Recycling device and method for waste lithium battery

Abstract

The invention relates to the technical field of electrolyte recycling, in particular to a waste lithium battery recycling device and method.The waste lithium battery recycling device specifically comprises a collecting barrel, a dynamic centrifugal mechanism is arranged in the collecting barrel, the dynamic centrifugal mechanism comprises a centrifugal rotating barrel rotationally installed in the collecting barrel, and a plurality of water retaining blocks are installed at the top in the collecting barrel; according to the invention, through the dynamic centrifugal mechanism, intermittent material turning and splashing drainage treatment are respectively carried out on waste lithium battery crushed materials and electrolyte in the centrifugal process, so that the problem that the separation and recovery efficiency is influenced due to prolonged centrifugal time caused by centrifugal shielding and splashing falling of the electrolyte is avoided; and then through the auxiliary air outlet mechanism, the high-temperature gas is promoted to make comprehensive close-range contact with the crushed aggregates, and through the combination with the dynamic centrifugal mechanism, the crushed aggregates are continuously turned over, so that the efficient thermal decomposition efficiency and effect are achieved, and the recovery efficiency is further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of electrolyte recovery, and in particular to a device and method for recovering waste lithium batteries. Background Art

[0002] In the process of lithium battery recycling, the recovery of electrolyte is crucial. The traditional electrolyte recovery process is to recycle by crushing, centrifugation or high-temperature reaction. During centrifugation, although most of the electrolyte can be effectively separated, a small amount of electrolyte may still remain inside the lithium battery fragments. Since the electrolyte is organic, volatile and corrosive, it may produce toxic and corrosive hydrogen fluoride in a humid environment, posing a serious threat to the environment and human health. Therefore, additional secondary recovery steps are required, such as using a drying box, to ensure the complete recovery of the electrolyte.

[0003] For example, in the prior art, there is a high-efficiency and environmentally friendly waste lithium battery electrolyte recovery device with publication number CN117059944A. It is driven by dual modes of centrifugation and stirring high-temperature decomposition, so that the device can effectively recover and process the electrolyte. Although it can ensure the complete recovery of the electrolyte, it is still difficult to achieve a dynamic shifting effect on the waste lithium battery fragments that are centrifugally attached to the inner wall of the centrifugal drum during the centrifugal process, which makes it easy for the static fragments to block part of the electrolyte during centrifugal discharge, and the centrifugal separation effect cannot be achieved to the greatest extent, resulting in an extension of the subsequent high-temperature decomposition time. In addition, there is a lack of a structure for guiding the high-temperature gas to be in close and comprehensive contact with the fragments, which makes it difficult to further improve the high-temperature decomposition efficiency, greatly affecting the overall efficiency of electrolyte separation and recovery. Summary of the invention

[0004] The purpose of the present invention is to provide a device and method for recycling waste lithium batteries to solve the above-mentioned technical defects.

[0005] The object of the present invention can be achieved by the following technical scheme: a recycling device for waste lithium batteries, comprising a collecting cylinder, wherein a dynamic centrifugal mechanism is arranged in the collecting cylinder, and the dynamic centrifugal mechanism comprises a centrifugal drum rotatably mounted inside the collecting cylinder, a plurality of arc filter plates are mounted on the annular outer wall of the centrifugal drum, a plurality of rotating rods are rotatably mounted inside the centrifugal drum, and a material stripping plate is mounted on the rotating rods, and a plurality of water retaining blocks are mounted on the top of the collecting cylinder;

[0006] An auxiliary air outlet mechanism is installed inside the centrifugal drum, and the auxiliary air outlet mechanism includes a reciprocating screw rotatably installed inside the centrifugal drum, and a movable seat is threadedly connected to the reciprocating screw, and the movable seat is connected to a push ring through a plurality of connecting pipes, and a plurality of air outlet holes communicating with the interior of the push ring are opened on both sides of the push ring, and a limit rod sliding with the connecting pipe is fixed to the inside of the centrifugal drum.

[0007] Preferably, a driven sprocket is fixedly mounted on the centrifugal drum, a motor is mounted on the bottom of the collecting drum via bolts, and a driving sprocket is mounted on the output shaft of the motor, the driving sprocket and the driven sprocket are connected via a chain transmission, a gear is mounted on one end of the rotating rod, and an arc-shaped gear ring is fixedly connected to the top of the collecting drum.

[0008] Preferably, the interior of the collecting tube is provided with an arc-shaped gear ring 2 which forms an annular structure with the arc-shaped gear ring 1, and a guide rod fixedly connected to the arc-shaped gear ring 2 which is slidably connected. An electric push rod is installed on the outer wall of the collecting tube, and the end of the electric push rod is fixedly connected to the arc-shaped gear ring 2.

[0009] Preferably, the cross-section of the water retaining block is a Z-shaped structure, and the lower corner of the water retaining block is located below the upper corner of the water retaining block on an adjacent side, a guide slope is provided on the concave side of the lower corner of the water retaining block, and a water guide plate connected to multiple water retaining blocks is fixedly connected to the interior of the collecting tube and located at the lower part of the guide slope.

[0010] Preferably, the top and bottom sides of the collecting cylinder are respectively fixedly connected with an exhaust pipe and a liquid discharge pipe, and one side of the collecting cylinder is fixedly connected with an air intake pipe.

[0011] Preferably, a rotating seat rotatably connected to the centrifugal drum is fixedly mounted on the reciprocating screw, a support plate rotatably connected to the reciprocating screw is fixedly mounted on the centrifugal drum, and a telescopic tube is fixedly connected between the movable seat, the rotating seat and the support plate.

[0012] Preferably, a telescopic tube 2 is fixedly connected between the rotating seat and the movable seat, a plurality of air inlet holes 1 are penetrated through the rotating seat, and an air inlet hole 2 communicating with a corresponding connecting tube is opened on the movable seat.

[0013] Preferably, one side of the centrifugal drum is fixedly connected to a rotating frame rotating with the arc-shaped gear ring 2 through a telescopic sleeve, the reciprocating screw is fixedly connected to a gear 3, and two sets of mutually meshing gears 2 are rotatably installed on both sides of the gear 3 on the rotating frame.

[0014] The present invention also proposes a method for recycling waste lithium batteries, which includes the following: a drainage centrifugal recovery process of electrolyte, a dynamic centrifugal treatment of lithium battery fragments and a high-efficiency thermal decomposition link of residual electrolyte.

[0015] The beneficial effects of the present invention are as follows:

[0016] (1) The present invention places waste lithium battery fragments on a centrifugal drum and drives it to rotate through a motor. Combined with the arrangement of multiple groups of water retaining blocks at the top of the collecting drum, the electrolyte splashing upward can be intercepted and guided to a water guide plate on one side, and then drained to the bottom of the collecting drum through the water guide plate and the centrifugal drum in a contactless manner, which can effectively prevent the electrolyte splashing upward from falling and contacting the centrifugal drum, thereby prolonging the centrifugal separation time; and by means of the centrifugal drum driving the revolution of the rotating rod, the gear 1 and the arc-shaped gear ring 1 are intermittently meshed, so that the rotating rod intermittently carries the material-pickling plate to rotate synchronously, thereby achieving a dynamic prying effect on the waste lithium battery fragments centrifugally attached to the inner wall of the centrifugal drum, further avoiding the problem of blocking part of the electrolyte during centrifugal discharge due to the accumulation of fragments;

[0017] (2) When the present invention performs high-temperature thermal decomposition on waste lithium battery fragments, high-temperature gas is first injected into the push ring and discharged into the fragments attached to the inner wall of the centrifugal drum through multiple air outlets, so that the high-temperature gas quickly contacts the fragments. Then, through the cooperation of the arc-shaped gear ring 2 and the arc-shaped gear ring 1, on the one hand, the rotating rod is continuously rotated to continuously turn the fragments, and on the other hand, the reciprocating screw rod carries the push ring to move back and forth, so that the residual electrolyte on the fragments is fully contacted and thermally decomposed, thereby achieving high thermal decomposition efficiency and effect, and further improving the recovery efficiency of the waste lithium battery electrolyte; in addition, the reciprocating movement of the push ring can assist in the discharge of the fragments after separation and recovery, thereby improving the convenience of discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below in conjunction with the accompanying drawings;

[0019] Figure 1 It is a schematic diagram of the structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the internal structure of the collecting tube of the present invention;

[0021] Figure 3 It is a schematic structural diagram of the collecting tube of the present invention;

[0022] Figure 4 It is a structural schematic diagram of the water retaining block of the present invention;

[0023] Figure 5 It is a schematic diagram of the cooperation between the dynamic centrifugal mechanism and the auxiliary air outlet mechanism of the present invention;

[0024] Figure 6 It is a structural schematic diagram of the dynamic centrifugal mechanism of the present invention;

[0025] Figure 7 It is a schematic diagram of the cooperation between the auxiliary air outlet mechanism and the arc-shaped gear ring 2 of the present invention;

[0026] Figure 8 It is a structural schematic diagram of the auxiliary air outlet mechanism of the present invention;

[0027] Fig. 9 It is a structural schematic diagram of the push ring of the present invention.

[0028] Legend:

[0029] 1. Collection cylinder; 11. Water retaining block; 12. Motor; 13. Driving sprocket; 14. Chain; 15. Arc gear ring 1; 16. Arc gear ring 2; 17. Electric push rod; 18. Water guide plate;

[0030] 2. Dynamic centrifugal mechanism; 21. Centrifugal drum; 22. Curved filter plate; 23. Rotating rod; 24. Driven sprocket; 25. Gear 1; 26. Rotating frame; 27. Gear 2;

[0031] 3. Auxiliary air outlet mechanism; 31. Reciprocating screw rod; 32. Movable seat; 33. Connecting pipe; 34. Pushing ring; 35. Air outlet hole; 36. Rotating seat; 37. Telescopic tube 1; 38. Telescopic tube 2; 39. Gear 3. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0033] Example 1: Please refer to Figure 1-Figure 6 As shown, the problem that the waste lithium battery fragments in the prior art easily block part of the electrolyte during centrifugal discharge, making it difficult to achieve the centrifugal separation effect to the greatest extent, resulting in a prolonged subsequent high-temperature decomposition time, can be solved by the following solution;

[0034] In this embodiment, a recycling device for waste lithium batteries includes a collecting barrel 1, a dynamic centrifugal mechanism 2 is arranged in the collecting barrel 1, and the dynamic centrifugal mechanism 2 includes a centrifugal drum 21 rotatably installed inside the collecting barrel 1, and the opening side of the centrifugal drum 21 is placed outside the collecting barrel 1 and is sealed with a sealing door for the introduction and discharge of waste lithium battery fragments;

[0035] A plurality of arc-shaped filter plates 22 are installed on the annular outer wall of the centrifugal drum 21. The waste lithium battery fragments are placed inside the centrifugal drum 21. The centrifugal drum 21 rotates to centrifugally separate the electrolyte in the waste lithium battery fragments. The electrolyte is centrifugally discharged from the centrifugal drum 21 through the filter holes on the arc-shaped filter plates 22 and is blocked and collected by the collecting drum 1.

[0036] A plurality of rotating rods 23 are installed for rotation inside the centrifugal drum 21, and a material-push plate is installed on the rotating rods 23. The rotating rods 23 intermittently carry the material-push plate to rotate, and the waste lithium battery fragments centrifugally attached to the inner wall of the centrifugal drum 21 are pushed, so as to further avoid the problem of obstruction of part of the electrolyte during centrifugal discharge caused by the accumulation of fragments, so as to assist the centrifugal discharge of the electrolyte on the waste lithium battery fragments. A plurality of water retaining blocks 11 are installed on the top of the collecting drum 1, which are used to drain the electrolyte splashing upward, so as to avoid the problem of the electrolyte splashing upward falling and contacting the centrifugal drum 21, thereby prolonging the centrifugal separation time.

[0037] A driven sprocket 24 is fixedly mounted on the centrifugal drum 21, and the driven sprocket 24 is mounted on the side wall of the centrifugal drum 21 located outside the collecting drum 1. A motor 12 is mounted on the bottom of the collecting drum 1 by bolts, and a driving sprocket 13 is mounted on the output shaft of the motor 12. The driving sprocket 13 and the driven sprocket 24 are connected by a chain 14. The motor 12 drives the driving sprocket 13 to rotate, and combines with the driven sprocket 24 and the chain 14 to drive the centrifugal drum 21 to rotate, so as to centrifugally separate the electrolyte in the waste lithium battery fragments.

[0038] A gear 25 is installed at one end of the rotating rod 23, and an arc-shaped gear ring 15 is fixedly connected to the top of the collecting cylinder 1. The rotation of the centrifugal drum 21 is used to drive multiple rotating rods 23 to revolve. During the revolution, the gear 25 on the rotating rod 23 intermittently meshes with the arc-shaped gear ring 15, causing the rotating rod 23 to intermittently carry the material stripping plate to rotate synchronously.

[0039] The cross section of the water retaining block 11 is a Z-shaped structure. The corner on the upper side of the water retaining block 11 is used to guide the electrolyte entering between two adjacent groups of water retaining blocks 11, and guide the electrolyte to the corner on the lower side of the water retaining block 11. The guided electrolyte is then collected by the concave side of the corner on the lower side of the water retaining block 11, thereby intercepting the electrolyte splashing upwards, avoiding the problem that the electrolyte splashing upwards directly falls and contacts the centrifugal drum 21, thereby prolonging the centrifugal separation time.

[0040] The lower corner of the water retaining block 11 is located below the upper corner of the water retaining block 11 on the adjacent side, and a guide slope is provided on the inner concave side of the lower corner of the water retaining block 11, so that the electrolyte in the water retaining block 11 flows to one side of the collecting tube 1, and a water guide plate 18 connected to a plurality of water retaining blocks 11 is fixedly connected inside the collecting tube 1 and located at the lower part of the guide slope, for draining the electrolyte on the water retaining block 11;

[0041] During the centrifugation process, the electrolyte splashing upward passes through the gap between two adjacent groups of water retaining blocks 11 and the guidance of the water retaining blocks 11, prompting the electrolyte to enter the concave side of the lower corner of the adjacent side water retaining block 11, and enter the water guide plate 18 through the guiding slope on the water retaining block 11, and then falls to the bottom of the collecting cylinder 1 without contact with the centrifugal drum 21, and is finally discharged through the drain pipe.

[0042] The top and bottom sides of the collecting cylinder 1 are fixedly connected with an exhaust pipe and a drain pipe respectively. The drain pipe is used to discharge the centrifugally separated electrolyte, and the exhaust pipe is used to discharge the high-temperature gas, thereby realizing the separation and recovery of the electrolyte. One side of the collecting cylinder 1 is fixedly connected with an air inlet pipe, which is arranged on one side of the closed end of the centrifugal drum 21 for realizing the injection of high-temperature gas.

[0043] Example 2: Please refer to Figure 2 , Figure 3 , Figure 5 and Figure 7-Figure 9 As shown, the problem of lack of a structure for guiding the high-temperature gas to have close and comprehensive contact with the crushed materials, making it difficult to further improve the high-temperature decomposition efficiency, can be solved by the following solutions:

[0044] In this embodiment, an auxiliary air outlet mechanism 3 is installed inside the centrifugal drum 21. The auxiliary air outlet mechanism 3 includes a reciprocating screw 31 rotatably installed inside the centrifugal drum 21, and a movable seat 32 is threadedly connected to the reciprocating screw 31. The movable seat 32 is connected to a push ring 34 through a plurality of connecting tubes 33. The reciprocating screw 31 rotates to drive the movable seat 32 to reciprocate, and the connecting tube 33 cooperates to promote the push ring 34 to reciprocate. A plurality of air outlet holes 35 communicating with the interior of the push ring 34 are opened on both sides of the push ring 34.

[0045] High-temperature gas is injected into the push ring 34 and discharged into the crushed materials attached to the inner wall of the centrifugal drum 21 through multiple air outlets 35, so that the high-temperature gas and the crushed materials come into quick contact. The air outlets 35 are inclined to prevent part of the electrolyte from entering the push ring 34 during the centrifugal separation process. A limit rod that slides with the connecting pipe 33 is fixed to the inside of the centrifugal drum 21. The limit rod is used to limit the rotation of the push ring 34, thereby promoting the linear movement of the push ring 34 when the reciprocating screw 31 rotates. In addition, the reciprocating movement of the push ring 34 can assist in the discharge of the crushed materials after separation and recovery, thereby improving the convenience of discharge.

[0046] The interior of the collecting tube 1 is provided with an arc-shaped gear ring 2 16 which forms an annular structure with the arc-shaped gear ring 1 15, and a guide rod which is fixedly connected to the arc-shaped gear ring 2 16 and is slidably connected to the arc-shaped gear ring 2 16, and is used for the arc-shaped gear ring 2 16 to move horizontally in the collecting tube 1. An electric push rod 17 is installed on the outer wall of the collecting tube 1, and the end of the electric push rod 17 is fixedly connected to the arc-shaped gear ring 2 16;

[0047] The electric push rod 17 drives the arc-shaped gear ring 2 16 to move, so that the arc-shaped gear ring 2 16 and the arc-shaped gear ring 1 15 form a complete arc-shaped structure, causing the gear 1 25 to mesh with the complete gear ring, prompting the revolving rotating rod 23 to continue to rotate, thereby promoting the high-temperature decomposition of the residual electrolyte in the waste lithium battery fragments, and continuously turning the material to improve the high-temperature decomposition effect.

[0048] A rotating seat 36 rotatably connected to the centrifugal drum 21 is fixedly mounted on the reciprocating screw 31, and a support plate rotatably connected to the reciprocating screw 31 is fixedly mounted on the centrifugal drum 21. The rotating seat 36 and the support plate are used for stable rotation installation of the reciprocating screw 31. A telescopic tube 37 is fixedly connected between the movable seat 32, the rotating seat 36 and the support plate. The telescopic tube 37 is located on the outside of the reciprocating screw 31 and is used to protect the reciprocating screw 31 while avoiding interference with the movement of the movable seat 32.

[0049] A second telescopic tube 38 is fixedly connected between the rotating seat 36 and the movable seat 32. The second telescopic tube 38 is located outside the corresponding telescopic tube 1 37 and is used to guide and transport the high-temperature gas injected into the push ring 34. A plurality of first air inlet holes are formed on the rotating seat 36. The movable seat 32 is provided with a second air inlet hole communicated with the corresponding connecting tube 33. Both the first air inlet hole and the second air inlet hole are communicated with the space between the second telescopic tube 38 and the first telescopic tube 37.

[0050] High-temperature gas is injected into the collecting cylinder 1 on one side of the centrifugal drum 21 through the air inlet pipe. The high-temperature gas inside the collecting cylinder 1 is injected into the pushing ring 34 through the air inlet hole 1, the telescopic tube 2 38, the air inlet hole 2 and the connecting pipe 33 in sequence, and then discharged into the waste lithium battery fragments attached to the inner wall of the centrifugal drum 21 through a plurality of air outlet holes 35, so as to perform thermal decomposition treatment on the residual electrolyte on the waste lithium battery fragments.

[0051] One side of the centrifugal drum 21 is fixedly connected to a rotating frame 26 that rotates with the arc-shaped gear ring 2 16 through a telescopic sleeve. At least two sets of telescopic sleeves are provided to avoid interference with the movement of the arc-shaped gear ring 2 16 while prompting the centrifugal drum 21 to drive the rotating frame 26 to rotate synchronously. The reciprocating screw 31 is fixedly connected to a gear 3 39. Two sets of gears 2 27 that mesh with each other are rotatably installed on both sides of the gear 3 39 on the rotating frame 26.

[0052] Gear three 39 and arc-shaped gear ring two 16 are meshed with corresponding gear two 27, and the electric push rod 17 drives the arc-shaped gear ring two 16 to move, so that the arc-shaped gear ring two 16 and the arc-shaped gear ring one 15 form a complete arc structure, causing the revolving rotating rod 23 to continuously rotate, while continuously turning the waste lithium battery fragments, prompting gear three 39 to mesh with corresponding gear two 27, and the centrifugal drum 21 cooperates with the telescopic sleeve to drive the rotating frame 26 to rotate, thereby prompting the two sets of gears two 27 to rotate, and driving gear three 39 to carry the reciprocating screw rod 31 to rotate.

[0053] Example 3: Please refer to Figure 1-Figure 9 As shown, the present invention also provides a method for recycling waste lithium batteries, comprising the following steps:

[0054] Step 1: The drainage centrifugal recovery process of the electrolyte, the specific process is as follows: the waste lithium battery fragments are placed inside the centrifugal drum 21, the motor 12 drives the driving sprocket 13 to rotate, and combines with the driven sprocket 24 and the chain 14 to drive the centrifugal drum 21 to rotate, and the electrolyte in the waste lithium battery fragments is centrifugally separated, and the electrolyte is centrifugally discharged from the centrifugal drum 21 through the filter holes on the arc filter plate 22, and is blocked and collected by the collecting drum 1;

[0055] During the centrifugation process, the electrolyte splashing upward passes through the gap between two adjacent groups of water retaining blocks 11 and the guidance of the water retaining blocks 11, so that the electrolyte enters the concave side of the lower corner of the adjacent side water retaining blocks 11, and enters the water guide plate 18 through the guiding slope on the water retaining blocks 11, and then falls to the bottom of the collecting cylinder 1 without contact with the centrifugal drum 21, and is discharged through the drain pipe;

[0056] Step 2: Dynamic centrifugal treatment of lithium battery scraps, the specific process is as follows: the rotation of the centrifugal drum 21 is used to drive multiple rotating rods 23 to revolve, and during the revolution, the gear 25 on the rotating rod 23 intermittently engages with the arc-shaped gear ring 15, prompting the rotating rod 23 to intermittently carry the material-pickling plate to rotate synchronously, and the waste lithium battery scraps centrifugally attached to the inner wall of the centrifugal drum 21 are moved, further assisting the centrifugal discharge of the electrolyte on the waste lithium battery scraps;

[0057] Step 3: efficient thermal decomposition of the residual electrolyte, the specific process is as follows: high-temperature gas is injected into the collecting cylinder 1 on one side of the centrifugal drum 21 through the air inlet pipe, and the high-temperature gas in the collecting cylinder 1 is injected into the push ring 34 through the air inlet hole 1, the telescopic tube 2 38, the air inlet hole 2 and the connecting pipe 33 in sequence, and then discharged into the waste lithium battery fragments attached to the inner wall of the centrifugal drum 21 through a plurality of air outlet holes 35, and the residual electrolyte on the waste lithium battery fragments is thermally decomposed;

[0058] The electric push rod 17 drives the arc gear ring 2 16 to move, so that the arc gear ring 2 16 and the arc gear ring 1 15 form a complete arc structure, causing the revolving rotating rod 23 to continuously rotate, while continuously turning the waste lithium battery fragments, prompting the gear three 39 to engage with the corresponding gear two 27, and the centrifugal drum 21 cooperates with the telescopic sleeve to drive the rotating frame 26 to rotate, thereby prompting the two sets of gears two 27 to rotate, and driving the gear three 39 to carry the reciprocating screw rod 31 to rotate. The rotating reciprocating screw rod 31 cooperates with the limiting rod to prompt the movable seat 32 to carry the pushing ring 34 to reciprocate, and the residual electrolyte on the waste lithium battery fragments is subjected to comprehensive close-contact rapid thermal decomposition treatment.

[0059] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A recycling device for waste lithium batteries, comprising a collecting cylinder (1), characterized in that: A dynamic centrifugal mechanism (2) is arranged in the collecting cylinder (1), and the dynamic centrifugal mechanism (2) comprises a centrifugal drum (21) rotatably mounted inside the collecting cylinder (1), a plurality of arc-shaped filter plates (22) are mounted on the annular outer wall of the centrifugal drum (21), a plurality of rotating rods (23) are rotatably mounted inside the centrifugal drum (21), and a material-discharging plate is mounted on the rotating rods (23), and a plurality of water retaining blocks (11) are mounted on the top of the collecting cylinder (1); An auxiliary air outlet mechanism (3) is installed inside the centrifugal drum (21), and the auxiliary air outlet mechanism (3) comprises a reciprocating screw (31) rotatably installed inside the centrifugal drum (21), and a movable seat (32) is threadedly connected to the reciprocating screw (31), and the movable seat (32) is connected to a push ring (34) through a plurality of connecting tubes (33), and a plurality of air outlet holes (35) communicating with the interior of the push ring (34) are formed on both sides of the push ring (34), and a limit rod that slides with the connecting tube (33) is fixed inside the centrifugal drum (21).

2. A waste lithium battery recycling device according to claim 1, characterized in that: A driven sprocket (24) is fixedly mounted on the centrifugal drum (21); a motor (12) is mounted on the bottom of the collecting drum (1) via bolts; a driving sprocket (13) is mounted on the output shaft of the motor (12); the driving sprocket (13) and the driven sprocket (24) are connected via a chain (14); a gear (25) is mounted on one end of the rotating rod (23); and an arc-shaped gear ring (15) is fixedly connected to the top of the collecting drum (1).

3. A waste lithium battery recycling device according to claim 2, characterized in that: The collecting cylinder (1) is provided with an arc-shaped toothed ring 2 (16) which forms an annular structure with the arc-shaped toothed ring 1 (15), and a guide rod which is fixedly connected to the arc-shaped toothed ring 2 (16) and slidably connected to the arc-shaped toothed ring 2 (16); an electric push rod (17) is mounted on the outer wall of the collecting cylinder (1), and the end of the electric push rod (17) is fixedly connected to the arc-shaped toothed ring 2 (16).

4. The waste lithium battery recycling device according to claim 1, characterized in that: The cross section of the water retaining block (11) is in a Z-shaped structure, and the lower corner of the water retaining block (11) is located below the upper corner of the water retaining block (11) on an adjacent side. A guide slope is provided on the concave side of the lower corner of the water retaining block (11), and a water guide plate (18) connected to the plurality of water retaining blocks (11) is fixedly connected inside the collecting cylinder (1) and located at the lower part of the guide slope.

5. The waste lithium battery recycling device according to claim 1, characterized in that: The top and bottom sides of the collecting cylinder (1) are respectively fixedly connected to an exhaust pipe and a liquid discharge pipe, and one side of the collecting cylinder (1) is fixedly connected to an air intake pipe.

6. The waste lithium battery recycling device according to claim 3, characterized in that: A rotating seat (36) rotatably connected to the centrifugal drum (21) is fixedly mounted on the reciprocating screw rod (31), a supporting plate rotatably connected to the reciprocating screw rod (31) is fixedly mounted on the centrifugal drum (21), and a telescopic tube (37) is fixedly connected between the movable seat (32), the rotating seat (36) and the supporting plate.

7. A waste lithium battery recycling device according to claim 6, characterized in that: A second telescopic tube (38) is fixedly connected between the rotating seat (36) and the movable seat (32); a plurality of first air inlet holes are formed through the rotating seat (36); and a second air inlet hole communicating with a corresponding connecting tube (33) is formed on the movable seat (32).

8. The waste lithium battery recycling device according to claim 6, characterized in that: One side of the centrifugal drum (21) is fixedly connected to a rotating frame (26) that rotates with the arc-shaped gear ring 2 (16) via a telescopic sleeve rod, and the reciprocating screw (31) is fixedly connected to a gear 3 (39). Two sets of gear 2 (27) that mesh with each other are rotatably mounted on both sides of the gear 3 (39) on the rotating frame (26).

9. A method for recycling waste lithium batteries, using a waste lithium battery recycling device as claimed in any one of claims 1 to 8, characterized in that: It includes the following contents: the drainage centrifugal recovery process of the electrolyte, the dynamic centrifugal treatment of the lithium battery fragments and the efficient thermal decomposition of the residual electrolyte.

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