CN215950390U

CN215950390U - Sealing ring

Info

Publication number: CN215950390U
Application number: CN202122169472.8U
Authority: CN
Inventors: 章文清
Original assignee: Zhejiang Hongxin Seal Co ltd
Current assignee: Zhejiang Hongxin Seal Co ltd
Priority date: 2021-09-08
Filing date: 2021-09-08
Publication date: 2022-03-04
Anticipated expiration: 2031-09-08

Abstract

The utility model provides a sealing ring, and belongs to the technical field of machinery. It has solved the not firm and sealed effect ideal problem inadequately of current sealing washer location. This sealing washer, including annular body, the lateral wall of body is equipped with the annular groove, and the notch of annular groove sets up toward the outside towards last to one side, and the tank bottom department of annular groove is equipped with the support inner circle, and the inside wall ring of body is equipped with sealed protruding edge, supports the outside that the inner circle is located sealed protruding edge. This sealing washer has the better and sealed better advantage of effect of location.

Description

Sealing ring

Technical Field

The utility model belongs to the technical field of machinery, and relates to a sealing ring.

Background

The sealing ring is one of the most widely used hydraulic and pneumatic transmission systems, and is generally made of nitrile rubber, natural rubber, chloroprene rubber, ethylene propylene rubber, fluorine rubber, silicon rubber and blend rubber. The section of a common sealing ring is circular, but the common sealing ring is easy to deform flatly after being extruded, and the sealing effect is reduced or lost, so that a novel sealing ring is needed in the field to solve the problems.

For example, a sealing ring (application number: 200820088050.X) disclosed in chinese patent document includes a sealing ring main body, sealing teeth are cooperatively arranged on an inner ring of the sealing ring main body, friction teeth are cooperatively arranged on an outer ring of the sealing ring main body, the sealing teeth are in two-step shape, the friction teeth are in four-convex shape, and the sealing ring main body, the friction teeth and the sealing teeth are integrally formed. However, the sealing ring has the problems of insufficient firmness in positioning and unsatisfactory sealing effect

As another example, a novel seal ring (application No. 201810871677.0) disclosed in the chinese patent document is a closed-loop O-ring, in which an annular groove is provided in the middle, the annular groove divides the seal ring into an inner ring and an outer ring, the inner wall of the inner ring is inclined inward, the outer wall of the outer ring is inclined outward, small domes are provided at the opening ends of the annular groove of the inner ring and the outer ring, the small domes extend away from the annular groove and exceed the inner ring and the outer ring, respectively, and a large dome is provided at the bottom of the annular groove to connect the inner ring and the outer ring; the novel sealing ring is of an integrated structure. But this novel sealing washer exists the location firm inadequately and the sealed effect not ideal problem.

Disclosure of Invention

The utility model aims to solve the problems in the prior art and provides a sealing ring with a good positioning effect and a good sealing effect.

The purpose of the utility model can be realized by the following technical scheme: the utility model provides a sealing ring, includes annular body, the lateral wall of body be equipped with the annular groove, its characterized in that, the notch of annular groove up the outside setting to one side, the tank bottom department of annular groove be equipped with the support inner circle, the inside wall ring of body be equipped with sealed protruding edge, the support inner circle be located the outside on sealed protruding edge.

When the sealing device is used, the body is hooped on the outer side wall of the shaft part through the supporting inner ring, the sealing convex edge is arranged on the inner side wall of the body, the supporting inner ring is located on the outer side of the sealing convex edge, so that the sealing convex edge is tightly attached to the outer side wall of the shaft part, the sealing effect is good, and the service life is prolonged.

In the sealing ring, a sealing groove is arranged in the middle of the sealing convex edge and is coaxial with the body. Through setting up foretell sealed recess, improved the sealed effect of sealed protruding edge.

In the above sealing ring, the bottom of the annular groove is a positioning portion for supporting the inner ring to be embedded, and the positioning portion and the body are coaxially arranged. The support inner ring is embedded into the positioning part, so that the connection effect is good, and the support inner ring is prevented from falling off.

In the sealing ring, the cross section of the supporting inner ring is circular. The cross section of the supporting inner ring is circular, and the supporting inner ring has the advantages of convenience in manufacturing and good supporting effect.

In the above sealing ring, the cross section of the supporting inner ring is elliptical. The cross section of the supporting inner ring is elliptical, and the supporting inner ring has the advantage of good supporting effect.

In the above sealing ring, the sealing convex edges are arranged in an up-and-down symmetry manner and are in smooth transition through the arc-shaped surfaces. By adopting the arrangement, the sealing convex edge has the advantages of good sealing effect and long service life.

In the above sealing ring, a ratio of a height of the sealing flange to a height of the body is 1: 1.2-1: 2.

in the sealing ring, the supporting inner ring is made of spring steel. The supporting inner ring is made of spring steel, so that the sealing ring has the advantage of good elastic effect, and the sealing effect of the sealing ring is improved.

In the above sealing ring, the body is made of fluororubber. The body is made of fluororubber, and has the advantages of good heat resistance, oxidation resistance, oil resistance and corrosion resistance and long service life.

Compared with the prior art, this sealing washer has following advantage:

1. the body is hooped on the outer side wall of the shaft part through the supporting inner ring, and the supporting inner ring is positioned on the outer side of the sealing convex edge to enable the sealing convex edge to be tightly attached to the outer side wall of the shaft part, so that the shaft part has the advantage of good sealing effect, and the service life is prolonged;

2. the middle part of the sealing convex edge is provided with a sealing groove which is coaxial with the body, so that the sealing effect of the sealing convex edge is improved;

3. the positioning part of the annular groove embedded in the supporting inner ring has a good connecting effect, and the supporting inner ring is prevented from falling off;

4. the body is made of fluororubber, and has the advantages of good heat resistance, oxidation resistance, oil resistance and corrosion resistance and long service life.

Drawings

Fig. 1 is a schematic cross-sectional view of a seal ring.

Fig. 2 is a schematic cross-sectional view of another construction of a seal ring.

In the figure, 1, a body; 1a, an annular groove; 1b, sealing the convex edge; 1c, sealing the groove; 1d, a positioning part; 2. and supporting the inner ring.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

As shown in fig. 1, a sealing ring comprises an annular body 1, wherein an annular groove 1a is formed in the outer side wall of the body 1, and the sealing ring is characterized in that a notch of the annular groove 1a is arranged obliquely upward and outward, a supporting inner ring 2 is arranged at the groove bottom of the annular groove 1a, a sealing convex edge 1b is annularly arranged on the inner side wall of the body 1, and the supporting inner ring 2 is located on the outer side of the sealing convex edge 1 b.

The middle part of the sealing convex edge 1b is provided with a sealing groove 1c, the sealing groove 1c is coaxial with the body 1, and the sealing effect of the sealing convex edge 1b is improved. The bottom of the annular groove 1a is used for supporting the positioning part 1d embedded in the inner ring 2, and the positioning part 1d is coaxial with the body 1, so that the connecting effect is good, and the support of the inner ring 2 is avoided from falling off.

The cross section of the supporting inner ring 2 is circular, and the supporting inner ring has the advantages of convenience in manufacturing and good supporting effect. As another mode, as shown in fig. 2, the cross section of the support inner ring 2 is elliptical, which has an advantage of good support effect.

Sealed protruding edge 1b is the upper and lower symmetry setting and sealed protruding edge 1b passes through the smooth transition of arcwall face, makes sealed protruding edge 1b have sealed effect and has the longer advantage of life when better. The ratio of the height of the sealing flange 1b to the height of the body 1 is 1: 1.2-1: 2.

the supporting inner ring 2 is made of spring steel, has the advantage of good elastic effect, and improves the sealing effect of the sealing ring. The body 1 is made of fluororubber, and has the advantages of good heat resistance, oxidation resistance, oil resistance and corrosion resistance and long service life.

When the shaft part sealing device is used, the body 1 is hooped on the outer side wall of the shaft part through the supporting inner ring 2, the sealing convex edge 1b is arranged on the inner side wall of the body 1, the supporting inner ring 2 is located on the outer side of the sealing convex edge 1b, so that the sealing convex edge 1b is tightly attached to the outer side wall of the shaft part, the sealing effect is good, and the service life is prolonged.

The specific embodiments described herein are merely illustrative of the spirit of the utility model. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the utility model as defined in the appended claims.

Although the terms of the body 1, the annular groove 1a, the sealing bead 1b, the sealing groove 1c, the positioning portion 1d, the support inner ring 2, etc. are used more herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.

Claims

1. The utility model provides a sealing ring, includes annular body (1), the lateral wall of body (1) be equipped with annular groove (1a), its characterized in that, the notch of annular groove (1a) set up toward the outside to one side, the tank bottom department of annular groove (1a) be equipped with support inner circle (2), the inside wall ring of body (1) be equipped with sealed protruding edge (1b), support inner circle (2) be located sealed protruding outside along (1 b).

2. A sealing ring according to claim 1, characterized in that the sealing flange (1b) is provided with a sealing groove (1c) in the middle and the sealing groove (1c) is arranged coaxially with the body (1).

3. A ring seal according to claim 1, characterized in that the bottom of the annular groove (1a) is a positioning portion (1d) for embedding the support inner ring (2) and the positioning portion (1d) is arranged coaxially with the body (1).

4. A ring seal according to claim 1, 2 or 3, characterized in that the supporting inner ring (2) is circular in cross-section.

5. A ring seal according to claim 1, 2 or 3, characterized in that the cross-section of the inner support ring (2) is oval.

6. A sealing ring according to claim 1, 2 or 3, characterized in that the sealing lip (1b) is arranged symmetrically up and down and the sealing lip (1b) is smoothly transited by an arc surface.

7. A ring seal according to claim 1, 2 or 3, characterized in that the ratio of the height of the sealing bead (1b) to the height of the body (1) is 1: 1.2-1: 2.

8. a ring seal according to claim 1, 2 or 3, characterized in that the inner support ring (2) is made of spring steel.

9. A seal ring according to claim 1, 2 or 3, characterized in that said body (1) is made of a fluoroelastomer.