CN205216340U - Dual filter equipment of lithium ion battery thick liquids - Google Patents

Abstract

The utility model provides a dual filter equipment of lithium ion battery thick liquids, including charge -in pipeline, charge -in pipeline's the airtight intercommunication of export has the level filtering cavity of vertical setting, charge -in pipeline's export is located the upper end of level filtering cavity, fixed mounting has the level filtering net of aspect in the level filtering cavity, the airtight intercommunication of export of level filtering cavity has the connecting tube, the connecting tube slope sets up, the airtight intercommunication of lower extreme of connecting tube has the second grade of vertical setting to filter the cavity, the internal fixed mounting of second grade filter chamber has the lower extreme to seal, the second grade filter screen of drum shape, the airtight intercommunication of export that the second grade filtered the cavity upper end has ejection of compact pipeline, ejection of compact pipeline communicates with each other with the last port of second grade filter screen. The level filtering cavity includes two upper and lower branch cavitys, and the level filtering net fixed mounting dividing between the cavity from top to bottom. The inclination of connecting tube is 30 <= theta <= 80. Airtight intercommunication has the gas vent on the wall of level filtering side's off the net level filtering cavity.

Description

A double filter device for lithium ion battery slurry

technical field

The utility model relates to a battery slurry filter device, in particular to a lithium ion battery slurry double filter device.

Background technique

Lithium-ion batteries are widely used in communications, lighting, energy storage, electric vehicles, electric bicycles, and electric tools. With the continuous development of lithium-ion batteries, the requirements for positive and negative electrode materials are getting higher and higher, and the particle size of the materials is small, so it is more difficult to disperse the battery slurry. After the battery slurry is prepared, agglomerated particles, dry powder, impurities, etc. are prone to appear during the slurry transfer or shelving process. The occurrence of this phenomenon has a great impact on the coating quality, and phenomena such as scratches, exposed foil, and coating breaks will occur.

Contents of the invention

The purpose of this utility model is to provide a double filter device for lithium-ion battery slurry. The use of this device can solve the problems of agglomerated particles, dry powder, impurities, etc. that occur during the transfer and storage of slurry.

In order to achieve the above object, the technical solution adopted by the utility model is:

A double filter device for lithium-ion battery slurry, comprising a feed pipe, characterized in that the outlet of the feed pipe is airtightly connected with a vertically arranged primary filter chamber, and the outlet of the feed pipe is located at the top of the primary filter chamber At the upper end, a plane-shaped first-stage filter is fixedly installed in the first-stage filter chamber, and the outlet of the first-stage filter chamber is airtightly connected with a connecting pipe, which is arranged obliquely, and the lower end of the connecting pipe is airtightly connected with a vertically arranged second-stage filter Cavity, the secondary filter cavity is fixed with a cylindrical secondary filter with a closed lower end, and the outlet at the upper end of the secondary filter cavity is sealed and connected to a discharge pipe, which communicates with the upper port of the secondary filter .

According to the double filter device for lithium-ion battery slurry, it is characterized in that the primary filter cavity includes upper and lower sub-cavities, and the primary filter is fixedly installed between the upper and lower sub-cavities.

According to the double filter device for lithium-ion battery slurry, it is characterized in that the inclination angle of the connecting pipe is 30°≤θ≤80°.

According to the double filter device for lithium-ion battery slurry, it is characterized in that the wall of the primary filter cavity under the primary filter is sealed and communicated with an exhaust port.

According to the double filter device for lithium-ion battery slurry, it is characterized in that the primary filter includes a porous stainless steel disc, and the stainless steel disc is connected with a stainless steel screen.

According to the double filter device for lithium-ion battery slurry, it is characterized in that the secondary filter includes a cylindrical stainless steel cavity, the stainless steel cavity is porous, and a stainless steel screen is connected to the stainless steel cavity .

According to the double filter device for lithium ion battery slurry, it is characterized in that the highest position of the discharge pipe is lower than the lower edge of the primary filter.

According to the double filter device for lithium-ion battery slurry, it is characterized in that the first-stage filter cavity and the connecting pipeline are in airtight communication through the first-stage filter outlet; The above-mentioned connecting pipes are airtightly communicated through the secondary filter inlet.

According to the double filter device for lithium ion battery slurry, it is characterized in that the inclination angle of the connecting pipe is 40°.

When using the utility model, the slurry can remove large particles and disperse large agglomerated particles through the primary filtration, and can improve the agglomeration of the slurry and remove dry powder and impurities by controlling the mesh number of the sieve when the slurry passes through the secondary filtration Wait. The combination of primary and secondary filtration can effectively improve the quality of the slurry, improve the phenomenon of scratches, exposed foil and broken tape during coating, and improve the product qualification rate.

Description of drawings

Fig. 1 is the structural representation of the utility model.

In the attached picture:

1. Feed pipeline; 2. Primary filter cavity; 3. Primary filter; 4. Exhaust port; 5. Primary filter outlet; 6. Connecting pipeline; 7. Secondary filter inlet; 8. Secondary filter cavity; 9. Secondary filter; 10. Discharge pipe.

detailed description

Below in conjunction with accompanying drawing and specific embodiment the utility model is further described:

A double filter device for lithium-ion battery slurry, as shown in Figure 1, includes a feed pipe 1, the outlet of the feed pipe 1 is airtightly connected with a vertically arranged primary filter chamber 2, and the outlet of the feed pipe 1 is located at The upper end of the primary filter cavity 2, the primary filter cavity 2 is fixedly installed with a flat primary filter 3, the outlet of the primary filter cavity 2 is connected to a connecting pipe 6 in a sealed manner, and the connecting pipe 6 is arranged obliquely. The lower end of the pipeline 6 is airtightly connected with a vertically arranged secondary filter cavity 8, and a cylindrical secondary filter screen 9 with a closed lower end and a cylindrical shape is fixedly installed in the secondary filter cavity 8, and the outlet at the upper end of the secondary filter cavity 8 A discharge pipeline 10 is airtightly connected, and the discharge pipeline 10 communicates with the upper port of the secondary filter screen 9 .

The primary filter chamber 2 includes two upper and lower sub-cavities, and the primary filter screen 3 is fixedly installed between the upper and lower sub-cavities.

The inclination angle of the connecting pipe 6 is 30°≤θ≤80°.

An exhaust port 4 is airtightly connected to the wall of the primary filter cavity 2 below the primary filter 3 .

The primary filter 3 includes a porous stainless steel disc, and a stainless steel screen is connected to the stainless steel disc.

The secondary filter 9 includes a cylindrical stainless steel cavity, the stainless steel cavity is porous, and a stainless steel screen is connected to the stainless steel cavity.

The highest position of the discharge pipe 10 is lower than the lower edge of the primary filter 3 .

The primary filter cavity 2 is airtightly communicated with the connecting pipeline 6 through the primary filter outlet 5 ; the secondary filter cavity 8 is airtightly communicated with the connecting pipeline 6 through the secondary filter inlet 7 .

The inclination angle of the connecting pipe 6 is 40°.

In the utility model, the first-stage filter screen includes a porous stainless steel disc and a stainless steel screen, and the second-stage filter screen includes a cylindrical stainless steel cavity and a stainless steel screen, wherein the stainless steel cavity is porous, and the mesh size of the screen is According to the particle size of the material, such as 150 mesh, 200 mesh, etc. The connecting pipe is an inclined pipe, and the inclined angle range is 30°≤θ≤80°, which is beneficial to the flow of the slurry and the installation of the filtering device. The discharge pipe is lower than the lower edge of the primary filter screen.

The slurry enters the first-stage filter chamber from the feed pipe, and removes large slurry particles and dispersed large aggregated particles through the first-stage filter. When the slurry has a high viscosity and falls slowly, it can be connected to a vacuum through the exhaust port. The device accelerates the slurry to pass through the first-stage filter, and the slurry enters the connecting pipe from the outlet of the first-stage filter after passing through the first-stage filter. In this embodiment, the inclination angle of the connecting pipe is 40°. The slurry enters the secondary filter cavity from the secondary filter inlet. The secondary filter in the cavity is a tubular filter device, including a cylindrical stainless steel cavity and a stainless steel screen. The stainless steel cavity is porous and adopts The stainless steel mesh mesh is 180 mesh. The slurry flows out from the discharge pipe after passing through the secondary filter. After the slurry is double-filtered, the problem of agglomeration during the storage and transfer of the slurry is effectively improved, and the influence of dry powder and impurities in the slurry on the coating quality is completely eliminated.

Claims (9)

1. A double filter device for lithium-ion battery slurry, including a feed pipe (1), characterized in that the outlet of the feed pipe (1) is sealed and communicated with a vertically arranged primary filter cavity (2), and the inlet The outlet of the material pipeline (1) is located at the upper end of the primary filter cavity (2), and a flat primary filter (3) is fixedly installed in the primary filter cavity (2), and the primary filter cavity (2) There is a connecting pipe (6) in the airtight connection at the outlet of the connecting pipe (6). A cylinder-shaped secondary filter (9) with a closed lower end is fixed inside, and the outlet at the upper end of the secondary filter cavity (8) is sealed and connected to a discharge pipe (10). The discharge pipe (10) is connected to the secondary filter The upper ports of the net (9) are connected. 2. A double filter device for lithium-ion battery slurry according to claim 1, characterized in that the primary filter cavity (2) includes two upper and lower sub-cavities, and the primary filter (3 ) is fixedly installed between the upper and lower sub-cavities. 3 . The double filtration device for lithium ion battery slurry according to claim 2 , characterized in that, the inclination angle of the connecting pipe ( 6 ) is 30°≤θ≤80°. 4. The double filter device for lithium ion battery slurry according to claim 3, characterized in that the wall of the primary filter cavity (2) under the primary filter (3) is airtightly communicated with There is an exhaust port (4). 5. A double filter device for lithium ion battery slurry according to claim 4, characterized in that the primary filter (3) comprises a porous stainless steel disc, and a stainless steel screen is connected to the stainless steel disc . 6. A double filter device for lithium-ion battery slurry according to claim 5, characterized in that, the secondary filter (9) includes a cylindrical stainless steel cavity, the stainless steel cavity is porous, and the stainless steel cavity is porous. The cavity is connected with a stainless steel screen. 7 . The double filter device for lithium ion battery slurry according to claim 6 , wherein the highest position of the discharge pipe ( 10 ) is lower than the lower edge of the primary filter ( 3 ). 8 . 8. A lithium-ion battery slurry double filter device according to claim 7, characterized in that, the primary filter cavity (2) and the connecting pipe (6) pass through the primary filter outlet ( 5) Airtight communication; the secondary filter cavity (8) is airtightly communicated with the connecting pipe (6) through the secondary filter inlet (7). 9. A lithium-ion battery slurry double filter device according to claim 8, characterized in that, the inclination angle of the connecting pipe (6) is 40°.