Elastic metal hard-sealed high-performance butterfly valve

Abstract

The present invention relates to the technical field of butterfly valves. Disclosed is an elastic metal hard-sealed high-performance butterfly valve. The elastic metal hard-sealed high-performance butterfly valve comprises a valve body, a valve seat, and a valve disc. The valve seat is sleeved in the valve body. The valve disc is arranged in the valve seat. A valve shaft is fixedly connected to a front side surface of the valve disc. The valve shaft is rotatably connected to an inner wall of the valve seat. The inner wall of the valve seat is provided with an arc-shaped groove. An elastic metal ring is fixedly connected to an inner wall of the arc-shaped groove. The elastic metal ring is configured in a conical shape. A first mounting ring is fixedly connected to the inner wall of the valve seat. A front side surface of the first mounting ring is provided with a slot extending out of a rear side surface of the first mounting ring. By means of the elastic metal ring, the elasticity of the elastic metal ring can be used to increase the sealing performance of the valve disc when the valve disc is closed. In addition, by means of a sealing press ring, the sealing performance of the valve disc can be further improved to avoid leakage. Furthermore, the conical shape of the elastic metal ring can effectively reduce the closing resistance of the valve disc.

Description

A high-performance butterfly valve with a flexible metal hard seal Technical Field

[0001] This invention relates to the field of butterfly valve technology, and particularly 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. Technical issues

[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. Technical solutions

[0005] To achieve the above objectives, the present invention provides the following technical solution: a high-performance butterfly valve with a resilient 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. Beneficial effects

[0013] 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.

[0014] 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

[0015] Figure 1 is a structural schematic diagram of an invention of a high-performance butterfly valve with elastic metal hard seal;

[0016] Figure 2 is a schematic cross-sectional view of the valve body of the present invention;

[0017] Figure 3 is a schematic diagram of the sealing assembly of the present invention;

[0018] Figure 4 is an exploded view of the sealing component of the present invention.

[0019] 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. The best embodiment of the present invention

[0020] Please refer to Figures 1-4. This invention provides a technical solution: a high-performance butterfly valve with a resilient 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, and a first mounting ring 7 is fixedly connected to the inner wall of the valve seat 2. The front surface of the first mounting ring 7... The valve seat 2 has a through groove 8 extending from its rear side 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 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.

[0021] 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.

[0022] 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.

[0023] 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.

[0024] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention 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 invention.

Claims

1. A high-performance butterfly valve with a resilient metal hard seal, comprising a valve body (1), a valve seat (2), and a valve plate (3), characterized in that: The valve seat (2) is fitted inside the valve body (1), the valve plate (3) is set inside the valve seat (2), the valve shaft (4) is fixedly connected to the front surface of the valve plate (3), the valve shaft (4) is rotatably connected to the inner wall of the valve seat (2), the inner wall of the valve seat (2) is provided with an arc groove (5), the inner wall of the arc groove (5) is fixedly connected with an elastic metal ring (6), the elastic metal ring (6) is set to be conical, the inner wall of the valve seat (2) is fixedly connected with a first mounting ring (7), the front surface of the first mounting ring (7) is provided with a through groove (8) extending out of its rear surface, the inside of the valve seat (2) is provided with a sealing pressure ring (9), the outer surface of the sealing pressure ring (9) is fitted 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 a sealing component is provided on the sealing pressure ring (9).

2. The high-performance butterfly valve with a resilient metal hard seal according to claim 1, characterized in that: The sealing assembly includes a connecting cylinder (11), which is sleeved on the inner wall of the sealing pressure ring (9), and a connecting rod (12) is fixedly connected to the front surface of the sealing pressure ring (9).

3. The high-performance butterfly valve with a resilient metal hard seal according to claim 2, characterized in that: The front end of the connecting rod (12) extends out of the front surface of the first mounting ring (7) through the through groove (8), and the connecting rod (12) is slidably connected to the through groove (8).

4. The high-performance butterfly valve with a resilient metal hard seal according to claim 3, characterized in that: The inner wall of the first mounting ring (7) is fixedly connected to a fixing ring (13), and the inner wall of the fixing ring (13) is fixedly connected to a support ring (17).

5. The high-performance butterfly valve with a resilient metal hard seal according to claim 4, characterized in that: The support ring (17) is in contact with the outer surface of the connecting cylinder (11), and the front end of the connecting rod (12) is fixedly connected to the second mounting ring (14).

6. The high-performance butterfly valve with a resilient metal hard seal according to claim 5, characterized in that: A second sealing ring (15) is fitted 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 fixing ring (13) and the second mounting ring (14).

7. The high-performance butterfly valve with a resilient metal hard seal according to claim 1, characterized in that: An elastic metal closure ring (18) is fixedly connected to the inner wall of the valve seat (2), and the elastic metal closure ring (18) is set in a semi-circular shape.

8. The high-performance butterfly valve with a resilient metal hard seal according to claim 1, characterized in that: A horizontal plate (19) is fixedly connected to the inner wall of the sealing ring (9).

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