Elastic sealing element

Abstract

The utility model relates to the technical field of mechanical sealing devices, and discloses an elastic sealing element which comprises a connecting body, supporting pieces are connected to the two ends of the connecting body respectively, sealing bodies are connected to the two supporting pieces respectively, and the two sealing bodies abut against each other. The first sealing layer is formed by the outer side wall of the sealing piece and the upper inner side wall and the lower inner side wall of the sealing space, the second sealing layer is formed by the two sealing bodies abutting against each other, if cracks and small holes are generated in the maximum stress deformation part of the connecting body, the sealing bodies play a sealing role, the service life of the sealing piece is prolonged, and the sealing performance of the sealing piece is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of mechanical sealing devices and discloses an elastic sealing element. Background Technology

[0002] In mechanical engineering and the fields of gas and fluid transmission, elastic sealing rings are core components for preventing gas or fluid leakage, and their performance directly affects the safety and reliability of equipment operation. Existing elastic sealing rings generally adopt a C-shaped sealing ring structure, which can only achieve a single-layer seal. In actual use, due to wear or loading, pores may appear on the surface or at stress concentration points of the C-shaped sealing ring. Once pores appear, the sealing ring will fail, requiring replacement of the entire sealing ring. This not only increases maintenance costs but may also affect the normal operation of equipment and even cause safety accidents if replacement is not timely. Therefore, there is an urgent need for an elastic sealing component that can solve the above problems. Utility Model Content

[0003] The purpose of this invention is to provide an elastic sealing element to solve the technical problem that the sealing ring can only achieve single-layer sealing, and the C-shaped sealing ring fails due to long-term wear or small pores appearing on the surface at stress concentration points.

[0004] To achieve the above-mentioned technical effects, the technical solution adopted by this utility model is: an elastic sealing element, characterized in that it includes: a connecting body, with support members connected to both ends of the connecting body, and sealing bodies connected to the two support members respectively, with the two sealing bodies abutting against each other.

[0005] In a preferred embodiment, the sealing element is a hollow annular structure, and a sealing chamber is formed inside the sealing element by the connecting body, the two supporting members, and the two sealing bodies.

[0006] In a preferred embodiment, the two supports form an angle toward the inside of the seal, and when the connector is compressed toward the center of the sealing chamber, the two supports abut against each other.

[0007] In this embodiment, the sealing performance of traditional sealing rings relies excessively on the deformation of elastic materials. When subjected to radial loads for a long time, they are prone to plastic deformation or fatigue fracture, resulting in gaps at the sealing interface. Especially under the impact of high-pressure fluids, the elastomer undergoes stress relaxation due to excessive compression, and the leakage rate increases exponentially with the service time. In this application, the support component can absorb most of the vibration energy in the high-frequency vibration environment of the sealing ring, reducing fatigue damage to the connecting body and effectively improving the service life and sealing performance of the sealing component.

[0008] In a preferred embodiment, the seal has a heart-shaped cross-section, the two connecting bodies are distributed axially and parallel to each other, and the connecting bodies have an arc-shaped structure.

[0009] As a preferred embodiment, the included angle range is set to 120°-150°.

[0010] As a preferred embodiment, the seal is a one-piece molded structure.

[0011] In a preferred embodiment, the sealed chamber is filled with a sealing medium.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] When the sealing element of this application is placed in the sealed space of the equipment, it can form a double seal. The first layer of seal is formed by the outer wall of the sealing element and the upper and lower inner walls of the sealed space. The second layer of seal is formed by the two sealing bodies abutting each other. If the connecting body is subjected to the most stress deformation and cracks and small holes appear, the sealing body will play a sealing role, thereby improving the service life and sealing performance of the sealing element. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the sealing element of this utility model;

[0015] Figure 2 for Figure 1 Cross-sectional view of the AA seal;

[0016] Figure 3 for Figure 1 A cross-sectional view of the AA seal in compression state;

[0017] Figure label:

[0018] 1. Connector; 2. Support; 3. Sealing body; 4. Sealing chamber; 5. Sealing element. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the embodiments and accompanying drawings. However, this should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0020] refer to Figure 1 Example 1: An elastic seal includes a connector 1, with support members 2 connected to both ends of the connector 1, and sealing bodies 3 connected to the two support members 2 respectively, with the two sealing bodies 3 abutting against each other.

[0021] In a preferred embodiment of this invention, the sealing element 5 is a one-piece molded structure. The one-piece molded structure reduces the connection gaps between various components, improves the overall strength and sealing performance of the sealing element 5, and avoids leakage problems caused by improper connection of components.

[0022] refer to Figure 1 , 2 Example 2: An elastic seal, based on Example 1, wherein the seal 5 is a hollow annular structure, and the connecting body 1, the two supporting members 2 and the two sealing bodies 3 form a sealing chamber 4 inside the seal 5. The sealing chamber 4 provides space for subsequent filling of the sealing medium, further enhancing the sealing effect.

[0023] The two support members 2 form an angle towards the inside of the seal 5, and when the connecting body 1 is compressed towards the center of the sealing chamber 4, the two support members 2 abut against each other. In traditional sealing rings, the sealing performance relies excessively on the deformation of the elastic material, and plastic deformation or fatigue fracture easily occurs when subjected to radial loads for a long time, resulting in gaps at the sealing interface; especially under high-pressure fluid impact, the elastomer undergoes stress relaxation due to excessive compression, and the leakage rate increases exponentially with the service time. In this application, however, in a high-frequency vibration environment, the support member 2 can absorb most of the vibration energy, reduce fatigue damage to the connecting body 1, and effectively improve the service life and sealing performance of the seal 5.

[0024] In a preferred embodiment of this invention, the sealing element 5 has a heart-shaped cross-section, and the two connecting bodies 1 are axially distributed and parallel to each other, with the connecting bodies 1 having an arc-shaped structure. This unique cross-sectional shape and connecting body 1 structure allow the sealing element 5 to better fit with the sealing space during installation and use, thereby enhancing the sealing effect.

[0025] In a preferred embodiment of this invention, the included angle is set within the range of 120°-150°. Through practice and research, this angle range has been found to ensure the strength and elasticity of the support member 2 while allowing the support member 2 to better abut against the connector 1 when compressed, thus achieving the best sealing effect.

[0026] In a preferred embodiment of this invention, the sealing chamber 4 is filled with a sealing medium. After being filled with the sealing medium, the sealing chamber 4 can further assist the sealing body 3 in achieving a seal, forming multiple layers of sealing protection. Even if the sealing element 5 experiences significant stress due to structural compression, resulting in cracks or pinholes, the sealing medium can still prevent leakage to a certain extent, improving the reliability of the sealing element 5.

[0027] In use, the elastic seal of this utility model includes a connecting body 1, with support members 2 connected to both ends of the connecting body 1, and sealing bodies 3 connected to the two support members 2 respectively, with the two sealing bodies 3 abutting against each other. The connecting body 1, the two support members 2, and the two sealing bodies 3 form a sealing chamber 4 inside the seal 5, and the sealing chamber 4 is filled with a sealing medium.

[0028] The two support members 2 form an angle between them and the inside of the seal 5. The angle ranges from 120° to 150°. In this embodiment, the angle is 135°. The seal 5 has a heart-shaped cross-section. The two connecting bodies 1 are distributed along the axial direction and are parallel to each other. The connecting bodies 1 have an arc-shaped structure. This structure gives the seal 5 good elasticity and adaptability.

[0029] When the sealing element 5 is placed into the sealed space of the equipment, the first layer of seal is formed, that is, the seal formed by the outer wall of the sealing element 5 and the inner wall of the sealed space; at the same time, the two sealing bodies 3 abut against each other to form the second layer of seal. If cracks or small holes appear on the connecting body 1, the sealing body 3 will play a sealing role, which improves the service life and sealing performance of the sealing element. At this time, the sealing body 3 and the sealing medium in the sealing chamber 4 will play a sealing role together.

[0030] In a high-frequency vibration environment, the support 2 can absorb most of the vibration energy, reduce fatigue damage to the connector 1 and the seal 3, thereby extending the service life of the seal 5. When the connector 1 is compressed toward the center of the sealing chamber 4, the two support 2 abut against each other, further enhancing the structural stability and sealing performance of the seal 5.

[0031] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An elastic seal, characterized in that, include: A connector (1) is connected to two support members (2) at both ends, and two sealing bodies (3) are connected to the two support members (2) respectively, with the two sealing bodies (3) abutting against each other.

2. The elastic seal according to claim 1, characterized in that, The sealing element (5) is a hollow annular structure, and the connecting body (1), the two supporting members (2) and the two sealing bodies (3) form a sealed chamber (4) inside the sealing element (5).

3. The elastic seal according to claim 2, characterized in that, The two support members (2) form an angle toward the inside of the seal (5), and when the connector (1) is compressed toward the center of the sealing chamber (4), the two support members (2) abut against each other.

4. The elastic seal according to claim 3, characterized in that, The seal (5) has a heart-shaped cross section, the two connectors (1) are distributed along the axial direction and are parallel to each other, and the connectors (1) have an arc-shaped structure.

5. The elastic seal according to claim 4, characterized in that, The included angle is set within the range of 120°-150°.

6. The elastic seal according to claim 5, characterized in that, The sealing element (5) is a one-piece molded structure.

7. The elastic seal according to claim 6, characterized in that, The sealed chamber (4) is filled with a sealing medium.

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