A valve seat sealing structure

Abstract

This application provides a valve seat sealing structure, relating to the field of valve technology. The valve seat sealing structure includes a valve, with two sets of sealing discs slidably connected to both sides of the valve. A sliding column is fixedly connected to one side of each sealing disc, and a sealing steel ring is inserted into the surface of the sealing disc. When the valve needs to be closed, rotating the turntable causes the threaded sleeve to rotate within the threaded collar, thereby causing the valve to descend. Upon reaching the bottom, rotating the turntable while keeping the threaded sleeve unchanged allows the threaded rod to drive the insert block downwards inside the valve, pressing against the sliding columns on both sides. This pushes the extended portion of the sealing disc, compressing the sealing steel ring. Simultaneously, the support spring deforms under pressure, generating elastic force that pushes the sealing steel ring against the surface of the sealing disc. This achieves the effect of strengthening the seal between the valve and the valve body, preventing incomplete valve closure and liquid or gas leakage, and improving the stability of the valve seat sealing structure.

Description

Technical Field

[0001] This application relates to the field of valve technology, and in particular to a valve seat sealing structure. Background Technology

[0002] The valve seat is a device used to support the valve core in the fully closed position. It is a detachable component inside the valve that supports the valve core in this position and forms a sealing pair. Generally, the valve seat diameter is the valve's maximum flow diameter. The valve seat sealing structure plays a crucial role in various valves (such as gate valves, ball valves, and globe valves). Its main function is to ensure that the valve effectively prevents leakage of the medium (such as liquid, gas, or steam) when closed. Different valve types and application scenarios require different sealing structures. The selection of the valve seat sealing structure is crucial to ensuring the reliability and safety of the valve under various operating conditions. A suitable sealing structure can effectively improve the stability and operating efficiency of the system.

[0003] Existing valve seat sealing structures do not easily improve the sealing between the valve and the valve body during valve use, resulting in valves not closing tightly and easily causing liquid or gas leakage. Utility Model Content

[0004] This application provides a valve seat sealing structure to solve the problem that it is not easy to increase the sealing between the valve and the valve body during valve use.

[0005] This application provides a valve seat sealing structure, including a valve. Two sets of sealing discs are slidably connected to both sides of the valve. A sliding column is fixedly connected to one side of the sealing disc. A sealing steel ring is inserted into the surface of the sealing disc. Several sets of support springs are fixedly connected to one side of the sealing steel ring. A valve body is fixedly connected to one end of the support spring. A connecting joint is fixedly connected to the top of the valve. A threaded sleeve is rotatably connected inside the connecting joint. A threaded rod is threadedly connected inside the threaded sleeve. An insert block is rotatably connected to the bottom of the threaded rod.

[0006] Preferably, two sets of positioning rods are fixedly connected to one side of the sealing disc, and tension springs are sleeved on the surface of the positioning rods.

[0007] Preferably, the valve has an internal groove that matches the insert block, and a sealing ring is fitted onto the surface of the sealing disc.

[0008] Preferably, a turntable is fitted onto the top of the threaded sleeve, and a wheel is fixedly connected to the top of the threaded rod.

[0009] Preferably, a connecting plate is fixedly connected to the top of the valve body, and rotating bolts are rotatably connected to both sides of the connecting plate, with threaded bolts sleeved on the surface of the rotating bolts.

[0010] Preferably, a fixing nut is threaded onto the surface of the threaded bolt, a valve cover is snapped onto the surface of the threaded bolt, and a threaded collar is fixedly connected to the top of the valve cover.

[0011] Preferably, the threaded sleeve has a thread inside that matches the threaded rod, and the threaded collar has a threaded hole inside that matches the threaded sleeve.

[0012] Beneficial effects:

[0013] Considering the difficulty in improving the sealing between the valve and the valve body during use, when the valve needs to be closed, rotating the turntable drives the threaded sleeve to rotate within the threaded collar, thereby driving the valve downwards. When it reaches the bottom, rotating the turntable while keeping the threaded sleeve unchanged allows the threaded rod to drive the insert block downwards inside the valve, squeezing the sliding columns on both sides, pushing the extended part of the sealing disc, and squeezing the sealing steel ring. At the same time, the support spring is compressed and deformed, generating elastic force that pushes the sealing steel ring to squeeze the surface of the sealing disc. This achieves the effect of strengthening the sealing between the valve and the valve body, preventing the valve from not closing tightly and causing liquid or gas leakage, and improving the stability of the valve seat sealing structure.

[0014] The above description is merely an overview of the technical solutions of the embodiments of this application. In order to better understand the technical means of the embodiments of this application and to implement them in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the embodiments of this application more obvious and understandable, specific implementation methods of this application are described below. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of a valve seat sealing structure according to the present invention.

[0017] Figure 2 This is a schematic diagram showing the disassembled structure of a valve seat sealing structure according to the present invention.

[0018] Figure 3 This is a schematic diagram of a valve, threaded sleeve, and threaded rod structure according to the present invention, which is a valve seat sealing structure.

[0019] Figure 4 This is a schematic diagram of the sealing disc and sealing steel ring structure of a valve seat sealing structure according to this utility model;

[0020] Figure 5This is a schematic diagram of the threaded bolt and fixing nut structure of a valve seat sealing structure according to this utility model.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Valve; 2. Sealing disc; 3. Sliding column; 4. Sealing steel ring; 5. Support spring; 6. Valve body; 7. Connecting joint; 8. Threaded sleeve; 9. Threaded rod; 10. Insert block; 11. Positioning rod; 12. Tension spring; 13. Sealing ring; 14. Turntable; 15. Rotary wheel; 16. Connecting plate; 17. Rotating bolt; 18. Threaded bolt; 19. Fixing nut; 20. Valve cover; 21. Threaded collar. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims and drawings of this application are intended to cover non-exclusive inclusion.

[0025] The term "embodiment" as used herein means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of the phrase "embodiment" in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0026] The directional terms appearing in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of this application. For example, in the description of this application, terms such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures. They are used only for the convenience of describing this application 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. Therefore, they should not be construed as limitations on this application.

[0027] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, "connection" or "joining" in mechanical structures can refer to a physical connection, such as a fixed connection, for example, a connection fixed by fasteners, such as a connection fixed by screws, bolts, or other fasteners; a physical connection can also be a detachable connection, such as a snap-fit ​​or interlocking connection; a physical connection can also be an integral connection, such as a connection formed by welding, bonding, or integral molding. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0028] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

[0029] This utility model provides, for example Figure 1-5 The valve seat sealing structure shown includes a valve 1. Two sets of sealing discs 2 are slidably connected to both sides of the valve 1. A sliding column 3 is fixedly connected to one side of the sealing disc 2. A sealing steel ring 4 is inserted into the surface of the sealing disc 2. Several sets of support springs 5 ​​are fixedly connected to one side of the sealing steel ring 4. A valve body 6 is fixedly connected to one end of the support spring 5. A connecting joint 7 is fixedly connected to the top of the valve 1. A threaded sleeve 8 is rotatably connected inside the connecting joint 7. A threaded rod 9 is threadedly connected inside the threaded sleeve 8. An insert block 10 is rotatably connected to the bottom of the threaded rod 9.

[0030] When valve 1 needs to be closed, rotating the turntable 14 causes the threaded sleeve 8 to rotate within the threaded collar 21, thereby causing valve 1 to descend. Upon reaching the bottom, rotating the wheel 15 keeps the threaded sleeve 8 unchanged, causing the threaded rod 9 to drive the insert block 10 downwards inside valve 1, pressing the sliding columns 3 on both sides, pushing the extended portion of the sealing disc 2, and compressing the sealing steel ring 4. Simultaneously, the support spring 5 deforms under pressure, generating elastic force that pushes the sealing steel ring 4 to press against the surface of the sealing disc 2. This strengthens the seal between valve 1 and valve body 6, preventing valve 1 from not closing properly and causing liquid or gas leakage, thus improving the stability of the valve seat sealing structure.

[0031] Two sets of positioning rods 11 are fixedly connected to one side of the sealing disc 2, and tension springs 12 are sleeved on the surface of the positioning rods 11.

[0032] When valve 1 needs to be opened, first rotate the threaded rod 9 upward so that the insert block 10 is pulled out from between the two sets of sliding columns 3. Then, the tension spring 12 returns to its original deformation and pulls the sealing disc 2 to retract into valve 1. The positioning rod 11 keeps the movement stable, which facilitates the rotation of the threaded sleeve 8 and pulls valve 1 to open.

[0033] The valve 1 has a sliding groove inside that matches the insert block 10, and the sealing disc 2 has a sealing ring 13 fitted on its surface.

[0034] The groove provided inside the valve 1 facilitates the sliding of the insert 10 inside, while also limiting the position of the insert 10; the sealing ring 13 on the sealing disc 2 enhances the sealing performance of the connection between the sealing disc 2 and the sealing steel ring 4.

[0035] Among them, the top of the threaded sleeve 8 is fitted with a turntable 14, and the top of the threaded rod 9 is fixedly connected with a rotating wheel 15.

[0036] The turntable 14 drives the threaded sleeve 8 to rotate, which facilitates the lifting and lowering of the valve 1; the turntable 15 drives the threaded rod 9 to rotate, which facilitates the sliding of the insert block 10 inside the valve 1.

[0037] Among them, the top of the valve body 6 is fixedly connected to the connecting plate 16, and the two sides of the connecting plate 16 are rotatably connected to the rotating bolts 17. The surface of the rotating bolts 17 is fitted with threaded bolts 18; the surface of the threaded bolts 18 is threadedly connected to the fixing nuts 19, and the surface of the threaded bolts 18 is snapped with the valve cover 20. The top of the valve cover 20 is fixedly connected to the threaded collar 21.

[0038] When disassembly and maintenance are required, rotate the fixing nuts 19 on both sides of the valve body 6 to disengage the fixing nuts 19 from the surface of the threaded bolt 18, thereby pulling the threaded bolt 18 to rotate to the side and disengage it from the grooves on both sides of the valve cover 20. This achieves the effect of quickly opening the valve cover 20, making it convenient for personnel to maintain the valve body 6 or valve 1 and saving time.

[0039] The threaded sleeve 8 has a thread inside that matches the threaded rod 9, and the threaded collar 21 has a threaded hole inside that matches the threaded sleeve 8.

[0040] The threaded rod 9 rotates on the thread inside the threaded sleeve 8, which facilitates the sliding of the insert block 10 inside the valve 1. The threaded sleeve 8 rotates in the threaded hole on the threaded collar 21, which facilitates the lifting and lowering of the valve 1.

[0041] Working principle: When this valve seat sealing structure is in use, if valve 1 needs to be closed, rotating the turntable 14 drives the threaded sleeve 8 to rotate inside the threaded collar 21, thereby driving valve 1 downward. When it reaches the bottom, rotating the wheel 15, while the threaded sleeve 8 remains unchanged, causes the threaded rod 9 to drive the insert block 10 downward inside valve 1, squeezing the sliding columns 3 on both sides, pushing the extended part of the sealing disc 2, and squeezing the sealing steel ring 4. At the same time, the support spring 5 is compressed and deformed to generate elastic force, pushing the sealing steel ring 4 to squeeze the surface of the sealing disc 2, thereby achieving the effect of strengthening the sealing between valve 1 and valve body 6, preventing valve 1 from not closing tightly and causing liquid or gas to seep in, and improving the stability of the valve seat sealing structure.

[0042] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A valve seat sealing structure comprising a valve (1), characterized in that: Two sets of sealing discs (2) are slidably connected to both sides of the valve (1). A sliding column (3) is fixedly connected to one side of the sealing disc (2). A sealing steel ring (4) is inserted into the surface of the sealing disc (2). Several sets of support springs (5) are fixedly connected to one side of the sealing steel ring (4). A valve body (6) is fixedly connected to one end of the support spring (5). A connecting joint (7) is fixedly connected to the top of the valve (1). A threaded sleeve (8) is rotatably connected inside the connecting joint (7). A threaded rod (9) is threadedly connected inside the threaded sleeve (8). A plug (10) is rotatably connected to the bottom of the threaded rod (9).

2. The valve seat sealing structure according to claim 1, characterized in that: Two sets of positioning rods (11) are fixedly connected to one side of the sealing disc (2), and tension springs (12) are sleeved on the surface of the positioning rods (11).

3. The valve seat sealing structure of claim 1, wherein: The valve (1) has a sliding groove inside that is compatible with the insert block (10), and the sealing disc (2) is fitted with a sealing ring (13).

4. The valve seat sealing structure of claim 1, wherein: The top of the threaded sleeve (8) is fitted with a turntable (14), and the top of the threaded rod (9) is fixedly connected with a wheel (15).

5. The valve seat sealing structure of claim 1, wherein: A connecting plate (16) is fixedly connected to the top of the valve body (6), and rotating bolts (17) are rotatably connected to both sides of the connecting plate (16). Threaded bolts (18) are sleeved on the surface of the rotating bolts (17).

6. A valve seat sealing structure according to claim 5, wherein: The threaded bolt (18) is threaded with a fixing nut (19), and a valve cover (20) is snapped onto the surface of the threaded bolt (18). A threaded collar (21) is fixedly connected to the top of the valve cover (20).

7. A valve seat sealing structure according to claim 6, wherein: The threaded sleeve (8) has a thread inside that matches the threaded rod (9), and the threaded collar (21) has a threaded hole inside that matches the threaded sleeve (8).

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