High elongation rubber seal

Abstract

The utility model provides a kind of high extensibility rubber sealing ring, belong to sealing element field.It solves the problem that existing sealing ring is easy to loosen.This high extensibility rubber sealing ring, including sealing outer ring, is equipped with sealing ring with its cooperation in the ring groove being set on sealing outer ring, annular spring is embedded in ring groove inner side wall, the inner side wall of sealing outer ring is equipped with the sealing lip surface of zigzag line structure, multiple sealing baffle are set in ring groove inside along circumference interval, sealing baffle and ring groove inner wall cooperation form multiple sealing cavities, extruding piece of section being T type is extruded and embedded in each sealing cavity, the T type end of extruding piece is trapezoidal structure, extruding piece inside is equipped with sealing framework, which is also T type section and end is trapezoidal, for improving extruding sealing strength, the bottom of sealing cavity is equipped with extruding surface, which is extruded and cooperated with the trapezoidal end of extruding piece.The utility model has the advantages of high sealing and anti-loosening.

Description

Technical Field

[0001] This utility model belongs to the field of sealing components, and relates to a sealing ring, particularly a high-elongation rubber sealing ring. Background Technology

[0002] In the field of mechanical seals, especially in equipment involving high pressure, high wear, or dynamic operating environments, traditional rubber seals often face the following technical bottlenecks: In the service environment of severe vibration, the vibration process will cause repeated fluctuations in the sealing contact pressure of the seal, which will lead to relative loosening of the seal end face and seriously affect the sealing performance. Summary of the Invention

[0003] The purpose of this invention is to address the aforementioned problems in the existing technology by providing a highly elongated rubber sealing ring to solve these problems.

[0004] The purpose of this utility model can be achieved through the following technical solution: a high elongation rubber sealing ring, including a sealing outer ring with an annular structure, characterized in that an annular groove is provided on the sealing outer ring, a sealing ring that cooperates with the annular groove is provided above the annular groove, and an annular spring is embedded in the inner wall of the annular groove to enhance the radial narrowing and prevent the sealing ring from loosening. The inner wall of the outer sealing ring is provided with a sealing lip surface with a corrugated line structure; Multiple sealing baffles are arranged circumferentially within the annular groove, and the sealing baffles cooperate with the inner wall of the annular groove to form multiple sealing cavities. Each of the sealed cavities is fitted with an extrusion member with a T-shaped cross-section, and the T-shaped end of the extrusion member has a trapezoidal structure; The extrusion component has a sealing skeleton with a T-shaped cross section and trapezoidal ends inside, which is used to improve the extrusion sealing strength. The bottom of the sealed cavity is provided with an extrusion surface that is mutually extruded and engaged with the trapezoidal end of the extrusion member.

[0005] In the aforementioned high-elongation rubber sealing ring, the corrugated structure of the sealing lip is a continuous wavy structure.

[0006] In the above-mentioned high-elongation rubber sealing ring, the sealing partition is integrally formed with the bottom of the annular groove and is evenly distributed circumferentially. The multiple sealing cavities have equal volumes and are evenly arranged circumferentially along the outer sealing ring.

[0007] In the aforementioned high-elongation rubber sealing ring, the sealing ring and the ring groove are interference fit.

[0008] In the aforementioned high-elongation rubber sealing ring, the inclination angle of the extruded surface matches the inclination angle of the trapezoidal end of the extruded part, with a deviation range within ±2°.

[0009] Compared with existing technologies, this high-elongation rubber sealing ring significantly improves sealing reliability, pressure resistance, and adaptability to operating conditions through the combined effect of a triple sealing structure of annular spring anti-loosening, wavy lip dynamic compensation, and multi-chamber pressure self-tightening. Its unique wavy sealing lip provides excellent elongation and wear compensation capabilities, extending service life. The T-shaped extrusion and trapezoidal surface structure utilize the wedge effect to convert axial pressure into radial sealing force, achieving self-tightening sealing under high pressure. At the same time, the uniform distribution of multiple chambers avoids stress concentration. The overall structure is compact and has reasonable stress distribution, combining high sealing performance, high durability, and high environmental adaptability. Attached Figure Description

[0010] Figure 1 This is a three-dimensional structural diagram of the highly elongated rubber sealing ring.

[0011] Figure 2 This is a partial cross-sectional schematic diagram of the high-elongation rubber seal.

[0012] In the figure, 1. Sealing outer ring; 2. Ring groove; 3. Sealing ring; 4. Ring spring; 5. Sealing lip; 6. Sealing partition; 7. Sealing cavity; 8. Extruded part; 9. Sealing skeleton; 10. Extruded lining. Detailed Implementation

[0013] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0014] like Figure 1 , Figure 2As shown, this high-elongation rubber sealing ring includes a sealing outer ring 1 with an annular structure. An annular groove 2 is formed on the sealing outer ring 1, and a sealing ring 3 that mates with it is provided above the annular groove 2. An annular spring 4 is embedded in the inner wall of the annular groove 2 to enhance the radial narrowing and prevent the sealing ring 3 from loosening. The inner wall of the sealing outer ring 1 is provided with a sealing lip surface 5 with a zigzag structure. Multiple sealing partitions 6 are arranged circumferentially in the annular groove 2. The sealing partitions 6 and the inner wall of the annular groove 2 cooperate to form multiple sealing cavities 7. Each sealing cavity 7 is extruded and embedded with an extrusion member 8 with a T-shaped cross section. The T-shaped end of the extrusion member 8 has a trapezoidal structure. The extrusion member 8 has a sealing skeleton 9 with the same T-shaped cross section and trapezoidal end to improve the extrusion sealing strength. The bottom of the sealing cavity 7 is provided with an extrusion surface 10 that mates with the trapezoidal end of the extrusion member 8. The zigzag structure of the sealing lip surface 5 is a continuous wavy structure. The sealing partition 6 is integrally formed with the bottom of the annular groove 2 and is evenly distributed circumferentially. Multiple sealing cavities 7 have equal volumes and are evenly arranged circumferentially along the outer sealing ring 1. The sealing ring 3 and the annular groove 2 are interference-fitted. The inclination angle of the extruded surface 10 matches the inclination angle of the trapezoidal end of the extruded part 8, with a deviation range within ±2°.

[0015] The working principle of this high-elongation rubber sealing ring is to achieve reliable static and dynamic sealing through a combination of multiple structures. First, the annular spring 4 provides a continuous radial constriction force to prevent the inner wall of the outer sealing ring 1 from loosening, thus forming a basic seal. Second, the corrugated sealing lip 5 utilizes its high elastic deformation capability to adapt to the movement and wear of the shaft, ensuring the following performance of the dynamic seal. Finally, the T-shaped extrusion member 8 in multiple independent sealing cavities 7 moves downward under the action of medium pressure. Through the cooperation of its trapezoidal end with the inclined surface of the cavity bottom extrusion contact surface 10, the axial pressure is converted into radial expansion force, which significantly enhances the sealing clamping force and forms a pressure self-tightening effect, thereby greatly improving the sealing reliability and adaptability of the sealing ring under high-pressure conditions.

[0016] Through the combined effect of the triple sealing structure of the ring spring 4 for anti-loosening, the corrugated lip surface for dynamic compensation, and the multi-chamber pressure self-tightening, the sealing reliability, pressure resistance, and adaptability to working conditions are significantly improved. Its unique corrugated sealing lip surface 5 provides excellent extensibility and wear compensation capability, extending service life. The T-shaped extrusion part 8 and the trapezoidal surface structure utilize the wedge effect to convert axial pressure into radial sealing force, realizing a self-tightening seal under high pressure. At the same time, the uniform distribution of multiple chambers avoids stress concentration. The overall structure is compact and the stress is reasonable, combining high sealing performance, high durability, and high environmental adaptability.

[0017] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0018] Although this document uses terms such as "etc." extensively, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this invention; interpreting them as any additional limitation would contradict the spirit of this invention.

Claims

1. A high-elongation rubber sealing ring, comprising a sealing outer ring (1) with an annular structure, characterized in that, The sealing outer ring (1) has an annular groove (2), and a sealing ring (3) that cooperates with it is provided above the annular groove (2). An annular spring (4) is embedded in the inner wall of the annular groove (2) to enhance the radial narrowing and prevent the sealing ring (3) from loosening. The inner wall of the sealing outer ring (1) is provided with a sealing lip (5) with a corrugated structure. Multiple sealing partitions (6) are provided circumferentially in the annular groove (2), and the sealing partitions (6) cooperate with the inner wall of the annular groove (2) to form multiple sealing cavities (7). Each of the sealed cavities (7) is fitted with an extrusion member (8) with a T-shaped cross section, and the T-shaped end of the extrusion member (8) has a trapezoidal structure; The extrusion member (8) has a sealing skeleton (9) with the same T-shaped cross section and trapezoidal ends inside, which is used to improve the extrusion sealing strength; The bottom of the sealing cavity (7) is provided with an extrusion surface (10) that is mutually extruded and engaged with the trapezoidal end of the extrusion member (8).

2. The high-elongation rubber sealing ring according to claim 1, characterized in that, The corrugated structure of the sealing lip (5) is a continuous wavy structure.

3. The high-elongation rubber sealing ring according to claim 1, characterized in that, The sealing partition (6) is integrally formed with the bottom of the annular groove (2) and is evenly distributed along the circumference. The multiple sealing cavities (7) have equal volumes and are evenly arranged along the circumference of the sealing outer ring (1).

4. The high-elongation rubber sealing ring according to claim 1, characterized in that, The sealing ring (3) and the ring groove (2) are interference fit.

5. A high-elongation rubber sealing ring according to claim 1, characterized in that, The tilt angle of the extruded surface (10) matches the tilt angle of the trapezoidal end of the extruded part (8), with a deviation range within ±2°.

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