U-shaped elastic hard sealing ball valve

Abstract

The utility model provides a U-shaped elastic hard sealing ball valve which comprises a ball valve body, an elastic sealing component assembly, a ball valve ball head and a valve body starting piece, the elastic sealing component assembly is installed in the ball valve body, the ball valve ball head is arranged on one side of the elastic sealing component assembly, the ball valve ball head is installed in the ball valve body in a rotating mode, and the valve body starting piece is connected with the elastic sealing component assembly. A valve body starting piece is fixedly installed on the ball valve body and fixedly connected with the ball valve ball head. The elastic sealing component assembly is mainly composed of three sealing structures, the three sealing structures are tightly and compactly designed together, in addition, the sealing piece gland is installed in a threaded mode, the spring piece and the sealing head are mainly pressed and fixed by the sealing piece gland, and therefore only the sealing piece gland needs to be detached, and the elastic sealing component assembly can be assembled and disassembled. The whole structure of the ball valve can be disassembled, the structural design is reasonable and compact, disassembly is easy, and the ball valve body can be of an integrated structure.

Description

Technical Field

[0001] This utility model belongs to the field of U-shaped ball valve technology, and particularly relates to a U-shaped elastic hard-seal ball valve. Background Technology

[0002] Unlike traditional ball valves, the U-type resilient hard-seal ball valve has a U-shaped ball head, rather than a round or elliptical one. It is a special type of ball valve made of rigid materials and featuring a U-shaped spherical structure. This valve offers high sealing performance, high strength and wear resistance, strong corrosion resistance, low fluid resistance, and ease of maintenance and replacement. In summary, the U-type resilient hard-seal ball valve is a high-performance valve suitable for various demanding, high-pressure, high-temperature, and highly corrosive operating conditions.

[0003] For example, a U-shaped sealing ring ball valve described in Chinese utility model patent document CN215831189U enhances the sealing performance of the ball valve by setting multiple sealing structures. Although the multiple sealing structures are arranged compactly, some structures are relatively dispersed. During the sealing operation, some slippage will occur between the structures to meet the requirements of elastic sealing. However, frequent slippage over a long period of time will cause serious wear, which will affect subsequent use and the sealing performance cannot be guaranteed for a long time. In addition, due to the unreasonable design of the overall structure, the valve seat is not a one-piece structure, which allows for the disassembly of the subsequent sealing structures. This results in a reduction in the overall strength of the valve seat, and the structural design needs to be improved.

[0004] Therefore, it is essential to invent a U-shaped resilient hard-seal ball valve. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a U-shaped resilient hard-seal ball valve, including a ball valve body, a resilient sealing assembly, a ball valve head, and a valve body actuating component. The resilient sealing assembly is installed inside the ball valve body, and a ball valve head is provided on one side of the resilient sealing assembly. The ball valve head is rotatably installed inside the ball valve body, and a valve body actuating component is fixedly installed on the ball valve body. The valve body actuating component is fixedly connected to the ball valve head.

[0006] The elastic sealing assembly includes a sealing gland, a disassembly groove, a limiting groove, a spring plate, a sealing head, and a mating groove. The sealing gland is threadedly installed inside the ball valve body. The two sides of the sealing gland are respectively provided with disassembly groove and limiting groove. A spring plate is movably sleeved in the limiting groove. The spring plate is locked in the mating groove of the sealing head. The sealing head is located on one side of the ball head of the ball valve.

[0007] Preferably, the sealing cap is a metal annular cap, and the disassembly grooves are symmetrically arranged on the outer surface of the sealing cap. The disassembly grooves are rectangular grooves, and the ball valve body and the sealing cap are provided with interlocking threads.

[0008] Preferably, the limiting groove is an annular recessed surface, the limiting groove allows the spring sheet to move, and the spring sheet is disposed within the limiting groove.

[0009] Preferably, the spring sheet has a V-shaped cross-section and is composed of a V-shaped part, a contact part, and a spring part. The V-shaped part and the contact part are integrally formed together, and at least four spring parts are provided on the inner side of the V-shaped part. The spring parts are arc-shaped lever structures made of spring steel.

[0010] Preferably, the V-shaped portion of the spring sheet is engaged with the mating groove of the sealing head, and the sealing head is composed of a blocking portion and a force-receiving portion, with the mating groove formed in the force-receiving portion of the sealing head.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] This utility model's elastic sealing assembly mainly consists of three sealing structures (sealing gland, spring plate, and sealing head), which are tightly and compactly designed together. When subjected to pressure, the pressure is transmitted to the sealing head, which cushions the pressure with its own material while simultaneously transmitting the pressure to the spring plate. The spring plate deforms under pressure to absorb the pressure. The structure has a small sliding part and low friction, which can achieve elastic sealing for a long time and efficiently. In addition, the sealing gland is threaded, and the spring plate and sealing head are mainly pressed and fixed by the sealing gland. Therefore, only the sealing gland needs to be removed to complete the disassembly of the entire structure. The structure is reasonably and compactly designed, and disassembly is simple, allowing the ball valve body to be a one-piece structure. Attached Figure Description

[0013] Figure 1 This is a partial cross-sectional structural diagram of the present invention.

[0014] Figure 2 This is a structural schematic diagram of the elastic sealing assembly of this utility model.

[0015] Figure 3 This is another structural schematic diagram of the elastic sealing assembly of this utility model.

[0016] In the picture:

[0017] 1. Ball valve body, 2. Elastic sealing assembly, 21. Sealing gland, 22. Disassembly groove, 23. Limiting groove, 24. Spring plate, 25. Sealing head, 26. Fitting groove, 3. Ball valve head, 4. Valve body actuating component. Detailed Implementation

[0018] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0019] In the description of the embodiments, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the present invention and for 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. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of the utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in the present utility model based on the specific circumstances.

[0020] As attached Figure 1 To be continued Figure 3 As shown:

[0021] The U-shaped resilient hard-seal ball valve provided by this utility model includes a ball valve body 1, a resilient sealing assembly 2, a ball valve head 3, and a valve body actuating component 4. The resilient sealing assembly 2 is installed inside the ball valve body 1, and the ball valve head 3 is provided on one side of the resilient sealing assembly 2. The ball valve head 3 is rotatably installed inside the ball valve body 1. The valve body actuating component 4 is fixedly installed on the ball valve body 1 and is fixedly connected to the ball valve head 3. The valve body actuating component 4 is a pneumatic drive component and is used to drive the ball valve head 3 to rotate. The surface of the ball valve head 3 is provided with a hardened layer to prevent the transported inoculation particles from damaging the surface of the ball valve head 3.

[0022] The elastic sealing assembly 2 includes a sealing cap 21, a disassembly groove 22, a limiting groove 23, a spring plate 24, a sealing head 25, and a mating groove 26. The sealing cap 21 is threadedly installed inside the ball valve body 1. The disassembly groove 22 and the limiting groove 23 are respectively opened on both sides of the sealing cap 21. The spring plate 24 is movably sleeved in the limiting groove 23. The spring plate 24 is locked in the mating groove 26 opened in the sealing head 25. The sealing head 25 is located on one side of the ball valve head 3. The elastic sealing assembly 2 is used to enhance the sealing performance of the ball valve head 3.

[0023] Example 1:

[0024] Specifically, the sealing cap 21 is a metal ring cap, and the disassembly groove 22 is symmetrically arranged on the outer side of the sealing cap 21. The disassembly groove 22 is a rectangular groove. The ball valve body 1 and the sealing cap 21 are provided with interlocking threads. The disassembly groove 22 allows the sealing cap 21 to be disassembled with a simple tool. The disassembly groove 22 is used to provide torque force for the tool.

[0025] Specifically, the limiting groove 23 is an annular concave surface. The limiting groove 23 allows the spring sheet 24 to move. The spring sheet 24 is disposed in the limiting groove 23. The limiting groove 23 is used to limit the deformation of the spring sheet 24 and prevent the spring sheet 24 from collapsing due to being unable to withstand the pressure.

[0026] Specifically, the spring plate 24 has a 'V' shaped cross-section and is composed of a V-shaped part, a contact foot part, and a spring part. The V-shaped part and the contact foot part are integrally set together. At least four spring parts are provided inside the V-shaped part. The spring parts are arc-shaped paddle structures made of spring steel. The spring plate 24 is used to buffer pressure and apply a reaction spring force to its sealing head 25.

[0027] Specifically, the V-shaped portion of the spring plate 24 is engaged with the mating groove 26 of the sealing head 25. The sealing head 25 is composed of a blocking portion and a force-bearing portion. The mating groove 26 is formed in the force-bearing portion of the sealing head 25. The sealing head 25 is made of sealing rubber. The blocking portion of the sealing head 25 is provided with an arc surface that matches the ball head 3 of the ball valve.

[0028] Example 2:

[0029] The defects or problems mentioned in the background technology are mainly solved by the structure of the elastic sealing assembly 2: When the ball valve needs to be closed, the valve body actuating component 4 drives the ball valve head 3, which rotates 90 degrees and contacts the sealing head 25 of the elastic sealing assembly 2. During this process, the sealing head 25 is subjected to the pressure of the ball valve head 3, and the sealing head 25 slides a short distance, compressing the spring plate 24 behind the sealing head 25. The spring plate 24 deforms under pressure, and the deformation of the spring plate 24 is limited by the limiting groove 23 of the sealing cover 21. The sealing cover 21 also limits the sliding distance of the front sealing head 25 to avoid loss of sealing due to excessive sliding distance. In addition, when it is necessary to replace the components of the elastic sealing assembly 2, it is only necessary to apply torque to the sealing cover 21 with a tool, which will rotate the sealing cover 21 and remove it.

[0030] Any technical solution that achieves the above-mentioned technical effects by utilizing the technical solution described in this utility model, or by designing a similar technical solution inspired by the technical solution described in this utility model, falls within the protection scope of this utility model.

Claims

1. A U-shaped resilient hard-seal ball valve, characterized in that, The device includes a ball valve body (1), an elastic sealing assembly (2), a ball valve head (3), and a valve body actuator (4). The ball valve body (1) is equipped with the elastic sealing assembly (2), and the ball valve head (3) is provided on one side of the elastic sealing assembly (2). The ball valve head (3) is rotatably installed in the ball valve body (1). The valve body actuator (4) is fixedly installed on the ball valve body (1), and the valve body actuator (4) is fixedly connected to the ball valve head (3). The elastic sealing assembly (2) includes a sealing cover (21), a disassembly groove (22), a limiting groove (23), a spring plate (24), a sealing head (25), and a mating groove (26). The sealing cover (21) is threadedly installed inside the ball valve body (1). The two sides of the sealing cover (21) are respectively provided with a disassembly groove (22) and a limiting groove (23). The spring plate (24) is movably sleeved in the limiting groove (23). The spring plate (24) is locked in the mating groove (26) opened in the sealing head (25). The sealing head (25) is located on one side of the ball head (3) of the ball valve.

2. The U-shaped resilient hard-seal ball valve as described in claim 1, characterized in that: The sealing cover (21) is a metal ring cover. The disassembly groove (22) is symmetrically arranged on the outer side of the sealing cover (21). The disassembly groove (22) is a rectangular groove. The ball valve body (1) and the sealing cover (21) are provided with interlocking threads.

3. The U-shaped resilient hard-seal ball valve as described in claim 1, characterized in that: The limiting groove (23) is an annular concave surface. The limiting groove (23) allows the spring sheet (24) to move. The spring sheet (24) is disposed in the limiting groove (23).

4. The U-shaped resilient hard-seal ball valve as described in claim 1, characterized in that: The spring plate (24) has a V-shaped cross-section. The spring plate (24) is composed of a V-shaped part, a contact foot part and a spring part. The V-shaped part and the contact foot part are integrally set together. At least four spring parts are provided on the inner side of the V-shaped part. The spring parts are arc-shaped paddle structures made of spring steel.

5. The U-shaped resilient hard-seal ball valve as described in claim 1, characterized in that: The V-shaped portion of the spring sheet (24) is engaged with the mating groove (26) of the sealing head (25). The sealing head (25) is composed of a blocking portion and a force-receiving portion, and the mating groove (26) is formed in the force-receiving portion of the sealing head (25).

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