Self-circulation dispersing device

Abstract

The utility model belongs to the technical field of slurry mixing devices, and particularly relates to a self-circulation dispersing device. The dispersing device comprises a dispersing tank body, a tank cover covering the top end of the dispersing tank body, a driving motor mounted on the tank cover and a dispersing assembly mounted at the tail end of the driving motor, the dispersing assembly comprises a dispersing shaft in transmission connection with an output shaft of the driving motor, a circular tank body fixed on the tank cover, a dispersing cavity arranged at the lower part of the circular tank body, a lower dispersing stator assembly and an upper dispersing stator assembly which are sequentially fixed in the dispersing cavity from bottom to top, and a rotor assembly and dispersing paddles which are mounted on the dispersing shaft in a sleeving manner; a feeding hole is formed in the circular tank body, a discharging hole is formed in the bottom end of the dispersing tank body, and a circulating pump is mounted between the discharging hole and the feeding hole. According to the utility model, through self-circulation dispersion, dispersion and viscosity reduction of slurry can be realized through repeated circulation according to needs, aggregates are further opened through reciprocating circulation, and the quality of the slurry can be effectively improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of slurry mixing devices, specifically relating to a self-circulating dispersion device. Background Technology

[0002] Positive and negative electrodes are important structural components of lithium-ion batteries. The positive electrode sheet is made from a positive electrode slurry containing components such as binders, conductive agents, and positive electrode materials, while the negative electrode sheet is made from a negative electrode material containing components such as binders and graphite carbon powder. The preparation of both positive and negative electrode slurries involves a series of processes such as mixing, dissolving, and dispersing liquids with liquids and liquids with solids.

[0003] Traditionally, mixing of slurries has been accomplished using stirring devices. Existing stirring devices involve adding all the powder and liquid materials into a container and then using a rotating stirring paddle to mix the slurry until it is homogeneous. However, traditional powder-liquid mixing equipment is not effective at dispersing powders and tends to form large agglomerates in the slurry obtained from the mixing of powder and liquid, resulting in poor mixing of powder and liquid. Therefore, there is an urgent need to develop a self-circulating dispersion device that does not produce large agglomerates and has a good mixing effect. Utility Model Content

[0004] The purpose of this invention is to overcome the defects of large particle agglomerates and poor mixing effect in the existing technology, and to provide a self-circulating dispersion device with good mixing effect, high efficiency, rapid dispersion and viscosity reduction and no large particle agglomerates.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a self-circulating dispersion device, comprising: a dispersion tank, a tank cover on the top of the dispersion tank, a drive motor mounted on the tank cover, and a dispersion assembly mounted on the end of the drive motor. The dispersion assembly includes a dispersion shaft that is drivenly connected to the output shaft of the drive motor, a circular tank fixed on the tank cover, a dispersion cavity disposed in the lower part of the circular tank, a lower dispersion stator assembly and an upper dispersion stator assembly fixed in the dispersion cavity from bottom to top, a rotor assembly sleeved and mounted on the dispersion shaft, and a dispersion blade sleeved and mounted on the dispersion shaft. The circular tank has a feed inlet, and the bottom of the dispersion tank has a discharge outlet. The discharge outlet and the feed inlet are connected by a pipeline and a circulation pump is installed thereon.

[0006] Furthermore, the lower dispersion stator assembly includes a lower dispersion stator disk fixed to the bottom end of the circular tank and a plurality of lower dispersion stator teeth fixed at equal intervals in a circumferential array on the upper surface of the lower dispersion stator disk.

[0007] Furthermore, the upper dispersion stator assembly includes an upper dispersion stator disk fixed on the inner wall of the dispersion cavity and a plurality of upper dispersion stator teeth fixed at equal intervals in a circumferential array on the lower end face of the upper dispersion stator disk.

[0008] Furthermore, the rotor assembly includes a rotor disk sleeved and mounted on the dispersion shaft, a plurality of lower rotor teeth fixed at equal intervals in a circumferential array on the lower end face of the rotor disk, and a plurality of upper rotor teeth fixed at equal intervals in a circumferential array on the upper end face of the rotor disk, wherein the lower rotor teeth are provided in two layers.

[0009] Furthermore, the lower dispersed stator teeth cooperate with the two layers of lower rotor teeth and are located in the channel between the two layers of lower rotor teeth.

[0010] Furthermore, the upper rotor teeth engage with the upper dispersed stator teeth and are located outside the upper dispersed stator teeth.

[0011] Furthermore, a condenser is installed between the discharge port and the inlet port.

[0012] Furthermore, the dispersion tank is equipped with a cooling jacket, and the material is cooled by filling the cooling jacket with a cooling medium.

[0013] Furthermore, the discharge port, circulating pump, condenser, and inlet are connected by pipelines.

[0014] Furthermore, the circular tank is also provided with a feeding chamber, and the dispersion chamber is located below the feeding chamber.

[0015] The beneficial effects of the self-circulating dispersion device of this utility model are:

[0016] This invention features a self-circulating dispersion mechanism that allows for multiple cycles as needed to disperse and reduce the viscosity of the slurry. The repeated cycles further break up agglomerates, achieving cyclic dispersion of the material.

[0017] This invention uses a dispersing motor to drive the dispersing shaft to rotate, which in turn drives the stirring blades to stir and disperse the slurry. The slurry is thrown out under the action of centrifugal force and is squeezed and sheared through the tooth groove gap between the upper rotor teeth and the upper dispersing stator teeth. Then it is squeezed and sheared through the tooth groove gap between the lower dispersing stator teeth and the two layers of lower rotor teeth, thus achieving the shearing and dispersion of the slurry.

[0018] This invention further enhances the shearing effect by staggering the outer lower rotor teeth, the lower dispersed stator teeth, and the inner lower rotor teeth in sequence, so that the slurry is subjected to strong turbulent shearing in the small gap between the stator teeth and rotor teeth grooves. Attached Figure Description

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0020] Figure 1 This is an overall structural diagram of an embodiment of the present utility model;

[0021] Figure 2 This is a cross-sectional view of the overall structure of an embodiment of this utility model;

[0022] Figure 3 yes Figure 2 A magnified view of a portion of the image;

[0023] Figure 4 This is a first-view sectional view of the overall structure in an embodiment of this utility model;

[0024] Figure 5 This is a first-view sectional view of the overall structure in an embodiment of this utility model.

[0025] In the diagram: 1. Dispersion tank, 2. Tank cover, 3. Drive motor, 4. Dispersion assembly, 40. Dispersion shaft, 41. Circular tank, 42. Dispersion chamber, 43. Lower dispersion stator assembly, 431. Lower dispersion stator disc, 432. Lower dispersion stator teeth, 44. Upper dispersion stator assembly, 441. Upper dispersion stator disc, 442. Upper dispersion stator teeth, 45. Rotor assembly, 451. Rotor disc, 452. Lower rotor teeth, 453. Upper rotor teeth, 46. Dispersion blades, 47. Feed chamber, 5. Feed inlet, 6. Discharge outlet, 7. Circulation pump, 8. Condenser, 9. Cooling jacket. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0027] like Figures 1-5The present invention provides a specific embodiment of a self-circulating dispersion device, including a dispersion tank 1, a tank cover 2 covering the top of the dispersion tank 1, a drive motor 3 mounted on the tank cover 2, and a dispersion assembly 4 mounted on the end of the drive motor 3. The dispersion assembly 4 is located at the upper part of the dispersion tank 1. The dispersion assembly 4 includes a dispersion shaft 40 that is drivenly connected to the output shaft of the drive motor 3, a circular tank 41 fixed on the tank cover 2, a dispersion cavity 42 disposed at the lower part of the circular tank 41, a lower dispersion stator assembly 43 and an upper dispersion stator assembly 44 fixed in the dispersion cavity 42 from bottom to top, a rotor assembly 45 sleeved and mounted on the dispersion shaft 40, and a dispersion blade 46 sleeved and mounted on the dispersion shaft 40. The circular tank 41 has a feed inlet 5, and the bottom of the dispersion tank 1 has a discharge outlet 6. A circulation pump 7 is installed between the discharge outlet 6 and the feed inlet 5. The drive motor 3 drives the dispersion shaft 40 to rotate, which in turn drives the rotor assembly 45 and the dispersion blades 46 to rotate. The dispersion blades 46 stir and disperse the material. The slurry is thrown out under centrifugal force and centrifugally squeezed by the rotor assembly 45, the lower dispersion stator assembly 43 and the upper dispersion stator assembly 44. The slurry is subjected to strong mechanical and hydraulic shearing, liquid layer friction, impact tearing and other combined effects in the gap between the dispersion teeth and grooves of the stator and rotor. It is instantly sheared and dispersed, realizing the dispersion and viscosity reduction of the slurry, which can effectively improve the slurry quality. The dispersed slurry is discharged from the outlet 6 and enters the feed chamber 47 again from the inlet 5 under the action of the circulating pump 7. It can be circulated multiple times as needed to achieve the dispersion and viscosity reduction of the slurry. Through repeated circulation, the agglomerates are further opened up, which can effectively avoid the existence of large particle agglomerates and further improve the slurry quality.

[0028] See Figure 2The lower dispersion stator assembly 43 includes a lower dispersion stator disk 431 fixed to the bottom of the circular tank 41 and a plurality of lower dispersion stator teeth 432 fixed in a circular array at equal intervals on the upper end surface of the lower dispersion stator disk 431. The upper dispersion stator assembly 44 includes an upper dispersion stator disk 441 fixed to the inner wall of the dispersion cavity 42 and a plurality of upper dispersion stator teeth 442 fixed in a circumferential array at equal intervals on the lower end surface of the upper dispersion stator disk 441. The rotor assembly 45 includes a rotor disk 451 sleeved and mounted on the dispersion shaft 40, a plurality of lower rotor teeth 452 fixed in a circumferential array at equal intervals on the lower end surface of the rotor disk 451, and a plurality of upper rotor teeth 453 fixed in a circumferential array at equal intervals on the upper end surface of the rotor disk 451. The lower rotor teeth 452 are provided in two layers. The lower dispersion stator teeth 432 cooperate with the two layers of lower rotor teeth 452, and the lower dispersion stator teeth 432 are located in the channel between the two layers of lower rotor teeth 452. The upper rotor tooth 453 engages with the upper dispersing stator tooth 442 and is located outside the upper dispersing stator tooth 442. The dispersing motor drives the dispersing shaft 40 to rotate, which in turn drives the dispersing blades 46 to stir and disperse the slurry. The slurry is thrown out under the action of centrifugal force and is squeezed and sheared through the tooth groove gap between the upper rotor tooth 453 and the upper dispersing stator tooth 442. Then, it is squeezed and sheared further down through the tooth groove gap between the lower dispersing stator tooth 432 and the two layers of lower rotor teeth 452, thus achieving shearing and dispersion of the slurry, which can effectively improve the mixing effect and mixing efficiency of the slurry.

[0029] like Figure 4 As shown, the outer lower rotor teeth 452, the lower dispersing stator teeth 432, and the inner lower rotor teeth 452 are arranged in a staggered manner to reduce the tooth groove gap between the lower rotor teeth 452 and the lower dispersing stator teeth 432, thereby reducing the channel through which the slurry passes. This causes the slurry to be subjected to strong turbulent shearing in the small gap between the stator teeth and rotor teeth, further enhancing the shearing effect and effectively improving the mixing effect and mixing efficiency of the slurry.

[0030] See Figure 1 A condenser 8 is installed on the pipeline between the discharge port 6 and the inlet 5. The discharge port 6, the circulation pump 7, the condenser 8, and the inlet 5 are connected by a pipeline. The slurry discharged from the discharge port 6 is transported to the inlet 5 by the circulation pump 7 and enters the circular tank 41. The dispersion component 4 further disperses and reduces the viscosity of the slurry. Through reciprocating circulation, the agglomerates are further broken up, realizing the cyclic dispersion of the material and effectively improving the slurry quality.

[0031] like Figure 2 As shown, in order to prevent the material temperature from being too high during the dispersion process and damaging the molecular structure of the material, thus affecting the quality of the slurry, a cooling jacket 9 is provided on the dispersion tank 1. The material is cooled by filling the cooling jacket 9 with a cooling medium.

[0032] The circular tank 41 is also provided with a feeding chamber 47, and the dispersion chamber 42 is located below the feeding chamber 47. The material enters from the feeding port 5 on the feeding chamber 47 and falls into the dispersion chamber 42. The material is dispersed and mixed by the lower dispersion stator assembly 43, the upper dispersion stator assembly 44, the rotor assembly 45 and the dispersion blades 46.

[0033] It should be understood that the specific embodiments described above are only for explaining the present invention and are not intended to limit the present invention. Obvious variations or modifications derived from the spirit of the present invention are still within the protection scope of the present invention.

Claims

1. A self-circulating dispersion device characterized by, include: The dispersion tank (1), the tank cover (2) covering the top of the dispersion tank (1), the drive motor (3) installed on the tank cover (2) and the dispersion assembly (4) installed at the end of the drive motor (3), the dispersion assembly (4) includes a dispersion shaft (40) that is connected to the output shaft of the drive motor (3), a circular tank (41) fixed on the tank cover (2), a dispersion cavity (42) set at the bottom of the circular tank (41), a lower dispersion stator assembly (43) and an upper dispersion stator assembly (44) fixed in the dispersion cavity (42) from bottom to top, a rotor assembly (45) sleeved on the dispersion shaft (40) and a dispersion blade (46) sleeved on the dispersion shaft (40), the circular tank (41) is provided with a feed inlet (5), the bottom end of the dispersion tank (1) is provided with a discharge outlet (6), the discharge outlet (6) and the feed inlet (5) are connected by a pipeline and a circulation pump (7) is installed.

2. A self-circulating dispersion device according to claim 1, wherein The lower dispersion stator assembly (43) includes a lower dispersion stator disk (431) fixed at the bottom of the circular tank (41) and a plurality of lower dispersion stator teeth (432) fixed at equal intervals in a circumferential array on the upper surface of the lower dispersion stator disk (431).

3. The self-circulating dispersion device according to claim 2, characterized in that, The upper dispersion stator assembly (44) includes an upper dispersion stator disk (441) fixed on the inner wall of the dispersion cavity (42) and a plurality of upper dispersion stator teeth (442) fixed in a circumferential array at equal intervals on the lower end face of the upper dispersion stator disk (441).

4. The self-circulating dispersion device according to claim 3, characterized in that, The rotor assembly (45) includes a rotor disk (451) sleeved on the dispersion shaft (40), a plurality of lower rotor teeth (452) fixed in a circumferential array at equal intervals on the lower end face of the rotor disk (451), and a plurality of upper rotor teeth (453) fixed in a circumferential array at equal intervals on the upper end face of the rotor disk (451). The lower rotor teeth (452) are provided in two layers.

5. The self-circulating dispersion device according to claim 4, characterized in that, The lower dispersed stator teeth (432) cooperate with the two layers of lower rotor teeth (452) and are located in the channel between the two layers of lower rotor teeth (452).

6. The self-circulating dispersion device according to claim 5, characterized in that, The upper rotor tooth (453) engages with the upper dispersed stator tooth (442) and is located outside the upper dispersed stator tooth (442).

7. The self-circulating dispersion device according to claim 6, characterized in that, A condenser (8) is also installed between the discharge port (6) and the inlet port (5).

8. The self-circulating dispersion device according to claim 7, characterized in that, The dispersion tank (1) is equipped with a cooling jacket (9), and the material is cooled by filling the cooling jacket (9) with cooling medium.

9. A self-circulating dispersion device according to claim 8, characterized in that, The discharge port (6), circulation pump (7), condenser (8) and feed port (5) are connected by pipelines.

10. A self-circulating dispersion device according to claim 9, characterized in that, The circular tank (41) is also provided with a feeding chamber (47), and the dispersing chamber (42) is located below the feeding chamber (47).

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