A magnetic separation device for recycling waste lithium batteries

Abstract

The present invention relates to the technical field of waste battery recycling and processing, and in particular to a magnetic separation device for recycling waste lithium batteries, comprising 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, wherein 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 present invention can throw the waste lithium battery fragments upwards through an electric throwing plate, and the strong magnetic plate absorbs the metal in the waste lithium battery onto the belt assembly to complete magnetic separation. The belt assembly is reversed to drive the metal to move to the right and contact the pusher rack. The pusher rack moves back and forth to push the metal, so that the non-metallic fragments mixed in the metal fall downward to complete further separation, which can prevent the metal separated by magnetic separation from being mixed with non-metallic fragments, thereby improving the magnetic separation effect and the purity and quality of the recovered metal.

Description

Technical Field

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

[0002] With the vigorous development of the new energy industry, the demand for lithium batteries, as an important energy storage device, has increased dramatically. However, the service life of lithium batteries is limited, and the generation of a large number of waste lithium batteries has brought dual 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] Chinese patent publication number CN117259005B discloses a magnetic separation device for recycling used lithium batteries. The device comprises a housing, legs, and a feed hopper mounted on the housing. The legs are symmetrically attached to the front and rear sides of the housing's outer bottom. The lower front portion of the housing is open. A discharge hopper is attached to the outside of the feed hopper, with its feed opening located within the housing. Four buffer springs are evenly spaced and connected to the front of the housing's inner bottom. A movable plate is attached between the tail ends of the four buffer springs, located below the feed hopper, to guide the used lithium batteries. While the aforementioned patent can magnetically separate metals from used lithium batteries, the strong magnetic force during the separation process causes some metals to attract each other, sometimes also entraining non-metallic fragments that are then transported and collected. This phenomenon causes the non-metallic fragments to remix with the metals, severely impacting the effectiveness of the magnetic separation and reducing the purity and quality of the recovered metals.

[0004] The present invention aims to solve the problems existing in the above-mentioned patents. To this end, a magnetic separation device for recycling waste lithium batteries is proposed, which can push the magnetically separated metal to cause the doped non-metallic fragments to fall and separate, thereby improving the magnetic separation effect and the purity and quality of the recovered metal. Summary of the Invention

[0005] To overcome the problem of metals sometimes being attracted to each other by strong magnetic forces, and sometimes being mixed with non-metallic fragments and being sucked and collected together. This phenomenon causes the non-metallic fragments to mix with the metals, seriously affecting the effectiveness of magnetic separation and reducing the purity and quality of the recovered metal. The present invention provides a magnetic separation device for recycling used lithium batteries that can push the metals after magnetic separation, causing the mixed non-metallic fragments to fall and separate, thereby improving the magnetic separation effect and the purity and quality of the recovered metal.

[0006] The present invention is achieved through the following technical approaches:

[0007] 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.

[0008] 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.

[0009] 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.

[0010] 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.

[0011] 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.

[0012] Further explanation, the magnetic separation device for recycling waste lithium batteries also includes a dust removal component, which includes an exhaust frame fixedly connected to the box body, a mounting frame fixedly connected to the box body, mesh plates fixedly connected to the inner sides of the mounting frame and the exhaust frame, an air blowing fan fixedly connected to the mounting frame, which is used to blow away dust on the waste lithium batteries, a heating wire installed on the inside of the mounting frame to heat the air blown out by the air fan, and a material guide component is provided on the box body to drive the waste lithium batteries to move in the box body.

[0013] Further explanation, the material guide assembly includes evenly spaced rotating rods that are connected between the two sides of the box body. The rotating rods are fixed with inclined material guide plates, which are used to drive the used lithium batteries to move left and right for dust removal. Adjacent material guide plates are symmetrically connected by connecting plates. A stepper motor is installed on the box body, and the output shaft end of the stepper motor is fixedly connected to one of the ends of the rotating rods.

[0014] Further explanation: the magnetic separation device for recycling waste lithium batteries also includes a shielding cover fixedly mounted on the discharge hopper and the discharge frame, which is used to shield the dust generated when the metal and non-metal fragments are discharged.

[0015] The present invention is significantly improved in that:

[0016] 1. The electric throwing plate can throw the waste lithium battery fragments upward, and the strong magnetic plate absorbs the metal in the waste lithium battery onto the belt assembly to complete magnetic separation. The belt assembly reverses and drives the metal to move to the right to contact the pusher rack. The pusher rack moves back and forth to push the metal, causing the non-metallic fragments mixed in the metal to fall down to complete further separation. This can prevent the metal separated by magnetic separation from being mixed with non-metallic fragments, thereby improving the magnetic separation effect and the purity and quality of the recovered metal.

[0017] 2. Under the action of the screen plate and the crushing roller, the waste lithium battery fragments discharged into the box can be screened, and then the large waste lithium battery fragments screened out can be crushed, so that the large waste lithium battery can be broken into small waste lithium battery fragments. In this way, large pieces of waste lithium battery fragments can be prevented from being inconvenient for subsequent magnetic separation, thereby ensuring the smooth magnetic separation of waste lithium battery fragments.

[0018] 3. Under the action of the dust removal component, the dust on the waste lithium battery fragments can be blown off and collected, which can prevent the dust and residual liquid from affecting the subsequent magnetic separation of the waste lithium battery fragments, thereby ensuring the normal magnetic separation of the waste lithium battery fragments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0020] Figure 2It is a schematic diagram of the three-dimensional structure of the electric throwing plate, belt assembly and strong magnetic plate of the present invention.

[0021] Figure 3 It is a schematic diagram of the three-dimensional structure of the guide rail and the pusher rack of the present invention.

[0022] Figure 4 It is a schematic diagram of the three-dimensional structure of the slider and the electric push rod of the present invention.

[0023] Figure 5 Schematic diagram of the three-dimensional structure of the elastic fabric of the present invention.

[0024] Figure 6 It is a schematic diagram of the three-dimensional structure of the crushing assembly of the present invention.

[0025] Figure 7 It is a schematic diagram of the three-dimensional structure of the cam and the return spring of the present invention.

[0026] Figure 8 It is a schematic diagram of the three-dimensional structure of the crushing roller of the present invention.

[0027] Figure 9 It is a schematic diagram of the three-dimensional structure of the dust removal component of the present invention.

[0028] Figure 10 It is a schematic diagram of the three-dimensional structure of the connecting plate of the present invention.

[0029] Figure 11 It is a schematic diagram of the three-dimensional structure of the heating wire and the air blowing fan of the present invention.

[0030] The markings of the components in the accompanying 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. Pushing rack, 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. Screen plate, 125. Contact rod, 126. Rotating shaft, 127. Cam, 128. Reset 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. Air fan, 14. Shielding cover. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] Example: A magnetic separation device for recycling waste lithium batteries, please refer to Figures 1-8 As shown, it includes a box body 1 and a feed hopper 2 fixed to the right side of the top of the box body 1, a discharge hopper 3 is connected to the lower right side of the box body 1, and the discharge hopper 3 can discharge metal, and a discharge frame 4 is connected to the right side of the bottom of the box body 1, and the discharge frame 4 can discharge non-metallic fragments. It also includes an electric throwing plate 6, a belt assembly 7, a strong magnetic plate 8, a guide rail 9, a pushing rack 10, a slider 101, an electric push rod 102, a material receiving assembly and a crushing assembly. A belt assembly 7 is provided between the lower right sides of the front and rear sides of the box body 1. The belt assembly 7 consists of two conveyor rollers, a flat belt and a motor. The two conveyor rollers are rotatably connected to the lower part of the box body 1. The conveyor belt is wound between the two conveyor rollers. The motor is installed on the lower right side of the front side outside the box body 1. The output shaft end of the motor is fixedly connected to the front end of the right conveyor roller. A strong magnetic plate 8 is fixed between the lower right sides of the front and rear sides of the box body 1. The strong magnetic plate 8 contacts the inner side of the flat belt of the belt assembly 7. An electric throwing plate 6 is provided at the bottom of the box body 1. The electric throwing plate 6 is located below the belt assembly 7. The dynamic throwing plate 6 can throw the waste lithium battery to the upper right. Two guide rails 9 are fixedly connected between the lower right sides of the front and rear sides of the box body 1. The guide rail 9 is located below the belt assembly 7. The inner side of the guide rail 9 is slidably connected with a push rack 10. The top of the push rack 10 is close to the belt assembly 7. The bottom of the guide rail 9 is slidably connected with a slider 101. The top of the slider 101 is fixedly connected to the bottom of the push rack 10. An electric push rod 102 is installed on the front side of the outer bottom of the guide rail 9. The telescopic rod end of the electric push rod 102 is connected to the slider 10. 1 is fixedly connected to the front side, the electric push rod 102 is used to drive the slider 101 to move back and forth, and the slider 101 drives the push rack 10 to move back and forth to push the metal magnetically attracted on the belt assembly 7, so that impurities doped in the metal fall off. A receiving assembly is provided at the lower inner part of the box body 1, which can receive the fallen impurities. A crushing assembly is provided at the upper inner part of the box body 1. When the crushing assembly is in operation, the crushing assembly can crush and screen the waste lithium batteries entering the box body 1.

[0033] See also Figure 3 and Figure 5 As shown, the material receiving assembly includes a mounting plate 11, an electric cross plate 111 and an elastic cloth 112. The mounting plate 11 is fixedly connected between the lower right sides of the front and rear sides of the box body 1. The mounting plate 11 is located between the guide rail 9 and the discharge frame 4. The elastic cloth 112 is fixedly connected between the right side of the mounting plate 11 and the right side of the box body 1. Three electric cross plates 111 are rotatably connected at even intervals on the mounting plate 11. When impurities fall, the electric cross plates 111 can receive the fallen impurities.

[0034] See also Figure 6-Figure 8As shown, the crushing assembly includes a guide frame 12, a fixed frame 121, a crushing roller 122, a drive motor 123 and a screening assembly. The guide frame 12 is fixedly connected between the upper right sides of the front and rear sides of the box body 1. The guide frame 12 is tilted. A fixed frame 121 is fixedly connected between the left side of the guide frame 12 and the upper left side of the box body 1. The crushing roller 122 is symmetrically connected to the front and rear sides of the fixed frame 121. When the crushing roller 122 rotates, the crushing roller 122 can crush large pieces of waste lithium batteries. The rear sides of the left and right crushing rollers 122 are connected by a spur gear set. A drive motor 123 is installed on the upper left side of the front side outside the box body 1. The output shaft end of the drive motor 123 is fixedly connected to the front end of the left crushing roller 122. A screening assembly is arranged between the guide frame 12 and the box body 1. When the screening assembly is in operation, the screening assembly can To achieve screening of 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 guide frame 12, and six return springs 128 are evenly spaced and connected between the left side of the sieve plate 124 and the left side of the guide frame 12. The bottom of the sieve plate 124 is symmetrically fixed with the contact rod 125. A rotating shaft 126 is rotatably connected between the upper right side of the front and rear sides 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. Cams 127 are fixedly sleeved symmetrically on the rotating shaft 126. The cam 127 is located on the right side of the contact rod 125. When the cam 127 rotates, the cam 127 can drive the contact rod 125 to move to the left.

[0035] First, place the two collecting containers directly under the discharge hopper 3 and the discharge frame 4 respectively, then start the belt assembly 7 to reverse, and at the same time start the drive motor 123 to rotate forward. The forward rotation of the drive motor 123 drives the left crushing roller 122 to rotate forward, and the forward rotation of the left crushing roller 122 drives the right crushing roller 122 to reverse through the gear group. The reverse rotation of the right crushing roller 122 drives the rotating shaft 126 to reverse through the synchronous belt assembly. The reverse rotation of the rotating shaft 126 drives the cam 127 to reverse. When the cam 127 reverses so that the convex end contacts the contact rod 125, the cam 127 drives the contact rod 125 to move to the left, and the contact rod 125 drives the screen plate 124 to move to the left, and the reset spring 128 is compressed. When the cam 127 continues to reverse so that the convex end is out of contact with the contact rod 125, The screen plate 124 is reset to the right by the action of the reset spring 128, and this is repeated so that the screen plate 124 can move left and right continuously, and the electric push rod 102 is started again. The telescopic rod of the electric push rod 102 is continuously extended and retracted to drive the slider 101 to move back and forth, and the slider 101 drives the push rack 10 to move back and forth, and then the waste lithium batteries after a proper amount of crushing are discharged into the feed hopper 2, and the waste lithium battery fragments in the feed hopper 2 fall into the box body 1 and contact with the screen plate 124. The screen plate 124 moves left and right to screen the waste lithium battery fragments. The small waste lithium battery fragments pass through the screen plate 124 and continue to fall downward into the box body 1 and contact with the electric throwing plate 6, while the large waste lithium batteries fall from the screen plate 124 into the fixed frame 121, and the large waste lithium battery fragments are separated from the left and right The crushing rollers 122 on both sides are in contact, and the left crushing roller 122 rotates forward and the right crushing roller 122 rotates counterclockwise to crush the large waste lithium battery fragments, so that the large waste lithium battery is broken into small waste lithium battery fragments, and the small waste lithium battery fragments continue to fall downward into the box body 1 and contact the electric throwing plate 6. In this way, it can prevent large pieces of waste lithium battery fragments from being inconvenient for subsequent magnetic separation, thereby ensuring that the waste lithium battery fragments are smoothly magnetically separated, and then the electric throwing plate 6 is started. When the electric throwing plate 6 moves to the upper right, the electric throwing plate 6 drives the waste lithium battery fragments to move to the upper right for throwing up. The thrown waste lithium battery fragments come into contact with the belt assembly 7, and the strong magnetic plate 8 attracts the metal in the waste lithium battery fragments through magnetic force. The belt assembly 7 contacts, and then the belt assembly 7 reverses to drive the metal to move to the right, while the non-metallic fragments fall down and continue to be 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-metallic fragments to move to the lower left and reset, and so on repeatedly, which can continuously separate the metal and non-metallic fragments in the waste lithium battery fragments by magnetic separation. At the same time, as the electric throwing plate 6 continuously throws the non-metallic fragments to the upper right, the non-metallic fragments also continue to move to the right. When the non-metallic fragments are thrown above the discharge frame 4, the non-metallic fragments fall downward into the discharge frame 4, and the non-metallic fragments in the discharge frame 4 are discharged from the discharge frame 4 into the left collection container for collection. As the metal continues to move to the right, the metal contacts the pushing rack 10.The pusher 10 moves back and forth to push the metal on the belt assembly 7 that is magnetically attracted by the strong magnetic plate 8. As the metal is continuously pushed, the metal stops blocking the doped non-metallic fragments, and the non-metallic fragments doped in the metal fall down to the mounting plate 11 and contact the electric cross plate 111, thus completing the separation of the non-metallic fragments doped in the metal, and preventing the metal separated by magnetic separation from being mixed with non-metallic fragments, thereby improving the magnetic separation effect and the purity and quality of the recovered metal. When the metal with non-metallic fragments separated continues to move to the right above the discharge hopper 3, the metal is separated from the strong magnetic plate 8. In the magnetic area, the metal falls from the belt assembly 7 into the discharge hopper 3, and the discharge hopper 3 discharges the metal into the collection container on the right for collection and processing. When an appropriate amount of non-metallic fragments are accumulated on the electric cross plate 111, the electric cross plate 111 is started to rotate ninety degrees. The electric cross plate 111 rotates ninety degrees to drive the non-metallic fragments to rotate forward under the mounting plate 11. The electric cross plate 111 stops to block the non-metallic fragments, and the non-metallic fragments fall downward into the discharge frame 4. The non-metallic fragments are discharged and collected from the discharge frame 4. This is repeated to continuously complete the magnetic separation of waste lithium battery fragments. After all the waste lithium battery fragments have been magnetically separated, the electric ejector plate 6 and belt assembly 7 are closed, and the electric push rod 102 is also closed. The electric push rod 102 stops driving the pusher frame 10 back and forth through the slider 101. The drive motor 123 is turned off, and the left and right crushing rollers 122 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 screen plate 124 also stops moving. Subsequent recycling of the metal and non-metal fragments can then begin.

[0036] See also Figures 9-11As shown, the magnetic separation device for recycling waste lithium batteries also includes a dust removal component installed on the box body 1, and the dust removal component includes an exhaust frame 13, a mesh plate 131, a material guide component, a heating wire 136, a mounting frame 1361 and an air blowing fan 137. The front side of the box body 1 is vertically fixed with the exhaust frame 13, and the rear side of the box body 1 is vertically fixed with the mounting frame 1361. The inner side of the mounting frame 1361 and the inner side of the exhaust frame 13 are fixedly connected with the mesh plate 131, and the rear side of the mounting frame 1361 is fixed with the air blowing fan 137. When the air blowing fan 137 is started, the air blowing fan 137 can blow away the dust on the waste lithium batteries. The heating wire 136 is installed inside the mounting frame 1361. The heating wire 136 can heat the air blown out by the air blowing fan 137. The lower part of the box body 1 is provided with a material guide component. When the material guide component is in operation When the material guide plate 133 swings up and down, the material guide plate 133 can drive the waste lithium batteries to move left and right for dust removal. The adjacent material guide plates 133 are symmetrically connected with a connecting plate 135 for rotation front and back. Two stepping motors 134 are installed on the front side of the outer side of the box 1. The output shaft ends of the two stepping motors 134 are fixedly connected to the front end of the uppermost rotating rod 132 on the left and right sides respectively.

[0037] Initially, the exhaust frame 13 receives the collection container outside. 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, the left stepper motor 134 is started to rotate forward. The left stepper motor 134 rotates forward to drive the upper left rotating rod 132 to rotate forward. The upper left rotating rod 132 rotates forward to drive the upper left guide plate 133 to swing downward. The upper left guide plate 133 swings downward and drives the remaining three guide plates 133 to swing downward together through the left connecting plate 135. The upper left guide plate 13 The downward swing also drives the waste lithium battery fragments to swing downward. When the upper left guide plate 133 swings downward and corresponds to the upper right guide plate 133, the left stepper motor 134 is turned off and the left guide plate 133 stops swinging downward. At this time, the waste lithium battery fragments on the upper left guide plate 133 slide onto the upper right guide plate 133. Then the left stepper motor 134 is started to reverse and the left guide plate 133 is swung upward to reset. Then the right stepper motor 134 is started to reverse and the right guide plate 133 is swung downward to correspond to the left guide plate 133. The guide plate 133 corresponds to the waste lithium battery fragments on the right guide plate 133, and the waste lithium battery fragments slide onto the left guide plate 133. This is repeated, and the waste lithium battery can be controlled to move left and right continuously under the action of the guide plate 133. Moreover, 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 demand. At this time, the heating wire 136 is started, and the heating wire 136 heats the inside of the installation frame 1361. Then, the blowing fan 137 is started, and the blowing fan 137 blows out air. The blown air is heated by the heating wire 136 to form a The hot air then passes through the rear mesh plate 131 and is discharged into the box body 1 to contact the used lithium batteries moving left and right. The hot air dries the residual liquid in the used lithium battery fragments and blows away the dust on the used lithium batteries. The blown dust passes through the front mesh plate 131 and is discharged into the exhaust frame 13 together with the hot air. The hot air and dust are discharged from the exhaust frame 13 into the collection container for collection and processing. When the used lithium battery blocks move left and right to the bottom, the used lithium battery fragments break away from contact with the guide plate 133 and fall onto the electric throwing plate 6 for subsequent processing. When all the used lithium batteries have been magnetically separated, the heating wire 136 and the blowing fan 137 are turned off. In this way, dust and residual liquid can be prevented from affecting the subsequent magnetic separation of the used lithium battery fragments, thereby ensuring the normal magnetic separation of the used lithium battery fragments.

[0038] See also Figure 1 As shown, the magnetic separation device for recycling waste lithium batteries also includes a shielding cover 14. The lower part of the discharge hopper 3 and the lower part of the discharge frame 4 are fixedly equipped with the shielding cover 14. The shielding cover 14 can shield the dust generated when the metal and non-metal fragments are discharged.

[0039] When metal is discharged from the discharge hopper 3 into the collection container, the right shielding cover 14 can block the dust generated during the discharge process. Similarly, when non-metallic fragments are discharged from the discharge frame 4 into the left collection container, the left shielding cover 14 can also block the dust generated during the discharge process. In this way, the dust generated during the discharge process can be prevented from floating around and affecting the working environment, thereby ensuring a good working environment.

[0040] It should be understood that the above description is only for illustrative purposes and is not intended to limit the present invention. Those skilled in the art will appreciate that variations of the present invention will fall 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) fixed to the box body (1), a discharge hopper (3) connected to the box body (1), and a discharge frame (4) 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. A magnetic separation device for recycling waste lithium batteries according to claim 1, characterized in that: 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. A 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. A 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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