A drum crusher for graphite negative electrode

Abstract

The utility model relates to a roller crusher for graphite negative electrode, including a crusher shell, a feed hopper is arranged on the top of the crusher shell, a collection box and a waste box are arranged on the bottom, a first crushing and screening mechanism and a second crushing and screening mechanism are arranged in the crusher shell, the first crushing and screening mechanism and the second crushing and screening mechanism are staggered in the vertical direction, a conveyor belt is arranged below the feed hopper, the conveyor belt is located between the feed hopper and the first crushing and screening mechanism, and an air guide mechanism is arranged on the side opposite to the waste box inside the collection box. The utility model can prevent powdered materials from adhering to the gap of the roller during the preparation of graphite negative electrode materials, and can also produce as many finished products as possible when the materials are put in once, and ensure the consistency of the particle size of the finished products.

Description

Technical Field

[0001] The utility model relates to the technical field of pulverizers, in particular to a roller pulverizer for graphite negative electrodes. Background Art

[0002] The drum crusher is a commonly used crushing equipment in material crushing. The motor drives the rotating roller to crush the input material. In the prior art, the drum crusher mainly includes a feed port, a pair of rollers, a motor, a screen, a discharge port, etc. The material enters from the feed port, is put into the middle of the roller and crushed by extrusion, and the crushed material falls into the screen below. The screen is driven by the motor to screen out the material that meets the size requirements through vibration screening, and the material that does not meet the size requirements is collected and put back into the feed port for crushing again.

[0003] In the preparation process of graphite negative electrode materials, a drum crusher is needed. However, the materials for preparing graphite negative electrode materials are in powder form. They are easy to adhere to the gaps in the drum during entering the drum crusher and are difficult to be completely crushed. Moreover, when the materials are input, they are generally only crushed and screened once. Not many finished products can be produced from inputting materials once, and more waste will be generated, which needs to be crushed again, resulting in low production efficiency.

[0004] Chinese patent CN217120380U discloses a water treatment agent crushing and screening device, which includes a bracket, the upper end outer surface of the bracket is provided with a sealed screening device for placing powder scattering, the lower end of the sealed screening device is provided with a discharge pipe, the upper end outer surface of the sealed screening device is fixedly installed with a connecting seat, and the upper end outer surface of the connecting seat is provided with a double-roll crushing device for improving crushing efficiency. Another Chinese patent CN215140399U discloses a lithium battery negative electrode graphite raw material crushing device, which includes a first crushing roller and a second crushing roller, the crushing motor drives the crushing roller gear to rotate through a first transmission belt, so that the crushing roller gear rotates and the first crushing roller rotates synchronously at the same time, the crushing motor drives the driving gear to rotate through the second transmission belt, the driving gear and the driven gear are meshed, and then the driven gear is driven to rotate through the driving gear, and finally the second crushing roller is driven to rotate synchronously. The crushing devices in the above two patents put the materials directly into the middle of the roller when feeding the materials. The powdered materials are easy to adhere to the gap of the roller, and only one crushing and screening is performed. After feeding the materials once, the output of finished products is small and the waste is large. The waste needs to be crushed again, and the production efficiency is low.

[0005] Therefore, how to prevent the material from adhering to the gap between the drums when feeding the material and to produce as many finished products as possible when feeding the material once and improve the production efficiency has become a technical problem to be solved. Utility Model Content

[0006] The utility model aims to provide a roller crusher for graphite negative electrode to solve the deficiencies in the prior art. The technical problem to be solved by the utility model is achieved through the following technical solutions.

[0007] A drum crusher for graphite negative electrode comprises a crusher shell, a feed hopper is arranged on the top of the crusher shell, and a collection box and a waste box are arranged on the bottom. A first crushing and screening mechanism and a second crushing and screening mechanism are arranged in the crusher shell, and the first crushing and screening mechanism and the second crushing and screening mechanism are staggered in the vertical direction. A conveyor belt is arranged below the feed hopper, and the conveyor belt is located between the feed hopper and the first crushing and screening mechanism. An air guide mechanism is arranged on the side of the collection box opposite to the waste box.

[0008] Preferably, a conveyor belt motor is fixedly provided on the side of the pulverizer housing, and the conveyor belt motor drives the conveyor belt.

[0009] Preferably, the first crushing and screening mechanism includes a pair of large rollers and a large vibrating screen, wherein the large vibrating screen is located below the large rollers, and a large vibrating screen motor is fixedly provided on the side of the crusher shell, and the large vibrating screen motor drives the large vibrating screen to vibrate.

[0010] Preferably, the end of the conveyor belt is located obliquely above one of the large rollers, and the end of the conveyor belt is fixed to the upper pulverizer casing through a conveyor belt bracket.

[0011] Preferably, the second crushing and screening mechanism includes a pair of small rollers and a small vibrating screen, wherein the small vibrating screen is located below the small roller, one end of the small vibrating screen is connected to a small vibrating screen motor, and the small vibrating screen is driven by the small vibrating screen motor.

[0012] Preferably, a large vibrating screen material guide plate is provided at the end of the large vibrating screen, and the end of the large vibrating screen material guide plate is located obliquely above one of the small rollers.

[0013] Preferably, a partition is provided between the end of the large vibrating screen and one end of the small vibrating screen connected to the small vibrating screen motor, and the small vibrating screen motor is fixedly mounted on the partition.

[0014] Preferably, a small vibrating screen material guide plate is provided at the end of the small vibrating screen, and the waste box is provided below the small vibrating screen material guide plate.

[0015] Preferably, the crusher casing below the large vibrating screen and the small vibrating screen is inclined toward the inside of the casing.

[0016] Preferably, the mesh sizes of the large vibrating screen and the small vibrating screen are the same.

[0017] Preferably, the air guiding mechanism is a negative pressure fan.

[0018] The utility model adopts two-stage crushing and screening, which can crush the material twice respectively, and can produce as many finished products as possible in one crushing process, thereby improving the crushing efficiency. A vibrating screen is set in each stage, so that the finished product can be screened out in time, preventing the material from being over-crushed, and ensuring the consistency of the finished product particle size. The end of the conveyor belt and the end of the large vibrating screen guide plate are set obliquely above the roller, so that the material will not be sucked into the gap between the two rollers when it is put into the roller, effectively preventing the material from sticking, and is particularly suitable for the crushing of powdered materials. The outer shell below the two vibrating screens is set to an inwardly inclined shape, so that the screened material can be more smoothly collected into the material box to prevent material accumulation.

[0019] The utility model provides a roller crusher for graphite negative electrode. Through the above improvements, the material can be prevented from adhering to the roller gap during the preparation of the graphite negative electrode material, and as many finished products as possible can be produced when the material is put in once, and the consistency of the particle size of the finished products is ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of the drum crusher of the utility model;

[0021] The reference numerals in the accompanying drawings are: 1. crusher housing, 2. feed hopper, 3. collection box, 4. negative pressure fan, 5. conveyor belt motor, 6. conveyor belt, 7. large roller, 8. conveyor belt bracket, 9. large vibrating screen motor, 10. large vibrating screen, 11. large vibrating screen guide plate, 12. partition, 13. small roller, 14. small vibrating screen motor; 15. small vibrating screen, 16. small vibrating screen guide plate, 17. waste box. DETAILED DESCRIPTION

[0022] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0023] like Figure 1 As shown, a drum crusher for graphite negative electrode comprises a crusher shell 1, a feed hopper 2 is arranged on the top of the crusher shell 1, and a collection box 3 and a waste box 17 are arranged on the bottom. A first crushing and screening mechanism and a second crushing and screening mechanism are arranged in the crusher shell 1, and the first crushing and screening mechanism and the second crushing and screening mechanism are staggered in the vertical direction. A conveyor belt 6 is arranged below the feed hopper 2, and the conveyor belt 6 is located between the feed hopper 2 and the first crushing and screening mechanism. An air guide mechanism is provided on the side of the collection box 3 opposite to the waste box 17.

[0024] The utility model adopts a two-stage crushing and screening mechanism consisting of a first crushing and screening mechanism and a second crushing and screening mechanism, which can crush the material twice respectively, can produce as many finished products as possible in one crushing process, and improve the crushing efficiency.

[0025] Furthermore, a conveyor belt motor 5 is fixedly provided on the side of the pulverizer housing 1 , and the conveyor belt motor 5 drives the conveyor belt 6 .

[0026] Furthermore, the first crushing and screening mechanism includes a pair of large rollers 7 and a large vibrating screen 10, wherein the large vibrating screen 10 is located below the large rollers 7, and a large vibrating screen motor 9 is fixedly provided on the side of the crusher housing 1, and the large vibrating screen motor 9 drives the large vibrating screen 10 to vibrate.

[0027] When the material passes through the first crushing and screening mechanism, the finished products that meet the product size requirements will be collected into the aggregate box through the large vibrating screen, and the products that do not meet the particle size requirements will continue to remain on the large vibrating screen waiting for the next step of processing.

[0028] Furthermore, the end of the conveyor belt 6 is located obliquely above one of the large rollers 7 , and the end of the conveyor belt 6 is fixed to the upper pulverizer housing 1 through a conveyor belt bracket 8 .

[0029] The end of the conveyor belt is set obliquely above the large roller, so that the material will not be sucked into the gap between the two rollers when it is thrown into the large roller, preventing the material from sticking.

[0030] Furthermore, the second crushing and screening mechanism includes a pair of small rollers 13 and a small vibrating screen 15 , wherein the small vibrating screen 15 is located below the small rollers 13 , one end of the small vibrating screen 15 is connected to a small vibrating screen motor 14 , and the small vibrating screen 15 is driven by the small vibrating screen motor 14 .

[0031] Furthermore, a large vibrating screen material guide plate 11 is provided at the end of the large vibrating screen 10 , and the end of the large vibrating screen material guide plate 11 is located obliquely above one of the small rollers 13 .

[0032] The materials on the large vibrating screen that do not meet the particle size requirements will enter the small roller of the second crushing and screening mechanism through the large vibrating screen guide plate for further crushing. The crushed materials will fall into the small vibrating screen below, and the materials that meet the product particle size requirements will pass through the small vibrating screen and fall into the collection box below. The end of the large vibrating screen guide plate is set obliquely above the roller, so that the materials on the large vibrating screen will not be sucked into the gap between the two rollers when they are put into the small roller, preventing the materials from sticking.

[0033] Furthermore, a partition plate 12 is provided between the end of the large vibrating screen 10 and one end of the small vibrating screen 15 connected to the small vibrating screen motor 14 , and the small vibrating screen motor 14 is fixedly mounted on the partition plate 12 .

[0034] The setting of the partition can prevent the material falling from the large vibrating screen guide plate from entering the collecting box and affecting the consistency of the product particle size.

[0035] Furthermore, a small vibrating screen material guide plate 16 is provided at the end of the small vibrating screen 15 , and the waste material box 17 is provided below the small vibrating screen material guide plate 16 .

[0036] After two levels of crushing and screening, the materials that do not meet the product particle size requirements will be collected in the waste box and put back into the feed hopper for a new round of crushing and screening.

[0037] Furthermore, the pulverizer housing 1 below the large vibrating screen 10 and the small vibrating screen 15 is tilted toward the inside of the housing.

[0038] Preferably, the mesh sizes of the large vibrating screen 10 and the small vibrating screen 15 are the same.

[0039] The outer shells under the two vibrating screens are set to be inwardly inclined, so that the screened materials can be collected into the material box more smoothly to prevent material accumulation. At the same time, the screen holes of the two vibrating screens are the same size, ensuring the consistent particle size of the finished products in the collection box.

[0040] Furthermore, the air guiding mechanism is a negative pressure fan 4.

[0041] The working process of the utility model is as follows: materials are put into the feed hopper and transported to the first crushing and screening mechanism via a conveyor belt; the large roller of the first crushing and screening mechanism crushes the materials; the crushed materials are screened by a large vibrating screen; the materials that meet the product particle size requirements fall into the aggregate box below, and the materials that do not meet the product particle size requirements enter the second crushing and screening mechanism via a guide plate of the large vibrating screen; the small roller of the second crushing and screening mechanism continues to crush the materials; the crushed materials are screened by a small vibrating screen; the materials that meet the product particle size requirements fall into the aggregate box below, and the materials that do not meet the product particle size requirements enter the waste box via a guide plate of the small vibrating screen, and are put back into the feed hopper for a new round of crushing and screening; the finished products in the aggregate box are sucked into the separator by a negative pressure fan for the next operation.

[0042] It should be noted that the above detailed descriptions are exemplary and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the art to which the present application belongs.

[0043] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments described in the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0044] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0045] In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units that are not explicitly listed or inherent to these processes, methods, products, or apparatuses.

[0046] For ease of description, spatially relative terms, such as "above", "above", "on the upper surface of", "above", etc., may be used herein to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways, such as rotated 90 degrees or in other orientations, and the spatially relative descriptions used herein are interpreted accordingly.

[0047] In the above detailed description, reference is made to the accompanying drawings, which form a part of this document. In the accompanying drawings, similar symbols typically identify similar components unless the context indicates otherwise. The illustrated embodiments described in the detailed description, drawings, and claims are not meant to be limiting. Other embodiments may be used, and other changes may be made, without departing from the spirit or scope of the subject matter presented herein.

[0048] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A roller mill for graphite negative electrode, characterized in that: The invention comprises a pulverizer housing (1), wherein a feed hopper (2) is arranged at the top of the pulverizer housing (1), and a collection box (3) and a waste box (17) are arranged at the bottom. A first pulverizing and screening mechanism and a second pulverizing and screening mechanism are arranged inside the pulverizer housing (1), and the first pulverizing and screening mechanism and the second pulverizing and screening mechanism are arranged staggered in the vertical direction. A conveyor belt (6) is arranged below the feed hopper (2), and the conveyor belt (6) is located between the feed hopper (2) and the first pulverizing and screening mechanism. An air guide mechanism is arranged inside the collection box (3) on the side opposite to the waste box (17).

2. The roller mill for graphite negative electrode according to claim 1, characterized in that: A conveyor belt motor (5) is fixedly provided on the side of the pulverizer housing (1), and the conveyor belt motor (5) drives the conveyor belt (6).

3. The roller mill for graphite negative electrode according to claim 1, characterized in that: The first crushing and screening mechanism comprises a pair of large rollers (7) and a large vibrating screen (10), wherein the large vibrating screen (10) is located below the large rollers (7), and a large vibrating screen motor (9) is fixedly provided on the side of the crusher housing (1), wherein the large vibrating screen motor (9) drives the large vibrating screen (10) to vibrate.

4. The roller mill for graphite negative electrode according to claim 3, characterized in that: The end of the conveyor belt (6) is located obliquely above one of the large rollers (7), and the end of the conveyor belt (6) is fixed to the upper pulverizer housing (1) via a conveyor belt bracket (8).

5. The roller mill for graphite negative electrode according to claim 4, characterized in that: The second crushing and screening mechanism comprises a pair of small rollers (13) and a small vibrating screen (15), wherein the small vibrating screen (15) is located below the small rollers (13), one end of the small vibrating screen (15) is connected to a small vibrating screen motor (14), and the small vibrating screen (15) is driven by the small vibrating screen motor (14).

6. The roller mill for graphite negative electrode according to claim 5, characterized in that: A large vibrating screen material guide plate (11) is provided at the end of the large vibrating screen (10), and the end of the large vibrating screen material guide plate (11) is located obliquely above one of the small rollers (13).

7. The roller mill for graphite negative electrode according to claim 5, characterized in that: A partition plate (12) is provided between the end of the large vibrating screen (10) and one end of the small vibrating screen (15) connected to the small vibrating screen motor (14), and the small vibrating screen motor (14) is fixedly mounted on the partition plate (12).

8. The roller mill for graphite negative electrode according to claim 5, characterized in that: A small vibrating screen material guide plate (16) is provided at the end of the small vibrating screen (15), and the waste material box (17) is provided below the small vibrating screen material guide plate (16).

9. The roller mill for graphite negative electrode according to claim 5, characterized in that: The pulverizer housing (1) below the large vibrating screen (10) and the small vibrating screen (15) is arranged to be inclined toward the inside of the housing.

10. The roller mill for graphite negative electrode according to claim 5, characterized in that: The mesh sizes of the large vibrating screen (10) and the small vibrating screen (15) are the same.

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