A lithium battery graphite negative electrode waste recovery device and recovery method
By designing cutting, crushing, rolling, and screening mechanisms, the problems of uneven crushing and adhesion of graphite anodes for lithium batteries were solved, achieving uniform recycling of graphite powder and efficient utilization of resources.
Patent Information
- Application Number
- CN202311645359.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-04
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2043-12-04
AI Technical Summary
Existing pulverizers are not effective at pulverizing graphite anodes for lithium batteries, resulting in graphite powder of varying sizes that tends to stick inside the pulverizer, leading to resource waste.
A lithium battery graphite anode waste recycling device was designed, including a cutting mechanism, a crushing roller, a rolling roller, and a screening and grinding mechanism. Through steps such as cutting, crushing, rolling, and screening, the uniformity of graphite powder particles is ensured, and brushes and scrapers are set to remove adhering substances, thereby reducing resource waste.
It achieves uniform crushing and effective recycling of graphite powder, reduces energy consumption, and avoids resource waste.
Smart Images
Figure CN117638284B_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of lithium battery graphite negative electrode recycling, in particular to a lithium battery graphite negative electrode waste recycling device and method. BACKGROUND
[0002] At present, the research on lithium ion battery negative electrode materials is very extensive, such as carbon nanotubes, carbon nanofibers, graphene and porous carbon and many other functional conductive carbon materials have made great progress in the field of lithium ion battery negative electrode, however, these materials are usually expensive, and cannot be mass-produced, hindering their commercialization process, since graphite has good electrical conductivity, ordered layered crystal structure, high reversible lithium storage capacity, low working potential and stability, graphite as the main application object of lithium ion battery negative electrode material has been widely used.
[0003] Lithium ion batteries are discarded after reaching the service life, and the existing lithium battery negative electrode graphite material recycling process is to directly put the recycled graphite negative electrode sheet into a pulverizer for crushing, but since the existing pulverizer has poor crushing effect when crushing the lithium battery graphite negative electrode, the graphite powder produced by crushing is of different sizes, which is not convenient for subsequent recycling and utilization.
[0004] Therefore, the present application provides a lithium battery graphite negative electrode waste recycling device and method, which is provided with a cutting mechanism, a crushing roller, a rolling roller, a driving mechanism and a screening and grinding mechanism, so as to solve the above problems. SUMMARY
[0005] In view of the shortcomings of the prior art, the present application provides a lithium battery graphite negative electrode waste recycling device and method, which solves the problem of poor crushing effect of the existing pulverizer when crushing the lithium battery graphite negative electrode, resulting in graphite powder of different sizes, which is not convenient for subsequent recycling and utilization, and the lithium battery graphite negative electrode is easily adhered to the inside of the pulverizer during the crushing process, causing resource waste.
[0006] In order to achieve the above object, the present application is realized by the following technical scheme: A lithium battery graphite negative electrode waste recovery device, comprising a box body, a feeding box is fixed on the top wall of the box body, a cutting mechanism is installed in the feeding box, a discharge chute is opened on the top wall of the box body corresponding to the position of the cutting mechanism, a vertical plate is fixed on the top wall of the inner cavity of the box body, two crushing rollers are rotatably installed between the vertical plate and the upper part of the side wall of the inner cavity of the box body, a first inclined plate is fixed on the top of the side wall of the vertical plate and the top of the side wall of the inner cavity of the box body, the first inclined plate is located above the crushing roller, two rolling rollers are rotatably installed below the crushing roller, a second inclined plate is fixed on the middle part of the side wall of the vertical plate and the upper part of the side wall of the inner cavity of the box body, the second inclined plate is located above the rolling roller, a brush is fixed on the vertical plate side wall and the inner wall of the box body corresponding to the position of the crushing roller, a scraper is fixed on the vertical plate side wall and the inner wall of the box body corresponding to the position of the rolling roller, a driving mechanism is installed on the front wall of the box body, a first motor is fixed on the rear wall of the box body, the power shaft of the first motor is fixedly connected to the shaft center position of any one of the crushing rollers through the bearing penetrating the rear wall of the box body, a discharge hopper is fixed between the bottom end of the vertical plate and the inner wall of the box body, a screening and grinding mechanism is installed in the inner cavity of the box body, the discharge hopper is connected to the screening and grinding mechanism through a material guide pipe, a second motor for driving the screening and grinding mechanism to work is fixed on the side wall of the box body, a collection box is slidingly inserted into the front wall of the box body, and the collection box is located directly below the screening and grinding mechanism.
[0007] Preferably, the cutting mechanism comprises a plurality of limiting plates slidingly installed in the feeding box, each group of limiting plates has two limiting plates, the front and rear ends of the limiting plates are fixed with sliding blocks, the front and rear walls of the feeding box are provided with guide grooves corresponding to the positions of the sliding blocks, the sliding blocks are slidingly installed in the guide grooves, the front and rear walls of the feeding box are symmetrically fixed with two mounting plates, a transmission rod is rotatably installed between the two mounting plates on the front side, a guide shaft is fixed between the two mounting plates on the rear side, the guide shaft slidingly penetrates through the corresponding sliding block, and the end of the transmission rod penetrates through the mounting plate on one side through the bearing and is fixed with a knob.
[0008] Preferably, a cutting plate slidingly penetrates through the middle part of the side wall of the feeding box, a bearing plate slidingly penetrates through the bottom part of the side wall of the feeding box, the side wall of the feeding box and the limiting plate are provided with through grooves corresponding to the positions of the cutting plate and the bearing plate, a third motor is fixed on the right wall of the feeding box, a first gear is fixed on the power output end of the third motor, and the bottom wall of the cutting plate and the top wall of the bearing plate are provided with gear grooves meshing with the first gear.
[0009] Preferably, the left end of the cutting plate is fixed with a tool bit, and each group of limiting plates is symmetrically provided with a plurality of triangular grooves at one end close to each other.
[0010] Preferably, the third motor is a servo motor or a stepping motor.
[0011] Preferably, the transmission rod is fixedly connected by a plurality of bidirectional threaded rods, the number of the bidirectional threaded rods is the same as the number of the limiting plates, and the slider at the front end of each group of limiting plates is screwed with both ends of the corresponding bidirectional threaded rod.
[0012] Preferably, the driving mechanism comprises a shell fixed to the front wall of the box, the rotating shafts of the crushing rollers all pass through the front wall of the box through bearings and are fixed with No. 2 gears, the two No. 2 gears are connected by meshing with each other, each No. 2 gear is meshingly connected with a No. 3 gear below, the No. 3 gear is rotatably installed on the front wall of the box, each No. 3 gear is meshingly connected with a No. 4 gear below, the rotating shafts of the rolling rollers all pass through the front wall of the box through bearings and are fixedly connected with the axial positions of the No. 4 gears, and the No. 2 gears, the No. 3 gears and the No. 4 gears are all located in the shell.
[0013] Preferably, the screening and grinding mechanism comprises a cylinder fixed to the inner wall of the box, a screen cylinder is rotatably installed in the cylinder, a plurality of receiving grooves are symmetrically formed in the inner wall of the screen cylinder, a plurality of screen holes are formed through the side wall of the screen cylinder, a plurality of steel balls are placed in the screen cylinder, and a discharge port is formed in the bottom wall of the cylinder.
[0014] Preferably, the bottom end of the material guide pipe passes through the cylinder and is rotatably connected with the side wall of the screen cylinder, and the power shaft of the No. 2 motor passes through the box and the side wall of the cylinder through a bearing and is fixedly connected with the right end of the screen cylinder.
[0015] A method for recycling waste graphite negative electrode of lithium battery, comprising the following steps:
[0016] Step one: adjust the distance between each group of limiting plates according to the thickness of the recycled lithium battery negative graphite plate or the lithium battery negative graphite rod, rotate the knob to drive the transmission rod to rotate, thereby driving the two limiting plates in each group of limiting plates to move closer to or away from each other, so that the lithium battery negative graphite plate or the lithium battery negative graphite rod can be placed between each group of limiting plates;
[0017] Step two: in the initial state, the cutter head on the cutting plate is located on the right side of the feeding box, at this time the carrying plate moves to the leftmost side, and then the lithium battery negative graphite plate or the lithium battery negative graphite rod to be recycled is inserted between each group of limiting plates, and the bottom end of the lithium battery negative graphite plate or the lithium battery negative graphite rod is in contact with the top wall of the carrying plate.
[0018] Step three: open the first motor, the second motor and the third motor, the third motor can drive the first gear to continuously reverse, the first gear drives the cutting plate and the bearing plate to move back and forth through the tooth groove on the bottom wall of the cutting plate and the top wall of the bearing plate, and the lithium battery negative graphite plate or lithium battery negative graphite rod is cut, when the cutter head on the cutting plate moves into the left side wall of the feeding box, the left end of the bearing plate is just located at the left side wall of the feeding box, when the cutter head on the cutting plate moves to the left side, the left end of the bearing plate is located at the right side wall position of the feeding box, so that the cut lithium battery negative graphite plate or lithium battery negative graphite rod can fall into the box smoothly, and the uncut lithium battery negative graphite plate or lithium battery negative graphite rod cannot directly fall into the box;
[0019] Step four: the lithium battery negative graphite plate or lithium battery negative graphite rod after preliminary cutting falls into the two crushing rollers through the discharging chute, the crushing rollers rotate under the drive of the first motor, and the crushing rollers rotate under the drive of the driving mechanism, the crushing rollers crush the cut lithium battery negative graphite plate or lithium battery negative graphite rod, and the crushed lithium battery negative graphite plate or lithium battery negative graphite rod is further crushed by the rolling mill;
[0020] Step five: the graphite powder generated by crushing is introduced into the sieve cylinder through the discharging hopper and the guide pipe, the second motor drives the sieve cylinder to rotate, part of the steel balls will enter the storage groove and move to a high place along with the sieve cylinder and then fall down to impact and massage the graphite powder, at the same time, the steel balls can also grind the graphite powder when rolling along with the sieve cylinder, until the particle diameter of the graphite powder meets the requirements, and then the graphite powder falls into the cylinder through the sieve hole, and finally falls into the collecting box through the discharging port for collection, realizing recycling.
[0021] Beneficial effects
[0022] The application provides a lithium battery graphite negative electrode waste recycling device and method.
[0023] (1) The lithium battery graphite negative electrode waste recycling device and method, the cutting mechanism is arranged to preliminarily cut the lithium battery negative graphite plate or lithium battery negative graphite rod to be recycled, facilitating subsequent crushing, and the crushing roller, the rolling mill and the screening and grinding mechanism are arranged to crush and grind the lithium battery negative graphite plate or lithium battery negative graphite rod, so that the generated graphite powder particles are uniform, facilitating subsequent utilization.
[0024] (2) The lithium battery graphite negative electrode waste recycling device and method, the brush is arranged to remove the graphite powder adhered to the crushing roller, and the scraper is arranged to remove the graphite powder adhered to the rolling mill, so that the graphite powder adhered to the crushing roller and the rolling mill is avoided.
[0025] (3) The lithium battery graphite negative electrode waste recycling device and recycling method, the driving mechanism is arranged to link the crushing roller and the rolling roller, the number of motors is reduced, and the energy consumption is reduced. BRIEF DESCRIPTION OF DRAWINGS
[0026] Fig. 1 is the external front structure perspective view of the present application;
[0027] Fig. 2 is the external rear structure perspective view of the present application;
[0028] Fig. 3 is the internal structure perspective view of the box of the present application;
[0029] Fig. 4 is the front structure perspective view of the cutting mechanism of the present application;
[0030] Fig. 5 is the rear structure perspective view of the cutting mechanism of the present application;
[0031] Fig. 6 is the structure perspective view of the driving mechanism of the present application;
[0032] Fig. 7 is the half-section view of the grinding and screening mechanism of the present application.
[0033] In the figure, 1 is a box, 2 is a feeding box, 3 is a cutting mechanism, 31 is a limiting plate, 32 is a sliding block, 33 is a guide groove, 34 is a mounting plate, 35 is a transmission rod, 36 is a knob, 37 is a guide shaft, 38 is a cutting plate, 39 is a bearing plate, 310 is a No. 3 motor, 311 is a No. 1 gear, 312 is a gear groove, 313 is a through groove, 314 is a cutter head, 315 is a triangular groove, 4 is a discharging chute, 5 is a vertical plate, 6 is a crushing roller, 7 is a No. 1 inclined plate, 8 is a rolling roller, 9 is a No. 2 inclined plate, 10 is a brush, 11 is a scraper, 12 is a driving mechanism, 121 is a shell, 122 is a No. 2 gear, 123 is a No. 3 gear, 124 is a No. 4 gear, 13 is a No. 1 motor, 14 is a discharging hopper, 15 is a screening and grinding mechanism, 151 is a cylinder, 152 is a screen cylinder, 153 is a discharging port, 154 is a storage groove, 155 is a screen hole, 16 is a material guide pipe, 17 is a No. 2 motor, and 18 is a collecting box. DETAILED DESCRIPTION
[0034] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0035] Embodiment one:
[0036] See Figs. 1-3 The utility model provides a kind of lithium battery graphite negative electrode waste recovery device, including box 1, box 1 top wall is fixed with feed tank 2, cutting mechanism 3 is installed in feed tank 2, box 1 top wall is opened with discharge chute 4 corresponding cutting mechanism 3 position, vertical plate 5 is fixed in the top wall of the inner chamber of box 1, two crushing rollers 6 are rotatably installed between vertical plate 5 and the upper portion of the side wall of the inner chamber of box 1, the top of the side wall of vertical plate 5 and the top of the side wall of the inner chamber of box 1 are fixed with first inclined plate 7, first inclined plate 7 is located above crushing roller 6, two rolling mill 8 are rotatably installed below crushing roller 6, the upper portion of the side wall of vertical plate 5 and the upper portion of the side wall of the inner chamber of box 1 are fixed with second inclined plate 9, second inclined plate 9 is located above rolling mill 8, the side wall of vertical plate 5 and the inner wall of box 1 are fixed with brush 10 corresponding crushing roller 6 position, the side wall of vertical plate 5 and the inner wall of box 1 are fixed with scraper 11 corresponding rolling mill 8 position, driving mechanism 12 is installed in the front wall of box 1, box 1 rear wall is fixed with first motor 13, the power shaft of first motor 13 is fixedly connected with the axial position of any one crushing roller 6 by bearing and penetrates the rear wall of box 1, discharge hopper 14 is fixed between the bottom end of vertical plate 5 and the inner wall of box 1, screening and grinding mechanism 15 is installed in the inner chamber of box 1, discharge hopper 14 is connected with screening and grinding mechanism 15 by material guide pipe 16, box 1 side wall is fixed with second motor 17 for driving screening and grinding mechanism 15 work, collecting tank 18 is slidably inserted in the front wall of box 1, collecting tank 18 is located directly below screening and grinding mechanism 15.
[0037] In this embodiment, the cutting mechanism 3 is used for the preliminary cutting of the lithium battery negative graphite plate or lithium battery negative graphite rod to be recycled, which facilitates the subsequent crushing. The crushing roller 6 is used for crushing the cut lithium battery negative graphite plate or lithium battery negative graphite rod. The rolling roller 8 is used for rolling and crushing the preliminarily crushed lithium battery negative graphite plate or lithium battery negative graphite rod. The first inclined plate 7 is used to ensure that the lithium battery negative graphite plate or lithium battery negative graphite rod can smoothly fall between the two crushing rollers 6. The second inclined plate 9 is used to ensure that the lithium battery negative graphite plate or lithium battery negative graphite rod can smoothly enter between the two rolling rollers 8. The brush 10 is used to remove the graphite powder adhering to the crushing roller 6. The scraper 11 is used to remove the graphite powder adhering to the rolling roller 8, so as to avoid the waste caused by the graphite powder adhering to the crushing roller 6 and the rolling roller 8. The driving mechanism 12 is used to link the crushing roller 6 and the rolling roller 8, so as to reduce the number of motors used and reduce energy consumption. The discharge hopper 14 and the material guide pipe 16 are used to transmit the graphite powder generated after crushing to the screening and grinding mechanism 15 for the final screening and grinding. The material guide pipe 16 is arc-shaped, and the horizontal section of the end connected with the grinding mechanism 15 is as short as possible, so as to prevent the graphite powder from accumulating in the material guide pipe 16 and failing to be discharged. The screening and grinding mechanism 15 can finely grind and screen the graphite powder generated after crushing, and collect the graphite powder through the collecting box 18.
[0038] Embodiment two
[0039] Please refer to Figs. 4-5The embodiment is based on the embodiment one and provides a technical scheme: the cutting mechanism 3 comprises a plurality of groups of limiting plates 31 slidingly installed in the feeding box 2, each group of limiting plates 31 has two limiting plates 31, the front end and the rear end of each limiting plate 31 are fixedly connected with sliding blocks 32, the feeding box 2 is provided with guide grooves 33 corresponding to the positions of the sliding blocks 32 on the front wall and the rear wall, the sliding blocks 32 are slidingly installed in the guide grooves 33, the front wall and the rear wall of the feeding box 2 are symmetrically fixedly connected with two mounting plates 34, the two mounting plates 34 located on the front side are rotatably connected with a transmission rod 35 between them, the two mounting plates 34 located on the rear side are fixedly connected with a guide shaft 37 between them, the guide shaft 37 slidingly penetrates through the corresponding sliding block 32, one end of the transmission rod 35 penetrates through one side of the mounting plate 34 through a bearing and is fixedly connected with a knob 36. A cutting plate 38 slidingly penetrates through the middle of the side wall of the feeding box 2, a bearing plate 39 slidingly penetrates through the bottom of the side wall of the feeding box 2, the side wall of the feeding box 2 and the limiting plate 31 are provided with through grooves 313 corresponding to the positions of the cutting plate 38 and the bearing plate 39, the right wall of the feeding box 2 is fixedly connected with a third motor 310, the power output end of the third motor 310 is fixedly connected with a first gear 311, the bottom wall of the cutting plate 38 and the top wall of the bearing plate 39 are provided with tooth grooves 312 meshing with the first gear 311. The left end of the cutting plate 38 is fixedly connected with a tool bit 314, and the end of each group of limiting plates 31 close to each other is symmetrically provided with a plurality of triangular grooves 315. The third motor 310 is a servo motor or a stepping motor. The transmission rod 35 is fixedly connected with a plurality of bidirectional threaded rods, the number of the bidirectional threaded rods is the same as the number of the groups of limiting plates 31, and the sliding block 32 at the front end of each group of limiting plates 31 is screw-connected with both ends of the corresponding bidirectional threaded rod.
[0040] In this embodiment, the cutting mechanism 3 is used for preliminary cutting of the lithium battery negative graphite plate or lithium battery negative graphite rod to be recycled, which facilitates subsequent crushing, and can be suitable for limiting different thicknesses of lithium battery negative graphite plates and different diameters of lithium battery negative graphite rods for cutting. When it is necessary to adjust the distance between the two limiting plates 31 in each group, the knob 36 is rotated, and the knob 36 drives the transmission rod 35 to rotate. Since the transmission rod 35 is composed of a plurality of bidirectional threaded rods, it can drive the two limiting plates 31 in each group to approach or move away from each other. The triangular groove 315 provided on the limiting plate 31 is used to limit the lithium battery negative graphite rod. In the initial state, the cutter head 314 on the cutting plate 38 is located on the right side of the feeding box 2, and at this time the bearing plate 39 moves to the leftmost side. Then, the lithium battery negative graphite plate or lithium battery negative graphite rod to be recycled is inserted between each group of limiting plates 31, and the bottom end of the lithium battery negative graphite plate or lithium battery negative graphite rod is in contact with the top wall of the bearing plate 39. When it is necessary to preliminarily cut the lithium battery negative graphite plate or lithium battery negative graphite rod, the switch of the third motor 310 is turned on. The third motor 310 is a servo motor or a stepping motor, so it can continuously reverse the first gear 311 through the third motor 310. The first gear 311 drives the cutting plate 38 and the bearing plate 39 to move back and forth through the tooth groove 312 on the bottom wall of the cutting plate 38 and the top wall of the bearing plate 39, and cuts the lithium battery negative graphite plate or lithium battery negative graphite rod. The mutual cooperation of the cutting plate 38 and the bearing plate 39 can cut the graphite rod or the graphite plate according to the preset length, which is the distance between the cutting plate 38 and the bearing plate 39.
[0041] Embodiment three:
[0042] Please refer to Fig. 6 , the embodiment provides a technical scheme based on embodiment one: the drive mechanism 12 includes an outer shell 121 fixed on the front wall of the box body 1, the rotating shafts of the crushing rollers 6 all pass through the front wall of the box body 1 through bearings and are fixed with second gears 122, the two second gears 122 are connected with each other, the second gears 122 below are all connected with third gears 123, the third gears 123 are rotatably installed on the front wall of the box body 1, the third gears 123 below are all connected with fourth gears 124, the rotating shafts of the rolling rollers 8 all pass through the front wall of the box body 1 through bearings and are fixedly connected with the shaft center positions of the fourth gears 124, and the second gears 122, the third gears 123 and the fourth gears 124 are all located in the outer shell 121.
[0043] In this embodiment, the drive mechanism 12 is used to link the crushing rollers 6 and the rolling rollers 8. When the crushing rollers 6 are driven by the first motor 13, they can drive the rolling rollers 8 to rotate through the second gears 122, the third gears 123 and the fourth gears 124.
[0044] Embodiment four:
[0045] Referring to Fig. 7 The embodiment provides a technical scheme based on the embodiment one: the screening and grinding mechanism 15 comprises a cylinder 151 fixed to the inner wall of the box body 1, the cylinder 151 is rotatably installed with a screening cylinder 152, a plurality of receiving grooves 154 are symmetrically formed in the inner wall of the screening cylinder 152, a plurality of screening holes 155 are formed through the side wall of the screening cylinder 152, a plurality of steel balls are placed in the screening cylinder 152, and a discharge port 153 is formed in the bottom wall of the cylinder 151. The bottom end of the guide pipe 16 penetrates the cylinder 151 and is rotatably connected with the side wall of the screening cylinder 152, and the power shaft of the second motor 17 penetrates the side wall of the box body 1 and the cylinder 151 and is fixedly connected with the right end of the screening cylinder 152 through a bearing.
[0046] In the embodiment, the screening and grinding mechanism 15 can finely grind and screen the graphite powder generated by crushing, and collect the graphite powder through the collecting box 18. When the screening and grinding mechanism 15 works, the graphite powder generated by crushing through rolling is introduced into the screening cylinder 152 through the discharge hopper 14 and the guide pipe 16, the second motor 17 drives the screening cylinder 152 to rotate, and part of the steel balls will enter the receiving grooves 154 and move to a high position along with the screening cylinder 152 and then fall to impact and massage the graphite powder. At the same time, the steel balls can also grind the graphite powder when rolling along with the screening cylinder 152, until the particle diameter of the graphite powder meets the requirements, and then the graphite powder falls into the cylinder 151 through the screening holes 155, and finally falls into the collecting box 18 through the discharge port 153 for collection, so that the graphite powder can be recycled.
[0047] Meanwhile, the contents not described in detail in the specification all belong to the prior art known by those skilled in the art.
[0048] A lithium battery graphite negative electrode waste recycling method, comprising the following steps:
[0049] Step one: adjust the distance between each set of limiting plates 31 according to the thickness of the recycled lithium battery negative electrode graphite plate or the lithium battery negative electrode graphite rod, rotate the knob 36 to drive the transmission rod 35 to rotate, so that the two limiting plates 31 in each set of limiting plates 31 move closer to or away from each other, so that the lithium battery negative electrode graphite plate or the lithium battery negative electrode graphite rod can be placed between each set of limiting plates 31;
[0050] Step two: in the initial state, the cutter head 314 on the cutting plate 38 is located on the right side of the feeding box 2, at this time the bearing plate 39 moves to the leftmost side, and then the lithium battery negative electrode graphite plate or the lithium battery negative electrode graphite rod to be recycled is inserted between each set of limiting plates 31, and the bottom end of the lithium battery negative electrode graphite plate or the lithium battery negative electrode graphite rod is in contact with the top wall of the bearing plate 39;
[0051] Step three: open No. 1 motor 13, No. 2 motor 17 and No. 3 motor 310, No. 3 motor 310 can drive No. 1 gear 311 to continuously rotate forward and reverse, No. 1 gear 311 drives cutting plate 38 and bearing plate 39 to move back and forth through the tooth groove 312 on the bottom wall of cutting plate 38 and the top wall of bearing plate 39, and cuts the lithium battery negative graphite plate or lithium battery negative graphite rod, when the cutter head 314 on the cutting plate 38 moves to the left side wall of the feeding box 2, the left end of the bearing plate 39 is just located at the left side wall of the feeding box 2, when the cutter head 314 on the cutting plate 38 moves to the left side, the left end of the bearing plate 39 is located at the right side wall position of the feeding box 2, which ensures that the cut lithium battery negative graphite plate or lithium battery negative graphite rod can fall smoothly into the box 1, and ensures that the uncut lithium battery negative graphite plate or lithium battery negative graphite rod cannot directly fall into the box 1;
[0052] Step four: the lithium battery negative graphite plate or lithium battery negative graphite rod after preliminary cutting falls into the two crushing rollers 6 through the discharging chute 4, the crushing rollers 6 rotate under the drive of No. 1 motor 13, and the crushing rollers 6 rotate under the drive of driving mechanism 12, the crushing rollers 6 crush the cut lithium battery negative graphite plate or lithium battery negative graphite rod, and the crushed lithium battery negative graphite plate or lithium battery negative graphite rod is further crushed by the crushing roller 8;
[0053] Step five: the graphite powder generated by crushing is put into the sieve cylinder 152 through the discharging hopper 14 and the guide pipe 16, the sieve cylinder 152 is driven to rotate by No. 2 motor 17, part of the steel balls will enter the storage groove 154 and move to a high place with the sieve cylinder 152 and then fall down to impact and massage the graphite powder, at the same time, the steel balls can also grind the graphite powder when rolling with the sieve cylinder 152, until the particle diameter of the graphite powder meets the requirements, and then fall into the cylinder 151 through the sieve hole 155, and finally fall into the collecting box 18 through the discharging port 153 for collection, realizing recycling.
[0054] It should be noted that in this text, relational terms such as first and second are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.
[0055] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary of the principles and application of the present application. Numerous modifications and adaptions can be effected without departing from the spirit and scope of the present application, which is not limited to the exact construction and arrangement described. It is intended, therefore, to cover all modifications and adaptions that fall within the scope of the claims and their equivalents.
Claims
1. A lithium battery graphite negative electrode waste recovery device comprising a box body (1), characterized in that: The box (1) top wall is fixed with feed tank (2), the feed tank (2) is installed with cutting mechanism (3), the box (1) top wall is correspondingly cut mechanism (3) position and is equipped with the discharge chute (4), the box (1) inner chamber top wall middle part is fixed with the vertical board (5), the vertical board (5) and the box (1) inner chamber side wall upper portion are rotatably installed with two crushing rollers (6), the vertical board (5) side wall top and the box (1) inner chamber side wall top are fixed with one inclined plate (7), the one inclined plate (7) is located above the crushing roller (6), the crushing roller (6) below rotatable installation has two roll (8), the vertical board (5) side wall middle part and the box (1) inner chamber side wall upper portion are fixed with two no. 9 inclined plate, the two no. 9 inclined plate are located above the roll (8), the vertical board (5) side wall and the box (1) inner wall correspond to the crushing roller (6) position and are fixed with the brush (10), the vertical board (5) side wall and the box (1) inner wall correspond to the roll (8) position and are fixed with the scraper (11), the box (1) front wall is installed with drive mechanism (12), the box (1) rear wall is fixed with one motor (13), the power shaft of one motor (13) is fixedly connected to the shaft center position of any one crushing roller (6) through the bearing and penetrates the box (1) rear wall, the vertical board (5) bottom end and the box (1) inner wall are fixed with the discharge hopper (14), the box (1) inner chamber is installed with screening grinding mechanism (15), the discharge hopper (14) is communicated with screening grinding mechanism (15) through the material guide pipe (16), the box (1) side wall is fixed with the no. 2 motor (17) for driving screening grinding mechanism (15) to work, the box (1) front wall is slidably inserted with the collection box (18), the collection box (18) is located directly below screening grinding mechanism (15); The cutting mechanism (3) includes a plurality of groups of limiting plates (31) slidably installed in the feed tank (2), each group of limiting plates (31) has two limiting plates (31), the front and rear ends of the limiting plates (31) are fixed with sliding blocks (32), the front and rear walls of the feed tank (2) are provided with guide grooves (33) corresponding to the positions of the sliding blocks (32), the sliding blocks (32) are slidably installed in the guide grooves (33), the front and rear walls of the feed tank (2) are symmetrically fixed with two mounting plates (34), a transmission rod (35) is rotatably installed between the two mounting plates (34) on the front side, a guide shaft (37) is fixed between the two mounting plates (34) on the rear side, the guide shaft (37) slidably penetrates through the corresponding sliding block (32), and one end of the transmission rod (35) penetrates through one side of the mounting plate (34) through a bearing and is fixed with a knob (36). The cutting plate (38) is slid through the middle of the side wall of the feeding box (2), the bearing plate (39) is slid through the bottom of the side wall of the feeding box (2), the positions corresponding to the cutting plate (38) and the bearing plate (39) of the side wall of the feeding box (2) and the limiting plate (31) are provided with through grooves (313), the right wall of the feeding box (2) is fixed with the third motor (310), the power output end of the third motor (310) is fixed with the first gear (311), the bottom wall of the cutting plate (38) and the top wall of the bearing plate (39) are provided with gear grooves (312) engaged with the first gear (311). The left end of the cutting plate (38) is fixed with a tool bit (314), and each group of limiting plates (31) are symmetrically provided with a plurality of triangular grooves (315) at one end close to each other. The transmission rod (35) is fixedly connected by a plurality of bidirectional threaded rods, the number of the bidirectional threaded rods is the same as the number of groups of the limiting plates (31), and the slider (32) at the front end of each group of the limiting plates (31) is screwed with both ends of the corresponding bidirectional threaded rod. The driving mechanism (12) comprises an outer shell (121) fixed to the front wall of the box body (1), the rotating shafts of the crushing rollers (6) are all penetrated through the front wall of the box body (1) through bearings and fixed with second gears (122), the two second gears (122) are connected in engagement with each other, the second gears (122) are all connected in engagement with third gears (123) below, the third gears (123) are rotatably installed on the front wall of the box body (1), the third gears (123) are all connected in engagement with fourth gears (124) below, the rotating shafts of the crushing rollers (8) are all penetrated through the front wall of the box body (1) through bearings and fixedly connected to the axial positions of the fourth gears (124), and the second gears (122), the third gears (123) and the fourth gears (124) are all located in the outer shell (121).
2. The lithium battery graphite anode scrap recycling device according to claim 1, characterized in that: The third motor (310) is a servo motor or a stepping motor.
3. The lithium battery graphite anode scrap recycling device according to claim 1, characterized in that: The screening and grinding mechanism (15) comprises a cylinder (151) fixed to the inner wall of the box body (1), a screening cylinder (152) rotatably installed in the cylinder (151), a plurality of receiving grooves (154) symmetrically formed in the inner wall of the screening cylinder (152), a plurality of screening holes (155) penetrated through the side wall of the screening cylinder (152), a plurality of steel balls placed in the screening cylinder (152), and a discharge port (153) formed in the bottom wall of the cylinder (151).
4. The lithium battery graphite anode scrap recycling device according to claim 3, characterized in that: The bottom end of the material guide pipe (16) penetrates the cylinder (151) and is rotatably connected with the side wall of the screening cylinder (152), and the power shaft of the second motor (17) penetrates the side wall of the box body (1) and the cylinder (151) through a bearing and is fixedly connected with the right end of the screening cylinder (152).
5. A method for recycling lithium battery graphite anode waste, characterized by: The lithium battery graphite negative electrode waste recovery device of claim 4 comprises the following steps: Step one: according to the thickness of the recovered lithium battery negative graphite plate or lithium battery negative graphite rod, adjust the distance between each set of limiting plate (31), rotate the knob (36) to drive the transmission rod (35) to rotate, so as to drive the two limiting plates (31) in each set of limiting plate (31) to approach or move away from each other, so that the lithium battery negative graphite plate or lithium battery negative graphite rod can be placed between each set of limiting plate (31); Step two: in the initial state, the cutter head (314) on the cutting plate (38) is located on the right side of the feeding box (2), at this time the bearing plate (39) moves to the leftmost side, and then the lithium battery negative graphite plate or lithium battery negative graphite rod to be recycled is inserted between each set of limiting plate (31), and the bottom end of the lithium battery negative graphite plate or lithium battery negative graphite rod is in contact with the top wall of the bearing plate (39); Step three: turn on the first motor (13), the second motor (17) and the third motor (310), the third motor (310) can drive the first gear (311) to rotate continuously, the first gear (311) drives the cutting plate (38) and the bearing plate (39) to move back and forth through the tooth groove (312) on the bottom wall of the cutting plate (38) and the top wall of the bearing plate (39), and the lithium battery negative graphite plate or lithium battery negative graphite rod is cut, when the cutter head (314) on the cutting plate (38) moves to the left wall of the feeding box (2), the left end of the bearing plate (39) is located at the left wall of the feeding box (2), when the cutter head (314) on the cutting plate (38) moves to the left, the left end of the bearing plate (39) is located at the right wall of the feeding box (2), which ensures that the cut lithium battery negative graphite plate or lithium battery negative graphite rod can fall into the box (1) smoothly, and at the same time ensures that the uncut lithium battery negative graphite plate or lithium battery negative graphite rod will not directly fall into the box (1); Step four: after the preliminary cutting, the lithium battery negative graphite plate or lithium battery negative graphite rod is dropped into the two crushing rollers (6) through the discharging chute (4), the crushing roller (6) is driven to rotate by the first motor (13), and the crushing roller (6) is driven to rotate by the driving mechanism (12), the crushing roller (6) crushes the cut lithium battery negative graphite plate or lithium battery negative graphite rod, and the crushed lithium battery negative graphite plate or lithium battery negative graphite rod is further crushed by the crushing roller (8); Step five: the graphite powder produced by crushing is introduced into the sieve cylinder (152) through the discharge hopper (14) and the guide pipe (16), the second motor (17) drives the sieve cylinder (152) to rotate, part of the steel balls will enter the storage groove (154) and move to a high place along with the sieve cylinder (152) and then fall down to impact and massage the graphite powder, at the same time, the steel balls can also grind the graphite powder by rolling along with the sieve cylinder (152), until the particle diameter of the graphite powder meets the requirements, the graphite powder falls into the cylinder (151) through the sieve hole (155), and finally falls into the collection box (18) through the discharge port (153) for collection, realizing recycling.
Citation Information
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