High-efficiency dispersed negative electrode adhesive preparation device

Abstract

The utility model belongs to the technical field of knurling of fireproof rolling shutter doors, and provides an efficient dispersing negative electrode adhesive preparation device which comprises a mixing preparation cylinder and a main body of the efficient dispersing negative electrode adhesive preparation device, an annular medicine mixing box is arranged on the periphery of the bottom of the mixing preparation cylinder, and a sealing door is hinged to the outer surface of the mixing preparation cylinder. After an adhesive enters the mixing preparation cylinder through the jet flow mixer, the adhesive falls on the impact plate and is dispersed on the screen plate, then the dispersed adhesive can slide down along the multiple flow guide strips, the adhesive passing through the multiple flow guide strips can form a dispersed water curtain, and then after the additive enters through the feeding opening, the water curtain can flow into the jet flow mixer to form a water curtain. The additive is dispersed along with the screen plate and is in contact with the flow guide strips forming the water curtains, so that the adhesive and the additive are in more uniform contact, and the adhesive and the additive need to pass through a plurality of groups of water curtains, so that the contact time of the adhesive and the additive is longer, and the reaction is more comprehensive.

Description

Technical Field

[0001] This invention belongs to the field of negative electrode adhesive preparation technology, and provides a device for preparing a highly efficient dispersed negative electrode adhesive. Background Technology

[0002] Negative electrode binders are an important component in lithium battery manufacturing. They are mainly used to bond negative electrode active materials (such as graphite, silicon, etc.), conductive additives, and current collectors (such as copper foil) together to ensure the stability and performance of the battery. Negative electrode binders must not only have good adhesion properties, but also maintain stable electrochemical properties during the charging and discharging process of the battery. In the preparation process of negative electrode binders, the binder solution needs to be mixed with negative electrode active materials (such as graphite) and conductive additives (such as carbon black, Super P) and stirred until uniform.

[0003] During the mixing process, the binder solution needs to be in full contact with materials such as graphite and carbon black. If the mixing time is short or the mixing is insufficient, the binder may not be able to uniformly cover the surface of all active materials and conductive additives, thus affecting battery performance. In particular, conductive additives such as carbon black have very fine particles. If there is not enough contact area, it may lead to poor conductivity or insufficient adhesion. Furthermore, the particle size and morphology of negative electrode active materials (such as graphite) and conductive additives (such as carbon black) are quite different. If the mixing process is not thorough, smaller particles (such as carbon black) may not be able to form a uniform dispersion with larger particles (such as graphite), which in turn leads to unstable overall performance of battery electrode materials. Utility Model Content

[0004] To address at least one of the aforementioned technical shortcomings, this utility model provides a highly efficient dispersed negative electrode adhesive preparation device, comprising a mixing preparation cylinder as the main body of the device. The mixing preparation cylinder has an annular mixing tank around its bottom perimeter. A sealing door is hinged to the outer surface of the mixing preparation cylinder. A conical impact plate is fixedly installed above the interior of the mixing preparation cylinder. A dispersion mechanism for guiding the mixing of raw materials is located in the middle of the interior of the mixing preparation cylinder. A pumping mechanism for circulating material delivery is located at the top of the mixing preparation cylinder and the mixing tank.

[0005] Furthermore, a stirrer and a guide plate are provided at the bottom inside the mixing preparation cylinder, a sedimentation tank is provided at the bottom inside the mixing preparation cylinder, and an overflow port runs through between the mixing preparation cylinder and the mixing tank.

[0006] Furthermore, the dispersing mechanism includes:

[0007] The mesh plates are evenly arranged from top to bottom in the middle of the interior of the mixing preparation cylinder;

[0008] The guide strips are evenly distributed around the bottom perimeter of the mesh plate.

[0009] Furthermore, the pumping mechanism includes:

[0010] A jet mixer is disposed at the top of the mixing preparation cylinder;

[0011] A water pump is installed inside the mixing tank;

[0012] A water supply pipe is located at one end of the water pump and extends through to the top of the mixing tank, connecting to the top of the jet mixer;

[0013] The raw material supply interface is located above one side of the jet mixer.

[0014] Furthermore, an inlet for adding additives is installed on the upper side of one side of the mixing preparation cylinder, and an L-shaped overflow pipe runs through the lower side of one side of the mixing preparation cylinder.

[0015] Furthermore, a protective net is provided at the bottom of the overflow pipe, and the other end of the overflow pipe extends to the outside of the mixing preparation cylinder.

[0016] Furthermore, the guide plate is arranged in a ring shape, and the guide plate is inclined downward from the outside to the inside. The overflow port is located above both sides of the sedimentation tank.

[0017] Compared with the prior art, the beneficial effects achieved by this utility model are:

[0018] By setting up a screen and guide strips, after the adhesive enters the mixing preparation cylinder through the jet mixer, the adhesive falls onto the impact plate and disperses onto the screen. The dispersed adhesive then slides down along multiple guide strips, forming a dispersed water curtain. Subsequently, after the additive enters through the inlet, the additive is also dispersed along the screen and comes into contact with the guide strips forming the water curtain, making the contact between the adhesive and the additive more uniform. Furthermore, the adhesive and the additive need to pass through multiple sets of water curtains, which allows for a longer contact time between the adhesive and the additive, resulting in a more complete reaction.

[0019] By setting up a guide plate, a sedimentation tank, and an overflow port, after the adhesive is mixed with the additives, the mixture flows along the guide plate into the sedimentation tank. The residue produced during mixing settles into the sedimentation tank, while the mixture flows along the overflow port into the mixing tank. The water pump in the mixing tank can transport the mixture back to the jet mixer through the water supply pipe for repeated dispersion and concentration, making the mixing more thorough. When there is too much mixture in the mixing preparation cylinder, it can be discharged through the overflow pipe. Attached Figure Description

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

[0021] Figure 2 This is a schematic diagram of the internal structure of the mixing preparation cylinder of this utility model;

[0022] Figure 3 This is a schematic diagram of the mesh structure of this utility model;

[0023] Figure 4 This is a schematic diagram of the guide plate structure of this utility model.

[0024] In the diagram: 1. Mixing preparation cylinder; 2. Mixing tank; 3. Jet mixer; 4. Inlet; 5. Water pump; 6. Water supply pipe; 7. Raw material supply interface; 8. Impact plate; 9. Overflow pipe; 10. Stirrer; 11. Mesh plate; 12. Guide strip; 13. Guide plate; 14. Sedimentation tank; 15. Overflow port. Detailed Implementation

[0025] Please refer to Figures 1 to 4 ;

[0026] This embodiment provides a highly efficient apparatus for preparing a dispersed negative electrode binder, referencing... Figure 1-4 The apparatus includes a mixing preparation cylinder 1, which is the main body of the high-efficiency dispersed negative electrode adhesive preparation device. A ring-shaped mixing tank 2 is provided around the bottom of the mixing preparation cylinder 1. A sealing door is hinged to the outer surface of the mixing preparation cylinder 1. A conical impact plate 8 is fixedly installed at the top inside the mixing preparation cylinder 1. A dispersion mechanism for guiding the mixing of raw materials is provided in the middle inside the mixing preparation cylinder 1. A pumping mechanism for circulating material is provided at the top of the mixing preparation cylinder 1 and the mixing tank 2. A stirrer 10 and a guide plate 13 are provided at the bottom inside the mixing preparation cylinder 1. A sedimentation tank 14 is provided at the bottom inside the mixing preparation cylinder 1. An overflow port 15 runs through between the mixing preparation cylinder 1 and the mixing tank 2.

[0027] In practical implementation, firstly, the adhesive enters the mixing preparation cylinder 1 through the jet mixer 3. The adhesive then falls onto the impact plate 8 and disperses onto the mesh plate 11. The dispersed adhesive then slides down along multiple guide strips 12, forming a dispersed water curtain. Subsequently, after the additive enters through the inlet 4, the additive also disperses along the mesh plate 11 and contacts the guide strips 12 forming the water curtain, resulting in more uniform contact between the adhesive and the additive. Furthermore, the adhesive and additive need to pass through multiple sets of ozone water curtains, while simultaneously... The binder and additives are continuously stirred by the stirrer 10, which makes the contact time between the binder and the additives longer and the reaction more complete. Finally, the negative electrode binder mixture flows into the sedimentation tank 14 along the guide plate 13. The residue produced by the mixing can also be placed in the sedimentation tank 14 by settling. The negative electrode binder mixture can flow into the mixing tank 2 along the overflow port 15. The water pump 5 in the mixing tank 2 can transport it back to the jet mixer 3 through the water pipe 6. The repeated dispersion and concentration make the negative electrode binder mixture more thoroughly mixed.

[0028] Further reference Figure 2 and Figure 3 The dispersing mechanism includes: a mesh plate 11, which is evenly arranged from top to bottom in the middle of the interior of the mixing preparation cylinder 1; and guide strips 12, which are evenly arranged around the bottom of the mesh plate 11.

[0029] In practical implementation, the mesh plate 11 forms a structural barrier and a basis for material dispersion. By providing multiple small holes or grids, the mesh plate 11 can control the flow of materials and help disperse raw materials. When materials flow on the mesh plate 11, they are forced to pass through these small holes or grids, which can achieve a certain degree of dispersion and help the materials to be evenly distributed through the grid, avoiding the accumulation of materials in certain areas. The function of the guide strip 12 is to further guide the flow path of the materials. By changing the direction of flow, the guide strip 12 helps the materials to be better dispersed in various directions, avoiding the aggregation of materials during flow.

[0030] Further reference Figure 2 and Figure 4 The pumping mechanism includes: a jet mixer 3, which is located at the top of the mixing preparation cylinder 1; a water pump 5, which is located inside the mixing tank 2; a water supply pipe 6, which is located at one end of the water pump 5 and extends through to the top of the mixing tank 2 and connects to the top of the jet mixer 3; and a raw material supply interface 7, which is located on one side above the jet mixer 3.

[0031] In practical implementation, the jet mixer 3 functions to mix the raw materials with high-speed water flow, generating strong turbulence, thereby accelerating the mixing process and improving the mixing uniformity. The jet mixer 3 enhances the flow and interaction of materials by changing the direction and speed of the water flow, thereby improving the mixing effect. The water pump 5 is located inside the mixing tank 2 and is responsible for drawing the mixture from the mixing tank 2 and transporting the mixture to the jet mixer 3 through the water supply pipe 6. The raw material supply interface 7 supplies raw materials or agents to the jet mixer 3.

[0032] Further reference Figure 1 and Figure 2 An inlet 4 for adding additives is installed on the upper side of one side of the mixing preparation cylinder 1. An L-shaped overflow pipe 9 runs through the lower side of one side of the mixing preparation cylinder 1. A protective net is installed at the bottom of the overflow pipe 9, and the other end of the overflow pipe 9 runs through to the outside of the mixing preparation cylinder 1.

[0033] In practical implementation, the inlet 4 is mainly used to add additives into the mixing preparation cylinder 1. This design facilitates the addition of different auxiliary materials during the mixing process. The inlet 4 ensures that various additives can be easily added during the mixing process without affecting the overall mixing efficiency. It is usually equipped with an adjustable valve to precisely control the amount of additives added. The overflow pipe 9 adopts an L-shaped design to ensure that if there is too much liquid or slurry in the mixing preparation cylinder during the mixing process, the excess can be smoothly discharged to prevent overflow and maintain the stable operation of the equipment. A protective net is installed at the bottom of the overflow pipe 9, mainly to prevent larger particles or solid impurities from entering the overflow pipe 9 with the liquid flow, which may cause pipe blockage or equipment damage.

[0034] Further reference Figure 2 and Figure 4 The guide plate 13 is arranged in a ring shape and is inclined downward from the outside to the inside. The overflow port 15 is located on both sides above the sedimentation tank 14.

[0035] In practical implementation, the guide plate 13 is arranged in a ring, meaning that its shape is circular and surrounds the center. This design can ensure uniform guidance. The guide plate 13 is inclined downward from the outside to the inside. This angle design helps fluids such as liquids or slurries to flow from the outer edge to the inside, ensuring that the material can smoothly converge to the central area and avoid accumulating at the edge or forming irregular flow. The overflow port 15 is located on both sides above the sedimentation tank 14. It is set in an appropriate position so that when the material in the sedimentation tank 14 reaches a certain height, the overflow port 15 can discharge the excess liquid in time. The design of the guide plate 13 and the overflow port 15 complement each other.

Claims

1. A high-efficiency dispersion negative electrode binder preparation device, comprising a mixing preparation cylinder (1), which is the main body of the high-efficiency dispersion negative electrode binder preparation device, characterized in that: The mixing preparation cylinder (1) is provided with a ring-shaped mixing box (2) around the bottom, the outer surface of the mixing preparation cylinder (1) is hinged with a sealing door, the inside of the mixing preparation cylinder (1) is fixed with a conical impact plate (8) on the top, the inside of the mixing preparation cylinder (1) is provided with a dispersion mechanism for guiding the mixing of raw materials, and the top of the mixing preparation cylinder (1) and the mixing box (2) is provided with a pumping mechanism for circulating feeding.

2. The apparatus for preparing a high-efficiency dispersed negative electrode binder according to claim 1, characterized by: The inside of the mixing preparation cylinder (1) is provided with a stirrer (10) and a guide plate (13), the lower bottom of the inside of the mixing preparation cylinder (1) is provided with a sedimentation tank (14), and the overflow port (15) penetrates between the mixing preparation cylinder (1) and the mixing box (2).

3. The apparatus for preparing a high-efficiency dispersed negative electrode binder according to claim 1, characterized by comprising: The dispersion mechanism comprises: A mesh plate (11) is uniformly arranged from top to bottom in the middle of the inside of the mixing preparation cylinder (1); A flow guide strip (12) is uniformly arranged around the bottom of the mesh plate (11).

4. The apparatus for preparing a high-efficiency dispersed negative electrode binder according to claim 1, characterized by: The pumping mechanism comprises: A jet mixer (3) is arranged at the top of the mixing preparation cylinder (1); A water pump (5) is arranged in the inside of the mixing box (2); A water delivery pipe (6) is arranged at one end of the water pump (5) and penetrates to the upper side of the mixing box (2) and is connected with the top of the jet mixer (3); A raw material supply interface (7) is arranged on the upper side of one side of the jet mixer (3).

5. The apparatus for preparing a high-efficiency dispersed negative electrode binder according to claim 1, characterized by: An adding port (4) for adding additives is installed on the upper side of one side of the mixing preparation cylinder (1), and an overflow pipe (9) arranged in an L shape penetrates through the lower side of one side of the mixing preparation cylinder (1).

6. The apparatus for preparing a high-efficiency dispersed negative electrode binder according to claim 5, characterized by: The overflow pipe (9) is provided with a protective net at the bottom, and the other end of the overflow pipe (9) penetrates to the outside of the mixing preparation cylinder (1).

7. The apparatus for preparing a high-efficiency dispersed negative electrode binder according to claim 2, characterized by: The guide plate (13) is arranged in a ring shape, the guide plate (13) is arranged from outside to inside and downwardly inclined, and the overflow port (15) is located above the two sides of the sedimentation tank (14).

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