Positive electrode black powder ball-milling device for recycling waste batteries

Abstract

The invention relates to the technical field of ball-milling powder removal, and provides a positive electrode black powder ball-milling device for waste battery recycling, which comprises a box body, a ball-milling roller is arranged in the box body, two supporting frames are arranged at the two ends of the ball-milling roller, and a supporting plate is fixed at the bottoms of the two supporting frames; a ball-milling transmission assembly is arranged between the supporting plate and the ball-milling roller, a spiral feeder is arranged on the feeding side of the ball-milling roller and used for feeding positive plates, the discharging end of the spiral feeder is connected with a water inlet pipeline, and a material pumping fan is arranged on the discharging side of the ball-milling roller. According to the anode black powder ball-milling device for recycling the waste batteries, the ball-milling roller inclines back and forth during rotation, so that grinding is more sufficient, dead angles are reduced, black powder and metal sheets can be rapidly extracted from the interior of the ball-milling roller and separated through cooperation of an arranged material extraction fan and a dust remover after ball milling, manual screening is not needed, and the production efficiency is improved. And the working efficiency is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of ball milling and de-powdering, in particular to a positive electrode black powder ball milling device for recycling waste batteries. Background Art

[0002] As the key raw material of the battery, the positive electrode material directly determines the safety and development of the battery. It also accounts for the highest proportion of the material cost of lithium-ion batteries. The service life of lithium-ion batteries is limited, and a large number of waste lithium-ion batteries are generated after they are scrapped.

[0003] Therefore, the recycling of waste batteries is particularly important. The patent with publication number CN207887261U proposes a device for grinding and separating aluminum sheets and positive electrode materials. The positive electrode materials and aluminum sheets are ground by steel balls to crush the positive electrode materials and remove the aluminum sheets, thereby improving the recovery rate of the positive electrode materials and aluminum sheets. Compared with chemical de-powdering, it is more environmentally friendly and does not produce harmful gases. However, this method has the following disadvantages: 1. It is not convenient to quickly separate the black powder from the positive electrode after ball milling, and ball milling easily produces dead corners; 2. After repeated use, a large amount of black powder will adhere to the steel balls and lining of the ball mill, which will not only easily cause waste of black powder, but also easily affect the effect of ball milling.

[0004] Therefore, in view of the above problems, a positive electrode black powder ball milling device for recycling waste batteries is proposed. Summary of the invention

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a positive electrode black powder ball milling device for recycling waste batteries, comprising a box body, a ball milling drum is arranged inside the box body, two support frames are arranged at both ends of the ball milling drum, support plates are fixed at the bottom of the two support frames, a ball milling transmission assembly is arranged between the support plate and the ball milling drum, a screw feeder is arranged on the feeding side of the ball milling drum for feeding positive electrode sheets, a water inlet pipe is connected to the discharge end of the screw feeder, an exhaust fan is arranged on the discharge side of the ball milling drum, a dust collector is connected to the air outlet end of the exhaust fan for separating black powder from metal sheets, sealed rotating connectors are embedded in the two support frames, and the feeding and discharge ends of the ball milling drum are respectively connected to the sealed rotating connectors in the two support frames; A base is provided below the support plate, and two groups of angle adjustment components are provided between the base and the support plate for adjusting the angle of the ball mill drum. Flexible connecting pipes are connected between the suction fan, the screw feeder and the sealed rotating connecting piece. The outer surface of the ball mill drum is provided with a drain port and a steel ball drain port at both ends, and opening and closing components are installed on the surfaces of the drain port and the steel ball drain port. A telescopic connecting pipe is provided directly below the drain port, and a second lifting component is connected to the surface of the telescopic connecting pipe. A flexible drain pipe is connected to one side of the bottom end of the telescopic connecting pipe, and the flexible drain pipe extends to the outside of the box. A first lifting component is provided below the side of the steel ball drain port, and a detachable opening and closing driving component is connected between the first lifting component, the second lifting component and the two opening and closing components, respectively, for driving the opening and closing components to open or close; A positioning assembly is arranged between the ball mill drum and one of the support frames. The positioning assembly is electrically connected to the ball mill transmission assembly and is used to locate the stop rotation position of the ball mill drum.

[0006] Furthermore, the ball mill transmission assembly includes a first drive motor, which is fixed on the surface of the support plate through a support platform, and the driving end of the first drive motor is connected to a gear through a reduction box. A large gear ring is fixed on the outer surface of the ball mill drum, and the large gear ring is meshed with the gear.

[0007] Furthermore, the two groups of angle adjustment components have the same structure, and both include a cylinder, a slide, a first rotating frame and a second rotating frame. The bottom end of the first rotating frame is slidably and rotatably connected to the slide, the telescopic end of the cylinder is connected to the first rotating frame, one end of the second rotating frame is rotatably connected to the center of the first rotating frame, and the other end is rotatably connected to the surface of the base, the top end of the first rotating frame in one of the angle adjustment components is slidably and rotatably connected to the support plate, and the top end of the first rotating frame in the other angle adjustment component is rotatably connected to the support plate.

[0008] Furthermore, the opening and closing assembly includes a shell, the interior of the shell is rotatably connected to a threaded rod, and the outer surface of the threaded rod is threadedly sleeved with a blocking plate.

[0009] Furthermore, the opening and closing drive assembly includes a second drive motor fixed on the surface of the first lifting assembly and the second lifting assembly, the drive end of the second drive motor is connected to the second gear, one end of the threaded rod extends to the outside of the shell and is connected to the first gear, when the first lifting assembly or the second lifting assembly is raised, the second gear is meshed with the first gear.

[0010] Furthermore, the first lifting assembly includes a first electric push rod, the telescopic end of which is connected to a first fixed plate, and the second lifting assembly includes two second electric push rods, the telescopic ends of which are commonly connected to a second fixed plate, and the second fixed plate is fixedly connected to the upper part of the telescopic connecting tube.

[0011] Furthermore, a guide slide is provided directly below the steel ball discharge port, and the guide slide is connected to the steel ball discharge door provided on the surface side wall of the box body. The surface side wall of the box body is also provided with a transparent visual window, and a steel ball feeding door is provided on the top of the box body. A steel ball feeding cover is installed on the surface of the ball mill drum by bolts.

[0012] Furthermore, the positioning assembly includes an electromagnetic telescopic rod fixed on a bracket of the support frame, the telescopic end of the electromagnetic telescopic rod is connected to a fixed frame, a proximity switch is installed on the surface of the fixed frame, one end of the ball mill drum is provided with a slot matching the electromagnetic telescopic rod, the outer surface of the ball mill drum is connected with a protrusion, and the outer surface of the end of the electromagnetic telescopic rod close to the slot is provided with a spring sleeve.

[0013] Furthermore, a fixed cover is internally connected to one end of the ball mill drum close to the exhaust fan, and a plurality of filter holes are formed on the surface of the fixed cover.

[0014] The present invention provides a positive electrode black powder ball milling device for recycling waste batteries. It has the following beneficial effects: 1. The positive electrode black powder ball milling device for recycling waste batteries of the present invention makes the ball mill drum tilt back and forth during rotation to make grinding more complete and reduce dead angles. After ball milling, the exhaust fan and dust collector are arranged to quickly extract black powder and metal flakes from the inside of the ball mill drum and separate them, without manual screening, which greatly improves work efficiency; 2. The present invention uses a positioning component, an opening and closing component, an opening and closing transmission component and an angle adjustment mechanism to wash out the black powder attached to the inner lining of the ball mill drum and the surface of the steel balls by water injection and automatically discharge it. This not only cleans the ball mill device to avoid affecting the grinding effect, but also greatly improves the recovery rate of the black powder. At the same time, it also facilitates the automatic discharge of the steel balls to regularly detect the degree of wear, achieving multiple goals at one stroke. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A three-dimensional diagram of a positive electrode black powder ball milling device for recycling waste batteries according to the present invention; Figure 2 This is a main cross-sectional view of a positive electrode black powder ball milling device for recycling waste batteries of the present invention; Figure 3 It is a partial stereoscopic diagram of a positive electrode black powder ball milling device for recycling waste batteries of the present invention; Figure 4 This is a three-dimensional diagram of a positive electrode black powder ball milling device for recycling waste batteries of the present invention with the box removed; Figure 5 This is a diagram showing the internal structure of a ball milling drum in a positive electrode black powder ball milling device for recycling waste batteries of the present invention; Figure 6This is an enlarged view of point A in a positive electrode black powder ball milling device for recycling waste batteries of the present invention.

[0016] Among them, 1. Box body; 101. Transparent visual window; 102. Steel ball discharge door; 103. Steel ball feed door; 2. Ball mill drum; 201. Fixed cover; 202. Drain port; 203. Steel ball discharge port; 204. Filter hole; 3. Extraction fan; 4. Flexible connecting pipe; 5. Ball mill transmission assembly; 501. Large gear ring; 502. Gear; 503. First drive motor; 504. Support platform; 6. Opening and closing assembly; 601. Shell; 602. Threaded rod; 603. Blocking plate; 7. Sealed rotating connector; 8. Screw feeder; 9. Angle adjustment assembly; 901. Cylinder; 902. Sliding seat; 903. First rotating frame; 904 , second rotating frame; 10, opening and closing drive assembly; 1001, first gear; 1002, second gear; 1003, second drive motor; 11, first lifting assembly; 1101, first fixed plate; 1102, first electric push rod; 12, support plate; 13, base; 14, telescopic connecting pipe; 15, second lifting assembly; 1501, second fixed plate; 1502, second electric push rod; 16, flexible drainage pipe; 17, guide slide; 18, support frame; 19, positioning assembly; 1901, slot; 1902, bump; 1903, proximity switch; 1904, fixed frame; 1905, electromagnetic telescopic rod; 20, water inlet pipe. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] Embodiment 1:

[0019] like Figure 1-Figure 3As shown, an embodiment of the present invention provides a positive electrode black powder ball milling device for recycling waste batteries, including a box body 1, a ball milling drum 2 is arranged inside the box body 1, the arrangement of the box body 1 can reduce noise and prevent dust from overflowing during ball milling, two support frames 18 are arranged at both ends of the ball milling drum 2, support plates 12 are fixed to the bottoms of the two support frames 18, a ball milling transmission assembly 5 is arranged between the support plates 12 and the ball milling drum 2, the ball milling transmission assembly 5 includes a first drive motor 503, the first drive motor 503 is fixed to the surface of the support plate 12 through a support platform 504, the driving end of the first drive motor 503 is connected to a gear 502 through a reduction box, a large gear ring 501 is fixed to the outer surface of the ball milling drum 2, the large gear ring 501 is meshed with the gear 502, and the first drive motor 503 rotates to drive the gear 502 to rotate, thereby driving the ball milling drum 2 to rotate.

[0020] The two support frames 18 are both embedded with sealed rotating connectors 7, and the feeding and discharging ends of the ball mill 2 are respectively connected to the sealed rotating connectors 7 in the two support frames 18, so that the ball mill 2 can rotate on the two support frames 18 without affecting the entry and discharge of materials.

[0021] A screw feeder 8 is provided on the feeding side of the ball mill drum 2 for feeding positive electrode sheets so as to feed the positive electrode sheets broken into small pieces into the ball mill drum 2. The black powder on the surface of the positive electrode sheets is separated by the mutual friction between the steel balls and the positive electrode sheets when the ball mill drum 2 rotates. An exhaust fan 3 is provided on the discharge side of the ball mill drum 2. After the ball milling is completed, the ball mill drum 2 rotates, driving the black powder, the de-powdered metal sheets and the steel ball drum. Since the black powder and the metal sheets are light in weight, they can be quickly extracted by the exhaust fan 3, leaving only the steel balls. A dust collector is connected to the air outlet end of the exhaust fan 3 for separating the black powder and the metal sheets. The dust collector can be a bag dust collector. The black powder is attached to the bag dust collector and separated from the metal sheets. The metal sheets can be thoroughly crushed after being discharged, and the black powder is recovered for a second time by flotation, with a high recovery rate.

[0022] Embodiment 2:

[0023] like Figure 1-Figure 4 As shown, in order to make the ball milling more sufficient, further design is carried out. A base 13 is provided under the support plate 12, and two sets of angle adjustment components 9 are provided between the base 13 and the support plate 12 for adjusting the angle of the ball mill drum 2. A flexible connecting pipe 4 is connected between the suction fan 3, the spiral feeder 8 and the sealed rotating connector 7. The flexible connecting pipe 4 can be bent and extended to avoid being restricted when adjusting the angle of the ball mill drum 2.

[0024] The two groups of angle adjustment components 9 have the same structure, both including a cylinder 901, a slide 902, a first rotating frame 903 and a second rotating frame 904. The bottom end of the first rotating frame 903 is slidably and rotatably connected to the slide 902, the telescopic end of the cylinder 901 is connected to the first rotating frame 903, one end of the second rotating frame 904 is rotatably connected to the center of the first rotating frame 903, and the other end is rotatably connected to the surface of the base 13. The top end of the first rotating frame 903 in one of the angle adjustment components 9 is slidably and rotatably connected to the support plate 12, and the top end of the first rotating frame 903 in the other angle adjustment component 9 is rotatably connected to the support plate 12. When the cylinders 901 of the two angle adjustment components 9 are extended in sequence, the ball milling drum 2 can be shaken left and right, thereby making the ball milling more uniform.

[0025] At the same time, in order to avoid the backflow of materials during shaking, electric valves (not shown in the figure) can be respectively provided at the discharge port of the screw feeder 8 and the feed port of the exhaust fan 3. When the ball mill drum needs to be cleaned and the materials need to be ball milled, the electric valves at both ends can be closed to avoid backflow.

[0026] Embodiment 3:

[0027] like Figure 1-Figure 6 As shown, in order to facilitate the cleaning of the inside of the ball mill drum 2 and discharge the black powder attached to the inner lining of the ball mill drum 2 and the steel balls, a further design is made: The discharge end of the screw feeder 8 is connected to a water inlet pipe 20 so that the cleaning water can flow into the interior of the ball mill 2. A liquid discharge port 202 and a steel ball discharge port 203 are respectively provided at both ends of the outer surface of the ball mill 2. The surfaces of the liquid discharge port 202 and the steel ball discharge port 203 are both installed with an opening and closing assembly 6. A telescopic connecting pipe 14 is provided directly below the liquid discharge port 202. The surface of the telescopic connecting pipe 14 is connected to a second lifting assembly 15. A flexible liquid discharge pipe 16 is connected to one side of the bottom end of the telescopic connecting pipe 14. The flexible liquid discharge pipe 16 extends to the outside of the box 1. A first lifting assembly 11 is provided below the side of the steel ball discharge port 203. Separable opening and closing drive assemblies 10 are respectively connected between the first lifting assembly 11, the second lifting assembly 15 and the two opening and closing assemblies 6 to drive the opening and closing assemblies 6 to open or close; A positioning assembly 19 is provided between the ball mill drum 2 and one of the support frames 18 . The positioning assembly 19 is electrically connected to the ball mill transmission assembly 5 and is used to position the ball mill drum 2 to stop rotating.

[0028] The opening and closing assembly 6 includes a shell 601 , the interior of the shell 601 is rotatably connected with a threaded rod 602 , and the outer surface of the threaded rod 602 is threadedly sleeved with a blocking plate 603 .

[0029] The opening and closing drive assembly 10 includes a second drive motor 1003 fixed on the surfaces of the first lifting assembly 11 and the second lifting assembly 15, and the drive end of the second drive motor 1003 is connected to the second gear 1002. One end of the threaded rod 602 extends to the outside of the shell 601 and is connected to the first gear 1001. When the first lifting assembly 11 or the second lifting assembly 15 is raised, the second gear 1002 is meshed with the first gear 1001, wherein the first gear 1001 and the second gear 1002 can be two bevel gears meshing, or one can be a spur gear and the other can be a crown gear, thereby realizing vertical transmission. The first lifting assembly 11 includes a first electric push rod 1102, and the telescopic end of the first electric push rod 1102 is connected to the first fixed plate 1101. The second lifting assembly 15 includes two second electric push rods 1502, and the telescopic ends of the two second electric push rods 1502 are commonly connected to the second fixed plate 1501, and the second fixed plate 1501 is fixedly connected to the upper part of the telescopic connecting tube 14.

[0030] A guide slide 17 is arranged directly below the steel ball discharge port 203, and the guide slide 17 is connected to the steel ball discharge door 102 arranged on the surface side wall of the box body 1, so as to facilitate the discharge of the steel balls. A transparent visual window 101 is also arranged on the surface side wall of the box body 1, and a steel ball feeding door 103 is arranged on the top of the box body 1. A steel ball feeding cover is installed on the surface of the ball mill drum 2 by bolts.

[0031] The positioning assembly 19 includes an electromagnetic telescopic rod 1905 fixed on the bracket of the support frame 18, the telescopic end of the electromagnetic telescopic rod 1905 is connected to the fixed frame 1904, and a proximity switch 1903 is installed on the surface of the fixed frame 1904. A slot 1901 matching the electromagnetic telescopic rod 1905 is opened at one end of the ball mill 2, and a protrusion 1902 is connected to the outer surface of the ball mill 2. The outer surface of the end of the electromagnetic telescopic rod 1905 close to the slot 1901 is provided with a spring sleeve.

[0032] A fixed cover 201 is internally connected to one end of the ball mill drum 2 close to the exhaust fan 3. A plurality of filter holes 204 are provided on the surface of the fixed cover 201. When the sewage containing black powder is discharged, the filter holes 204 can block the steel balls to prevent the steel balls from being discharged.

[0033] Working principle: When the inside of the ball mill drum 2 needs to be cleaned, water is first released into the ball mill drum 2 through the water inlet pipe 20, and then the ball mill transmission component 5 drives the ball mill drum 2 to rotate, driving the water flow and the steel ball to move, so that the black powder is washed into the water, and then the electromagnetic telescopic rod 1905 is started, and the electromagnetic telescopic rod 1905 extends, so that the spring sleeve contacts the end face of the ball mill drum 2. When the ball mill drum 2 rotates until the spring sleeve can be inserted into the slot 1901, the proximity switch 1903 is just in contact with the bump 1902. The first drive motor 503 stops rotating the ball mill drum 2 and brakes the ball mill drum 2, so that the ball mill drum 2 can accurately stop and be controlled to the correct position. After the positioning is completed, the second lifting assembly 15 is started to drive the telescopic connecting pipe 14 to connect with the drain port 202. At the same time, the second gear 1002 on the second lifting assembly 15 is meshed with the first gear 1001 on one side of the opening and closing assembly 6. Then, the second drive motor 1003 is started to drive the blocking plate 603 to move through the transmission, so that the drain port 202 can be opened. Start the cylinder 901 of the angle adjustment assembly 9 at one end away from the drain port 202, so that the cylinder 901 extends, thereby driving the end away from the drain port 202 to lift up, and the sewage with black powder is completely discharged from the drain port 202 through the back and forth extension and shaking of the cylinder 901, and the black powder can be recovered by filtering; When the steel balls need to be discharged, the first lifting component 11 is started in the same way, and the second gear 1002 on the first lifting component 11 is meshed with the first gear 1001 on one side of the opening and closing component 6. Then, the second drive motor 1003 is started to drive the sealing plate 603 to move through the transmission, so that the steel ball discharge port 203 can be opened, and the cylinder 901 of the angle adjustment component 9 away from the end of the steel ball discharge port 203 is started to extend the cylinder 901, thereby driving the end away from the steel ball discharge port 203 to be lifted, and the steel balls are discharged from the ball mill drum 2 through the back and forth extension and shaking of the cylinder 901, and discharged to the outside of the box body 1 through the guide slide 17.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A positive electrode black powder ball milling device for recycling waste batteries, comprising a housing (1), a ball milling drum (2) being arranged inside the housing (1), two support frames (18) being arranged at both ends of the ball milling drum (2), support plates (12) being fixed at the bottoms of the two support frames (18), a ball milling transmission assembly (5) being arranged between the support plates (12) and the ball milling drum (2), characterized in that: A screw feeder (8) is provided on the feeding side of the ball mill drum (2) for feeding positive electrode sheets, and a discharge end of the screw feeder (8) is connected to a water inlet pipe (20). An exhaust fan (3) is provided on the discharge side of the ball mill drum (2), and a dust collector is connected to the air outlet end of the exhaust fan (3) for separating black powder from metal sheets. A sealed rotating connector (7) is embedded inside the two support frames (18), and the feeding and discharge ends of the ball mill drum (2) are respectively connected to the sealed rotating connectors (7) in the two support frames (18); A base (13) is provided below the support plate (12); two groups of angle adjustment components (9) are provided between the base (13) and the support plate (12) for adjusting the angle of the ball mill drum (2); and flexible connecting pipes (4) are connected between the suction fan (3), the screw feeder (8) and the sealed rotating connecting member (7); The outer surfaces of the ball mill drum (2) are respectively provided with a liquid discharge port (202) and a steel ball discharge port (203), and the surfaces of the liquid discharge port (202) and the steel ball discharge port (203) are both installed with an opening and closing assembly (6). A telescopic connecting pipe (14) is provided directly below the liquid discharge port (202), and the surface of the telescopic connecting pipe (14) is connected to a second lifting assembly (15). A flexible liquid discharge pipe (16) is connected to one side of the bottom end of the telescopic connecting pipe (14), and the flexible liquid discharge pipe (16) extends to the outside of the box (1). A first lifting assembly (11) is provided below the side of the steel ball discharge port (203), and a detachable opening and closing drive assembly (10) is respectively connected between the first lifting assembly (11), the second lifting assembly (15) and the two opening and closing assemblies (6), for driving the opening and closing assemblies (6) to open or close; A positioning assembly (19) is provided between the ball mill drum (2) and one of the support frames (18); the positioning assembly (19) is electrically connected to the ball mill transmission assembly (5) and is used to locate the stop rotation position of the ball mill drum (2).

2. The positive electrode black powder ball milling device for recycling waste batteries according to claim 1 is characterized by: The ball mill transmission assembly (5) comprises a first drive motor (503), the first drive motor (503) being fixed on the surface of a support plate (12) via a support platform (504), a drive end of the first drive motor (503) being connected to a gear (502) via a reduction gear box, a large toothed ring (501) being fixed to the outer surface of the ball mill drum (2), and the large toothed ring (501) being meshingly connected to the gear (502).

3. The positive electrode black powder ball milling device for recycling waste batteries according to claim 1 is characterized in that: The two groups of angle adjustment components (9) have the same structure, and both include a cylinder (901), a slide seat (902), a first rotating frame (903) and a second rotating frame (904); the bottom end of the first rotating frame (903) is slidably and rotatably connected to the slide seat (902); the telescopic end of the cylinder (901) is connected to the first rotating frame (903); one end of the second rotating frame (904) is rotatably connected to the center of the first rotating frame (903), and the other end is rotatably connected to the surface of the base (13); the top end of the first rotating frame (903) in one angle adjustment component (9) is slidably and rotatably connected to the support plate (12), and the top end of the first rotating frame (903) in the other angle adjustment component (9) is rotatably connected to the support plate (12).

4. The positive electrode black powder ball milling device for recycling waste batteries according to claim 1 is characterized in that: The opening and closing assembly (6) comprises a shell (601), the interior of the shell (601) being rotatably connected to a threaded rod (602), and the outer surface of the threaded rod (602) being threadably sleeved with a blocking plate (603).

5. The positive electrode black powder ball milling device for recycling waste batteries according to claim 4 is characterized in that: The opening and closing drive assembly (10) comprises a second drive motor (1003) fixed on the surface of the first lifting assembly (11) and the second lifting assembly (15); a drive end of the second drive motor (1003) is connected to a second gear (1002); one end of the threaded rod (602) extends to the outside of the housing (601) and is connected to the first gear (1001); when the first lifting assembly (11) or the second lifting assembly (15) is raised, the second gear (1002) meshes with the first gear (1001).

6. The positive electrode black powder ball milling device for recycling waste batteries according to claim 5 is characterized by: The first lifting assembly (11) comprises a first electric push rod (1102), the telescopic end of the first electric push rod (1102) being connected to a first fixed plate (1101), and the second lifting assembly (15) comprises two second electric push rods (1502), the telescopic ends of the two second electric push rods (1502) being commonly connected to a second fixed plate (1501), and the second fixed plate (1501) being fixedly connected to the upper part of the telescopic connecting tube (14).

7. The positive electrode black powder ball milling device for recycling waste batteries according to claim 1 is characterized by: A guide slide (17) is arranged directly below the steel ball discharge port (203), and the guide slide (17) is connected to a steel ball discharge door (102) arranged on the surface side wall of the box body (1). The surface side wall of the box body (1) is also provided with a transparent visual window (101). A steel ball feed door (103) is arranged on the top of the box body (1), and a steel ball feed cover is installed on the surface of the ball mill drum (2) by means of bolts.

8. The positive electrode black powder ball milling device for recycling waste batteries according to claim 1 is characterized by: The positioning assembly (19) comprises an electromagnetic telescopic rod (1905) fixed on a bracket of a support frame (18); the telescopic end of the electromagnetic telescopic rod (1905) is connected to a fixing frame (1904); a proximity switch (1903) is installed on the surface of the fixing frame (1904); a slot (1901) matching the electromagnetic telescopic rod (1905) is provided at one end of the ball mill drum (2); a protrusion (1902) is connected to the outer surface of the ball mill drum (2); and a spring sleeve is sleeved on the outer surface of one end of the electromagnetic telescopic rod (1905) close to the slot (1901).

9. The positive electrode black powder ball milling device for recycling waste batteries according to claim 1 is characterized by: A fixed cover (201) is internally connected to one end of the ball mill drum (2) close to the exhaust fan (3), and a plurality of filter holes (204) are provided on the surface of the fixed cover (201).

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