Elastic sealing ring

Abstract

The utility model relates to an elastic sealing ring which is installed between two workpieces and comprises a rubber ring, an elastic supporting piece and an air bag, a containing cavity is formed in the rubber ring, the elastic supporting piece is installed in the containing cavity and abuts against the inner wall of the containing cavity, and the air bag is installed between the elastic supporting piece and the rubber ring. According to the elastic sealing ring, the air bag is installed between the elastic supporting piece and the rubber ring, the elastic supporting piece is made of high-elasticity rubber and can support the containing cavity, the containing cavity is prevented from collapsing in a high-pressure state, the air bag is in an inflated state, after the rubber ring is pressed to deform, the air bag is pressed to expand, and therefore the rubber ring is reset; the elastic supporting piece and the air bag can provide elastic force compensation for the rubber ring, the sealing effectiveness of the rubber ring in an extreme environment is guaranteed, meanwhile, the elastic supporting piece increases the pressure bearing capacity of the whole elastic sealing ring to a certain degree, the problems of breakage and deformation of the elastic sealing ring in long-term use are solved, and the elastic sealing ring is more durable.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing rings, in particular to an elastic sealing ring. Background Technique

[0002] As a commonly used mechanical part, the sealing ring is widely used in various industries. The vast majority of commonly used sealing rings are single sealing rings made of rubber, and the sealing force is mainly provided by the system itself and the elasticity of the sealing ring lip.

[0003] The prior art proposes a sealing ring with a metal spring as the inner lining, which is made by arranging a single-layer spiral spring in a non-metallic sealing lip, and uses the built-in spiral spring to provide elastic compensation force for the sealing ring. However, due to the pitch of the spring after processing, that is, there is no spring to provide elastic force between the pitches, that is, the elastic compensation of the sealing lip is not continuous and uniform, which causes the sealing ring to be very easy to leak when sealing low-molecular gases and low-temperature media. Content of the Utility Model

[0004] The main purpose of the utility model is to provide an elastic sealing ring to solve the above technical problems. The elastic support and the airbag can provide elastic compensation for the rubber ring, ensuring the sealing effectiveness of the rubber ring in extreme environments.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme:

[0006] An elastic sealing ring is installed between two workpieces, including a rubber ring, an elastic support and an airbag. An installation cavity is arranged in the rubber ring. The elastic support is installed in the installation cavity, and the elastic support is in contact with the inner wall of the installation cavity. The airbag is installed between the elastic support and the rubber ring.

[0007] As a preferred technical scheme, the elastic support includes a support column and a support base. The support columns are arranged along the circumference of the support base. The airbag is installed between two adjacent support columns, and the support columns are in contact with the rubber ring.

[0008] As a preferred technical scheme, an oil seal groove is arranged on the rubber ring. The oil seal groove is arranged on both sides of the rubber ring. Both ends of the oil seal groove are in contact with the workpiece, and sealing oil is stored in the oil seal groove.

[0009] As a preferred technical scheme, the rubber ring includes a heat insulation layer and a high-elastic rubber layer, and the high-elastic rubber layer is compounded between two heat insulation layers.

[0010] The beneficial effects of the present utility model are as follows: for the above-mentioned elastic sealing ring, the airbag is installed between the elastic support member and the rubber ring. The elastic support member is made of high-elastic rubber and can support the placement cavity to prevent the placement cavity from collapsing under high pressure. The airbag is in an inflated state. After the rubber ring is deformed under pressure, the airbag is compressed and expanded, so that the rubber ring is reset. The elastic support member and the airbag can provide elastic force compensation for the rubber ring, ensuring the sealing effectiveness of the rubber ring in extreme environments. At the same time, the elastic support member also increases the pressure-bearing capacity of the entire elastic sealing ring to a certain extent, avoiding the problems of fracture and deformation of the elastic sealing ring during long-term use, and being more durable. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a schematic structural diagram of the elastic sealing ring related to the present utility model;

[0012] Figure 2 is a half-sectional view of the elastic sealing ring related to the present utility model;

[0013] Figure 3 is a cross-sectional view of the rubber ring related to the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0014] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0015] As Figure 1 and Figure 2 shown, an elastic sealing ring is installed between two workpieces and includes a rubber ring 1, an elastic support member 2 and an airbag 3. An accommodation cavity 4 is provided in the rubber ring 1. The elastic support member 2 is installed in the accommodation cavity 4 and the elastic support member 2 abuts against the inner wall of the accommodation cavity 4. The airbag 3 is installed between the elastic support member 2 and the rubber ring 1. The elastic support member 2 is made of high-elastic rubber and can support the accommodation cavity 4 to prevent the accommodation cavity 4 from collapsing under high pressure. The airbag 3 is in an inflated state. After the rubber ring 1 is deformed under pressure, the airbag 3 is compressed and expanded, so that the rubber ring 1 is reset. The elastic support member 2 and the airbag 3 can provide elastic force compensation for the rubber ring 1, ensuring the sealing effectiveness of the rubber ring 1 in extreme environments. At the same time, the elastic support member 2 also increases the pressure-bearing capacity of the entire elastic sealing ring to a certain extent, avoiding the problems of fracture and deformation of the elastic sealing ring during long-term use, and being more durable.

[0016] The elastic support member 2 includes support columns 22 and a support base 21. In this embodiment, there are four support columns 22, and the four support columns 22 are arranged along the circumference of the support base 21. The support columns 22 are in contact with the rubber ring 1, thereby supporting four angles of the placement cavity 4. The airbag 3 is installed between two adjacent support columns 22, thereby restricting the movement position of the airbag 3 and preventing the pressure-receiving position of the airbag 3 from shifting.

[0017] An oil seal groove 11 is provided on the rubber ring 1. The oil seal groove 11 is provided on both sides of the rubber ring 1. Specifically, the oil seal groove 11 is arranged according to the position of the workpiece. The two ends of the oil seal groove 11 are in contact with the workpiece, and sealing oil is stored in the oil seal groove 11. Thus, the sealing oil is stored between the oil seal groove 11 and the workpiece to form an oil seal, so as to ensure a sealed state between the two workpieces.

[0018] As Figure 3 shown, the rubber ring 1 includes a high-elastic rubber layer 13, a first heat-insulating layer 12, and a second heat-insulating layer 14. The high-elastic rubber layer 13 is compounded between the first heat-insulating layer 12 and the second heat-insulating layer 14. Both the first heat-insulating layer 12 and the second heat-insulating layer 14 are made of polymer materials, having high heat resistance and heat insulation properties. The first heat-insulating layer 12 and the second heat-insulating layer 14 made of polymer materials provide a heat-insulating effect for the elastic sealing ring, and can effectively avoid the phenomenon that the sealing ring is prone to spontaneous combustion under high temperature and high pressure.

[0019] The above-described embodiments are only preferred examples of the present invention, and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made according to the structures, features, and principles described in the scope of the patent application of the present invention should be included within the scope of the patent application of the present invention.

Claims

1. An elastic sealing ring is installed between two workpieces, and is characterized in that It includes a rubber ring, an elastic support member and an airbag. An accommodation cavity is provided in the rubber ring. The elastic support member is installed in the accommodation cavity, and the elastic support member abuts against the inner wall of the accommodation cavity. The airbag is installed between the elastic support member and the rubber ring.

2. The elastic sealing ring according to claim 1, characterized in that, The elastic support member includes a support column and a support base. The support columns are arranged along the circumference of the support base. The airbag is installed between two adjacent support columns, and the support columns abut against the rubber ring.

3. The elastic sealing ring according to claim 1, characterized in that An oil seal groove is provided on the rubber ring. The oil seal groove is provided on both sides of the rubber ring. Both ends of the oil seal groove abut against the workpiece, and sealing oil is stored in the oil seal groove.

4. The elastic sealing ring according to claim 1, characterized in that, The rubber ring includes a heat insulation layer and a high-elastic rubber layer. The high-elastic rubber layer is compounded between two heat insulation layers.

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