A stably mounted valve seat

Abstract

This utility model provides a stable valve seat, including a valve seat body. The valve seat body has a conical hole at the top and a straight hole at the bottom. The conical hole and the straight hole are coaxial and connected. The wall of the conical hole and the conical surface of the valve core mate to form a sealing surface. The valve seat body has a flange and a mounting conical surface on its exterior. The flange has a mounting hole, and the mounting conical surface is located below the flange, extending downwards to the bottom surface of the valve seat body. The mounting conical surface matches the conical mounting hole of the valve body. In this utility model, the valve seat is provided with a mounting conical surface that closely fits the conical hole surface of the valve body, improving the installation stability of the valve seat and ensuring the service life of the valve.

Description

Technical Field

[0001] This utility model belongs to the field of valve manufacturing, and in particular relates to a valve seat that can be installed stably. Background Technology

[0002] The gate valve includes a valve body, a valve seat, and a valve core. The valve seat is provided with a mounting hole, which is a straight hole structure. The mounting hole is connected to the medium flow channel provided in the valve body. The valve seat is provided with a flange. The outer surface of the valve seat is a cylindrical surface that can be inserted into the mounting hole. The flange and the valve body are connected and fixed with screws to achieve the fixation of the valve seat and the valve body.

[0003] However, in conventional gate valve structures, since both the valve seat and the mounting hole wall are cylindrical, after the valve seat is inserted into the mounting hole, there is a gap between the outer surface of the valve seat and the mounting hole wall. This prevents the outer surface of the valve seat from fitting tightly with the mounting hole, causing the conveying medium to flow into this gap and form eddies that impact the valve seat, resulting in an unstable valve seat installation. In addition, since the medium usually flows rapidly in the pipeline, when it flows through the straight hole of the valve seat, it impacts the straight hole wall, affecting the stability of the valve seat installation. Utility Model Content

[0004] In view of this, the present invention aims to provide a valve seat for stable installation in order to improve the installation stability of the valve seat.

[0005] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0006] A valve seat for stable installation includes a valve seat body. The valve seat body has a tapered hole at the top and a straight hole at the bottom. The tapered hole and the straight hole are coaxial and connected. The wall of the tapered hole and the conical surface of the valve core cooperate to form a sealing surface. The valve seat body has a flange and a mounting tapered surface on its exterior. The flange has a mounting hole. The mounting tapered surface is located below the flange and extends downward to the bottom surface of the valve seat body. The mounting tapered surface matches the tapered mounting hole of the valve body.

[0007] Furthermore, a distance is left between the flange and the top of the valve seat body.

[0008] Furthermore, a positioning ring groove is formed on the bottom surface of the flange, and the mounting hole extends through the bottom of the positioning ring groove.

[0009] Furthermore, several guide grooves are vertically formed on the wall of the straight hole, and the top of the guide grooves protrudes from the lower end of the wall of the conical hole.

[0010] Furthermore, the guide groove is a semi-circular groove, and its groove wall and the straight hole wall are smoothly transitioned.

[0011] Furthermore, the straight hole wall and the tapered hole wall have a smooth transition.

[0012] Furthermore, the lower end of the straight hole is provided with a rounded corner structure.

[0013] Compared with the prior art, the valve seat with stable installation described in this utility model has the following advantages:

[0014] (1) In this utility model, the valve seat is provided with an installation cone surface that is in close contact with the cone hole surface of the valve body, thereby improving the installation stability of the valve seat and ensuring the service life of the shut-off valve.

[0015] (2) In this utility model, the setting of the guide groove on the straight hole wall inside the valve seat increases the contact area between the flowing liquid and the straight hole, reduces the impact force of the liquid on the valve seat, and improves the installation stability of the valve seat. Attached Figure Description

[0016] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0017] Figure 1 This is a front view of a valve seat with stable installation according to an embodiment of the present utility model;

[0018] Figure 2 This is a top view of a valve seat that is stably installed according to an embodiment of the present utility model;

[0019] Figure 3 This is a structural diagram of the valve seat and valve body installation described in this embodiment.

[0020] Explanation of reference numerals in the attached figures:

[0021] 1-Valve seat body; 11-Mounting conical surface; 12-Flange part; 14-Conical hole; 15-Guide groove; 16-Mounting hole; 121-Positioning ring groove; 17-Straight hole; 18-Rounded corner structure; 3-Rubber pad; 4-Screw. Detailed Implementation

[0022] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0023] like Figure 1 , Figure 2As shown, a stably installed valve seat includes a valve seat body 1, which is cylindrical in shape. A conical hole 14 is formed at the center of its top, and a straight hole 17 is formed at the center of its bottom. The conical hole 14 and the straight hole 17 are coaxial and connected. The walls of the straight hole 17 and the conical hole 14 have a smooth transition. The lower end of the straight hole 17 is the inlet, and it has a rounded corner structure 18. The conical hole 14 is the outlet. The wall of the conical hole and the conical surface of the valve core cooperate to form a sealing surface. The outer surface of the valve seat body 1 includes a cylindrical surface and a mounting conical surface 11. The cylindrical surface is located above the mounting conical surface 11, which extends downward to the bottom surface of the valve seat body 1. The mounting conical surface 11 matches the conical mounting hole of the valve body. A flange portion 12 is provided at a certain distance from the top of the valve seat body 1 on the cylindrical surface. The flange portion 12 has a mounting hole 16, through which the valve seat and the valve body are connected and fixed.

[0024] In this utility model, the valve seat is provided with a mounting conical surface 11. When the valve seat and the valve body 2 are connected, the mounting conical surface 11 fits against the wall of the conical mounting hole of the valve body, and the valve seat and the conical mounting hole are connected without gaps. Figure 3 As shown, the flange 12 and valve body 2 are fixed with screws 4, and a rubber gasket 3 is placed between the flange 12 and valve body 2 to achieve stable installation of the valve seat. In addition, a certain distance is left between the flange 12 and the top of the valve seat, that is, there is a certain distance between the valve seat outlet and the flange 12. When the liquid flows out of the outlet, the impact force on the flange 12 will be reduced, thereby ensuring the installation stability of the flange 12.

[0025] In this invention, a positioning ring groove 121 is formed on the bottom surface of the flange 12 corresponding to the rubber pad 3, and the mounting hole extends through the bottom of the positioning ring groove 121. The positioning ring groove 121 positions the rubber pad 3 to facilitate the connection and fixation of the valve seat, the rubber pad 3, and the valve body.

[0026] In this invention, several guide grooves 15 are vertically formed on the wall of the straight hole 17, with the top of each guide groove 15 protruding from the lower end of the wall of the conical hole 14. The guide grooves 15 are semi-circular, and their walls smoothly transition into the wall of the straight hole 17. The guide grooves 15 increase the contact area between the liquid and the wall of the straight hole 17, reducing the impact force of the liquid on the valve seat and further improving the installation stability of the valve seat.

[0027] This utility model improves the valve body structure. The installation of the conical surface 11, the guide groove 15, and the rounded corner structure 18 can all improve the installation stability of the valve seat.

[0028] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. 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 valve seat for stable installation, characterized in that: The valve seat body (1) includes a valve seat body (1) with a conical hole (14) at the top and a straight hole (17) at the bottom. The conical hole (14) and the straight hole (17) are coaxial and connected. The hole wall of the conical hole (14) and the conical surface of the valve core cooperate to form a sealing surface. The valve seat body (1) is provided with a flange (12) and a mounting conical surface (11) on the outside. The flange (12) is provided with a mounting hole (16). The mounting conical surface (11) is located below the flange (12) and extends downward to the bottom surface of the valve seat body (1). The mounting conical surface (11) matches the conical mounting hole of the valve body.

2. The valve seat for stable installation according to claim 1, characterized in that: There is a distance between the flange (12) and the top of the valve seat body (1).

3. The valve seat for stable installation according to claim 1, characterized in that: The flange (12) has a positioning ring groove (121) on its bottom surface, and the mounting hole extends out of the bottom of the positioning ring groove (121).

4. A valve seat for stable installation according to claim 1, characterized in that: The straight hole (17) has several vertically formed guide grooves (15) on its wall, and the top of the guide grooves (15) extends out from the lower end of the wall of the conical hole (14).

5. A valve seat for stable installation according to claim 4, characterized in that: The guide groove (15) is a semi-circular groove, and its groove wall and the straight hole (17) hole wall are smoothly transitioned.

6. A valve seat for stable installation according to claim 1, characterized in that: The walls of the straight hole (17) and the tapered hole (14) are smoothly transitioned.

7. A valve seat for stable installation according to claim 1, characterized in that: The lower end of the straight hole (17) is provided with a rounded corner structure (18).

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