Raw material crushing device for lithium ion battery negative electrode material

Abstract

The invention belongs to the technical field of lithium battery production, and discloses a raw material crushing device for a lithium ion battery negative electrode material, which is technically characterized by comprising a box body, a material screening ring is rotatably mounted in an inner cavity of the box body, a plurality of groups of uniformly distributed meshes are formed in the surface of the material screening ring, and a grinding roller is arranged in the inner cavity of the box body; a driving mechanism matched with the grinding rollers is arranged in an inner cavity of the box body, the driving mechanism comprises a positioning assembly and a swinging assembly, a control mechanism matched with the screening ring is arranged in the inner cavity of the box body, and the control mechanism comprises a progressive filtering assembly and a hole dredging assembly. The hole dredging assembly comprises a hole dredging brush, a supporting part and a lifting part, the positioning assembly is arranged to be matched with the swing assembly, the grinding roller can be controlled to roll back and forth at a certain angle at the inner bottom of the material screening ring, and the grinding roller can repeatedly extrude and crush raw materials at the inner bottom of the material screening ring.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of lithium battery production, and particularly relates to a raw material crushing device for negative electrode material of lithium ion battery. BACKGROUND

[0002] The negative electrode of a lithium ion battery is made of a paste-like adhesive made by mixing carbon material or non-carbon material, a binder and an additive, which is uniformly coated on both sides of a copper foil, dried and rolled, and the negative electrode material of a lithium ion battery is not a single material but a composite material.

[0003] Graphite is the main material of the negative electrode of a lithium ion battery, and before mixing and processing a plurality of materials, the graphite needs to be crushed into powder.

[0004] At present, the graphite and other raw materials are crushed by relatively rotating two groups of crushing rollers, and the existing crushing method can only crush the raw materials once, and the crushed particles directly fall down, so that the raw materials cannot be repeatedly crushed, the crushing effect is poor, and when the filter screen is used to filter the raw material particles with a large size after crushing, the cohesion between the raw materials is large, which easily causes the mesh to be blocked, so that the filtering and screening effect of the filter screen is poor. SUMMARY

[0005] The present application aims to provide a raw material crushing device for negative electrode material of a lithium ion battery to solve the problems in the background.

[0006] To achieve the above object, the present application provides the following technical scheme.

[0007] The application discloses a raw material crushing device for a lithium ion battery negative material, which comprises a box body, a feeding hopper arranged on the side wall of the box body, a discharging port arranged on the bottom wall of the box body, a screening ring rotatably arranged in the inner cavity of the box body, a plurality of groups of uniformly distributed meshes arranged on the surface of the screening ring, a rolling roller arranged in the inner cavity of the box body, a driving mechanism arranged in the inner cavity of the box body and matched with the rolling roller, the driving mechanism comprising a positioning assembly and a swing assembly, the positioning assembly being connected with the rolling roller and arranged in the inner cavity of the box body, and the positioning assembly being used for controlling the rolling roller to be in a horizontal state at the bottom of the screening ring, the swing assembly being connected with the positioning assembly and arranged in the inner cavity of the box body, and the swing assembly being used for controlling the rolling roller to reciprocatingly roll at the bottom of the screening ring through cooperation with the positioning assembly, a control mechanism arranged in the inner cavity of the box body and matched with the screening ring, the control mechanism comprising a progressive filtering assembly and a porous component, the progressive filtering assembly being connected with the screening ring and used for controlling the screening ring to be intermittently rotated by a certain angle in the inner cavity of the box body, and the porous component comprising a porous brush, a supporting part and a lifting part, the supporting part being connected with the porous brush and arranged at the top of the inner cavity of the box body, and the supporting part being used for controlling a plurality of groups of the porous brushes to be above the screening ring, and the lifting part being connected with the supporting part and arranged at the top of the inner cavity of the box body, and the lifting part being used for controlling the porous brush to reciprocatingly move along the vertical direction through cooperation with the supporting part when the screening ring rotates.

[0008] As a further scheme of the application, the positioning assembly comprises a central shaft rotatably arranged in the inner cavity of the box body, and two groups of vertically arranged vertical plates are fixedly arranged on the surface of the central shaft, and the rolling roller is rotatably arranged at one end of the two groups of vertical plates away from the central shaft.

[0009] As a further scheme of the application, the swing assembly comprises two groups of oppositely arranged fan-shaped toothed discs fixedly arranged on the surface of the central shaft, a rotating column rotatably arranged in the inner cavity of the box body, a fixing disc fixedly arranged on the surface of the rotating column and oppositely arranged with the fan-shaped toothed discs, an arc-shaped transmission rack fixedly arranged on the surface of the fixing disc, and the transmission rack is engaged with the fan-shaped toothed discs, one end of the rotating column extends to the outside of the box body and is connected with a motor, a backing plate is fixedly arranged on the inner side wall of the box body and located outside the fan-shaped toothed discs, a return spring is fixedly arranged on the surface of the backing plate, and the extension end of the return spring is connected with the fan-shaped toothed discs.

[0010] As a further scheme of the application, the progressive filtering assembly comprises an inner ring gear fixedly arranged on the annular inner wall of the screening ring, and the inner ring gear is engaged with the transmission rack, and a limiting part is arranged on the surface of the screening ring and used for controlling the screening ring to keep a relatively static state in the inner cavity of the box body when the transmission rack and the inner ring gear are separated from each other.

[0011] As a further scheme of the present application: the limiting part comprises a plurality of groups of annularly equidistantly distributed first limiting magnetic blocks fixedly installed at two ends of the sieve ring, and a plurality of groups of second limiting magnetic blocks fixedly installed on the inner side wall of the box and matched with the first limiting magnetic blocks.

[0012] As a further scheme of the present application: the supporting part comprises a plurality of groups of guide rods fixedly installed on the inner top wall of the box, the plurality of groups of guide rods are jointly and slidably installed in the vertical direction and have a bearing plate, a bottom plate is fixedly installed at the bottom end of the guide rod, an extrusion spring is fixedly installed on the surface of the bottom plate, the extension end of the extrusion spring is connected with the bottom wall of the bearing plate, and a plurality of groups of porous brushes are uniformly distributed on the bottom wall of the bearing plate.

[0013] As a further scheme of the present application: the lifting part comprises a positioning cavity with both ends penetrating the inside of the bearing plate, and control toothed discs are rotatably installed on the opposite inner side walls of the box, the two groups of control toothed discs are jointly provided with a positioning rod at a position deviated from the center, the positioning rod penetrates the positioning cavity, an outer gear ring is fixedly installed on the surface of the sieve ring, and the outer gear ring is meshingly connected with the control toothed disc.

[0014] As a further scheme of the present application: two groups of blocking rods are fixedly installed on the inner side wall of the box and located on the two sides of the fan-shaped toothed disc.

[0015] As a further scheme of the present application: the two ends of the rolling roller extend to the outside of the vertical plate and are fixedly installed with a guide toothed disc, an arc-shaped guide rack is fixedly installed on the inner side wall of the box, and the guide toothed disc is meshingly connected with the guide rack.

[0016] Compared with the prior art, the present application has the following advantages: through the cooperation of the positioning assembly and the swinging assembly, the rolling roller can be controlled to reciprocally roll at a certain angle at the bottom of the sieve ring, and the rolling roller can repeatedly extrude and crush the raw materials at the bottom of the sieve ring. The problem that the raw materials can only be crushed once in the prior crushing mode and the crushed particles directly fall down, so that the raw materials cannot be repeatedly crushed, is solved.

[0017] Through the cooperation of the progressive filtering assembly and the sieve ring, the sieve ring can be intermittently rotated at a certain angle while the rolling roller is reciprocally rolling, so that the meshes at different positions can be controlled to filter the raw materials in turn, and the filtering effect of the meshes on the raw material particles is effectively improved.

[0018] Through the cooperation of the supporting part and the lifting part, the porous brushes can be controlled to automatically clean the raw materials blocked in the meshes, and the continuous filtering capacity of the meshes on the surface of the sieve ring is effectively improved. The problem that the cohesion between the raw materials is large and the meshes are easily blocked, resulting in poor filtering and screening effect of the filter screen, is solved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a three-dimensional structural schematic view of a raw material crushing device for a lithium ion battery negative electrode material provided in an embodiment of the present application.

[0020] Figure 2 It is a front view structural schematic view of a raw material crushing device for a lithium ion battery negative electrode material provided in an embodiment of the present application.

[0021] Figure 3 It is an internal section view structural schematic view of a box body in a raw material crushing device for a lithium ion battery negative electrode material provided in an embodiment of the present application.

[0022] Figure 4 It is a schematic view of a crushing roller and its connecting structure in a raw material crushing device for a lithium ion battery negative electrode material provided in an embodiment of the present application.

[0023] Figure 5 It is a schematic view of a porous brush and its connecting structure in a raw material crushing device for a lithium ion battery negative electrode material provided in an embodiment of the present application.

[0024] Figure 6 It is a schematic view of a screening ring and its connecting structure in a raw material crushing device for a lithium ion battery negative electrode material provided in an embodiment of the present application.

[0025] Wherein: 1-box body, 11-feeding hopper, 12-discharge port, 2-screening ring, 21-mesh, 3-crushing roller, 4-driving mechanism, 41-positioning assembly, 411-center shaft, 412-vertical plate, 42-oscillating assembly, 421-fan-shaped tooth disc, 422-rotation column, 423-fixed disc, 424-transmission rack, 425-motor, 426-pad plate, 427-return spring, 5-control mechanism, 51-progressive filtering assembly, 511-inner gear ring, 512-limiting part, 5121-first limiting magnetic block, 5122-second limiting magnetic block, 52-porous assembly, 521-porous brush, 522-supporting part, 5221-guide rod, 5222-bearing plate, 5223-bottom plate, 5224-extrusion spring, 523-lifting part, 5231-control tooth disc, 5232-positioning cavity, 5233-positioning rod, 5234-outer gear ring, 6-stop rod. DETAILED DESCRIPTION

[0026] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0027] The specific implementation of the present application is described in detail below in combination with specific embodiments.

[0028] As Figure 1 , Figure 2 , Figure 3As shown, it is a structure view of a raw material crushing device for a lithium ion battery negative electrode material provided by an embodiment of the application, which comprises a box body 1, a feeding hopper 11 is arranged on the side wall of the box body 1, a discharge port 12 is arranged on the bottom wall of the box body 1, a screening ring 2 is rotatably installed in the inner cavity of the box body 1, a plurality of evenly distributed meshes 21 are arranged on the surface of the screening ring 2, a rolling mill 3 is arranged in the inner cavity of the box body 1, a driving mechanism 4 which cooperates with the rolling mill 3 is arranged in the inner cavity of the box body 1, the driving mechanism 4 comprises a positioning assembly 41 and a swing assembly 42, the positioning assembly 41 is located in the inner cavity of the box body 1 and connected with the rolling mill 3, and the positioning assembly 41 is used to control the rolling mill 3 to be in a horizontal state at the bottom of the screening ring 2, the swing assembly 42 is located in the inner cavity of the box body 1 and connected with the positioning assembly 41, and the swing assembly 42 controls the rolling mill 3 to reciprocally roll at the bottom of the screening ring 2 by cooperating with the positioning assembly 41, a control mechanism 5 which cooperates with the screening ring 2 is arranged in the inner cavity of the box body 1, the control mechanism 5 comprises a progressive filtration assembly 51 and a porous assembly 52, the progressive filtration assembly 51 is connected with the screening ring 2, and the progressive filtration assembly 51 is used to control the screening ring 2 to rotate at intervals in the inner cavity of the box body 1 by a certain angle, the porous assembly 52 comprises a porous brush 521, a support part 522 and a lifting part 523, the support part 522 is located at the top of the inner cavity of the box body 1 and connected with the porous brush 521, and the support part 522 is used to control a plurality of porous brushes 521 to be above the screening ring 2, the lifting part 523 is located at the top of the inner cavity of the box body 1 and connected with the support part 522, and when the screening ring 2 rotates, the lifting part 523 controls the porous brush 521 to reciprocally move along the vertical direction by cooperating with the support part 522.

[0029] In use, raw materials are put into the inner cavity of the box body 1 through the feeding hopper 11, and then the raw materials fall to the bottom of the screening ring 2, the swing assembly 42 and the positioning assembly 41 can control the rolling mill 3 to reciprocally roll at the bottom of the screening ring 2 by a certain angle, the rolling mill 3 can efficiently crush the raw materials at the bottom of the screening ring 2 by cooperating with the screening ring 2 when rolling, and the raw material particles with qualified sizes can fall to the bottom of the box body 1 through the meshes 21 on the surface of the screening ring 2 and then be discharged through the discharge port 12 after the raw materials are crushed. The raw material particles with large sizes are left on the surface of the screening ring 2, and the rolling mill 3 can repeatedly crush them.

[0030] The rolling roller 3 rolls back and forth, and the advancing filter assembly 51 controls the screen ring 2 to rotate intermittently by a certain angle in the inner cavity of the box 1, so that different positions of the screen ring 2 are rotated to the lowest position in turn, so that the meshes 21 at different positions on the surface of the screen ring 2 can filter the raw material particles in turn, avoiding the meshes 21 from being blocked to cause poor filtering effect. The meshes 21 after filtering the raw material rotate synchronously, and at this time, the meshes 21 contain a certain amount of blocked raw material particles. While the screen ring 2 rotates intermittently, the lifting part 523 and the supporting part 522 cooperate with each other to control the perforated brush 521 to reciprocate in the vertical direction above the screen ring 2. When the blocked mesh 21 rotates to the highest position of the screen ring 2, the perforated brush 521 can automatically insert into the mesh 21 on the surface of the screen ring 2 when moving downward, and the perforated brush 521 can clean the blocked raw material particles in the mesh 21, so that the blocked raw material particles fall to the bottom of the screen ring 2, and the mesh 21 is in the through state again. When the mesh 21 rotates to the lowest position again, the raw material particles can be efficiently filtered.

[0031] As shown in Figure 2 , Figure 3 , Figure 4 As a preferred embodiment of the present application, the positioning assembly 41 comprises a central shaft 411 rotatably installed in the inner cavity of the box 1, two groups of vertically distributed vertical plates 412 are fixedly installed on the surface of the central shaft 411, and the rolling roller 3 is rotatably installed at one end of the two groups of vertical plates 412 away from the central shaft 411.

[0032] The central shaft 411 supports and positions the vertical plates 412, and the two groups of vertical plates 412 support and position the rolling roller 3 at the bottom of the screen ring 2. In use, the swing assembly 42 controls the central shaft 411 to reciprocate by a certain angle around the axis thereof, and the central shaft 411 and the vertical plates 412 cooperate to drive the rolling roller 3 to reciprocate synchronously at the bottom of the screen ring 2.

[0033] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4As shown in the figure, as a preferred embodiment of the present application, the swing assembly 42 comprises two sets of opposite fan-shaped toothed discs 421 fixedly installed on the surface of the central shaft 411, a rotating column 422 is rotatably installed in the inner cavity of the box 1, a fixed disc 423 is fixedly installed on the surface of the rotating column 422 and oppositely distributed with the fan-shaped toothed discs 421, an arc-shaped transmission rack 424 is fixedly installed on the surface of the fixed disc 423, the transmission rack 424 is engaged with the fan-shaped toothed discs 421, one end of the rotating column 422 extends to the outside of the box 1 and is connected with a motor 425, a backing plate 426 is fixedly installed on the inner side wall of the box 1 and located outside the fan-shaped toothed discs 421, a return spring 427 is fixedly installed on the surface of the backing plate 426, and the telescopic end of the return spring 427 is connected with the fan-shaped toothed discs 421.

[0034] In use, the motor 425 drives the rotating column 422 to rotate and in turn drives the fixed disc 423 to rotate synchronously, the fixed disc 423 drives the transmission rack 424 to rotate synchronously, when the transmission rack 424 contacts the fan-shaped toothed discs 421, the transmission rack 424 is engaged with the fan-shaped toothed discs 421 to drive the fan-shaped toothed discs 421 to rotate to one side, and the fan-shaped toothed discs 421 drive the central shaft 411 to rotate synchronously. When the transmission rack 424 is separated from the fan-shaped toothed discs 421, the transmission rack 424 releases the driving force on the fan-shaped toothed discs 421, and the return spring 427 pushes the fan-shaped toothed discs 421 to reverse rotation to the original position, and the fan-shaped toothed discs 421 drive the central shaft 411 to reverse rotation synchronously. Such a cycle can control the central shaft 411 to rotate back and forth at a certain angle.

[0035] As shown in the figure, Figure 2 , Figure 3 , Figure 6 As shown in the figure, as a preferred embodiment of the present application, the progressive filtering assembly 51 comprises an inner ring gear 511 fixedly installed on the annular inner wall of the sieve ring 2, the inner ring gear 511 is engaged with the transmission rack 424, and the sieve ring 2 is provided with a limiting portion 512 on the surface, when the transmission rack 424 is separated from the inner ring gear 511, the limiting portion 512 is used to control the sieve ring 2 to keep a relatively static state in the inner cavity of the box 1.

[0036] The motor 425 drives the rotating column 422 to rotate and in turn drives the fixed disc 423 to rotate synchronously, the fixed disc 423 drives the transmission rack 424 to rotate synchronously, when the transmission rack 424 rotates to contact the inner ring gear 511, the transmission rack 424 is engaged with the inner ring gear 511 to drive the sieve ring 2 to rotate in the inner cavity of the box 1, after the transmission rack 424 is separated from the inner ring gear 511, the limiting portion 512 controls the sieve ring 2 to stop rotating in the inner cavity of the box 1. Such a cycle can control the sieve ring 2 to rotate at a certain angle in the inner cavity of the box 1 at intervals.

[0037] As shown in the figure, Figure 3 ,Figure 6 As shown in the drawings, as a preferred embodiment of the present application, the limiting part 512 comprises a plurality of groups of annularly equidistantly distributed first limiting magnetic blocks 5121 fixedly installed at both ends of the screening ring 2, and a plurality of groups of second limiting magnetic blocks 5122 fixedly installed on the inner side wall of the box 1 and matched with the first limiting magnetic blocks 5121.

[0038] Initially, the first limiting magnetic blocks 5121 on the surface of the screening ring 2 and the second limiting magnetic blocks 5122 on the inner side wall of the box 1 are matched and connected into a whole, and when the screening ring 2 rotates, the first limiting magnetic blocks 5121 and the second limiting magnetic blocks 5122 are separated from each other, and after the transmission rack 424 and the inner gear ring 511 are separated from each other, the first limiting magnetic blocks 5121 on the surface of the screening ring 2 are connected into a whole with the second limiting magnetic blocks 5122 again through magnetic attraction, and the screening ring 2 is kept in a stationary state again in the inner cavity of the box 1.

[0039] As shown in the drawings, Figure 2 , Figure 3 , Figure 5 As a preferred embodiment of the present application, the supporting part 522 comprises a plurality of groups of guide rods 5221 fixedly installed on the inner top wall of the box 1, a plurality of groups of bearing plates 5222 vertically and slidably installed on the guide rods 5221, a bottom plate 5223 fixedly installed at the bottom end of the guide rod 5221, an extrusion spring 5224 fixedly installed on the surface of the bottom plate 5223, and the extension end of the extrusion spring 5224 connected with the bottom wall of the bearing plate 5222, and a plurality of groups of porous brushes 521 uniformly distributed on the bottom wall of the bearing plate 5222.

[0040] The plurality of groups of guide rods 5221 position the bearing plate 5222, the extrusion spring 5224 applies a pushing force to support the bearing plate 5222, the bearing plate 5222 supports and positions the plurality of groups of porous brushes 521, and when the screening ring 2 rotates, the lifting part 523 controls the bearing plate 5222 to reciprocally move in the vertical direction, and the bearing plate 5222 drives the porous brushes 521 to synchronously reciprocally move in the vertical direction.

[0041] As shown in the drawings, Figure 2 , Figure 3 , Figure 5 , Figure 6 As a preferred embodiment of the present application, the lifting part 523 comprises a positioning cavity 5232 with both ends penetrating through and formed in the bearing plate 5222, control tooth discs 5231 rotatably installed on the opposite inner side walls of the box 1, a positioning rod 5233 disposed at a position deviated from the center of the two groups of control tooth discs 5231, the positioning rod 5233 penetrating out of the positioning cavity 5232, an outer gear ring 5234 fixedly installed on the surface of the screening ring 2, and the outer gear ring 5234 meshingly connected with the control tooth disc 5231.

[0042] When the screening ring 2 rotates, the outer gear ring 5234 rotates synchronously, the outer gear ring 5234 meshes with the control gear plate 5231 to drive the control gear plate 5231 to rotate inside the box 1, the two groups of control gear plates 5231 drive the positioning rods 5233 to rotate synchronously in the vertical plane, and the positioning rods 5233 cooperate with the positioning cavities 5232 to control the bearing plate 5222 to reciprocate in the vertical direction.

[0043] As shown in Figure 2 , Figure 3 As a preferred embodiment of the present application, the inner side wall of the box 1 is fixedly installed with two groups of blocking rods 6 located on the two sides of the fan-shaped gear plate 421.

[0044] The blocking rods 6 can limit the swing amplitude of the fan-shaped gear plate 421, avoiding the large swing amplitude of the fan-shaped gear plate 421 under the action of inertia.

[0045] As a preferred embodiment of the present application, the two ends of the rolling roller 3 extend to the outside of the vertical plate 412 and are fixedly installed with a guide gear plate (not shown in the figure), and the inner side wall of the box 1 is fixedly installed with an arc-shaped guide rack (not shown in the figure), and the guide gear plate is meshed and connected with the guide rack.

[0046] When the rolling roller 2 reciprocates and rotates at the bottom of the screening ring 2, the guide gear plate reciprocates and rotates synchronously, the guide gear plate rolls along the surface of the guide rack, and the rolling roller 2 can stably reciprocate and roll at the bottom of the screening ring 2.

[0047] The working principle of the present application is that: in use, the raw materials are put into the inner cavity of the box 1 through the feeding hopper 11, and the raw materials fall to the bottom of the screening ring 2. The motor 425 drives the rotating column 422 to rotate and synchronously drives the fixed disc 423 to rotate. The fixed disc 423 drives the transmission rack 424 to rotate synchronously. When the transmission rack 424 contacts the fan-shaped toothed disc 421, the transmission rack 424 meshes with the fan-shaped toothed disc 421 to drive the fan-shaped toothed disc 421 to rotate to one side. The fan-shaped toothed disc 421 drives the central shaft 411 to rotate synchronously. When the transmission rack 424 is separated from the fan-shaped toothed disc 421, the transmission rack 424 removes the driving force of the fan-shaped toothed disc 421, and the return spring 427 pushes the fan-shaped toothed disc 421 to reverse rotation to the original position, and the fan-shaped toothed disc 421 drives the central shaft 411 to reverse rotation synchronously. This cycle can control the central shaft 411 to rotate back and forth at a certain angle. The central shaft 411 cooperates with the vertical plate 412 to drive the rolling mill 3 to roll back and forth on the bottom of the screening ring 2. The rolling mill 3 rolls while cooperating with the screening ring 2 to efficiently crush the raw materials on the bottom of the screening ring 2. After the raw materials are crushed, the qualified raw material particles pass through the mesh 21 on the surface of the screening ring 2 and fall to the bottom of the box 1, and then are discharged through the discharge port 12. The larger raw material particles are left on the surface of the screening ring 2, and the rolling mill 3 can repeatedly crush them.

[0048] While the rolling mill 3 is rolling back and forth, the fixed disc 423 drives the transmission rack 424 to rotate synchronously. When the transmission rack 424 rotates to contact the inner ring gear 511, the transmission rack 424 meshes with the inner ring gear 511 to drive the screening ring 2 to rotate in the inner cavity of the box 1. After the transmission rack 424 and the inner ring gear 511 are separated from each other, the first limiting magnetic block 5121 on the surface of the screening ring 2 is again connected with the second limiting magnetic block 5122 as a whole by magnetic attraction, and the screening ring 2 again maintains a stationary state in the inner cavity of the box 1. This cycle can control the screening ring 2 to rotate at a certain angle in the inner cavity of the box 1 at intervals.

[0049] The screening ring 2 rotates at a certain angle in the inner cavity of the box 1 at intervals, so that different positions of the screening ring 2 rotate to the lowest position in turn, so that the mesh 21 on the surface of the screening ring 2 can filter the raw material particles in turn, avoiding the mesh 21 being blocked to cause poor filtering effect. The mesh 21 rotates synchronously after filtering the raw materials, and the mesh 21 contains a certain amount of blocked raw material particles at this time.

[0050] The sieve ring 2 rotates intermittently, and the outer gear ring 5234 rotates synchronously when the sieve ring 2 rotates, the outer gear ring 5234 meshes with the control gear plate 5231 to drive the control gear plate 5231 to rotate inside the box 1, the two groups of control gear plates 5231 drive the positioning rods 5233 to rotate synchronously in the vertical plane, and the positioning rods 5233 cooperate with the positioning cavities 5232 to control the bearing plate 5222 to move reciprocatingly in the vertical direction. The bearing plate 5222 drives the perforated brush 521 to move reciprocatingly in the vertical direction synchronously. When the blocked mesh 21 rotates to the highest position of the sieve ring 2, the perforated brush 521 can automatically insert into the mesh 21 on the surface of the sieve ring 2 when moving downward, the perforated brush 521 can clean the blocked raw material particles in the mesh 21, and the blocked raw material particles are cleaned and fall to the bottom of the sieve ring 2, and the mesh 21 is kept in the through state again. When the mesh 21 rotates to the lowest position again, the raw material particles can be continuously filtered efficiently.

[0051] The preferred embodiments of the present application are described in detail above, but the present application is not limited to the above-described embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the purpose of the present application.

Claims

1. A raw material crushing device for lithium-ion battery negative electrode materials, comprising a box body, a feeding funnel provided on the side wall of the box body, and a discharge port provided on the bottom wall of the box body, characterized in that: A screening ring is rotatably installed in the inner cavity of the box, and a plurality of groups of evenly distributed meshes are provided on the surface of the screening ring. A rolling roller is provided in the inner cavity of the box; The inner cavity of the box is provided with a driving mechanism that cooperates with the rolling roller, and the driving mechanism includes a positioning component and a swing component; The positioning assembly is located in the inner cavity of the box and is connected to the rolling roller. The positioning assembly is used to control the rolling roller to be in a horizontal state at the bottom of the screening ring. The swing assembly is located in the inner cavity of the box and is connected to the positioning assembly. The swing assembly controls the rolling roller to roll back and forth at the bottom of the screening ring by cooperating with the positioning assembly. The inner cavity of the box is provided with a control mechanism that cooperates with the screening ring, and the control mechanism includes a progressive filtering component and a pore-draining component; The progressive filter assembly is connected to the sieving ring, and the progressive filter assembly is used to control the sieving ring to intermittently rotate a certain angle in the box cavity; The pore-draining assembly includes a pore-draining brush, a supporting portion, and a lifting portion; The support part is located at the top of the box body and is connected to the pore-draining brush. The support part is used to control multiple groups of pore-draining brushes to be above the screening ring. The lifting part is located at the top of the box body and is connected to the support part. When the screening ring rotates, the lifting part controls the pore-draining brush to move back and forth in the vertical direction by cooperating with the support part.

2. The raw material crushing device for lithium-ion battery negative electrode materials according to claim 1, characterized in that: The positioning assembly includes a central shaft rotatably mounted in the inner cavity of the box, two sets of relatively distributed vertical plates are fixedly mounted on the surface of the central shaft, and the rolling roller is rotatably mounted on one end of the two sets of vertical plates away from the central shaft.

3. The raw material crushing device for lithium-ion battery negative electrode materials according to claim 2, characterized in that: The swing assembly includes two groups of relatively distributed fan-shaped toothed discs fixedly mounted on the surface of the central axis, a rotating column is rotatably mounted in the inner cavity of the box, a fixed disc distributed relatively to the fan-shaped toothed disc is fixedly mounted on the surface of the rotating column, an arc-shaped transmission rack is fixedly mounted on the surface of the fixed disc, the transmission rack is engaged with the fan-shaped toothed disc, one end of the rotating column extends to the outside of the box and is connected to a motor, a pad located on the outside of the fan-shaped toothed disc is fixedly mounted on the inner inner wall of the box, a return spring is fixedly mounted on the surface of the pad, and the telescopic end of the return spring is connected to the fan-shaped toothed disc.

4. The raw material crushing device for lithium-ion battery negative electrode materials according to claim 3, characterized in that: The progressive filtering assembly includes an inner gear ring fixedly mounted on the annular inner wall of the sieve ring, the inner gear ring is engaged with the transmission rack, and a limiting portion is provided on the surface of the sieve ring. When the transmission rack and the inner gear ring are separated from each other, the limiting portion is used to control the sieve ring to maintain a relatively stationary state in the inner cavity of the box.

5. The raw material crushing device for lithium-ion battery negative electrode materials according to claim 4, characterized in that: The limiting part includes multiple groups of first limiting magnetic blocks distributed in a ring with equal intervals and fixedly installed at both ends of the screening ring, and multiple groups of second limiting magnetic blocks that cooperate with the first limiting magnetic blocks are fixedly installed on the inner wall of the box.

6. The raw material crushing device for lithium-ion battery negative electrode materials according to claim 1, characterized in that: The support part includes multiple groups of guide rods fixedly installed on the top wall of the box body, and the multiple groups of guide rods are slidably installed together with a supporting plate in the vertical direction. The bottom end of the guide rod is fixedly installed with a bottom plate, and the surface of the bottom plate is fixedly installed with an extrusion spring. The telescopic end of the extrusion spring is connected to the bottom wall of the supporting plate, and multiple groups of pore-drilling brushes are evenly distributed on the bottom wall of the supporting plate.

7. The raw material crushing device for lithium-ion battery negative electrode materials according to claim 6, characterized in that: The lifting part includes a positioning cavity with two ends through which is opened inside the carrying plate, and the two opposite inner side walls of the box body are respectively rotatably mounted with control gear discs, and a positioning rod is commonly provided at a position deviating from the center of the circle of the two groups of control gear discs, and the positioning rod passes through the positioning cavity, and an outer gear ring is fixedly mounted on the surface of the screening ring, and the outer gear ring is meshed and connected with the control gear disc.

8. The raw material crushing device for lithium-ion battery negative electrode materials according to claim 3, characterized in that: Two groups of baffle bars are fixedly installed on the inner wall of the box body and are respectively located on both sides of the fan-shaped gear disk.

9. The raw material crushing device for lithium-ion battery negative electrode materials according to claim 2, characterized in that: Both ends of the rolling roller extend to the outside of the vertical plate and are fixedly mounted with guide gear discs. An arc-shaped guide rack is fixedly mounted on the inner side wall of the box body. The guide gear disc is meshed and connected with the guide rack.

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