High wear-resistant sealing ring

Abstract

The utility model provides a kind of high wear-resistant sealing ring, including rubber sealing ring body, its inside is equipped with first installation recess, outside is equipped with second installation recess;Spiral spring, is embedded in the first installation recess, for providing radial elastic support;First wear-resistant filling rubber ring and second wear-resistant filling rubber ring, respectively set in the outside and inside of the rubber sealing ring body;Wear-resistant rubber inner ring, with the second wear-resistant filling rubber ring closely adheres, its outside is equipped with a plurality of second wear-resistant filling slot;Wear-resistant rubber outer ring, with the first wear-resistant filling rubber ring closely adheres, its inside is equipped with a plurality of first wear-resistant filling slot.The utility model's synergistic effect makes sealing ring simultaneously have high wear resistance, self-adapting compensation capacity, excellent resilience and long-acting lubricating performance, especially suitable for harsh working conditions, such as high pressure, high speed or corrosive medium, greatly prolongs the service life of sealing ring and reduces maintenance cost.

Description

Technical Field

[0001] This utility model relates to a high wear-resistant sealing ring. Background Technology

[0002] As a common mechanical part, sealing rings are widely used in various industries. They are often used for dynamic sealing between shafts and holes, mainly to prevent liquid or gas leakage. The selection of sealing ring materials is of great significance to their sealing performance and service life, and the performance of the materials directly affects the performance of the sealing ring.

[0003] For example, the utility model patent "A Wear-Resistant Sealing Ring" (publication number: CN213393494U) achieves wear resistance through the coordinated use of the sealing ring body, groove, reinforcing ring, inner ring, protrusion, connecting ring, outer ring, and fixing ring. This solves the problem of the relatively simple structure and poor wear resistance of general sealing rings and can reduce the wear and deformation of the sealing ring during long-term use. However, in practice, this patent is prone to wear during reciprocating motion or rotational friction, leading to sealing failure. Especially under high pressure or high speed conditions, wear is aggravated, and the service life is significantly shortened. At the same time, it cannot automatically compensate for wear gaps, resulting in a decrease in sealing pressure and an increased risk of leakage. Utility Model Content

[0004] This invention provides a high wear-resistant sealing ring that can effectively solve the above-mentioned problems.

[0005] This utility model is implemented as follows:

[0006] A high wear-resistant sealing ring, comprising

[0007] The rubber sealing ring body has a first mounting groove on its inner side and a second mounting groove on its outer side.

[0008] A helical spring, embedded in the first mounting groove, is used to provide radial elastic support;

[0009] The first wear-resistant filled rubber ring and the second wear-resistant filled rubber ring are respectively disposed on the outer side and the inner side of the rubber sealing ring body;

[0010] The wear-resistant rubber inner ring is tightly fitted with the second wear-resistant filled rubber ring, and its outer side is provided with several second wear-resistant filled grooves;

[0011] The wear-resistant rubber outer ring is tightly fitted with the first wear-resistant filled rubber ring, and its inner side is provided with a number of first wear-resistant filled grooves;

[0012] A rubber composite layer is wrapped around the surface of the helical spring to form an elastic composite structure;

[0013] The pitted texture is evenly distributed on the contact surface of the wear-resistant inner ring and the wear-resistant outer ring, and is used to store the lubricating medium.

[0014] The beneficial effects of this utility model are:

[0015] (1) The high wear-resistant sealing ring provided by this utility model achieves excellent sealing performance and long service life through multiple innovative designs: the helical spring is embedded in the first mounting groove of the sealing ring body, providing continuous and stable radial elastic support force to ensure that the sealing ring and the contact surface always remain in close contact; the first and second wear-resistant filling rubber rings are respectively set on the inner and outer sides of the sealing ring, forming a double sealing barrier in close cooperation with the inner and outer wear-resistant rubber rings; the special filling notch design can guide the filling material to automatically compensate for the gap when worn, realizing the self-repair function; the rubber composite layer covering the spring protects the spring and enhances the overall elasticity; the surface pit texture effectively stores the lubricating medium and significantly reduces the coefficient of friction. These designs work together to give the sealing ring high wear resistance, self-adaptive compensation capability, excellent resilience and long-term lubrication performance, making it particularly suitable for harsh working conditions such as high pressure, high speed or corrosive media, greatly extending the service life of the sealing ring and reducing maintenance costs. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is the front view of this utility model.

[0018] Explanation of icon numbers:

[0019] 10. Rubber sealing ring body; 20. First mounting groove; 30. Helical spring; 40. First wear-resistant filled rubber ring; 50. Second wear-resistant filled rubber ring; 60. Wear-resistant rubber inner ring; 70. Wear-resistant rubber outer ring; 80. First wear-resistant filled notch; 90. Second wear-resistant filled notch; 100. Second mounting groove; 110. Rubber composite layer; 120. Pits and textures. Detailed Implementation

[0020] 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, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to represent selected embodiments of this utility model.

[0021] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0022] Reference Figure 1 As shown, a high wear-resistant sealing ring includes...

[0023] The rubber sealing ring body 10 has a first mounting groove 20 on its inner side and a second mounting groove 100 on its outer side. An "S"-shaped outer elastic rubber sheet is located inside the second mounting groove 100, with its free end connected to the first wear-resistant filling rubber ring 40. The double-groove design provides bidirectional elastic support for both the inner and outer diameters, ensuring a balanced distribution of sealing pressure. The "S"-shaped outer elastic rubber sheet can freely expand and contract, adapting to dynamic deformation and assisting in the repositioning of the sealing ring.

[0024] A helical spring 30 is embedded in the first mounting groove 20 to provide radial elastic support. The cross-section of the helical spring 30 is "S"-shaped or helical, and its two ends are fixedly connected to the rubber sealing ring body 10 through a vulcanization process. Among them, the "S"-shaped spring provides non-linear elastic force, and the stiffness increases under high pressure to avoid excessive compression. Vulcanization fixation prevents spring displacement and ensures long-term stability.

[0025] The first wear-resistant filled rubber ring 40 and the second wear-resistant filled rubber ring 50 are respectively disposed on the outer and inner sides of the rubber sealing ring body 10; the first wear-resistant filled rubber ring 40 and the second wear-resistant filled rubber ring 50 are doped with hollow glass microspheres or elastic microspheres. Among them, the microspheres release lubricant (such as silicone oil) when they are compressed and rupture, thus achieving self-lubrication. Furthermore, the microsphere structure absorbs vibration energy and reduces noise.

[0026] The wear-resistant rubber inner ring 60 is tightly fitted with the second wear-resistant filled rubber ring 50, and its outer side is provided with several second wear-resistant filled grooves 90; the wear-resistant rubber outer ring 70 is tightly fitted with the first wear-resistant filled rubber ring 40, and its inner side is provided with several first wear-resistant filled grooves 80; the cross-sections of the first wear-resistant filled grooves 80 and the second wear-resistant filled grooves 90 are trapezoidal or semi-circular, with a depth of 0.5-2 mm, and are evenly distributed circumferentially. The grooves provide channels for the thermoplastic elastomer filling, allowing material flow to repair cracks during wear, while the trapezoidal cross-section prevents stress concentration and evenly distributes pressure compensation.

[0027] The inner wear-resistant rubber ring 60 and the outer wear-resistant rubber ring 70 are made of polyurethane rubber or fluororubber.

[0028] A thermoplastic elastomer is pre-filled between the wear-resistant inner rubber ring 60 and the second wear-resistant filler rubber ring 50 for self-repair filling after wear.

[0029] A rubber composite layer 110 is wrapped around the surface of the helical spring 30 to form an elastic composite structure; the rubber composite layer 110 is made of thermoplastic polyester elastomer or hydrogenated nitrile rubber, and has a thickness of 0.3 to 1 mm.

[0030] The pit texture 120 is evenly distributed on the contact surface of the wear-resistant rubber inner ring 60 and the wear-resistant rubber outer ring 70, and is used to store the lubricating medium. The pit texture 120 is a micron-sized pit formed by laser engraving. Among them, the pits store the lubricating oil film, reducing the coefficient of friction by more than 30%. At the same time, the micron-sized texture avoids particle embedding and reduces wear.

[0031] A wear-resistant sealing ring, wherein the sealing ring is a one-piece molded structure and is prepared by multi-material injection molding or compression molding process.

[0032] Working principle: After the sealing ring is installed, the helical spring 30 provides continuous radial elastic force through its "S"-shaped or spiral structure, pushing the second wear-resistant filled rubber ring 50 to press the wear-resistant inner rubber ring 60 tightly against the shaft surface; at the same time, the "S"-shaped outer elastic rubber sheet presses the first wear-resistant filled rubber ring 40 against the wear-resistant outer rubber ring 70 to achieve outer diameter sealing. During the friction process, the filled rubber rings 40 and 50, which contain hollow glass microspheres, absorb vibration energy through the deformation of the microspheres, while the pit texture 120 on the surface of the wear-resistant inner / outer rubber rings 60 and 70 stores lubricating medium to reduce the coefficient of friction. When wear occurs, the pre-filled thermoplastic elastomer melts and flows under the action of frictional heat, automatically filling the worn parts through the first / second wear-resistant filled grooves 80 and 90. At the same time, the rubber composite layer 110 maintains the elastic restoring force of the helical spring 30, thereby achieving dynamic self-repair and long-term sealing.

[0033] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A high wear-resistant sealing ring, characterized in that, include The rubber sealing ring body (10) has a first mounting groove (20) on its inner side and a second mounting groove (100) on its outer side; A helical spring (30) is embedded in the first mounting groove (20) to provide radial elastic support; The first wear-resistant filled rubber ring (40) and the second wear-resistant filled rubber ring (50) are respectively disposed on the outer side and the inner side of the rubber sealing ring body (10); The wear-resistant rubber inner ring (60) is tightly fitted with the second wear-resistant filled rubber ring (50), and its outer side is provided with several second wear-resistant filled grooves (90); The wear-resistant rubber outer ring (70) is tightly fitted with the first wear-resistant filled rubber ring (40), and its inner side is provided with a plurality of first wear-resistant filled grooves (80); A rubber composite layer (110) is wrapped around the surface of the helical spring (30) to form an elastic composite structure; The pitted texture (120) is evenly distributed on the contact surface of the wear-resistant rubber inner ring (60) and the wear-resistant rubber outer ring (70) for storing the lubricating medium.

2. The high wear-resistant sealing ring according to claim 1, characterized in that, The cross-section of the helical spring (30) is "S" shaped or helical, and its two ends are fixedly connected to the rubber sealing ring body (10) through a vulcanization process.

3. The high wear-resistant sealing ring according to claim 1, characterized in that, The first wear-resistant filling groove (80) and the second wear-resistant filling groove (90) have trapezoidal or semi-circular cross sections and a depth of 0.5 to 2 mm, and are evenly distributed along the circumference.

4. The high wear-resistant sealing ring according to claim 1, characterized in that, The rubber composite layer (110) is made of thermoplastic polyester elastomer or hydrogenated nitrile rubber, with a thickness of 0.3 to 1 mm.

5. A high wear-resistant sealing ring according to claim 1, characterized in that, The pit texture (120) is a micron-sized pit formed by laser engraving.

6. The high wear-resistant sealing ring according to claim 1, characterized in that, The wear-resistant rubber inner ring (60) and the wear-resistant rubber outer ring (70) are made of polyurethane rubber or fluororubber.

7. A high wear-resistant sealing ring according to claim 1, characterized in that, The first wear-resistant filled rubber ring (40) and the second wear-resistant filled rubber ring (50) are mixed with hollow glass microspheres or elastic microspheres.

8. A high wear-resistant sealing ring according to claim 1, characterized in that, The second mounting groove (100) has an "S"-shaped external elastic rubber sheet inside, and its free end is connected to the first wear-resistant filling rubber ring (40).

9. A high wear-resistant sealing ring according to claim 1, characterized in that, The wear-resistant rubber inner ring (60) and the second wear-resistant filled rubber ring (50) are pre-filled with thermoplastic elastomer for self-repair filling after wear.

10. A wear-resistant sealing ring according to any one of claims 1-9, characterized in that: The sealing ring is a one-piece molded structure, prepared by multi-material injection molding or compression molding processes.

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