Negative plate material recovery device

Abstract

The utility model relates to a negative plate material recovery device which comprises a soaking tower, the separating and conveying assembly is arranged below the soaking tower; the rotary separating part is arranged below the soaking tower and is arranged in the separating and conveying assembly, so that the copper foil is separated; the cyclone assembly is communicated with the separating and conveying assembly, so that the graphite water in the separating and conveying assembly enters the cyclone assembly; the graphite water tank is arranged below the cyclone assembly and is communicated with the cyclone assembly; the filtering conveyor belt assembly is arranged between the graphite water tank and the cyclone assembly and is communicated with the graphite water tank; the graphite briquetting part is communicated with the filtering conveyor belt to obtain graphite blocks; the lithium water tank is adjacent to the graphite water tank and is connected with the filtering conveyor belt assembly through a pipeline so as to wash the filtering conveyor belt assembly; and the lithium extraction device is communicated with the lithium water tank and the separating and conveying assembly. According to the utility model, the copper foil, graphite and lithium in the negative plate material are separated and recovered one by one by arranging the components, and the water for separating the material is repeatedly utilized.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery material recovery, in particular to a negative electrode sheet material recovery device. Background Art

[0002] With the continuous consumption of traditional petroleum energy, new energy sources are being introduced, and new energy vehicles are springing up everywhere. With the advantages of energy saving and environmental protection, fast acceleration, stable operation and better quietness, new energy vehicles have occupied half of the automobile market. However, the problem of waste and recycling of lithium batteries in new energy vehicles comes with it. Due to the limited cycle life of lithium batteries, they need to be replaced regularly every time they reach a certain number of charge and discharge times. Therefore, the recycling and utilization of lithium battery materials can bring huge economic value.

[0003] Lithium battery materials include a shell, a positive electrode sheet, a negative electrode sheet, an electrolyte, and a diaphragm. The copper foil, graphite, and lithium contained in the negative electrode sheet all have great economic value. Separating these different materials and recycling them not only saves energy, but also solves the problem of large-scale accumulation of waste lithium batteries. In the prior art, the separation of negative electrode sheet materials often requires repeated soaking and stirring to separate the copper foil. Repeated stirring causes damage to the copper foil, causing copper slag to enter the water containing graphite, making it impossible to separate the subsequent copper slag. The recovery of graphite requires the use of a large amount of water, which in turn causes a waste of water resources. In addition, due to the high graphite content in the graphite, it is impossible to extract lithium with a high purity. Therefore, the recovery of negative electrode sheet materials still has the above-mentioned shortcomings, that is, it is impossible to recover high-concentration graphite and lithium.

[0004] Therefore, the technical problems existing in the above-mentioned prior art need to be solved urgently. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the above-mentioned shortcomings and deficiencies of the prior art, the utility model provides a negative electrode sheet material recovery device and process method, which solves the technical problems that the prior art often requires repeated immersion and stirring to separate the copper foil for the separation of the negative electrode sheet materials, and the copper foil is damaged due to repeated stirring, resulting in the copper slag entering the water containing graphite, making it impossible to separate the subsequent copper slag, and the recovery of graphite requires the use of a large amount of water, thereby causing a waste of water resources, and due to the high graphite content in the graphite, it is impossible to recover and extract graphite and lithium with a high concentration.

[0007] (II) Technical solution

[0008] In order to achieve the above-mentioned purpose, the main technical solutions adopted by the utility model include:

[0009] The utility model provides a negative electrode sheet material recovery device, comprising: a soaking tower; a separation and transmission component, which is arranged below the soaking tower; a rotating separation piece, which is arranged below the soaking tower and inside the separation and transmission component, so as to separate copper foil; a cyclone component, which is connected with the separation and transmission component, so that graphite in the separation and transmission component enters the cyclone component; a graphite pool, which is arranged below the cyclone component and is connected with the cyclone component; a filtering conveyor belt component, which is arranged between the graphite pool and the cyclone component and is connected with the graphite pool; a graphite block component, which is connected with the filtering conveyor belt to obtain graphite blocks; a lithium water pool, which is arranged adjacent to the graphite pool and is connected with the filtering conveyor belt component through a pipeline to wash the filtering conveyor belt component; and a lithium extraction device, which is connected with the lithium water pool and the separation and transmission component.

[0010] Optionally, the separation and conveying assembly includes: a first separation tank, arranged below the immersion tower; a first conveyor belt, arranged at the upper part of the first separation tank and connected to the rotating separation element; a first flushing component, arranged on both sides of the first conveyor belt; a second separation tank, connected to the first conveyor belt and the first flushing component; a second conveyor belt, arranged inside the second separation tank and connected to the first conveyor belt; a second flushing component, arranged on both sides of the second conveyor belt and connected to the second separation tank.

[0011] Optionally, a copper foil briquetting machine is arranged below the second conveyor belt.

[0012] Optionally, the cyclone assembly includes: a first cyclone connected to the first separation tank; and a second cyclone connected to the first cyclone.

[0013] Optionally, the graphite pool includes: a graphite buffer pool, which is arranged below the first cyclone and connected to the first cyclone; and a graphite precipitation pool, which is arranged below the second cyclone and connected to the second cyclone.

[0014] Optionally, an overflow plate is disposed between the lithium water pool and the graphite precipitation pool, thereby limiting the overflow height in the graphite precipitation pool.

[0015] Optionally, the filtering conveyor belt assembly includes: a filtering conveyor belt, which is arranged below the second cyclone to filter and convey the graphite processed by the second cyclone; a groove conveyor belt, which is arranged inside the filtering conveyor belt, rotates synchronously with the filtering conveyor belt, and is connected to the graphite sedimentation tank; and a groove, which is arranged on the groove conveyor belt and faces the filtering conveyor belt.

[0016] Optionally, a hydraulic pump is connected to the graphite pressed part to provide pressure to the graphite pressed part.

[0017] Optionally, a vacuum pump is provided on the side of the grooved conveyor belt to provide suction to the grooved conveyor belt.

[0018] (III) Beneficial effects

[0019] The beneficial effects of the utility model are:

[0020] The utility model provides a negative electrode sheet material recovery device, which allows the negative electrode sheet material to be reasonably immersed in an immersion tower so that the copper foil in the negative electrode sheet material has a certain degree of separation from other materials, and then passes through a separation and transmission component below for secondary immersion, and through a rotating separation piece inside the separation and transmission component, the copper foil in the negative electrode sheet material is separated by limiting the rotation speed, thereby realizing the recovery of the copper foil;

[0021] The remaining materials enter the cyclone separation component through the separation and transmission component, and are separated by cyclone in the cyclone component to obtain high-concentration graphite-lithium water and low-concentration graphite-lithium water. The high-concentration graphite-lithium water enters the filtering conveyor belt component, and is filtered to obtain ultra-high-concentration graphite-lithium water. The ultra-high-concentration graphite-lithium water is then conveyed to the graphite briquetting component for briquetting and squeezing, thereby obtaining separated graphite blocks, thereby realizing graphite recovery.

[0022] Low-concentration graphite-lithium water enters the graphite pool for buffering and precipitation. After buffering and precipitation, lithium water is obtained and enters the lithium water pool. The squeezed lithium water obtained in the water squeezing process also enters the lithium water pool through the pipeline. The lithium water pool circulates through the pipeline to flush the filter conveyor belt assembly. After a certain amount of lithium water is stored in the lithium water pool, lithium is extracted through the lithium extraction device to obtain high-concentration lithium and clean water, thereby realizing the recovery of high-concentration lithium, and the clean water is transported back to the separation and transmission assembly through the pipeline for reuse.

[0023] Furthermore, the first separation tank in the separation and conveying assembly performs a secondary soaking on the negative electrode sheet material that has been soaked in the soaking tower, further improving the separation degree of the copper foil and the remaining materials in the negative electrode sheet material. The copper foil is then separated by the rotating separation element through the first conveyor belt and conveyed to the second separation tank. In the process of passing through the first conveyor belt, the first flushing component performs a first flushing on the copper foil on the first conveyor belt to reduce the graphite adhering to the copper foil. The copper foil then enters the second separation tank and is soaked again. In the process of passing through the second conveyor belt, the second flushing component performs a second flushing on the copper foil on the second conveyor belt to remove the graphite adhering to the copper foil. Finally, the clean copper foil enters the copper foil briquetting machine arranged below the second conveyor belt to be briquetized to obtain recycled copper foil blocks.

[0024] Further, the remaining material after the copper foil is separated from the first separation tank enters the first cyclone, and the low-concentration graphite-lithium water and separation water obtained after the first cyclone, the low-concentration graphite-lithium water enters the graphite buffer tank through a pipeline, and the separation water enters the graphite precipitation tank through a pipeline. After being cached in the graphite buffer tank, low-concentration graphite-lithium water is obtained again, and the low-concentration graphite-lithium water this time is passed into the second cyclone. After the second cyclone treatment, high-concentration graphite-lithium water and low-concentration graphite-lithium water are obtained. The high-concentration graphite-lithium water enters the filter conveyor through a pipeline for filtration, and the ultra-high-concentration graphite-lithium water obtained after filtration is conveyed to the graphite sedimentation tank. The ink pressing component performs pressing and squeezing, and the low-concentration graphite-lithium water obtained by filtration and the low-concentration graphite-lithium water obtained by the second cyclone are both passed into the graphite sedimentation tank for precipitation. After precipitation, the upper lithium water and the squeezed lithium water obtained in the squeezing process enter the lithium water pool through pipelines. The low-concentration graphite-lithium water after precipitation enters the graphite buffer pool through pipelines, and then enters the second cyclone circulation again. The lithium water pool circulates and flushes the filter conveyor belt assembly through pipelines. After a certain amount of lithium water is stored in the lithium water pool, lithium is extracted through a lithium extraction device to obtain high-concentration lithium and clean water, and the clean water is transported back to the separation and transmission assembly through pipelines for reuse.

[0025] Furthermore, a filtering conveyor belt is arranged below the second cyclone to filter and convey the high-concentration graphite-lithium water treated by the second cyclone, and the groove conveyor belt is arranged inside the filtering conveyor belt. The groove conveyor belt rotates synchronously with the filtering conveyor belt. The ultra-high concentration graphite-lithium water obtained by filtration is processed by a graphite briquetting component to obtain a graphite block, and a vacuum pump is arranged on the side of the groove conveyor belt to provide suction to the groove conveyor belt. The groove is arranged toward the filtering conveyor belt. The suction provided by the vacuum pump to the groove conveyor belt realizes the suction provided to the filtering conveyor belt, and the lithium water in the ultra-high concentration graphite-lithium water on the filtering conveyor belt is drawn into the groove, and then the lithium water in the groove enters the graphite precipitation tank through the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the structure of a portion of the device for separating copper foil of the negative electrode sheet material recovery device of the utility model;

[0027] Figure 2 This is a schematic diagram of the structure of part of the device for separating graphite and lithium in the negative electrode sheet material recovery device of the utility model.

[0028] [Description of Reference Numerals]

[0029] 1. Immersion tower; 2. Rotating separation element; 3. First separation tank; 4. First conveyor belt; 5. First flushing component; 6. Second separation tank; 7. Second conveyor belt; 8. Second flushing component; 9. Copper foil briquetting machine; 10. First cyclone; 11. Second cyclone; 12. Graphite buffer tank; 13. Graphite precipitation tank; 14. Overflow plate; 15. Filter conveyor belt; 16. Hydraulic pump; 17. Vacuum pump; 18. Graphite briquetting component; 19. Lithium water tank; 20. Lithium extraction device. DETAILED DESCRIPTION

[0030] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation modes in conjunction with the accompanying drawings.

[0031] The present embodiment provides a negative electrode sheet material recovery device, comprising: a soaking tower; a separation and conveying assembly, arranged below the soaking tower; a rotating separation member, arranged below the soaking tower and arranged inside the separation and conveying assembly, so as to separate the copper foil; a cyclone assembly, connected to the separation and conveying assembly, so that the graphite in the separation and conveying assembly enters the cyclone assembly; a graphite pool, arranged below the cyclone assembly and connected to the cyclone assembly; a filter conveyor belt assembly, arranged between the graphite pool and the cyclone assembly and connected to the graphite pool; a graphite block pressing component, connected to the filter conveyor belt to obtain a graphite block; a lithium water pool, arranged adjacent to the graphite pool and connected to the filter conveyor belt assembly through a pipeline to flush the filter conveyor belt assembly; a lithium extraction device, connected to both the lithium water pool and the separation and conveying assembly.

[0032] The negative electrode sheet material recovery device in the above-mentioned embodiment allows the negative electrode sheet material to be reasonably immersed in the immersion tower so that the copper foil in the negative electrode sheet material has a certain degree of separation from other materials, and then passes through the separation and conveying assembly below for a second immersion. The rotating separation element inside the separation and conveying assembly is used to limit the rotation speed, so that the copper foil in the negative electrode sheet material is separated, thereby realizing the recovery of the copper foil.

[0033] The remaining materials enter the cyclone separation component through the separation and transmission component, and are separated by cyclone in the cyclone component to obtain high-concentration graphite-lithium water and low-concentration graphite-lithium water. The high-concentration graphite-lithium water enters the filtering conveyor belt component, and is filtered to obtain ultra-high-concentration graphite-lithium water. The ultra-high-concentration graphite-lithium water is then conveyed to the graphite briquetting component for briquetting and squeezing, thereby obtaining separated graphite blocks and realizing graphite recovery.

[0034] Low-concentration graphite-lithium water enters the graphite pool for buffering and precipitation. After buffering and precipitation, lithium water is obtained and enters the lithium water pool. The squeezed lithium water obtained in the water squeezing process also enters the lithium water pool through the pipeline. The lithium water pool circulates through the pipeline to flush the filter conveyor belt assembly. After a certain amount of lithium water is stored in the lithium water pool, lithium is extracted through the lithium extraction device to obtain high-concentration lithium and clean water, thereby realizing the recovery of high-concentration lithium, and the clean water is transported back to the separation and transmission assembly through the pipeline for reuse.

[0035] In order to better understand the above technical solution, exemplary embodiments of the present invention will be described in more detail with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a clearer and more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0036] Example:

[0037] The embodiment of the utility model provides a negative electrode sheet material recovery device, such as Figure 1 As shown, it includes: an immersion tower 1; a separation and transmission component, which is arranged below the immersion tower 1; a rotating separation member 2, which is arranged below the immersion tower 1 and inside the separation and transmission component, so as to separate the copper foil; a cyclone component, which is connected to the separation and transmission component, so that the graphite in the separation and transmission component enters the cyclone component; a graphite pool, which is arranged below the cyclone component and is connected to the cyclone component; a filter conveyor belt 15 component, which is arranged between the graphite pool and the cyclone component and is connected to the graphite pool; a graphite block component 18, which is connected to the filter conveyor belt 15 to obtain a graphite block; a lithium water pool 19, which is arranged adjacent to the graphite pool and is connected to the filter conveyor belt 15 component through a pipeline to wash the filter conveyor belt 15 component; a lithium extraction device 20, which is connected to the lithium water pool 19 and the separation and transmission component.

[0038] Exemplarily, the height of the soaking tower 1 can be determined according to the actual amount of negative electrode sheet material entering, and then the height of the soaking tower 1 is determined, ultimately satisfying the soaking time of the negative electrode material and facilitating the separation of the copper foil in the negative electrode sheet material from the remaining materials.

[0039] Exemplarily, the rotation speed of the rotating separator 2 determines the magnitude of the rotation centrifugal force that can be provided to the soaked negative electrode sheet material, and by arranging a rotating motor and a transmission belt on the outside of the separation and transmission assembly, the rotating separator 2 inside the separation and transmission assembly is driven to rotate. In this embodiment, the rotation speed of the rotating separator 2 is limited to 100-500 rpm, and the rotation speed of the rotating separator 2 is controlled by adjusting the power of the rotating motor, so that the copper foil in the negative electrode separator can be separated and thrown out, and finally falls on the separation and transmission assembly, and then is transmitted to the subsequent device.

[0040] In a possible embodiment, Figure 1 As shown, the separation and conveying assembly includes: a first separation tank 3, which is arranged below the immersion tower 1; a first conveyor belt 4, which is arranged at the upper part of the first separation tank 3 and connected to the rotating separation element 2; a first flushing component 5, which is arranged on both sides of the first conveyor belt 4; a second separation tank 6, which is connected to the first conveyor belt 4 and the first flushing component 5; a second conveyor belt 7, which is arranged inside the second separation tank 6 and connected to the first conveyor belt 4; a second flushing component 8, which is arranged on both sides of the second conveyor belt 7 and connected to the second separation tank 6.

[0041] For example, since there is water in the first separation tank 3 to achieve secondary immersion of the negative electrode sheet material, the rotating separation member 2 uses a sealed bearing to ensure normal rotation. In addition, a liquid level gauge is provided on the side wall of the first separation tank 3, so that the water level in the first separation tank 3 can be adjusted according to the actual immersion amount of the negative electrode sheet material.

[0042] For example, the number of the first flushing component 5 and the second flushing component 8 can be multiple, and the setting position and flushing direction of the first flushing component 5 and the second flushing component 8 can be set according to actual needs, not limited to Figure 1 As shown in FIG, the number of the first flushing component 5 and the second flushing component 8 is set to only one, and the copper foil is only flushed from above, which is not specifically limited here.

[0043] Exemplarily, there are two first flushing components 5, which are arranged on two sides of the first conveyor belt 4. Therefore, when the copper foil is being conveyed by the first conveyor belt 4, the two first flushing components 5 flush the copper foil from both sides of the first conveyor belt 4, thereby reducing the residual material in the negative electrode sheet material adhering to the copper foil, thereby improving the recovery purity of the copper foil.

[0044] Exemplarily, there are two second flushing components 8, which are arranged on two sides of the second conveyor belt 7. Therefore, when the copper foil is being conveyed by the second conveyor belt 7, the two second flushing components 8 flush the copper foil from both sides of the second conveyor belt 7, thereby completely removing the remaining materials in the negative electrode sheet material adhering to the copper foil, thereby ensuring the recovery purity of the copper foil, and the purity of the copper foil is 95%-98%.

[0045] In a possible embodiment, Figure 1 As shown, the copper foil briquetting machine 9 is arranged below the second conveyor belt 7.

[0046] In a possible embodiment, Figure 2 As shown, the cyclone assembly includes: a first cyclone 10 connected to the first separation tank 3; and a second cyclone 11 connected to the first cyclone 10.

[0047] In a possible embodiment, Figure 2 As shown, the graphite pool includes: a graphite buffer pool 12, which is arranged below the first cyclone 10 and connected to the first cyclone 10; a graphite precipitation pool 13, which is arranged below the second cyclone 11 and connected to the second cyclone 11.

[0048] Exemplarily, the remaining material after the copper foil is separated from the first separation tank 3 enters the first cyclone 10, and the low-concentration graphite-lithium water and separation water obtained after the first cyclone, the low-concentration graphite-lithium water enters the graphite buffer tank 12 through a pipeline, and the separation water enters the graphite precipitation tank 13 through a pipeline. After being cached in the graphite buffer tank 12, low-concentration graphite-lithium water is obtained again. At this time, the low-concentration graphite-lithium water contains 40% graphite and 60% water, and the low-concentration graphite-lithium water is passed into the second cyclone 11. After the second cyclone treatment, high-concentration graphite-lithium water and low-concentration graphite-lithium water are obtained. The high-concentration graphite-lithium water enters the filter conveyor 15 through a pipeline for filtration. After filtration, ultra-high-concentration graphite-lithium water is obtained. At this time, the ultra-high-concentration graphite-lithium water contains 90% graphite and 10% water. The low-concentration graphite-lithium water is transmitted to the graphite briquetting component 18 for briquetting and squeezing. The low-concentration graphite-lithium water obtained by filtration and the low-concentration graphite-lithium water obtained by the second cyclone are both introduced into the graphite precipitation tank 13 for precipitation. After precipitation, the low-concentration graphite-lithium water contains 20% graphite and 80% water. The lithium water in the upper layer of the graphite precipitation tank 13 and the squeezed lithium water obtained in the squeezing process are both introduced into the lithium water pool 19 through the pipeline. The low-concentration graphite-lithium water after precipitation enters the graphite buffer pool 12 through the pipeline, and then enters the second cyclone 11 for circulation again. The lithium water pool 19 is used for circulating flushing of the filter conveyor belt 15 component through the pipeline. After the lithium water pool 19 stores a certain amount of lithium water, lithium extraction is performed through the lithium extraction device 20 to obtain high-concentration lithium and clean water. The clean water is transported back to the separation and transmission component through the pipeline for reuse.

[0049] In a possible embodiment, Figure 2 As shown, the overflow plate 14 is disposed between the lithium water pool 19 and the graphite precipitation pool 13 , thereby limiting the overflow height in the graphite precipitation pool 13 .

[0050] Exemplarily, a filter is provided above the overflow plate 14 , and after the low-concentration graphite-lithium water in the graphite precipitation tank 13 reaches the overflow height, it needs to pass through the filter and then enter the lithium water pool 19 , thereby ensuring that the water entering the lithium water pool 19 does not contain graphite.

[0051] In a possible embodiment, Figure 2 As shown, the filter conveyor belt 15 assembly includes: a filter conveyor belt 15, which is arranged below the second cyclone 11 to filter and convey the graphite processed by the second cyclone 11; a groove conveyor belt, which is arranged inside the filter conveyor belt 15, rotates synchronously with the filter conveyor belt 15, and is connected to the graphite precipitation tank 13; a groove, which is arranged on the groove conveyor belt, and the groove faces the filter conveyor belt 15.

[0052] Exemplarily, there are multiple grooves, and the specific number of grooves can be determined according to the width of the groove conveyor belt and the amount of water filtered by the filter conveyor belt 15.

[0053] Exemplarily, the groove may be an inverted trapezoidal structure with an opening width greater than a bottom width, thereby increasing the effective size for receiving low-concentration graphite-lithium water filtered out from the filter conveyor belt 15, thereby facilitating the reception of more low-concentration graphite-lithium water.

[0054] In a possible embodiment, Figure 2 As shown, the hydraulic pump 16 is connected to the graphite pressed part 18 , thereby providing pressure to the graphite pressed part 18 .

[0055] For example, in addition to providing pressure to the graphite pressed part 18 through the hydraulic pump 16, the belt can also be driven by a roller to provide pressure to the graphite pressed part 18 by pressing the graphite pressed part 18 with the belt, thereby ensuring the water squeezing rate in the graphite pressed part 18 and obtaining a graphite block with a higher concentration.

[0056] In a possible embodiment, Figure 2 As shown, a vacuum pump 17 is disposed on the side of the groove conveyor belt to provide suction force to the groove conveyor belt.

[0057] The present utility model also provides a process method for a negative electrode sheet material recovery device, the specific steps of which include:

[0058] S1: soaking the negative electrode sheet material in a soaking tower 1 for 8 minutes to 12 minutes to obtain the soaked negative electrode sheet material;

[0059] S2: The soaked negative electrode sheet material is rotated and separated by the rotating separation member 2 inside the separation and conveying assembly. By limiting the rotation speed, the rotation speed is 100-500 rpm, and the copper foil in the soaked negative electrode sheet material is separated and thrown to the separation and conveying assembly, and the remaining material enters the separation and conveying assembly;

[0060] S3: the remaining material enters the cyclone assembly from the separation and conveying assembly, and is separated by cyclone flow in the cyclone assembly to obtain high-concentration graphite and low-concentration graphite;

[0061] S4: high-concentration graphite enters the filter conveyor 15 component, and ultra-high-concentration graphite is obtained after filtration, and the ultra-high-concentration graphite is conveyed to the graphite block component 18 for block pressing and water squeezing, thereby obtaining graphite blocks, and low-concentration graphite enters the graphite pool for buffering and precipitation, and lithium water is obtained after buffering and precipitation;

[0062] S5: The lithium water enters the lithium water pool 19, and then circulates from the lithium water pool 19 through the pipeline to flush the filter conveyor belt 15 component. After a certain amount of lithium water is stored in the lithium water pool 19, lithium is extracted through the lithium extraction device 20 to obtain high-concentration lithium and clean water. The clean water is transported back to the separation and transmission component through the pipeline for repeated use.

[0063] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0064] In the present utility model, unless otherwise clearly specified and limited, when a first feature is “on” or “below” a second feature, it may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, when a first feature is “above”, “above” or “above” a second feature, it may be that the first feature is directly above or obliquely above the second feature, or it may simply mean that the first feature is higher in level than the second feature. When a first feature is “below”, “below” or “below” a second feature, it may be that the first feature is directly below or obliquely below the second feature, or it may simply mean that the first feature is lower in level than the second feature.

[0065] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A negative electrode sheet material recovery device, characterized in that: include: Soaking tower; A separation and transmission assembly is arranged below the soaking tower; A rotating separation member is disposed below the soaking tower and inside the separation and conveying assembly to separate the copper foil; A cyclone assembly, connected to the separation and transmission assembly; An inkstone pool is disposed below the cyclone assembly and is in communication with the cyclone assembly; A filter conveyor assembly is disposed between the inkstone pool and the cyclone assembly and is in communication with the inkstone pool; A graphite pressing block component, connected to the filtering conveyor belt; A lithium water pool is disposed adjacent to the inkstone pool and connected to the filter conveyor belt assembly via a pipeline; The lithium extraction device is connected to the lithium water pool and the separation and transmission component.

2. The negative electrode sheet material recovery device according to claim 1, characterized in that: The separation and transmission assembly comprises: A first separation tank is arranged below the immersion tower; a first conveyor belt, disposed on the upper portion of the first separation tank and connected to the rotating separation element; A first flushing component is arranged on both sides of the first conveyor belt; a second separation tank, connected to the first conveyor belt and the first flushing component; a second conveyor belt, disposed inside the second separation tank and connected to the first conveyor belt; The second flushing components are arranged on both sides of the second conveyor belt and are connected to the second separation tank.

3. The negative electrode sheet material recovery device according to claim 2, characterized in that: Also includes: The copper foil briquetting machine is arranged below the second conveyor belt.

4. The negative electrode sheet material recovery device according to claim 2, characterized in that: The cyclone assembly comprises: a first cyclone, connected to the first separation tank; The second cyclone is communicated with the first cyclone.

5. The negative electrode sheet material recovery device according to claim 4, characterized in that: The inkwell comprises: A graphite buffer pool is disposed below the first cyclone and is connected to the first cyclone and the second cyclone; The graphite precipitation tank is arranged below the second cyclone and is connected to the second cyclone and the graphite buffer tank.

6. The negative electrode sheet material recovery device according to claim 5, characterized in that: Also includes: The overflow plate is arranged between the lithium water pool and the graphite precipitation pool.

7. The negative electrode sheet material recovery device according to claim 5, characterized in that: The filter conveyor belt assembly comprises: A filtering conveyor belt, arranged below the second cyclone; A groove conveyor belt is arranged inside the filtering conveyor belt, rotates synchronously with the filtering conveyor belt, and is connected to the graphite precipitation tank; A groove is arranged on the groove conveyor belt, and the groove faces the filtering conveyor belt.

8. The negative electrode sheet material recovery device according to claim 1, characterized in that: Also includes: A hydraulic pump is connected to the graphite pressing block component.

9. The negative electrode sheet material recovery device according to claim 7, characterized in that: Also includes: A vacuum pump is arranged on the side of the groove conveyor belt.

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