Recycling equipment for waste lithium battery slurry

Abstract

The utility model belongs to the technical field of lithium battery recycling, and particularly relates to waste lithium battery slurry recycling equipment which comprises an equipment body, a cavity is formed in the equipment body, the middle of the cavity is divided into a solid-liquid separation mechanism and a solid smashing mechanism through a first baffle, and the solid smashing mechanism comprises a crushing device and a smashing device. The end face of the top of the equipment body is fixedly connected with a solid recycling box, the lower side of the equipment body is provided with a liquid recycling box, slurry is poured into the equipment body from the feeding port, waste residues in the slurry are thoroughly smashed after the slurry passes through the crushing device and the smashing device, then the slurry enters the solid-liquid separation device, and the waste residues and waste liquid in the slurry are separated; the slurry is collected into the solid recycling box and the liquid recycling box, the solid in the slurry is smashed, the overall working efficiency is improved, and meanwhile, the normal rotation in the separation chamber ensures the working safety performance.

Description

Technical Field

[0001] The utility model belongs to the technical field of lithium battery recycling, and in particular relates to a recycling device for waste lithium battery slurry. Background Art

[0002] Lithium-ion batteries are widely used in mobile communications, laptops, electric bicycles, electric vehicles and other fields due to their high energy density, light weight, long service life, low self-discharge rate and no memory effect. The main parts of lithium-ion batteries are positive and negative electrodes. When making positive and negative electrode materials of lithium batteries, unqualified slurry produced due to incorrect ratios, and waste liquid produced by cleaning storage tanks, pipes or the ground will inevitably produce waste slurry, which not only wastes resources, but also easily causes environmental pollution if not handled properly. Therefore, in order to save costs and protect the environment, it is necessary to recycle waste slurry.

[0003] After searching, relevant technical solutions have appeared in the prior art, such as the Chinese patent with application number 202222238785.9, which discloses a battery positive electrode slurry solid-liquid separation device, which mainly includes an organism, a separation mechanism, and a feeding port. The separation mechanism includes a separation cylinder, a drive motor, a rotating shaft, etc. The separation mechanism is driven by the drive motor to transport the slurry to the interior of the separation room, squeeze the slurry residue through a small space, and finally make the waste liquid flow out from the lower outlet and the waste residue be discharged from the upper outlet.

[0004] However, in the above technical solution, the separation mechanism alone cannot complete the separation and recovery of the slurry. The larger solids or oversized solid particles in the waste are not processed. The larger solids will cause the slurry to enter the separation room and squeeze the space, causing the separation to deform and damage the separation room. At the same time, the squeezing effect of oversized solid particles in the separation room is very poor, and the waste liquid and waste residue in the slurry cannot be completely separated. Utility Model Content

[0005] The utility model aims to solve the problem of large solids or particles in the slurry in the prior art and proposes the following technical solutions:

[0006] A recycling device for waste lithium battery slurry comprises: a device main body, a cavity is opened in the body, a baffle No. 1 is vertically fixedly connected to the middle of the cavity, the cavity is divided into a solid-liquid separation mechanism and a solid crushing mechanism by the baffle No. 1, and a feed inlet is arranged on the top of the device main body, and the feed inlet is located above the solid crushing mechanism.

[0007] As a preferred embodiment of the above technical solution, the solid crushing mechanism includes a crushing device and a crushing device, a No. 2 baffle is arranged between the crushing device and the crushing device, a discharge port is opened in the middle of the No. 2 baffle, the crushing device is located directly below the No. 2 baffle, a solid recovery box is fixedly connected to the top end face of the equipment body, a liquid recovery box is arranged on the lower side of the equipment body, the liquid recovery box is located directly below the solid-liquid separation mechanism, and a plurality of support piles are fixedly connected to the bottom end face of the equipment body.

[0008] As a preferred embodiment of the above technical solution, the crushing device includes a rotating rod and a crushing knife, the crushing knife is arranged around the outside of the rotating rod, and a No. 1 motor is arranged on the upper end surface of the equipment body. The No. 1 motor is located directly above the rotating rod, and the rotating rod passes through the upper end surface of the equipment body and is connected to the No. 1 motor.

[0009] As a preferred embodiment of the above technical solution, the crushing device includes a No. 1 crushing roller and a No. 2 crushing roller that are meshed with each other. The No. 1 crushing roller and the No. 2 crushing roller are both located at the same height below the No. 2 baffle. Both ends of the No. 1 crushing roller are rotatably mounted on the inner wall of the equipment body. One end of the No. 2 crushing roller is rotatably connected to the inner wall of the equipment body, and the other end passes through the side wall of the equipment body and is connected to the No. 2 motor.

[0010] As a preferred embodiment of the above technical solution, cleaning brushes are fixedly installed under the No. 1 crushing roller and the No. 2 crushing roller, and the bristle part of the cleaning brushes is in contact with the surface of the crushing roller.

[0011] As a preferred embodiment of the above technical solution, the lower end surface of the solid pulverizing device is inclined toward the solid-liquid separation mechanism, and the No. 1 baffle is not connected to the bottom end surface of the equipment body.

[0012] As a preferred embodiment of the above technical solution, a bearing is provided on the outer side of the portion of the rotating rod that passes through the upper end surface of the equipment body.

[0013] The beneficial effects of the utility model are:

[0014] (1) The utility model improves the recovery efficiency by crushing the solids and particles in the slurry;

[0015] (2) The utility model avoids the appearance of large solids in the separation chamber, thereby increasing the safety during slurry recovery. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The figure shows the overall structure of a waste lithium battery slurry recovery device in Example 1;

[0017] Figure 2 Shown is a cross-sectional view of a waste lithium battery slurry recovery device in Example 1.

[0018] In the figure: 1. Equipment body; 2. Cavity; 3. Baffle No. 1; 4. Solid crushing mechanism; 41. Crushing device; 411. Rotating rod; 412. Crushing knife; 413. Motor No. 1; 414. Bearing; 42. Crushing device; 421. Crushing roller No. 1; 422. Crushing roller No. 2; 423. Motor No. 2; 424. Cleaning brush; 43. Baffle No. 2; 44. Feeding port; 5. Solid-liquid separation mechanism; 6. Feeding port; 7. Solid recovery box; 8. Liquid recovery box; 9. Support piles. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the embodiments of the present utility model clearer, the technical solution of the present utility model will be clearly and completely described below in conjunction with the embodiments.

[0020] Example 1

[0021] like Figure 1-2 As shown, a recycling device for waste lithium battery slurry comprises: a device body 1, a cavity 2 is opened in the body, a baffle plate 3 is vertically fixedly connected to the middle of the cavity 2, the cavity 2 is divided into a solid-liquid separation mechanism 5 and a solid crushing mechanism 4 by the baffle plate 3, the solid-liquid separation device 5 comprises a separation cylinder, a rotating shaft and spiral blades, etc., the rotating shaft and the spiral blades form a screw conveyor for conveying larger materials upward, wherein filter cloth is installed on the inner surface of the separation cylinder and the inside of the discharge port, a driving motor is installed on the uppermost end of the separation cylinder, and a liquid outlet is arranged at the bottom of the separation cylinder and a slag outlet is arranged at the top side. The above are all prior arts known to those skilled in the art and will not be described in detail here. The top of the device body 1 A feed inlet 6 is provided, and the feed inlet 6 is located above the solid crushing mechanism 4. The solid crushing mechanism 4 includes a crushing device 41 and a crushing device 42. A No. 2 baffle is provided between the crushing device 41 and the crushing device 42. A discharge port is provided in the middle of the No. 2 baffle. The crushing device 42 is located directly below the No. 2 baffle. A solid recovery box 7 is fixedly connected to the top end face of the equipment main body 1, and a liquid recovery box 8 is provided on the lower side of the equipment main body 1. The liquid recovery box 8 is located directly below the solid-liquid separation mechanism 5. A plurality of supporting piles 9 are fixedly connected to the bottom end face of the equipment main body 1. The bottom end face of the equipment main body 1 located at the solid crushing mechanism 4 is inclined toward the solid-liquid separation mechanism 5, and the No. 1 baffle 3 and the bottom end face of the equipment main body 1 are not connected to form a limiting hole.

[0022] By pouring the slurry from the feed inlet 6, the slurry passes through the cavity 2 and enters the crushing device 41 in the solid crushing mechanism 4. After continuous fixing treatment inside the crushing device 41 and the crushing device 42, the slurry slides to the bottom end surface of the solid crushing mechanism 4 through the rotation of the crushing roller, and enters the solid-liquid separation mechanism 5 through the inclined bottom end surface and the limiting hole. A large amount of waste liquid in the slurry flows into the liquid recovery tank 8 through the bottom discharge port of the solid-liquid separation mechanism 5. The solid-liquid separation mechanism 5 is started, and the slurry is transported to the inside of the separation room through the spiral blades, and the slurry residue is squeezed through the smaller space. The waste liquid is squeezed through the filter cloth on the outer wall, and the waste liquid is squeezed out and left downward in the liquid recovery tank 8. The remaining waste residue slides into the solid recovery tank 7 until the residue discharge point at the top.

[0023] like Figure 2 As shown, the crushing device 41 includes a rotating rod 411 and a crushing knife 412, the crushing knife 412 is arranged around the outer side of the rotating rod 411, and a No. 1 motor 413 is arranged on the upper end surface of the equipment body 1, and the No. 1 motor 413 is located directly above the rotating rod 411, and the rotating rod 411 passes through the upper end surface of the equipment body 1 and is connected to the No. 1 motor 413. The crushing device 42 includes a No. 1 crushing roller 421 and a No. 2 crushing roller 422, both of which are located at the same height below the No. 2 baffle, and both ends of the No. 1 crushing roller 421 are rotatably mounted on the inner wall of the equipment body 1, one end of the No. 2 crushing roller 422 is rotatably connected to the inner wall of the equipment body 1, and the other end passes through the side wall of the equipment body 1 and is connected to the No. 2 motor 423. Cleaning brushes 424 are fixedly installed below the No. 1 crushing roller 421 and the No. 2 crushing roller 422, and the bristle part of the cleaning brush 424 contacts the surface of the crushing roller.

[0024] By turning on the power of the No. 1 motor 413 and the No. 2 motor 423, the bearing 414 drives the rod to rotate, and the No. 2 crushing roller 422 also rotates. The rotation of the rotating rod 411 drives the rotation of the crushing knife 412, and the rotation of the No. 2 crushing roller 422 drives the No. 1 crushing roller 421 to rotate, and the slurry is poured from the feed inlet 6. The slurry passes through the cavity 2 and enters the crushing device 41 in the solid crushing mechanism 4. Under the rotation of the crushing knife 412, the slurry is stirred by the crushing knife 412, and the larger solids in the slurry are broken by the crushing knife 412 and become smaller The particles, after being processed by the crushing device 41, fall onto the No. 2 baffle plate, slide to the discharge port, and enter the crushing device 42 through the discharge port. Under the rotation of the No. 1 crushing roller 421 and the No. 2 crushing roller 422, the slurry flows between the two crushing rollers, and the fine solids and debris inside the slurry are completely crushed and crushed, and then slide to the bottom end surface of the solid crushing mechanism 4 through the rotation of the crushing rollers. The solids adhered to the surface of the crushing roller are brushed off by the cleaning brush 424 under the crushing roller, and fall to the bottom end surface of the solid crushing mechanism 4 together with the slurry.

[0025] Working principle: waste lithium battery slurry is recycled in the main body 1 of the equipment. First, the power of the No. 1 motor 413 and the No. 2 motor 423 is turned on, the bearing 414 drives the rod to rotate, and the No. 2 crushing roller 422 also rotates. The rotation of the rotating rod 411 drives the rotation of the crushing knife 412, and the rotation of the No. 2 crushing roller 422 drives the No. 1 crushing roller 421 to rotate, and the slurry is poured from the inlet 6. The slurry passes through the cavity 2 and enters the crushing device 41 in the solid crushing mechanism 4. Under the rotation of the crushing knife 412, the slurry is stirred by the crushing knife 412, and the larger solids in the slurry are broken by the crushing knife 412 and become smaller particles. After being processed by the crushing device 41, the slurry falls on the No. 2 baffle 43, slides to the discharge port 44, and enters the inside of the crushing device 42 through the discharge port. Under the rotation of the No. 1 crushing roller 421 and the No. 2 crushing roller 422, the slurry flows between the two crushing rollers. The fine solids and debris in the slurry are completely crushed and crushed, and then slide to the bottom end surface of the solid crushing mechanism 4 through the rotation of the crushing roller. The solids adhering to the surface of the crushing roller are brushed off by the cleaning brush 424 under the crushing roller, and fall to the bottom end surface of the solid crushing mechanism 4 together with the slurry. Through the inclined bottom end surface and the limiting hole, the slurry enters the solid-liquid separation mechanism 5. A large amount of waste liquid in the slurry flows into the liquid recovery tank 8 through the bottom discharge port of the solid-liquid separation mechanism 5. The solid-liquid separation mechanism 5 is started, and the slurry is transported to the inside of the separation cylinder through the spiral blades, and the slurry residue is squeezed through the smaller space. The waste liquid is squeezed out through the filter cloth on the outer wall and left downward in the liquid recovery tank 8. The remaining waste residue slides into the solid recovery tank 7 until the uppermost slag discharge point, breaking the solids in the slurry improves the overall work efficiency, and the normal rotation in the separation room ensures the safety performance of the work.

[0026] The above embodiments are only used to illustrate the technical solution of the present invention, but not to limit it.

Claims

1. A recycling device for waste lithium battery slurry, characterized in that: include: The device body (1) has a cavity (2) formed therein, a first baffle (3) is vertically fixedly connected to the middle of the cavity (2), a solid-liquid separation mechanism (5) and a solid crushing mechanism (4) are respectively provided on both sides of the first baffle (3), and a feed inlet (6) is provided at the top of the device body (1), and the feed inlet (6) is located above the solid crushing mechanism (4).

2. The waste lithium battery slurry recovery equipment according to claim 1, characterized in that: The solid pulverizing mechanism (4) comprises a crushing device (41) and a pulverizing device (42); a second baffle (43) is arranged between the crushing device (41) and the pulverizing device (42); a discharge port (44) is provided in the middle of the second baffle (43); the pulverizing device (42) is located directly below the second baffle (43); a solid recovery box (7) is fixedly connected to the top end surface of the equipment body (1); a liquid recovery box (8) is arranged on the lower side of the equipment body (1); the liquid recovery box (8) is located directly below the solid-liquid separation mechanism (5); and a plurality of support piles (9) are fixedly connected to the bottom end surface of the equipment body (1).

3. The waste lithium battery slurry recovery equipment according to claim 2, characterized in that: The crushing device (41) comprises a rotating rod (411) and a crushing knife (412), wherein the crushing knife (412) is arranged around the outer side of the rotating rod (411), a first motor (413) is arranged on the upper end surface of the equipment body (1), and the rotating rod (411) passes through the upper end surface of the equipment body (1) and is connected to the first motor (413).

4. The waste lithium battery slurry recovery equipment according to claim 2, characterized in that: The pulverizing device (42) comprises a first pulverizing roller (421) and a second pulverizing roller (422) which are meshed with each other. The first pulverizing roller (421) and the second pulverizing roller (422) are both located at the same height below the second baffle. Both ends of the first pulverizing roller (421) are rotatably mounted on the inner wall of the device body (1). One end of the second pulverizing roller (422) is rotatably connected to the inner wall of the device body (1), and the other end passes through the side wall of the device body (1) and is connected to the second motor (423).

5. The waste lithium battery slurry recovery equipment according to claim 4, characterized in that: Cleaning brushes (424) are fixedly installed below the first crushing roller (421) and the second crushing roller (422), and the bristle parts of the cleaning brushes (424) are in contact with the surfaces of the crushing rollers.

6. The waste lithium battery slurry recovery equipment according to claim 2, characterized in that: The lower end surface of the solid pulverizing device (42) is inclined toward the solid-liquid separation mechanism (5), and the first baffle (3) is not connected to the bottom end surface of the equipment body (1).

7. The waste lithium battery slurry recovery equipment according to claim 3, characterized in that: A bearing (414) is arranged on the outer side of the portion of the rotating rod (411) that passes through the upper end surface of the device body (1).

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