Sealing ring mounting structure for ball valve

Abstract

A sealing ring installation structure for a ball valve comprises a valve body and a valve ball installed in the valve body, a sealing ring matched with the valve ball to achieve sealing is arranged in the valve body, the sealing ring is installed in a sealing groove, and the sealing ring installation structure is characterized in that an annular limiting body is arranged on the edge of the sealing groove on the side of the valve ball in the direction towards the center of the valve body. According to the ball valve, the annular limiting body is additionally arranged to be matched with the annular spigot, the position of the sealing ring in the sealing groove is effectively limited, the stability of the sealing ring under the high pressure effect is enhanced, and therefore the sealing performance and reliability of the ball valve are remarkably improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of ball valve design, in particular to a sealing ring installation structure for a ball valve. Background Art

[0002] Ball valves are widely used in industrial and civilian fluid control systems due to their simple structure, easy operation, excellent sealing performance, and low fluid resistance. Ball valves control the flow of fluid by rotating the ball within the valve body. A core component of ball valves is the sealing ring, which forms a seal between the ball and the valve body to prevent fluid leakage. However, traditional ball valve designs have inherent problems during use, particularly when the valve is opened but not to its maximum opening (i.e., partially open).

[0003] In traditional ball valves, the sealing ring is typically installed directly in a sealing groove within the valve body, tightly fitting against the surface of the valve ball to achieve a seal. When the valve is partially open, fluid flows through the gap between the ball and the sealing ring. Due to fluid dynamics, the majority of the water pressure within the valve is concentrated on the sealing ring. This concentrated water pressure not only exacerbates friction and wear between the sealing ring, the ball, and the sealing groove, but more importantly, it can cause the sealing ring to deform or even fall out of the sealing groove, severely impacting the valve's sealing performance, leading to fluid leakage and reducing system reliability and safety.

[0004] Furthermore, seal ring deformation or loss can increase valve operating torque, making valve opening and closing difficult and further shortening the life of the ball valve. Especially in applications involving high pressure, high temperature, or corrosive media, seal ring material selection and structural design face even more severe challenges. Traditional seal ring installation methods are no longer able to meet the requirements for high performance and long life. Utility Model Content

[0005] In response to the problems existing in the prior art, the utility model provides a sealing ring installation structure for a ball valve, which can effectively resist water pressure, prevent the sealing ring from deforming or falling off, and ensure stable valve sealing performance.

[0006] The utility model is implemented as follows: a sealing ring installation structure for a ball valve includes a valve body, a valve ball installed in the valve body, a sealing ring is provided in the valve body for cooperating with the valve ball to achieve sealing, and the sealing ring is installed in a sealing groove, and is characterized in that an annular limit body is provided on the edge of the sealing groove on the valve ball side toward the center of the valve body.

[0007] Further preferably, the annular limiter has a height of 2-4.5 mm and a thickness of 2-3 mm.

[0008] Further preferably, an arc-shaped assembly guide surface is provided at the outer corner of the lower end of the annular limiting body on the valve ball side.

[0009] Further preferably, a first conical fitting surface is provided at the inner corner of the annular limiter.

[0010] Further preferably, an annular stop is provided on the sealing ring, and the annular limiting body cooperates with the annular stop to limit the sealing ring to be located in the sealing groove.

[0011] Further preferably, a second conical fitting surface is provided at the root of the annular stop of the sealing ring corresponding to the first conical fitting surface.

[0012] The advantages and technical effects of this utility model are as follows:

[0013] 1. Enhanced sealing reliability: By adding an annular limiter to the edge of the sealing groove on the valve ball side, the movement of the sealing ring under high pressure or fluid impact is effectively restricted, preventing it from escaping from the sealing groove, thereby significantly enhancing the stability of the sealing ring and the sealing reliability of the ball valve.

[0014] 2. Optimized structure and dimensions: The height and thickness of the annular stopper have been rationally designed to ensure sufficient strength to withstand water pressure while avoiding excessive weight that would affect the valve's operational flexibility. This optimization helps improve the overall performance and service life of the ball valve.

[0015] 3. Smooth installation and reduced wear: The arc-shaped assembly guide surface set at the outer corner of the lower end of the annular limiter reduces friction on the sealing ring during installation, making installation smoother. At the same time, this design also helps reduce wear on the sealing ring during long-term use, further extending its service life.

[0016] 4. Improve sealing performance and stability: The first conical mating surface at the inner corner of the annular limiter forms a tight fit with the annular stop and the second conical mating surface on the sealing ring, which not only improves the stability and sealing performance of the sealing ring, but also helps to press the sealing ring more tightly and evenly in the sealing groove when it is subjected to water pressure, thereby enhancing the sealing effect and reducing the risk of local wear and deformation.

[0017] In summary, the present invention significantly improves the sealing reliability, operational flexibility, installation convenience and service life of the ball valve through a series of structural optimizations and design innovations, providing a more reliable and efficient solution for the application of the ball valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of Example 1 of the present utility model;

[0019] Figure 2 yes Figure 1 Enlarged view of middle part I;

[0020] Figure 3 This is a half-section perspective view of the valve body;

[0021] Figure 4 yes Figure 3 Enlarged view of part ⅠⅠ;

[0022] Figure 5 It is a schematic diagram of the sealing ring structure of Example 2.

[0023] In the figure, 1, valve body; 1-1, sealing groove; 1-2, annular limiter; 1-3, arc-shaped assembly guide surface; 1-4, first conical fitting surface; 1-5, annular stop; 1-6, second conical fitting surface; 2, valve ball; 3, sealing ring; DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0025] See also Figures 1 to 4 A sealing ring installation structure for a ball valve includes a valve body 1, a valve ball 2 installed in the valve body, a sealing ring 3 provided in the valve body to cooperate with the valve ball to achieve a seal, and the sealing ring installed in a sealing groove 1-1. These basic components constitute the main structure of the ball valve. The valve body provides a fluid channel, the valve ball controls the flow of fluid by rotating, the sealing ring cooperates with the valve ball to achieve a seal, and the sealing groove provides an installation position for the sealing ring. This basic design ensures the basic function and sealing performance of the ball valve; an annular limiter 1-2 is provided on the edge of the sealing groove on the valve ball side toward the center of the valve body; as a newly added structural feature, the annular limiter mainly limits the movement of the sealing ring under high pressure or fluid impact, preventing it from escaping from the sealing groove, thereby enhancing the stability of the sealing ring and the sealing reliability of the ball valve.

[0026] Further preferably, the annular stopper has a height of 2-4.5 mm and a thickness of 2-3 mm. Reasonable height and thickness design ensures that the annular stopper is both strong enough to withstand water pressure and not too bulky to affect the operational flexibility of the valve. Furthermore, appropriate sizing also helps optimize the installation and removal of the sealing ring.

[0027] Further preferably, an arc-shaped assembly guide surface 1-3 is provided at the outer corner of the lower end of the annular stopper on the valve ball side. The arc-shaped assembly guide surface can reduce friction between the sealing ring and the annular stopper during installation, making installation smoother, and also helps reduce wear of the sealing ring during long-term use, thereby extending its service life.

[0028] Further preferably, a first tapered mating surface 1-4 is provided at the inner corner of the annular limiter. This first tapered mating surface forms a tight fit with the corresponding portion of the sealing ring, further improving the stability and sealing performance of the sealing ring. The tapered design helps to press the sealing ring more tightly into the sealing groove when subjected to water pressure, enhancing the sealing effect and preventing the sealing ring from being cut during use.

[0029] Example 2, please refer to Figure 5 The sealing ring is provided with annular stoppers 1-5, and the annular stopper cooperates with the annular stoppers to restrict the sealing ring to its position within the sealing groove. The cooperation between the annular stoppers and the annular stopper forms a reliable limiting and sealing mechanism, effectively preventing the sealing ring from moving or falling off under high pressure or fluid impact, thereby improving the sealing reliability and service life of the ball valve.

[0030] Further preferably, a second conical mating surface 1-6 is provided at the root of the annular stopper of the sealing ring corresponding to the first conical mating surface. The cooperation between the second conical mating surface and the first conical mating surface also helps to more evenly distribute the sealing ring in the sealing groove when it is subjected to water pressure, thereby reducing the risk of local wear and deformation.

[0031] The utility model effectively limits the position of the sealing ring in the sealing groove by adding the cooperation between the annular limiter and the annular stop, enhances the stability of the sealing ring under high pressure, and thus significantly improves the sealing performance and reliability of the ball valve.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A sealing ring installation structure for a ball valve, comprising a valve body, a valve ball installed in the valve body, a sealing ring provided in the valve body for cooperating with the valve ball to achieve sealing, the sealing ring being installed in a sealing groove, characterized in that: An annular limiting body is provided on the edge of the valve ball side sealing groove toward the center of the valve body.

2. The ball valve sealing ring installation structure according to claim 1, characterized in that: The annular limiting body has a height of 2-4.5 mm and a thickness of 2-3 mm.

3. The ball valve sealing ring installation structure according to claim 1, characterized in that: An arc-shaped assembly guide surface is provided at the outer corner of the lower end of the annular limiting body on the valve ball side.

4. The ball valve sealing ring installation structure according to claim 1, characterized in that: A first conical fitting surface is provided at the inner corner of the annular limiter.

5. The ball valve sealing ring installation structure according to claim 4, characterized in that: An annular stop is provided on the sealing ring, and the annular limiting body cooperates with the annular stop to limit the sealing ring to be located in the sealing groove.

6. The ball valve sealing ring installation structure according to claim 5, characterized in that: A second conical fitting surface is provided at the root of the annular stop of the sealing ring corresponding to the first conical fitting surface.

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