High-wear-resistance composite rubber o-ring

Abstract

The utility model discloses a kind of high wear-resistant composite rubber O-shaped rings, including sealing ring, the outer wall of sealing ring is provided with several sawtooth strips, and groove is provided between sawtooth strip;The two sides of sealing ring are provided with wear surface, and the side of wear surface is provided with wear rib, and wear rib is connected with sealing ring by wear surface;Sealing ring inner wall is provided with texture ridge, and recess is provided between texture ridge.The utility model is through outer wall spiral sawtooth strip and groove structure, by reducing actual contact area, guiding fluid distribution, the friction coefficient of sealing ring and sealing surface can be reduced, while the groove bottom of arc transition avoids stress concentration, improves structural durability;Inner wall staggered distribution texture ridge and groove, cooperate outer wall structure to form three-dimensional wear-resistant network, effectively disperses wear under bidirectional friction condition, the oil micropore structure of groove bottom, can prestore lubricating medium when assembling, dynamic release with pressure change in working process, form sustained lubricating film.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of sealing ring, concretely relates to a high wear -resisting composite rubber O type ring. BACKGROUND

[0002] In many industrial fields such as machinery, chemical industry, automobile, O type ring is widely used as a common sealing element with the advantages of simple structure, convenient installation and reliable sealing. In the working process, O type ring needs to be closely attached to the sealing surface, and relative movement occurs between the two during equipment operation. The friction generated thereby will continuously act on the surface of O type ring, and at the same time, the particle impurities, high temperature and high pressure in the sealing environment will also aggravate the wear of the surface of O type ring, resulting in the wear of O type ring.

[0003] However, the existing rubber O type ring has obvious deficiencies in wear resistance. Most products only use basic surface texture design, such as simple straight grooves or grid structure, which has limited effect on reducing friction and dispersing pressure. Only the wear resistance of single part is treated, the overall structure is not systematically optimized, and the lubricating medium storage and surface roughness are not effectively combined. Therefore, it is urgent to design a high wear-resistant composite rubber O type ring to solve the above problems. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing a high wear-resistant composite rubber O type ring to solve the above deficiencies in the prior art.

[0005] In order to achieve the above purpose, the utility model provides the following technical scheme: A high wear-resistant composite rubber O type ring, comprising a sealing ring, a plurality of sawtooth strips are arranged on the outer wall of the sealing ring, and grooves are arranged between the sawtooth strips. Both sides of the sealing ring are provided with wear-resistant surfaces, one side of the wear-resistant surface is provided with wear-resistant ribs, and the wear-resistant ribs are connected with the sealing ring through the wear-resistant surface. The inner wall of the sealing ring is provided with texture ridges, and grooves are arranged between the texture ridges.

[0006] Preferably, the sawtooth strips are continuously distributed in a spiral shape along the outer wall of the sealing ring, the groove depth between adjacent sawtooth strips is 0.2-0.5mm, the width is 0.3-0.6mm, and the groove bottom is arc-shaped transition.

[0007] Preferably, the wear-resistant rib is a continuous strip-shaped protrusion with a cylindrical cross section, the height is 0.1-0.3mm, the width is 0.5-1.0mm, and the wear-resistant rib is arranged in a ring array along the edge of the wear-resistant surface.

[0008] Preferably, the wear-resistant surface is subjected to sand blasting to form a micron-level rough structure with a roughness Ra value of 3.2-6.3 μm, and the wear-resistant surface has a thickness of 10%-15% of the sealing ring wall thickness.

[0009] Preferably, the groove bottom is provided with oil storage micro-holes with a diameter of 0.1-0.3 mm, a depth of 0.05-0.1 mm, and a density of 10-30 per square centimeter.

[0010] Preferably, the texture ridges on the inner wall of the sealing ring are distributed in a staggered manner with the sawtooth strips on the outer wall in axial projection, and the staggered distance is 1 / 3-1 / 2 of the width of the sawtooth strips.

[0011] In the above technical solution, the high-wear-resistance composite rubber O-shaped ring has the following beneficial effects: (1) The spiral sawtooth strips and the groove structure on the outer wall reduce the actual contact area and guide fluid distribution, thereby reducing the friction coefficient between the sealing ring and the sealing surface by more than 30%, and the arc-shaped transition groove bottom avoids stress concentration and improves the structural durability; the texture ridges and grooves on the inner wall are distributed in a staggered manner, and cooperate with the outer wall structure to form a three-dimensional wear-resistant network, which effectively disperses wear under bidirectional friction conditions.

[0012] (2) The oil storage micro-hole structure on the groove bottom can pre-store lubricating medium during assembly, dynamically release with pressure changes during operation, form a continuous lubricating film, effectively avoid abrasive wear and adhesive wear caused by dry friction, and enable the sealing ring to maintain stable sealing performance under no external lubrication conditions. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art based on these drawings.

[0014] Figure 1 A structure perspective view is provided for the high-wear-resistance composite rubber O-shaped ring embodiment of the present application.

[0015] Figure 2 A sawtooth strip structure sectional view is provided for the high-wear-resistance composite rubber O-shaped ring embodiment of the present application.

[0016] Figure 3 A sawtooth strip structure local enlarged view is provided for the high-wear-resistance composite rubber O-shaped ring embodiment of the present application.

[0017] Figure 4This is a partial cross-sectional view of the sealing ring structure provided in an embodiment of a high wear-resistant composite rubber O-ring of this utility model.

[0018] 1. Sealing ring; 2. Serrated strip; 3. Wear-resistant rib; 4. Groove; 5. Wear-resistant surface; 6. Textured ridge; 7. Trench. Detailed Implementation

[0019] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0020] like Figures 1-4 As shown in the figure, the present invention provides a high wear-resistant composite rubber O-ring, including a sealing ring 1. The outer wall of the sealing ring 1 is provided with a plurality of serrated strips 2, and grooves 7 are provided between the serrated strips 2. Both sides of the sealing ring 1 are provided with wear-resistant surfaces 5, and one side of the wear-resistant surface 5 is provided with a wear-resistant rib 3, which is connected to the sealing ring 1 through the wear-resistant surface 5. The inner wall of the sealing ring 1 is provided with textured ridges 6, and grooves 4 are provided between the textured ridges 6.

[0021] In this embodiment, a sealing ring 1 is included. As the core sealing component, the sealing ring 1's structural design fully considers sealing performance, wear resistance, and adaptability. The outer wall of the sealing ring 1 is provided with several serrated strips 2, and grooves 7 are formed between the serrated strips 2. These serrated strips 2 are continuously distributed in a spiral shape along the outer wall of the sealing ring 1. From a spatial perspective, the serrated strips 2 are tightly fitted to the circumferential outer wall of the sealing ring 1, and grooves 7 are formed between adjacent serrated strips 2. The depth of the grooves 7 is set to 0.2-0.5 mm, the width to 0.3-0.6 mm, and the bottom of the grooves 7 has an arc-shaped transition. This arc-shaped transition design effectively avoids stress concentration and enhances the structural strength of the outer wall of the sealing ring 1. During actual operation, when the sealing ring 1 is installed in the sealing cavity, the serrated strip 2 undergoes a certain degree of compression deformation against the cavity wall. The spiral serrated strip 2 forms multiple sealing lines on the cavity wall, increasing the path length and resistance of fluid leakage, thereby improving sealing performance. Simultaneously, the groove 7 not only assists in sealing but also accommodates impurities and wear particles generated during the sealing process, preventing them from entering the sealing gap and affecting the sealing effect. Wear-resistant surfaces 5 are provided on both sides of the sealing ring 1. A wear-resistant rib 3 is provided on one side of the wear-resistant surface 5. The wear-resistant rib 3 is connected to the sealing ring 1 through the wear-resistant surface 5. The wear-resistant surface 5 is parallel to the axial end face of the sealing ring 1 and is opposite to the two axial end faces of the sealing cavity during installation. A wear-resistant rib 3 is provided on one side of the wear-resistant surface 5 and is connected to the sealing ring 1 through the wear-resistant surface 5. The wear-resistant ribs 3 are continuous strip-shaped protrusions with a cylindrical cross-section, a height of 0.1-0.3 mm, and a width of 0.5-1.0 mm, distributed in a ring array along the edge of the wear-resistant surface 5. The wear-resistant ribs 3 and the wear-resistant surface 5 are integrally molded to ensure a strong connection between them without any weak points; When the sealing ring 1 is subjected to axial pressure or vibration, the wear-resistant rib 3 can disperse the pressure, reduce the direct friction area between the wear-resistant surface 5 and the end face of the cavity, and lower the wear rate. Furthermore, the surface of the wear-resistant surface 5 is sandblasted to form a micron-level rough structure with a roughness Ra value of 3.2-6.3 μm, and the thickness of the wear-resistant surface 5 is 10%-15% of the wall thickness of the sealing ring 1. This micron-level rough structure increases the friction between the wear-resistant surface 5 and the end face of the cavity, preventing relative sliding of the sealing ring 1 in the axial direction. Simultaneously, the tiny pits formed on the rough surface can store a certain amount of lubricating grease, further reducing friction.

[0022] The inner wall of the sealing ring 1 is provided with textured ridges 6, and grooves 4 are provided between the textured ridges 6. The textured ridges 6 and the serrated strips 2 on the outer wall are staggered in axial projection, and the staggered distance is 1 / 3 to 1 / 2 of the width of the serrated strips 2. This staggered design allows the structures of the inner and outer walls of the sealing ring 1 to support each other when subjected to radial force, thereby enhancing the overall resistance to deformation. When the shaft component rotates or reciprocates within the sealing ring 1, the textured ridges 6 make close contact with the shaft surface, forming a sealing barrier. The grooves 4 can accommodate residual liquid or gas on the shaft surface, reducing the risk of leakage. At the same time, the grooves 4 also play a certain buffering role, reducing the frictional resistance between the shaft and the inner wall of the sealing ring 1, and extending the service life of the sealing ring 1.

[0023] Specifically, the serrated strips 2 are continuously distributed in a spiral shape along the outer wall of the sealing ring 1, and the grooves 7 between adjacent serrated strips 2 have a depth of 0.2-0.5 mm and a width of 0.3-0.6 mm, with an arc-shaped transition at the bottom of the grooves 7.

[0024] Furthermore, the wear-resistant rib 3 is a continuous strip-shaped protrusion with a cylindrical cross-section, a height of 0.1-0.3 mm, a width of 0.5-1.0 mm, and is distributed in a ring array along the edge of the wear-resistant surface 5.

[0025] Furthermore, the wear-resistant surface 5 is sandblasted to form a micron-level rough structure with a roughness Ra value of 3.2-6.3μm, and the thickness of the wear-resistant surface 5 is 10%-15% of the wall thickness of the sealing ring 1.

[0026] It should be noted that the bottom of the groove 7 is provided with oil-retaining micropores with a diameter of 0.1-0.3 mm and a depth of 0.05-0.1 mm, and a micropore density of 10-30 per square centimeter. These oil-retaining micropores are formed at the bottom of the groove 7 through a special processing technology. Before the sealing ring 1 is assembled, an appropriate amount of lubricating grease can be pre-injected into the micropores. During the operation of the sealing ring 1, with changes in temperature and pressure, the lubricating grease stored in the micropores will gradually seep out, forming a lubricating film between the serrated strip 2 and the cavity wall, effectively reducing the coefficient of friction, reducing wear, and further enhancing the sealing performance.

[0027] It is understandable that the textured ridges 6 on the inner wall of the sealing ring 1 and the serrated strips 2 on the outer wall are misaligned in the axial projection, with the misalignment distance being 1 / 3 to 1 / 2 of the width of the serrated strips 2.

[0028] Working steps: 1. Insert sealing ring 1 into the designated position to seal it; 2. The serrated strip 2 and the textured ridge 6 form a line contact with the sealing surface; 3. Lubricating oil is injected into the groove 7. During use, the micropores continuously release lubricating oil, forming a lubricating film between the sealing surface and the sealing ring 1, which further reduces friction. IV. The wear-resistant surface 5 effectively prevents the sealing ring 1 from shifting during equipment operation; 5. Wear-resistant ribs 3 effectively protect the wear-resistant surface 5 and reduce the wear rate of the wear-resistant surface 5.

[0029] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A high wear-resistant composite rubber O-ring, comprising a sealing ring (1), characterized in that, The outer wall of the sealing ring (1) is provided with a plurality of serrated strips (2), and grooves (7) are provided between the serrated strips (2); The sealing ring (1) has wear-resistant surfaces (5) on both sides, and wear-resistant ribs (3) are provided on one side of the wear-resistant surface (5). The wear-resistant ribs (3) are connected to the sealing ring (1) through the wear-resistant surface (5). The inner wall of the sealing ring (1) is provided with textured ridges (6), and grooves (4) are provided between the textured ridges (6).

2. The high wear-resistant composite rubber O-ring according to claim 1, characterized in that, The serrated strips (2) are continuously distributed in a spiral shape along the outer wall of the sealing ring (1). The grooves (7) between adjacent serrated strips (2) have a depth of 0.2-0.5 mm and a width of 0.3-0.6 mm. The bottom of the grooves (7) has an arc transition.

3. The high wear-resistant composite rubber O-ring according to claim 1, characterized in that, The wear-resistant ribs (3) are continuous strip-shaped protrusions with a cylindrical cross-section, a height of 0.1-0.3 mm, a width of 0.5-1.0 mm, and are distributed in a ring array along the edge of the wear-resistant surface (5).

4. The high wear-resistant composite rubber O-ring according to claim 1, characterized in that, The wear-resistant surface (5) is sandblasted to form a micron-level rough structure with a roughness Ra value of 3.2-6.3μm, and the thickness of the wear-resistant surface (5) is 10%-15% of the wall thickness of the sealing ring (1).

5. The high wear-resistant composite rubber O-ring according to claim 1, characterized in that, The bottom of the groove (7) is provided with oil storage micropores with a diameter of 0.1-0.3 mm, a micropore depth of 0.05-0.1 mm, and a micropore density of 10-30 per square centimeter.

6. The high wear-resistant composite rubber O-ring according to claim 1, characterized in that, The textured ridges (6) on the inner wall of the sealing ring (1) and the serrated strips (2) on the outer wall are misaligned in the axial projection, with the misalignment distance being 1 / 3 to 1 / 2 of the width of the serrated strips (2).

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