Multi-crushing equipment for graphite negative electrode material of lithium battery

Abstract

The utility model discloses multiple crushing equipment for a graphite cathode material of a lithium battery, which comprises a crushing bin, a feeding hopper is arranged on one side of the crushing bin, a crushing device is arranged at the joint of the feeding hopper and the crushing bin, a grinding device is arranged in the crushing bin, and the grinding device is arranged below the crushing device; the crushing device comprises an upper crushing roller and a lower crushing roller, the upper crushing roller and the lower crushing roller rotate and are vertically distributed on the inner wall of the crushing bin up and down, and grinding teeth meshed with each other are uniformly distributed on the upper crushing roller and the lower crushing roller; the grinding device comprises a rotating disc and a grinding hammer, a grinding cavity is formed in the smashing bin, and the rotating disc is rotatably installed in the grinding cavity. The utility model belongs to the technical field of crushing equipment, and particularly provides multiple crushing equipment for a graphite cathode material of a lithium battery, which is used for solving the problems of poor crushing effect and insufficient crushing force of a single-layer crushing blade.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of crushing equipment, and particularly relates to a lithium battery graphite negative material multiple crushing equipment. BACKGROUND

[0002] Lithium battery is a kind of battery by lithium metal or lithium alloy as positive and negative electrode material, using non-aqueous electrolyte solution, lithium battery negative material usually adopts conductive graphite etc., and the conductive graphite used in lithium battery needs to be crushed first in production and processing.

[0003] The existing graphite crushing equipment generally vertically feeds from the upper side, and then the graphite raw material is crushed by the crushing blade driven by the motor, and this crushing mode not only makes the crushing effect of graphite poor, but also only adopts a crushing structure, and the crushing force of graphite material is not enough, and the poor crushing effect of conductive graphite will affect the subsequent powder grinding step, thereby reducing the production efficiency of conductive graphite. UTILITY MODEL CONTENT

[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a lithium battery graphite negative material multiple crushing equipment, which is used to solve the problems of poor crushing effect and insufficient crushing force of single-layer crushing blade.

[0005] The technical scheme adopted by the present application is as follows:

[0006] The utility model provides a kind of lithium battery graphite negative material multiple crushing equipment, including crushing bin, the upper and lower sides of the crushing bin are respectively provided with inlet and outlet;

[0007] The side of the crushing bin is provided with a feed hopper, a crushing device is provided at the connection between the feed hopper and the crushing bin, and a grinding device is provided inside the crushing bin, and the grinding device is arranged below the crushing device;

[0008] The crushing device includes upper crushing roller and lower crushing roller, the upper crushing roller and the lower crushing roller are rotatable and vertically distributed on the inner wall of the crushing bin, and the upper crushing roller and the lower crushing roller are evenly provided with intermeshing crushing teeth, and the crushing teeth on the upper crushing roller and the lower crushing roller are arranged in a staggered manner;

[0009] The grinding device includes a turntable and a grinding hammer, the crushing bin is provided with a grinding cavity, the turntable is rotatably installed in the grinding cavity, and the grinding hammer is provided with multiple groups and is evenly distributed and installed on the outer periphery of the turntable, the grinding hammer is used for grinding and crushing the crushed material, and the grinding device further includes a grinding screen, the grinding screen is in an arc structure arched downward, and the grinding screen is evenly provided with screen holes.

[0010] Further, the feeding port is arranged at one side end of the top of the crushing bin, and the communication part of the feeding hopper and the feeding port forms a feeding slope with a certain inclination angle and inclined downward, the inclination angle makes the material gradually accelerate downward along the slope under the action of gravity, which helps to reduce the impact and collision of the material during falling, helps to reduce the generation of dust, and the material particles can be more uniformly distributed.

[0011] Further, the top of the feeding hopper is provided with a baffle above the feeding port, the feeding port is provided with a limiting plate above the upper crushing roller and below the lower crushing roller, respectively, the limiting plate is engaged with the rolling teeth, and the feeding port is located above the engagement part of the upper crushing roller and the lower crushing roller.

[0012] Further, the crushing bin comprises an upper bin and a lower bin connected, and the contact positions of the upper bin and the lower bin are respectively provided with mounting seats, and a fixing piece is arranged between the mounting seats for fixed connection.

[0013] The beneficial effects obtained by the above structure are as follows:

[0014] By sequentially arranging the crushing device and the grinding device, the material is crushed into smaller particles and then rolled, which is more efficient for subsequent processing, enhances the uniformity of crushing, improves the crushing effect, and the graphite material is first crushed, which can also reduce the wear and impact of the grinding device and prolong the service life of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a whole structure schematic view of a lithium battery graphite negative electrode material multi-crushing equipment provided by the present scheme;

[0016] Figure 2 It is another angle schematic view of a lithium battery graphite negative electrode material multi-crushing equipment provided by the present scheme;

[0017] Figure 3 It is an internal structure schematic view provided by the present embodiment;

[0018] Figure 4 It is a partial structure schematic view of the crushing device in the present scheme.

[0019] The meanings of the reference signs in the drawings are as follows:

[0020] 1, crushing bin, 2, feeding hopper, 3, crushing device, 4, grinding device;

[0021] 11, feeding port, 12, discharge port, 13, discharge pipe, 14, upper bin, 15, lower bin, 16, mounting seat;

[0022] 21, feeding slope, 22, baffle;

[0023] 31, upper pulverizing roller, 32, lower pulverizing roller, 33, crushing teeth, 34, motor one, 35, gear one, 36, gear two, 37, crushing teeth;

[0024] 41, rotating disc, 42, grinding hammer, 43, grinding screen, 44, motor two. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described in combination with the drawings in the embodiments of the utility model.

[0026] Embodiment 1

[0027] Please refer to Figure 1 and Figure 2 , the embodiment provides a kind of multiple pulverizing equipment of graphite negative electrode material of lithium battery, including pulverizing bin 1, the upper and lower sides of the pulverizing bin 1 are equipped with feed inlet 11 and discharge port 12 respectively, one side of the pulverizing bin 1 is equipped with feed hopper 2, the connecting portion of the feed hopper 2 and the pulverizing bin 1 is equipped with pulverizing device 3, the inside of the pulverizing bin 1 is equipped with grinding device 4, and the grinding device 4 is below the pulverizing device 3.

[0028] As shown in Figure 3 , the pulverizing device 3 includes upper pulverizing roller 31 and lower pulverizing roller 32, and the upper pulverizing roller 31 and the lower pulverizing roller 32 are vertically distributed on the inner wall of the pulverizing bin 1 in rotation, and the upper pulverizing roller 31 and the lower pulverizing roller 32 are evenly provided with crushing teeth 33 that are engaged with each other, and the crushing teeth 33 on the upper pulverizing roller 31 and the lower pulverizing roller 32 are arranged in a staggered manner.

[0029] As shown in Figure 2 and Figure 4 , the outside of the pulverizing bin 1 is provided with motor one 34, the outside of the pulverizing bin 1 is coaxially provided with gear one 35 about the upper pulverizing roller 31, the outside of the pulverizing bin 1 is coaxially provided with gear two 36 about the lower pulverizing roller 32, and the gear two 36 is engaged with the gear one 35, and the output shaft of the motor one 34 is located at the center of the gear one 35.

[0030] When using the structure, the output of the motor one 34 drives the gear one 35 to rotate, so that the upper pulverizing roller 31 rotates, the gear one 35 is engaged with the gear two 36 to drive the lower pulverizing roller 32 to rotate, the upper pulverizing roller 31 and the lower pulverizing roller 32 are evenly provided with crushing teeth 33 that are engaged with each other and arranged in a staggered manner, and the crushing teeth 33 of the upper pulverizing roller 31 and the lower pulverizing roller 32 are used to preliminarily pulverize the graphite material after feeding.

[0031] As shown in Figure 1 and Figure 3As shown, the grinding device 4 includes a rotating disc 41 and grinding hammers 42, the crushing bin 1 is provided with a grinding cavity, the rotating disc 41 is rotatably installed in the grinding cavity, and the grinding hammers 42 are provided in multiple groups and uniformly distributed and installed on the outer periphery of the rotating disc 41. The grinding hammers 42 are used for grinding and crushing the crushed material, and three groups of grinding hammers 42 are uniformly arranged on the outer periphery of the rotating disc 41. A grinding screen 43 is further arranged below the rotating disc 41, the grinding screen 43 has an arc structure arched downward, and the grinding screen 43 is uniformly provided with screen holes. In the rotating process of the grinding hammers 42, the graphite material in the form of small particles after preliminary crushing contacts the grinding screen 43, so as to perform further grinding and crushing work, and the graphite material meeting the particle size is discharged into the discharge pipe 13 from the screen holes.

[0032] The crushing bin 1 is provided with a motor two 44 outside, and the output shaft of the motor two 44 is connected with the center of the rotating disc 41. The discharge port 12 is arranged below the grinding screen 43, the discharge port 12 is in the form of a funnel, and the discharge port 12 is provided with a discharge pipe 13 extending outward relative to the crushing bin 1.

[0033] In use of the structure, the motor two 44 drives the rotating disc 41 to rotate, so as to drive the rotation of the grinding hammers 42. Through the sequentially arranged crushing device 3 and grinding device 4, the material is crushed into smaller particles and then rolled, which is more efficient for subsequent processing, enhances the uniformity of crushing, improves the crushing effect, and reduces the wear and impact of the graphite material on the grinding device 4, thereby prolonging the service life of the equipment.

[0034] As a preferred embodiment:

[0035] The feeding port 11 is arranged at one side end of the top of the crushing bin 1, and the communication part between the feeding hopper 2 and the feeding port 11 forms a feeding slope 21 with a certain inclination angle and inclined downward. The inclination angle makes the material gradually accelerate downward along the slope under the action of gravity, which helps to reduce the impact and collision of the material in the falling process, helps to reduce the generation of dust, and helps the material particles to be more uniformly distributed.

[0036] As a preferred embodiment:

[0037] The top of the feeding hopper 2 is provided with a baffle 22 above the feeding port 11, the feeding port 11 is provided with a limiting plate above the upper crushing roller 31 and below the lower crushing roller 32, respectively, the limiting plate is engaged with the rolling teeth 33, and the feeding port 11 is located above the engagement position of the upper crushing roller 31 and the lower crushing roller 32.

[0038] As a preferred embodiment:

[0039] As a preferred scheme, the pulverizing bin 1 comprises an upper bin 14 and a lower bin 15 connected with each other, and the upper bin 14 and the lower bin 15 are respectively provided with mounting seats 16 at the contact positions, and a fixing member is arranged between the mounting seats 16 to be fixedly connected, so that the internal structure is convenient to overhaul.

[0040] It should be noted that although the embodiments of the utility model have been shown and described, for those skilled in the art, similar structural modes and embodiments to the technical scheme can be designed without creativity without departing from the creative purpose of the utility model, and all should belong to the protection scope of the utility model.

Claims

1. A multi-stage pulverization device for graphite anode materials for lithium batteries, comprising a pulverization chamber (1), wherein the pulverization chamber (1) is provided with an inlet (11) and an outlet (12) on its upper and lower sides respectively, characterized in that: A feeding hopper (2) is installed on one side of the crushing chamber (1), and a crushing device (3) is provided at the connection between the feeding hopper (2) and the crushing chamber (1). A grinding device (4) is provided inside the crushing chamber (1), and the grinding device (4) is located below the crushing device (3). The crushing device (3) includes an upper crushing roller (31) and a lower crushing roller (32). The upper crushing roller (31) and the lower crushing roller (32) rotate and are vertically distributed on the inner wall of the crushing chamber (1). The upper crushing roller (31) and the lower crushing roller (32) are evenly distributed with intermeshing grinding teeth (33). The grinding teeth (33) on the upper crushing roller (31) and the lower crushing roller (32) are arranged in an alternating pattern. The grinding device (4) includes a turntable (41) and grinding hammers (42). The grinding chamber (1) is provided with a grinding cavity. The turntable (41) is rotatably installed in the grinding cavity. The grinding hammers (42) are provided in multiple sets and are evenly distributed on the outer periphery of the turntable (41). The grinding hammers (42) are used to grind and crush the crushed material.

2. The lithium battery graphite anode material multi-stage crushing equipment according to claim 1, characterized in that: The grinding device (4) also includes a grinding sieve (43), which has a downward-arched arc structure and is provided with uniformly spaced sieve holes.

3. The multi-stage pulverization equipment for lithium battery graphite anode materials according to claim 1, characterized in that: The feed inlet (11) is located at the top side of the crushing chamber (1), and the feed hopper (2) and the feed inlet (11) form a feed slope (21) with a certain inclination angle and inclined downward.

4. The multi-stage pulverization equipment for lithium battery graphite anode materials according to claim 1, characterized in that: The outside of the crushing chamber (1) is provided with a motor (34), the upper crushing roller (31) is provided with a gear (35) coaxially with the outside of the crushing chamber (1), the lower crushing roller (32) is provided with a gear (36) coaxially with the outside of the crushing chamber (1) and meshes with the gear (35), and the output shaft of the motor (34) is located at the center of the gear (35).

5. The multi-stage pulverization equipment for lithium battery graphite anode materials according to claim 1, characterized in that: The outside of the crushing chamber (1) is equipped with a second motor (44), and the output shaft of the second motor (44) is connected to the center of the turntable (41).

6. The multi-stage pulverization equipment for lithium battery graphite anode materials according to claim 3, characterized in that: The top of the feed hopper (2) is provided with a baffle (22) above the feed inlet (11), and the feed inlet (11) is provided with a limiting plate above the upper crushing roller (31). The feed inlet (11) is located above the meshing point of the upper crushing roller (31) and the lower crushing roller (32).

7. The multi-stage pulverization equipment for lithium battery graphite anode materials according to claim 2, characterized in that: The discharge port (12) is located below the grinding screen (43). The discharge port (12) is funnel-shaped and has a discharge pipe (13) extending outward from the crushing chamber (1).

8. The multi-stage pulverization equipment for lithium battery graphite anode materials according to claim 1, characterized in that: The crushing chamber (1) includes an upper chamber (14) and a lower chamber (15) connected to each other. The upper chamber (14) and the lower chamber (15) are respectively provided with mounting seats (16) at their contact positions, and a fixing member is provided between the upper and lower mounting seats (16) for fixed connection.

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