Self-limiting torque non-decaying rectangular seal ring

Abstract

Provided is a self-limiting torque non-declining rectangular sealing ring, belonging to the technical field of sealing devices. The sealing ring comprises a sealing ring body of rubber material, which is circumferentially provided with a plurality of non-circular hole positions, and metal limiting columns are embedded in the holes. The metal limiting columns are composed of a plurality of small limiting columns with different thicknesses, and by increasing or decreasing the number of small limiting columns, the overall height of the limiting columns can be flexibly adjusted to adapt to different compression requirements. The cooperation of the non-circular hole position and the metal limiting column can effectively prevent rotation, and the annular groove on the outer surface of the limiting column enhances the bonding force with the rubber. The utility model effectively limits the compression deformation of the sealing ring through adjustable rigid support, prevents crushing, ensures the long-term stability of the sealing torque, and is particularly suitable for harsh sealing environments such as high pressure and variable working conditions.

Description

Technical Field

[0001] This utility model belongs to the field of sealing device technology, specifically relating to a self-limiting torque-non-attenuating rectangular sealing ring for use under high pressure and high stress conditions. Background Technology

[0002] In mechanical equipment, sealing rings are widely used to prevent fluid leakage and isolate dust and impurities. Traditional rectangular sealing rings are prone to excessive deformation, crushing, or permanent deformation under high pressure or long-term pressure conditions, leading to decreased sealing performance or even failure. Although there are sealing rings with metal skeleton reinforcement in existing technology, their structure is fixed and cannot be flexibly adjusted according to the compression amount, resulting in poor applicability. Furthermore, under high pressure, the metal parts are prone to detachment or displacement from the rubber.

[0003] Therefore, there is an urgent need for a sealing ring structure that can ensure sealing performance, effectively prevent deformation and crushing, and has good adaptability and stability. Utility Model Content

[0004] The technical problem solved by this utility model is to provide a rectangular sealing ring with self-limiting torque that does not decrease, so as to solve the problems of existing sealing rings being easily deformed, crushed, and having unstable sealing performance under high pressure.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A self-limiting torque-non-attenuating rectangular sealing ring includes a sealing ring body. The sealing ring body has multiple non-circular holes evenly distributed along the circumference. Metal limiting posts are embedded in the non-circular holes. The metal limiting posts are used to provide limiting support when the sealing ring is under pressure.

[0006] Further defining the above scheme, the metal limiting post is composed of 2-4 small limiting posts stacked together, and the thickness of the small limiting posts is different. The overall height of the metal limiting post can be adjusted by increasing or decreasing the number of small limiting posts.

[0007] Further defining the above scheme, the cross-sectional shape of the non-circular hole and the metal limiting post is an ellipse or polygon that can be adapted to each other.

[0008] As a further refinement of the above scheme, the outer surface of the metal limiting post is provided with an annular groove, which is used to enhance the bonding force between the metal limiting post and the sealing ring body.

[0009] Further defining the above scheme, the metal limiting posts are not uniformly distributed in the high-stress area of ​​the sealing ring body, and the distribution density in the high-stress area is greater than that in the low-stress area.

[0010] As a further limitation of the above scheme, the cross-sectional shape of the sealing ring body is a rectangle with a rounded transition.

[0011] Further specifying the above solution, the sealing ring body is made of rubber material, and the metal limiting post is made of low carbon steel, stainless steel or aluminum steel material.

[0012] Advantages of this utility model compared to the prior art: 1. This solution provides rigid support for the sealing ring by embedding metal limiting posts along the circumference inside the sealing ring, preventing the sealing ring from being over-compressed or crushed; 2. The metal limiting posts in this solution adopt a stacked plate structure, which can be flexibly adjusted and added or removed according to the amount of compression, making it highly adaptable; 3. This design uses non-circular holes in conjunction with non-circular limiting posts to prevent rotation and improve support stability; 4. In this solution, an annular groove is made on the outer surface of the metal limiting post to enhance the bonding force between the metal and the rubber and prevent it from falling off; 5. This solution strengthens the limiting effect and effectively controls deformation by setting high-density metal limiting posts in high-stress areas; 6. The circular arc transition design of the sealing ring in this solution reduces stress concentration and extends service life. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This utility model Figure 1 Schematic diagram of the AA-direction section; Figure 3 This is a schematic diagram of the structure of the metal limiting post in this utility model; Figure 4 This is a schematic diagram of the non-uniformly distributed structure of this utility model. Detailed Implementation

[0014] 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 scope of protection of the present utility model.

[0015] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0016] Please see Figure 1-4 The embodiments of this utility model are described in detail below.

[0017] like Figure 1 As shown, the self-limiting torque-non-attenuating rectangular sealing ring provided by this utility model includes a sealing ring body 1 made of rubber, the cross-section of which is a rectangular structure with a rounded transition, as shown. Figure 2 As shown, this effectively reduces stress concentration. Multiple non-circular holes 2 are evenly distributed along the circumference of the sealing ring body 1. These holes are blind holes and do not penetrate the ring. Each non-circular hole 2 is embedded with a metal limiting post 3, which provides limiting support when the sealing ring is under pressure.

[0018] like Figure 1 , Figure 4 As shown, the cross-sectional shape of the non-circular hole 2 and the metal limiting post 3 is elliptical or polygonal to prevent the limiting post from rotating.

[0019] like Figure 2 As shown, the metal limiting post 3 is composed of 2-4 small limiting posts 4 stacked together. The thickness of the small limiting posts 4 is different, and they can be flexibly combined and increased or decreased according to the actual compression requirements to achieve the adjustment of the overall height of the metal limiting post 3.

[0020] like Figure 3 As shown, the outer surface of the metal limiting post 3 is provided with an annular groove 5. This groove can enhance the mechanical interlocking effect between the metal and the rubber, preventing the metal limiting post 3 from falling off or shifting under high pressure conditions. Preferably, the limiting post is made of low carbon steel, stainless steel, or aluminum steel.

[0021] like Figure 4 As shown, in order to further improve the stability and deformation resistance of the sealing ring, the metal limiting posts 3 are arranged with a higher density in the high stress areas of the sealing ring, such as corners and interfaces, forming a non-uniform distribution, thereby more effectively controlling local deformation.

[0022] Working principle: When the sealing ring is subjected to axial pressure, the rubber body undergoes compression deformation, and the metal limiting post 3 provides rigid support, preventing excessive compression or crushing of the rubber. The non-circular hole 2 matches the shape of the metal limiting post 3 to prevent rotation and ensure stable support. By adjusting the number of small limiting posts 4, different compression requirements can be accommodated. The annular groove 5 enhances the bonding force and prevents metal parts from falling off. The reinforced arrangement in high-stress areas further controls deformation and ensures long-term stable sealing performance.

[0023] This utility model has a simple structure and strong applicability, and is particularly suitable for sealing requirements under high pressure and high stress conditions.

[0024] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0025] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A self-limiting torque-non-attenuating rectangular sealing ring, characterized in that: The sealing ring body (1) includes a plurality of non-circular holes (2) evenly distributed along the circumferential direction on the sealing ring body (1). A metal limiting post (3) is embedded in the non-circular hole (2). The metal limiting post (3) is used to provide limiting support when the sealing ring is compressed.

2. The self-limiting torque-non-attenuating rectangular sealing ring according to claim 1, characterized in that: The metal limiting post (3) is composed of 2-4 small limiting posts (4) stacked together. The thickness of the small limiting posts (4) is different. The overall height of the metal limiting post (3) can be adjusted by increasing or decreasing the number of small limiting posts (4).

3. The self-limiting torque-non-attenuating rectangular sealing ring according to claim 1, characterized in that: The cross-sectional shapes of the non-circular hole (2) and the metal limiting post (3) are elliptical or polygonal and can be adapted to each other.

4. The self-limiting torque-non-attenuating rectangular sealing ring according to claim 1, characterized in that: The outer surface of the metal limiting post (3) is provided with an annular groove (5), which is used to enhance the bonding force between the metal limiting post (3) and the sealing ring body (1).

5. The self-limiting torque-non-attenuating rectangular sealing ring according to claim 1, characterized in that: The metal limiting post (3) is not uniformly distributed in the high stress area of ​​the sealing ring body (1), and the distribution density in the high stress area is greater than that in the low stress area.

6. The self-limiting torque-non-attenuating rectangular sealing ring according to claim 1, characterized in that: The cross-sectional shape of the sealing ring body (1) is a rectangle with a rounded transition.

7. The self-limiting torque-non-attenuating rectangular sealing ring according to claim 1, characterized in that: The sealing ring body (1) is made of rubber material, and the metal limiting post (3) is made of low carbon steel, stainless steel or aluminum steel.

Images