Flexible wedge type valve clack
By using flexible wedge valve discs processed and formed by forgings, flexible grooves and guide grooves are designed, which solves the problem of easily defective casting materials, improves sealing performance and product quality, and simplifies the processing technology.
Patent Information
- Application Number
- CN202421473136.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-25
- Publication Date
- 2025-03-07
- Estimated Expiration
- 2034-06-25
AI Technical Summary
The valve discs of the existing wedge-type single-gate gate valves are prone to casting defects, such as cracks, air holes, sand holes, etc., which affect product quality and sealing performance.
The flexible wedge valve disc processed by forgings is designed with flexible groove A and flexible groove B to ensure that the valve disc has good elasticity. Through the design of the guide groove and the T-shaped groove, the valve disc can be closely fitted with the valve seat sealing surface.
The defects of castings are avoided, the material quality and sealing performance of the valve disc are improved, the processing technology is simplified, and the manufacturing cost is reduced.
Smart Images
Figure CN222577374U_ABST
Abstract
Description
Technical Field
[0001] The invention relates to a flexible wedge-type valve flap which can be used for a wedge-type elastic single-disc gate valve. Background Art
[0002] In order to ensure that the wedge-type single-disc gate valve has good sealing performance, at present, the valve disc of the wedge-type single-disc gate valve is mostly designed as an elastic gate with good elasticity, so that the wedge angle between the sealing surfaces on both sides can be adjusted to ensure that the valve disc fits tightly with the valve seat when the valve is closed, so as to achieve good sealing performance. Therefore, the elastic gate is generally made of castings. However, due to the limitations of casting technology, the quality of castings is unstable, and casting defects such as cracks, pores, sand holes, and looseness often occur, which will seriously affect the product quality. The structure of the elastic gate is relatively complex, and it is difficult to process it with forgings, and the processing cost is high.
[0003] The present invention provides a flexible wedge-type valve flap, which is formed by forging. The flexible wedge-type valve flap is provided with two flexible grooves, so that the valve flap has good elasticity, and the wedge angle between the valve flap sealing surfaces can be adjusted to ensure that the valve flap and the valve seat sealing surface are closely fitted to achieve good sealing performance. The flexible wedge-type valve flap of the present invention has a simple processing technology. At the same time, the flexible wedge-type valve flap adopts forgings, which avoids the defects caused by castings and greatly improves the valve flap quality and the sealing performance of the valve. Summary of the invention
[0004] The present invention provides a flexible wedge-type valve flap, including a wedge-shaped valve flap body, on which a guide groove, a flexible groove B, a flexible groove A, a T-shaped groove, a sealing surface A, and a sealing surface B are arranged. The wedge-shaped valve flap body is formed by forging, thereby avoiding defects caused by castings; the flexible groove B and the flexible groove A ensure that the valve flap has good elasticity, thereby greatly improving the sealing performance and quality of the valve.
[0005] The T-slot is arranged at the top of the wedge-shaped valve disc body, the sealing surface A and the sealing surface B are symmetrically arranged on the left and right sides of the wedge-shaped valve disc body, the flexible groove A and the flexible groove B are also arranged on the left and right sides of the wedge-shaped valve disc body, the flexible groove A is parallel to the sealing surface A, and the flexible groove B is parallel to the sealing surface B; the flexible groove A and the flexible groove B penetrate the bottom edge of the T-slot upwardly and penetrate the bottom edge of the wedge-shaped valve disc body downwardly; the ends of the flexible groove A and the flexible groove B are both provided with a circle R, the end depths of the flexible groove A and the flexible groove B are the same, the ends exceed the horizontal center line of the wedge-shaped valve disc body, and do not exceed 1 / 4H.
[0006] The two guide grooves are symmetrically arranged on the front and rear sides of the wedge-shaped valve disc body, arranged symmetrically along the longitudinal center line, and perpendicular to the T-shaped groove. The guide grooves guide the valve disc to move up and down.
[0007] The beneficial effects of the present invention are that the flexible wedge-type valve flap is made of forgings, avoiding the defects of castings and greatly improving the material quality of the valve flap; the flexible wedge-type valve flap is provided with two flexible grooves, which has good elasticity, so that the wedge angle of the valve flap can be adjusted, ensuring that the valve flap and the valve seat sealing surface are closely fitted to achieve good sealing. The processing technology of the flexible groove is simple and the manufacturing cost is low. BRIEF DESCRIPTION OF THE DRAWINGS
[0008] Figure 1 It is a schematic diagram of the structure of a flexible wedge-type valve disc;
[0009] Figure 2 yes Figure 1 AA section view;
[0010] Figure 3 yes Figure 1 BB cross-sectional view;
[0011] Figure 4 yes Figure 1 CC cross-sectional view.
[0012] In the figure, 1. wedge-shaped valve disc body, 2. T-shaped groove, 3. guide groove, 4. flexible groove B, 5. sealing surface B, 6. flexible groove A, 7. sealing surface A DETAILED DESCRIPTION
[0013] exist Figure 1 , Figure 2 , Figure 3 , Figure 4 In the illustrated embodiment, the flexible wedge-type valve flap of the present invention comprises a wedge-shaped valve flap body 1, on which a guide groove 3, a flexible groove B4, a flexible groove A6, a T-shaped groove 2, a sealing surface A7, and a sealing surface B5 are arranged. The T-shaped groove 2 is arranged at the top of the wedge-shaped valve flap body 1, the sealing surface A7 and the sealing surface B5 are symmetrically arranged on the left and right sides of the wedge-shaped valve flap body 1, and the flexible groove A6 and the flexible groove B4 are also arranged on the left and right sides of the wedge-shaped valve flap body 1.
[0014] The flexible groove A6 is parallel to the sealing surface A7, and the flexible groove B4 is parallel to the sealing surface B5; the flexible groove A6 and the flexible groove B4 penetrate the bottom edge of the T-shaped groove 2 upward and penetrate the bottom edge of the wedge-shaped valve disc body 1 downward; a circle R is set at the end of the flexible groove A6 and the flexible groove B4, and the end depths of the flexible groove A6 and the flexible groove B4 are the same, both exceeding the horizontal center line of the wedge-shaped valve disc body 1 and not exceeding 1 / 4H.
[0015] The flexible groove A6 and the flexible groove B4 make the flexible wedge-type valve disc have good elasticity, so that the wedge angle between the sealing surface A7 and the sealing surface B5 of the valve disc can be adjusted, thereby ensuring that the valve disc and the valve seat sealing surface are closely fitted to achieve good sealing performance.
[0016] Two guide grooves 3 are symmetrically arranged on the front and rear sides of the wedge-shaped valve disc body 1, arranged symmetrically along the longitudinal center line, and perpendicular to the T-shaped groove 2. The guide grooves 3 guide the valve disc to move up and down.
[0017] The wedge-shaped valve disc body 1 is formed by forging, has high strength, and is free of casting defects such as cracks, pores, sand holes, and looseness, thereby greatly improving product quality and sealing performance.
[0018] The processing technology of the flexible groove A 6 and the flexible groove B 4 is simple and the manufacturing cost is low.
Claims
1. A flexible wedge-shaped valve flap, comprising a wedge-shaped valve flap body (1), characterized in that: The wedge-shaped valve flap body (1) is provided with a guide groove (3), a flexible groove B (4), a flexible groove A (6), a T-shaped groove (2), a sealing surface A (7), and a sealing surface B (5); the T-shaped groove (2) is provided at the top end of the wedge-shaped valve flap body (1); the sealing surface A (7) and the sealing surface B (5) are symmetrically provided on the left and right sides of the wedge-shaped valve flap body (1); the flexible groove A (6) and the flexible groove B (4) are also provided on the left and right sides of the wedge-shaped valve flap body (1); the flexible groove A (6) is parallel to the sealing surface A (7); the flexible groove B (4) is parallel to the sealing surface B (5); the ends of the flexible groove A (6) and the flexible groove B (4) are provided with a circle R; the ends of the flexible groove A (6) and the flexible groove B (4) have the same depth, both exceeding the horizontal center line of the wedge-shaped valve flap body (1) and not exceeding 1 / 4H; the guide groove (3) is symmetrically provided on the front and rear sides of the wedge-shaped valve flap body (1).
2. A flexible wedge-type valve flap according to claim 1, characterized in that: The wedge angle a between the sealing surface A (7) and the sealing surface B (5) is 6 to 10 degrees.
3. A flexible wedge-type valve flap according to claim 1, characterized in that: The guide grooves (3) are symmetrically arranged along the longitudinal center line and are perpendicular to the T-shaped grooves (2).