Static sealing ring capable of achieving expansion cylinder sealing

Abstract

The utility model relates to the technical field of sealing rings, and discloses a static sealing ring capable of realizing expansion cylinder sealing, a sealing ring is assembled in a gap formed between a base cover and a base body, the static sealing ring comprises a first sealing lip and a second sealing lip, the first sealing lip and the second sealing lip are arranged at the top and the bottom of the sealing ring, and the first sealing lip and the second sealing lip are integrally designed with the sealing ring; the elastic sealing rings are arranged on the left side and the right side of the sealing ring, and the elastic sealing rings and the sealing ring are integrally designed; the turning position of the second reinforcing rib is arranged in the sealing ring, and the extending position of the second reinforcing rib is inserted into the first sealing lip and the second sealing lip in a penetrating mode. The first reinforcing rib is arranged on the inner wall of the elastic sealing ring. According to the sealing ring, higher sealing performance is provided, sealing performance reduction caused by friction in long-term use is effectively avoided through the friction self-compensation effect, the service life of the sealing ring is prolonged, and the reliability of the sealing ring is improved.

Description

Technical Field

[0001] This utility model relates to the field of sealing ring technology, and in particular to a static sealing ring that can achieve cylinder expansion sealing. Background Technology

[0002] Static seals are sealing elements commonly used in hydraulic and pneumatic systems, primarily to prevent fluid or gas leakage between static components. They form a sealing barrier through tight contact with mating surfaces, ensuring the system's sealing performance. Under certain high-pressure, dynamic operating conditions, sealing performance is easily affected by temperature changes, pressure fluctuations, or equipment deformation, and traditional static seals may not maintain a stable sealing effect over the long term. To address these challenges, static seals capable of expanding cylinder sealing are essential. These seals feature innovative design structures, such as double-lip seals, elastic recovery mechanisms, and reinforcing ribs, enabling them to adapt to pressure and temperature changes during operation, ensuring long-term stable sealing performance. Furthermore, the use of elastic fillers and special materials enhances extrusion resistance and wear resistance, ensuring the seals continue to operate efficiently under high pressure, dynamic, and harsh environments, preventing leakage and extending equipment lifespan.

[0003] Traditional static seals are typically installed on the contact surface between the base cap and the base to prevent fluid or gas leakage. Their working principle relies on the tight contact between the seal and the base cap and base. When the system is operating, pressure changes or temperature fluctuations between the base cap and base cause the seal to elastically deform, thus providing an effective sealing barrier. The seal forms a sealing layer through compression and friction with the mating surfaces, preventing media leakage to the external environment. The seal's design allows it to adapt to changes in the system during operation, such as temperature variations or dynamic loads, ensuring long-term stable sealing performance. A common installation method is to fix the seal in the mounting groove of the base cap, ensuring that the pressure is evenly distributed during compression, avoiding failure due to localized excessive compression or deformation.

[0004] Traditional static seals typically employ a simple structural design, relying on the elasticity of the material to achieve a seal. However, the elastic modulus and deformation capacity of the material are limited. When the compression is too great, the seal is difficult to return to its original shape, leading to seal failure and making it difficult to maintain a long-term sealing effect. Utility Model Content

[0005] To overcome the above shortcomings, this invention provides a static sealing ring that can achieve cylinder expansion sealing, aiming to improve the limitations of traditional static sealing rings in terms of elastic modulus and deformation capacity. When the compression is too large, the sealing ring is difficult to return to its original shape, leading to sealing failure, and it is also difficult to maintain a long-term sealing effect.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a static sealing ring capable of achieving cylinder expansion sealing, wherein the sealing ring is assembled into the gap formed between the base cover and the base body, comprising:

[0007] Sealing lip one and sealing lip two are disposed at the top and bottom of the sealing ring, and are integrally designed with the sealing ring;

[0008] The elastic sealing ring is disposed on the left and right sides of the sealing ring and is integrally designed with the sealing ring.

[0009] The second reinforcing rib has its turning point located inside the sealing ring, and its extension is inserted inside the first and second sealing lips.

[0010] The first reinforcing rib and the elastic filler are disposed on the inner wall of the elastic sealing ring and between the sealing ring and the first reinforcing rib, respectively, to improve the reset effect of the elastic sealing ring.

[0011] Furthermore, a V-shaped groove is formed between the first sealing lip and the second sealing lip at the top and bottom of the sealing ring to provide space for the contraction of the first sealing lip.

[0012] Furthermore, the sealing lip one, sealing lip two, and elastic sealing ring are all made of polyurethane material to adapt to compression deformation and dynamic working conditions.

[0013] Furthermore, the elastic filler is made of glass fiber to enhance its resistance to extrusion.

[0014] Furthermore, the first sealing lip is attached to the outer wall of the base cover, and the second sealing lip is attached to the outer wall of the base.

[0015] Furthermore, the elastic sealing rings on the left and right sides of the sealing ring are respectively attached to the outer walls of the base cover and the base body.

[0016] Furthermore, the sealing lip one, sealing lip two, and elastic sealing ring are all deformed by the compression of the base cover and the substrate, which is used to improve the fit.

[0017] This utility model has the following beneficial effects:

[0018] 1. In this invention, the sealing ring forms a tight contact with the base cover and the substrate, ensuring an initial sealing effect. Then, the first and second sealing lips can elastically deform under pressure changes and temperature fluctuations, increasing the contact force with the base cover and the substrate, ensuring continuous and stable sealing performance. This not only provides higher sealing performance but also effectively avoids the decline in sealing performance due to friction during long-term use through friction self-compensation, thus improving the service life and reliability of the sealing ring.

[0019] 2. In this utility model, by placing the second reinforcing rib inside the sealing ring and interlacing it between the first and second sealing lips, additional support is provided to prevent the sealing ring from deforming or being squeezed out under high pressure. In addition, the elastic filler is made of glass fiber material, which not only enhances the rigidity of the sealing ring but also improves its extrusion resistance, preventing the sealing ring from failing due to excessive pressure under extreme working conditions, ensuring the stability of the seal and extending the service life of the sealing ring. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of a static sealing ring that can achieve cylinder expansion sealing according to the present invention.

[0021] Figure 2 This is a schematic diagram of a sealing ring structure for a static sealing ring that can achieve cylinder expansion sealing, as proposed in this utility model.

[0022] Figure 3 This utility model provides an assembly diagram of a sealing ring for a static sealing ring that can achieve cylinder expansion sealing.

[0023] Figure 4 This is a schematic diagram of the internal structure of a static sealing ring that can achieve cylinder expansion sealing, as proposed in this utility model.

[0024] Legend:

[0025] 1. Sealing ring; 2. Base cap; 3. Base body; 4. Elastic sealing ring; 5. Reinforcing rib one; 6. Elastic filler; 7. Reinforcing rib two; 8. Sealing lip one; 801. Sealing lip two; 9. V-groove. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Reference Figure 1 - Figure 4 One embodiment of this utility model provides: a static sealing ring capable of achieving cylinder expansion sealing, wherein the sealing ring 1 is assembled into the gap formed between the base cover 2 and the base body 3, comprising:

[0028] Sealing lip 1 8 and sealing lip 2 801 are provided at the top and bottom of sealing ring 1 and are integrated with sealing ring 1.

[0029] The elastic sealing ring 4 is disposed on the left and right sides of the sealing ring 1 and is integrated with the sealing ring 1.

[0030] The second reinforcing rib 7 has its turning point inside the sealing ring 1, and its extension is inserted inside the sealing lip 8 and the second sealing lip 801.

[0031] The reinforcing rib 1 5 and the elastic filler 6 are arranged on the inner wall of the elastic sealing ring 4 and between the sealing ring 1 and the reinforcing rib 1 5 to improve the reset effect of the elastic sealing ring 4. The sealing lip 1 8 and the sealing lip 2 801 form a V-shaped groove 9 at the top and bottom of the sealing ring 1 to provide space for the shrinkage of the sealing lip 1 8. The sealing lip 1 8, the sealing lip 2 801 and the elastic sealing ring 4 are all made of polyurethane to adapt to compression deformation and dynamic working conditions. The elastic filler 6 is made of glass fiber to enhance its extrusion resistance. The sealing lip 1 8 is attached to the outer wall of the base cover 2 and the sealing lip 2 801 is attached to the outer wall of the base 3. The elastic sealing rings 4 on the left and right sides of the sealing ring 1 are attached to the outer walls of the base cover 2 and the base 3 respectively. The sealing lip 1 8, the sealing lip 2 801 and the elastic sealing ring 4 are deformed by the compression of the base cover 2 and the base 3 to improve the fit.

[0032] Specifically, firstly, sealing lip 8 and sealing lip 801 are located at the top and bottom of sealing ring 1, respectively, contacting the outer walls of base cap 2 and base body 3 to form a preliminary seal. The V-shaped groove 9 between sealing lip 8 and sealing lip 801 is designed to provide shrinkage space, allowing the sealing lips to flexibly adapt to deformation under pressure changes or temperature fluctuations, thereby enhancing the sealing effect. As the pressure between base cap 2 and base body 3 changes, sealing lip 8 and sealing lip 801 undergo elastic deformation, increasing the contact force with the mating surfaces, thereby improving the sealing performance and preventing fluid or gas leakage. At the same time, elastic sealing rings 4 are set on the left and right sides of sealing ring 1, contacting the outer walls of base cap 2 and base body 3 respectively, forming a second sealing barrier. The elastic sealing rings 4, through their good elastic recovery characteristics, adapt to pressure changes. The elastic sealing ring 4 can adapt to deformation and maintain close contact with the base cover 2 and the base body 3, ensuring stable sealing performance. Under high pressure, the elastic sealing ring 4 can return to its original shape, maintain effective sealing, and prevent leakage. In addition, the reinforcing rib 2 7 is located inside the sealing ring 1, extending and intersecting between the sealing lip 1 8 and the sealing lip 2 801, providing additional structural support and increasing the strength and rigidity of the sealing ring 1. This can prevent the elastic sealing ring 4 from deforming or being extruded under high pressure. The cooperation between the reinforcing rib 1 5 and the elastic filler 6 further enhances the reset effect of the sealing ring. The elastic filler 6 is made of glass fiber material, which significantly improves the extrusion resistance of the sealing ring and can effectively prevent the sealing ring from being compressed or deformed under high pressure working conditions, thereby maintaining long-term sealing performance and improving service life.

[0033] Working principle: When a static sealing ring capable of achieving cylinder expansion sealing is required, sealing lip 1 (8) and sealing lip 2 (801) first contact the outer walls of the base cover 2 and the base body 3 to form a preliminary seal. The V-groove 9 provides space for its contraction, ensuring that sealing lip 1 (8) and sealing lip 2 (801) can effectively adapt to deformation under pressure changes or temperature fluctuations, further enhancing the sealing effect. When the pressure between the base cover 2 and the base body 3 changes, sealing lip 1 (8) and sealing lip 2 (801) will deform with the pressure change, producing elastic deformation to increase the contact force with the mating surface, thereby improving the sealing performance and preventing leakage. The elastic sealing ring 4 is set on the left and right sides of the sealing ring 1, contacting the outer walls of the base cover 2 and the base body 3 to form a second sealing barrier. Its elastic characteristics enable it to adapt to pressure changes. The elastic sealing ring 4 undergoes corresponding deformation to maintain close contact with the base cover 2 and the base body 3, ensuring stable sealing performance. Under high pressure, the elastic sealing ring 4 maintains a good sealing effect by restoring its original shape, preventing fluid or gas leakage. The reinforcing rib 7 is located inside the sealing ring 1, extending and intersecting between the sealing lip 1 8 and the sealing lip 2 801, and providing additional structural support. This not only increases the strength and rigidity of the seal, but also prevents the sealing ring from deforming or being extruded under high pressure. The cooperation between the reinforcing rib 1 5 and the elastic filler 6 further enhances the reset effect of the sealing ring. The elastic filler 6 is made of glass fiber, which can significantly improve the sealing ring's resistance to extrusion, preventing the sealing ring from being compressed or deformed under high pressure, thereby improving the stability of the sealing performance and service life.

[0034] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., 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. A static sealing ring capable of achieving cylinder expansion sealing, characterized in that: The sealing ring (1) is assembled into the gap formed between the base cover (2) and the base body (3), including: Sealing lip one (8) and sealing lip two (801) are provided at the top and bottom of the sealing ring (1) and are integrated into the sealing ring (1); Elastic sealing ring (4), the elastic sealing ring (4) is disposed on the left and right sides of the sealing ring (1) and is integrated with the sealing ring (1); The second reinforcing rib (7) is located inside the sealing ring (1) at the turning point, and its extension is inserted inside the sealing lip (8) and the sealing lip (801). The reinforcing rib (5) and the elastic filler (6) are provided on the inner wall of the elastic sealing ring (4) and the elastic filler (6) are provided between the sealing ring (1) and the reinforcing rib (5) to improve the reset effect of the elastic sealing ring (4).

2. The static sealing ring capable of achieving cylinder expansion sealing according to claim 1, characterized in that: A V-shaped groove (9) is formed between the sealing lip one (8) and the sealing lip two (801) at the top and bottom of the sealing ring (1) to provide space for the contraction of the sealing lip one (8).

3. A static sealing ring capable of achieving cylinder expansion sealing according to claim 1, characterized in that: The sealing lip one (8), sealing lip two (801) and elastic sealing ring (4) are all made of polyurethane material to adapt to compression deformation and dynamic working conditions.

4. A static sealing ring capable of achieving cylinder expansion sealing according to claim 1, characterized in that: The elastic filler (6) is made of glass fiber to enhance its resistance to extrusion.

5. A static sealing ring capable of achieving cylinder expansion sealing according to claim 1, characterized in that: The sealing lip one (8) is attached to the outer wall of the base cover (2), and the sealing lip two (801) is attached to the outer wall of the base (3).

6. A static sealing ring capable of achieving cylinder expansion sealing according to claim 1, characterized in that: The elastic sealing rings (4) on the left and right sides of the sealing ring (1) are respectively attached to the outer walls of the base cover (2) and the base body (3).

7. A static sealing ring capable of achieving cylinder expansion sealing according to claim 1, characterized in that: The sealing lip one (8), sealing lip two (801) and elastic sealing ring (4) are deformed by the compression of the base cover (2) and the base body (3) to improve the fit.

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