Novel rubber valve seat stable in positioning

Abstract

The utility model provides a novel rubber valve seat of stable location relates to rubber valve seat field, including: valve body casing and rubber lining, the outer wall of valve body casing is equipped with the gas joint, and the inside of gas joint is equipped with the check valve, and the inner wall of valve body casing close to the port is equipped with the neck, and the inside of rubber lining is equipped with the check valve. The rubber lining is installed in the valve body shell, a wear-resisting assembly is embedded in the middle of the rubber lining, clamping rings are connected to the two ends of the rubber lining, an air cavity is formed in the inner wall of the rubber lining and communicates with the air connector, and a sealing film is arranged on the inner cavity wall of the air cavity. The novel rubber valve seat solves the problems that according to an existing novel rubber valve seat stable in positioning, due to aging, atrophy and deformation of rubber and abrasion caused by rotating friction between the rubber and the outer edge of a valve element, the sealing performance is affected, and the service life is shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of rubber valve seats, in particular to a novel rubber valve seat with stable positioning. Background Art

[0002] As is known to all, the removable surface parts in the valve are used to support the fully closed position of the valve core and form a sealing pair. Generally, the valve seat diameter is the maximum flow diameter of the valve. For example, the valve seat material of the butterfly valve is very wide, and all kinds of rubber, plastic, and metal materials can be used as valve seat materials. After searching, the prior art (publication number: CN219755366U) records "a new type of stable positioning rubber valve seat, which can make the valve plate and the valve seat evenly stressed and easy to install, thereby enhancing the practicality of the new type of stable positioning rubber valve seat; including a valve body, a rubber valve assembly is arranged in the middle of the valve body, the rubber valve assembly includes a first valve plate and a second valve plate, the first valve plate is connected to the outer wall of the rubber valve seat, the top of the rubber valve seat is provided with a through groove, and the rotating rod of the valve body is arranged in the through groove, the first valve plate is clamped with the second valve plate through a clamping assembly, the rubber valve seat and the second valve plate are slidingly fitted, the top of the second valve plate is provided with a second through hole, the second through hole and the rotating rod are slidingly fitted, and the rear end and front end of the valve body are provided with mounting grooves. "

[0003] Although the new type of stable positioning rubber valve seat in the prior art has achieved positioning installation and enhanced sealing, there are still some shortcomings: when the existing new type of stable positioning rubber valve seat is in use, the rubber valve seat will age, shrink and deform after long-term use, and there will be a gap in the connection with the metal parts on the outside, which affects the sealing effect, and the overall replacement is relatively troublesome; secondly, the main structure of the rubber valve seat is a rubber lining placed on the inside of the valve body. There is a long-term sliding friction between the rubber lining and the outer edge of the valve core (rotatable shaft plate), which will cause wear of the rubber material and thus affect the service life. Utility Model Content

[0004] In order to overcome the defects of the prior art, a new type of stable positioning rubber valve seat is provided to solve the problems of the existing new type of stable positioning rubber valve seat, which has the problem of affecting the sealing performance and reducing the service life due to the aging, shrinkage and deformation of the rubber and the wear caused by the rotational friction between the rubber and the outer edge of the valve core.

[0005] To achieve the above-mentioned purpose, a new type of rubber valve seat with stable positioning is provided, comprising: a valve body shell and a rubber lining, the outer wall of the valve body shell is provided with an air joint, and a one-way valve is provided inside the air joint, and a groove is provided on the inner wall of the valve body shell near the port, the rubber lining is installed inside the valve body shell, and a wear-resistant component is embedded in the middle of the rubber lining, and clamping rings are connected to the two ends of the rubber lining, an air cavity is provided on the inner wall of the rubber lining, and the air cavity is connected to the air joint, and a sealing film is provided on the inner wall of the air cavity.

[0006] Furthermore, a shaft sleeve is connected to the top of the valve body shell, and an outer shaft hole is opened on the upper shell wall of the valve body shell, and the shaft sleeve is connected to the outside of the outer shaft hole.

[0007] Furthermore, connecting blocks are provided on both sides of the valve body shell, and a fixing seat is connected to the lower end of the valve body shell.

[0008] Furthermore, a threaded hole is provided near the edge of the clamping ring, a flow hole is provided inside the clamping ring, and the clamping ring is clamped in the clamping groove, and the threaded hole and the connecting hole provided outside the clamping groove are axially overlapped.

[0009] Furthermore, an inner shaft hole is opened in the middle of the rubber lining, and an axle seat hole is opened on the inner wall of the rubber lining on the side opposite to the inner shaft hole, and the inner shaft hole and the axle seat hole are located on the same straight line with the center of the outer shaft hole.

[0010] Furthermore, the rubber liner is configured as a cylindrical structure, and the air cavity is configured as a closed chamber structure in the cylinder wall of the cylinder, and the outer diameter of the cylinder is smaller than the outer diameter of the clamping ring.

[0011] Furthermore, the wear-resistant component includes an inner steel ring, and a wear-resistant layer is provided on the outer side of the steel ring, and through holes arranged in a ring matrix are opened inside the steel ring.

[0012] Furthermore, the wear-resistant layer is configured as a composite material of graphene and ceramics, and the wear-resistant layer is located at the center of the rubber lining, and the shaft seat hole is opened in the annular ring layer of the wear-resistant layer.

[0013] The beneficial effects of the utility model are:

[0014] 1. By using the provided clamping ring and the clamping groove, the clamping ring is clamped in the clamping groove, and at the same time, it is fixed by bolts through the connecting hole and the threaded hole, so that the positioning and stable connection between the rubber lining and the valve body shell can be achieved, and then the valve plate and the shaft rod are installed, so that the bottom of the shaft rod is connected to the shaft seat hole, and the shaft rod passes through the inner shaft hole, the outer shaft hole and the shaft sleeve to complete the installation. When in use, by arranging a wear-resistant component on the rubber lining, the steel ring and the wear-resistant layer included in the wear-resistant component reduce the wear between the valve plate and the rubber lining, thereby extending the service life of the rubber lining;

[0015] 2. By utilizing the air cavity opened in the rubber lining, and the air joint and the one-way valve connected to the outside of the air cavity, when the rubber lining ages, shrinks and deforms due to long-term use, the air joint is connected to the inflation device on the outside to allow gas to be rushed into the air cavity, thereby forming internal air pressure in the air cavity, causing the rubber lining to expand outward, thereby compensating for the gap caused by deformation and shrinkage and the components on the outside, as well as the contact effect between the cavity wear-resistant component and the valve plate, thereby achieving the effect of ensuring sealing without replacement and extending the overall service life of the rubber valve seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model.

[0017] Figure 2 This is a schematic diagram of the cross-sectional structure of the valve body shell of an embodiment of the utility model.

[0018] Figure 3 This is a schematic diagram of the cross-sectional structure of the rubber liner according to an embodiment of the utility model.

[0019] Figure 4 This is a schematic diagram of the cross-sectional structure of the wear-resistant component of an embodiment of the utility model.

[0020] In the figure: 1. valve body shell; 11. air joint; 12. shaft sleeve; 13. connecting block; 14. outer shaft hole; 15. slot; 16. connecting hole; 2. rubber lining; 21. wear-resistant component; 211. steel ring; 212. through hole; 213. wear-resistant layer; 22. retaining ring; 221. threaded hole; 222. flow hole; 23. inner shaft hole; 24. one-way valve; 25. air cavity; 26. sealing membrane; 27. shaft seat hole. DETAILED DESCRIPTION

[0021] Reference Figures 1 to 4 As shown, the utility model provides a new type of rubber valve seat with stable positioning, including: a valve body shell 1 and a rubber lining 2, the outer wall of the valve body shell 1 is provided with a gas joint 11, and a one-way valve 24 is provided inside the gas joint 11, and a card slot 15 is provided on the inner wall of the valve body shell 1 near the port, the top of the valve body shell 1 is connected with a shaft sleeve 12, and the upper shell wall of the valve body shell 1 is provided with an outer shaft hole 14, and the shaft sleeve 12 is connected to the outer side of the outer shaft hole 14, connecting blocks 13 are provided on both sides of the valve body shell 1, and a fixed seat is connected to the lower end of the valve body shell 1, the rubber lining 2 is installed inside the valve body shell 1, and a wear-resistant component 21 is embedded in the middle of the rubber lining 2, and clamping rings 22 are connected to the two ends of the rubber lining 2, an air cavity 25 is provided on the inner wall of the rubber lining 2, and the air cavity 25 is communicated with the gas joint 11, and a sealing film 26 is provided on the inner wall of the air cavity 25.

[0022] In this embodiment, the valve body shell 1 and the rubber lining 2 constitute the main structure of the new type of rubber valve seat with stable positioning involved in this application.

[0023] Specifically, the rubber lining 2 is made of chloroprene rubber, and the clamping rings 22 on both sides are made of polyurethane, while the sealing film 26 is made of polyvinyl chloride, so that the cavity 25 has a sealing effect, and has weather resistance, wear resistance and elasticity, which facilitates the expansion of the cavity 25.

[0024] Through the above technical solution, the rubber lining 2 as a whole has a certain elastic expansion and contraction effect during installation, thereby facilitating installation.

[0025] Specifically, the gas joint 11 and the rubber liner 2 are set as an integral structure, and when installed, the gas joint 11 protrudes from the installation hole opened on the outer wall of the valve body shell 1, and sealant is applied around the installation hole.

[0026] like Figure 2 and Figure 3 As shown, a threaded hole 221 is opened near the edge of the snap ring 22, and a flow hole 222 is opened inside the snap ring 22, and the snap ring 22 is clamped in the slot 15, and the threaded hole 221 and the connecting hole 16 opened on the outside of the slot 15 are axially overlapped, an inner shaft hole 23 is opened in the middle of the rubber lining 2, and an axle seat hole 27 is opened on the inner wall of the rubber lining 2 on the side opposite to the inner shaft hole 23, and the inner shaft hole 23 and the axle seat hole 27 are located on the same straight line with the center of the outer shaft hole 14.

[0027] Specifically, the flow hole 222 has the same inner diameter as the rubber liner 2 , and the clamping ring 22 and the rubber liner 2 are configured as an integral structure.

[0028] As a preferred embodiment, the inner shaft hole 23 and the shaft seat hole 27 are provided to facilitate the installation of the valve stem (shaft rod).

[0029] like Figure 3 and Figure 4 As shown, the rubber lining 2 is configured as a cylindrical structure, and the air cavity 25 is configured as a closed chamber structure in the cylinder wall of the cylinder, and the outer diameter of the cylinder is smaller than the outer diameter of the retaining ring 22, the wear-resistant component 21 includes an inner steel ring 211, and a wear-resistant layer 213 is provided on the outer side of the steel ring 211, and through holes 212 arranged in a ring matrix are provided inside the steel ring 211, the wear-resistant layer 213 is configured as a composite material of graphene and ceramics, and the wear-resistant layer 213 is located at the center of the rubber lining 2, and the shaft seat hole 27 is provided in the annular ring layer of the wear-resistant layer 213.

[0030] Specifically, the circle width of the wear-resistant component 21 can be appropriately set so that the position where the wear begins with the rubber lining 2 when the valve plate is rotated is the edge of the wear-resistant component 21, thereby completely avoiding friction between the valve plate and the rubber layer of the rubber lining 2.

[0031] As a preferred embodiment, by providing the wear-resistant layer 213 composed of graphene and ceramic composite materials, the mechanical strength of the wear-resistant layer 213 is increased, and the wear-resistant layer 213 has a certain toughness, and has properties such as wear resistance and corrosion resistance.

[0032] When in use, the provided clamping ring and clamping groove are used to clamp the clamping ring in the clamping groove, and at the same time, it is fixed by bolts through the connecting hole and the threaded hole to achieve a stable positioning connection between the rubber lining and the valve body shell, and then the valve plate and the shaft rod are installed so that the bottom of the shaft rod is connected to the shaft seat hole, and the shaft rod passes through the inner shaft hole, the outer shaft hole and the shaft sleeve to complete the installation. When in use, a wear-resistant component is provided in the rubber lining, so that the wear between the valve plate and the rubber lining is reduced through the steel ring and the wear-resistant layer included in the wear-resistant component, thereby extending the rubber lining. The service life of the lining is extended; by utilizing the air cavity opened in the rubber lining, and the air joint and the one-way valve connected to the outside of the air cavity, when the rubber lining ages, shrinks and deforms due to long-term use, the air joint is connected to the inflation device on the outside to allow gas to be rushed into the air cavity, thereby forming internal air pressure in the air cavity, causing the rubber lining to expand outward, thereby compensating for the gap caused by the deformation and shrinkage and the components on the outside, as well as the contact effect between the cavity wear-resistant component and the valve plate, thereby achieving the effect of ensuring sealing without replacement and extending the overall service life of the rubber valve seat.

[0033] The new type of rubber valve seat with stable positioning of the utility model can effectively solve the problems of existing new type of rubber valve seat with stable positioning, such as the aging, shrinkage and deformation of the rubber, and the wear caused by the rotational friction between the valve core and the outer edge, which affects the sealing performance and reduces the service life. It is realized on the basis of the existing new type of rubber valve seat with stable positioning technology, so that when the rubber lining inside the rubber valve seat ages and shrinks, it can extend its service life without replacement, and at the same time enhances the wear resistance of the rubber lining, thereby ensuring its sealing performance and reducing wear and consumption.

Claims

1. A new type of rubber valve seat with stable positioning, comprising: A valve body shell (1) and a rubber lining (2), characterized in that: an air joint (11) is provided on the outer wall of the valve body shell (1), a one-way valve (24) is provided inside the air joint (11), and a retaining groove (15) is provided on the inner wall of the valve body shell (1) near the port, the rubber lining (2) is installed inside the valve body shell (1), a wear-resistant component (21) is embedded in the middle of the rubber lining (2), and retaining rings (22) are connected to both ends of the rubber lining (2), an air cavity (25) is provided on the inner wall of the rubber lining (2), and the air cavity (25) is communicated with the air joint (11), and a sealing film (26) is provided on the inner wall of the air cavity (25).

2. A new type of rubber valve seat with stable positioning according to claim 1, characterized in that: The top of the valve body shell (1) is connected to a shaft sleeve (12), and the upper shell wall of the valve body shell (1) is provided with an outer shaft hole (14), and the shaft sleeve (12) is connected to the outside of the outer shaft hole (14).

3. A new type of rubber valve seat with stable positioning according to claim 1, characterized in that: Connecting blocks (13) are provided on both sides of the valve body shell (1), and a fixing seat is connected to the lower end of the valve body shell (1).

4. A new type of rubber valve seat with stable positioning according to claim 1, characterized in that: The clamping ring (22) is provided with a threaded hole (221) near the edge, and a flow hole (222) is provided inside the clamping ring (22). The clamping ring (22) is clamped in the clamping groove (15), and the threaded hole (221) and the connecting hole (16) provided outside the clamping groove (15) are axially overlapped.

5. A new type of rubber valve seat with stable positioning according to claim 1, characterized in that: An inner shaft hole (23) is provided in the middle of the rubber lining (2), and an axle seat hole (27) is provided on the inner wall of the rubber lining (2) on the side opposite to the inner shaft hole (23), and the inner shaft hole (23) and the axle seat hole (27) are located on the same straight line as the center of the outer shaft hole (14).

6. A new type of rubber valve seat with stable positioning according to claim 1, characterized in that: The rubber lining (2) is configured as a cylindrical structure, and the air cavity (25) is configured as a closed chamber structure in the cylinder wall of the cylinder, and the outer diameter of the cylinder is smaller than the outer diameter of the clamping ring (22).

7. A new type of rubber valve seat with stable positioning according to claim 1, characterized in that: The wear-resistant component (21) comprises an inner steel ring (211), and a wear-resistant layer (213) is provided on the outer side of the steel ring (211). Meanwhile, through holes (212) arranged in a ring matrix are provided inside the steel ring (211).

8. A new type of rubber valve seat with stable positioning according to claim 7, characterized in that: The wear-resistant layer (213) is a composite material of graphene and ceramics, and the wear-resistant layer (213) is located at the center of the rubber liner (2), while the shaft seat hole (27) is opened in the annular ring layer of the wear-resistant layer (213).

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