High pressure poppet valve and control valve therefor

Abstract

The utility model relates to a kind of high-pressure spherical valve core and control valve of its technical field of pipeline valve, including valve core body, the surface of valve core body is equipped with the limit boss that projects outward, limit boss is distributed setting along the locus of valve core body rotation, the threaded interface of valve body both ends is formed the structure of guide through flow hole, the inside of threaded interface is equipped with limit lining piece, limit lining piece is the cylindrical hollow structure, one end of limit lining piece extends to the inside of valve body and the both end surface of valve core body is in contact, the end of limit lining piece is equipped with the buckle groove matched with limit boss, valve core body is buckled with buckle groove by limit boss, sealing washer is equipped between valve core body and valve body inner wall, so that the sealing washer between valve core body and valve body inner wall can keep consistent pressure gap when valve body is closed, both ensure the airtightness of control valve, and effectively avoid the deformation of sealing washer under long-term high pressure of valve core.

Description

Technical Field

[0001] This utility model relates to the field of pipeline valve technology, and in particular to a high-pressure ball valve core and its control valve. Background Technology

[0002] Ball valves are mainly used in pipelines for shut-off, distribution, and changing the flow direction of media. They require only a 90-degree rotation and a small torque to achieve a tight seal. Ball valves are best suited for on / off and shut-off applications. In some high-pressure pipelines, due to the significant pressure difference between the two ends when the valve body is closed, the ball valve, located near the input end, can apply greater horizontal pressure to the output end. This causes deviations in the deformation and compression forces on the sealing gaskets at both ends of the ball valve. Over time, this can lead to misalignment and loosening between the ball valve and the valve body due to gasket deformation, impairing the valve's sealing performance.

[0003] Therefore, in view of these circumstances, there is an urgent need to develop a high-pressure ball valve core and its control valve to meet the needs of practical use. Utility Model Content

[0004] The purpose of this invention is to provide a high-pressure ball valve core and its control valve to solve the above-mentioned technical problems.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A high-pressure spherical valve core includes a valve core body, which is a spherical structure. A horizontally opened flow-guiding hole is provided at the center of the spherical structure. The surface of the valve core body is provided with outwardly protruding limiting protrusions, which are distributed along the rotation trajectory of the valve core body.

[0007] As a further embodiment of the above description, the limiting protrusion forms an annular protrusion structure along the rotation trajectory of the valve core body, and the limiting protrusion and the valve core body are integrally formed.

[0008] As a further embodiment of the above description, the limiting protrusions are disposed on the upper and lower end faces of the valve core body, and the limiting protrusions are distributed in a symmetrical structure along the plane where the guide hole is located.

[0009] A control valve includes a valve body, a valve stem, and the aforementioned valve core body. Both ends of the valve body have threaded interfaces. The valve core body is rotatably mounted inside the valve body via the valve stem. The threaded interfaces at both ends of the valve body form a conductive structure through guide holes. A limiting liner is provided inside the threaded interfaces. The limiting liner has a cylindrical hollow structure. One end of the limiting liner extends into the interior of the valve body and abuts against the two end surfaces of the valve core body. A groove matching a limiting protrusion is provided at the end of the limiting liner. The valve core body is engaged with the limiting protrusion through the groove. A sealing gasket is provided between the valve core body and the inner wall of the valve body.

[0010] In the above description, as a further solution, the end of the limiting liner near the valve core body is an arc-shaped inner wall that is inclined inward. The surfaces of both ends of the valve core body form a fitted structure with the arc-shaped inner wall. The retaining groove is an arc groove structure that is consistent with the rotation trajectory of the valve core body. The retaining groove is opened on the arc-shaped inner wall.

[0011] As a further solution described above, the end of the limiting liner furthest from the valve core body is a threaded part, and the limiting liner is fixed by threaded connection to the threaded interfaces at both ends of the valve body through the threaded part.

[0012] As a further embodiment of the above description, the valve body includes a left housing and a right housing, with threaded interfaces respectively opened at one end of the left housing and the right housing. The valve core body is disposed between the left housing and the right housing, and one end of the valve stem extends through the right housing to the top of the valve core body for fixed connection.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: by abutting the surface of the valve core body against the end of the limiting inner liner, and by engaging the valve core body with the limiting protrusion and the snap-fit ​​groove, the spherical valve core body is effectively limited between the two limiting inner liners, transferring the fluid pressure in the valve body to the limiting inner liner. This ensures that the sealing gasket between the valve core body and the inner wall of the valve body maintains a consistent pressure gap when the valve body is closed, thus guaranteeing the airtightness of the control valve and effectively preventing the sealing gasket from deforming under long-term high pressure of the valve core. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of a control valve described in this embodiment;

[0015] Figure 2 This is an exploded view of the structure of a high-pressure ball valve core and its control valve as described in this embodiment;

[0016] Figure 3 This is an exploded view of the structure of a high-pressure ball valve core and a limiting liner as described in this embodiment;

[0017] Figure 4This is a cross-sectional view of a control valve as described in this embodiment;

[0018] Figure 5 for Figure 4 A partially enlarged structural diagram of A in the middle.

[0019] In the diagram: 1-valve body, 11-left housing, 12-right housing, 13-threaded interface, 2-valve core body, 21-guide hole, 22-limiting protrusion, 3-limiting inner liner, 31-arc-shaped inner wall, 32-groove, 33-threaded part, 4-sealing gasket, 5-valve stem. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0021] For this embodiment, please refer to Figures 1-5 The specific implementation of the high-pressure spherical valve core includes a valve core body 2, which is a spherical structure. A horizontally opened guide hole 21 is provided at the center of the spherical structure. The surface of the valve core body 2 is provided with outwardly protruding limiting protrusions 22. The limiting protrusions 22 are distributed along the rotation trajectory of the valve core body 2, forming an annular protrusion structure along the rotation trajectory of the valve core body 2. The limiting protrusions 22 and the valve core body 2 are integrally formed. The limiting protrusions 22 are provided on the upper and lower end faces of the valve core body 2, and the limiting protrusions 22 are symmetrically distributed along the plane where the guide hole 21 is located.

[0022] A structure for applying a high-pressure ball valve core to a control valve, specifically as follows: Figure 2 and Figure 4 As shown: A control valve includes a valve body 1, a valve stem 5, and the aforementioned valve core body 2. Both ends of the valve body 1 are provided with threaded interfaces 13. The valve core body 2 is rotatably disposed inside the valve body 1 via the valve stem 5. The threaded interfaces 13 at both ends of the valve body 1 form a conductive structure through the guide holes 21. The valve body 1 includes a left housing 11 and a right housing 12. The threaded interfaces 13 are respectively provided at one end of the left housing 11 and the right housing 12. The valve core body 2 is disposed between the left housing 11 and the right housing 12. One end of the valve stem 5 passes through the right housing 12 and extends to the top of the valve core body 2 for fixed connection.

[0023] The threaded interface 13 is provided with a limiting inner liner 3. The limiting inner liner 3 is a cylindrical hollow structure. One end of the limiting inner liner 3 extends into the interior of the valve body 1 and abuts against the two end surfaces of the valve core body 2. The end of the limiting inner liner 3 is provided with a snap groove 32 that matches the limiting protrusion 22. The valve core body 2 is snapped into place by the limiting protrusion 22 and the snap groove 32. A sealing gasket 4 is provided between the valve core body 2 and the inner wall of the valve body 1.

[0024] Specifically, such as Figure 5 As shown, the end of the limiting inner liner 3 near the valve core body 2 is an arc-shaped inner wall 31 that is inclined inward. The surfaces of both ends of the valve core body 2 form a fitted structure with the arc-shaped inner wall 31. The retaining groove 32 is an arc groove structure that is consistent with the rotation trajectory of the valve core body 2. The retaining groove 32 is opened on the arc-shaped inner wall 31. The end of the limiting inner liner 3 away from the valve core body 2 is a threaded part 33. The limiting inner liner 3 is threadedly connected and fixed to the threaded interfaces 13 at both ends of the valve body 1 through the threaded part 33.

[0025] The valve core body 2 abuts against the end of the limiting inner liner 3, and the valve core body 2 is fastened to the groove 32 by the limiting protrusion 22. This effectively limits the spherical valve core body 2 between the two limiting inner liners 3, transferring the fluid pressure in the valve body 1 to the limiting inner liner 3. This ensures that the sealing gasket 4 between the valve core body 2 and the inner wall of the valve body 1 can maintain a consistent pressure gap when the valve body 1 is closed, thus ensuring the airtightness of the control valve and effectively preventing the sealing gasket 4 from deforming under long-term high pressure of the valve core.

[0026] The installation process of a high-pressure ball valve core and its control valve is as follows: The threaded interfaces 13 at the ends of the left housing 11 and the right housing 12 are threadedly fixed to the threaded portion 33 of the limiting inner liner 3. Two sealing gaskets 4 are fitted onto the two ends of the valve core body 2 near the guide hole 21. Finally, the left housing 11 and the right housing 12 are assembled and installed on both sides of the valve core body 2, so that the valve core body 2 is fastened to the retaining groove 32 of the limiting inner liner 3 through the limiting protrusion 22.

[0027] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the scope of protection of the present invention.

Claims

1. A high-pressure ball valve core, comprising a valve core body, characterized in that: The valve core body is a spherical structure with a horizontally opened flow-guiding hole at the center. The surface of the valve core body is provided with outwardly protruding limiting protrusions, which are distributed along the rotation trajectory of the valve core body.

2. The high-pressure ball valve core according to claim 1, characterized in that: The limiting protrusion forms an annular protrusion structure along the rotation trajectory of the valve core body, and the limiting protrusion and the valve core body are integrally formed.

3. A high-pressure ball valve core according to claim 2, characterized in that: The limiting protrusions are disposed on the upper and lower end faces of the valve core body, and the limiting protrusions are distributed in a symmetrical structure along the plane where the guide hole is located.

4. A control valve, characterized in that: The valve body comprises a valve body, a valve stem, and a valve core body as described in any one of claims 1-3. Both ends of the valve body are provided with threaded interfaces. The valve core body is rotatably disposed inside the valve body via the valve stem. The threaded interfaces at both ends of the valve body form a conductive structure through guide holes. A limiting inner liner is provided inside the threaded interfaces. The limiting inner liner has a cylindrical hollow structure. One end of the limiting inner liner extends into the interior of the valve body and abuts against the two end surfaces of the valve core body. A retaining groove matching a limiting protrusion is provided at the end of the limiting inner liner. The valve core body is engaged with the retaining protrusion through the retaining groove. A sealing gasket is provided between the valve core body and the inner wall of the valve body.

5. A control valve according to claim 4, characterized in that: The limiting inner liner is an arc-shaped inner wall that is inclined inward at one end near the valve core body. The surfaces at both ends of the valve core body form a fitted structure with the arc-shaped inner wall. The groove is an arc groove structure that is consistent with the rotation trajectory of the valve core body. The groove is opened on the arc-shaped inner wall.

6. A control valve according to claim 4, characterized in that: The end of the limiting liner away from the valve core body is a threaded part, and the limiting liner is fixed by threaded connection to the threaded interfaces at both ends of the valve body through the threaded part.

7. A control valve according to any one of claims 4-6, characterized in that: The valve body includes a left housing and a right housing. Threaded interfaces are respectively opened at one end of the left housing and the right housing. The valve core body is disposed between the left housing and the right housing. One end of the valve stem passes through the right housing and extends to the top of the valve core body for fixed connection.

Images