Lithium battery recycling and drying treatment device

Abstract

The invention relates to a lithium battery recycling and drying treatment device, and relates to the technical field of lithium battery recycling, the lithium battery recycling and drying treatment device comprises a tank body, the top of the tank body is communicated with a feeding pipe, the bottom of the tank body is provided with a discharging port, and the inner wall of the tank body is fixedly provided with a fixing rod extending inwards; a fixed pipe is vertically and fixedly arranged at one end, far away from the inner wall of the tank body, of the fixed rod; a rotating shaft is vertically and rotatably arranged in the tank body, a first motor is arranged on the tank body, and the first motor is used for driving the rotating shaft to rotate; the rotating shaft penetrates through the fixing pipe, a first spiral blade is fixedly arranged on the rotating shaft, the outer wall of the first spiral blade is attached to the inner wall of the fixing pipe, and the bottom of the first spiral blade extends out of the fixing pipe; a heating assembly is further arranged on the tank body and used for heating the interior of the tank body. The metal salt drying device has the effects that the metal salt is prevented from being in a static state for a long time in the drying process, and the drying time of the metal salt is shortened.

Description

Technical Field

[0001] This application relates to the technical field of lithium battery recycling, and particularly to a drying treatment device for lithium battery recycling. Background Art

[0002] Since the birth of lithium batteries in 1990, they have gradually replaced secondary batteries such as lead-acid batteries, nickel-cadmium batteries, and nickel-metal hydride batteries in just over two decades. Currently, a large number of lithium batteries are produced globally every year. If reasonable technologies are not used to standardize the treatment of scrapped lithium batteries, it will seriously harm the environment where humans live.

[0003] In the prior art, it is usually to recycle rare metals in waste lithium batteries to treat waste lithium batteries. Before extraction, the lithium batteries are crushed and acid-leached to dissolve the substances in the lithium batteries, and then a series of reactants are added to obtain the required rare metal salts. Then, the metal salts are filtered out and dried. When processing on a large scale in a factory, the metal salts are usually directly transported to a drying bin by a conveyor belt for drying.

[0004] However, during the drying process, the metal salts generally remain stationary, and the inside of the metal salts cannot be thoroughly dried in a short time. After long-term drying, the outer layer of the metal salts will condense and harden, affecting the storage and use of the extracted metal salts. Summary of the Invention

[0005] In order to prevent the metal salts from remaining stationary for a long time during the drying process and reduce the drying time of the metal salts, this application provides a drying treatment device for lithium battery recycling.

[0006] A drying treatment device for lithium battery recycling provided by this application adopts the following technical solutions: A drying treatment device for lithium battery recycling includes a tank body. A feed pipe is connected to the top of the tank body, and a discharge port is provided at the bottom of the tank body. A fixing rod extending inward is fixedly arranged on the inner wall of the tank body. The end of the fixing rod far from the inner wall of the tank body is vertically and fixedly provided with a fixing pipe. A rotating shaft is vertically and rotatably arranged in the tank body. A first motor is arranged on the tank body, and the first motor is used to drive the rotating shaft to rotate. The rotating shaft passes through the fixing pipe. A first spiral blade is fixedly arranged on the rotating shaft. The outer wall of the first spiral blade is in contact with the inner wall of the fixing pipe, and the bottom of the first spiral blade extends out of the fixing pipe. A heating component is also arranged on the tank body, and the heating component is used to heat the inside of the tank body.

[0007] By adopting the above technical solution, before drying and processing, the metal salt is fed into the tank body from the feed pipe, and the metal salt falls to the bottom of the tank body. During drying and processing, the heating component heats the inside of the tank body to raise the temperature of the air inside the tank body; the first motor drives the rotating shaft to rotate, and the rotating shaft drives the first spiral blade to rotate synchronously in the fixed pipe. The closed space formed by the spiral blade and the pipe wall conveys the metal salt from bottom to top. On the one hand, it makes the metal salt move continuously and fall continuously from the top of the fixed pipe, and the metal salt is no longer concentrated at the bottom of the tank body, increasing the contact area between the metal salt and the high-temperature air in the tank body; on the other hand, during the continuous falling process of the metal salt, it impacts the bottom of the tank body to prevent the metal salt from condensing and hardening, thereby preventing the metal salt from being in a static state for a long time during the drying process and reducing the drying time of the metal salt.

[0008] Preferably, the top of the fixed pipe is fixedly connected and communicated with a storage cavity. A plurality of outer dispersion cylinders are evenly and spaced along the circumferential direction on the side wall of the storage cavity. The end of the outer dispersion cylinder is fixedly connected to and communicated with the storage cavity. A blanking hole is opened at the bottom of the outer dispersion cylinder; a guiding shaft is rotatably arranged in the outer dispersion cylinder, and a second spiral blade is fixedly arranged on the guiding shaft. The outer wall of the second spiral blade is attached to the inner wall of the outer dispersion cylinder. A driving component is further arranged on the tank body, and the driving component is used to drive the guiding shaft to rotate.

[0009] By adopting the above technical solution, the metal salt conveyed from the fixed pipe will first enter the storage cavity. The driving component drives the guiding shaft to rotate, and the guiding shaft drives the second spiral blade to rotate in the outer dispersion cylinder. Since the outer wall of the second spiral blade is attached to the inner wall of the outer dispersion cylinder, the second spiral blade will convey the metal salt in the storage cavity along the outer dispersion cylinder, and the metal salt moves away from the storage cavity; the metal salt falls out through the blanking hole at the bottom of the outer dispersion cylinder. In this way, after the metal salt gradually moves away from the storage cavity and falls, the metal salt is radially dispersed into the tank body space, further dispersing the distribution range of the metal salt in the tank body. The metal salt can come into contact with the high-temperature air more fully during the falling process, further increasing the contact area between the metal salt and the high-temperature air, enabling the metal salt to be dried more evenly and quickly.

[0010] Preferably, the driving component includes a first bevel gear and a bevel gear ring. One end of the guiding shaft away from the storage cavity penetrates through the outer wall of the tank body and is fixedly coaxial with the first bevel gear. The bevel gear ring is sleeved and rotatable on the outer wall of the tank body, and all the first bevel gears are meshed with the bevel gear ring.

[0011] By adopting the above technical solution, when it is necessary to drive the guide shaft to rotate, since all the first bevel gears are meshed with the bevel gear ring, it is only necessary to rotate the bevel gear ring to drive all the first bevel gears to rotate synchronously, thereby causing all the guide shafts to rotate synchronously; at the same time, all the guide shafts are rotated synchronously so that the rotation speed of all the guide shafts is consistent, which can ensure that the metal salt transportation and falling process in each outer bulk barrel is more uniform, making the distribution of the metal salt in the tank body more balanced, which is beneficial to improving the drying effect.

[0012] Preferably, the drive assembly also includes a gear ring, a driving gear, and a second motor. The gear ring is sleeved and rotated on the outer wall of the tank body and fixedly connected to the bevel gear ring; the second motor is fixed outside the tank body, the driving gear is coaxially fixed with the driving shaft of the second motor, and the driving gear and the gear ring are meshed with each other.

[0013] By adopting the above technical solution, after the second motor is started, the driving shaft of the second motor drives the driving gear to rotate. Since the driving gear and the gear ring are meshed with each other, the rotation of the driving gear will drive the gear ring to rotate. Since the gear ring is fixedly connected to the bevel gear ring, the bevel gear ring will rotate with the gear ring.

[0014] Preferably, a detector is provided in the storage chamber, and the detector is used to detect the amount of metal salt in the storage chamber, and the detector is electrically connected to the first motor and the second motor.

[0015] By adopting the above technical solution, when the detector detects that the metal salt in the storage chamber reaches the preset threshold upper limit, the speed of the first motor is reduced to speed up the spiral conveying efficiency in the fixed tube, or the speed of the second motor is increased to quickly discharge the metal salt in the storage chamber, so as to avoid excessive accumulation of metal salt in the storage chamber as much as possible.

[0016] Preferably, a scattering ring is sleeved on the outer wall of the fixed tube and rotates, and a plurality of scattering rods extending outward are fixedly provided on the scattering ring, and all the scattering rods are evenly and spacedly distributed in the circumferential direction of the scattering ring. A scattering assembly is also provided on the fixed tube, and the scattering assembly is used to drive the scattering ring to rotate.

[0017] By adopting the above technical solution, the scattering component drives the scattering ring to rotate, driving the scattering rod to form a rotating scattering area on the periphery of the fixed tube. When the metal salt falls out of the storage chamber, the scattering rod collides with the falling metal salt clumps, and disperses the aggregated metal salt clumps into smaller particles. The formation of large condensates of metal salt is avoided as much as possible. At the same time, the metal salt after being dispersed is more fully in contact with the high-temperature air, further improving the drying efficiency of the metal salt surface and shortening the time required for drying.

[0018] Preferably, the dispersing assembly includes a connecting ring. A connecting groove is formed in the fixed pipe. The connecting ring is rotatably arranged in the connecting groove. The inner wall of the connecting ring is flush with the inner wall of the fixed pipe. The inner wall of the connecting ring is fixedly connected to the outer wall of the first spiral blade. The outer wall of the connecting ring is fixedly connected to the dispersing ring.

[0019] By adopting the above technical solution, when the first spiral blade rotates, it drives the dispersing ring to rotate synchronously through the connecting ring, without the need to additionally set a driving mechanism, and directly utilizes the power of the rotating shaft to achieve the dispersing function, which simplifies the device structure and reduces energy consumption; the inner wall of the connecting ring is flush with the inner wall of the fixed pipe, ensuring that the metal salt is smoothly transported in the fixed pipe and avoiding the retention or accumulation of the metal salt due to the inner wall protrusion.

[0020] Preferably, a set of dispersing rings is arranged at intervals on the fixed pipe. One of the dispersing rings is fixedly connected to the connecting ring. The dispersing assembly further includes a second bevel gear and an intermediate bevel gear. The second bevel gear is coaxially fixed to the dispersing ring. The second bevel gear is located on one side where the two dispersing rings are close to each other. The intermediate bevel gear rotates on the side wall of the fixed pipe. One side of the intermediate bevel gear meshes with one of the second bevel gears, and the other side of the intermediate bevel gear meshes with the other second bevel gear.

[0021] By adopting the above technical solution, when the first spiral blade drives one of the dispersing rings to rotate through the connecting ring, the second bevel gear rotates synchronously, and through the meshing transmission of the intermediate bevel gear, it drives the other dispersing ring to rotate in the opposite direction; the two sets of dispersing rings rotate in opposite directions, so that the corresponding dispersing rods form an intersecting impact motion area, generating impact effects in different directions on the falling metal salt, and can more efficiently break the metal salt agglomerates.

[0022] Preferably, the heating assembly includes a fan, a wind guide chamber, and an electric heating wire. The wind guide chamber surrounds the tank body and is fixedly connected to the tank body. The electric heating wire is fixed in the wind guide chamber. A plurality of air holes communicating the wind guide chamber with the inside of the tank body are formed in the tank body. The fan is arranged outside the tank body and is communicated with the wind guide chamber. An air outlet pipe is fixedly connected and communicated with the top of the tank body.

[0023] By adopting the above technical solution, after the fan is started, dry air outside the tank body is conveyed to the wind guide chamber, and the electric heating wire heats the air in the wind guide chamber. Then, the hot air enters the inside of the tank body through a plurality of air holes formed in the tank body, providing heat for drying the metal salt in the tank body; since the wind guide chamber surrounds the tank body, the hot air can enter the inside of the tank body from multiple directions and multiple positions of the tank body, enabling the metal salt to fully contact the hot air at each part, increasing the contact area and contact uniformity between the metal salt and the hot air, reducing the drying dead angle, and improving the drying efficiency; in addition, the air outlet pipe discharges the humid air in the tank body.

[0024] Preferably, a first filter screen is fixedly arranged in the air holes, and a second filter screen is fixedly arranged at the bottom of the air outlet pipe.

[0025] By adopting the above technical solution, during the process that the fan sends hot air into the air guide bin and enters the inside of the tank through the air holes, the first filter screen can block the entry of external dust, impurities, etc. into the tank; at the same time, it can also prevent the metal salt from detaching from the tank through the air holes; the second filter screen is fixed at the bottom of the air outlet pipe, effectively preventing the metal salt particles from escaping from the air outlet pipe along with the discharged moisture and hot air.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. By setting the fixing rod, fixing pipe, rotating shaft, first motor, first spiral blade, and heating component, the metal salt is conveyed from bottom to top and circulates and falls by the rotation of the first spiral blade, so that the metal salt continuously moves and fully contacts with the high-temperature air, and at the same time, it prevents condensation by falling and hitting the bottom of the tank, significantly improving the drying efficiency and shortening the drying time; 2. By setting the storage cavity, outer dispersion cylinder, guiding shaft, second spiral blade, driving component, first bevel gear, bevel gear ring, gear ring, driving gear, and second motor, after the metal salt enters the outer dispersion cylinder through the storage cavity, it is evenly dispersed in the radial direction by the synchronously rotating second spiral blade, forming a radial falling trajectory, further expanding the contact area with the hot air, and further improving the drying effect; 3. By setting the dispersion ring, dispersion rod, dispersion group, connecting ring, connecting groove, second bevel gear, and intermediate bevel gear, the rotation of the dispersion ring is driven by the power of the rotating shaft, and the agglomerated metal salt is impacted by the bidirectionally rotating dispersion rods, breaking up the agglomerated metal salt and enhancing the dispersion effect, reducing the condensation risk from the source and improving the drying uniformity. Description of the Drawings

[0027] Figure 1 It is a schematic structural diagram of a lithium battery recycling and drying treatment device provided in an embodiment of the present application.

[0028] Figure 2 is Figure 1 An enlarged view of part A in

[0029] Figure 3 It is a schematic sectional view of a lithium battery recycling and drying treatment device provided in an embodiment of the present application.

[0030] Figure 4 is Figure 3 An enlarged view of part B in

[0031] Description of reference numerals: 1. Tank body; 11. Feed pipe; 12. Discharge port; 13. Fixed rod; 14. Fixed pipe; 141. Dispersing ring; 142. Dispersing rod; 143. Connecting groove; 15. Storage cavity; 151. Detector; 16. Air hole; 161. First filter screen; 17. Air outlet pipe; 171. Second filter screen; 2. First motor; 21. Rotating shaft; 22. First spiral blade; 3. Heating assembly; 31. Fan; 32. Air guide chamber; 33. Electric heating wire; 4. Outer dispersion cylinder; 41. Guide shaft; 42. Second spiral blade; 43. Material dropping hole; 5. Driving assembly; 51. First bevel gear; 52. Bevel gear ring; 53. Gear ring; 54. Driving gear; 55. Second motor; 6. Dispersing assembly; 61. Connecting ring; 62. Second bevel gear; 63. Intermediate bevel gear. Detailed implementation manners

[0032] The following further describes the present application in detail with reference to Figures 1-4 the accompanying drawings.

[0033] An embodiment of the present application discloses a lithium battery recycling and drying device. Refer to Figure 1 , which includes a tank body 1. Supporting legs for supporting the tank body 1 are fixed at the bottom of the tank body 1, and the bottom wall of the tank body 1 is conical. A feed pipe 11 is communicated with the top of the tank body 1, and a discharge port 12 is provided at the exact center of the bottom of the tank body 1.

[0034] Refer to Figure 2 and Figure 3 , a heating assembly 3 is further arranged on the tank body 1, and the heating assembly 3 is used for heating the inside of the tank body 1. Specifically, the heating assembly 3 includes a fan 31, an air guide chamber 32, and an electric heating wire 33. The air guide chamber 32 is arranged around the tank body 1 and fixedly connected to the side wall of the tank body 1, and the electric heating wire 33 is fixed in the air guide chamber 32. A plurality of air holes 16 communicating the air guide chamber 32 with the inside of the tank body 1 are formed in the side wall of the tank body 1, and the air holes 16 are evenly and spacedly arranged in the circumferential direction of the side wall of the tank body 1. A first filter screen 161 is fixedly arranged in the air holes 16. The fan 31 is arranged outside the tank body 1 and communicated with the air guide chamber 32. The fan 31 inputs the air outside the tank body 1 into the air guide chamber 32, and the air is heated by the electric heating wire 33 into high-temperature air. The high-temperature air flows along the air guide chamber 32 and blows into the inside of the tank body 1 from the air holes 16 at different positions. An air outlet pipe 17 is fixedly connected and communicated with the top of the tank body 1, and a second filter screen 171 is fixedly arranged at the bottom of the air outlet pipe 17. The humid air in the tank body 1 is discharged from the air outlet pipe 17.

[0035] Refer to Figure 2 and Figure 3, a number of fixing rods 13 extending inwards are fixedly arranged on the inner wall of the tank body 1. The end of the fixing rod 13 far from the inner wall of the tank body 1 is vertically and fixedly provided with a fixing pipe 14. The axis of the fixing pipe 14 coincides with the axis of the tank body 1. A rotating shaft 21 is vertically and rotatably arranged in the tank body 1. A first motor 2 is arranged on the tank body 1, and the first motor 2 is used to drive the rotating shaft 21 to rotate. Specifically, the first motor 2 is fixed on the top of the tank body 1, and the driving shaft of the first motor 2 penetrates through the top wall of the tank body 1 and is coaxially fixed with the rotating shaft 21. The rotating shaft 21 passes through the fixing pipe 14, and a first spiral blade 22 is fixedly arranged on the rotating shaft 21. The outer wall of the first spiral blade 22 is attached to the inner wall of the fixing pipe 14, and the bottom of the first spiral blade 22 extends out of the fixing pipe 14.

[0036] Refer to Figure 2 And Figure 3 , before the drying process, the metal salt is fed into the tank body 1 from the feed pipe 11. During the drying process, the air guiding chamber 32 inputs high-temperature air into the tank body 1. The first motor 2 drives the rotating shaft 21 to rotate, and the rotating shaft 21 drives the first spiral blade 22 to rotate in the fixing pipe 14. The closed space formed by the first spiral blade 22 and the fixing pipe 14 conveys the metal salt from bottom to top, so that the metal salt moves continuously and falls continuously from the top of the fixing pipe 14. The high-temperature air blows on the falling metal salt, increasing the air flow velocity and temperature on the surface of the metal salt, and increasing the contact area between the metal salt and the high-temperature air, so that the metal salt is quickly dried. At the same time, during the falling process of the metal salt, it will impact the bottom of the tank body 1, preventing the metal salt blocks from combining into one body for a long time and finally coagulating and hardening, thereby preventing the metal salt from being in a static state for a long time during the drying process and reducing the drying time of the metal salt.

[0037] In order to further increase the contact area between the metal salt and the high-temperature air, refer to Figure 3 And Figure 4 , a storage cavity 15 is fixedly connected and communicated at the top of the fixing pipe 14. A number of outer dispersion cylinders 4 are evenly and spaced along the circumferential direction on the side wall of the storage cavity 15. The axis of the outer dispersion cylinder 4 is parallel to the radius of the tank body 1. One end of the outer dispersion cylinder 4 is fixedly connected to the storage cavity 15 and is in communication with each other. A material falling hole 43 is opened at the bottom of the outer dispersion cylinder 4. The material falling hole 43 is opened along the axis direction of the outer dispersion cylinder 4, and the width of the material falling hole 43 gradually increases along the direction away from the storage cavity 15. A guiding shaft 41 is rotatably arranged in the outer dispersion cylinder 4, and a second spiral blade 42 is fixedly arranged on the guiding shaft 41. The outer wall of the second spiral blade 42 is attached to the inner wall of the outer dispersion cylinder 4. Specifically, one end of the second spiral blade 42 extends into the storage cavity 15, and the pitch of the second spiral blade 42 gradually decreases along the direction away from the storage cavity 15.

[0038] Refer to Figure 3 And Figure 4, a driving assembly 5 is further provided on the tank body 1, and the driving assembly 5 is used to drive the guiding shaft 41 to rotate. Specifically, the driving assembly 5 includes a first bevel gear 51, a bevel gear ring 52, a gear ring 53, a driving gear 54, and a second motor 55. One end of the guiding shaft 41 away from the storage cavity 15 penetrates through the outer wall of the tank body 1 and is fixedly connected coaxially with the first bevel gear 51. The bevel gear ring 52 is sleeved and rotates on the outer wall of the tank body 1, and all the first bevel gears 51 are meshed with the bevel gear ring 52. The gear ring 53 is sleeved and rotates on the outer wall of the tank body 1 and is fixedly connected with the bevel gear ring 52. The second motor 55 is fixed outside the tank body 1, the driving gear 54 is fixedly connected coaxially with the driving shaft of the second motor 55, and the driving gear 54 is meshed with the gear ring 53.

[0039] Refer to Figure 3 And Figure 4 , the second motor 55 drives the gear ring 53 to rotate through the driving gear 54, so as to drive the bevel gear ring 52 to rotate, and further synchronously rotate all the first bevel gears 51 meshed with the bevel gear ring 52, driving the guiding shaft 41 and the second spiral blade 42 to rotate. The pitch of the second spiral blade 42 gradually decreases from the storage cavity 15 to the outside, and the metal salt can be gradually pushed along the outer dispersion cylinder 4 to the end far from the storage cavity 15. During the process of pushing the metal salt, the metal salt continuously falls out from the material dropping holes 43. The width of the material dropping holes 43 gradually increases towards the end far from the storage cavity 15, and at the same time, in cooperation with the change of the extrusion force generated by the change of the pitch of the second spiral blade 42, more metal salt near the inner wall of the tank body 1 drops. On the one hand, a large amount of metal salt can come into contact with the high-temperature air just entering the tank body 1 for the first time, and the humidity of the high-temperature air at this time is the lowest. On the other hand, after the metal salt near the inner wall of the tank body 1 drops back to the bottom of the tank body 1, it is located at the farthest position from the first spiral blade 22, so that the metal salt that has not been conveyed by the first spiral blade 22 can be preferentially conveyed by the first spiral blade 22, improving the orderliness of the drying process. In this way, after the metal salt detaches from the fixed pipe 14, it does not drop concentrated near the fixed pipe 14, but is conveyed to different radial positions of the tank body 1 to drop, making full use of the internal space of the tank body 1 and further increasing the contact area between the metal salt and the high-temperature air.

[0040] Refer to Figure 4 , a detector 151 is arranged in the storage cavity 15, and the detector 151 is electrically connected to the first motor 2 and the second motor 55. The detector 151 monitors the amount of metal salt in the storage cavity 15 in real time, and the detector 151 can adopt a capacitive sensor. When it is detected that the amount of metal salt exceeds the preset threshold, the first motor 2 reduces the rotation speed to reduce the feeding amount of the fixed pipe 14, or the second motor 55 increases the rotation speed to accelerate the discharging of the outer dispersion cylinder 4, and tries to avoid the blockage of the storage cavity 15. On the contrary, when the amount of metal salt is too low, the first motor 2 speeds up and the second motor 55 slows down to ensure the continuous and stable supply of the metal salt.

[0041] To further prevent the metal salt from forming large coagulates, refer to Figure 3 and Figure 4 , a set of dispersing rings 141 are sleeved on and rotatably arranged on the outer wall of the fixed tube 14. The set of dispersing rings 141 are spaced apart in the vertical direction. A number of outwardly extending dispersing rods 142 are fixedly arranged on the dispersing rings 141. All the dispersing rods 142 are evenly and spaced apart in the circumferential direction of the dispersing rings 141.

[0042] Refer to Figure 3 and Figure 4 , a dispersing assembly 6 is further arranged on the fixed tube 14. The dispersing assembly 6 is used to drive the dispersing rings 141 to rotate. Specifically, the dispersing assembly 6 includes a connecting ring 61, a second bevel gear 62, and an intermediate bevel gear 63. A connecting groove 143 is formed on the fixed tube 14. The connecting ring 61 is rotatably arranged in the connecting groove 143. The inner wall of the connecting ring 61 is flush with the inner wall of the fixed tube 14. The inner wall of the connecting ring 61 is fixedly connected to the outer wall of the first spiral blade 22. The outer wall of the connecting ring 61 is fixedly connected to one of the dispersing rings 141. The height of the inner wall of the connecting ring 61 is less than the pitch of the first spiral blade 22. The second bevel gear 62 is coaxially fixed with the dispersing ring 141. The second bevel gear 62 is located on one side where the two dispersing rings 141 are close to each other. The intermediate bevel gear 63 rotates on the side wall of the fixed tube 14. One side of the intermediate bevel gear 63 meshes with one of the second bevel gears 62, and the other side of the intermediate bevel gear 63 meshes with the other second bevel gear 62.

[0043] Refer to Figure 3 and Figure 4 , the rotation of the first spiral blade 22 will drive the connecting ring 61 to rotate in the connecting groove 143 and drive one of the dispersing rings 141 to rotate. One of the dispersing rings 141 drives the second bevel gear 62 coaxially fixed thereto to rotate. The second bevel gear 62 is meshed and driven with the other second bevel gear 62 through the intermediate bevel gear 63, so that the other dispersing ring 141 rotates in the reverse direction. In this way, a set of dispersing rings 141 rotate in the reverse direction, and the dispersing rods 142 on the two dispersing rings 141 will also rotate in the reverse direction with the dispersing rings 141, forming an intersecting rotation area. When the metal salt falls, the dispersing rods 142 impact the falling metal salt mass, dispersing the aggregated metal salt blocks into smaller metal salt particles; as much as possible, the formation of large coagulates of the metal salt is avoided; at the same time, the dispersed metal salt is in more sufficient contact with the air, further improving the drying efficiency of the metal salt surface and shortening the drying time required.

[0044] The implementation principle of a lithium battery recycling drying device in an embodiment of this application is as follows: Metal salts enter the tank body 1 through the feed pipe 11. The fan 31 is started to input dry air outside the tank body 1 into the air guide chamber 32, and the heating wire 33 heats the dry air. The dry high-temperature air is blown into the tank body 1 from multiple directions through the air holes 16. At the same time, the wet air is discharged through the air outlet pipe 17 to form an air flow cycle. The first motor 2 drives the rotating shaft 21 and the first spiral blade 22 to rotate, and conveys the metal salts from bottom to top to the storage cavity 15 at the top of the fixed pipe 14. While the first spiral blade 22 rotates, it drives one of the dispersing rings 141 to rotate through the connecting ring 61. The other dispersing ring 141 rotates in the opposite direction under the transmission of two second bevel gears 62 and the intermediate bevel gear 63, and the dispersing rods 142 on the two dispersing rings 141 make a swinging motion in the opposite direction. Then, the second motor 55 drives the gear ring 53 and the bevel gear ring 52 to rotate through the driving gear 54. The bevel gear ring 52 meshes with all the first bevel gears 51 to drive the guide shafts 41 and the second spiral blades 42 in all the outer dispersion cylinders 4 to rotate, and convey the metal salts in the storage cavity 15 along the outer dispersion cylinders 4, and the metal salts fall out from the material dropping holes 43. During the falling process of the metal salts, the dispersing rods 142 break up the large-volume lumps in the falling metal salts into fine particles, and the fine metal salt particles are fully contacted and dried with the high-temperature air from multiple directions. In this way, it is prevented that the metal salts are in a static state for a long time during the drying process, and the drying time of the metal salts is reduced.

[0045] The above are all the preferred embodiments of this application, and the protection scope of this application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. A lithium battery recycling and drying device, comprising a tank body (1), the top of the tank body (1) is connected to a feed pipe (11), and the bottom of the tank body (1) is provided with a discharge port (12), characterized in that: A fixing rod (13) extending inward is fixedly arranged on the inner wall of the tank body (1), and a fixing tube (14) is vertically and fixedly arranged at one end of the fixing rod (13) away from the inner wall of the tank body (1); a rotating shaft (21) is vertically and rotatably arranged in the tank body (1), and a first motor (2) is arranged on the tank body (1), and the first motor (2) is used to drive the rotating shaft (21) to rotate; the rotating shaft (21) passes through the fixing tube (14), and a first spiral leaf (22) is fixedly arranged on the rotating shaft (21), the outer wall of the first spiral leaf (22) is in contact with the inner wall of the fixing tube (14), and the bottom of the first spiral leaf (22) protrudes from the fixing tube (14); a heating component (3) is also arranged on the tank body (1), and the heating component (3) is used to heat the inside of the tank body (1).

2. A lithium battery recovery and drying treatment device according to claim 1, characterized in that: The top of the fixed tube (14) is fixed and connected to a storage chamber (15); a plurality of outer cylinders (4) are evenly and spacedly distributed on the side wall of the storage chamber (15) in a circumferential direction; the ends of the outer cylinders (4) are fixedly connected to the storage chamber (15) and are connected to each other; a material drop hole (43) is provided at the bottom of the outer cylinder (4); a guide shaft (41) is rotatably arranged inside the outer cylinder (4); a second spiral blade (42) is fixedly arranged on the guide shaft (41); the outer wall of the second spiral blade (42) is in contact with the inner wall of the outer cylinder (4); a driving assembly (5) is also arranged on the tank body (1); the driving assembly (5) is used to drive the guide shaft (41) to rotate.

3. A lithium battery recovery and drying treatment device according to claim 2, characterized in that: The driving assembly (5) comprises a first bevel gear (51) and a bevel gear ring (52); the guide shaft (41) passes through the outer wall of the tank body (1) at the end away from the storage chamber (15) and is coaxially fixed with the first bevel gear (51); the bevel gear ring (52) is sleeved on and rotated on the outer wall of the tank body (1); and all the first bevel gears (51) are meshed with the bevel gear ring (52).

4. A lithium battery recovery and drying treatment device according to claim 3, characterized in that: The driving assembly (5) further comprises a gear ring (53), a driving gear (54), and a second motor (55); the gear ring (53) is sleeved and rotatably mounted on the outer wall of the tank body (1), and is fixedly connected to the bevel gear ring (52); the second motor (55) is fixed outside the tank body (1); the driving gear (54) is coaxially fixed with a driving shaft of the second motor (55); and the driving gear (54) and the gear ring (53) are meshed with each other.

5. A lithium battery recovery and drying treatment device according to claim 4, characterized in that: A detector (151) is provided in the storage chamber (15), and the detector (151) is used to detect the amount of metal salt in the storage chamber (15). The detector (151) is electrically connected to the first motor (2) and the second motor (55).

6. A lithium battery recovery and drying treatment device according to claim 1, characterized in that: A scattering ring (141) is sleeved on the outer wall of the fixed tube (14) and rotates. A plurality of scattering rods (142) extending outward are fixedly arranged on the scattering ring (141). All the scattering rods (142) are evenly and spacedly distributed in the circumferential direction of the scattering ring (141). A scattering assembly (6) is also arranged on the fixed tube (14). The scattering assembly (6) is used to drive the scattering ring (141) to rotate.

7. A lithium battery recovery and drying treatment device according to claim 6, characterized in that: The breaking up assembly (6) comprises a connecting ring (61), a connecting groove (143) is provided on the fixed tube (14), the connecting ring (61) is rotatably arranged in the connecting groove (143), the inner wall of the connecting ring (61) is flush with the inner wall of the fixed tube (14), the inner wall of the connecting ring (61) is fixedly connected to the outer wall of the first spiral blade (22), and the outer wall of the connecting ring (61) is fixedly connected to the breaking up ring (141).

8. A lithium battery recovery and drying treatment device according to claim 7, characterized in that: The scattering rings (141) are arranged in a group at intervals on the fixed tube (14), wherein one of the scattering rings (141) is fixedly connected to the connecting ring (61). The scattering assembly (6) further comprises a second bevel gear (62) and an intermediate bevel gear (63). The second bevel gear (62) is coaxially fixed to the scattering ring (141). The second bevel gear (62) is located on a side of the two scattering rings (141) close to each other. The intermediate bevel gear (63) rotates on the side wall of the fixed tube (14). One side of the intermediate bevel gear (63) is meshed with one of the second bevel gears (62), and the other side of the intermediate bevel gear (63) is meshed with the other second bevel gear (62).

9. A lithium battery recovery and drying treatment device according to claim 1, characterized in that: The heating component (3) comprises a fan (31), an air guide bin (32), and an electric heating wire (33); the air guide bin (32) is arranged around the tank body (1) and is fixedly connected to the tank body (1); the electric heating wire (33) is fixed in the air guide bin (32); the tank body (1) is provided with a plurality of air holes (16) connecting the air guide bin (32) and the interior of the tank body (1); the fan (31) is arranged outside the tank body (1) and is mutually connected with the air guide bin (32); the top of the tank body (1) is fixed and connected with an air outlet pipe (17).

10. A lithium battery recovery and drying treatment device according to claim 9, characterized in that: A first filter screen (161) is fixedly disposed in the air hole (16), and a second filter screen (171) is fixedly disposed at the bottom of the air outlet pipe (17).

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