Lithium battery pole piece recovery equipment

Abstract

The utility model discloses recycling equipment for lithium battery pole pieces. The recycling equipment comprises a ball milling device and a drum screen device. The ball-milling device comprises a ball-milling assembly, the ball-milling assembly comprises a rolling ball-milling cylinder and a plurality of ball-milling parts, dustproof water is injected into the ball-milling cylinder, the plurality of ball-milling parts are movably arranged in the ball-milling cylinder, each ball-milling part is submerged in the dustproof water, and the ball-milling cylinder is provided with a first discharge port; the drum screen device comprises a drum screen assembly, the drum screen assembly comprises a drum screen arranged in a rolling mode, the drum screen is provided with a first feeding port and a second discharging port, the first feeding port and the second discharging port both communicate with the interior of the drum screen, and the first feeding port communicates with the first discharging port; and the second discharge port and screen meshes of the drum screen are communicated with the outside. The recycling equipment for the lithium battery pole piece can reduce overflow of dust.

Description

Technical Field

[0001] The present application relates to the technical field of recycling lithium battery pole pieces, and in particular to a recycling device for lithium battery pole pieces. Background Art

[0002] Lithium battery pole pieces contain a large amount of current collectors and battery black powder. Current collectors refer to structures or parts that collect current, such as copper foil, aluminum foil and other materials. Battery black powder mainly includes heavy metals such as lithium, nickel, cobalt, manganese and organic electrolytes. If improperly handled, it will cause serious damage to the ecological environment and human health, and will also cause huge waste of resources. Therefore, the current collectors and battery black powder in the lithium battery pole pieces need to be screened and stored separately for recycling. In traditional lithium battery pole piece recycling equipment, a large amount of dust is usually generated when screening the current collectors and battery black powder, which not only pollutes the environment, but also affects the health of the operators. Utility Model Content

[0003] In view of this, the purpose of this application is to overcome the deficiencies in the prior art and provide a lithium battery pole piece recycling device that can reduce dust overflow.

[0004] To achieve the above objectives, the technical solutions adopted in this application are as follows:

[0005] According to the lithium battery pole piece recycling equipment of the embodiment of the present application, it includes: a ball milling device, the ball milling device includes a ball milling assembly, the ball milling assembly includes a rolling ball milling cylinder and a plurality of ball milling parts, the ball milling cylinder is injected with dust-proof water, the plurality of ball milling parts can be movably arranged in the ball milling cylinder, and each of the ball milling parts is submerged in the dust-proof water, and the ball milling cylinder is provided with a first discharge port; a drum screen device, the drum screen device includes a drum screen assembly, the drum screen assembly includes a rolling drum screen, the drum screen is provided with a first feed port and a second discharge port, the first feed port and the second discharge port are both connected to the interior of the drum screen, and the first feed port is connected to the first discharge port, and the second discharge port and the screen holes of the drum screen are both connected to the outside.

[0006] The lithium battery pole piece recycling equipment of the present application has the following advantages:

[0007] In the above-mentioned lithium battery pole piece recycling equipment, the lithium battery pole piece fragments can be placed in the ball mill for grinding. Since the ball mill is arranged to roll and multiple ball mills can be movably arranged in the ball mill, when the ball mill rotates, the lithium battery pole piece can be rolled in the ball mill between the multiple ball mills to realize the grinding of the lithium battery pole piece and preliminarily break up and separate the battery black powder and the current collector. At the same time, since the first feed port of the drum screen is connected to the first discharge port of the ball mill, the powdered lithium battery pole piece can be passed from the ball mill through the first discharge port and the first feed port into the drum screen in sequence, so that the powdered lithium battery pole piece can be fed into the drum screen through the drum screen. Screening is performed to discharge the battery black powder with smaller particle size through the sieve mesh holes, and the current collector with larger particle size is discharged through the second discharge port, thereby realizing the recovery of different materials of the lithium battery pole pieces. In this process, since dust-proof water is injected into the ball mill and each ball mill is submerged in the dust-proof water, when multiple ball mills grind the lithium battery pole pieces, the lithium battery pole pieces can be kept in a wet state to avoid excessive dust generated during the grinding process and causing dust overflow. Similarly, when the powdered lithium battery pole pieces are in the drum screen, it can also avoid excessive dust generated during the screening process and causing dust overflow. In this way, the above-mentioned lithium battery pole piece recovery equipment can reduce dust overflow.

[0008] According to the lithium battery pole piece recycling equipment of the embodiment of the present application, the volume ratio of the lithium battery pole pieces in the ball mill to the dust-proof water is V, which satisfies: 1:3≤V≤1:10.

[0009] According to the lithium battery pole piece recycling equipment of the embodiment of the present application, the diameters of any two of the ball mills are equal or unequal, and the diameter of any one of the ball mills is D1, satisfying: 10mm≤D1≤60mm.

[0010] According to the lithium battery pole piece recycling equipment of the embodiment of the present application, the aperture of the sieve hole is D2, which satisfies: 38μm≤D2≤850μm.

[0011] According to the lithium battery pole piece recycling equipment of the embodiment of the present application, the drum screen assembly also includes an outer shell, the drum screen is arranged in the outer shell, and the first feed port and the second discharge port are exposed outside the outer shell, the screen holes are located inside the outer shell, and the outer shell is provided with a third discharge port, and the third discharge port is connected to the interior of the outer shell and the screen holes.

[0012] According to the lithium battery pole piece recycling equipment of the embodiment of the present application, the drum screen device also includes a spray assembly, and the spray assembly includes a plurality of spray parts, each of which is arranged in the outer shell, and the spray water sprayed by the plurality of spray parts at least partially falls onto the drum screen.

[0013] According to the lithium battery pole piece recycling equipment of the embodiment of the present application, in the radial direction of the drum screen, the water level line in the shell is lower than the first feed port and the second discharge port near the end of the bottom of the shell.

[0014] According to the lithium battery pole piece recycling equipment of the embodiment of the present application, the third discharge port is arranged at the bottom of the outer shell. In the radial direction of the drum screen, the distance between the water level line in the outer shell and the third discharge port is L1, and the distance between the bottom of the drum screen and the third discharge port is L2, satisfying: -5cm≤L1-L2≤5cm.

[0015] According to the lithium battery pole piece recycling equipment of the embodiment of the present application, the drum screen device also includes a water level control component, and the water level control component includes a first water pump. The first water pump is arranged at the third discharge port. When L1-L2 is less than -5cm, the first water pump is turned off, and when L1-L2 is greater than 5cm, the first water pump is turned on.

[0016] According to the lithium battery pole piece recycling equipment of the embodiment of the present application, the water level control component also includes a water storage bin, and the outer shell is also provided with an overflow port connected to the interior of the outer shell, the overflow port is spaced apart from the second discharge port and the first feed port, and the overflow port is arranged between the second discharge port and the third discharge port, and the overflow port is connected to the water storage bin. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 A schematic diagram of the structure of the lithium battery pole piece recycling equipment in this application is shown;

[0019] Figure 2 Shows a schematic structural diagram of the ball milling device in this application;

[0020] Figure 3 Shows a schematic structural diagram of the ball mill assembly in this application;

[0021] Figure 4 Shows a schematic structural diagram of the drum screen device in this application;

[0022] Figure 5 A schematic structural diagram of the drum screen assembly in this application is shown.

[0023] Description of main component symbols:

[0024] 100-ball milling device; 110-ball milling assembly; 111-ball milling cylinder; 1111-first discharge port; 1112-first driven wheel; 1113-second feed port; 112-ball milling element; 120-first drive assembly; 121-first drive element; 122-first driving wheel;

[0025] 200 - drum screen device; 210 - drum screen assembly; 211 - drum screen; 2111 - first feed port; 2112 - second discharge port; 2113 - mesh holes; 2114 - second driven wheel; 212 - housing; 2121 - third discharge port; 2122 - overflow port; 220 - spray assembly; 221 - spray element; 222 - second water pump; 223 - second connecting pipe; 230 - water level control assembly; 231 - first water pump; 232 - water storage tank; 240 - second drive assembly; 241 - second drive element; 242 - second driving wheel;

[0026] 300-first connecting pipe;

[0027] 400- conveying device; 410- third driving member; 420- conveying member;

[0028] 500 - filter press device; 510 - filter press element; 520 - third connecting pipe. DETAILED DESCRIPTION

[0029] The following describes in detail embodiments of the present application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0030] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0032] In this application, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components or interactions between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on specific circumstances.

[0033] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0034] Reference Figures 1 to 5 As shown, the lithium battery pole piece recycling equipment involved in the embodiment of the present application includes: a ball mill device 100 and a drum screen device 200.

[0035] Specifically, the ball mill device 100 includes a ball mill assembly 110, which includes a rolling ball mill 111 and multiple ball mill parts 112. Dust-proof water is injected into the ball mill 111. Multiple ball mill parts 112 can be movably arranged in the ball mill 111, and each ball mill part 112 is submerged in the dust-proof water. The ball mill 111 is provided with a first discharge port 1111; the drum screen device 200 includes a drum screen assembly 210, which includes a rolling drum screen 211. The drum screen 211 is provided with a first feed port 2111 and a second discharge port 2112. The first feed port 2111 and the second discharge port 2112 are both connected to the interior of the drum screen 211, and the first feed port 2111 is connected to the first discharge port 1111. The second discharge port 2112 and the screen holes 2113 of the drum screen 211 are both connected to the outside.

[0036] In the above-mentioned lithium battery pole piece recycling equipment, the lithium battery pole piece fragments can be placed in the ball mill 111 for grinding. Since the ball mill 111 is arranged to roll and the multiple ball mills 112 can be movably arranged in the ball mill 111, when the ball mill 111 rotates, the lithium battery pole piece can be rolled in the ball mill 111 between the multiple ball mills 112, so as to realize the grinding of the lithium battery pole piece and preliminarily break up and separate the battery black powder and the current collector. At the same time, since the first feed port 2111 of the drum screen 211 is connected to the first discharge port 1111 of the ball mill 111, the powdered lithium battery pole piece can be passed from the ball mill 111 to the first discharge port 1111 and the first feed port 2111 into the drum screen 211 in sequence, so as to facilitate the powdering. The powdered lithium battery pole pieces can be screened through the drum screen 211, so that the battery black powder with smaller particle size is discharged through the screen mesh 2113, and the collector with larger particle size is discharged through the second discharge port 2112, thereby realizing the recycling of different materials of the lithium battery pole pieces. In this process, since dust-proof water is injected into the ball mill 111 and each ball mill 112 is submerged in the dust-proof water, when multiple ball mills 112 grind the lithium battery pole pieces, the lithium battery pole pieces can be kept in a wet state to avoid excessive dust generated during the grinding process and causing dust overflow. Similarly, when the powdered lithium battery pole pieces are in the drum screen 211, it can also avoid excessive dust generated during the screening process and causing dust overflow. In this way, the above-mentioned lithium battery pole piece recycling equipment can reduce dust overflow.

[0037] Specifically, the volume ratio of the lithium battery pole pieces to the dust-proof water in the ball mill 111 is V, which satisfies: 1:10≤V≤1:3.

[0038] More specifically, the volume ratio V of the lithium battery pole piece to the dust-proof water in the ball mill 111 can be 1:10, 1:6, 3:10, 1:3, etc.

[0039] In this embodiment, when the lithium battery pole piece is ground in the ball mill 111, as the ball mill 111 rolls and the lithium battery pole piece collides with the multiple ball milling parts 112, the powdered lithium battery pole piece will be washed out of the first discharge port 1111 along with the dustproof water, and enter the drum screen 211 through the first feed port 2111. If V is less than 1:10, the dustproof water content in the ball mill 111 will be too much, which will waste water resources. At the same time, too much dustproof water will enter the drum screen 211, which will easily cause the dustproof water to overflow the drum screen device 200, which will easily cause the above-mentioned lithium battery pole piece recycling equipment. Electrical components are damaged. If V>1:3, the dust-proof water content in the ball mill 111 will be too little. In this way, it cannot be guaranteed that the lithium battery pole pieces are all in a moist state. When the lithium battery pole pieces are ground, dust is easily generated. At the same time, too little dust-proof water content will also reduce the lubrication degree between the multiple ball mills 112 and the lithium battery pole pieces, resulting in a decrease in the grinding efficiency of the multiple ball mills 112 on the lithium battery pole pieces. When 1:10≤V≤1:3, it can prevent the dust-proof water from overflowing the drum screen device 200, and can ensure that the lithium battery pole pieces are all in a moist state. At the same time, it can also improve the grinding efficiency of the multiple ball mills 112 on the lithium battery pole pieces.

[0040] Specifically, refer to Figure 1 As shown, in this embodiment, the above-mentioned lithium battery pole piece recycling equipment also includes a first connecting tube 300, one end of the first connecting tube 300 is connected to the first discharge port 1111, and the other end of the first connecting tube 300 is connected to the first feed port 2111, so that dust-proof water and powdered lithium battery pole pieces can enter the drum screen device 200 from the ball mill device 100 through the first connecting tube 300.

[0041] Reference Figure 3 As shown, the diameters of any two ball mills 112 are equal or different, and the diameter of any one ball mill 112 is D1, which satisfies: 10 mm ≤ D1 ≤ 60 mm.

[0042] Specifically, the diameter D1 of any ball mill 112 can be 10 mm, 20 mm, 30 mm, 40 mm, 60 mm, etc.

[0043] In this embodiment, the diameter of each ball mill 112 can be made equal, or the diameter of each ball mill 112 can be made unequal, or the diameter of some ball mills 112 can be made equal. The specific value is obtained based on multiple experimental experiences, so that the multiple ball mills 112 have the highest grinding efficiency and grinding effect on the lithium battery pole piece. If D1 is less than 10mm, the diameter of the ball mill 112 will be too small, further reducing the grinding force of the ball mill 112 on the lithium battery pole piece, and it is easy to cause the lithium battery pole piece to be unable to be ground by the multiple ball mills 112. Phenomenon, if D1>60mm, the diameter of the ball mill 112 will be too large, and further the ball mill 112 will not be able to fully grind the lithium battery pole pieces, resulting in the particle size of the ground lithium battery pole pieces being too large, and unable to enter the drum screen device 200 along with the dust-proof water. When 10mm≤D1≤60mm, the ball mill 112 can have a stronger grinding force on the lithium battery pole pieces, and at the same time, it can also make the ball mill 112 fully grind the lithium battery pole pieces, so that the particle size of the ground lithium battery pole pieces meets the requirement of flowing with the water flow.

[0044] Reference Figure 2 as well as Figure 3 As shown, in this embodiment, the ball milling device 100 also includes a first driving component 120, the first driving component 120 includes a first driving member 121 and a first driving wheel 122, and the ball milling cylinder 111 has a first driven wheel 1112 at one end along the preset direction. The first driven wheel 1112 is engaged with the first driving wheel 122, and the first driving member 121 drives the first driving wheel 122 to rotate around the preset direction, so that the first driving wheel 122 drives the first driven wheel 1112 to rotate around the preset direction, further causing the ball milling cylinder 111 to rotate around the preset direction.

[0045] It should be noted that the default direction is Figure 1 The direction pointed by x.

[0046] Reference Figure 5 As shown, the aperture of the mesh hole 2113 is D2, which satisfies: 38 μm≤D2≤850 μm.

[0047] Specifically, the aperture D2 of the mesh hole 2113 can be 38 μm, 100 μm, 200 μm, 300 μm, 400 μm, 500 μm, 600 μm, 700 μm, 850 μm, etc.

[0048] In this embodiment, if D2 is less than 38 μm, that is, the mesh of the drum screen 211 is less than 20 mesh, when the drum screen 211 screens the powdered lithium battery pole pieces, the aperture of the mesh hole 2113 may be smaller than the particle size of the battery black powder, making the mesh hole 2113 easily clogged, resulting in reduced screening efficiency. If D2 is greater than 850 μm, that is, the mesh of the drum screen 211 is greater than 160 mesh, when the drum screen 211 screens the powdered lithium battery pole pieces, the aperture of the mesh hole 2113 may be larger than the particle size of the current collector, causing the current collector to be discharged through the mesh hole 2113, further resulting in reduced purity of the battery black powder. When 38 μm ≤ D2 ≤ 850 μm, the possibility of the mesh hole 2113 being blocked can be reduced, thereby improving the screening efficiency, and the possibility of the current collector being discharged through the mesh hole 2113 can be reduced, thereby improving the purity of the battery black powder.

[0049] Reference Figure 4 as well as Figure 5 As shown, the drum screen assembly 210 also includes an outer shell 212, the drum screen 211 is arranged in the outer shell 212, and the first feed port 2111 and the second discharge port 2112 are exposed outside the outer shell 212, the screen hole 2113 is located inside the outer shell 212, and the outer shell 212 is provided with a third discharge port 2121, and the third discharge port 2121 is connected to the interior of the outer shell 212 and the screen hole 2113.

[0050] In this embodiment, when the powdered lithium battery electrodes enter the drum screen assembly 210 along with the dust-proof water, the dust-proof water and the battery black powder will flow through the first feed port 2111, the interior of the drum screen 211, the screen holes 2113 and the interior of the outer shell 212 in sequence, and finally be discharged from the drum screen assembly 210 through the third discharge port 2121. The current collector can pass through the first feed port 2111 and the interior of the drum screen 211 in sequence, and finally be discharged from the drum screen assembly 210 through the second discharge port 2112. In this way, the battery black powder and the current collector can be separated, thereby improving the purity of the battery black powder and the current collector, and the recovered battery black powder can be directly put into recycling without additional processes, which is not only beneficial to the recycling of battery materials, but also has low production energy consumption and is environmentally friendly.

[0051] Reference Figure 4 As shown, the drum screen device 200 further includes a spray assembly 220 , which includes a plurality of spray members 221 . Each spray member 221 is disposed in the housing 212 , and spray water sprayed by the plurality of spray members 221 at least partially falls onto the drum screen 211 .

[0052] In this embodiment, when the powdered lithium battery pole pieces enter the drum screen 211, the material may adhere to the drum screen 211, causing the screen holes 2113 to be blocked. Since the spray water sprayed by the multiple spray parts 221 at least partially falls on the drum screen 211, the material adhering to the drum screen 211 can be washed down by the spray water, thereby reducing the possibility of the screen holes 2113 being blocked and improving the screening efficiency of the drum screen 211 for the powdered lithium battery pole pieces.

[0053] Specifically, the plurality of spraying members 221 are spaced apart along the axial direction of the drum screen 211 , so that all parts of the drum screen 211 can be sprayed with spray water.

[0054] Reference Figure 5 As shown, in the radial direction of the drum screen 211 , the water level in the shell 212 is lower than the first feed port 2111 and the second discharge port 2112 close to the bottom end of the shell 212 .

[0055] In this embodiment, since the water level line in the shell 212 is lower than the first feed port 2111 and the second discharge port 2112 near the bottom of the shell 212, the water in the shell 212 will not overflow through the first feed port 2111 and the second discharge port 2112, thereby reducing the possibility of battery black powder overflowing from the first feed port 2111 and the second discharge port 2112 along with the water, and at the same time reducing the risk of damage to the electrical components of the above-mentioned lithium battery electrode recycling equipment caused by the overflowing water.

[0056] Continue to refer to Figure 5 As shown, the third discharge port 2121 is arranged at the bottom of the outer shell 212. In the radial direction of the drum screen 211, the distance between the water level line in the outer shell 212 and the third discharge port 2121 is L1, and the distance between the bottom of the drum screen 211 and the third discharge port 2121 is L2, satisfying: -5cm≤L1-L2≤5cm.

[0057] Specifically, L1-L2 can be -5cm, -3cm, 0, 3cm, 5cm, etc.

[0058] In this embodiment, if L1-L2 is less than -5cm, it means that the amount of water sprayed into the outer shell 212 by the spray part 221 is too small, and the material adhering to the drum screen 211 may not be flushed down, resulting in a decrease in the screening efficiency of the drum screen 211. If L1-L2 is greater than 5cm, it means that the amount of water in the outer shell 212 is too much, and the water in the outer shell 212 may overflow through the first feed port 2111 and the second discharge port 2112, thereby causing the overflowed water to damage the electrical components of the above-mentioned lithium battery pole piece recycling equipment. When -5cm≤L1-L2≤5cm, it can not only ensure that the drum screen 211 is not blocked and improve the screening efficiency of the drum screen 211, but also reduce the possibility of water overflowing through the first feed port 2111 and the second discharge port 2112, thereby reducing the risk of damage to the electrical components of the above-mentioned lithium battery pole piece recycling equipment caused by the overflowed water.

[0059] Specifically, the plurality of spraying members 221 are all disposed on the top of the housing 212 so that the spraying water can fall into the bottom of the housing 212 .

[0060] Continue to refer to Figure 5 As shown, the drum screen device 200 also includes a water level control component 230, which includes a first water pump 231. The first water pump 231 is arranged at the third discharge port 2121. When L1-L2 is less than -5cm, the first water pump 231 is turned off, and when L1-L2 is greater than 5cm, the first water pump 231 is turned on.

[0061] In this embodiment, as the dust-proof water and the spray water increase, the water level in the shell 212 will gradually rise. When the water level in the shell 212 rises to L1-L2>5cm, the first water pump 231 is turned on. At this time, the water in the shell 212 and the battery black powder are pumped out from the third discharge port 2121 through the first water pump 231 to lower the water level in the shell 212. When the water level in the shell 212 drops to L1-L2<-5cm, the first water pump 231 is turned off. At this time, as the dust-proof water and the spray water increase, the water level in the shell 212 will gradually rise. When the water level in the shell 212 rises to L1-L2>5cm, the first water pump 231 is turned on again, and this cycle is repeated to ensure that the water level line in the shell 212 meets: -5cm≤L1-L2≤5cm.

[0062] Specifically, in this embodiment, the first water pump 231 is a horizontal screw pump.

[0063] Reference Figure 4As shown, the water level control component 230 also includes a water storage tank 232, and the outer shell 212 is also provided with an overflow port 2122 connected to the interior of the outer shell 212, the overflow port 2122 is spaced apart from the second discharge port 2112 and the first feed port 2111, and the overflow port 2122 is arranged between the second discharge port 2112 and the third discharge port 2121, and the overflow port 2122 is connected to the water storage tank 232.

[0064] In this embodiment, if the water level in the shell 212 rises to L1-L2>5cm, the water in the shell 212 can overflow into the water storage tank 232 through the overflow port 2122, playing an emergency risk avoidance role and preventing the overflowing water from damaging the electrical components of the above-mentioned lithium battery electrode recovery equipment.

[0065] Continue to refer to Figure 4 As shown, in this embodiment, the spray assembly 220 also includes a second water pump 222 and a second connecting pipe 223. The first end of the second connecting pipe 223 is connected to the interior of the water storage tank 232, and the other end of the second connecting pipe 223 is connected to each spray element 221. The second water pump 222 is arranged on the connecting pipe. In this way, the overflow water can be received by the water storage tank 232, and the spray water source can be provided to the spray element 221 through the water storage tank 232.

[0066] Reference Figure 4 as well as Figure 5 As shown, in this embodiment, the drum screen device 200 also includes a second drive assembly 240, the second drive assembly 240 includes a second drive member 241 and a second driving wheel 242, the drum screen 211 has a second driven wheel 2114 at one end along the preset direction, the second driven wheel 2114 is engaged with the second driving wheel 242, the second drive member 241 drives the second driving wheel 242 to rotate around the preset direction, so that the second driving wheel 242 drives the second driven wheel 2114 to rotate around the preset direction, and further causes the drum screen 211 to rotate around the preset direction.

[0067] Reference Figure 1 As shown, in this embodiment, the above-mentioned lithium battery pole piece recycling equipment also includes a conveying device 400, the conveying device 400 includes a third driving member 410 and a conveying member 420 driven and connected to the third driving member 410, the third driving member 410 drives the conveying member 420 to move in a direction close to the ball mill 111, the ball mill 111 is provided with a second feed port 1113, and the output end of the conveying member 420 is arranged close to the second feed port 1113, so that the lithium battery pole piece fragments can be conveyed into the ball mill 111 through the conveying member 420.

[0068] Reference Figure 1As shown, in this embodiment, the above-mentioned lithium battery pole piece recycling equipment also includes a filter press device 500, and the filter press device 500 includes a filter press element 510 and a third connecting pipe 520. One end of the third connecting pipe 520 is connected to the third discharge port 2121, and the other end of the third connecting pipe 520 is connected to the input end of the filter press element 510. The first water pump 231 is arranged on the third connecting pipe 520, so that the water in the outer shell 212 and the battery black powder can enter the filter press element 510 through the third connecting pipe 520. Under the action of the filter press element 510, the battery black powder is dehydrated and the wastewater is discharged from the drain port of the filter press element 510. The dehydrated battery black powder can be recycled as a battery recycled material after manual collection.

[0069] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0070] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A lithium battery pole piece recycling device, characterized in that: include: A ball milling device (100) includes a ball milling assembly (110), the ball milling assembly (110) includes a rolling ball milling cylinder (111) and a plurality of ball milling pieces (112), the ball milling cylinder (111) is filled with dustproof water, the plurality of ball milling pieces (112) are movably arranged in the ball milling cylinder (111), and each of the ball milling pieces (112) is submerged in the dustproof water, and the ball milling cylinder (111) is provided with a first discharge port (1111); A drum screen device (200) includes a drum screen assembly (210), the drum screen assembly (210) includes a rolling drum screen (211), the drum screen (211) is provided with a first feed port (2111) and a second discharge port (2112), the first feed port (2111) and the second discharge port (2112) are both connected to the interior of the drum screen (211), and the first feed port (2111) is connected to the first discharge port (1111), and the second discharge port (2112) and the screen mesh (2113) of the drum screen (211) are both connected to the outside.

2. The lithium battery pole piece recycling equipment according to claim 1, characterized in that: The volume ratio of the lithium battery pole piece in the ball mill (111) to the dustproof water is V, which satisfies the following: 1:3≤V≤1:

10.

3. The lithium battery pole piece recycling equipment according to claim 1, characterized in that: The diameters of any two of the ball milling pieces (112) are equal or unequal, and the diameter of any one of the ball milling pieces (112) is D1, satisfying the following: 10 mm ≤ D1 ≤ 60 mm.

4. The lithium battery pole piece recycling equipment according to claim 1, characterized in that: The aperture of the sieve hole (2113) is D2, which satisfies: 38μm≤D2≤850μm.

5. The lithium battery pole piece recycling equipment according to any one of claims 1 to 4, characterized in that: The drum screen assembly (210) further includes a housing (212), the drum screen (211) is arranged in the housing (212), and the first feed port (2111) and the second discharge port (2112) are exposed outside the housing (212), the sieve holes (2113) are located inside the housing (212), and the housing (212) is provided with a third discharge port (2121), and the third discharge port (2121) is communicated with the interior of the housing (212) and the sieve holes (2113).

6. The lithium battery pole piece recycling equipment according to claim 5, characterized in that: The drum screen device (200) further includes a spray assembly (220), the spray assembly (220) including a plurality of spray parts (221), each of the spray parts (221) being disposed in the housing (212), and spray water sprayed by the plurality of spray parts (221) at least partially falling onto the drum screen (211).

7. The lithium battery pole piece recycling equipment according to claim 5, characterized in that: In the radial direction of the drum screen (211), the water level in the housing (212) is lower than the first feed port (2111) and one end of the second discharge port (2112) close to the bottom of the housing (212).

8. The lithium battery pole piece recycling equipment according to claim 5, characterized in that: The third discharge port (2121) is arranged at the bottom of the outer shell (212). In the radial direction of the drum screen (211), the distance between the water level line in the outer shell (212) and the third discharge port (2121) is L1, and the distance between the bottom of the drum screen (211) and the third discharge port (2121) is L2, satisfying the following: -5 cm ≤ L1 - L2 ≤ 5 cm.

9. The lithium battery pole piece recycling equipment according to claim 8, characterized in that: The drum screen device (200) further includes a water level control component (230), wherein the water level control component (230) includes a first water pump (231), wherein the first water pump (231) is arranged at the third discharge port (2121), and when L1-L2 is less than -5 cm, the first water pump (231) is turned off, and when L1-L2 is greater than 5 cm, the first water pump (231) is turned on.

10. The lithium battery pole piece recycling equipment according to claim 9, characterized in that: The water level control component (230) further includes a water storage bin (232); the housing (212) is further provided with an overflow port (2122) in communication with the interior of the housing (212); the overflow port (2122) is spaced apart from the second discharge port (2112) and the first feed port (2111); the overflow port (2122) is arranged between the second discharge port (2112) and the third discharge port (2121); and the overflow port (2122) is in communication with the water storage bin (232).

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