A multi-stage sorting device and sorting method for lithium battery cell waste separation

Abstract

The present application relates to lithium battery cell waste sorting technical field, especially to a kind of lithium battery cell waste separation multistage sorting device and sorting method, multistage sorting device includes: multistage separation sorting mechanism, feed inlet, first barrier, multiple first discharge port, multiple second discharge port, multiple second barrier and multiple third barrier, the outlet end of feed inlet is connected with the import end of multistage separation sorting mechanism, first barrier is installed in feed inlet, the import end of first discharge port, the import end of second discharge port are all connected with the export end of multistage separation sorting mechanism, second barrier is installed in first discharge port, third barrier is installed in second discharge port.The present application is classified and handled to respectively realize the multistage separation sorting operation of non-metallic waste, metal waste, to improve lithium battery cell waste multistage separation sorting effect, to facilitate the further processing of subsequent waste.

Description

Technical Field

[0001] This invention relates to the field of lithium battery cell waste sorting technology, and in particular to a multi-stage sorting device and sorting method for separating lithium battery cell waste. Background Technology

[0002] Lithium-ion battery cell waste is an important resource in the lithium-ion battery recycling field. Its sources are wide-ranging, including but not limited to: retired power batteries, production process scraps, and discarded cells. For the purpose of: 1. Improve recycling efficiency and resource utilization: Compositional complexity: Lithium battery waste contains a variety of components (e.g., copper foil, aluminum foil, positive and negative electrode active materials (e.g., lithium cobalt oxide, lithium nickel cobalt manganese oxide, lithium iron phosphate), separator, electrolyte, and casing). These components differ in physical and chemical properties, and direct processing will lead to low recycling efficiency. Analysis function: Through sorting, different components can be effectively separated (e.g., separating metallic components (e.g., copper, aluminum, nickel, cobalt) from non-metallic components (e.g., diaphragms, shells)), thereby improving the recovery rate and purity of metals (e.g., magnetic separation in physical sorting can separate ferromagnetic materials, while airflow sorting can separate copper foil and aluminum foil based on density differences). 2. Ensure product quality and purity: Product requirements: Recycled metal components are usually used to remanufacture lithium batteries or other metal products, which require high purity. If the recycled metal contains other impurities, it will affect the performance and quality of the product. Sorting accuracy: The sorting process can precisely control the separation of different components to ensure that the purity of the recovered metal meets the reuse standards (for example, sorting before hydrometallurgy can remove most non-metallic impurities to improve the efficiency of subsequent leaching and purification). 3. Meet environmental protection requirements and reduce pollution: Hazardous waste management: Lithium battery cell waste is classified as hazardous waste. Its treatment process must strictly comply with environmental regulations. Sorting can remove harmful substances from the waste (such as organic solvents and heavy metal ions in the electrolyte) to reduce environmental pollution. Resource recycling: Through sorting, resources can be recycled, reducing the mining and consumption of new resources and thus reducing environmental pressure (for example, recycled copper and aluminum foil can be reused in lithium battery manufacturing, while positive and negative electrode active materials can be reused through recycling technology). Therefore, we urgently need a multi-stage sorting device and sorting method for separating lithium battery cell waste.

[0003] Currently, when performing multi-stage separation and sorting of lithium battery cell waste, the separation and sorting are carried out directly. However, because the lithium battery cell waste is not classified during the multi-stage separation and sorting process, non-metallic waste and metallic waste are mixed together, which affects the multi-stage separation and sorting effect of lithium battery cell waste and the further processing of the waste after separation and sorting. Summary of the Invention

[0004] The technical problem to be solved by this invention is: to address the issue that the lack of classification processing affects the multi-stage separation and sorting effect of lithium battery cell waste in existing multi-stage separation and sorting processes, this invention provides a multi-stage sorting device and method for lithium battery cell waste separation. By improving the multi-stage separation and sorting method for lithium battery cell waste, the waste is classified into metals and non-metals before multi-stage separation and sorting, thereby improving the multi-stage separation and sorting effect of lithium battery cell waste.

[0005] The technical solution adopted by this invention to solve its technical problem is: a multi-stage sorting device for separating lithium battery cell waste, comprising: a multi-stage separation and sorting mechanism, an inlet, a first baffle, multiple first outlets, multiple second outlets, multiple second baffles, and multiple third baffles. The multi-stage separation and sorting mechanism is used for multi-stage separation and sorting of lithium battery cell waste. The outlet end of the inlet is connected to the inlet end of the multi-stage separation and sorting mechanism. The first baffles are installed inside the inlet. The first outlets, second outlets, second baffles, and third baffles correspond to the stages of the multi-stage separation and sorting mechanism. The inlets of the first outlets and the second outlets are both connected to the outlet end of the multi-stage separation and sorting mechanism. The second baffles are installed inside the first outlets. The third baffles are installed inside the first outlets. Within the second discharge port; wherein: when the first baffle is in the first state, the feed port is used to adsorb metal waste and allow non-metallic waste to enter the multi-stage separation and sorting mechanism for multi-stage separation and sorting; when the first baffle is in the second state, metal waste enters the multi-stage separation and sorting mechanism for multi-stage separation and sorting; when the second baffle is in the third state and the third baffle is in the fourth state, the first discharge port is in a conducting state and the second discharge port is in a closed state, so that the non-metallic material after separation and sorting is discharged through the first discharge port; when the second baffle is in the fifth state and the third baffle is in the sixth state, the first discharge port is in a closed state and the second discharge port is in a conducting state, so that the metal material after separation and sorting is discharged through the second discharge port.

[0006] Therefore, through the cooperation of the feed inlet and the first baffle, the waste entering the multi-stage separation and sorting mechanism can be classified and processed. Compared with the existing multi-stage separation and sorting methods, this method has a simple structure and is easy to operate. Through classification and processing, multi-stage separation and sorting of non-metallic waste and metallic waste can be achieved separately, thereby improving the multi-stage separation and sorting effect of lithium battery cell waste and facilitating further processing of the waste. In addition, through the designed first discharge port, second discharge port, second baffle, and third baffle, not only can the non-metallic waste and metallic waste be discharged separately after multi-stage separation and sorting, but also the small amount of metallic waste contained in the non-metallic waste can be adsorbed during the discharge process and returned to the graded separation and sorting mechanism for multi-stage separation and sorting again. In this way, the non-metallic waste and metallic waste can be further separated to improve the accuracy of multi-stage separation and sorting of lithium battery cell waste.

[0007] As a further improvement to the above technical solution: the inlet, the first outlet, and the second outlet have the same structure.

[0008] As a further improvement to the above technical solution: a first magnetic attraction part is provided on the inner wall of the feed inlet, and a second magnetic attraction part is provided on the inner wall of the first discharge outlet; wherein: the first magnetic attraction part is used to adsorb the metal waste to be separated and sorted, and the second magnetic attraction part is used to adsorb the metal waste in the non-metallic waste that has been separated and sorted. Thus, the first magnetic attraction part can separate the non-metallic waste from the metal waste entering the multi-stage separation and sorting mechanism, thereby achieving multi-stage separation and sorting of non-metallic waste and metal waste respectively; the second magnetic attraction part can adsorb the small amount of residual metal waste in the discharged non-metallic waste onto the inner wall of the first discharge outlet for secondary separation, thus further improving the accuracy of multi-stage separation and sorting of lithium battery cell waste.

[0009] As a further improvement to the above technical solution: the first partition, the second partition, and the third partition have the same structure.

[0010] As a further improvement to the above technical solution: the first partition includes a first driving member and a partition block. The first driving member is installed inside the feed inlet, and the partition block is installed on the driving end of the first driving member. The first driving member is used to drive the partition block to move along the axial direction of the first driving member. Specifically: when the first driving member is in a first state, the feed inlet is used to adsorb metal waste and allow non-metallic waste to enter the multi-stage separation and sorting mechanism for multi-stage separation and sorting; when the first driving member is in a second state, metal waste enters the multi-stage separation and sorting mechanism for multi-stage separation and sorting. Thus, by driving the partition block to move along the axial direction of the first driving member towards one side of the inlet end of the multi-stage separation and sorting mechanism, the metal waste adsorbed on the inner wall of the feed inlet is pushed into the multi-stage separation and sorting mechanism for multi-stage separation and sorting.

[0011] As a further improvement to the above technical solution: the multi-stage separation and sorting mechanism includes: a separation and sorting chamber, a second driving component, and multiple separation and sorting screens. The second driving component is installed outside the separation and sorting chamber, and the separation and sorting screens are installed inside the separation and sorting chamber, with the screens mounted on the driving end of the second driving component. The number of separation and sorting screens is equal to the number of the first discharge port, the second discharge port, the second baffle, and the third baffle. The multiple separation and sorting screens are arranged sequentially at equal intervals. The second driving component drives the multiple separation and sorting screens to rotate simultaneously, thereby achieving multi-stage separation and sorting of lithium battery cell waste. Therefore, the second drive unit is activated, which drives the separation and sorting screen to rotate. On the one hand, the centrifugal force generated by the rotation of the separation and sorting screen throws the waste to be separated into the first and second discharge ports, so as to facilitate the discharge of the waste after separation and sorting. On the other hand, the centrifugal force drives the waste to move, so as to avoid the waste from accumulating and being difficult to separate and sort, thereby improving the effect and efficiency of waste separation and sorting. In addition, the simultaneous rotation of multiple separation and sorting screens can further improve the effect of waste separation and sorting.

[0012] As a further improvement to the above technical solution: the multi-stage separation and sorting mechanism further includes: a rotating rod, a plurality of first gears and a plurality of second gears, the rotating rod passing through the separation and sorting chamber and being rotatably connected to the separation and sorting chamber, the rotating rod being connected to the driving end of the second driving member, and the separation and sorting screen being connected to the rotating rod through the first gears and the second gears.

[0013] As a further improvement to the above technical solution: the separation and sorting apertures of the multiple separation and sorting screens gradually decrease from the side closer to the second driving member to the side farther away from the second driving member along the axial direction of the rotating rod. Thus, multi-stage separation and sorting of lithium battery cell waste is achieved through multiple separation and sorting screens with gradually decreasing apertures.

[0014] As a further improvement to the above technical solution: the separation and sorting screen includes a screen, a first mounting part, and a second mounting part. Both the first and second mounting parts are connected to the screen. The first mounting part is connected to the rotating rod via a first gear and a second gear. The side of the second mounting part away from the screen is inserted into the separation and sorting chamber and rotatably connected to it. Therefore, by inserting the second mounting part into the separation and sorting chamber and rotatably connecting it, it is ensured that the separation and sorting screen and the separation and sorting chamber are tightly fitted together, and there are no channels outside the separation and sorting holes between the various separation and sorting accommodating spaces. This avoids cross-contamination of materials, thus preventing the multi-stage separation and sorting effect of lithium battery cell waste from being affected.

[0015] A sorting method for a multi-stage sorting device for separating lithium battery cell waste includes the following steps: S1. The first partition is in the first state. The lithium battery waste to be separated and sorted in multiple stages is fed into the multi-stage separation and sorting mechanism through the feed inlet. Metal waste is adsorbed on the inner wall of the feed inlet, and non-metal waste enters the multi-stage separation and sorting mechanism. S2, the second partition is in the third state, the third partition is in the fourth state, and the multi-stage separation and sorting mechanism is activated to realize the multi-stage separation and sorting operation of non-metallic waste, and to make the non-metallic waste after the multi-stage separation and sorting operation discharged through the first discharge port, while the metallic waste is adsorbed on the inner wall of the first discharge port. S3. The first partition is in the second state, the second partition is in the fifth state, and the third partition is in the sixth state, so that the metal waste adsorbed on the inner wall of the feed inlet and the inner wall of the first discharge outlet enters the multi-stage separation and sorting mechanism, and the multi-stage separation and sorting mechanism is started to realize the multi-stage separation and sorting operation of the metal waste, and the metal waste after the multi-stage separation and sorting operation is discharged through the second discharge outlet.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention, through the cooperation of the feed inlet and the first baffle, can classify and process waste entering the multi-stage separation and sorting mechanism. Compared with existing multi-stage separation and sorting methods, this method has a simple structure and is easy to operate. Through classification, it can achieve multi-stage separation and sorting of non-metallic waste and metallic waste respectively, thereby improving the multi-stage separation and sorting effect of lithium battery cell waste and facilitating further processing of the waste. In addition, through the designed first discharge port, second discharge port, second baffle, and third baffle, not only can the non-metallic waste and metallic waste be discharged separately after multi-stage separation and sorting, but also the small amount of metallic waste contained in the non-metallic waste can be adsorbed during the discharge process and returned to the graded separation and sorting mechanism for multi-stage separation and sorting again. In this way, the non-metallic waste and metallic waste are further separated, thereby improving the accuracy of multi-stage separation and sorting of lithium battery cell waste.

[0017] 2. The present invention can separate non-metallic waste from metallic waste by means of the first magnetic attraction part, so as to realize multi-stage separation and sorting of non-metallic waste and metallic waste respectively; by means of the second magnetic attraction part, a small amount of metallic waste remaining in the discharged non-metallic waste can be adsorbed on the inner wall of the first discharge port for secondary separation, thereby further improving the accuracy of multi-stage separation and sorting of lithium battery cell waste.

[0018] 3. The present invention drives the separation and sorting screen to rotate through the second driving component. On the one hand, the centrifugal force generated by the rotation of the separation and sorting screen throws the waste to be separated into the first discharge port and the second discharge port to facilitate the discharge of the waste after separation and sorting. On the other hand, the centrifugal force drives the waste to move to avoid the waste from accumulating and being difficult to separate and sort, thereby improving the effect and efficiency of waste separation and sorting. In addition, the simultaneous rotation of multiple separation and sorting screens can further improve the effect of waste separation and sorting.

[0019] 4. The present invention, by inserting the second mounting part into the separation and sorting chamber and rotating it with the separation and sorting chamber, can ensure that the separation and sorting screen and the separation and sorting chamber are tightly fitted together, and there are no channels outside the separation and sorting holes between the various separation and sorting accommodating spaces. In this way, the multi-stage separation and sorting effect of lithium battery cell waste can be avoided due to material cross-contamination. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Figure 1 This is a schematic diagram of the multi-stage sorting device for separating lithium battery cell waste according to the present invention; Figure 2This is a cross-sectional structural schematic diagram of the multi-stage sorting device for separating lithium battery cell waste according to the present invention; Figure 3 For the present invention Figure 2 Enlarged schematic diagram of a local structure at point A; Figure 4 For the present invention Figure 2 Enlarged schematic diagram of the local structure at point B; Figure 5 For the present invention Figure 2 Enlarged schematic diagram of the local structure at point C; Figure 6 A schematic diagram of part of the multi-stage separation and sorting mechanism of the invention; Figure 7 This is a schematic diagram of the installation of the separation and sorting screen and the rotating rod according to the present invention; Figure 8 For the present invention Figure 7 Enlarged schematic diagram of the local structure at point D; Figure 9 This is a flowchart of the sorting method of the multi-stage sorting device for separating lithium battery cell waste according to the present invention.

[0022] In the diagram: 1. Multi-stage separation and sorting mechanism; 101. Separation and sorting chamber; 102. Second drive component; 103. Separation and sorting screen; 1031. Screen mesh; 1032. First mounting part; 1033. Second mounting part; 104. Rotating rod; 105. First gear; 106. Second gear; 2. Feed inlet; 3. First partition section; 301. First driving component; 302. Partition block; 4. First discharge port; 5. Second discharge port; 6. Second partition section; 7. Third partition section; 8. First magnetic attraction part; 9. Second magnetic attraction part. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0024] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0025] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0026] like Figures 1 to 8As shown, a multi-stage sorting device for separating lithium battery cell waste includes: a multi-stage separation and sorting mechanism 1, an inlet 2, a first baffle 3, multiple first outlets 4, multiple second outlets 5, multiple second baffles 6, and multiple third baffles 7. The multi-stage separation and sorting mechanism 1 is used for multi-stage separation and sorting of lithium battery cell waste. The outlet end of the inlet 2 is connected to the inlet end of the multi-stage separation and sorting mechanism 1. The first baffles 3 are installed inside the inlet 2. The first outlets 4, second outlets 5, second baffles 6, and third baffles 7 correspond to the stages of the multi-stage separation and sorting mechanism 1. The inlets of the first outlets 4 and second outlets 5 are both connected to the outlet ends of the multi-stage separation and sorting mechanism 1. The second baffles 6 are installed inside the first outlets 4, and the third baffles 7 are installed inside the second outlets 5. The feed inlet 2 is used to adsorb metal waste and allow non-metallic waste to enter the multi-stage separation and sorting mechanism 1 for multi-stage separation and sorting when the first partition 3 is in the second state; when the second partition 6 is in the third state and the third partition 7 is in the fourth state, the first discharge port 4 is in the open state and the second discharge port 5 is in the closed state, so that the non-metallic material after separation and sorting is discharged through the first discharge port 4; when the second partition 6 is in the fifth state and the third partition 7 is in the sixth state, the first discharge port 4 is in the closed state and the second discharge port 5 is in the open state, so that the metal material after separation and sorting is discharged through the second discharge port 5. Therefore, through the cooperation of the feed inlet 2 and the first baffle 3, the waste entering the multi-stage separation and sorting mechanism 1 can be classified and processed. Compared with the existing multi-stage separation and sorting methods, this method has a simple structure and is easy to operate. Through classification and processing, multi-stage separation and sorting of non-metallic waste and metallic waste can be achieved separately, thereby improving the multi-stage separation and sorting effect of lithium battery cell waste and facilitating further processing of the waste. In addition, through the designed first discharge port 4, second discharge port 5, second baffle 6 and third baffle 7, not only can the non-metallic waste and metallic waste be discharged separately after multi-stage separation and sorting, but also the small amount of metallic waste contained in the non-metallic waste can be adsorbed during the discharge of non-metallic waste and returned to the graded separation and sorting mechanism for multi-stage separation and sorting again. In this way, the non-metallic waste and metallic waste can be further separated to improve the accuracy of multi-stage separation and sorting of lithium battery cell waste.

[0027] It should be noted that: the first state refers to the first partition 3 being located on the side away from the inlet end of the multi-stage separation and sorting mechanism 1; the second state refers to the state in which the first partition 3 is in contact with the inner wall of the multi-stage separation and sorting mechanism 1; the third state refers to the state in which the second partition 6 is located on the side away from the outlet end of the multi-stage separation and sorting mechanism 1; the fourth state refers to the state in which the third partition 7 is in contact with the inner wall of the multi-stage separation and sorting mechanism 1; the fifth state refers to the state in which the second partition 6 is in contact with the inner wall of the multi-stage separation and sorting mechanism 1; and the sixth state refers to the state in which the third partition 7 is located on the side away from the outlet end of the multi-stage separation and sorting mechanism 1.

[0028] In this embodiment, the inlet 2, the first outlet 4, and the second outlet 5 have the same structure; a first magnetic attraction part 8 is provided on the inner wall of the inlet 2, and a second magnetic attraction part 9 is provided on the inner wall of the first outlet 4; wherein, the first magnetic attraction part 8 is used to adsorb the metal waste to be separated and sorted, and the second magnetic attraction part 9 is used to adsorb the metal waste in the non-metallic waste after separation and sorting. Thus, the first magnetic attraction part 8 can separate the non-metallic waste from the metal waste entering the multi-stage separation and sorting mechanism 1, so as to realize the multi-stage separation and sorting of non-metallic waste and metal waste respectively; the second magnetic attraction part 9 can adsorb the small amount of metal waste remaining in the discharged non-metallic waste onto the inner wall of the first outlet 4 for secondary separation, thereby further improving the accuracy of multi-stage separation and sorting of lithium battery cell waste.

[0029] For example, the first magnetic attraction part 8 uses a magnet, and the second magnetic attraction part 9 uses a magnet.

[0030] In this embodiment, the first partition 3, the second partition 6, and the third partition 7 have the same structure. The first partition 3 includes a first driving member 301 and a partition block 302. The first driving member 301 is installed in the feed inlet 2, and the partition block 302 is installed on the driving end of the first driving member 301. The first driving member 301 is used to drive the partition block 302 to move along the axial direction of the first driving member 301. When the first driving member 301 is in the first state, the feed inlet 2 is used to adsorb metal waste and enter the multi-stage separation and sorting mechanism 1 for multi-stage separation and sorting. When the first driving member 301 is in the second state, the metal waste enters the multi-stage separation and sorting mechanism 1 for multi-stage separation and sorting. Therefore, the first driving member 301 drives the baffle block 302 to move along the axial direction of the first driving member 301 towards one side of the inlet end of the multi-stage separation and sorting mechanism 1, so as to push the metal waste adsorbed on the inner wall of the feed inlet 2 into the multi-stage separation and sorting mechanism 1 for multi-stage separation and sorting operations.

[0031] Specifically, the side of the baffle block 302 away from the driving end of the first driving member 301 coincides with the inner wall of the separation and sorting chamber 101. Thus, when the first baffle part 3 is in the second state, the metal waste that can be adsorbed on the inner wall of the feed inlet 2 flows completely into the interior of the multi-stage separation and sorting mechanism 1 without any adsorption residue.

[0032] For example, the first driving component 301 is a cylinder.

[0033] In this embodiment, the multi-stage separation and sorting mechanism 1 includes: a separation and sorting chamber 101, a second driving member 102, a plurality of separation and sorting screens 103, a rotating rod 104, a plurality of first gears 105, and a plurality of second gears 106. The second driving member 102 is installed outside the separation and sorting chamber 101, the separation and sorting screens 103 are installed inside the separation and sorting chamber 101, the rotating rod 104 penetrates through the separation and sorting chamber 101 and is rotatably connected to the separation and sorting chamber 101. The rotating rod 104 is connected to the driving end of the second driving member 102. The separation and sorting screens 103 are connected to the rotating rod 104 through the first gears 105 and the second gears 106. The separation and sorting apertures of the plurality of separation and sorting screens 103 gradually decrease along the axial direction of the rotating rod 104 from the side close to the second driving member 102 to the side far from the second driving member 102. The separation and sorting screen 103 includes: a screen mesh 1031, a first mounting portion 1032, and a second mounting portion 1033. Both the first mounting portion 1032 and the second mounting portion 1033 are connected to the screen mesh 1031. The first mounting portion 1032 is connected to the rotating rod 104 through the first gears 105 and the second gears 106. The side of the second mounting portion 1033 away from the screen mesh 1031 is inserted into the separation and sorting chamber 101 and is rotatably connected to the separation and sorting chamber 101. Among them: the number of the separation and sorting screens 103 is equal to the number of the first discharge port 4, the second discharge port 5, the second partition portion 6, and the third partition portion 7; the plurality of separation and sorting screens 103 are arranged at equal intervals in sequence. The second driving member 102 is used to drive the plurality of separation and sorting screens 103 to rotate simultaneously to realize the multi-stage separation and sorting operation of the waste lithium battery cells. Thus, when the second driving member 102 is started, the separation and sorting screens 103 are driven to rotate by the second driving member 102. On the one hand, the centrifugal force generated by the rotation of the separation and sorting screens 103 is used to throw the waste to be separated and sorted into the first discharge port 4 and the second discharge port 5, so as to facilitate the discharge of the waste after separation and sorting. On the other hand, the waste is driven to move by the centrifugal force to avoid the difficulty of separation and sorting due to the accumulation of waste, so as to improve the effect and efficiency of waste separation and sorting; in addition, the simultaneous rotation of the plurality of separation and sorting screens 103 can further improve the effect of waste separation and sorting; the multi-stage separation and sorting of the waste lithium battery cells is realized through the plurality of separation and sorting screens 103 with gradually decreasing separation and sorting apertures; through the connection mode that the second mounting portion 1033 is inserted into the separation and sorting chamber 101 and is rotatably connected to the separation and sorting chamber 101, it can ensure that the separation and sorting screen 103 is closely fitted with the separation and sorting chamber 101, and there is no channel other than the separation and sorting holes between the respective separation and sorting accommodation spaces. In this way, it can avoid the influence on the multi-stage separation and sorting effect of the waste lithium battery cells due to the mixing of materials between each other.

[0034] Specifically, as Figure 7 、 8As shown, the first gear 105 is sleeved on the rotating rod 104, and the second gear 106 meshes with the first gear 105. The first mounting part 1032 is connected to the second gear 106. Thus, when the second driving member 102 is activated, the rotating rod 104 is driven to rotate by the second driving member 102, so that the first gear 105 rotates. By utilizing the meshing connection between the first gear 105 and the second gear 106, the rotation of the separation and sorting screen 103 can be realized.

[0035] It should be noted that: except for the last stage, all of the multiple separation and sorting screens 103 are provided with separation and sorting holes. The last stage separation and sorting screen 103 is a plate structure. The last stage does not need to be graded again and can be discharged directly.

[0036] For example, the second drive component 102 is a motor.

[0037] It should be noted that pumps (not shown in the figure) are connected in series on the inlet 2, the first outlet 4, and the second outlet 5. The pumps are used to transport the waste material. The pumps are existing technology and will not be described in detail here.

[0038] like Figure 9 As shown, a sorting method for a multi-stage sorting device for separating lithium battery cell waste includes the following steps: S1. The first partition 3 is in the first state. The lithium battery waste to be separated and sorted in multiple stages is fed into the multi-stage separation and sorting mechanism 1 through the feed inlet 2. The metal waste is adsorbed on the inner wall of the feed inlet 2, and the non-metal waste enters the multi-stage separation and sorting mechanism 1. S2, the second partition 6 is in the third state, the third partition 7 is in the fourth state, and the multi-stage separation and sorting mechanism 1 is activated to realize the multi-stage separation and sorting operation of non-metallic waste, and to make the non-metallic waste after the multi-stage separation and sorting operation discharged through the first discharge port 4, while the metallic waste is adsorbed on the inner wall of the first discharge port 4. S3, the first partition 3 is in the second state, the second partition 6 is in the fifth state, and the third partition 7 is in the sixth state, so that the metal waste adsorbed on the inner wall of the feed inlet 2 and the inner wall of the first discharge outlet 4 enters the multi-stage separation and sorting mechanism 1, and the multi-stage separation and sorting mechanism 1 is started to realize the multi-stage separation and sorting operation of the metal waste, and the metal waste after the multi-stage separation and sorting operation is discharged through the second discharge outlet 5.

[0039] It should be noted that during the separation and sorting process, the point at which non-metallic waste multi-stage sorting and metal waste multi-stage sorting operations are separated is determined by observing whether waste is discharged from the first discharge port 4. That is, if waste is continuously discharged from the first discharge port 4, it indicates that the multi-stage sorting stage of non-metallic waste is still in progress. If no waste is discharged from the first discharge port 4, the entire multi-stage sorting device is switched to the multi-stage sorting stage of metal waste.

[0040] In summary, this invention, through the cooperation of the feed inlet 2 and the first baffle 3, can classify and process the waste entering the multi-stage separation and sorting mechanism 1. Compared with existing multi-stage separation and sorting methods, this method has a simple structure and is easy to operate. Through classification, it can achieve multi-stage separation and sorting of non-metallic waste and metallic waste respectively, thereby improving the multi-stage separation and sorting effect of lithium battery cell waste and facilitating further processing of the waste. In addition, through the designed first discharge port 4, second discharge port 5, second baffle 6, and third baffle 7, not only can the non-metallic waste and metallic waste be discharged separately after multi-stage separation and sorting, but also the small amount of metallic waste contained in the non-metallic waste can be adsorbed during the discharge process of the non-metallic waste and returned to the graded separation and sorting mechanism for multi-stage separation and sorting again. In this way, the non-metallic waste and metallic waste are further separated, thereby improving the accuracy of multi-stage separation and sorting of lithium battery cell waste.

[0041] The above description is based on the preferred embodiments of the present invention. Through the above description, those skilled in the art can make various changes and modifications without departing from the technical concept of the present invention. The technical scope of the present invention is not limited to the contents of the specification, but must be determined by the scope of the claims.

Claims

1. A multi-stage sorting device for separating waste lithium battery cells, characterized in that, include: A multi-stage separation and sorting mechanism (1) is used for multi-stage separation and sorting of lithium battery cell waste. The feed inlet (2) and the first partition (3) are connected, with the outlet end of the feed inlet (2) connected to the inlet end of the multi-stage separation and sorting mechanism (1), and the first partition (3) is installed inside the feed inlet (2). Multiple first discharge ports (4), multiple second discharge ports (5), multiple second partitions (6), and multiple third partitions (7) are provided. The first discharge ports (4), the second discharge ports (5), the second partitions (6), and the third partitions (7) correspond to the stages of the multi-stage separation and sorting mechanism (1). The inlet end of the first discharge port (4) and the inlet end of the second discharge port (5) are connected to the outlet end of the multi-stage separation and sorting mechanism (1). The second partitions (6) are installed in the first discharge port (4), and the third partitions (7) are installed in the second discharge port (5). Wherein: when the first partition (3) is in the first state, the feed port (2) is used to adsorb metal waste and to put non-metal waste into the multi-stage separation and sorting mechanism (1) for multi-stage separation and sorting; When the first partition (3) is in the second state, the metal waste enters the multi-stage separation and sorting mechanism (1) for multi-stage separation and sorting; When the second partition (6) is in the third state and the third partition (7) is in the fourth state, the first discharge port (4) is in the open state and the second discharge port (5) is in the closed state, so that the non-metallic material after separation and sorting is discharged through the first discharge port (4). When the second partition (6) is in the fifth state and the third partition (7) is in the sixth state, the first discharge port (4) is in the closed state and the second discharge port (5) is in the open state, so that the metal material after separation and sorting is discharged through the second discharge port (5).

2. The multi-stage sorting device for separating lithium battery cell waste according to claim 1, characterized in that, The inlet (2), the first outlet (4), and the second outlet (5) have the same structure.

3. The multi-stage sorting device for separating lithium battery cell waste according to claim 1, characterized in that, The inner wall of the feed inlet (2) is provided with a first magnetic suction part (8), and the inner wall of the first discharge outlet (4) is provided with a second magnetic suction part (9). Wherein: the first magnetic suction part (8) is used to adsorb the metal waste to be separated and sorted, and the second magnetic suction part (9) is used to adsorb the metal waste in the non-metallic waste after separation and sorting.

4. The multi-stage sorting device for separating lithium battery cell waste according to claim 1, characterized in that, The first partition (3), the second partition (6), and the third partition (7) have the same structure.

5. A multi-stage sorting device for separating lithium battery cell waste according to claim 1, characterized in that, The first partition (3) includes: A first driving member (301) and a partition block (302) are provided. The first driving member (301) is installed inside the feed inlet (2), and the partition block (302) is installed on the driving end of the first driving member (301). The first driving member (301) is used to drive the partition block (302) to move along the axial direction of the first driving member (301). Wherein: when the first driving member (301) is in the first state, the feed port (2) is used to adsorb metal waste and to put non-metal waste into the multi-stage separation and sorting mechanism (1) for multi-stage separation and sorting; When the first drive unit (301) is in the second state, the metal waste enters the multi-stage separation and sorting mechanism (1) for multi-stage separation and sorting.

6. The multi-stage sorting device for separating lithium battery cell waste according to claim 1, characterized in that, The multi-stage separation and sorting mechanism (1) includes: The separation and sorting chamber (101), the second drive unit (102), and a plurality of separation and sorting screens (103) are provided. The second drive unit (102) is installed outside the separation and sorting chamber (101), and the separation and sorting screens (103) are installed inside the separation and sorting chamber (101). The separation and sorting screens (103) are installed on the drive end of the second drive unit (102). Wherein: the number of the separation and sorting screens (103) is equal to the number of the first discharge port (4), the second discharge port (5), the second partition (6) and the third partition (7); Multiple separation and sorting screens (103) are arranged in sequence with equal spacing. The second driving member (102) is used to drive multiple separation and sorting screens (103) to rotate simultaneously, so as to realize multi-stage separation and sorting of lithium battery cell waste.

7. A multi-stage sorting device for separating lithium battery cell waste according to claim 6, characterized in that, The multi-stage separation and sorting mechanism (1) also includes: The rotating rod (104), a plurality of first gears (105) and a plurality of second gears (106) are provided. The rotating rod (104) passes through the separation and sorting chamber (101) and is rotatably connected to the separation and sorting chamber (101). The rotating rod (104) is connected to the driving end of the second driving member (102). The separation and sorting screen (103) is connected to the rotating rod (104) through the first gears (105) and the second gears (106).

8. A multi-stage sorting device for separating lithium battery cell waste according to claim 7, characterized in that, The separation and sorting sieves (103) of the plurality of said separation and sorting sieves (103) gradually decrease in size from the side closer to the second drive member (102) to the side farther away from the second drive member (102) along the axial direction of the rotating rod (104).

9. A multi-stage sorting device for separating lithium battery cell waste according to claim 7, characterized in that, The separation and sorting sieve (103) includes: The screen (1031), the first mounting part (1032), and the second mounting part (1033) are connected to the screen (1031). The first mounting part (1032) is connected to the rotating rod (104) through the first gear (105) and the second gear (106). The side of the second mounting part (1033) away from the screen (1031) is inserted into the separation and sorting chamber (101) and is rotatably connected to the separation and sorting chamber (101).

10. A sorting method for a multi-stage sorting device for separating lithium battery cell waste according to any one of claims 1-9, characterized in that, Includes the following steps: S1. The first partition (3) is in the first state. The lithium battery waste to be separated and sorted by multiple stages is fed into the multi-stage separation and sorting mechanism (1) through the feed inlet (2). The metal waste is adsorbed on the inner wall of the feed inlet (2), and the non-metal waste enters the multi-stage separation and sorting mechanism (1). S2, the second partition (6) is in the third state, the third partition (7) is in the fourth state, and the multi-stage separation and sorting mechanism (1) is activated to realize the multi-stage separation and sorting operation of non-metallic waste, and to make the non-metallic waste after the multi-stage separation and sorting operation discharged through the first discharge port (4), and the metal waste adsorbed on the inner wall of the first discharge port (4); S3, the first partition (3) is in the second state, the second partition (6) is in the fifth state, and the third partition (7) is in the sixth state, so that the metal waste adsorbed on the inner wall of the feed inlet (2) and the inner wall of the first discharge outlet (4) enters the multi-stage separation and sorting mechanism (1), and the multi-stage separation and sorting mechanism (1) is started to realize the multi-stage separation and sorting operation of the metal waste, and the metal waste after the multi-stage separation and sorting operation is discharged through the second discharge outlet (5).

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