A valve structure for adjustable sealing pressure

Abstract

This utility model discloses a valve structure with adjustable sealing pressure, including a valve body, an elastic sealing body, and a sealing adjustment assembly. The valve body has a valve stem sealing seat at its top, through which the valve stem passes to control the valve core and achieve valve opening and closing. The elastic sealing body is fixed to the bottom of the inner cavity of the valve stem sealing seat and sleeved with the valve stem. The sealing adjustment assembly includes a first disc, a second disc, a spring, an adjusting bolt, and a compression seat. A guide rail is provided on the inner wall of the valve stem sealing seat. The first and second discs slide along the guide rail and are connected by the spring. The compression seat is fixed to the bottom of the second disc and compresses the elastic sealing body. The first disc has an adjusting screw hole that engages with the adjusting bolt. This invention allows for adjustment of the sealing pressure by rotating the adjusting bolt, adapting to different working conditions and compensating for wear on sealing components. The elastic sealing body is wear-resistant, and the valve stem sealing seat has a dust cover, making operation convenient and ensuring reliable sealing.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a valve structure with adjustable sealing pressure. Background Technology

[0002] Valves, as control components in fluid transport systems, perform functions such as shut-off, regulation, flow guidance, backflow prevention, pressure stabilization, flow diversion, and pressure relief. In many industrial applications, the sealing performance of valves is crucial, directly affecting the system's operational efficiency and safety. Traditional valve sealing structures often employ a fixed sealing pressure design, unable to adjust to changes in actual operating conditions. When system pressure fluctuates significantly or sealing components wear, valves with fixed sealing pressures are prone to leakage, affecting the normal operation of the entire system. Furthermore, for applications requiring frequent flow and pressure adjustments, valves with fixed sealing pressures cannot meet the demands for flexible control, reducing the system's adaptability and reliability. Therefore, developing a valve structure with adjustable sealing pressure is of significant practical importance. Utility Model Content

[0003] The purpose of this application is to provide a valve structure with adjustable sealing pressure to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this application provides the following technical solution: a valve structure with adjustable sealing pressure, including a valve body, a valve stem sealing seat communicating with the interior of the valve body is installed at the top of the valve body, and a valve stem is provided at the valve stem sealing seat to control the rotation of the valve core to realize the opening and closing of the valve body.

[0005] An elastic sealing body is fixed at the bottom end of the inner cavity of the valve stem sealing seat and is sleeved and connected to the valve stem.

[0006] A sealing adjustment assembly is used to compress the elastic sealing body to enhance the seal. The sealing adjustment assembly includes a first disc, a second disc, a spring, an adjusting bolt, and a compression seat. The inner wall of the valve stem sealing seat is provided with a guide rail arranged along its axial direction. The first disc and the second disc are both slidably connected to the guide rail and are connected by several springs. The compression seat is fixedly installed at the bottom end of the second disc, and the compression seat compresses the outer wall of the elastic sealing body. The top end of the first disc is provided with an adjusting screw hole, and an adjusting bolt is threadedly connected to the adjusting screw hole.

[0007] Preferably, the top of the valve stem sealing seat is bolted with a dust cover that seals its top.

[0008] Preferably, the adjusting bolt and the dust cover are rotatably connected.

[0009] Preferably, a handle for driving the adjustment bolt to rotate is fixedly installed at the top end of the bolt.

[0010] Preferably, the elastic seal is made of a wear-resistant composite rubber material.

[0011] Preferably, the elastic sealing body is a frustum shape with a smaller top and a larger bottom, and the compression seat is an inverted frustum shape with a larger top and a smaller bottom.

[0012] Preferably, both the first and second disks are stainless steel disks.

[0013] In summary, the technical effects and advantages of this utility model are as follows:

[0014] Adjustable sealing pressure: By rotating the adjusting bolt, the first disc can move along the guide rail, compressing or stretching the spring, which in turn drives the second disc and the compression seat to move, changing the degree of compression on the elastic seal body and realizing the adjustment of sealing pressure. It can adapt to different working conditions and pressure compensation after the wear of sealing components.

[0015] Excellent wear resistance: The elastic seal is made of wear-resistant composite rubber material, which extends the service life of the sealing components and reduces the risk of leakage due to wear.

[0016] Dustproof design: The dust cover at the top of the valve stem sealing seat prevents dust and other impurities from entering, ensuring the cleanliness of the valve interior and improving the reliability of the seal.

[0017] Easy to operate: The handle design at the top of the adjusting bolt allows operators to easily adjust the sealing pressure, improving work efficiency. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of a valve structure with adjustable sealing pressure according to an embodiment of this application;

[0020] Figure 2 This is a schematic diagram of the structure of an adjustable sealing pressure valve structure after the dust cover is removed, according to an embodiment of this application.

[0021] Figure 3 This is a partial cross-sectional view of a valve structure with adjustable sealing pressure according to an embodiment of this application.

[0022] In the diagram: 1. Valve body; 2. Valve stem sealing seat; 3. First disc; 4. Second disc; 5. Spring; 6. Adjusting screw hole; 7. Adjusting bolt; 8. Handle; 9. Valve stem; 10. Dust cover; 11. Elastic sealing body; 12. Pressing seat; 13. Guide rail. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] In the description of this disclosure, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this disclosure 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 disclosure. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] It should also be noted that all standard parts used in this application are commercially available, and can be custom-made according to the description and drawings. Unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances, and unless explicitly limited, machinery, parts, and equipment can all adopt conventional models in the prior art.

[0026] In this document, the term "comprising" is intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0027] Example: Reference Figure 1-3 The valve structure shown includes an adjustable sealing pressure valve body 1, an elastic sealing body 11, and a sealing adjustment assembly.

[0028] Valve body 1: A valve stem sealing seat 2 communicating with the inside of the valve body 1 is installed at the top of the valve body 1. A valve stem 9 is provided at the valve stem sealing seat 2 to control the rotation of the valve core and realize the opening and closing of the valve body 1.

[0029] Elastic sealing body 11: The elastic sealing body 11 is fixed at the bottom end of the inner cavity of the valve stem sealing seat 2 and is sleeved and connected to the valve stem 9. The elastic sealing body 11 is made of wear-resistant composite rubber material and is in the shape of a frustum with a smaller top and a larger bottom. This shape design is conducive to better cooperation with the valve stem 9 and the compression seat 12 to achieve a seal.

[0030] A sealing adjustment assembly is used to compress the elastic sealing body 11 to enhance the seal. The sealing adjustment assembly includes a first disc 3, a second disc 4, a spring 5, an adjusting bolt 7, and a compression seat 12. The inner wall of the valve stem sealing seat 2 is provided with a guide rail 13 arranged along its axis. Both the first disc 3 and the second disc 4 are slidably connected to the guide rail 13, and are connected by several springs 5. The compression seat 12 is fixedly installed at the bottom end of the second disc 4. The compression seat 12 is in the shape of an inverted frustum, wider at the top and narrower at the bottom, and compresses the outer wall of the elastic sealing body 11. An adjusting screw hole 6 is provided inside the top end of the first disc 3, and an adjusting bolt 7 is threaded into the adjusting screw hole 6. Both the first disc 3 and the second disc 4 are stainless steel discs, possessing good strength and corrosion resistance.

[0031] The top of the valve stem sealing seat 2 is bolted with a dust cover 10 to seal its top, preventing dust and other impurities from entering the valve stem sealing seat 2 and affecting the sealing performance. The adjusting bolt 7 and the dust cover 10 are rotatably connected, and the top of the adjusting bolt 7 is fixedly mounted with a handle 8 to drive its rotation. The adjusting bolt 7 can be easily rotated by rotating the handle 8.

[0032] Installation process: First, fix the elastic sealing body 11 to the bottom of the inner cavity of the valve stem sealing seat 2 and sleeve it with the valve stem 9. Then, connect the first disc 3 and the second disc 4 through the spring 5 and install them on the guide rail 13 of the valve stem sealing seat 2. Next, install the compression seat 12 at the bottom of the second disc 4 so that it contacts the elastic sealing body 11. Thread the adjusting bolt 7 to the adjusting screw hole 6 of the first disc 3 and rotatably connect it to the dust cover 10. Finally, install the dust cover 10 on the top of the valve stem sealing seat 2 with bolts.

[0033] Sealing pressure adjustment process: When it is necessary to adjust the sealing pressure, the operator turns the handle 8 at the top of the adjusting bolt 7. If the handle 8 is turned clockwise, the adjusting bolt 7 drives the first disc 3 to move downward along the guide rail 13, the spring 5 is compressed, and the second disc 4 and the compression seat 12 move downward accordingly, compressing the elastic sealing body 11 and increasing the sealing pressure; if the handle 8 is turned counterclockwise, the first disc 3 moves upward, the spring 5 is stretched, the compression force of the compression seat 12 on the elastic sealing body 11 decreases, and the sealing pressure decreases.

[0034] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A valve structure for regulating the pressure of a seal, characterized by: include: The valve body (1) has a valve stem sealing seat (2) that communicates with its interior at the top of the valve body (1). The valve stem sealing seat (2) is provided with a valve stem (9) that enters the valve body (1) to control the rotation of the valve core and realize the opening and closing of the valve body (1). An elastic sealing body (11) is fixed at the bottom of the inner cavity of the valve stem sealing seat (2) and is sleeved and connected to the valve stem (9); A sealing adjustment assembly is used to compress the elastic sealing body (11) to enhance the seal. The sealing adjustment assembly includes a first disc (3), a second disc (4), a spring (5), an adjusting bolt (7), and a compression seat (12). The inner wall of the valve stem sealing seat (2) is provided with a guide rail (13) arranged along its axial direction. The first disc (3) and the second disc (4) are slidably connected to the guide rail (13), and the first disc (3) and the second disc (4) are connected by several springs (5). The compression seat (12) is fixedly installed at the bottom end of the second disc (4). The compression seat (12) compresses the outer wall of the elastic sealing body (11). The top end of the first disc (3) is provided with an adjusting screw hole (6), and the adjusting screw hole (6) is threaded with an adjusting bolt (7).

2. The valve structure of claim 1, wherein: The top of the valve stem sealing seat (2) is bolted with a dust cover (10) that seals its top.

3. The valve structure of claim 1, wherein: The adjusting bolt (7) and the dust cover (10) are rotatably connected.

4. The valve structure of claim 1, wherein: The top of the adjusting bolt (7) is fixedly fitted with a handle (8) that drives its rotation.

5. The valve structure of claim 1, wherein: The elastic seal (11) is made of wear-resistant composite rubber material.

6. The valve structure of claim 1, wherein: The elastic sealing body (11) is a frustum shape with a smaller top and a larger bottom, and the compression seat (12) is an inverted frustum shape with a larger top and a smaller bottom.

7. The valve structure of claim 1, wherein: Both the first disk (3) and the second disk (4) are stainless steel disks.

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