Magnetic separation device for recycling waste lithium batteries

Abstract

The invention relates to the technical field of waste battery recovery treatment, in particular to a magnetic separation device for waste lithium battery recovery, which comprises a box body, a feed hopper fixedly connected to the box body, a discharge hopper connected to the box body, a discharge frame connected to the bottom of the box body, and a belt assembly arranged between the two sides of the box body, a strong magnetic plate making contact with the inner side of the belt assembly is fixedly connected between the two sides in the box body. Waste lithium battery fragments can be thrown upwards through an electric material throwing plate, a strong magnetic plate attracts metal in waste lithium batteries to a belt assembly to complete magnetic separation, the belt assembly rotates reversely to drive the metal to move rightwards to make contact with a material pushing frame, and the material pushing frame moves front and back to push the metal; and the non-metal fragments doped in the metal fall down to complete further separation, so that the metal separated by magnetic separation can be prevented from being doped with the non-metal fragments, and the magnetic separation effect and the purity and quality of the recovered metal are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of waste battery recycling and treatment, and particularly to a magnetic separation device for recycling waste lithium batteries. Background Art

[0002] With the booming development of the new energy industry, lithium batteries, as important energy storage devices, have seen a sharp increase in demand. However, the service life of lithium batteries is limited, and the generation of a large number of waste lithium batteries poses double challenges to the environment and resource utilization. Waste lithium batteries contain valuable metal elements such as nickel, cobalt, and lithium. If they can be effectively recycled and reused, it can not only save resources but also reduce environmental pollution.

[0003] A Chinese patent with the publication number CN117259005B discloses a magnetic separation device for recycling waste lithium batteries, which includes a housing, legs, and a feed hopper installed on the housing. The front and rear sides of the outer bottom of the housing are symmetrically and fixedly connected with legs on the left and right. The lower part of the front side of the housing is open. The outer side of the feed hopper is fixedly connected with a discharge hopper. The feed port of the discharge hopper is located inside the housing. Four buffer springs are evenly spaced and connected to the front side of the inner bottom of the housing. A movable plate for guiding waste lithium batteries is fixedly connected between the ends of the four buffer springs and is located below the feed hopper. Although the above patent can magnetically separate metals in waste lithium batteries, during the magnetic separation process, some metals are adsorbed to each other under the action of strong magnetic force, and sometimes some non-metallic fragments are also adsorbed and transported for collection. This phenomenon causes the non-metallic fragments to be mixed with the metals again, seriously affecting the magnetic separation effect and reducing the purity and quality of the recycled metals.

[0004] The present invention aims to solve the problems existing in the above patent. For this purpose, a magnetic separation device for recycling waste lithium batteries is proposed, which can push the magnetically separated metals to make the doped non-metallic fragments fall off and separate, improving the magnetic separation effect and the purity and quality of the recycled metals. Summary of the Invention

[0005] In order to overcome the disadvantages that some metals are adsorbed to each other under the action of strong magnetic force, and sometimes some non-metallic fragments are also adsorbed and transported for collection. This phenomenon causes the non-metallic fragments to be mixed with the metals again, seriously affecting the magnetic separation effect and reducing the purity and quality of the recycled metals, the present invention provides a magnetic separation device for recycling waste lithium batteries, which can push the magnetically separated metals to make the doped non-metallic fragments fall off and separate, improving the magnetic separation effect and the purity and quality of the recycled metals.

[0006] The present invention is achieved through the following technical means: A magnetic separation device for recycling waste lithium batteries includes a box body and a feed hopper fixed to the box body, a discharge hopper connected to the box body, a discharge frame connected to the bottom of the box body, and a belt assembly arranged between the two sides of the box body. A strong magnetic plate in contact with the inner side of the belt assembly is fixed between the two sides of the box body. The box body is provided with an electric throwing plate located below the belt assembly for throwing the waste lithium batteries to the upper right. A guide rail located below the belt assembly is fixed between the two sides of the box body, and a pusher rack is slidably connected to the inner side of the guide rail. The top of the pusher rack is close to the belt assembly, and a slider fixedly connected to the pusher rack is slidably connected to the guide rail. An electric push rod is installed on the guide rail, and the telescopic rod end of the electric push rod is fixedly connected to the slider to drive the slider to move. The slider drives the pusher rack to move to push the metal magnetically attracted on the belt assembly to make impurities doped in the metal fall off. A receiving assembly is provided on the box body to receive the fallen impurities, and a crushing assembly is provided on the box body to crush and screen the waste lithium batteries entering the box body.

[0007] Further explanation: the belt assembly consists of two conveyor rollers, a flat belt and a motor, wherein the two conveyor rollers are rotatably connected to the box body, the conveyor belt is wound between the two conveyor rollers, the motor is installed on the box body, and the output shaft end of the motor is fixedly connected to the end of one of the conveyor rollers.

[0008] Further explanation, the material receiving assembly includes a mounting plate fixed between the two sides of the box body, the mounting plate is located between the guide rail and the discharge frame, an elastic cloth is fixed between the mounting plate and the inner side of the box body, and an electric cross plate is evenly spaced and rotated on the mounting plate to receive fallen impurities.

[0009] Further explanation, the crushing assembly includes a guide frame fixed between the two sides of the box body, the guide frame is set at an angle, a fixed frame is fixed between the guide frame and the inner side of the box body, and crushing rollers are symmetrically connected between the two sides of the fixed frame for crushing large pieces of waste lithium batteries. The crushing rollers are connected by a spur gear set. A drive motor is installed on the box body, and the output shaft end of the drive motor is fixedly connected to one of the ends of the crushing rollers. A screening assembly is arranged between the guide frame and the box body for screening the waste lithium batteries discharged into the box body.

[0010] Further explanation, the screening assembly includes a screen plate slidably connected to the inner side of the guide frame, and reset springs are evenly spaced between the screen plate and the guide frame. Contact rods are symmetrically fixed to the bottom of the screen plate, and a rotating shaft located on the right side of the contact rod is rotatably connected between the two side surfaces of the box body. The end of the rotating shaft is connected to the end of one of the crushing rollers through a synchronous belt assembly. A cam located on the right side of the contact rod is symmetrically fixed on the rotating shaft to drive the contact rod to move.

[0011] Further description, the magnetic separation device for recycling waste lithium batteries further includes a dust removal component. The dust removal component includes an exhaust frame fixedly penetrating through the box body. An installation frame is fixedly penetrated through the box body. Mesh plates are fixedly connected to the inner sides of the installation frame and the exhaust frame. A blowing fan is fixedly penetrated through the installation frame for blowing the dust on the waste lithium batteries. A heating wire is installed inside the installation frame to heat the air blown out by the blowing fan. A feeding component is arranged on the box body for driving the waste lithium batteries to move inside the box body.

[0012] Further description, the feeding component includes rotating rods rotatably penetrating through the two sides of the box body at equal intervals. Inclined feeding plates are fixedly sleeved on the rotating rods for driving the waste lithium batteries to move left and right for dust removal. Connecting plates are symmetrically rotatably connected between adjacent feeding plates. A stepping motor is installed on the box body, and the end of the output shaft of the stepping motor is fixedly connected to the end of one of the rotating rods.

[0013] Further description, the magnetic separation device for recycling waste lithium batteries further includes a shielding cover fixedly sleeved on the discharge hopper and the discharge frame for shielding the dust generated when discharging the metal and non-metal fragments.

[0014] The remarkable progress of the present invention lies in: 1. The electric throwing plate can throw the waste lithium battery fragments upward, and the strong magnetic plate attracts the metal in the waste lithium batteries onto the belt component to complete magnetic separation. The reverse rotation of the belt component drives the metal to move to the right and contact the pushing frame. The front and back movement of the pushing frame can push the metal, causing the non-metal fragments doped in the metal to fall downward to complete further separation, preventing non-metal fragments from being doped in the magnetically separated metal, thereby improving the magnetic separation effect and the purity and quality of the recycled metal.

[0015] 2. Under the action of the sieve plate and the crushing roller, the waste lithium battery fragments discharged into the box body can be screened, and then the large waste lithium battery fragments screened out are crushed, so that the large waste lithium batteries are crushed into small waste lithium battery fragments. In this way, it can prevent large waste lithium battery fragments from being inconvenient for subsequent magnetic separation, thereby ensuring the smooth magnetic separation of the waste lithium battery fragments.

[0016] 3. Under the action of the dust removal component, the dust on the waste lithium battery fragments can be blown off and collected, preventing the dust and residual liquid from affecting the subsequent magnetic separation treatment of the waste lithium battery fragments, thereby ensuring the normal magnetic separation of the waste lithium battery fragments. Description of the Drawings

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0018] Figure 2This is a three-dimensional structure schematic diagram of the electric throwing plate, belt assembly and strong magnetic plate of the present invention.

[0019] Figure 3 This is a three-dimensional structure schematic diagram of the guide rail and the material pushing frame of the present invention.

[0020] Figure 4 This is a three-dimensional structure schematic diagram of the slider and the electric push rod of the present invention.

[0021] Figure 5 This is a three-dimensional structure schematic diagram of the elastic cloth of the present invention.

[0022] Figure 6 This is a three-dimensional structure schematic diagram of the crushing assembly of the present invention.

[0023] Figure 7 This is a three-dimensional structure schematic diagram of the cam and the return spring of the present invention.

[0024] Figure 8 This is a three-dimensional structure schematic diagram of the crushing roller of the present invention.

[0025] Figure 9 This is a three-dimensional structure schematic diagram of the dust removal assembly of the present invention.

[0026] Figure 10 This is a three-dimensional structure schematic diagram of the connecting plate of the present invention.

[0027] Figure 11 This is a three-dimensional structure schematic diagram of the heating wire and the blowing fan of the present invention.

[0028] The markings of each component in the drawings are as follows: 1. Box body, 2. Feed hopper, 3. Discharge hopper, 4. Discharge frame, 6. Electric throwing plate, 7. Belt assembly, 8. Strong magnetic plate, 9. Guide rail, 10. Material pushing frame, 101. Slider, 102. Electric push rod, 11. Mounting plate, 111. Electric cross plate, 112. Elastic cloth, 12. Guide frame, 121. Fixed frame, 122. Crushing roller, 123. Driving motor, 124. Sieve plate, 125. Contact rod, 126. Rotating shaft, 127. Cam, 128. Return spring, 13. Exhaust frame, 131. Mesh plate, 132. Rotating rod, 133. Guide plate, 134. Stepping motor, 135. Connecting plate, 136. Heating wire, 1361. Mounting frame, 137. Blowing fan, 14. Shielding cover. Detailed implementation manners

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the 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. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0030] Embodiment: A magnetic separation device for recycling waste lithium batteries. Please refer to Figures 1 - 8 as shown in the figure. It includes a box body 1 and a feed hopper 2 fixedly connected to the upper right side of the top of the box body 1. A discharge hopper 3 is connected to the lower right side of the right side of the box body 1. The discharge hopper 3 can discharge metals. A discharge frame 4 is connected to the lower right side of the bottom of the box body 1. The discharge frame 4 can discharge non-metal fragments. It also includes an electric throwing plate 6, a belt assembly 7, a strong magnetic plate 8, a guide rail 9, a pushing frame 10, a slider 101, an electric push rod 102, a material receiving assembly and a crushing assembly. A belt assembly 7 is arranged between the lower right sides of the front and rear sides of the box body 1. The belt assembly 7 is composed of two conveying rollers, a flat belt and a motor. Among them, the two conveying rollers are rotatably connected to the lower part of the box body 1. The conveyor belt is wound between the two conveying rollers. The motor is installed on the lower right side of the front outer side of the box body 1. The end of the output shaft of the motor is fixedly connected to the front end of the right conveying roller. A strong magnetic plate 8 is fixedly connected between the lower right sides of the front and rear sides inside the box body 1. The strong magnetic plate 8 is in contact with the inner side of the flat belt of the belt assembly 7. An electric throwing plate 6 is arranged at the bottom of the box body 1. The electric throwing plate 6 is located below the belt assembly 7. The electric throwing plate 6 can throw the waste lithium battery upward to the right. Two guide rails 9 are fixedly connected between the lower right sides of the front and rear sides inside the box body 1. The guide rails 9 are located below the belt assembly 7. A pushing frame 10 is slidably connected to the inner side of the guide rails 9. The top of the pushing frame 10 is close to the belt assembly 7. A slider 101 is slidably penetrated through the bottom of the guide rail 9. The top of the slider 101 is fixedly connected to the bottom of the pushing frame 10. An electric push rod 102 is installed on the front side of the outer bottom of the guide rail 9. The end of the telescopic rod of the electric push rod 102 is fixedly connected to the front side of the slider 101. The electric push rod 102 is used to drive the slider 101 to move back and forth. The slider 101 drives the pushing frame 10 to move back and forth to push the metal magnetically attracted on the belt assembly 7, so that the impurities doped in the metal fall off. A material receiving assembly is arranged at the lower inner side of the box body 1. The material receiving assembly can receive the fallen impurities. A crushing assembly is arranged at the upper inner side of the box body 1. When the crushing assembly operates, the crushing assembly can crush and screen the waste lithium batteries entering the box body 1.

[0031] Please refer to Figure 3 and Figure 5 as shown in the figure. The material receiving assembly includes a mounting plate 11, an electric cross plate 111 and an elastic cloth 112. A mounting plate 11 is fixedly connected between the lower right sides of the front and rear sides inside the box body 1. The mounting plate 11 is located between the guide rail 9 and the discharge frame 4. An elastic cloth 112 is fixedly connected between the right side of the mounting plate 11 and the right side inside the box body 1. Three electric cross plates 111 are rotatably penetrated through the mounting plate 11 at equal intervals. When the impurities fall, the electric cross plates 111 can receive the fallen impurities.

[0032] Please refer to Figures 6 - 8As shown in the figure, the crushing assembly includes a guiding frame 12, a fixed frame 121, a crushing roller 122, a driving motor 123 and a screening assembly. A guiding frame 12 is fixedly connected between the upper right sides of the front and rear side surfaces inside the box body 1. The guiding frame 12 is inclined. A fixed frame 121 is fixedly connected between the left side surface of the guiding frame 12 and the upper part of the left side surface inside the box body 1. The crushing rollers 122 are symmetrically and rotatably connected between the front and rear sides of the fixed frame 121. When the crushing rollers 122 rotate, the crushing rollers 122 can crush large waste lithium batteries. The rear sides of the crushing rollers 122 on the left and right sides are connected by a spur gear set. A driving motor 123 is installed on the upper left side of the front side surface outside the box body 1. The end of the output shaft of the driving motor 123 is fixedly connected to the front end of the left crushing roller 122. A screening assembly is arranged between the guiding frame 12 and the box body 1. When the screening assembly operates, the screening assembly can screen the waste lithium batteries discharged into the box body 1; the screening assembly includes a sieve plate 124, a contact rod 125, a rotating shaft 126, a cam 127 and a return spring 128. The sieve plate 124 is slidably connected to the inside of the guiding frame 12. Six return springs 128 are evenly spaced and connected between the left side surface of the sieve plate 124 and the left side surface inside the guiding frame 12. The contact rods 125 are symmetrically and fixedly connected to the bottom of the sieve plate 124. The rotating shaft 126 is rotatably inserted through the upper right sides of the front and rear side surfaces of the box body 1. The rotating shaft 126 is located on the right side of the contact rod 125. The front end of the rotating shaft 126 is connected to the front end of the right crushing roller 122 through a synchronous belt assembly. The cams 127 are symmetrically and fixedly sleeved on the rotating shaft 126. The cams 127 are located on the right side of the contact rod 125. When the cams 127 rotate, the cams 127 can drive the contact rod 125 to move leftward.

[0033] First, place the two collection containers directly below the discharge hopper 3 and the discharge frame 4 respectively. Then, start the reverse rotation of the belt assembly 7 and at the same time start the forward rotation of the drive motor 123. The forward rotation of the drive motor 123 drives the forward rotation of the left crushing roller 122. The forward rotation of the left crushing roller 122 drives the reverse rotation of the right crushing roller 122 through the gear set transmission. The reverse rotation of the right crushing roller 122 drives the reverse rotation of the rotating shaft 126 through the synchronous belt assembly transmission. The reverse rotation of the rotating shaft 126 drives the reverse rotation of the cam 127. When the convex end of the cam 127 contacts the contact rod 125 during the reverse rotation of the cam 127, the cam 127 drives the contact rod 125 to move to the left. The contact rod 125 drives the sieve plate 124 to move to the left, and the return spring 128 is compressed. When the convex end of the cam 127 continues to reverse and disengages from the contact rod 125, due to the action of the return spring 128, the sieve plate 124 moves to the right to reset. Repeating this way, the sieve plate 124 can be continuously moved left and right. Then, start the electric push rod 102. The telescopic rod of the electric push rod 102 continuously expands and contracts to drive the slider 101 to move back and forth. The slider 101 drives the pusher frame 10 to move back and forth. Subsequently, an appropriate amount of crushed waste lithium batteries are discharged into the feed hopper 2. The waste lithium battery fragments in the feed hopper 2 fall into the box 1 and contact the sieve plate 124. The sieve plate 124 moves left and right to screen the waste lithium battery fragments. The small waste lithium battery fragments pass through the sieve plate 124 and continue to fall downward into the box 1 to contact the electric throwing plate 6, while the large waste lithium batteries fall from the sieve plate 124 into the fixed frame 121. The large waste lithium battery fragments contact the left and right crushing rollers 122. The forward rotation of the left crushing roller 122 and the reverse rotation of the right crushing roller 122 crush the large waste lithium battery fragments, so that the large waste lithium batteries are crushed into small waste lithium battery fragments. The small waste lithium battery fragments continue to fall downward into the box 1 to contact the electric throwing plate 6. In this way, it can prevent large waste lithium battery fragments from being inconvenient for subsequent magnetic separation, thus ensuring the smooth magnetic separation of waste lithium battery fragments. Then, start the electric throwing plate 6. When the electric throwing plate 6 moves upward and to the right, the electric throwing plate 6 drives the waste lithium battery fragments to move upward and to the right for throwing. The thrown waste lithium battery fragments contact the belt assembly 7. The strong magnetic plate 8 attracts the metal in the waste lithium battery fragments by magnetic force. The attracted metal contacts the belt assembly 7. Then, the reverse rotation of the belt assembly 7 drives the metal to move to the right, while the non-metal fragments fall downward and remain on the electric throwing plate 6. When the electric throwing plate 6 resets to the lower left, the electric throwing plate 6 drives the fallen non-metal fragments to move to the lower left to reset. Repeating this way, the metal and non-metal fragments in the waste lithium battery fragments can be continuously magnetically separated. At the same time, as the electric throwing plate 6 continuously throws the non-metal fragments upward and to the right, the non-metal fragments also continuously move to the right. When the non-metal fragments are thrown above the discharge frame 4, the non-metal fragments fall downward into the discharge frame 4. The non-metal fragments in the discharge frame 4 are discharged from the discharge frame 4 into the left collection container for collection. As the metal continuously moves to the right, the metal contacts the pusher frame 10,The pusher frame 10 moves back and forth to push the metal attracted by the strong magnetic plate 8 on the belt assembly 7. As the metal is continuously pushed, the metal stops jamming the doped non-metal fragments, and the non-metal fragments doped in the metal fall downward onto the mounting plate 11 and contact the electric cross plate 111, thus completing the separation of the non-metal fragments doped in the metal. This can prevent non-metal fragments from being doped in the metal separated by magnetic separation, thereby improving the magnetic separation effect and the purity and quality of the recycled metal. When the metal that has been separated from the non-metal fragments again moves to the upper part of the discharge hopper 3, the metal breaks away from the magnetic attraction area of the strong magnetic plate 8 and falls from the belt assembly 7 into the discharge hopper 3. The discharge hopper 3 discharges the metal into the collection container on the right for collection and processing. When an appropriate amount of non-metal fragments accumulates on the electric cross plate 111, the electric cross plate 111 is started to rotate by 90 degrees. The 90-degree rotation of the electric cross plate 111 drives the non-metal fragments to rotate forward and be located below the mounting plate 11. The electric cross plate 111 stops blocking the non-metal fragments, and the non-metal fragments fall downward into the discharge frame 4. The non-metal fragments are discharged from the discharge frame 4 for collection. This process is repeated continuously to complete the magnetic separation of the waste lithium battery fragments. After all the waste lithium battery fragments have completed magnetic separation, the electric throwing plate 6 and the belt assembly 7 are turned off. At the same time, the electric push rod 102 is turned off. The electric push rod 102 stops driving the pusher frame 10 to move back and forth through the slider 101. The drive motor 123 is turned off, and the crushing rollers 122 on both the left and right sides stop rotating. The right crushing roller 122 stops driving the rotating shaft 126 to reverse through the belt assembly 7. The rotating shaft 126 stops driving the cam 127 to reverse, and the sieve plate 124 also stops moving, so that the subsequent recycling process of the metal and non-metal fragments can be started.,

[0034] Please refer to Figures 9 - 11As shown in the figure, the magnetic separation device for recycling waste lithium batteries further includes a dust removal component installed on the box body 1. The dust removal component includes an exhaust frame 13, a mesh plate 131, a feeding component, a heating wire 136, a mounting frame 1361 and a blowing fan 137. The exhaust frame 13 is vertically and fixedly penetrated through the front side of the box body 1, and the mounting frame 1361 is vertically and fixedly penetrated through the rear side of the box body 1. Mesh plates 131 are fixedly connected to the inner sides of the mounting frame 1361 and the exhaust frame 13. The blowing fan 137 is fixedly penetrated through the rear side of the mounting frame 1361. When the blowing fan 137 is started, the blowing fan 137 can blow the dust on the waste lithium batteries. The heating wire 136 is installed inside the mounting frame 1361, and the heating wire 136 can heat the air blown out by the blowing fan 137. A feeding component is arranged at the lower part of the box body 1. When the feeding component operates, the feeding component can drive the waste lithium batteries to move inside the box body 1 to increase the dust removal time of the waste lithium batteries. The feeding component includes a rotating rod 132, a feeding plate 133, a stepping motor 134 and a connecting plate 135. Eight rotating rods 132 are rotatably penetrated through the lower parts between the front and rear sides of the box body 1 at equal intervals. Every four rotating rods 132 form a group. The feeding plate 133 is fixedly sleeved on the rotating rod 132. The feeding plate 133 is inclined. When the feeding plate 133 swings up and down, the feeding plate 133 can drive the waste lithium batteries to move left and right for dust removal. Connecting plates 135 are symmetrically rotatably connected between adjacent feeding plates 133. Two stepping motors 134 are installed on the outer front side of the box body 1. The output shaft ends of the two stepping motors 134 are respectively fixedly connected to the front ends of the uppermost rotating rods 132 on the left and right sides.

[0035] Initially, the exhaust frame 13 is externally connected to a collection container. When the waste lithium battery fragments are discharged into the box body 1, the waste lithium battery fragments fall downward onto the left guide plate 133. At this time, start the left stepping motor 134 to rotate forward. The forward rotation of the left stepping motor 134 drives the rotating rod 132 above the left side to rotate forward. The forward rotation of the rotating rod 132 above the left side drives the guide plate 133 above the left side to swing downward. The downward swing of the guide plate 133 above the left side drives the remaining three guide plates 133 to swing downward together through the left connecting plate 135. The downward swing of the guide plate 133 above the left side also drives the waste lithium battery fragments to swing downward. When the guide plate 133 above the left side swings downward to correspond to the guide plate 133 above the right side, turn off the left stepping motor 134, and the left guide plate 133 stops swinging downward. At this time, the waste lithium battery fragments on the guide plate 133 above the left side slide onto the guide plate 133 on the right side. Then start the left stepping motor 134 to rotate in reverse, so that the left guide plate 133 swings upward to reset. Then start the right stepping motor 134 to rotate in reverse, so that the right guide plate 133 swings downward to correspond to the left guide plate 133. The waste lithium battery fragments on the right guide plate 133 slide onto the left guide plate 133. Repeating this way, the movement of the waste lithium battery can be controlled to move left and right continuously under the action of the guide plate 133. And due to the swing of the guide plate 133, the residence time of the waste lithium battery fragments in the box body 1 can be controlled according to requirements. At this time, start the heating wire 136. The heating wire 136 heats the inside of the installation frame 1361. Then start the air blowing fan 137. The air blowing fan 137 blows out air. The blown air is heated by the heating wire 136 to form hot air. The hot air then passes through the rear side net plate 131 and is discharged into the box body 1 to contact the waste lithium battery moving left and right. The hot air dries the residual liquid in the waste lithium battery fragments and blows away the dust on the waste lithium battery. The blown dust is discharged into the exhaust frame 13 together with the hot air through the front side net plate 131. The hot air and dust are discharged from the exhaust frame 13 into the collection container for collection and treatment. When the waste lithium battery block moves to the lower part left and right, the waste lithium battery fragments are separated from the guide plate 133 and fall onto the electric throwing plate 6 for subsequent processing. When all the waste lithium batteries are magnetically separated, turn off the heating wire 136 and the air blowing fan 137. In this way, it is possible to prevent dust and residual liquid from affecting the subsequent magnetic separation treatment of the waste lithium battery fragments, thereby ensuring the normal magnetic separation of the waste lithium battery fragments.

[0036] Please refer to Figure 1 As shown, the magnetic separation device for recycling waste lithium batteries further includes a shielding cover 14. The lower part of the discharge hopper 3 and the lower part of the discharge frame 4 are both fixedly sleeved with a shielding cover 14. The shielding cover 14 can shield the dust generated when discharging metal and non-metal fragments.

[0037] When the metal is discharged from the discharge hopper 3 into the collection container, the right-side shielding cover 14 can block the dust generated during the discharging process. Similarly, when the non-metal fragments are discharged from the discharge frame 4 into the left-side collection container, the left-side shielding cover 14 can also block the dust generated during the discharging process. In this way, the dust generated during the discharging process can be prevented from floating around and affecting the working environment, thus ensuring a good working environment.

[0038] It should be understood that the above description is only for exemplary purposes and does not mean to limit the present invention. Those skilled in the art will understand that the variant forms of the present invention will be included within the scope of the claims herein.

Claims

1. A magnetic separation device for recycling waste lithium batteries, comprising a box body (1) and a feed hopper (2) fixedly connected to the box body (1), a discharge hopper (3) is connected to the box body (1), and a discharge frame (4) is connected to the bottom of the box body (1), characterized in that, The invention also includes a belt assembly (7) arranged between the two sides of the box body (1), a strong magnetic plate (8) in contact with the inner side of the belt assembly (7) is fixedly connected between the two sides of the box body (1), and an electric throwing plate (6) is provided on the box body (1) below the belt assembly (7) for throwing the waste lithium battery to the upper right. A guide rail (9) is fixedly connected between the two sides of the box body (1) below the belt assembly (7), and a pusher rack (10) is slidably connected to the inner side of the guide rail (9). The top of the pusher rack (10) is close to the belt assembly (7), and a pusher rack (10) is slidably connected to the guide rail (9). ) is fixedly connected to the guide rail (9), an electric push rod (102) is installed on the guide rail (9), and the telescopic rod end of the electric push rod (102) is fixedly connected to the slider (101) and is used to drive the slider (101) to move. The slider (101) drives the push rack (10) to move to push the metal magnetically attracted on the belt assembly (7) so that impurities mixed in the metal fall off. A receiving assembly is provided on the box body (1) for receiving the fallen impurities. A crushing assembly is provided on the box body (1) for crushing and screening the waste lithium batteries entering the box body (1).

2. The magnetic separation device for recycling waste lithium batteries according to claim 1, wherein, The belt assembly (7) consists of two conveyor rollers, a flat belt and a motor, wherein the two conveyor rollers are rotatably connected to the box (1), the conveyor belt is wound between the two conveyor rollers, the motor is installed on the box (1), and the end of the output shaft of the motor is fixedly connected to the end of one of the conveyor rollers.

3. A magnetic separation device for recycling waste lithium batteries according to claim 2, characterized in that, The material receiving assembly includes a mounting plate (11) fixed between two sides of the box body (1), the mounting plate (11) is located between the guide rail (9) and the discharge frame (4), an elastic cloth (112) is fixed between the mounting plate (11) and the inner side of the box body (1), and an electric cross plate (111) is evenly spaced and rotatably connected on the mounting plate (11) to receive fallen impurities.

4. A magnetic separation device for recycling waste lithium batteries according to claim 3, characterized in that, The crushing assembly includes a guide frame (12) fixedly connected between two sides of the box (1), the guide frame (12) is arranged to be inclined, a fixed frame (121) is fixedly connected between the guide frame (12) and the inner side of the box (1), and crushing rollers (122) are symmetrically connected to the two sides of the fixed frame (121) for crushing large pieces of waste lithium batteries. The crushing rollers (122) are connected to each other through a spur gear group. A driving motor (123) is installed on the box (1), and the end of the output shaft of the driving motor (123) is fixedly connected to the end of one of the crushing rollers (122). A screening assembly is provided between the guide frame (12) and the box (1) for screening the waste lithium batteries discharged into the box (1).

5. The magnetic separation device for recycling waste lithium batteries according to claim 4, characterized in that, The screening assembly includes a screen plate (124) slidably connected to the inner side of the guide frame (12), a return spring (128) is evenly spaced and connected between the screen plate (124) and the guide frame (12), a contact rod (125) is symmetrically fixed to the bottom of the screen plate (124), a rotating shaft (126) located on the right side of the contact rod (125) is rotatably connected between the two side surfaces of the box body (1), and the end of the rotating shaft (126) is connected to the end of one of the crushing rollers (122) through a synchronous belt assembly. A cam (127) located on the right side of the contact rod (125) is symmetrically fixed on the rotating shaft (126) for driving the contact rod (125) to move.

6. The magnetic separation device for recycling waste lithium batteries according to claim 5, characterized in that, The magnetic separation device for recycling waste lithium batteries also includes a dust removal component, which includes an exhaust frame (13) fixedly connected to the box body (1), a mounting frame (1361) fixedly connected to the box body (1), a mesh plate (131) fixedly connected to the inner side of the mounting frame (1361) and the inner side of the exhaust frame (13), an air blowing fan (137) fixedly connected to the mounting frame (1361) for blowing away dust on the waste lithium batteries, a heating wire (136) installed on the inner side of the mounting frame (1361) for heating the air blown out by the air blowing fan (137), and a material guide component provided on the box body (1) for driving the waste lithium batteries to move in the box body (1).

7. A magnetic separation device for recycling waste lithium batteries according to claim 6, characterized in that, The material guide assembly includes rotating rods (132) that are evenly spaced and rotatably connected between two sides of the box body (1). A material guide plate (133) that is arranged tilted is fixedly mounted on the rotating rod (132) and is used to drive the waste lithium batteries to move left and right for dust removal. Adjacent material guide plates (133) are symmetrically connected to each other by connecting plates (135). A stepper motor (134) is installed on the box body (1), and the end of the output shaft of the stepper motor (134) is fixedly connected to the end of one of the rotating rods (132).

8. A magnetic separation device for recycling waste lithium batteries according to claim 7, characterized in that, The magnetic separation device for recycling waste lithium batteries further comprises a shielding cover (14) fixedly mounted on the discharge hopper (3) and the discharge frame (4) for shielding dust generated when metal and non-metal fragments are discharged.

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