An easy-to-maintain valve seat

Abstract

This utility model relates to the field of valve seat technology and discloses a valve seat that is easy to maintain. The easy-to-maintain valve seat includes a valve seat body, with a bushing fixedly connected to the outer surface of the valve seat body, and a sealing mechanism at the end of the valve seat body. This easy-to-maintain valve seat, through the sealing mechanism, forms an adjustable compression system by cooperating with multiple sets of circumferentially arrayed fixed sleeves threadedly connected to the connecting seat. A compression spring continuously pulls the connecting rod and clamping plate to apply pressure to the sealing surface, ensuring that the sealing strip in the groove always maintains tight contact with the pipeline connection. The sealing ring further blocks the medium leakage path, achieving not only multiple dynamic sealing effects but also allowing for convenient adjustment of the sealing preload by rotating the fixed sleeve, significantly improving sealing reliability and reducing maintenance difficulty. Furthermore, in conjunction with the auxiliary mechanism, it protects the key components of the sealing mechanism and forms a complete sealing system.

Description

Technical Field

[0001] This utility model relates to the field of valve seat technology, specifically to a valve seat that is easy to maintain. Background Technology

[0002] A butterfly valve, also known as a flap valve, is a simple regulating valve that can be used to control the flow of various types of fluids such as air, water, and steam. When in use, the valve core is rotated by a rotating mechanism, and the opening and closing of the butterfly valve is controlled by the contact and separation between the valve core and the valve seat.

[0003] According to a publicly disclosed valve seat design for ease of maintenance (publication number: CN222277514U), the aforementioned application utilizes a design of sealing grooves, sealing rings, mounting grooves, and gaskets to effectively improve the connection sealing performance of pipeline flanges and pneumatic actuators. By designing an inflatable compression gasket between the opening / closing plate and the valve seat body, when the opening / closing plate is installed in the valve seat body, a fixed amount of gas can be injected into the inflatable compression ring, allowing it to expand and contact the opening / closing plate. This achieves compression sealing while effectively preventing excessive contact between the opening / closing plate and the valve seat, thus avoiding wear on the valve seat body and extending the service life of both the opening / closing plate and the valve seat body.

[0004] However, in actual use, the above-mentioned equipment can inject a certain amount of gas through the gas-filled extrusion pad, so that the pressure ring of the inflator abuts against the opening and closing plate, which can alleviate the wear on the valve seat body. However, the gas extrusion pad itself is a vulnerable part, even more prone to damage than the valve seat body. In actual working environment, it is difficult to play a long-term and stable sealing role. In view of this, we propose a valve seat that is easy to maintain. Summary of the Invention

[0005] The purpose of this invention is to provide a valve seat that is easy to maintain, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A valve seat that is easy to maintain includes a valve seat body, a bushing fixedly connected to the outer surface of the valve seat body, and a sealing mechanism provided at the end of the valve seat body, the sealing mechanism including:

[0007] A connecting seat, one end of which is fixedly connected to the side wall of the valve seat body, and the outer wall of the connecting seat is provided with an installation hole. The inner wall of the installation hole is threadedly connected with a threaded connection groove on the outer surface of the fixing sleeve. The end of the fixing sleeve away from the outer wall of the connecting seat is provided with an installation groove.

[0008] A compression spring is provided, one end of which is fixedly connected to the bottom surface of the mounting groove, and the other end of which is fixedly connected to a connecting rod. A clamping plate is fixedly connected to the end of the connecting rod away from the compression spring. A groove is provided at the end of the clamping plate near the connecting rod, and a sealing strip is installed on the inner wall of the groove. A sealing rubber ring is fixedly connected to the end of the fixing sleeve near the connecting rod.

[0009] Preferably, the dimensions of the connecting seat match the dimensions of the valve seat body, and the dimensions of the mounting hole match the dimensions of the fixing sleeve.

[0010] Preferably, the number of mounting holes is provided in multiple sets, and the multiple sets of mounting holes are distributed in a circumferential array on the outer surface of the valve seat body. The end of the groove is set to be arc-shaped, and the size of the sealing ring matches the size of the connecting rod.

[0011] Preferably, the valve seat body is provided with an auxiliary mechanism inside, the auxiliary mechanism including a sealing gasket, the side wall of the sealing gasket being fixedly connected to the end of the connecting seat away from the valve seat body, the end of the clamping plate near the compression spring abutting against the end of a gasket, the other end of the gasket abutting against the inner wall of the connecting seat, and a sealing sleeve being fixedly connected to the inner wall of the bushing.

[0012] Preferably, the end of the connecting seat away from the valve seat body is provided with a connecting groove, and the outer surface of the sealing gasket is provided with a groove that matches the connecting groove.

[0013] Preferably, the outer surface of the fixing sleeve is provided with anti-slip grooves.

[0014] Preferably, the end of the clamp plate near the outer wall of the connecting seat is set in an arc shape.

[0015] Compared with the prior art, this utility model provides a valve seat that is easy to maintain and has the following advantages:

[0016] 1. This easy-to-maintain valve seat, through the setting of a sealing mechanism, and the threaded connection of multiple sets of circumferential array fixed sleeves with the connecting seat, forms an adjustable compression system. The compression spring continuously pulls the connecting rod and the clamping plate to apply pressure to the sealing surface, so that the sealing strip in the groove always maintains tight contact with the pipeline connection; the sealing rubber ring further blocks the medium leakage path, which not only achieves multiple dynamic sealing effects, but also allows for convenient adjustment of the sealing preload by rotating the fixed sleeve, significantly improving sealing reliability and reducing maintenance difficulty.

[0017] 2. This easy-to-maintain valve seat, through the setting of auxiliary mechanisms, works with the groove of the sealing gasket and the connecting seat to strengthen the end face seal. The gasket disperses the pressure of the clamping plate to avoid local wear, and the sealing sleeve in the bushing provides an additional radial sealing layer. These components work together to protect the key components of the sealing mechanism and form a complete sealing system, effectively extending the service life of the valve and adapting to various working conditions. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0019] Figure 2 This is one of the schematic diagrams of the sealing mechanism of this utility model;

[0020] Figure 3 This is the second schematic diagram of the sealing mechanism of this utility model;

[0021] Figure 4 This is a schematic diagram of section A of the structure of this utility model.

[0022] In the diagram: 1. Valve seat body; 11. Bushing; 2. Sealing mechanism; 21. Connecting seat; 22. Fixed sleeve; 23. Threaded connection groove; 24. Compression spring; 25. Connecting rod; 26. Clamping plate; 27. Groove; 28. Sealing strip; 29. ​​Sealing ring; 3. Auxiliary mechanism; 31. Sealing gasket; 32. Gasket; 33. Sealing sleeve. Detailed Implementation

[0023] like Figures 1-4 As shown, this utility model provides a technical solution: a valve seat that is easy to maintain, including a valve seat body 1, a bushing 11 fixedly connected to the outer surface of the valve seat body 1, and a sealing mechanism 2 provided at the end of the valve seat body 1. The sealing mechanism 2 includes: a connecting seat 21, a fixing sleeve 22, a threaded connecting groove 23, a compression spring 24, a connecting rod 25, a clamping plate 26, a groove 27, a sealing strip 28, and a sealing rubber ring 29.

[0024] In one embodiment of this utility model, one end of the connecting seat 21 is fixedly connected to the side wall of the valve seat body 1, and the outer wall of the connecting seat 21 is provided with an installation hole. The inner wall of the installation hole is threadedly connected to a threaded groove 23 on the outer surface of the fixing sleeve 22. The end of the fixing sleeve 22 away from the outer wall of the connecting seat 21 is provided with an installation groove. One end of the compression spring 24 is fixedly connected to the bottom surface of the installation groove. The other end of the compression spring 24 is fixedly connected to a connecting rod 25. The end of the connecting rod 25 away from the compression spring 24 is fixedly connected to a clamping plate 26. The end of the clamping plate 26 near the connecting rod 25 is provided with a groove 27. A sealing strip 28 is installed on the inner wall of the groove 27. The end of the fixing sleeve 22 near the connecting rod 25 is fixedly connected to a sealing rubber ring 29. The size of the connecting seat 21 matches the size of the valve seat body 1, and the size of the installation hole matches the size of the fixing sleeve 22. Multiple sets of installation holes are provided, and the multiple sets of installation holes are distributed in a circumferential array on the outer wall of the valve seat body 1. On the surface, the end of the groove 27 is set to be arc-shaped, and the size of the sealing ring 29 matches the size of the connecting rod 25. By inserting the valve shaft into the bushing 11 of the valve seat body 1, the fixed sleeve 22 can be installed through the mounting hole. The threaded connection groove 23 on the outer surface of the fixed sleeve 22 can be threadedly connected to the mounting hole to achieve the fixing effect of the fixed sleeve 22. In use, the connecting groove at the end of the connecting seat 21 away from the valve seat body 1 can be bolted to the external pipeline. Furthermore, the size of the clamping plate 26 can support the sealing strip 28 to abut against the pipeline connection, thereby achieving a sealing effect. The setting of the compression spring 24 can make the connecting rod 25 always have a force against the outer wall of the connecting seat 21, so that the clamping plate 26 can drive the sealing strip 28 to seal the pipeline joint. By setting the end of the groove 27 to be arc-shaped, the friction on the sealing strip 28 can be reduced, thereby further improving the service life of the equipment.

[0025] In addition, an auxiliary mechanism 3 is provided inside the valve seat body 1. The auxiliary mechanism 3 includes a sealing gasket 31. The side wall of the sealing gasket 31 is fixedly connected to the end of the connecting seat 21 away from the valve seat body 1. The end of the clamping plate 26 near the compression spring 24 abuts against one end of the gasket 32. The other end of the gasket 32 ​​abuts against the inner wall of the connecting seat 21. A sealing sleeve 33 is fixedly connected to the inner wall of the bushing 11. A connecting groove is provided at the end of the connecting seat 21 away from the valve seat body 1. The outer surface of the sealing gasket 31 is provided with a groove that matches the connecting groove. The setting of the sealing gasket 31 can increase the sealing between the connecting seat 21 and the external pipeline, and play the first sealing role. At the same time, the gasket 32 ​​is set between the clamping plate 26 and the connecting seat 21, which can play a fixing role for the fixed sleeve 22 to prevent the fixed sleeve 22 from slipping, further ensuring the stability of the preconditions of the sealing mechanism 2. Furthermore, the sealing sleeve 33 can form a sealing effect between the valve shaft and the valve seat body 1.

[0026] In this embodiment of the utility model, the outer surface of the fixed sleeve 22 is provided with an anti-slip groove, and the end of the clamp 26 near the outer wall of the connecting seat 21 is set in an arc shape. The anti-slip groove can facilitate the quick disassembly and installation of the fixed sleeve 22 by the staff. Each set of fixed sleeves 22 is set to be independent and can be installed and disassembled without interference. When a fixed sleeve 22 needs to be inspected and replaced, it is only necessary to rotate the anti-slip groove housing to unlock the fixed sleeve 22. The sealing strip 28 can be replaced. There are two sets of sealing mechanisms 2. The two sets of sealing mechanisms 2 are distributed in a mirror symmetrical manner at both ends of the valve seat body 1.

[0027] In this invention, when the fixing sleeve 22 is screwed into the mounting hole of the connecting seat 21, the compression spring 24 pulls the clamping plate 26 and the sealing strip 28 in its groove 27 toward the inner wall of the connecting seat 21 via the connecting rod 25. The sealing strip 28 is used to seal the pipeline connection. At the same time, the sealing ring 29 at the end of the fixing sleeve 22 cooperates with the connecting rod 25, and the auxiliary mechanisms 3 inside the valve seat, such as the sealing gasket 31 and the sealing sleeve 33, work together to form a multiple seal to ensure the valve's sealing performance. During maintenance, the pressure can be released simply by unscrewing the fixing sleeve 22, making it convenient to replace worn parts such as the sealing strip 28.

[0028] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A valve seat that is easy to maintain, comprising a valve seat body (1), wherein a bushing (11) is fixedly connected to the outer surface of the valve seat body (1), characterized in that: The valve seat body (1) is provided with a sealing mechanism (2) at its end, the sealing mechanism (2) comprising: Connecting seat (21), one end of the connecting seat (21) is fixedly connected to the side wall of the valve seat body (1), and the outer wall of the connecting seat (21) is provided with an installation hole, the inner wall of the installation hole is threadedly connected with a threaded connection groove (23) on the outer surface of the fixing sleeve (22), and the end of the fixing sleeve (22) away from the outer wall of the connecting seat (21) is provided with an installation groove. A compression spring (24) is fixedly connected at one end to the bottom surface of the mounting groove. A connecting rod (25) is fixedly connected at the other end of the compression spring (24). A clamping plate (26) is fixedly connected at the end of the connecting rod (25) away from the compression spring (24). A groove (27) is provided at the end of the clamping plate (26) near the connecting rod (25). A sealing strip (28) is installed on the inner wall of the groove (27). A sealing rubber ring (29) is fixedly connected at the end of the fixing sleeve (22) near the connecting rod (25).

2. The valve seat for easy maintenance according to claim 1, characterized in that: The dimensions of the connecting seat (21) match the dimensions of the valve seat body (1), and the dimensions of the mounting hole match the dimensions of the fixing sleeve (22).

3. The valve seat for easy maintenance according to claim 1, characterized in that: The number of mounting holes is set in multiple sets, and the multiple sets of mounting holes are distributed in a circumferential array on the outer surface of the valve seat body (1). The end of the groove (27) is set in an arc shape, and the size of the sealing ring (29) matches the size of the connecting rod (25).

4. The valve seat for easy maintenance according to claim 1, characterized in that: An auxiliary mechanism (3) is provided inside the valve seat body (1). The auxiliary mechanism (3) includes a sealing gasket (31). The side wall of the sealing gasket (31) is fixedly connected to the end of the connecting seat (21) away from the valve seat body (1). The end of the clamp (26) close to the compression spring (24) abuts against one end of the gasket (32). The other end of the gasket (32) abuts against the inner wall of the connecting seat (21). A sealing sleeve (33) is fixedly connected to the inner wall of the bushing (11).

5. A valve seat for easy maintenance according to claim 4, characterized in that: The connecting seat (21) has a connecting groove at one end away from the valve seat body (1), and the outer surface of the sealing gasket (31) has a groove that matches the connecting groove.

6. The valve seat for easy maintenance according to claim 1, characterized in that: The outer surface of the fixed sleeve (22) is provided with anti-slip grooves.

7. The valve seat for easy maintenance according to claim 1, characterized in that: The end of the clamp (26) near the outer wall of the connecting seat (21) is set in an arc shape.

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