated in the fixed cylinder 512 and the housing 51 through the air pipe 522 and the installation box 523, sucking the black powder shaken off by the sieve mesh 54 and slapped off by the rubber leaf 517 into the interior of the installation box 523.

[0038] As Figure 2 、 Figure 4 、 Figure 5 and Figure 11 shown, inside the installation box 523, there is a collection box 524 inserted movably, and inside the collection box 524, there is a filter plate 525.

[0039] Adopting the above scheme: The black powder sucked into the interior of the installation box 523 will be blocked by the filter plate 525, so that the sucked black powder can be collected in the collection box 524. By removing the collection box 524 from the installation box 523, the black powder can be taken out.

[0040] As Figures 1 to 12 shown, the following operation steps: S1: Convey the battery to the inside of the multi-stage crushing mechanism 2 through the conveyor belt, and perform crushing treatment through the multi-stage crushing mechanism 2. The generated battery shell waste and black powder will enter the preliminary separation mechanism 3; S2: When the battery shell waste and black powder enter the arc-shaped separation mesh plate 35, the battery shell waste and black powder will be separated through the arc-shaped separation mesh plate 35, and the separated black powder will naturally fall into the collection box one 4 for collection; S3: The motor runs, drives the gear 315 to rotate, and drives the toothed ring 314 and the movable sleeve 32 to rotate, driving the four arc-shaped separation mesh plates 35 to rotate simultaneously, causing the battery shell waste to turn over inside the four arc-shaped separation mesh plates 35; S4: The arc-shaped separation mesh plate 35 rotated to the upper side is abutted and squeezed by the first convex block 39 and the second convex block 310, causing the outside of the arc-shaped separation mesh plate 35 to move, and vibrating as the arc-shaped separation mesh plate 35 rotates, shaking off the battery shell waste stuck inside the arc-shaped separation mesh plate 35.

[0041] The working principle and usage process of the present invention: When in use, first convey the battery to the inside of the multi-stage crushing mechanism 2 through the conveyor belt, and perform crushing treatment through the multi-stage crushing mechanism 2, and divide it into battery shell waste and black powder. The generated battery shell waste and black powder will enter the preliminary separation mechanism 3.

[0042] When the battery case waste and black powder enter the arc-shaped separation screen plate 35, the battery case waste and black powder will be separated by the arc-shaped separation screen plate 35. The separated black powder will naturally fall into the first collection box 4 for collection. Due to the operation of the motor, the gear 315 can be driven to rotate, and the toothed ring 314 and the movable sleeve 32 can be driven to rotate. Due to the rotation of the movable sleeve 32, the four arc-shaped separation screen plates 35 can be driven to rotate simultaneously, causing the battery case waste to turn over within the four arc-shaped separation screen plates 35, accelerating the separation of the battery case waste from the black powder, and improving the separation effect of the battery case waste from the black powder. When an arc-shaped separation screen plate 35 is rotated to the upper side, the first convex block 39 can be made to abut against and squeeze the second convex block 310. Due to the extrusion of the first convex block 39, the first convex block 39 can drive the fixed block 38, the arc-shaped separation screen plate 35, the connecting frame 34, the moving rod 36, and the limiting block 33 to move outward. At this time, the first spring 37 is compressed. Due to the elastic recovery of the first spring 37, when the first convex block 39 and the second convex block 310 are not in contact, the arc-shaped separation screen plate 35 can be reset. As the arc-shaped separation screen plate 35 rotates, when the arc-shaped separation screen plate 35 rotates to the upper area, it can vibrate, so that the battery case waste stuck in the arc-shaped separation screen plate 35 can be shaken off. At the same time, since a large amount of black powder is located below, when the upper arc-shaped separation screen plate 35 vibrates, a large amount of floating powder will not be generated, avoiding the leakage of floating powder.

[0043] After the arc-shaped separation screen plate 35 separates the black powder, the battery case waste can be made to fall along the arc-shaped separation screen plate 35 onto the pouring chute 52 and then onto the sieve 54 through the pouring chute 52. Due to the vibration of the arc-shaped separation screen plate 35, the moving rod 36 can be made to expand and contract and vibrate together. At this time, the moving rod 36 will push the abutting rod 511 back and forth, causing the abutting rod 511 to drive the connecting block 510 and the square rod 58 to move repeatedly inside the mounting block 57. At the same time, the second spring 59 is also repeatedly compressed and released. Due to the repeated movement of the connecting block 510, the swing frame 53 and the sieve 54 can be driven to swing back and forth quickly through the round shaft 56 and the movable arm 55. Due to the back-and-forth swing of the sieve 54, the battery case waste can be repeatedly lifted on the sieve 54, and under the action of inertia, part of the black powder attached to the battery case waste can be shaken off.

[0044] Under the action of the repeated downward swing of the swing frame 53, the battery case waste can be shaken into the interior of the mesh cylinder 513. Due to the operation of the power motor 514, the rotating shaft 515 can drive the round sleeve 516 and the rubber blades 517 to rotate. Due to the rotation of the rubber blades 517, during the falling process of the battery case waste, it will be slapped by the rubber blades 517, and under the action of inertia, the remaining black powder attached to the battery case waste will be slapped off, further improving the separation degree between the battery case waste and the black powder, and improving the separation effect between the battery case waste and the black powder. Due to the operation of the suction fan 521, negative pressure suction can be generated in the fixed cylinder 512 and the outer shell 51 through the air pipe 522 and the installation box 523, sucking the black powder shaken off by the sieve mesh 54 and slapped off by the rubber blades 517 into the interior of the installation box 523, and blocked by the filter plate 525, collecting the sucked black powder in the collection box 524. Due to the suction of the suction fan 521, the battery case waste with a smaller mass inside the mesh cylinder 513 will be adsorbed on the inner cavity of the mesh cylinder 513 and unable to fall. Due to the rotation of the rotating shaft 515, the battery case waste adsorbed on the inner cavity of the mesh cylinder 513 can be squeezed downward through the rotation of the fixed rod 518 and the threaded ring 519 and discharged from the mesh cylinder 513, and finally fall into the collection box two 6 for collection.

[0045] It should be noted that in this article, relational terms such as first and second are only used 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 "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0046] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-stage crushing and sorting equipment for recycling lithium iron phosphate batteries, characterized in that: It also includes a base (1), a multi-stage crushing mechanism (2), a primary separation mechanism (3), and a collection box (4); The multi-stage crushing mechanism (2) is mounted on the base (1), the primary separation mechanism (3) is arranged on the multi-stage crushing mechanism (2), and the collecting box (4) is placed on the base (1) and below the primary separation mechanism (3); The primary separation mechanism (3) comprises a fixed sleeve (31), the fixed sleeve (31) being installed at the discharge port of the multi-stage crushing mechanism (2), the outer movable sleeve of the fixed sleeve (31) being connected to a movable sleeve (32), the inner sliding installation of four surrounding limit blocks (33) of the movable sleeve (32), the inner side of the limit blocks (33) being connected to a connecting frame (34), one side of the connecting frame (34) being connected to an arc-shaped separation mesh plate (35) located in the fixed sleeve (31), four arc-shaped separation mesh plates (35) being provided, the four arc-shaped separation mesh plates (35) being arranged surrounding the inner side of the fixed sleeve (31) and being able to be spliced ​​into a circle, the connecting frame (34) ) is connected to one side of a moving rod (36), the other end of the moving rod (36) passes through a movable sleeve (32), the outer sleeve of the moving rod (36) is provided with a spring (37), the two ends of the spring (37) are respectively connected to the connecting frame (34) and the movable sleeve (32), the outer side of the arc-shaped separation screen (35) is connected to a fixed block (38) close to one side of the multi-stage crushing mechanism (2), the multi-stage crushing mechanism (2) is provided with an annular groove (311) on one side facing the fixed sleeve (31), a row of protrusions (310) are installed above the inside of the annular groove (311), and one side of the fixed block (38) is connected to a protrusion (39) located inside the annular groove (311).

2. The multi-stage crushing and sorting equipment for recycling lithium iron phosphate batteries according to claim 1 is characterized in that: The outer fixed sleeve of the movable sleeve (32) is connected to a gear ring (314); a mounting frame (312) is installed above the fixed sleeve (31); one side of the mounting frame (312) is connected to a protective cover (313) located outside the gear ring (314); a gear (315) capable of meshing with the gear ring (314) is movably installed inside the protective cover (313); and the gear (315) can be driven by a motor.

3. The multi-stage crushing and sorting equipment for recycling lithium iron phosphate batteries according to claim 1 is characterized in that: It also includes a subdivision mechanism (5) and a second collection box (6); The subdividing mechanism (5) is mounted on the base (1), and the second collecting box (6) is placed on the base (1) and is located below the subdividing mechanism (5); The subdividing mechanism (5) comprises a shell (51), the shell (51) being mounted on a base (1), a material pouring chute (52) being mounted inside the shell (51) and close to a movable sleeve (32), a swing frame (53) being movably mounted inside the shell (51), a screen (54) being connected inside the swing frame (53), movable arms (55) coaxial with the swing frame (53) being connected at the front and rear sides of the shell (51), and a circular shaft (56) located above the shell (51) being connected inside the movable arm (55).

4. The multi-stage crushing and sorting equipment for recycling lithium iron phosphate batteries according to claim 3 is characterized in that: A mounting block (57) is mounted on the top of the housing (51); a square rod (58) is movably sleeved inside the mounting block (57); one end of the square rod (58) is connected to a second spring (59) inside the mounting block (57); and the other end of the second spring (59) is connected to the inner wall of the mounting block (57).

5. The multi-stage crushing and sorting equipment for recycling lithium iron phosphate batteries according to claim 4, characterized in that: The other end of the square rod (58) is connected to a connection block (510) that is movably sleeved on the outside of the round shaft (56), and the other side of the connection block (510) is connected to an abutment rod (511) that can abut against the moving rod (36).

6. The multi-stage crushing and sorting equipment for recycling lithium iron phosphate batteries according to claim 3, characterized in that: The discharge port below the outer shell (51) is fixedly connected to a fixed cylinder (512), and the discharge port at the bottom of the outer shell (51) is fixedly connected to a net cylinder (513) located inside the fixed cylinder (512). A power motor (514) is installed above the interior of the outer shell (51), and the power motor (514) is drivingly connected to a rotating shaft (515). The other end of the rotating shaft (515) extends to the inside of the net cylinder (513), and the outside of the rotating shaft (515) is fixedly sleeved with four vertically arranged circular sleeves (516) located inside the net cylinder (513), and both sides of the circular sleeves (516) are connected to rubber leaves (517).

7. The multi-stage crushing and sorting equipment for recycling lithium iron phosphate batteries according to claim 6, characterized in that: The outer side of the rotating shaft (515) is connected to a fixing rod (518), and the other end of the fixing rod (518) is connected to a threaded ring (519) capable of contacting the inner cavity of the net cylinder (513).

8. The multi-stage crushing and sorting equipment for recycling lithium iron phosphate batteries according to claim 6, characterized in that: One side of the fixed cylinder (512) is connected to a mounting box (523), the outer side of the fixed cylinder (512) is connected to a bracket (520) located below the mounting box (523), the top of the bracket (520) is connected to a suction fan (521), the side of the suction fan (521) facing the mounting box (523) is connected to an air pipe (522), and the other end of the air pipe (522) is connected to the mounting box (523).

9. The multi-stage crushing and sorting equipment for recycling lithium iron phosphate batteries according to claim 8, characterized in that: A collection box (524) is movably inserted into the interior of the installation box (523), and a filter plate (525) is provided inside the collection box (524).

10. A process for using the multi-stage crushing and sorting equipment for recycling lithium iron phosphate batteries as claimed in claim 1, characterized in that: The steps are as follows: S1: The battery is transported to the interior of the multi-stage crushing mechanism (2) via a transmission belt, and is crushed by the multi-stage crushing mechanism (2), and the resulting battery shell waste and black powder enter the primary separation mechanism (3); S2: When the battery shell waste and black powder enter the arc-shaped separation mesh plate (35), the battery shell waste and black powder are separated by the arc-shaped separation mesh plate (35), and the separated black powder naturally falls into the collection box (4) for collection; S3: the motor runs, driving the gear (315) to rotate, and driving the gear ring (314) and the movable sleeve (32) to rotate, driving the four arc-shaped separation mesh plates (35) to rotate simultaneously, so that the battery shell waste is turned over in the four arc-shaped separation mesh plates (35); S4: The arc-shaped separation mesh plate (35) rotated to the top is abutted and squeezed by the protrusion 1 (39) and the protrusion 2 (310), so that the outer side of the arc-shaped separation mesh plate (35) moves. As the arc-shaped separation mesh plate (35) rotates, it vibrates, and the battery shell waste stuck in the arc-shaped separation mesh plate (35) is shaken off.

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