Top-mounted energy storage sealing ring soft sealing fixed ball valve

Abstract

The utility model discloses a top-mounted energy storage sealing ring soft sealing fixed ball valve, and belongs to the technical field of ball valves. A valve seat is arranged in a valve body, a spring seat ring is arranged on the valve seat, and a cylindrical spring is arranged between the valve seat and the spring seat ring. The valve cover is arranged at the top of the valve body, the valve cover and the valve body are integrally formed, and a top flange is arranged at the top of the valve cover; the ball body is arranged between the valve body and the valve cover and is attached to the valve seat; the valve rod penetrates through the valve cover and the top flange and is connected to the ball body through the spring; a split ring and a baffle ring are arranged on the valve seat, and the split ring and the valve seat are limited through a groove; the valve body is of an integral type, the valve does not need to be disassembled, online maintenance and repair are achieved, the main sealing of the valve is achieved through the energy storage sealing ring, compared with an O-shaped ring, the valve is more resistant to aging and better in sealing performance, and the service life of the valve is prolonged.

Description

Technical Field

[0001] This utility model relates to a top-mounted energy storage sealing ring soft-seal fixed ball valve, belonging to the field of ball valve technology. Background Technology

[0002] Fixed ball valves are used to cut off or connect media in pipelines. Different materials are selected to suit various applications, including conveying water, steam, oil, nitric acid, acetic acid, oxidizing media, urea, etc. They are widely used in petroleum refining, long-distance pipelines, chemical, papermaking, pharmaceutical, water conservancy, power, municipal, and steel industries. Fixed ball valves have low torque, minimal seat deformation, stable sealing performance, and long service life. Both upper and lower shafts are equipped with PTFE bearings, reducing friction and simplifying operation. Fixed ball valves are generally full-bore: the valve orifice diameter matches the pipeline's inner diameter, allowing for direct pipeline cleaning with pigging tools. However, traditional top-entry soft-seal fixed ball valves have numerous parts, complex manufacturing processes, long production cycles, and more stringent precision requirements than conventional valves. Furthermore, assembling the ball often requires special tooling and is labor-intensive, affecting assembly efficiency and extending the production cycle. Moreover, they are inconvenient for online maintenance and repair, resulting in very high labor costs, significantly limiting their application scope. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a top-mounted energy storage sealing ring soft-seal fixed ball valve.

[0004] To achieve the above objectives / to solve the above technical problems, this utility model adopts the following technical solution:

[0005] A top-mounted, energy-storing, soft-seal, fixed ball valve with a storable sealing ring, comprising:

[0006] The valve body has a valve seat, a spring seat ring, and a cylindrical spring between the valve seat and the spring seat ring.

[0007] A valve cover, which is located on top of the valve body, and a top flange is provided on the top of the valve cover;

[0008] A sphere, wherein the sphere is disposed between the valve body and the valve cover and is in contact with the valve seat;

[0009] A valve stem, which passes through the valve cover and the top flange and is connected to the ball by a spring;

[0010] The valve seat is provided with a split ring and a retaining ring, and the split ring is limited to the valve seat by a groove.

[0011] Optionally, an oil seal O-ring is provided at the connection between the tail of the valve seat and the valve body.

[0012] Optionally, the valve body and the valve cover are sealed by an energy storage sealing ring and a sealing gasket.

[0013] Optionally, the valve body and the valve cover are connected by studs and nuts.

[0014] Optionally, the connection between the valve seat and the valve body is sealed by an energy storage sealing ring II and a sealing gasket II.

[0015] Optionally, an energy storage sealing ring and a sealing gasket are provided between the valve stem and the valve cover for a triple seal.

[0016] Optionally, a chain link and a retaining ring are provided between the valve seat and the valve body for limiting the position.

[0017] Optionally, the top flange is connected to the valve cover by screws and pins.

[0018] Optionally, a packing ring is provided at the connection between the valve stem and the valve cover.

[0019] Optionally, the top flange and the packing ring are triple-sealed by a sealing gasket.

[0020] Compared with the prior art, the beneficial effects achieved by this utility model are as follows:

[0021] The valve body of this utility model is provided with a valve seat, the valve seat is provided with a spring seat ring, and a cylindrical spring is provided between the valve seat and the spring seat ring. When installing the valve seat and the ball, since the spring is not under force, the valve seat can be easily pushed into place, which facilitates the insertion of the ball and reduces the cost of special tooling.

[0022] The valve body of this utility model is an integral piece, eliminating the need to disassemble the valve and enabling online maintenance and repair. Furthermore, the main seals of the valve are all sealed with energy storage sealing rings, which are more resistant to aging and have better sealing performance than O-rings, thus increasing the service life of the valve.

[0023] This utility model has a simplified external structure, requiring only fasteners on the upper side, which reduces the number of parts needed for assembly, simplifies assembly, reduces leakage points, improves sealing performance, and increases the production efficiency of finished products. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the fixed ball valve of this utility model;

[0025] Figure 2 This is a partially enlarged schematic diagram of the fixed ball valve of this utility model;

[0026] In the diagram: 1. Valve body; 2. Valve cover; 3. Ball; 4. Valve stem; 5. Valve seat; 6. Top flange; 7. Spring seat ring; 8. Packing ring; 9. Stud; 10. Nut; 11. Screw; 12. Pin; 13. Energy storage seal ring one; 14. Sealing gasket one; 15. Energy storage seal ring three; 16. Sealing gasket three; 17. Energy storage seal ring two; 18. Sealing gasket two; 19. Oil seal O-ring; 20. Chain link; 21. Retaining ring; 22. Retaining ring; 23. Split ring; 24. Cylindrical spring; 25. Spring. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0028] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0029] like Figures 1-2 As shown, a top-mounted storage sealing ring soft-seal fixed ball valve is disclosed, comprising:

[0030] Valve body 1, valve seat 5 is provided inside valve body 1, spring seat ring 7 is provided in valve seat 5, and cylindrical spring 24 is provided between valve seat 5 and spring seat ring 7;

[0031] Valve cover 2 is located on the top of valve body 1 and the two are integrally formed and connected by studs 9 and nuts 10; the top of valve cover 2 is provided with a top flange 6; valve cover 2 has an integral structure, which helps to reduce the shaking caused by the gap between the parts and the inaccurate position when the valve is opened and closed.

[0032] The ball 3 is disposed between the valve body 1 and the valve cover 2 and is in contact with the valve seat 5;

[0033] Valve stem 4 passes through valve cover 2 and top flange 6. Top flange 6 is connected to valve cover 2 by screws 11 and pins 12, and is connected to ball 3 by spring 25.

[0034] The valve seat 5 is provided with a split ring 23 and a retaining ring 22, and the split ring 23 is limited to the valve seat 5 by a groove.

[0035] In this embodiment, an oil seal O-ring 19 is provided at the connection between the tail of the valve seat 5 and the valve body 1 to prevent the sealing grease from flowing out from the tail of the valve seat. It also has a certain anti-fouling function, which can protect the main sealing ring from being scratched by impurities in the medium, thus preventing leakage.

[0036] In this embodiment, the valve body 1 and the valve cover 2 are sealed by an energy storage sealing ring 13 and a sealing gasket 14. Under the force of the medium in the channel direction, the medium enters the opening of the energy storage sealing ring, and the medium force opens the sealing ring, so that the outer wall of the sealing ring is in full contact with the valve body and the valve cover, thereby achieving the purpose of sealing.

[0037] In this embodiment, the connection between the valve seat 5 and the valve body 1 is sealed by a second energy storage sealing ring 17 and a second sealing gasket 18. The valve stem 4 and the valve cover 2 are sealed by a third energy storage sealing ring 15 and a third sealing gasket 16. The connection between the valve stem 4 and the valve cover 2 is provided with a packing ring 8. The top flange 6 and the packing ring 8 are sealed by a third sealing gasket 16. Under the force of the medium pushing upward towards the valve stem, the medium enters the opening of the energy storage sealing ring. The medium force opens the sealing ring, so that the outer wall of the sealing ring is in full contact with the valve stem and the valve cover, thus achieving the purpose of sealing.

[0038] During installation, the use of energy-storing seals can reduce the impact of pipe flange studs, nuts, and anti-loosening gaskets on the installation space. Using energy-storing seals at the main seal can reduce the aging of conventional O-rings over time, which can lead to decreased elasticity, reduced sealing performance, and shortened valve lifespan. When the medium enters the valve cavity, it enters the opening of the energy-storing seal, and the medium force opens the seal, ensuring full contact between the outer wall of the seal and the valve body and cover, achieving a seal. Within safe operating ranges, the higher the pressure, the better the sealing effect. The same applies to energy-storing seals installed on the valve cover and stem, and on the valve body and seat.

[0039] During assembly, first install the cylindrical spring 24 into the spring seat 7, then install the spring seat onto the valve seat 5, and then install the accumulator seal ring and sealing gasket onto the valve seat. Next, install the retaining ring and split ring in sequence. Then, install the valve seat and retaining ring into the valve body, and then place the ball into the valve body. Pull the valve seat towards the ball so that the sealing surface fits against the ball surface. Then, install the chain link, and then install the valve stem into the valve cover after the accumulator seal ring has been installed. Connect it to the valve body with bolts. Then, place the packing ring into the valve cover, place the sealing gasket, install the top flange, and connect it to the valve cover with bolts. Disassembly is performed in reverse order.

[0040] The valve body of this utility model is provided with a valve seat, the valve seat is provided with a spring seat ring, and a cylindrical spring is provided between the valve seat and the spring seat ring. When installing the valve seat and the ball, since the spring is not under force, the valve seat can be easily pushed into place, which facilitates the insertion of the ball and reduces the cost of special tooling.

[0041] The valve body of this utility model is an integral piece, eliminating the need to disassemble the valve and enabling online maintenance and repair. Furthermore, the main seals of the valve are all sealed with energy storage sealing rings, which are more resistant to aging and have better sealing performance than O-rings, thus increasing the service life of the valve.

[0042] This utility model has a simplified external structure, requiring only fasteners on the upper side, which reduces the number of parts needed for assembly, simplifies assembly, reduces leakage points, improves sealing performance, and increases the production efficiency of finished products.

[0043] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0044] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A top-mounted, energy-storing, soft-seal, fixed ball valve, characterized in that it comprises: A valve body (1) is provided inside the valve body (1), a valve seat (5) is provided inside the valve seat (5), a spring seat (7) is provided inside the valve seat (5), and a cylindrical spring (24) is provided between the valve seat (5) and the spring seat (7). Valve cover (2), the valve cover (2) is located on the top of the valve body (1), and the top of the valve cover (2) is provided with a top flange (6). The ball (3) is located between the valve body (1) and the valve cover (2) and is in contact with the valve seat (5); The valve stem (4) passes through the valve cover (2) and the top flange (6) and is connected to the ball (3) by a spring (25); The valve seat (5) is provided with a split ring (23) and a retaining ring (22), and the split ring (23) and the valve seat (5) are limited by a groove.

2. The top-mounted energy storage sealing ring soft-seal fixed ball valve according to claim 1, characterized in that, An oil seal O-ring (19) is provided at the connection between the tail of the valve seat (5) and the valve body (1).

3. The top-mounted energy storage sealing ring soft-seal fixed ball valve according to claim 1, characterized in that, The valve body (1) and the valve cover (2) are sealed by an energy storage sealing ring (13) and a sealing gasket (14).

4. The top-mounted energy storage sealing ring soft-seal fixed ball valve according to claim 1, characterized in that, The valve body (1) and the valve cover (2) are connected by studs (9) and nuts (10).

5. The top-mounted energy storage sealing ring soft-seal fixed ball valve according to claim 1, characterized in that, The connection between the valve seat (5) and the valve body (1) is sealed by the energy storage sealing ring II (17) and the sealing gasket II (18).

6. The top-mounted energy storage sealing ring soft-seal fixed ball valve according to claim 1, characterized in that, The valve stem (4) and the valve cover (2) are sealed by an energy storage sealing ring (15) and a sealing gasket (16).

7. The top-mounted energy storage sealing ring soft-seal fixed ball valve according to claim 1, characterized in that, A chain link (20) and a retaining ring (21) are provided between the valve seat (5) and the valve body (1) for limiting the position.

8. The top-mounted energy storage sealing ring soft-seal fixed ball valve according to claim 1, characterized in that, The top flange (6) is connected to the valve cover (2) by screws (11) and pins (12).

9. The top-mounted energy storage sealing ring soft-seal fixed ball valve according to claim 1, characterized in that, A packing ring (8) is provided at the connection between the valve stem (4) and the valve cover (2).

10. The top-mounted energy storage sealing ring soft-seal fixed ball valve according to claim 9, characterized in that, The top flange (6) and the packing ring (8) are sealed by a sealing gasket (16).

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