Elastic metal hard sealing high-performance butterfly valve
By using an elastic metal ring and a sealing pressure ring structure, combined with a high-temperature spring, the problem of sealing leakage between the valve seat and the butterfly plate at high temperatures is solved, achieving high-performance sealing and low-resistance operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-28
- Publication Date
- 2026-03-31
AI Technical Summary
In ultra-high temperature environments, the seal between the valve seat and the butterfly plate is easily affected by high temperatures, leading to leakage. Furthermore, the fact that the rotation axis of the eccentric butterfly valve is not in the exact center of the valve plate increases the difficulty of sealing.
The structure employs an elastic metal ring and a sealing pressure ring, combined with a high-temperature spring and sealing components. The elasticity of the elastic metal ring increases the valve plate's sealing performance, while the sealing pressure ring further enhances the sealing performance. The tapered design reduces the resistance when the valve plate is closed, and the high-temperature spring ensures that the sealing pressure ring fits tightly against the valve plate, preventing gap leakage.
It effectively improves the sealing performance of the valve plate, prevents leakage, and reduces the resistance when the valve plate is closed, ensuring stable operation in high-temperature environments.
Smart Images
Figure CN224064851U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of butterfly valve technology, and in particular to a high-performance butterfly valve with a resilient metal hard seal. Background Technology
[0002] A butterfly valve, also known as a flap valve, is a simple regulating valve that can also be used for on / off control of low-pressure pipeline media. A butterfly valve is a valve whose closing element is a disc that rotates around its axis to open and close. It primarily functions as a shut-off and throttling device in pipelines. The butterfly valve's opening and closing element is a disc-shaped butterfly plate that rotates around its own axis within the valve body to achieve opening, closing, or regulation.
[0003] In ultra-high temperature application environments, the seal between the valve seat and the butterfly plate is easily affected by high temperature, resulting in leakage. At the same time, since the rotation axis of the eccentric butterfly valve is not in the exact center of the valve plate, the sealing difficulty is further increased. In view of this, we propose a high-performance butterfly valve with elastic metal hard seal. Utility Model Content
[0004] The purpose of this invention is to provide a high-performance butterfly valve with a flexible metal hard seal to solve the problem that the seal between the valve seat and the butterfly plate is easily affected by high temperature, causing leakage.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-performance butterfly valve with elastic metal hard seal, comprising a valve body, a valve seat, and a valve plate. The valve seat is sleeved inside the valve body, and the valve plate is disposed inside the valve seat. A valve shaft is fixedly connected to the front surface of the valve plate, and the valve shaft is rotatably connected to the inner wall of the valve seat. An arc-shaped groove is formed on the inner wall of the valve seat, and an elastic metal ring is fixedly connected to the inner wall of the arc-shaped groove. The elastic metal ring is tapered. A first mounting ring is fixedly connected to the inner wall of the valve seat. A through groove extending from the rear surface of the first mounting ring is formed on the front surface of the first mounting ring. A sealing pressure ring is disposed inside the valve seat, and a first sealing ring is sleeved on the outer surface of the sealing pressure ring. The outer surface of the first sealing ring contacts the inner wall of the valve seat, and a sealing component is disposed on the sealing pressure ring.
[0006] Preferably, the sealing assembly includes a connecting cylinder, which is sleeved on the inner wall of the sealing pressure ring, and a connecting rod is fixedly connected to the front surface of the sealing pressure ring.
[0007] Preferably, the front end of the connecting rod extends out of the front surface of the first mounting ring through a through groove, and the connecting rod is slidably connected to the through groove.
[0008] Preferably, a fixing ring is fixedly connected to the inner wall of the first mounting ring, and a support ring is fixedly connected to the inner wall of the fixing ring.
[0009] Preferably, the support ring is in contact with the outer surface of the connecting cylinder, and the front end of the connecting rod is fixedly connected to a second mounting ring.
[0010] Preferably, a second sealing ring is fitted onto the surface of the second mounting ring, the second sealing ring is in contact with the inner wall of the valve seat, and a high-temperature spring is fixedly connected between the fixing ring and the second mounting ring.
[0011] Preferably, an elastic metal sealing ring is fixedly connected to the inner wall of the valve seat, and the elastic metal sealing ring is configured as a semi-circle.
[0012] Preferably, a horizontal plate is fixedly connected to the inner wall of the sealing ring.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] 1. This high-performance butterfly valve with a resilient metal hard seal utilizes the elasticity of the resilient metal ring to increase the sealing performance of the valve plate when it is closed. At the same time, the sealing pressure ring further enhances the sealing performance of the valve plate and prevents leakage. In addition, the conical design of the resilient metal ring can effectively reduce the resistance when the valve plate is closed.
[0015] 2. This high-performance butterfly valve with elastic metal hard seal utilizes the elastic force of a high-temperature spring to ensure that the sealing ring remains tightly pressed against the valve plate when the valve plate is closed, preventing leakage caused by gaps between the valve seat and the valve plate. At the same time, the horizontal plate enables the valve plate to automatically push the sealing ring to move when it is opened, thus avoiding obstruction of the valve plate's movement. Attached Figure Description
[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments:
[0017] Figure 1 This is a schematic diagram of the structure of a high-performance butterfly valve with an elastic metal hard seal according to the present invention;
[0018] Figure 2 This is a schematic cross-sectional view of the valve body of this utility model;
[0019] Figure 3 This is a schematic diagram of the sealing assembly of this utility model;
[0020] Figure 4 This is an exploded view of the sealing component of this utility model.
[0021] Reference numerals: 1. Valve body; 2. Valve seat; 3. Valve plate; 4. Valve shaft; 5. Arc groove; 6. Elastic metal ring; 7. First mounting ring; 8. Through groove; 9. Sealing pressure ring; 10. First sealing ring; 11. Connecting cylinder; 12. Connecting rod; 13. Fixing ring; 14. Second mounting ring; 15. Second sealing ring; 16. High-temperature spring; 17. Support ring; 18. Elastic metal closing ring; 19. Horizontal plate. Detailed Implementation
[0022] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.
[0023] Please see Figure 1-4 This utility model provides a technical solution: a high-performance butterfly valve with elastic metal hard seal, comprising a valve body 1, a valve seat 2, and a valve plate 3. The valve seat 2 is sleeved inside the valve body 1, and the valve plate 3 is disposed inside the valve seat 2. A valve shaft 4 is fixedly connected to the front surface of the valve plate 3, and the valve shaft 4 is rotatably connected to the inner wall of the valve seat 2. An arc-shaped groove 5 is formed on the inner wall of the valve seat 2, and an elastic metal ring 6 is fixedly connected to the inner wall of the arc-shaped groove 5. The elastic metal ring 6 is tapered. A first mounting ring 7 is fixedly connected to the inner wall of the valve seat 2, and the front surface of the first mounting ring 7 is... The valve seat 2 has a through groove 8 extending from its rear surface. A sealing ring 9 is provided inside the valve seat 2. A first sealing ring 10 is fitted on the outer surface of the sealing ring 9. The outer surface of the first sealing ring 10 contacts the inner wall of the valve seat 2. A sealing component is provided on the sealing ring 9. The elastic metal ring 6 can increase the sealing performance of the valve plate 3 when the valve plate 3 is closed by utilizing its elasticity. At the same time, the sealing ring 9 can further improve the sealing performance of the valve plate 3 and prevent leakage. Meanwhile, the tapered design of the elastic metal ring 6 can effectively reduce the resistance when the valve plate 3 is closed.
[0024] Furthermore, the sealing assembly includes a connecting cylinder 11, which is sleeved on the inner wall of the sealing ring 9. A connecting rod 12 is fixedly connected to the front surface of the sealing ring 9. The front end of the connecting rod 12 extends out of the front surface of the first mounting ring 7 through a through groove 8. The connecting rod 12 is slidably connected to the through groove 8. A fixing ring 13 is fixedly connected to the inner wall of the first mounting ring 7. A support ring 17 is fixedly connected to the inner wall of the fixing ring 13. The support ring 17 contacts the outer surface of the connecting cylinder 11. A second mounting ring 14 is fixedly connected to the front end of the connecting rod 12. A second sealing ring 15 is sleeved on the surface of the second mounting ring 14. The second sealing ring 15 contacts the inner wall of the valve seat 2. A high-temperature spring 16 is fixedly connected between the fixed ring 13 and the second mounting ring 14. An elastic metal sealing ring 18 is fixedly connected to the inner wall of the valve seat 2. The elastic metal sealing ring 18 is set in a semi-circular shape. A horizontal plate 19 is fixedly connected to the inner wall of the sealing pressure ring 9. The elastic force of the high-temperature spring 16 ensures that the sealing pressure ring 9 is always in close contact with the valve plate 3 when the valve plate 3 is closed, thus avoiding gaps between the valve seat 2 and the valve plate 3 that could lead to leakage. At the same time, the horizontal plate 19 enables the valve plate 3 to automatically push the sealing pressure ring 9 when it is opened, thus avoiding obstructing the movement of the valve plate 3.
[0025] The first sealing ring 10 and the second sealing ring 15 are both composed of aluminum micro powder, alumina powder and other components, which can maintain a good sealing shape at high temperatures. Meanwhile, the high-temperature spring 16 is composed of metal elements such as nickel, chromium and molybdenum, which can work in high-temperature environments above 800°C and maintain good elasticity and stability. These are all existing technologies and will not be described in detail here.
[0026] Working principle: During normal sealing, the high-temperature spring 16 pulls the second mounting ring 14 and the second sealing ring 15 towards the first mounting ring 7. The second mounting ring 14, in conjunction with the connecting rod 12, drives the sealing pressure ring 9 to move. The sealing pressure ring 9 is tightly pressed against the valve plate 3, and simultaneously sealed by the first sealing ring 10. The second sealing ring 15 can seal the second mounting ring 14, preventing liquid from entering the cavity between the connecting cylinder 11 and the valve seat 2. Simultaneously, when the valve plate 3 is closed, it compresses the elastic metal ring 6, which, with the help of the elastic metal... The deformation of ring 6 further improves the sealing between valve plate 3 and valve seat 2. At the same time, the elastic metal ring 6 is tapered, which can effectively reduce the resistance when valve plate 3 is closed. The connecting rod 12, together with the first mounting ring 7, can restrict the movement trajectory of the connecting cylinder 11 to prevent rotation. When valve plate 3 is opened, it will squeeze the sealing ring 9. When the sealing ring 9 rotates, it will drive the connecting rod 12 to move and stretch the high temperature spring 16. The horizontal plate 19 can prevent the sealing ring 9 from resetting under the action of the high temperature spring 16 when valve plate 3 is opened.
[0027] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.
Claims
1. A resilient metal hard sealing high performance butterfly valve, comprising a valve body (1), a valve seat (2) and a valve plate (3), characterized in that: The valve seat (2) is sleeved in the valve body (1), the valve plate (3) is arranged in the valve seat (2), the front side surface of the valve plate (3) is fixedly connected with the valve shaft (4), the valve shaft (4) is rotatably connected with the inner wall of the valve seat (2), the inner wall of the valve seat (2) is provided with an arc-shaped groove (5), the inner wall of the arc-shaped groove (5) is fixedly connected with an elastic metal ring (6), the elastic metal ring (6) is arranged in a conical shape, the inner wall of the valve seat (2) is fixedly connected with a first mounting ring (7), the front side surface of the first mounting ring (7) is provided with a through groove (8) extending out of the rear side surface thereof, the inside of the valve seat (2) is provided with a sealing compression ring (9), the outer surface of the sealing compression ring (9) is sleeved with a first sealing ring (10), the outer surface of the first sealing ring (10) is in contact with the inner wall of the valve seat (2), and the sealing compression ring (9) is provided with a sealing assembly.
2. A resilient metal hard sealing high performance butterfly valve according to claim 1, characterized in that: The sealing assembly comprises a connecting barrel (11) sleeved in the inner wall of the sealing compression ring (9), and a connecting rod (12) fixedly connected to the front side surface of the sealing compression ring (9).
3. A resilient metal hard sealing high performance butterfly valve according to claim 2, characterized in that: The front end of the connecting rod (12) extends out of the front side surface of the first mounting ring (7) through the through groove (8), and the connecting rod (12) is in sliding connection with the through groove (8).
4. A resilient metal hard sealing high performance butterfly valve according to claim 3, characterized in that: The inner wall of the first mounting ring (7) is fixedly connected with a fixing ring (13), and the inner wall of the fixing ring (13) is fixedly connected with a supporting ring (17).
5. A resilient metal hard sealing high performance butterfly valve according to claim 4, characterized in that: The supporting ring (17) is in contact with the outer surface of the connecting barrel (11), and the front end of the connecting rod (12) is fixedly connected with a second mounting ring (14).
6. A resilient metal hard sealing high performance butterfly valve according to claim 5, characterized in that: The surface of the second mounting ring (14) is sleeved with a second sealing ring (15), the second sealing ring (15) is in contact with the inner wall of the valve seat (2), and the fixing ring (13) and the second mounting ring (14) are fixedly connected with a high-temperature spring (16).
7. A resilient metal hard sealing high performance butterfly valve as claimed in claim 1 wherein: The inner wall of the valve seat (2) is fixedly connected with an elastic metal sealing ring (18), and the elastic metal sealing ring (18) is arranged in a semicircular shape.
8. A resilient metal hard sealing high performance butterfly valve as claimed in claim 1 wherein: The inner wall of the sealing compression ring (9) is fixedly connected with a horizontal plate (19).