Combined sealing ring

Abstract

The utility model relates to the technical field of sealing rings, and provides a combined sealing ring which comprises a pair of main bodies, an annular inner edge is arranged in each main body, a sealing ring is sleeved between the two main bodies, the outer wall of the sealing ring abuts against an inner cavity of the main body, a spiral spring is connected between the sealing ring and the inner edge, and the spiral spring is connected with the inner edge of the main body. A containing gap is formed between the two main bodies. The sealing ring overcomes the defects in the prior art, is reasonable in design and compact in structure, can play a buffering and adjusting role when pressure changes or vibrates due to elastic deformation of the spiral spring, guarantees the good sealing performance of the sealing ring all the time, and adapts to complex working conditions. The outer wall of the sealing ring and the inner cavity of the main body form primary sealing, the auxiliary body enhances sealing performance and can deform to fill small gaps, and medium leakage is effectively prevented through double sealing.

Description

Technical Field

[0001] This utility model relates to the field of sealing ring technology, and specifically to a combined sealing ring. Background Technology

[0002] In many industrial fields, such as hydraulic systems and pneumatic systems, sealing rings are key components that ensure the normal operation of the system and prevent media leakage. However, in actual working processes, sealing parts often face complex working conditions.

[0003] On the one hand, the pressure of the medium in the system is not constant and there will be pressure fluctuations. On the other hand, the equipment will also vibrate during operation. These pressure fluctuations and vibrations will have a continuous impact on the sealing ring, making it difficult for ordinary sealing rings to maintain good sealing performance. This can easily lead to sealing failure, medium leakage and other problems, which will affect the normal operation of the entire system and even cause safety accidents and economic losses. Therefore, we propose a combined sealing ring. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] In view of the shortcomings of the prior art, this utility model provides a combined sealing ring to solve the above-mentioned problems existing in the prior art.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution: a combined sealing ring, comprising a pair of main bodies, each main body having an annular inner edge inside, a sealing ring being sleeved between the two main bodies, the outer wall of the sealing ring abutting against the inner cavity of the main body, and a helical spring connecting the sealing ring and the inner edge to form an accommodating gap between the two main bodies.

[0008] Furthermore, a secondary body is provided within the accommodating gap and sleeved on the outer wall of the sealing ring.

[0009] Furthermore, each of the two main bodies has an annular chamfer on its opposite side to allow space for the deformation of the sub-body.

[0010] Furthermore, the two edges of the chamfer are rounded.

[0011] Furthermore, the inner diameter of the sealing ring is the same as the inner diameter of the inner edge.

[0012] Furthermore, the sub-body is made of rubber material.

[0013] Furthermore, the helical spring has a flat helical structure.

[0014] (III) Beneficial Effects

[0015] This utility model embodiment provides a combined sealing ring. It has the following beneficial effects:

[0016] 1. The elastic deformation of the helical spring can buffer and adjust when pressure changes or vibrations occur, ensuring that the sealing ring always maintains good sealing performance and adapts to complex working conditions.

[0017] 2. The outer wall of the sealing ring forms a preliminary seal with the inner cavity of the main body, and the sub-body enhances the sealing performance and can deform to fill tiny gaps. The double seal effectively prevents media leakage. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of the sealing ring structure of this utility model;

[0019] Figure 2 This is a schematic diagram showing the main body and sub-body structures of this utility model separated.

[0020] Figure 3 This utility model Figure 1 Structural front view schematic diagram;

[0021] Figure 4 This utility model Figure 1 Top view of the structure;

[0022] Figure 5 This utility model Figure 1 3D sectional view of the structure;

[0023] Figure 6 This utility model Figure 5 Structural front view schematic diagram.

[0024] In the diagram: 1. Main body; 2. Inner edge; 3. Sealing ring; 4. Helical spring; 5. Accommodation gap; 6. Sub-body; 7. Chamfer. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] See attached document Figure 1-6A combined sealing ring includes a pair of main bodies 1, both of which are annular structures made of metal. Each main body 1 has an inner annular edge 2 inside. A sealing ring 3 is fitted between the two main bodies 1. The outer wall of the sealing ring 3 abuts against the inner cavity of the main body 1, so that the outer wall of the sealing ring 3 and the inner walls of the two main bodies 1 form a preliminary seal. The upper and lower sides of the sealing ring 3 are provided with helical springs 4 connected to the inner edge 2, so that a receiving gap 5 is formed between the two main bodies 1. During operation, when the sealing part is subjected to the pressure of the medium, the two main bodies 1 will further compress the helical springs 4. The elastic force of the helical springs 4 can continuously provide pre-tightening force for the sealing ring 3, ensuring that the sealing ring 3 and the inner cavity of the main body 1 always remain in tight contact. At the same time, when the pressure changes or the sealing part vibrates, the elastic deformation of the helical springs 4 can play a buffering and adjusting role, reducing the impact and vibration of the sealing ring and extending the service life of the sealing ring.

[0027] In this embodiment, in order to further enhance the sealing performance between the sealing ring 3 and the main body 1, a secondary body 6 is provided in the accommodating gap 5 and sleeved on the outer wall of the sealing ring 3. The secondary body 6 is made of annular rubber material, which can not only enhance the sealing between the sealing ring 3 and the main body 1, but also deform under pressure to fill the tiny gap between the sealing ring 3 and the main body 1.

[0028] In this embodiment, both main bodies 1 have annular chamfers 7 on their opposite sides to allow space for the deformation of the sub-body 6. After the sub-body 6 is deformed by pressure, its outward expansion can enter the chamfer 7 to prevent the sub-body 6 from being damaged by excessive pressure.

[0029] In this embodiment, the two edges of the chamfer 7 are rounded, and the outward expansion of the sub-body 6 can expand along the rounded edges, so that the sub-body 6 can expand outward smoothly, avoiding local stress concentration of the sub-body 6 due to sharp edges, and reducing the possibility of damage.

[0030] In this embodiment, the inner diameter of the sealing ring 3 is the same as the inner diameter of the inner edge 2, which facilitates the installation of the internal structure of the sealing ring.

[0031] In this embodiment, the helical spring 4 has a flat helical structure. The flat shape makes the spring less prone to lateral displacement or twisting when subjected to external force. Compared with ordinary cylindrical springs, the flat helical spring 4 has better stability in the radial direction.

[0032] Working principle: During the operation of the hydraulic system, high-pressure hydraulic oil flows through the pipeline. When the hydraulic oil reaches the sealing area, the two main bodies 1 are subjected to the pressure of the hydraulic oil, further compressing the helical spring 4. At the same time, the auxiliary body 6 also deforms under pressure, filling the tiny gap between the sealing ring 3 and the main body 1, thereby effectively preventing hydraulic oil leakage. If pressure fluctuations or vibrations occur in the hydraulic system during operation, the elastic deformation of the helical spring 4 and the auxiliary body 6 can play a buffering and regulating role, ensuring that the sealing ring always maintains good sealing performance and ensuring the normal operation of the hydraulic system.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0034] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A composite sealing ring, characterized in that: It includes a pair of main bodies (1), each of which has an annular inner edge (2) inside. A sealing ring (3) is provided between the two main bodies (1). The outer wall of the sealing ring (3) abuts against the inner cavity of the main body (1). A helical spring (4) is connected between the sealing ring (3) and the inner edge (2) so that a receiving gap (5) is formed between the two main bodies (1).

2. The combined sealing ring as described in claim 1, characterized in that: The accommodating gap (5) is provided with a sub-body (6) sleeved on the outer wall of the sealing ring (3).

3. A combined sealing ring as described in claim 2, characterized in that: Both main bodies (1) have annular chamfers (7) on their opposite sides to allow space for the deformation of the sub-body (6).

4. A combined sealing ring as described in claim 3, characterized in that: The two sides of the chamfer (7) are rounded.

5. A combined sealing ring as described in claim 1, characterized in that: The inner diameter of the sealing ring (3) is the same as the inner diameter of the inner edge (2).

6. A combined sealing ring as described in claim 2, characterized in that: The sub-body (6) is made of rubber.

7. A combined sealing ring as described in claim 1, characterized in that: The helical spring (4) has a flat helical structure.

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