High-temperature-resistant rubber sealing ring

Abstract

The utility model relates to the technical field of sealing rings, and provides a high-temperature-resistant rubber sealing ring which comprises a first sealing ring body, a square groove is formed in the inner side of the first sealing ring body, a first connecting ring is arranged on the inner side of the first sealing ring body, and a second sealing ring body is movably connected to the inner side of the first connecting ring. A rubber block is fixedly connected to the side face of the second sealing ring, a second connecting ring is arranged on the inner side of the second sealing ring, a third sealing ring is movably connected to the inner side of the second connecting ring, and a circular ring is arranged on the inner side of the third sealing ring. According to the technical scheme, a simple structure is formed among the first sealing ring, the second sealing ring and the third sealing ring, so that the problems that the production efficiency is reduced and the manufacturing cost is relatively high due to the fact that the replaceability and maintainability of the sealing ring are relatively high and the structure is relatively complex are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing rings, and in particular to a high-temperature resistant rubber sealing ring. Background Art

[0002] In high temperature environments, traditional rubber seals tend to lose elasticity, harden or deform, resulting in poor sealing effects or even complete failure. High temperatures can cause rubber materials to harden, deform, and react with chemical media, thus affecting sealing performance. To solve this problem, researchers are looking for new rubber sealing materials, such as silicone rubber and polymer composites, to improve the high temperature resistance and chemical stability of the seals, ensuring the reliability and safety of the system under high temperature conditions.

[0003] The patent specification with announcement number CN215172234U discloses a high temperature resistant rubber sealing ring, including a sealing ring body, wherein a sealing assembly is installed on the inner wall of the sealing ring body, wherein the sealing assembly includes a first sealing rubber sheet integrally formed with the inner wall of the sealing ring body, wherein two first sealing rubber sheets are provided and symmetrically arranged. In the above manner, the utility model fixes two first sealing rubber sheets on the inner wall of the sealing ring body, and during use, the sealing ring body cooperates with the side wall of the shaft and fully presses against the two first sealing rubber sheets, so that the sealing between the inner wall of the sealing ring body and the side wall of the shaft is fully filled, thereby enhancing the sealing effect of the sealing ring body.

[0004] However, in the implementation of relevant technologies, it was found that the above-mentioned high-temperature resistant rubber sealing ring has the following problems: the sealing ring may have a high degree of replacement and maintenance and a relatively complex structure, which leads to reduced production efficiency and high manufacturing costs. Utility Model Content

[0005] The utility model provides a high temperature resistant rubber sealing ring, which solves the problem of reduced production efficiency and high manufacturing cost due to the high replacement and maintenance requirements of the sealing ring and the possibly complex structure of the sealing ring.

[0006] The technical solution of the utility model is as follows:

[0007] A high temperature resistant rubber sealing ring comprises a first sealing ring, a first connecting ring is arranged on the inner side of the first sealing ring, a second sealing ring is movably connected to the inner side of the first connecting ring, a second connecting ring is arranged on the inner side of the second sealing ring, a third sealing ring is movably connected to the inner side of the second connecting ring, and a circular ring is arranged on the inner side of the third sealing ring.

[0008] Preferably, a rubber block is fixedly connected to the side surface of the second sealing ring, a square groove is provided on the inner side of the first sealing ring, and the rubber block and the square groove form a sliding connection.

[0009] Preferably, an annular groove is formed on the inner side of the first sealing ring, and a second engaging groove is formed on the outer side of the second sealing ring. The shape formed by the annular groove and the second engaging groove is the same as the shape of the first connecting ring.

[0010] Preferably, the inner side of the circular ring is in an arc shape, and the third sealing ring is always on the same horizontal line as the second sealing ring and the first sealing ring.

[0011] Preferably, a first engaging groove is formed on the outer side of the third sealing ring, and the first engaging groove, the inner side of the second sealing ring and the second connecting ring form an engaging structure.

[0012] Preferably, the thickness of the first connecting ring is half of the thickness of the first sealing ring, and the material of the first connecting ring is silicone rubber.

[0013] Preferably, the maximum diameter of the first sealing ring is greater than the maximum diameter of the second sealing ring, and the first sealing ring and the second sealing ring are made of the same material, that is, fluororubber.

[0014] Preferably, the maximum diameter of the third sealing ring is the same as the minimum inner diameter of the second sealing ring, and the material of the third sealing ring is nitrile rubber.

[0015] The working principle and beneficial effects of the utility model are:

[0016] 1. In the utility model, a simple structure is formed between the first sealing ring, the second sealing ring and the third sealing ring, so that the production cost can be reduced, which means less materials and processing steps, thereby reducing the manufacturing cost. For equipment that requires regular maintenance or replacement of seals, downtime can be reduced and production efficiency can be improved. At the same time, it means fewer potential failure points, thereby improving the reliability and stability of the sealing system. Maintenance personnel can perform maintenance work more quickly, thereby reducing the time and labor costs required for maintenance.

[0017] 2. In the utility model, the sealing performance of the sealing ring can be increased through the multi-layer design of the first sealing ring, the second sealing ring and the third sealing ring, and the contact area between the sealing ring and the sealing surface can be increased, thereby improving the sealing effect and reducing the risk of liquid or gas leakage. The high temperature resistance of the sealing ring can be increased so that it can maintain good elasticity and sealing performance at higher temperatures. At the same time, the redundant parts can be installed or removed according to actual usage requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0019] Figure 1 This is a schematic diagram of the cross-sectional structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the inner sealing ring structure proposed by the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the outer sealing ring proposed by the utility model;

[0022] Figure 4 It is a schematic diagram of the overall structure proposed by the utility model;

[0023] Figure 5 This is a schematic diagram of the external structure proposed by the utility model.

[0024] In the figure: 1. first sealing ring; 2. first connecting ring; 3. second sealing ring; 4. second connecting ring; 5. third sealing ring; 6. circular ring; 7. rubber block; 8. square groove; 9. annular groove; 10. first engaging groove; 11. second engaging groove. DETAILED DESCRIPTION

[0025] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example 1

[0026] like Figure 1 , Figure 2 As shown, it includes a first sealing ring 1, a first connecting ring 2 is arranged on the inner side of the first sealing ring 1, a second sealing ring 3 is movably connected to the inner side of the first connecting ring 2, a second connecting ring 4 is arranged on the inner side of the second sealing ring 3, a third sealing ring 5 is movably connected to the inner side of the second connecting ring 4, a circular ring 6 is arranged on the inner side of the third sealing ring 5, and the surface of the second connecting ring 4 is provided with anti-slip grooves.

[0027] In this embodiment, a rubber block 7 is fixedly connected to the side of the second sealing ring 3, and a square groove 8 is opened on the inner side of the first sealing ring 1. The rubber block 7 and the square groove 8 form a sliding connection. Four rubber blocks 7 are distributed at equal angles on the side of the second sealing ring 3. The surface of the rubber block 7 is rough and has a large friction force.

[0028] In this embodiment, an annular groove 9 is provided on the inner side of the first sealing ring 1, and a second engaging groove 11 is provided on the outer side of the second sealing ring 3. The shape formed by the annular groove 9 and the second engaging groove 11 is the same as the shape of the first connecting ring 2, and the annular groove 9 and the second engaging groove 11 constitute an engaging structure.

[0029] In this embodiment, the inner side of the circular ring 6 is in an arc shape, and the third sealing ring 5, the second sealing ring 3 and the first sealing ring 1 are always on the same horizontal line. The shape of the circular ring 6 can increase the fit. Example 2

[0030] like Figure 3~Figure 5 As shown, based on the same concept as the above-mentioned embodiment 1, this embodiment also proposes

[0031] In this embodiment, a first engaging groove 10 is formed on the outer side of the third sealing ring 5 , and the first engaging groove 10 and the inner side of the second sealing ring 3 and the second connecting ring 4 form an engaging structure, and one side of the second connecting ring 4 fits with the first engaging groove 10 .

[0032] In this embodiment, the thickness of the first connecting ring 2 is half the thickness of the first sealing ring 1. The material of the first connecting ring 2 is silicone rubber, which has excellent high temperature resistance, good oxidation resistance, ozone resistance and UV resistance, and is suitable for sealing applications in various high temperature environments.

[0033] In this embodiment, the maximum diameter of the first sealing ring 1 is greater than the maximum diameter of the second sealing ring 3. The first sealing ring 1 and the second sealing ring 3 are made of the same material. The material of the first sealing ring 1 and the second sealing ring 3 is fluororubber, which has excellent high temperature resistance and chemical resistance, and has good tolerance and is suitable for harsh chemical environments.

[0034] In this embodiment, the maximum diameter of the third sealing ring 5 is the same as the minimum inner side of the second sealing ring 3. The third sealing ring 5 is made of nitrile rubber, which has high temperature resistance, good oil resistance and wear resistance, and is suitable for sealing applications in some industrial equipment and automobile engines.

[0035] Working principle: When using the device, according to the use requirements, the third sealing ring 5 is inserted into the workpiece to be sealed, and the outer side of the workpiece can be further fitted through the circular ring 6. According to the actual situation, the second sealing ring 3 on the outside can be detached, and the first engaging groove 10 on the outside of the third sealing ring 5 is disengaged from the second connecting ring 4, and the second sealing ring 3 is removed. If there is no need to remove the second sealing ring 3, the first sealing ring 1 can be removed. The first sealing ring 1 can be detached by sliding the rubber block 7 in the square groove 8 on the inner side of the first sealing ring 1, and the first connecting ring 2 is disengaged from the connection state between the annular groove 9 and the second engaging groove 11. If there are specific requirements for the sealing effect, the first sealing ring 1, the second sealing ring 3 and the third sealing ring 5 can cooperate to provide a better sealing effect, and the simple structure makes it easy to replace or maintain.

[0036] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high temperature resistant rubber sealing ring, comprising a first sealing ring (1), characterized in that: A first connecting ring (2) is arranged on the inner side of the first sealing ring (1), a second sealing ring (3) is movably connected to the inner side of the first connecting ring (2), a second connecting ring (4) is arranged on the inner side of the second sealing ring (3), a third sealing ring (5) is movably connected to the inner side of the second connecting ring (4), and a circular ring (6) is arranged on the inner side of the third sealing ring (5).

2. A high temperature resistant rubber sealing ring according to claim 1, characterized in that: A rubber block (7) is fixedly connected to the side surface of the second sealing ring (3), a square groove (8) is provided on the inner side of the first sealing ring (1), and the rubber block (7) and the square groove (8) form a sliding connection.

3. A high temperature resistant rubber sealing ring according to claim 1, characterized in that: An annular groove (9) is formed on the inner side of the first sealing ring (1), and a second engaging groove (11) is formed on the outer side of the second sealing ring (3); the shape formed by the annular groove (9) and the second engaging groove (11) is the same as the shape of the first connecting ring (2).

4. A high temperature resistant rubber sealing ring according to claim 1, characterized in that: The inner side of the circular ring (6) is in an arc shape, and the third sealing ring (5), the second sealing ring (3) and the first sealing ring (1) are always on the same horizontal line.

5. A high temperature resistant rubber sealing ring according to claim 1, characterized in that: A first engaging groove (10) is provided on the outer side of the third sealing ring (5), and the first engaging groove (10) and the inner side of the second sealing ring (3) and the second connecting ring (4) form an engaging structure.

6. A high temperature resistant rubber sealing ring according to claim 1, characterized in that: The thickness of the first connecting ring (2) is half the thickness of the first sealing ring (1), and the material of the first connecting ring (2) is silicone rubber.

7. A high temperature resistant rubber sealing ring according to claim 1, characterized in that: The maximum diameter of the first sealing ring (1) is greater than the maximum diameter of the second sealing ring (3); the first sealing ring (1) and the second sealing ring (3) are made of the same material, namely fluororubber.

8. A high temperature resistant rubber sealing ring according to claim 1, characterized in that: The maximum diameter of the third sealing ring (5) is the same as the minimum inner diameter of the second sealing ring (3), and the material of the third sealing ring (5) is nitrile rubber.

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