High-purity gas filtering sintering net cap

Abstract

The utility model discloses a high-purity gas filtering sintering net cap, which relates to the field of gas filtering, aims to solve the problems of low strength and poor firmness in the prior art, and adopts the technical scheme that the high-purity gas filtering sintering net cap comprises a reinforcing layer, a filtering layer and a protective layer which are all of cap-shaped structures, and the protective layer and the reinforcing layer are respectively arranged on the inner side and the outer side of the filtering layer. Meshes are formed in the filter layer, the protective layer and the reinforcing layer, and the density of the meshes of the filter layer, the protective layer and the reinforcing layer is gradually reduced. By adopting the cap-shaped structure, the contact area between the filter layer and the mounting position can be increased, so that the overall stability is improved; the protection layer can form primary protection on the filtering layer, and the reinforcing layer can increase the overall strength and prevent the filtering layer from deforming.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas filter technical field, concretely is a kind of high-purity gas filter sintered mesh net cap. BACKGROUND

[0002] The existence of dust particles in traditional high-purity gas makes the gas purity not enough, seriously affects the quality of the downstream product, and makes the component preparation process unstable and the yield of finished products reduced. Therefore, excluding dust particles from polluting high-purity gas is an essential important work in gas cleaning technology. The traditional mesh filter has small supporting area, low strength and poor firmness, and the mesh filter is prone to deformation during the filtering process, which causes gaps in the contact surface and poor filtering effect. SUMMARY

[0003] The utility model solves the technical problems of overcoming the defects of the prior art and providing a high-purity gas filter sintered mesh net cap, which can effectively solve the problems in the background art.

[0004] To achieve the above purpose, the utility model discloses a kind of high-purity gas filter sintered mesh net cap, the technical scheme is, including filter layer, the filter layer includes filter mesh, there is mesh on the filter mesh, the filter layer The filter mesh periphery has a fence, by setting fence, the contact area of filter mesh and mounting position can be increased, so as to improve the stability of the entire filter layer, ensure that it is not easy to shift;The inside of the filter layer is provided with a protective layer, and the outside is provided with a reinforcing layer, the protective layer is lined on the inside of the filter layer, the reinforcing layer is coated on the outside of the filter layer, mesh holes are formed on the reinforcing layer and the protective layer, and the mesh density of the filter layer, the protective layer and the reinforcing layer gradually decreases. The protective layer can form primary filtration to prevent large particles of dust from directly impacting on the filter layer, and the reinforcing layer can increase the strength of the entire net cap and is not prone to deformation when it is impacted by high-pressure gas flow.

[0005] As a preferred technical scheme of the utility model, the filter mesh of the filter layer and the fence are integrally formed, the integrally formed structure can make the overall strength higher, and the filter mesh and the fence form a cap-shaped structure, which is more stable when buckled in the pipe opening of the high-pressure valve body.

[0006] As a preferred technical scheme of the utility model, the reinforcing layer and the protective layer are both integrally formed layers, and the integrally formed structure can make the overall strength higher. Both of them are cap-shaped structures, which are more stable when buckled in the pipe opening of the high-pressure valve body.

[0007] As a preferred technical scheme of the utility model, the mesh density of the reinforcing layer is 10-20 mesh, the mesh density of the protective layer is 50-60 mesh, and the mesh density of the filter layer is 300-600 mesh.

[0008] As a preferred technical scheme of the utility model, the reinforcing layer and the protective layer are both stainless steel nets, and the filter layer is a special stainless steel net.

[0009] Compared with the prior art, the utility model has the beneficial effects that: the utility model sets the fence outside the filter screen of the filter layer, can increase the contact area of the filter layer and the installation position, thereby increasing the overall stability; sets the protective layer on the inner side of the filter layer, can prevent the direct high-speed impact of large-particle dust particles on the filter layer, thereby protecting the filter layer; sets the reinforcing layer on the outer side of the filter layer, can improve the overall structure of the net cap, thereby maintaining its own form when it is subjected to the continuous impact of high-pressure gas flow, improving the overall strength, and further improving the gas filtration effect, ensuring the product purity. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 It is the structure schematic view of the utility model Figure One ;

[0011] Figure 2 It is the structure schematic view of the utility model Figure Two ;

[0012] Figure 3 It is the structure front view of the utility model;

[0013] Figure 4 It is the structure schematic view of the utility model A-A section;

[0014] Figure 5 It is the structure schematic view of the filter layer of the utility model Figure One ;

[0015] Figure 6 It is the structure schematic view of the filter layer of the utility model Figure Two .

[0016] In the drawing: 1, reinforcing layer;2, protective layer;3, filter layer;301, filter screen;302, fence. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model. Embodiment 1

[0018] As Figures 1 to 6As shown, the first embodiment of the utility model discloses the technical scheme that the utility model adopts, comprising reinforcing layer 1, protective layer 2 and filter layer 3, three are cap-shaped structure, its main part is filter layer 3, as if Figure 5 、 Figure 6 As shown, filter layer 3 includes filter screen 301 and enclosure 302, filter screen 301 is circular sheet structure, enclosure 302 is circular pipe structure, the edge of filter screen 301 is connected at the end of enclosure 302, and the fillet transition is connected, so that filter screen 301 and enclosure 302 form a cap-shaped structure, filter layer 3 is 316L special stainless steel mesh, and the mesh density thereof is 600 meshes, in order to form protection to filter layer 3, to prevent large particle size dust particles or other impurities from high-speed impact on filter layer 3, causing damage to filter layer 3, a cap-shaped protective layer 2 is arranged on the inner side of filter layer 3, the protective layer 2 is 316L stainless steel mesh, and the mesh density thereof is 60 meshes, and filter layer 3 is directed towards the protective layer 2, in order to prevent airflow impact during the filtering process, a cap-shaped reinforcing layer 1 is wrapped on the outer side of filter layer 3, and the reinforcing layer 1 is 316L stainless steel mesh, and the mesh density thereof is 20 meshes.

[0019] The processing method of the high-purity gas filtering sintered mesh cap includes the following steps: 20-mesh stainless steel mesh, 600-mesh special stainless steel mesh and 60-mesh stainless steel mesh are respectively cut by laser to obtain 20-mesh circular stainless steel mesh, 600-mesh circular special stainless steel mesh and 60-mesh circular stainless steel mesh; after the three are stacked, they are sintered into one body; a stamping die is used for stamping, the male die of the stamping die is connected with the 60-mesh circular stainless steel mesh, and the female die is connected with the 20-mesh circular stainless steel mesh; after stamping, the skirt edge is trimmed by turning.

[0020] The working principle of the utility model is as follows:

[0021] The protective layer 2 of the high-purity gas filtering sintered mesh cap is directed towards the airflow, and is loaded into the high-pressure valve body, connected with the high-pressure valve body, and a connecting pipe is installed at the pipe opening, the pipe diameter of the connecting pipe is smaller than the inner diameter of the high-pressure valve pipe opening, and the connecting pipe and the high-pressure valve pipe opening are locked by a nut, so that the high-purity gas filtering sintered mesh cap is pressed tightly at the pipe opening of the high-pressure valve body by the nut and the connecting pipe, and the installation is completed. Example 2

[0022] The difference between the embodiment and example 1 is that the mesh density of the reinforcing layer 1 is 10 meshes, the mesh density of the protective layer 2 is 50 meshes, and the mesh density of the filter layer 3 is 300 meshes. Example 3

[0023] The difference between the embodiment and example 1 is that the mesh density of the reinforcing layer 1 is 15 meshes, the mesh density of the protective layer 2 is 55 meshes, and the mesh density of the filter layer 3 is 400 meshes.

[0024] The mechanical connection is a common means adopted by the person skilled in the art, and can be obtained through limited tests, and belongs to the common general knowledge.

[0025] Components not described in detail herein are prior art.

[0026] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A high-purity gas filtering sintered mesh net cap comprising a filtering layer (3), the filtering layer (3) comprising a filtering mesh sheet (301) with mesh holes thereon, characterized in that: The filter layer (3) is surrounded by a fence (302); the filter layer (3) is internally provided with a protective layer (2) and externally provided with a reinforcing layer (1), the protective layer (2) is lined on the inner side of the filter layer (3), the reinforcing layer (1) is coated on the outer side of the filter layer (3), the reinforcing layer (1) and the protective layer (2) are both provided with mesh holes, and the mesh hole density of the filter layer (3), the protective layer (2) and the reinforcing layer (1) gradually decreases.

2. The high-purity gas filter sintered mesh net cap of claim 1, wherein: The filter mesh (301) and the fence (302) of the filter layer (3) are integrally formed, and the filter mesh (301) and the fence (302) form a cap-shaped structure.

3. The high-purity gas filter sintered mesh net cap of claim 1, wherein: The reinforcing layer (1) and the protective layer (2) are both integrally formed layers and both have a cap-shaped structure.

4. The high-purity gas filter sintered mesh net cap of claim 1, wherein: The mesh hole density of the reinforcing layer (1) is 10-20 meshes; the mesh hole density of the protective layer (2) is 50-60 meshes; and the mesh hole density of the filter layer (3) is 300-600 meshes.

5. The high-purity gas filter sintered mesh net cap according to claim 1 or 4, characterized in that: The reinforcing layer (1) and the protective layer (2) are both stainless steel meshes, and the filter layer (3) is a special stainless steel mesh.

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