CN217207709U

CN217207709U - High-pressure retraction elastic sealing gasket

Info

Publication number: CN217207709U
Application number: CN202220266140.3U
Authority: CN
Inventors: 徐瑞刚
Original assignee: Langfang Tengyu Sealing Material Co ltd
Current assignee: Langfang Tengyu Sealing Material Co ltd
Priority date: 2022-02-09
Filing date: 2022-02-09
Publication date: 2022-08-16
Anticipated expiration: 2032-02-09

Abstract

The utility model discloses a high-pressure retracting elastic sealing gasket, which comprises a metal outer ring and an inner ring, wherein an elastic cushion block is arranged between the outer ring and the inner ring; the elastic cushion block comprises filler, and a supporting structure is arranged inside the filler; the support structure comprises a wavy annular metal belt, two ends of the metal belt are respectively connected with the outer ring and the inner ring, and a graphite belt is arranged between every two adjacent metal belts. The utility model adopts the above structure high pressure withdrawal elasticity seal gasket can solve current gasket and can not have intensity and the elastic problem of high pressure withdrawal concurrently.

Description

High-pressure retraction elastic sealing gasket

Technical Field

The utility model belongs to the technical field of seal gasket technique and specifically relates to a seal gasket of high pressure withdrawal elasticity is related to.

Background

The sealing gasket is a sealing spare part used for machines, equipment, pipelines and other places with fluid and mainly plays a role in sealing. The sealing gasket is made of metal or nonmetal plate-shaped material by cutting, stamping or cutting and is used for sealing connection between pipelines and sealing connection between machine parts of machine equipment. Can be divided into a metal sealing gasket and a non-metal sealing gasket according to the material. The metal sealing gasket has better strength, but the metal sealing gasket has poorer compressibility, sealability and rebound resilience; the strength of the non-metal sealing gasket is poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a seal gasket of high pressure withdrawal elasticity solves current gasket and can not have intensity and high pressure withdrawal elasticity's problem concurrently.

In order to realize the aim, the utility model provides a high-pressure retraction elastic sealing gasket, which comprises a metal outer ring and an inner ring, wherein an elastic cushion block is arranged between the outer ring and the inner ring; the elastic cushion block comprises filler, and a supporting structure is arranged inside the filler; the support structure comprises a wavy annular metal belt, two ends of the metal belt are respectively connected with the outer ring and the inner ring, and a graphite belt is arranged between every two adjacent metal belts.

Preferably, a plurality of buffer cavities are uniformly formed in the metal belt and the graphite belt, and elastic rubber columns are arranged in the buffer cavities.

Preferably, the filling material comprises polytetrafluoroethylene layers, and a graphite layer is arranged between every two adjacent polytetrafluoroethylene layers.

Preferably, the inner surface of the outer ring is provided with a plurality of sealing cavities, and sealing columns are arranged inside the sealing cavities.

Preferably, the sealing cavities are distributed on the inner surface of the outer ring in a circumferential array, and the sealing columns are made of water-swelling resin.

Preferably, the outer surface of the outer ring and the inner surface of the inner ring are provided with corrosion-resistant zinc plating layers.

A high pressure elastic seal gasket of withdrawal, elastic cushion is located between the outer loop and the inner ring of metal, is favorable to improving seal gasket's intensity. The wavy metal belt is arranged inside the elastic cushion block, so that the strength of the elastic cushion block is improved; and the good deformability of the wavy metal strip can improve the compression resilience of the sealing gasket. The graphite strips filled between the metal strips further improve the resilience of the metal strips. The elasticity of seal gasket has been improved to the elasticity post that metal strap and graphite tape inside set up. The sealing effect of the sealing gasket is improved by the sealing columns arranged on the outer ring.

The technical solution of the present invention is further described in detail by the accompanying drawings and examples.

Drawings

FIG. 1 is a schematic longitudinal sectional view of an embodiment of a high pressure retracting elastomeric gasket of the present invention;

FIG. 2 is a schematic cross-sectional view of an embodiment of a high pressure retracting elastomeric gasket of the present invention;

fig. 3 is a schematic perspective view of an embodiment of the high-pressure retracting elastic sealing gasket of the present invention.

Reference numerals

1. An outer ring; 2. an inner ring; 3. an elastic cushion block; 4. a graphite tape; 5. a metal strip; 6. an elastic rubber column; 7. a polytetrafluoroethylene layer; 8. a graphite layer; 9. the column is sealed.

Detailed Description

The technical solution of the present invention is further explained by the accompanying drawings and examples.

Unless defined otherwise, technical or scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description herein do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

Examples

Fig. 1 is the utility model relates to a longitudinal section structure schematic diagram of the elastic seal gasket embodiment of high-pressure withdrawal, fig. 2 is the utility model relates to a cross sectional structure schematic diagram of the elastic seal gasket embodiment of high-pressure withdrawal, fig. 3 is the utility model relates to a spatial structure schematic diagram of the elastic seal gasket embodiment of high-pressure withdrawal. As shown in the figure, the high-pressure retraction elastic sealing gasket comprises a metal outer ring 1 and a metal inner ring 2, and an elastic cushion block 3 is arranged between the outer ring 1 and the inner ring 2. The outer ring 1 and the inner ring 2 have limiting and positioning effects on the elastic cushion block 3, and the metal outer ring 1 and the metal inner ring 2 are favorable for improving the strength of the sealing gasket. And corrosion-resistant zinc coatings are arranged on the outer surface of the outer ring 1 and the inner surface of the inner ring 2, so that the corrosion resistance of the outer ring 1 and the inner ring 2 is improved.

The elastic cushion block 3 comprises filling materials, the filling materials comprise a plurality of polytetrafluoroethylene layers 7 which are distributed annularly, and the polytetrafluoroethylene layers 7 are concentric circles. The polytetrafluoroethylene layer 7 has better rebound resilience and sealing performance, and the sealing effect of the sealing gasket can be improved. A graphite layer 8 is arranged between the adjacent polytetrafluoroethylene layers 7, and the graphite layer 8 has better corrosion resistance, so that the corrosion resistance effect of the sealing gasket is improved.

The support structures are arranged inside the filling materials, the filling materials are located on two sides of the support structures, and the support structures have a supporting effect on the filling materials, so that the strength of the filling materials is improved. The support structure comprises an undulating annular metal strip 5, and elastic metal sheets are arranged on the metal strip 5 in an up-and-down stacked manner. The wavy metal belt 5 has better deformability, and is favorable for improving the compression resilience of the sealing gasket. The two ends of the metal belt 5 are respectively fixedly connected with the outer ring 1 and the inner ring 2 in a welding mode, and the strength of the sealing gasket is improved. The metal belt 5 connects the inner ring 2 with the outer ring 1, and is also beneficial to improving the heat dissipation effect of the sealing gasket.

Graphite strips 4 are arranged between the adjacent metal strips 5, the graphite strips 4 are filled between the adjacent metal strips 5, and the graphite strips 4 are welded with the metal strips 5. The elastic performance of the support structure is further improved by filling the graphite strips 4 between adjacent metal strips 5.

The metal belt 5 and the graphite belt 4 are uniformly provided with a plurality of buffer cavities, and the buffer cavities penetrate through the whole supporting structure. The buffer chambers are distributed in a circumferential array on the metal strip 5. Elastic rubber 6 is fixedly bonded in the buffer cavity, and the elastic rubber column 6 improves the elasticity of the supporting structure.

The inner surface of the outer ring 1 is provided with a plurality of arc-shaped sealing cavities which are distributed on the inner surface of the outer ring 1 in a circumferential array. The inside of the sealed cavity is provided with a sealed column 9, and the sealed column 9 is made of water-swelling resin. The sealing effect of the sealing gasket is improved by utilizing the water-absorbing expansion characteristic of the water-absorbing expansion resin.

Therefore, the utility model adopts the above structure high pressure withdrawal elastic seal gasket can solve current gasket and can not have intensity and the elastic problem of high pressure withdrawal concurrently.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the preferred embodiments, those skilled in the art should understand that: the technical solution of the present invention can still be modified or replaced by other equivalent means, and the modified technical solution can not be separated from the spirit and scope of the technical solution of the present invention.

Claims

1. A high-pressure-retracting elastomeric seal gasket, comprising: the elastic cushion block is arranged between the outer ring and the inner ring; the elastic cushion block comprises filler, and a supporting structure is arranged inside the filler; the support structure comprises a wavy annular metal belt, two ends of the metal belt are respectively connected with the outer ring and the inner ring, and a graphite belt is arranged between every two adjacent metal belts.

2. A high-pressure retracting elastomeric seal gasket according to claim 1 wherein: the metal belt and the graphite belt are uniformly provided with a plurality of buffer cavities, and elastic rubber columns are arranged in the buffer cavities.

3. A high-pressure retracting elastomeric seal gasket according to claim 1 wherein: the filling material comprises polytetrafluoroethylene layers, and graphite layers are arranged between the adjacent polytetrafluoroethylene layers.

4. A high-pressure retracting elastomeric seal gasket according to claim 1 wherein: a plurality of sealing cavities are arranged on the inner surface of the outer ring, and sealing columns are arranged inside the sealing cavities.

5. A high-pressure retracting elastomeric seal spacer according to claim 4 wherein: the sealing cavities are distributed on the inner surface of the outer ring in a circumferential array, and the sealing columns are made of water-absorbing expansion resin.

6. A high-pressure retracting elastomeric seal gasket according to claim 1 wherein: and corrosion-resistant zinc coatings are arranged on the outer surface of the outer ring and the inner surface of the inner ring.