Pressure reducing bonnet for gap coating valve

Abstract

The utility model relates to the technical field of gap coating valve, disclose a kind of pressure reducing valve cover for gap coating valve, including inner cover, fixed ring is fixedly connected in the inner cover inner wall, outer cover is fixedly connected in the inner cover outer wall, the outer wall of outer cover is equipped with a plurality of through slot, the bottom fixed connection of inner cover is fixedly connected with conical block, the bottom fixed connection of conical block is fixedly connected with extension cylinder, the diameter of inner cover is 25mm, the outer diameter of fixed ring is 10mm, the inner diameter of fixed ring is 8.5mm, the outer wall of through slot is equipped with 4 along the outer wall 90 degrees circular array of outer cover, the diameter of outer cover is 42mm, the length width height of through slot is 8.5mm, 3.0mm and 2mm respectively, the inner wall of conical block and extension cylinder is equipped with the groove with the same length as the inner diameter of fixed ring.

Description

Technical Field

[0001] This utility model relates to the field of gap coating valve technology, and in particular to a pressure reducing valve cover for a gap coating valve. Background Technology

[0002] A gap coating valve is a type of valve used in precision coating processes. It is primarily used to control the amount of coating material applied to a substrate. During the coating process, the coating material needs to be applied to the substrate in a precise amount. The gap coating valve controls the flow rate of the coating material by adjusting the gap size through which the coating material flows, thereby achieving precise coating.

[0003] In existing technologies, gap coating valves typically play a crucial role in the coating process, controlling the flow rate and gap of the coating material, directly affecting the coating quality. The valve cap, as an important component of the gap coating valve, significantly impacts the overall function of the valve. However, the current shape of the valve cap in coating valve assemblies often leads to high backflow resistance, severely affecting the longitudinal thickness of the electrode at both ends after coating. This can cause electrode breakage at the head after rolling, and in severe cases, reduce the internal pores of the active material in the electrode, resulting in poor battery performance.

[0004] In response to this technical problem, this application proposes a pressure reducing valve cover for a gap coating valve. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a pressure-reducing valve cover for a gap coating valve. Through the provided through groove, the backflow resistance of the slurry between the coating valve and the return valve is improved, the pressure of the slurry in the coating valve and the die cavity is improved, and thus the uniformity of the electrode surface density is improved.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A pressure reducing valve cover for a gap coating valve includes an inner cover, a retaining ring fixedly connected to the inner wall of the inner cover, an outer cover fixedly connected to the outer wall of the inner cover, and a plurality of through grooves formed on the outer wall of the outer cover.

[0008] Furthermore, a conical block is fixedly connected to the bottom end of the inner cover, and an extension tube is fixedly connected to the bottom end of the conical block.

[0009] Furthermore, the inner cover has a diameter of 25 mm.

[0010] Furthermore, the outer diameter of the fixing ring is 10 mm, and the inner diameter of the fixing ring is 8.5 mm.

[0011] Furthermore, four through slots are arranged in a 90-degree circular array along the outer wall of the outer cover.

[0012] Furthermore, the outer cover has a diameter of 42mm, and the length, width, and height of the through groove are 8.5mm, 3.0mm, and 2mm, respectively.

[0013] Furthermore, the inner wall of the conical block and the extension cylinder is provided with a groove of the same length as the inner diameter of the fixing ring.

[0014] Furthermore, the height of the extension tube is 1.4 mm.

[0015] This utility model has the following beneficial effects:

[0016] 1. In this utility model, the through groove can improve the backflow resistance of the slurry in the coating valve and the return valve, improve the slurry pressure in the coating valve and the die cavity, and thus improve the uniformity of the electrode surface density.

[0017] 2. In this utility model, the conical block at the bottom of the inner cover and the extension cylinder are used as a sealing structure between the valve cover and the valve body to ensure that no slurry leakage occurs during high-pressure or high-speed coating. Attached Figure Description

[0018] Figure 1 This is a perspective view of a pressure reducing valve cover for a gap coating valve proposed in this utility model.

[0019] Figure 2 This is a top view of a pressure reducing valve cover for a gap coating valve proposed in this utility model;

[0020] Figure 3 This is a cross-sectional view of a pressure reducing valve cover for a gap coating valve proposed in this utility model.

[0021] Legend:

[0022] 1. Inner cover; 2. Fixing ring; 3. Conical block; 4. Extension tube; 5. Outer cover; 6. Through groove. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Reference Figures 1-2An embodiment of this utility model provides a pressure reducing valve cover for a gap coating valve, comprising an inner cover 1, a fixing ring 2 fixedly connected to the inner wall of the inner cover 1, an outer cover 5 fixedly connected to the outer wall of the inner cover 1, and multiple through grooves 6 formed on the outer wall of the outer cover 5. The inner cover 1 has a diameter of 25mm, the fixing ring 2 has an outer diameter of 10mm and an inner diameter of 8.5mm, and four through grooves 6 are formed in a 90-degree circular array along the outer wall of the outer cover 5. The outer cover 5 has a diameter of 42mm, and the length, width, and height of the through grooves 6 are 8.5mm, 3.0mm, and 2mm, respectively.

[0025] Specifically, the through-slot 6 allows the slurry to flow more smoothly during recirculation, thereby reducing recirculation resistance. Reduced recirculation resistance improves the response speed of the coating valve, making flow rate and coating gap adjustments more sensitive. It also reduces pressure loss of the slurry within the pipeline, improving coating efficiency. The through-slot 6 alters the slurry flow path, resulting in a more uniform distribution of the slurry between the coating valve and the die cavity, thus balancing the slurry pressure. This improves coating uniformity, reduces uneven electrode surface density, prevents localized reduction in the porosity of the active material within the electrode, and enhances battery performance. By improving recirculation resistance and slurry pressure, the coating becomes more uniform, thereby improving the consistency of electrode surface density. Improved electrode surface density consistency reduces the risk of electrode breakage, increases electrode yield, and ultimately improves battery consistency and performance.

[0026] Reference Figure 1 and Figure 3 The bottom of the inner cover 1 is fixedly connected to a conical block 3, and the bottom of the conical block 3 is fixedly connected to an extension cylinder 4. The inner walls of the conical block 3 and the extension cylinder 4 are provided with grooves of the same length as the inner diameter of the fixing ring 2. The height of the extension cylinder 4 is 1.4mm.

[0027] Specifically, the retaining ring 2 is used to fasten the valve stem, while the conical block 3 at the bottom of the inner cover 1 and the extension cylinder 4 work together to form a sealing structure between the valve cover and the valve body, ensuring that no slurry leakage occurs during high-pressure or high-speed coating.

[0028] Working principle: The retaining ring 2 is used to fasten the valve stem, and the conical block 3 and extension cylinder 4 at the bottom of the inner cover 1 are used for the sealing structure between the valve cover and the valve body to ensure that no slurry leakage occurs during high pressure or high speed coating.

[0029] The through groove 6 allows the slurry to flow more smoothly during recirculation, thereby reducing recirculation resistance. Reducing recirculation resistance can improve the response speed of the coating valve, making the adjustment of flow rate and coating gap more sensitive, reducing the pressure loss of slurry in the pipeline, and improving coating efficiency.

[0030] The designed through-slot 6 alters the slurry flow path, resulting in a more uniform distribution of the slurry between the coating valve and the die cavity, thus balancing the slurry pressure. This improves coating uniformity, reduces uneven electrode surface density, prevents localized reduction in the internal porosity of the active material in the electrode, and enhances battery performance.

[0031] By improving the reflux resistance and slurry pressure, the coating becomes more uniform, thereby improving the consistency of the electrode surface density. Improved electrode surface density consistency can reduce the risk of electrode breakage, increase the electrode yield, and improve the consistency and performance of the battery.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pressure reducing valve cover for a gap coating valve, comprising an inner cover (1), characterized in that: The inner cover (1) has a fixed ring (2) fixedly connected to its inner wall, and an outer cover (5) fixedly connected to its outer wall. The outer cover (5) has multiple through grooves (6) on its outer wall.

2. The pressure reducing valve cover for a gap coating valve according to claim 1, characterized in that: The bottom end of the inner cover (1) is fixedly connected to a conical block (3), and the bottom end of the conical block (3) is fixedly connected to an extension tube (4).

3. The pressure reducing valve cover for a gap coating valve according to claim 1, characterized in that: The inner cover (1) has a diameter of 25 mm.

4. The pressure reducing valve cover for a gap coating valve according to claim 1, characterized in that: The outer diameter of the fixing ring (2) is 10 mm, and the inner diameter of the fixing ring (2) is 8.5 mm.

5. A pressure-reducing valve cover for a gap coating valve according to claim 1, characterized in that: The outer wall of the through groove (6) has four openings arranged in a 90-degree circular array along the outer wall of the outer cover (5).

6. A pressure-reducing valve cover for a gap coating valve according to claim 1, characterized in that: The outer cover (5) has a diameter of 42 mm, and the through groove (6) has a length, width, and height of 8.5 mm, 3.0 mm, and 2 mm, respectively.

7. A pressure-reducing valve cover for a gap coating valve according to claim 2, characterized in that: The inner walls of the conical block (3) and the extension cylinder (4) are provided with grooves of the same length as the inner diameter of the fixing ring (2).

8. A pressure-reducing valve cover for a gap coating valve according to claim 2, characterized in that: The height of the extension tube (4) is 1.4 mm.

Images