Valve seat sealing assembly structure and air valve

Abstract

The utility model belongs to the technical field of valves, and particularly discloses a valve seat sealing and assembling structure and an air valve.The valve seat sealing and assembling structure comprises a valve body, a valve seat and a sealing ring, the valve body is provided with an assembling opening, and a first protrusion is arranged on the side wall face of the assembling opening; the valve seat is located on the inner side of the assembling opening of the valve body, and a side groove is formed in the side wall face of the valve seat. The sealing ring is located between the valve seat and the valve body, a first groove matched with the first protrusion is formed in the side wall face of the sealing ring, the sealing ring is assembled on the inner side of the assembling opening of the valve body through the first protrusion and the first groove, and the inner end of the sealing ring abuts against the valve seat and can be partially squeezed into the side groove. The outer end of the sealing ring protrudes out of the sealing face of the valve seat so that the valve clack can abut against and seal. According to the valve seat sealing assembly structure, an embedded assembly scheme is adopted, bolts are not needed, and the assembly efficiency is high.

Description

Technical Field

[0001] The present application belongs to the field of valve technology, and more specifically, relates to a valve seat sealing assembly structure and an air valve. Background Art

[0002] A valve is a device used to control the flow of fluids (such as liquids and gases). They control the flow by opening, closing, or partially regulating the flow path of the fluid.

[0003] To prevent fluid leakage when the valve is closed or in the open state, specialized sealing structures are often incorporated into valves. For example, a high-pressure air valve described in Chinese patent publication CN220102248U incorporates a valve seat and seat seal ring inside the valve body. As the liquid level within the valve rises, the valve disc rises and contacts the seat seal ring, creating a seal that strengthens the seal between the disc and seat and prevents water from leaking out after the center hole is closed.

[0004] However, the valve seat and valve body in this type of valve adopt a bolt connection design, which increases the assembly process; moreover, the connection between the bolt and the threaded hole of the valve seat is relatively inconvenient, affecting the assembly efficiency. Utility Model Content

[0005] In response to the defects or improvement needs of the existing technology, the present application provides a valve seat sealing assembly structure and an air valve, aiming to improve the problem of low assembly efficiency of traditional bolt-connected sealing structures.

[0006] The present application provides a valve seat sealing assembly structure, which specifically includes a valve body, a valve seat and a sealing ring, wherein:

[0007] The valve body has an assembly opening, and a side wall surface of the assembly opening is provided with a first protrusion;

[0008] The valve seat is located inside the assembly opening of the valve body, and a side groove is provided on the side wall surface of the valve seat;

[0009] The sealing ring is located between the valve seat and the valve body, and the side wall surface of the sealing ring is provided with a first groove adapted to the first protrusion. The sealing ring is assembled on the inner side of the assembly port of the valve body through the first protrusion and the first groove. The inner end of the sealing ring contacts the valve seat and can be partially squeezed into the side groove. The outer end of the sealing ring protrudes from the sealing surface of the valve seat for the valve disc to contact and seal.

[0010] The above technical solution conceived by this application, compared with the existing technology, in this valve seat sealing assembly structure, the sealing ring and the valve body adopt a concave-convex embedded connection scheme. When the sealing ring is assembled in the valve body, the sealing ring can also prevent the valve seat from being positioned in the valve body, resulting in a secure assembly and excellent sealing effect. In addition, this solution also provides side grooves on the valve seat, which can provide a buffer and accommodation space for the sealing ring. This allows the sealing ring to deform and squeeze into the side groove of the valve seat due to the extrusion force generated during the assembly process, facilitating the installation of the sealing ring. Compared with the bolt assembly solution, this solution eliminates the use of bolts, which can effectively reduce costs and improve assembly efficiency.

[0011] As a further preference, the outer surface of the first protrusion is axially protruding from or flush with the notch edge of the side groove.

[0012] As a further preference, the cross-sections of the side groove and the first groove are arc-shaped.

[0013] As a further preference, one end of the valve seat away from its own sealing surface protrudes outward along the wall thickness to form a flange, and the flange is resisted by the sealing ring and positioned in the valve body.

[0014] As a further preferred embodiment, a second groove is provided on the side wall surface of the valve seat, and the inner end of the sealing ring protrudes inward along the wall thickness to form a second protrusion, and the second protrusion is sealingly engaged with the second groove.

[0015] As a further preference, the second groove is located at an end of the side groove away from the outer end of the sealing ring.

[0016] As a further preference, the sealing surface of the valve seat is a slope.

[0017] As a further preference, the cross section of the outer end of the sealing ring is pointed.

[0018] As a further preferred embodiment, a gap is left between the circumferential surface of the inner end of the valve seat and the inner wall of the assembly port.

[0019] The second aspect of the present application provides an air valve adopting the following technical solution:

[0020] An air valve comprises any one of the valve seat sealing assembly structures described in the first aspect.

[0021] In general, the above technical solutions conceived by this application have the following technical advantages compared with the existing technologies:

[0022] 1. This valve seat seal assembly structure adopts an embedded assembly solution. When the sealing ring is assembled in the valve body, the sealing ring can also be used to abut and position the valve seat in the valve body, achieving rapid assembly. The assembly is not only secure, but also has an excellent sealing effect. At the same time, this solution also provides side grooves on the valve seat to provide a buffer and accommodation space for the sealing ring. The side grooves allow the sealing ring to deform and squeeze into the side grooves of the valve seat due to the extrusion force generated during the assembly process, facilitating the installation of the sealing ring.

[0023] 2. This valve seat seal assembly structure does not require bolts, which can effectively reduce costs and improve assembly efficiency compared to bolt assembly solutions. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a structural diagram of a valve seat sealing assembly structure and a valve disc provided in an embodiment of the present application;

[0025] Figure 2 This is an assembly diagram of the valve body, valve seat, and sealing ring provided in an embodiment of the present application;

[0026] Figure 3 It is a schematic diagram of the partial structure of the valve body, valve seat and sealing ring provided in an embodiment of the present application.

[0027] Throughout the drawings, the same reference numerals are used to denote the same elements or structures, wherein:

[0028] 1. Valve body; 1-1. Assembly port; 1-2. First protrusion; 2. Valve seat; 2-1. Side groove; 2-2. Sealing surface; 2-3. Flange; 2-4. Second groove; 3. Sealing ring; 3-1. First groove; 3-2. Inner end; 3-3. Outer end; 3-4. Second protrusion; 4. Valve disc; 5. Gap. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of this application more clear, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0030] The following is combined with Figure 1-Figure 3 This application is described in further detail.

[0031] The embodiment of the present application discloses a valve seat sealing assembly structure. Figure 1-Figure 3The valve seat sealing assembly structure includes a valve body 1, a valve seat 2 and a sealing ring 3, wherein the valve body 1 has an assembly port 1-1, and the side wall surface of the assembly port 1-1 is provided with a first protrusion 1-2; the valve seat 2 is located on the inner side of the assembly port 1-1 of the valve body 1, and the side wall surface of the valve seat 2 is provided with a side groove 2-1; the sealing ring 3 is located between the valve seat 2 and the valve body 1, and the side wall surface of the sealing ring 3 is provided with a first groove 3-1 adapted to the first protrusion 1-2. The sealing ring 3 is assembled on the inner side of the assembly port 1-1 of the valve body 1 through the first protrusion 1-2 and the first groove 3-1. The inner end 3-2 of the sealing ring 3 contacts the valve seat 2 and can be partially squeezed into the side groove 2-1. The outer end 3-3 of the sealing ring 3 protrudes from the sealing surface 2-2 of the valve seat 2 for contact and sealing with the valve disc 4.

[0032] Further, such as Figure 3 As shown, in order to improve the installation stability of the valve seat 2 in the valve body 1, the end of the valve seat 2 away from its own sealing surface 2-2 protrudes outward along the wall thickness to form a flange 2-3, which is resisted by the sealing ring 3 and positioned in the valve body 1.

[0033] Further, such as Figure 3 As shown, to improve the installation stability of the sealing ring 3 and the valve seat 2, a second groove 2-4 is provided on the side wall of the valve seat 2. The inner end 3-2 of the sealing ring 3 protrudes inward along the wall thickness to form a second protrusion 3-4, which seals and fits in the second groove 2-4. Preferably, the second groove 2-4 is located at the end of the side groove 2-1 away from the outer end 3-3 of the sealing ring 3.

[0034] Under this design, the sealing ring 3 and the valve seat 2 can be preliminarily connected as a whole through the second groove 2-4 and the second protrusion 3-4, so as to facilitate the overall assembly of the sealing ring 3, the valve seat 2 and the valve body 1.

[0035] Furthermore, the sealing ring 3 is made of a flexible / elastic material, including but not limited to rubber. When the sealing ring 3, the valve seat 2, and the valve body 1 are assembled as one, the sealing ring 3 can be deformed by the compression of the valve seat 2 and the valve body 1, thereby forming a stable seal between the sealing ring 3, the valve seat 2, and the valve body 1.

[0036] Furthermore, in some embodiments, a gap 5 is provided between the circumferential surface of the inner end of the valve seat 2 and the inner wall of the assembly opening 1-1. In this design, the remaining gap 5 facilitates adaptive sealing of the sealing ring 3, allowing the sealing ring 3 to have sufficient deformation margin, thereby reducing the assembly precision requirements between the valve body 1, valve seat 2, and sealing ring 3.

[0037] Furthermore, in some embodiments, the inner end 3-2 of the sealing ring 3 radially protrudes from the valve seat 2, and the outer edge of the inner end 3-2 of the sealing ring 3 has a chamfered structure. With this design, when the sealing ring 3 is pushed axially into the assembly opening 1-1 of the valve body 1, the chamfered structure of the sealing ring 3 facilitates the sealing ring 3 to pass smoothly through the first protrusion 1-2, thereby facilitating the assembly of the sealing ring 3 and the valve body 1.

[0038] Furthermore, in some embodiments, the outer surface of the first protrusion 1-2 is axially protruding from or flush with the notch edge of the side groove 2-1. Figure 3 As shown, in this embodiment, the first protrusion 1-2 and the side groove 2-1 are approximately at the same height. At the same time, the outer surface of the first protrusion 1-2 protrudes from the contact edge of the side groove 2-1 in the axial direction.

[0039] With this design, the side groove provides a buffer and accommodation space for the sealing ring 3. During installation, the sealing ring 3 can be precisely deformed toward the side groove 2-1 of the valve seat 2 due to the extrusion force generated during installation. This deformation causes the sealing ring 3 to partially embed into the side groove 2-1 (i.e., the rubber portion of the sealing ring 3 near the side groove 2-1 is forced back into the side groove 2-1 due to the extrusion force), thereby facilitating the installation of the sealing ring 3. After the sealing ring 3 is integrally installed with the valve body 1, the portion of the sealing ring 3 that was squeezed into the side groove 2-1 can also rebound to clear the side groove 2-1.

[0040] Furthermore, the sealing surface 2 - 2 of the valve seat 2 is an inclined surface. The inclined surface design can increase the sealing bonding area between the valve disc 4 and the valve seat 2 and improve the sealing performance.

[0041] Further, such as Figure 3 As shown, the outer end 3-3 of the sealing ring 3 has a pointed cross-section. A gap is formed between the pointed end and the valve body 1, providing a deformation margin for the sealing ring 3 when it is impacted by the valve disc 4. This makes the sealing ring 3 less susceptible to damage due to the compression of the valve disc 4, thereby extending the life of the sealing ring 3. Adaptively, to facilitate the assembly of the sealing ring 3 and to provide sufficient deformation margin for the sealing ring 3, the opening of the assembly port 1-1 of the valve body 1 is flared.

[0042] Under the design of this assembly scheme, after the valve body 1, the valve seat 2 and the sealing ring 3 are assembled into one, the sealing ring 3 is assembled on the inner side of the assembly port 1-1 of the valve body 1 through the first protrusion 1-2 and the first groove 3-1; the sealing ring 3 and the valve seat 2 form a concave-convex fitting assembly through the second protrusion 3-4 and the second groove 2-4. The sealing ring 3 can also be deformed and squeezed into the side groove 2-1 of the valve seat due to the extrusion force generated during the assembly process, thereby reducing the difficulty of installing the sealing ring 3.

[0043] In addition, an embodiment of the present application further discloses an air valve, which includes any one of the above-mentioned valve seat sealing assembly structures.

[0044] It should be understood that expressions such as "include" and "may include" used in this application indicate the existence of the disclosed functions, operations, or constituent elements, and do not limit one or more additional functions, operations, and constituent elements. In this application, terms such as "include" and / or "have" may be interpreted as indicating a specific characteristic, number, operation, constituent element, component, or combination thereof, but may not be interpreted as excluding the existence or possibility of adding one or more other characteristics, numbers, operations, constituent elements, components, or combinations thereof.

[0045] It should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0046] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0047] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0048] It is easy for those skilled in the art to understand that the above is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A valve seat sealing assembly structure, characterized in that: It comprises a valve body (1), a valve seat (2) and a sealing ring (3), wherein: The valve body (1) has an assembly opening (1-1), and a first protrusion (1-2) is provided on a side wall surface of the assembly opening (1-1); The valve seat (2) is located inside the assembly opening (1-1) of the valve body (1), and a side groove (2-1) is provided on the side wall surface of the valve seat (2); The sealing ring (3) is located between the valve seat (2) and the valve body (1); a first groove (3-1) adapted to the first protrusion (1-2) is provided on the side wall of the sealing ring (3); the sealing ring (3) is assembled on the inner side of the assembly opening (1-1) of the valve body (1) through the first protrusion (1-2) and the first groove (3-1); the inner end (3-2) of the sealing ring (3) contacts the valve seat (2) and can be partially squeezed into the side groove (2-1); the outer end (3-3) of the sealing ring (3) protrudes from the sealing surface (2-2) of the valve seat (2) for contact and sealing by the valve disc (4).

2. The valve seat sealing assembly structure according to claim 1, characterized in that: The outer surface of the first protrusion (1-2) is axially protruding from or flush with the notch edge of the side groove (2-1).

3. The valve seat sealing assembly structure according to claim 1, characterized in that: The cross sections of the side groove (2-1) and the first groove (3-1) are arc-shaped.

4. The valve seat sealing assembly structure according to claim 1, wherein: One end of the valve seat (2) away from its own sealing surface (2-2) protrudes outward along the wall thickness to form a flange (2-3), and the flange (2-3) is pressed against by the sealing ring (3) and positioned in the valve body (1).

5. The valve seat sealing assembly structure according to claim 1, wherein: The side wall surface of the valve seat (2) is provided with a second groove (2-4), and the inner end (3-2) of the sealing ring (3) protrudes inward along the wall thickness to form a second protrusion (3-4), and the second protrusion (3-4) is sealed and embedded in the second groove (2-4).

6. The valve seat sealing assembly structure according to claim 5, characterized in that: The second groove (2-4) is located at an end of the side groove (2-1) away from the outer end (3-3) of the sealing ring (3).

7. The valve seat sealing assembly structure according to any one of claims 1 to 6, characterized in that: The sealing surface (2-2) of the valve seat (2) is an inclined surface.

8. The valve seat sealing assembly structure according to any one of claims 1 to 6, characterized in that: The cross section of the outer end (3-3) of the sealing ring (3) is pointed.

9. The valve seat sealing assembly structure according to any one of claims 1 to 6, characterized in that: A gap (5) is left between the circumferential surface of the inner end of the valve seat (2) and the inner wall of the assembly port (1-1).

10. An air valve, characterized in that: The valve seat sealing assembly structure comprises the valve seat sealing assembly structure as described in any one of claims 1 to 9.

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