Valve sealing structure and air valve

Abstract

The utility model belongs to the technical field of valves, and particularly discloses a valve sealing structure and an air valve.The valve sealing structure comprises a valve body, a valve seat and a sealing ring, the valve body is provided with a center hole in a counter bore shape, and a first groove is formed in the side wall face of the center hole; the valve seat is located on the inner side of the center hole of the valve body. The sealing ring is located between the valve seat and the valve body, the outer side wall of the sealing ring protrudes to form a first boss matched with the first groove, the sealing ring is assembled on the inner side of the center hole of the valve body through the first boss and the first groove, the inner end of the sealing ring abuts against the valve seat, and 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 the sealing face for sealing. According to the valve sealing structure, an embedded assembling scheme is adopted, bolts are not needed, and the assembling efficiency is high.

Description

Technical Field

[0001] The present application belongs to the field of valve technology, and more specifically, relates to a valve sealing 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 sealing 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 sealing structure, which specifically includes a valve body, a valve seat and a sealing ring, wherein:

[0007] The valve body has a central hole in the shape of a countersunk hole, and a first groove is provided on the side wall surface of the central hole;

[0008] The valve seat is located inside the center hole of the valve body;

[0009] The sealing ring is located between the valve seat and the valve body, and the outer wall of the sealing ring protrudes to form a first boss that adapts to the first groove. The sealing ring is assembled on the inner side of the center hole of the valve body through the first boss and the first groove. The inner end of the sealing ring contacts the valve seat, and 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] Through the above technical solutions conceived in the present application, compared with the existing technology, in this sealing structure, the sealing ring and the valve body are connected by an embedded connection. When the sealing ring is assembled, the valve seat can be positioned in the valve body at the same time, and the assembly is reliable and convenient. This design eliminates the use of bolts, which can effectively reduce costs and improve assembly efficiency.

[0011] As a further preferred embodiment, the outer surface of the first boss is a curved surface.

[0012] As a further preferred embodiment, the inner end of the sealing ring protrudes inward along the wall thickness to form a second boss, and the outer wall surface of the valve seat is provided with a second groove for sealing engagement with the second boss.

[0013] As a further preferred embodiment, the inner end of the sealing ring protrudes outward along the wall thickness to form a third boss, and the third boss contacts and seals against the side wall surface of the central hole.

[0014] As a further preference, the cross section of the outer end of the sealing ring is pointed.

[0015] As a further preference, the first groove is arranged on the side wall surface of the valve body near the opening of the central hole.

[0016] As a further preference, the contact edge between the valve seat and the outer end of the sealing ring protrudes from or is flush with the contact edge between the first boss and the first groove.

[0017] As a further preference, the sealing surface of the valve seat is a slope.

[0018] 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 in contact with the valve body and the valve seat.

[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 sealing 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 sealing structure adopts an embedded connection solution, which realizes the rapid assembly of the sealing ring, valve seat and valve body. It is reliable and easy to install. It does not require the use of bolts and other connectors, which can effectively reduce costs and improve assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a structural diagram of the valve seat, sealing ring and valve body provided in an embodiment of the present application;

[0024] Figure 2 This is an assembly diagram of the valve seat, sealing ring and valve body provided in an embodiment of the present application;

[0025] Figure 3 yes Figure 2 Enlarged view of point A in the middle.

[0026] Throughout the drawings, the same reference numerals are used to denote the same elements or structures, wherein:

[0027] 1. Valve body; 1-1. Center hole; 1-2. First groove; 2. Valve seat; 2-1. Flanged edge; 2-2. Sealing surface; 2-3. Second groove; 3. Sealing ring; 3-1. Inner end; 3-2. First boss; 3-3. Outer end; 3-4. Second boss; 3-5. Third boss. DETAILED DESCRIPTION

[0028] 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.

[0029] The following is combined with Figure 1-3 This application is described in further detail.

[0030] The embodiment of the present application discloses a valve sealing structure. Figure 1-3 As shown, the valve sealing structure includes a valve body 1, a valve seat 2 and a sealing ring 3, wherein the valve body 1 has a center hole 1-1 in the shape of a countersunk hole, and the side wall surface of the center hole 1-1 is provided with a first groove 1-2; the valve seat 2 is located on the inner side of the center hole 1-1 of the valve body 1; the sealing ring 3 is located between the valve seat 2 and the valve body 1, and the outer side wall of the sealing ring 3 protrudes to form a first boss 3-2 adapted to the first groove 1-2, and the sealing ring 3 is assembled on the inner side of the center hole 1-1 of the valve body 1 through the first boss 3-2 and the first groove 1-2, the inner end 3-1 of the sealing ring 3 contacts the valve seat 2, and the outer end 3-3 of the sealing ring 3 protrudes from the sealing surface 2-2 of the valve seat 2 for the valve disc to contact and seal.

[0031] Further, such as Figure 3 As shown, the first groove 1-2 is disposed on the sidewall of the valve body 1 near the opening of the center hole 1-1, and the contact edge between the valve seat 2 and the outer end 3-3 of the sealing ring 3 protrudes beyond the contact edge between the first boss 3-2 and the first groove 1-2. Correspondingly, the first boss 3-2 on the sealing ring 3 is located on the surface of the sealing ring 3 near the outer end 3-3 to match the location of the first groove 1-2, and the outer surface of the first boss 3-2 is preferably a curved surface. In some embodiments, the contact edge between the valve seat 2 and the outer end 3-3 of the sealing ring 3 can also be flush with the contact edge between the first boss 3-2 and the first groove 1-2.

[0032] Under this design, when assembling the valve seat 2, sealing ring 3, and valve body 1, when the sealing ring 3 is initially pushed axially into the center hole 1-1 of the valve body 1, the first protrusion lags behind the assembly front end of the sealing ring 3 (i.e., the inner end 3-1 of the sealing ring 3), allowing the sealing ring 3 to be assembled into the valve body 1 more conveniently. After continuing to push into the center hole 1-1, the first boss 3-2 contacts the side wall of the center hole 1-1 until it enters the first groove 1-2. Through the cooperation between the first boss 3-2 and the first groove 1-2, the sealing ring 3 is prevented from being disengaged and assembled in the center hole 1-1; at the same time, the sealing ring 3 also contacts and locks the valve seat 2 in the center hole 1-1, achieving a stable connection between the valve seat 2, sealing ring 3, and valve body 1.

[0033] Since the contact edge of the valve seat 2 and the outer end 3-3 of the sealing ring 3 protrudes from the contact edge of the first boss 3-2 and the first groove 1-2, the sealing ring 3 can be deformed toward the lower space of the valve seat 2 during installation. This deformation enables the sealing ring 3 to better squeeze the first boss 3-2 into the first groove 1-2, thereby improving the sealing effect. At the same time, it will basically not cause installation difficulties, thereby finding a more appropriate balance between stability and operability.

[0034] Further, such as Figure 3 As shown, in order to improve the installation stability of the sealing ring 3 and the valve seat 2, the inner end 3-1 of the sealing ring 3 protrudes inward along the wall thickness to form a second boss 3-4, and the outer wall surface of the valve seat 2 is provided with a second groove 2-3 for the second boss 3-4 to seal and fit.

[0035] Furthermore, in order to improve the sealing performance between the sealing ring 3 and the valve body 1, the inner end 3-1 of the sealing ring 3 protrudes outward along the wall thickness to form a third boss 3-5. When the sealing ring 3 is assembled in the valve body 1, the third boss 3-5 contacts and seals the side wall of the center hole 1-1.

[0036] Preferably, the outer surface of the third boss 3-5 away from the outer end 3-3 is an inclined surface. The sealing ring 3, the first boss 3-2, the second boss 3-4 and the third boss 3-5 are preferably formed in one piece and are preferably made of rubber or other feasible flexible materials.

[0037] 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. This prevents the sealing ring 3 from being damaged by the valve disc, 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 central hole 1-1 of the valve body 1 is flared.

[0038] Further, such as Figure 3As shown, 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 is protruded outward along the wall thickness to form a flange 2-1. After the sealing ring 3 is assembled inside the center hole 1-1 of the valve cover through the first boss 3-2 and the first groove 1-2, the inner end 3-1 of the sealing ring 3 presses the flange 2-1 against the step surface of the center hole 1-1 to form a flange 2-1. Figure 3 The assembly state shown achieves stable assembly of the sealing ring 3, the valve seat 2 and the valve body 1.

[0039] 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 and the valve seat 2 and improve the sealing performance.

[0040] It should be noted that Figure 1 Only the valve cover portion of the valve body 1 is shown, and the valve cover is a part of the split design of the valve body 1 and belongs to the valve body 1. It can be understood that in some embodiments, an integral valve body 1 can also be used.

[0041] An embodiment of the present application further discloses an air valve, which includes any one of the valve sealing structures described above.

[0042] 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.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] 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 sealing 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 a center hole (1-1) in the shape of a countersunk hole, and a first groove (1-2) is provided on a side wall surface of the center hole (1-1); The valve seat (2) is located inside the center hole (1-1) of the valve body (1); The sealing ring (3) is located between the valve seat (2) and the valve body (1), and the outer wall of the sealing ring (3) is protruded to form a first boss (3-2) adapted to the first groove (1-2). The sealing ring (3) is assembled on the inner side of the center hole (1-1) of the valve body (1) through the first boss (3-2) and the first groove (1-2). The inner end (3-1) of the sealing ring (3) contacts the valve seat (2), and the outer end (3-3) of the sealing ring (3) protrudes from the sealing surface (2-2) of the valve seat (2) for the valve disc to contact and seal.

2. The valve sealing structure according to claim 1, wherein: The outer surface of the first boss (3-2) is a curved surface.

3. The valve sealing structure according to claim 1, wherein: The inner end (3-1) of the sealing ring (3) protrudes inward along the wall thickness to form a second boss (3-4), and the outer wall surface of the valve seat (2) is provided with a second groove (2-3) for sealing engagement with the second boss (3-4).

4. The valve sealing structure according to claim 1, wherein: The inner end (3-1) of the sealing ring (3) protrudes outward along the wall thickness to form a third boss (3-5), and the third boss (3-5) contacts and seals the side wall surface of the central hole (1-1).

5. The valve sealing structure according to claim 1, wherein: The cross section of the outer end (3-3) of the sealing ring (3) is pointed.

6. The valve sealing structure according to claim 1, wherein: The first groove (1-2) is arranged on the side wall of the valve body (1) at an opening position close to the central hole (1-1).

7. The valve sealing structure according to any one of claims 1 to 6, characterized in that: The contact edge between the valve seat (2) and the outer end (3-3) of the sealing ring (3) protrudes from or is flush with the contact edge between the first boss (3-2) and the first groove (1-2).

8. The valve sealing 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.

9. The valve sealing structure according to any one of claims 1 to 6, characterized in that: 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 (2-1), and the flange (2-1) contacts the valve body (1) and the valve seat (2).

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

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