Mixing and kneading mechanism for graphite negative electrode material of lithium battery

Abstract

The utility model relates to the technical field of lithium battery production, and provides a lithium battery graphite cathode material mixing and kneading mechanism which comprises a shell, an outer frame and a driving motor, the outer frame is fixed on the side surface of the shell, the driving motor is installed on the surface of the outer frame, a feeding assembly is arranged at the top of the shell, and a mixing assembly is arranged in the shell. The discharging assembly is arranged at the bottom of the shell, the feeding port is formed in the top of the shell, a sealing frame is arranged on the surface of the shell and located outside the feeding port, a pair of telescopic air cylinders is arranged on the surface of the shell, the output ends of the telescopic air cylinders are connected with sealing covers, the sealing covers are inserted into the sealing frame, and a feeding hopper is arranged on the top of the sealing frame. By means of the technical scheme, the problems that according to a mixing mode in the related technology, all materials are put into a mixing and kneading device, mixing is conducted through continuous stirring, the materials are put into the mixing and kneading device at a time, the materials cannot be added for the second time, and the situation of blockage is prone to occurring in a discharging mode, and sufficient discharging cannot be achieved are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery production, and specifically to a mixing mechanism for graphite negative electrode materials of lithium batteries. Background Art

[0002] Lithium-ion secondary batteries currently mainly use graphite powder as the negative electrode material of their conductive negative electrode. During the production process of graphite negative electrode materials, it is often necessary to mix the ground graphite powder with other organic and inorganic additives to make them evenly mixed.

[0003] Chinese patent application number CN202022020697.2 provides a kneading device for the production of lithium battery graphite negative electrode materials, a double-layer jacketed kneading pot and a Z-shaped paddle inside it, a transmission mechanism is provided between the drive motor and the Z-shaped paddle, a sealed cover is provided on the top of the kneading pot, a feed port is provided above the sealed cover, a feed auger is provided above the feed port, a feeding hopper is provided at the feed end of the feed auger, a double-layer jacketed auxiliary material tank is provided above the feed auger, and an auxiliary material pipe is connected to the bottom of the auxiliary material tank A first ejector is provided on the feeding hopper, and a second ejector is provided on the feeding port. The feeding ports of the two ejectors are connected to the auxiliary material pipe. A discharging auger is connected to the bottom of the kneading pot, and a discharging port is provided at the right end of the discharging auger. The driving motor is connected to the reducer through the main shaft belt and the main shaft wheel set, the reducer is connected to the Z-shaped paddle through the rotating shaft, the feeding auger is connected to the rotating shaft through the feeding belt and the feeding wheel set, and the discharging auger is connected to the rotating shaft through the discharging belt and the discharging wheel set, so that the kneading is more uniform and efficient.

[0004] The mixing method of the kneading device for producing the stirred lithium battery graphite negative electrode material is to put all the materials into the kneading device, mix them by continuous stirring, put the materials in at one time, and cannot add materials a second time, and the discharge method is prone to blockage and cannot be fully discharged.

[0005] Therefore, improvements are made to address the above problems. Utility Model Content

[0006] The utility model proposes a kneading mechanism for lithium battery graphite negative electrode materials, which solves the problem that the mixing method in the related art is to put all the materials into the kneading device, mix them by continuous stirring, put the materials in at one time, cannot add the materials a second time, and the discharging method is prone to blockage and cannot be fully discharged.

[0007] The technical solution of the utility model is as follows:

[0008] A housing, an outer frame and a driving motor, wherein the outer frame is fixed to a side surface of the housing, and the driving motor is mounted on a surface of the outer frame;

[0009] A feed assembly, the feed assembly being arranged on the top of the housing;

[0010] A mixing component, the mixing component is arranged inside the housing;

[0011] A discharging assembly, the discharging assembly being arranged at the bottom of the housing;

[0012] The feed assembly includes a feed port, which is opened on the top of the shell, a sealing frame is provided on the surface of the shell, the sealing frame is located outside the feed port, a pair of telescopic cylinders are provided on the surface of the shell, the output end of the telescopic cylinder is connected to a sealing cover, the sealing cover is inserted in the sealing frame, and a feed hopper is provided on the top of the sealing frame.

[0013] As a further technical solution, the mixing assembly includes a pair of rotating seats, which are rotatably connected to the side surface of the outer shell, and the output end of the drive motor is connected to the rotating seat. A pair of outer ring stirring frames are connected before the rotating seats, and a pair of inner ring stirring frames are connected between the rotating seats. Several bonding convex layers are provided on the outer ring stirring frames and the inner ring stirring frames.

[0014] As a further technical solution, the discharging assembly includes a discharging port, which is opened at the bottom of the outer shell, a pair of second cylinders are fixedly connected to the side surface of the outer shell, the output end of the second cylinder is connected to a cross frame, and the side end surface of the cross frame is rotatably connected to the bottom cover through a pin shaft.

[0015] As a further technical solution, an extension rod is fixedly connected to the bottom of the bottom cover, a third cylinder is rotatably connected between the bottom of the cross frame and the extension rod via a pin shaft, and the bottom cover as a whole has an arc-shaped transition structure.

[0016] As a further technical solution, the bottom of the shell is a semicircular structure, and the curvature of the bottom cover matches the shape of the bottom of the shell.

[0017] As a further technical solution, the outer ring stirring frame and the inner ring stirring frame are symmetrical structures, and the outer ring stirring frame and the inner ring stirring frame are located in the same straight line position.

[0018] As a further technical solution, a plurality of auxiliary rods are fixedly connected between the rotating seats, and the auxiliary rods are located on both sides of the inner ring stirring frame.

[0019] As a further technical solution, the bottom cover can be controlled by the third cylinder to rotate 90° downward with the pin connection as the axis.

[0020] The working principle and beneficial effects of the utility model are:

[0021] 1. The utility model is provided with a feeding assembly. Through the interaction of the feeding port, the sealing frame, the telescopic cylinder and the sealing cover, the sealing cover can be controlled to move laterally by the telescopic cylinder, and the opening size of the feeding port can be controlled at will. The opening structure is convenient for adding fillers at any time without affecting the internal kneading and stirring.

[0022] 2. The utility model is provided with a discharging assembly. Through the interaction of the discharging port, the second cylinder, the cross frame, the bottom cover and the third cylinder, the bottom cover can be controlled by the second cylinder to move vertically downward, and then the third cylinder controls the bottom cover to flip downward 90°, so that the materials at the bottom of the concentrated outer shell can be fully discharged outward, which is convenient for taking out all the materials and can effectively avoid the situation where the discharging is blocked and cannot be fully discharged. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0024] Figure 1 It is a schematic diagram of the structure of the utility model;

[0025] Figure 2 This is the axonometric drawing of the utility model;

[0026] Figure 3 This is a cross-sectional view of the utility model;

[0027] Figure 4 This is an axonometric sectional view of the utility model;

[0028] In the figure: 1. outer shell; 2. outer frame; 3. driving motor; 4. feeding assembly; 4-1. feeding port; 4-2. sealing frame; 4-3. telescopic cylinder; 4-4. sealing cover; 4-5. feeding hopper; 5. mixing assembly; 5-1. rotating seat; 5-2. outer ring stirring frame; 5-3. inner ring stirring frame; 5-4. bonding convex layer; 6. discharging assembly; 6-1. discharging port; 6-2. second cylinder; 6-3. horizontal frame; 6-4. bottom cover; 6-5. extension rod; 6-6. third cylinder; 7. auxiliary rod. DETAILED DESCRIPTION

[0029] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] like Figure 1~Figure 4 As shown, this embodiment proposes a lithium battery graphite negative electrode material kneading mechanism, including

[0031] A housing 1, an outer frame 2 and a driving motor 3, wherein the outer frame 2 is fixed to a side surface of the housing 1 and the driving motor 3 is mounted on a surface of the outer frame 2;

[0032] A feed assembly 4, which is arranged on the top of the housing 1;

[0033] A mixing component 5, the mixing component 5 is arranged inside the housing 1;

[0034] A discharging assembly 6, which is arranged at the bottom of the housing 1;

[0035] The feed assembly 4 includes a feed port 4-1, which is opened at the top of the outer shell 1. A sealing frame 4-2 is arranged on the surface of the outer shell 1, and the sealing frame 4-2 is located outside the feed port 4-1. A pair of telescopic cylinders 4-3 are arranged on the surface of the outer shell 1, and the output end of the telescopic cylinder 4-3 is connected to a sealing cover 4-4, and the sealing cover 4-4 is inserted in the sealing frame 4-2. A feed hopper 4-5 is arranged on the top of the sealing frame 4-2.

[0036] In this embodiment, in order to achieve the effect of being able to fill the material at any time, a feeding component 4 is designed, a feeding port 4-1 is opened on the top of the outer shell 1, and a sealing frame 4-2 is arranged around the outside, and two telescopic cylinders 4-3 are also arranged on the top of the outer shell 1, and a sealing cover 4-4 is slidably inserted in the sealing frame 4-2 and connected to the telescopic cylinder 4-3. The output end of the telescopic cylinder 4-3 can be telescoped to control the sealing cover 4-4 to open and close the feeding port 4-1, and a feeding hopper 4-5 is also arranged on the top of the sealing frame 4-2, and the opening of the feed hopper 4-5 is larger to facilitate feeding.

[0037] Furthermore, the mixing assembly 5 includes a pair of rotating seats 5-1, which are rotatably connected to the side surface of the outer shell 1, and the output end of the driving motor 3 is connected to the rotating seat 5-1. A pair of outer ring stirring frames 5-2 are connected before the rotating seats 5-1, and a pair of inner ring stirring frames 5-3 are connected between the rotating seats 5-1. A plurality of adhesive convex layers 5-4 are provided on the outer ring stirring frames 5-2 and the inner ring stirring frames 5-3.

[0038] 5. Mixing assembly 5; 5-1. Rotating seat 5-1; 5-2. Outer ring stirring frame 5-2; 5-3. Inner ring stirring frame 5-3; 5-4. Adhesive convex layer 5-4

[0039] In this embodiment, in order to achieve the effect of uniformly kneading and stirring the materials, a mixing component 5 is designed, and rotating seats 5-1 are rotatably connected on both sides of the outer shell 1, and the rotating seat 5-1 on one side is connected to the output end of the driving motor 3, and an outer ring stirring frame 5-2 and an inner ring stirring frame 5-3 are connected between the two rotating seats 5-1. When the driving motor 3 drives the rotating seat 5-1 to rotate, the outer ring stirring frame 5-2 and the inner ring stirring frame 5-3 can be rotated to quickly stir the materials, and an adhesive convex layer 5-4 is provided on the surface of the outer ring stirring frame 5-2 and the inner ring stirring frame 5-3 to prevent the smooth surface from being unable to hang the material.

[0040] Furthermore, the discharge assembly 6 includes a discharge port 6-1, which is opened at the bottom of the outer shell 1. A pair of second cylinders 6-2 are fixedly connected to the side surface of the outer shell 1, and the output end of the second cylinder 6-2 is connected to a cross frame 6-3. The side end surface of the cross frame 6-3 is rotatably connected to a bottom cover 6-4 through a pin shaft. An extension rod 6-5 is fixedly connected to the bottom of the bottom cover 6-4. A third cylinder 6-6 is rotatably connected between the bottom of the cross frame 6-3 and the extension rod 6-5 through a pin shaft. The bottom cover 6-4 has an arc-shaped transition structure as a whole.

[0041] In this embodiment, in order to achieve the effect of discharging all materials to the outside, a discharge component 6 is designed, a discharge port 6-1 is opened at the bottom of the outer shell 1, and a second cylinder 6-2 is installed on the outer surface. The output end of the second cylinder 6-2 is connected to a cross frame 6-3, and the side end face of the cross frame 6-3 is rotatably connected to a bottom cover 6-4 through a pin shaft. The bottom cover 6-4 can be completely fitted in the discharge port 6-1 and closed, and an extension rod 6-5 is arranged at the bottom of the bottom cover 6-4. A third cylinder 6-6 is connected between the bottom of the cross frame 6-3 and the extension rod 6-5. The second cylinder 6-2 can control the bottom cover 6-4 to move downward to open the discharge port 6-1, and then the bottom cover 6-4 is pulled by telescopic movement of the output end of the third cylinder 6-6. The bottom cover 6-4 is opened by rotating downward at the pin shaft connection, and the material can be directly taken out of the bottom cover 6-4.

[0042] Furthermore, the bottom of the housing 1 is a semicircular structure, and the curvature of the bottom cover 6-4 matches the shape of the bottom of the housing 1.

[0043] In this embodiment, the semicircular structure allows the materials to be gathered at the bottom of the housing 1 and stacked in the bottom cover 6 - 4 , so that they can be easily taken out when opened.

[0044] Furthermore, the outer ring stirring frame 5-2 and the inner ring stirring frame 5-3 are symmetrical structures, and the outer ring stirring frame 5-2 and the inner ring stirring frame 5-3 are located in the same straight line position.

[0045] In this embodiment, through the symmetrical structure, the outer ring stirring frame 5-2 and the inner ring stirring frame 5-3 can stir the materials more concentratedly and evenly when rotating.

[0046] Furthermore, a plurality of auxiliary rods 7 are fixedly connected between the rotating seats 5-1, and the auxiliary rods 7 are located on both sides of the inner ring stirring frame 5-3.

[0047] In this embodiment, by adding multiple auxiliary rods 7 and positioning the auxiliary rods 7 on both sides of the inner ring stirring frame 5 - 3 , the materials can be driven to continuously concentrate toward the center and then dispersed during stirring, thereby accelerating the stirring efficiency.

[0048] Furthermore, the bottom cover 6-4 can be controlled by the third cylinder 6-6 to rotate 90 degrees downward with the pin connection as the axis.

[0049] In this embodiment, by flipping the bottom cover at an angle of 6-490°, all materials can be taken out from the inside of the outer shell 1 without leaving residue, thus saving cleaning time.

[0050] When processing is required, start the telescopic cylinder 4-3 to pull the sealing cover 4-4, open the feed port 4-1, put the material into the shell 1, then close the sealing cover 4-4, and then start the driving motor 3, so that the rotating seat 5-1 drives the outer ring stirring frame 5-2, the inner ring stirring frame 5-3 and the auxiliary rod 7 to start rotating, kneading and stirring. When filling is needed, the telescopic cylinder 4-3 can be started at any time to control the sealing cover 4-4. The opening position is higher than the stirring range and overflow will not occur. After the kneading and stirring is completed, start the second cylinder 6-2, open the bottom cover 6-4 downwards, and then start the third cylinder 6-6 to pull the bottom cover 6-4 through the output end contraction, and take out the material in the bottom cover 6-4.

[0051] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A kneading mechanism for lithium battery graphite negative electrode material, characterized in that: include A housing (1), an outer frame (2) and a drive motor (3), wherein the outer frame (2) is fixed to a side surface of the housing (1), and the drive motor (3) is mounted on a surface of the outer frame (2); A feed assembly (4), the feed assembly (4) being arranged on the top of the housing (1); A material mixing component (5), the material mixing component (5) being arranged inside the housing (1); A discharge assembly (6), the discharge assembly (6) being arranged at the bottom of the housing (1); The feed assembly (4) comprises a feed port (4-1), the feed port (4-1) being opened at the top of the shell (1), a sealing frame (4-2) being arranged on the surface of the shell (1), the sealing frame (4-2) being located outside the feed port (4-1), a pair of telescopic cylinders (4-3) being arranged on the surface of the shell (1), the output ends of the telescopic cylinders (4-3) being connected to sealing covers (4-4), the sealing covers (4-4) being inserted into the sealing frames (4-2), and a feed hopper (4-5) being arranged on the top of the sealing frames (4-2).

2. A lithium battery graphite negative electrode material kneading mechanism according to claim 1, characterized in that: The mixing assembly (5) comprises a pair of rotating seats (5-1), wherein the rotating seats (5-1) are rotatably connected to the side surface of the outer shell (1), the output end of the drive motor (3) is connected to the rotating seat (5-1), a pair of outer ring stirring frames (5-2) are connected in front of the rotating seat (5-1), a pair of inner ring stirring frames (5-3) are connected between the rotating seats (5-1), and a plurality of adhesive convex layers (5-4) are provided on the outer ring stirring frames (5-2) and the inner ring stirring frames (5-3).

3. A lithium battery graphite negative electrode material kneading mechanism according to claim 1, characterized in that: The discharge assembly (6) comprises a discharge port (6-1), the discharge port (6-1) being opened at the bottom of the shell (1), a pair of second cylinders (6-2) being fixedly connected to the side surface of the shell (1), the output end of the second cylinder (6-2) being connected to a cross frame (6-3), and the side end surface of the cross frame (6-3) being rotatably connected to a bottom cover (6-4) via a pin shaft.

4. A lithium battery graphite negative electrode material kneading mechanism according to claim 3, characterized in that: The bottom of the bottom cover (6-4) is fixedly connected to an extension rod (6-5), the bottom of the cross frame (6-3) and the extension rod (6-5) are rotatably connected to a third cylinder (6-6) via a pin shaft, and the bottom cover (6-4) as a whole is an arc-shaped transition structure.

5. A lithium battery graphite negative electrode material kneading mechanism according to claim 4, characterized in that: The bottom of the housing (1) is a semicircular structure, and the curvature of the bottom cover (6-4) matches the shape of the bottom of the housing (1).

6. A lithium battery graphite negative electrode material kneading mechanism according to claim 2, characterized in that: The outer ring stirring frame (5-2) and the inner ring stirring frame (5-3) are symmetrical structures, and the outer ring stirring frame (5-2) and the inner ring stirring frame (5-3) are located in the same straight line position.

7. A lithium battery graphite negative electrode material kneading mechanism according to claim 2, characterized in that: A plurality of auxiliary rods (7) are fixedly connected between the rotating seats (5-1), and the auxiliary rods (7) are located on both sides of the inner ring stirring frame (5-3).

8. A lithium battery graphite negative electrode material kneading mechanism according to claim 4, characterized in that: The bottom cover (6-4) can be controlled by the third cylinder (6-6) to rotate 90 degrees downward with the pin connection as the axis.

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