CN212839948U - Octagonal gasket - Google Patents

Abstract

The utility model relates to the technical field of sealing gaskets, and aims to provide an octagonal gasket, which comprises a ring gasket body and a protective shell covering the ring gasket body, wherein the protective shell comprises an outer shell and an inner shell which are made of elastic materials, and the outer shell and the inner shell are both annular; an annular accommodating groove is formed in the inner circumferential wall of the shell, and the ring pad body is clamped and matched in the accommodating groove; the inner shell is clamped and matched on the inner circumferential wall of the outer shell and seals the opening of the accommodating groove; the utility model discloses a protective housing prevents that the surface of ring pad body from producing wearing and tearing before the installation including the cladding of ring pad body.

Description

Octagonal gasket

Technical Field

The utility model relates to a sealed technical field that fills up, in particular to octagonal gasket.

Background

The flange gasket is used for connecting the flanges of the pipeline and is a sealing element between two flanges. Media, pressure and temperature directly affect the choice of flange gaskets, while the octagonal gasket was originally sourced in the united states, first used in the boiler sector in the 20 th century and then received particular attention in the oil production and refining industries, and as the temperature and pressure of steam power plants increase, the gasket is commonly applied to high temperature and high pressure steam, high temperature and high pressure valve covers, and the like.

In the prior art, chinese patent document No. CN207661135U discloses an octagonal metal ring gasket, which includes a body, wherein the upper and lower end faces of the body are processed into concentric gear rings, and the gear rings are distributed over the whole end face.

The above prior art solutions have the following drawbacks: the sealing is formed by the fact that the inclined wall of the octagonal cushion is abutted to the inclined inner wall in the trapezoidal groove of the flange, once the inclined wall of the octagonal cushion is abraded, the sealing performance is easily reduced, and the octagonal cushion is exposed in air before being installed, so that the inclined wall is easily scratched by foreign matters.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims at providing an octagonal gasket, including the protective housing with the cladding of ring pad body, prevent that the surface of ring pad body from producing wearing and tearing before the installation.

The above technical purpose of the present invention can be achieved by the following technical solutions:

an octagonal gasket comprises a ring gasket body and a protective shell, wherein the protective shell covers the ring gasket body, and comprises an outer shell and an inner shell which are made of elastic materials, and the outer shell and the inner shell are both annular; an annular accommodating groove is formed in the inner circumferential wall of the shell, and the ring pad body is clamped and matched in the accommodating groove; the inner shell is clamped and matched on the inner circumferential wall of the outer shell and seals the opening of the accommodating groove.

Through adopting above-mentioned technical scheme, through the mating reaction of inner shell and shell, form complete protective housing and including the body cladding of ring packing, prevent that the surface of ring packing body from producing wearing and tearing before the installation, the inner shell plays the effect of the assembly of being convenient for with the cooperation of shell joint.

The utility model discloses further set up to: two sides of the opening of the containing groove are provided with annular inclined ends along the circumferential direction, and the two inclined ends extend towards the inner side of the shell and are inclined along the mutually approaching direction; two ends of the inner shell are both provided with annular matching ends along the circumferential direction, and the two matching ends extend along the mutually distant direction and incline towards the outer side of the inner shell; the angled end abuts an adjacent mating end.

Through adopting above-mentioned technical scheme, the setting of slope end and cooperation end makes inner shell and shell assembly accomplish back both relatively fixed, plays the fixed action.

The utility model discloses further set up to: the slope is served and is provided with along circumference and be annular snap ring, the cooperation is served and has been seted up along circumference and be annular draw-in groove, snap ring and draw-in groove grafting cooperation.

Through adopting above-mentioned technical scheme, the snap ring plays the anticreep effect with setting up of draw-in groove, prevents that the inner shell from breaking away from the shell.

The utility model discloses further set up to: the inner wall of the clamping groove is circumferentially provided with a circle of sealing ring.

Through adopting above-mentioned technical scheme, the airtight effect of sealing washer prevents that external dust from entering into in the storage tank.

The utility model discloses further set up to: an annular first framework is arranged between the inner circumferential side wall and the outer circumferential side wall in the shell along the circumferential direction, and the first framework and the shell share the same axial lead.

Through adopting above-mentioned technical scheme, first skeleton is used for improving the structural strength of protective housing, prevents that the ring pad body including the cladding from producing deformation when the protective housing receives radial packing force.

The utility model discloses further set up to: and an annular second framework is arranged between the inner circumferential side wall and the outer circumferential side wall in the inner shell along the circumferential direction, and the second framework and the inner shell have the same axial lead.

Through adopting above-mentioned technical scheme, the structural strength of inner shell is strengthened to the second skeleton, prevents that the inner shell from producing deformation and coming off from the shell.

The utility model discloses further set up to: and a protective layer is arranged on the inner wall of the accommodating groove.

Through adopting above-mentioned technical scheme, the protective layer is the silica gel layer, provides the buffering, prevents that the ring pad body from receiving to collide with.

The utility model discloses further set up to: the outer circumferential wall of the shell is provided with a hanging block, and the hanging block is provided with a hanging hole.

Through adopting above-mentioned technical scheme, the setting of hanging hole plays the effect of being convenient for hang the protective housing.

To sum up, the beneficial effects of the utility model are that:

through the mating reaction of inner shell and shell, form complete protective housing and including the body cladding of ring packing, prevent that the surface of ring packing body from producing wearing and tearing before the installation, the inner shell plays the effect of the assembly of being convenient for with the cooperation of shell joint.

Drawings

Fig. 1 is a schematic cross-sectional view of the present invention;

fig. 2 is an enlarged schematic view at a in fig. 1.

Reference numerals: 1. a ring pad body; 2. a protective shell; 3. a housing; 31. a containing groove; 32. an angled end; 33. a snap ring; 4. an inner shell; 41. a mating end; 411. a card slot; 5. hanging blocks; 51. hanging holes; 6. a first skeleton; 7. a second skeleton; 8. a protective layer; 9. and (5) sealing rings.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The embodiment discloses an octagonal gasket, as shown in fig. 1 and 2, including ring pad body 1, still include the protective housing 2 including the cladding of ring pad body 1, protective housing 2 includes shell 3 and inner shell 4 made by elastic material, and shell 3 and inner shell 4 all are cyclic annularly, and fixedly connected with is convenient for hang hanging 5 of protective housing 2 on the outer periphery wall of shell 3, has seted up hanging hole 51 on hanging 5. An annular first framework 6 is fixedly embedded between the inner circumferential side wall and the outer circumferential side wall in the shell 3 along the circumferential direction, and the first framework 6 and the shell 3 have the same axial lead; an annular second framework 7 is fixedly embedded between the inner circumferential side wall and the outer circumferential side wall in the inner shell 4 along the circumferential direction, the second framework 7 and the inner shell 4 have the same axial line, and the first framework 6 and the second framework 7 cooperate to strengthen the structural strength of the protective shell 2.

As shown in fig. 1 and 2, a ring-shaped receiving groove 31 is integrally formed on the inner circumferential wall of the housing 3, and the ring pad body 1 is snap-fitted into the receiving groove 31; inner shell 4 joint cooperation is in the interior circumference wall of shell 3 and seals the opening of storage tank 31, and the fixed adhesion has the protective layer 8 of one deck protection ring pad body 1 surface on the inner wall of storage tank 31, and protective layer 8 is soft silica gel layer. Both sides of the opening of the accommodating groove 31 are integrally formed with annular inclined ends 32 along the circumferential direction, and the two inclined ends 32 extend towards the inner side of the housing 3 and are inclined along the mutually approaching direction; both ends of the inner shell 4 are integrally formed with annular mating ends 41 along the circumferential direction, and the two mating ends 41 extend along the mutual distant direction and incline towards the outer side of the inner shell 4; the angled end 32 abuts the adjacent mating end 41. The inclined end 32 is provided with an annular clamping ring 33 along the circumferential direction, the mating end 41 is provided with an annular clamping groove 411 along the circumferential direction, the clamping ring 33 is in inserting fit with the clamping groove 411, and the bottom of the clamping groove 411 is fixedly connected with a circle of sealing ring 9 along the circumferential direction.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims (8)

1. The utility model provides an octagonal gasket, includes ring pad body (1), its characterized in that: the protective shell (2) is covered in the ring pad body (1), the protective shell (2) comprises an outer shell (3) and an inner shell (4) which are made of elastic materials, and the outer shell (3) and the inner shell (4) are both annular; an annular accommodating groove (31) is formed in the inner circumferential wall of the shell (3), and the ring pad body (1) is clamped and matched in the accommodating groove (31); the inner shell (4) is in clamping fit with the inner circumferential wall of the outer shell (3) and seals the opening of the accommodating groove (31).

2. The octagonal gasket of claim 1, wherein: two sides of the opening of the containing groove (31) are respectively provided with an annular inclined end (32) along the circumferential direction, and the two inclined ends (32) extend towards the inner side of the shell (3) and are inclined along the mutually approaching direction; two ends of the inner shell (4) are respectively provided with an annular matching end (41) along the circumferential direction, and the two matching ends (41) extend along the mutually-away direction and incline towards the outer side of the inner shell (4); the angled end (32) abuts an adjacent mating end (41).

3. The octagonal gasket of claim 2, wherein: be provided with along circumference on slope end (32) and be annular snap ring (33), along circumference on cooperation end (41) seted up and be annular draw-in groove (411), snap ring (33) and draw-in groove (411) grafting cooperation.

4. The octagonal gasket of claim 3, wherein: the inner wall of the clamping groove (411) is provided with a circle of sealing ring (9) along the circumferential direction.

5. The octagonal gasket of claim 1, wherein: and an annular first framework (6) is arranged between the inner circumferential side wall and the outer circumferential side wall in the shell (3) along the circumferential direction, and the first framework (6) and the shell (3) share the same axial lead.

6. The octagonal gasket of claim 1, wherein: and an annular second framework (7) is arranged between the inner circumferential side wall and the outer circumferential side wall in the inner shell (4) along the circumferential direction, and the second framework (7) and the inner shell (4) share the same axial lead.

7. The octagonal gasket of claim 1, wherein: the inner wall of the containing groove (31) is provided with a protective layer (8).

8. The octagonal gasket of claim 1, wherein: the outer circumferential wall of the shell (3) is provided with a hanging block (5), and the hanging block (5) is provided with a hanging hole (51).

Images