CN216843084U

CN216843084U - Cladding type gasket with good rebound resilience

Info

Publication number: CN216843084U
Application number: CN202220383074.8U
Authority: CN
Inventors: 张伟波; 李小泉
Original assignee: Shaoxing Xinjia Sealing Products Co ltd
Current assignee: Shaoxing Xinjia Sealing Products Co ltd
Priority date: 2022-02-23
Filing date: 2022-02-23
Publication date: 2022-06-28
Anticipated expiration: 2032-02-23

Abstract

The utility model belongs to the technical field of the technique of blue seal gasket and specifically relates to a cladding formula gasket that resilience is good is related to, including the gasket main part, the gasket main part is cyclic annular, the annular storage tank has on the cyclic annular face of at least one side of gasket main part, be equipped with the circlip in the annular storage tank, gasket main part cover is equipped with and is used for the elasticity coating shell of contradicting on the circlip. The present application has the following effects: when installing to ring flange department, the ring flange of both sides will be to the packing force of elasticity cladding shell application, has the gasket main part in inside to do the support, and elasticity cladding shell will be adapted to the clearance between the ring flange, and simultaneously at the in-process that compresses tightly, the circlip will also be compressed, and when the distance between the ring flange changes, the circlip can expand outward and make elasticity cladding shell still keep sealed effect, and elasticity is good.

Description

Cladding type gasket with good rebound resilience

Technical Field

The application relates to the technical field of blue seal gasket, in particular to a cladding gasket with good rebound resilience.

Background

The flange sealing gasket is a product used for sealing a flange joint in the field of industrial pipelines, and is widely applied to the fields of chemical industry, petrifaction, natural gas, ships, power plants and the like. When the medium in the industrial pipeline has strong corrosivity, polytetrafluoroethylene or special metal alloy is often adopted as a sealing material, and a pure polytetrafluoroethylene material has low resilience due to self defects, so that after the industrial pipeline is used for a period of time, when the distance between the flange joints at two sides changes due to the change of working conditions, leakage can occur.

SUMMERY OF THE UTILITY MODEL

In order to improve the resilience of gasket, this application provides the cladding formula gasket that the resilience is good.

The application provides a cladding formula gasket that resilience is good adopts following technical scheme: the utility model provides a cladding formula gasket that resilience is good, includes the gasket main part, the gasket main part is cyclic annular, the annular storage tank has on the cyclic annular face of at least one side of gasket main part, be equipped with the ring-shaped spring circle in the annular storage tank, gasket main part cover is equipped with the elasticity package shell that is used for contradicting on the ring-shaped spring circle.

Through adopting above-mentioned technical scheme, when installing to ring flange department, the ring flange of both sides will apply the packing force to the elasticity cladding shell, has the gasket main part in inside and does the support, and elasticity cladding shell will adapt to the clearance between the ring flange, and simultaneously at the in-process that compresses tightly, the circlip will also be compressed, and when the distance between the ring flange changes, the circlip can expand outward and make the elasticity cladding shell still keep sealed effect, and elasticity is good.

Preferably, at least one side of the gasket main body is provided with a plurality of concentric ring grooves, and the gasket main body between every two adjacent ring grooves forms a contact ring which is used for being abutted against the inner wall of the elastic coating shell.

Through adopting above-mentioned technical scheme, when fixed, when the ring flange presss from both sides tight gasket main part, elasticity cladding shell will be impressed to the annular in, and the conflict ring can realize combining together of elasticity cladding shell and gasket main part, reduces holistic creep, improves life.

Preferably, the annular surfaces of the two sides of the gasket main body are provided with the annular accommodating grooves, the cross sections of the annular accommodating grooves are in a right trapezoid shape, and the annular spring rings are abutted to the inclined edges of the annular accommodating grooves.

Through adopting above-mentioned technical scheme, when installation circlip, after embedding to the annular storage tank, contradict at the hypotenuse downside, when the installation, the hypotenuse can play spacing effect, reduces the possibility that circlip drops.

Preferably, the section of the ring-shaped spring ring is circular, and the ring-shaped spring ring is flush with the side face of the gasket main body.

Through adopting above-mentioned technical scheme, at the in-process that compresses tightly, can make the circlip deformation simultaneously when the annular of impressing when elasticity cladding shell deformation, and when the installation gasket body, can not make the circlip receive the influence.

Preferably, the gasket main body has a thickness of amm, and the annular accommodating groove has a depth of bmm;

when a-2b is larger than or equal to 1mm, the projections of the annular containing grooves on the two sides in the direction along the central axis of the gasket main body are overlapped;

when a is more than or equal to 0 and less than or equal to 2b and less than 1mm, the projections of the annular containing grooves on the two sides in the direction along the central axis of the gasket main body are not overlapped.

Through adopting above-mentioned technical scheme, under the condition that thickness allows, two ring spring from top to bottom can form the sealed effect of conflict in same direction, but if under the less condition of thickness, can only crisscross the setting.

Preferably, the elastic coating shell comprises a first part for covering the annular surfaces on two sides of the gasket main body and a second part located on the inner edge side of the gasket main body, and two sides of the second part are respectively connected with the first part in an integral manner.

Through adopting above-mentioned technical scheme, the elasticity cladding shell blocks the medium at gasket main part inboard, and first portion will be used for sealing the ring flange of both sides.

Preferably, the two first portions have a gap on a side thereof away from the second portion, into which the gasket main body is fitted.

By adopting the technical scheme, when the gasket is installed, the gasket main body is inserted into the elastic coating shell from the gap of the elastic coating shell, and the integral sealing effect cannot be influenced.

Preferably, the cross section of the abutting ring is toothed.

Through adopting above-mentioned technical scheme, at the tight in-process of ring flange support, the upside of support ring can apply great support tight power to the ring flange through dentate upper end, can form the annular limit of multichannel sealing like this, and sealed effect is better.

Preferably, the elastic coating shell is made of polytetrafluoroethylene.

Preferably, a transition fillet is arranged between the first part and the second part and on the inner wall of the elastic coating shell.

Through adopting above-mentioned technical scheme, the cracked risk of elasticity cladding shell when can reducing the gasket equipment.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when the gasket is pressed by the flange plate, the elastic coating shell can enable the annular spring ring to deform, so that in the using process, the annular spring ring can keep the elastic coating shell to be abutted against the surface of the flange plate, the rebound resilience is good, and a good sealing effect is kept;

2. during the compression process, the elastic coating shell is embedded into the ring groove, so that the possibility of creep deformation of the elastic coating shell is reduced;

3. the conflict ring of cockscomb structure can make elasticity cladding shell and flange quotation can form the sealed border of multichannel, promotes sealed effect.

Drawings

FIG. 1 is a cross-sectional view of the present application;

fig. 2 is a cross-sectional view of the annular pocket groove with the hypotenuse and the square edge interchanged.

Description of reference numerals: 100. a gasket body; 110. a ring groove; 111. a contact ring; 120. an annular accommodating groove; 121. an annular spring ring; 130. an elastic coating shell; 131. a first part; 132. a second section; 133. and (4) transition fillets.

Detailed Description

The present application is described in further detail below with reference to the attached drawings.

The embodiment of the present application discloses a cladding gasket with good resilience, and in the present embodiment, referring to fig. 1, the cladding gasket includes a gasket main body 100, and the gasket main body 100 is made of 304 stainless steel and is annular in shape.

The gasket body 100 has ring grooves 110 on both annular surfaces, and the ring grooves 110 on each side are symmetrically arranged. Taking one side as an illustration, each side of the ring-shaped surface has a plurality of concentric ring grooves 110, and the gasket body 100 between two adjacent ring grooves 110 forms a contact ring 111, in this embodiment, the contact ring 111 has a tooth-shaped cross section with its tip facing upward.

The gasket body 100 has a ring-shaped receiving groove 120 on at least one side of the ring-shaped surface, in this embodiment, the ring-shaped receiving groove 120 is formed on both sides, a ring-shaped spring ring 121 is disposed in the ring-shaped receiving groove 120, and the ring-shaped spring ring 121 is made of 316 stainless steel. The section of the ring-shaped spring ring 121 is circular, and after the ring-shaped spring ring 121 is embedded, the ring-shaped spring ring 121 is flush with the side surface of the gasket body 100. The cross-section of ring-shaped containing groove 120 is right trapezoid, ring-shaped containing groove 120's right-angle side is close to gasket main body 100 inboardly in this embodiment, the hypotenuse is close to gasket main body 100 outside, circlip 121 contradicts in ring-shaped containing groove 120's hypotenuse department, circlip 121 will have partly to inlay and establish in ring-shaped containing groove 120, it is spacing to realize, ring-shaped containing groove 120's width is slightly big simultaneously with circlip 121's diameter, follow-up circlip 121 that can be convenient for carries out deformation.

In another embodiment, referring to fig. 2, the right-angle side of the ring-shaped receiving groove 120 and the inclined side can be interchanged, so that the ring-shaped spring ring 121 is elastically folded on the inner wall of the ring-shaped receiving groove 120 close to the inner side and is located on the lower side of the inclined side, the fixing effect is good, and subsequent deformation is not affected.

Regarding the positions of the two annular receiving grooves 120, depending on the thickness of the gasket main body 100 and the depth of the annular receiving groove 120, the thickness of the gasket main body 100 is amm, and the depth of the annular receiving groove 120 is bmm; when a-2b is larger than or equal to 1mm, the projections of the annular accommodating grooves 120 at the two sides in the direction along the central axis of the gasket main body 100 are superposed; when a is more than or equal to 0 and less than or equal to 2b and less than 1mm, the projections of the annular accommodating grooves 120 on the two sides in the direction along the central axis of the gasket main body 100 are not overlapped. In this embodiment, a-2b =0, that is, the depth of the annular receiving groove 120 is half of the gasket main body 100, so the two annular receiving grooves 120 are not concentrically disposed.

The gasket body 100 is sleeved with an elastic covering shell 130 for abutting against the circlip 121, and the elastic covering shell 130 is annular as a whole. In this embodiment, the teflon tubing is turned, so that the elastic covering shell 130 has good deformability and corrosion resistance. The elastic covering shell 130 includes a first portion 131 for covering the annular surface of the two sides of the gasket main body 100, and a second portion 132 located at the inner edge side of the gasket main body 100, wherein two sides of the second portion 132 are respectively connected with the two first portions 131 integrally. During processing, the inner corner of the elastic covering shell 130, i.e. the junction between the first portion 131 and the second portion 132, has a transition fillet 133, and the outer corner of the elastic covering shell 130 is also provided with a transition fillet 133. And one side of the two first portions 131 far away from the second portion 132 is provided with a gap for the gasket main body 100 to be embedded in, so that the installation is convenient.

The implementation principle of the embodiment of the application is as follows: first, when the gasket is installed, the ring-shaped spring ring 121 is inserted into the ring-shaped receiving groove 120 to be inserted into the inclined edge, and then the gasket body is inserted into the gap between the two first portions 131 until the outer edge of the gasket body 100 coincides with the outer edge of the elastic covering shell 130.

Then, the fixing is performed, when the flanges on the two sides are pressed tightly, on one hand, the elastic coating shell 130 is embedded into the ring groove 110, the gasket body limits the elastic coating shell 130, the creep cold flow effect of polytetrafluoroethylene is reduced, and meanwhile, the abutting ring 111 forms a plurality of abutting sealing edges abutting against the flanges. On the other hand, at the in-process that compresses tightly, deformation will take place for circlip 121, will be in the annular storage tank 120 deformation for oval for circlip 121 has along axial outer expanding force, and when the frequent alternating operating mode of pressure appeared, flange quotation and gasket pretightning force diminish, circlip 121's resilience performance for the pretightning force of gasket and flange quotation remains stable, prevents to take place to leak.

The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited by the embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A cladding gasket that resilience is good, includes gasket main part (100), its characterized in that: gasket main part (100) are cyclic annular, have annular storage tank (120) on the cyclic annular face of at least one side of gasket main part (100), be equipped with ring spring circle (121) in annular storage tank (120), gasket main part (100) cover is equipped with elasticity package shell (130) that are used for contradicting on ring spring circle (121).

2. The coated gasket with good resilience as claimed in claim 1, wherein: the gasket body (100) is provided with a plurality of concentric ring grooves (110) on at least one side annular surface, and the gasket body (100) between two adjacent ring grooves (110) forms a contact ring (111) which is used for abutting against the inner wall of the elastic coating shell (130).

3. The coated gasket as claimed in claim 2, wherein: the annular surfaces on two sides of the gasket main body (100) are provided with the annular accommodating groove (120), the section of the annular accommodating groove (120) is in a right trapezoid shape, and the annular spring ring (121) is abutted to the inclined edge of the annular accommodating groove (120).

4. A coated resilient gasket as claimed in claim 2 or claim 3, wherein: the section of the annular spring ring (121) is circular, and the annular spring ring (121) is flush with the side face of the gasket main body (100).

5. The coated gasket with good resilience as claimed in claim 1, wherein: the gasket main body (100) has a thickness of amm, and the annular accommodating groove (120) has a depth of bmm;

when the a-2b is larger than or equal to 1mm, the projections of the annular accommodating grooves (120) on the two sides in the direction along the central axis of the gasket main body (100) are overlapped;

when a is more than or equal to 0 and less than or equal to 2b and less than 1mm, the projections of the annular accommodating grooves (120) on the two sides in the direction along the central axis of the gasket main body (100) are not coincident.

6. The coated gasket as claimed in claim 4, wherein: elasticity cladding shell (130) are including being used for covering first portion (131) on gasket main part (100) both sides anchor ring, be located gasket main part (100) interior border side second portion (132), the both sides of second portion (132) respectively with two first portion (131) body coupling.

7. The coated gasket with good resilience as claimed in claim 6, wherein: the sides of the two first portions (131) far away from the second portion (132) are provided with gaps for the gasket main body (100) to be embedded in.

8. The coated gasket as claimed in claim 2 or 7, wherein: the cross section of the contact ring (111) is toothed.

9. The coated gasket with good resilience as claimed in claim 1, wherein: the elastic covering shell (130) is made of polytetrafluoroethylene.

10. The coated gasket as claimed in claim 7, wherein: the first portion (131) and the second portion (132) have a transition radius (133) between them and on the inner wall of the elastic coating shell (130).