Novel slurry suction filtration device

Abstract

The utility model discloses a novel slurry suction filtration device which comprises a mixing barrel, a middle connecting pipe, a mesh screen, a receiving barrel and a vacuum pump, a motor is fixedly arranged on an upper cover of the mixing barrel, a rotating shaft of the motor extends downwards into the mixing barrel, a stirring paddle is arranged at the lower end of the rotating shaft of the motor, and when the motor rotates, the stirring paddle is pushed downwards; a feeding opening is further formed in the upper cover of the mixing barrel, and a feeding cover is arranged at the feeding opening; a middle connecting pipe is arranged below the material mixing barrel, and the material mixing barrel and the middle connecting pipe are connected through a hinge and a buckle; a detachable mesh screen is arranged between the mixing barrel and the middle connecting pipe; the lower portion of the middle connecting pipe is connected with the material receiving barrel, the upper portion of the material receiving barrel is provided with a pressure gauge and a vacuumizing opening, the vacuum pump is connected with the vacuumizing opening through a pipeline, and the bottom of the material receiving barrel is provided with a discharging opening. According to the utility model, the slurry filtering efficiency is greatly improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of secondary batteries, and particularly relates to a novel slurry filtration device. Background Art

[0002] Lithium-ion batteries, with their high energy density, high output power, long cycle life, and low self-discharge, have become the battery technology of choice for mobile devices, electric vehicles, and energy storage systems. Currently, lithium-ion batteries remain a hot area of ​​research. During the manufacturing process of lithium-ion battery cells, the first steps are homogenization and coating. A well-executed process is crucial for ensuring stable cycling electrochemical performance.

[0003] The homogenization process involves homogenizing the active material, conductive additive, and binder components in a solvent. The particle size of each raw material powder is not completely uniform, especially since the active material often contains a small portion of large and small particles. To eliminate the negative effects of large particles on the homogenization and coating processes, the mixed slurry must be filtered to ensure stability and uniformity. Existing filtration equipment is often too complex and costly, making it unsuitable for small-scale trials.

[0004] Therefore, it is necessary to develop a new type of slurry filtration device. Summary of the Invention

[0005] The purpose of the utility model is to provide a novel slurry filtration device to solve the problem that the existing filtration equipment proposed in the background art is often too complicated, too costly and not conducive to small-scale experiments.

[0006] To achieve the above-mentioned purpose, the utility model provides a novel slurry filtration device, comprising a mixing barrel, a middle connecting pipe, a mesh screen, a material collecting barrel, and a vacuum pump;

[0007] An electric motor is fixedly provided at the center of the upper cover of the mixing barrel, and the rotating shaft of the electric motor extends downward into the mixing barrel. A stirring paddle is provided at the lower end of the rotating shaft of the electric motor, and when the motor rotates, the stirring paddle is pushed downward. A loading port is also provided on the upper cover of the mixing barrel, and a loading cover is provided at the loading port.

[0008] A middle connecting pipe is provided below the mixing barrel, and hinges for movably connecting the mixing barrel and the middle connecting pipe are provided on the sides of the mixing barrel and the middle connecting pipe, and a buckle is further provided on the side opposite to the side where the hinge is located, and the mixing barrel and the middle connecting pipe are connected by the hinge and the buckle; a detachable mesh screen is provided between the mixing barrel and the middle connecting pipe;

[0009] A material receiving barrel is connected to the lower part of the middle connecting pipe, a pressure gauge and a vacuum port are provided on the upper part of the material receiving barrel, the vacuum pump is connected to the vacuum port through a pipeline, and a discharge port is provided at the bottom of the material receiving barrel.

[0010] In a specific embodiment, the distance between the stirring paddle and the inner wall of the mixing barrel is greater than 2 cm, and the distance between the stirring paddle and the mesh screen is greater than 1 cm.

[0011] In a specific embodiment, a sealing rubber ring is further provided between the mixing barrel and the middle connecting pipe to ensure the sealing of the connection side of the mixing barrel and the middle connecting pipe.

[0012] In a specific embodiment, the middle connecting tube is funnel-shaped.

[0013] In a specific embodiment, a mesh support is provided at the upper end of the inner wall of the middle connecting pipe, and the mesh is provided on the mesh support.

[0014] In a specific embodiment, the horizontal positions of the pressure gauge and the vacuum port are both higher than the horizontal position of the lower end of the middle connecting pipe.

[0015] In a specific embodiment, the pressure gauge and the vacuum port are respectively located on both sides of the central axis of the material receiving barrel.

[0016] In a specific embodiment, the lower end of the middle connecting pipe is provided with an external thread, the upper end of the material receiving barrel is provided with an internal thread, and the lower end of the middle connecting pipe is threadedly connected to the upper end of the material receiving barrel.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The utility model solves the problems that the existing filtering equipment is often too complicated, too costly and not conducive to small-scale tests.

[0019] The utility model can press the slurry into the collecting barrel under the triple action of the pressure under the stirring paddle, gravity and atmospheric pressure, which greatly improves the filtering efficiency of the slurry and improves the cleanliness of the slurry during the filtering process.

[0020] The utility model can reasonably replace the mesh screen used according to the characteristics of different slurries, making the adaptability stronger.

[0021] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0023] Figure 1 It is a schematic diagram of an embodiment of the utility model;

[0024] Among them, 1. Mixing barrel; 2. Middle connecting pipe; 3. Material collecting barrel; 4. Mesh screen; 5. Vacuum pump; 6. Hinge; 7. Buckle; 11. Motor; 12. Stirring paddle; 13. Loading cover; 21. Mesh screen bracket; 31. Pressure gauge; 32. Discharge port. DETAILED DESCRIPTION

[0025] The following describes the embodiments of the present invention in detail with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered by the claims.

[0026] Example 1

[0027] The utility model provides a novel slurry filtration device, comprising a mixing barrel 1, a middle connecting pipe 2, a mesh screen 4, a material collecting barrel 3, and a vacuum pump 5;

[0028] A motor 11 is fixedly provided at the center of the upper cover of the mixing barrel. The rotating shaft of the motor 11 extends downward into the mixing barrel. A stirring paddle 12 is provided at the lower end of the rotating shaft of the motor 11. When the motor 11 rotates, the stirring paddle 12 is pushed downward. A loading port is also provided on the upper cover of the mixing barrel 1, and a loading cover 13 is provided at the loading port.

[0029] A middle connecting pipe 2 is provided below the mixing barrel 1. Hinge 6 for movably connecting the mixing barrel 1 and the middle connecting pipe 2 is provided on the sides of the mixing barrel 1 and the middle connecting pipe 2. A buckle 7 is further provided on the side opposite to the side where the hinge is located. The mixing barrel 1 and the middle connecting pipe 2 are connected by the hinge 6 and the buckle 7. A detachable mesh screen 4 is provided between the mixing barrel 1 and the middle connecting pipe 2.

[0030] A material receiving barrel 3 is connected to the lower portion of the middle connecting pipe 2 , a pressure gauge 31 and a vacuum port are provided on the upper portion of the material receiving barrel 3 , the vacuum pump 5 is connected to the vacuum port through a pipeline, and a discharge port 32 is provided at the bottom of the material receiving barrel 3 .

[0031] The distance between the stirring paddle and the inner wall of the mixing barrel is greater than 2 cm, and the distance between the stirring paddle and the mesh screen is greater than 1 cm. Maintaining a certain distance can avoid affecting the formation of the slurry.

[0032] A sealing rubber ring is also provided between the mixing barrel 1 and the middle connecting pipe 2 to ensure the sealing performance of the connection side of the mixing barrel 1 and the middle connecting pipe 2. The sealing rubber ring can more effectively ensure the sealing of the mixing barrel 1 and the middle connecting pipe 2 sides.

[0033] The middle connecting pipe 2 is funnel-shaped.

[0034] The upper end of the inner wall of the middle connecting pipe is provided with a mesh bracket 21, and the mesh screen is provided on the mesh bracket 21. Designing the mesh bracket to support the mesh screen can reduce possible damage to the mesh screen during the installation process of the mesh screen, and is also more convenient for the installation of the mesh screen.

[0035] The horizontal positions of the pressure gauge 31 and the vacuum port are both higher than the horizontal position of the lower end of the middle connecting pipe 2. By designing the horizontal position height, the slurry will not interfere with the accuracy of the pressure gauge 31 and the vacuum pumping effect during the filtration process.

[0036] The pressure gauge 31 and the vacuum port are respectively located on both sides of the central axis of the receiving barrel. Maintaining a certain distance between the pressure gauge 31 and the vacuum port can obtain a more realistic vacuum effect and avoid the influence caused by being too close.

[0037] The lower end of the middle connecting pipe is provided with an external thread, and the upper end of the receiving barrel is provided with an internal thread. The lower end of the middle connecting pipe is threadedly connected to the upper end of the receiving barrel. The threaded connection is convenient for disassembly and cleaning, and will not affect the effect of the vacuum pump.

[0038] In this embodiment, the specific working process is as follows: the utility model pours the slurry into the mixing barrel through the loading cover, the motor drives the stirring paddle to rotate, and the stirring paddle blades provide downward pressure during the rotation, and the vacuum pump is turned on to make the receiving barrel enter a negative pressure state. The slurry in the mixing barrel is pressed into the receiving barrel under the triple action of the downward pressure of the stirring paddle, gravity and atmospheric pressure, which greatly improves the filtration rate of the slurry and avoids the problem of slurry sedimentation during the stirring process, thereby ensuring the uniformity of the slurry.

[0039] The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For those skilled in the art of the present invention, several simple deductions and substitutions can be made without departing from the concept of the present invention, and all of these should be considered to fall within the scope of protection of the present invention.

Claims

1. A new type of slurry filtration device, characterized in that: It comprises a mixing barrel (1), a middle connecting pipe (2), a mesh screen (4), a material collecting barrel (3), and a vacuum pump (5); A motor (11) is fixedly provided at the center of the upper cover of the mixing barrel, the rotating shaft of the motor (11) extends downward into the mixing barrel, a stirring paddle (12) is provided at the lower end of the rotating shaft of the motor (11), and when the motor (11) rotates, the stirring paddle (12) is pushed downward; a loading port is also provided on the upper cover of the mixing barrel (1), and a loading cover (13) is provided at the loading port; A middle connecting pipe (2) is provided below the mixing barrel (1), and hinges (6) for movably connecting the mixing barrel (1) and the middle connecting pipe (2) are provided on the sides of the mixing barrel (1) and the middle connecting pipe (2), and a buckle (7) is provided on the side opposite to the side where the hinge is located. The mixing barrel (1) and the middle connecting pipe (2) are connected via the hinge (6) and the buckle (7); a detachable mesh screen (4) is provided between the mixing barrel (1) and the middle connecting pipe (2); A material receiving barrel (3) is connected to the lower portion of the middle connecting pipe (2), a pressure gauge (31) and a vacuum port are provided on the upper portion of the material receiving barrel (3), the vacuum pump (5) is connected to the vacuum port via a pipeline, and a discharge port (32) is provided at the bottom of the material receiving barrel (3).

2. The novel slurry filtration device according to claim 1 is characterized in that: The distance between the stirring paddle (12) and the inner wall of the mixing barrel is greater than 2 cm, and the distance between the stirring paddle (12) and the mesh screen (4) is greater than 1 cm.

3. The novel slurry filtration device according to claim 1 is characterized in that: A sealing rubber ring is also provided between the mixing barrel (1) and the middle connecting pipe (2) to ensure the sealing performance of the connection side between the mixing barrel (1) and the middle connecting pipe (2).

4. The novel slurry filtration device according to claim 1 is characterized in that: The middle connecting pipe (2) is funnel-shaped.

5. The novel slurry filtration device according to claim 1 is characterized in that: A mesh support (21) is provided at the upper end of the inner wall of the middle connecting pipe (2), and the mesh (4) is provided on the mesh support (21).

6. The novel slurry filtration device according to claim 1 is characterized in that: The horizontal positions of the pressure gauge (31) and the vacuum port are both higher than the horizontal position of the lower end of the middle connecting pipe (2).

7. The novel slurry filtration device according to claim 1 is characterized in that: The pressure gauge (31) and the vacuum port are respectively located on both sides of the central axis of the material receiving barrel.

8. The novel slurry filtration device according to claim 1 is characterized in that: The lower end of the middle connecting pipe (2) is provided with an external thread, the upper end of the material receiving barrel is provided with an internal thread, and the lower end of the middle connecting pipe is threadedly connected to the upper end of the material receiving barrel.

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