CN210890076U

CN210890076U - Polytetrafluoroethylene sealing gasket

Info

Publication number: CN210890076U
Application number: CN201921807560.2U
Authority: CN
Inventors: 刘飞
Original assignee: Yangzhong City Yonggong Seal Co ltd
Current assignee: Yangzhong City Yonggong Seal Co ltd
Priority date: 2019-10-25
Filing date: 2019-10-25
Publication date: 2020-06-30
Anticipated expiration: 2029-10-25

Abstract

The utility model discloses a polytetrafluoroethylene sealing gasket, which comprises a gasket body, wherein a limiting groove is arranged at the outer side of the middle part of the gasket body, a sealing ring is connected in a clamping way in the limiting groove, first ring grooves are arranged at the upper end and the lower end of the gasket body, a spring is fixedly connected in the first ring groove and is distributed at equal intervals, and an outer movable gasket is fixedly connected at the outer side of the spring and the outer side of the other spring, the utility model is provided with the limiting groove and the sealing ring, thereby improving the sealing property between the gasket and the inner wall of a pipeline, improving the sealing effect of the gasket, and the limiting groove and the sealing ring are designed to be detachable, so that the sealing ring can be replaced in time after being worn, improving the practicability and the service life, when the distance between two connecting pieces is larger than the thickness of the gasket body, the outer movable gasket is pushed outwards under the action of, the quantity of the used gaskets is reduced, the installation is more convenient, and the firmness of the gasket body is further enhanced.

Description

Polytetrafluoroethylene sealing gasket

Technical Field

The utility model belongs to the technical field of the gasket, concretely relates to polytetrafluoroethylene seal gasket.

Background

The sealing gasket is used for sealing connection between pipelines and sealing connection between machine parts of machine equipment, the gasket seal occupies an important position in modern industrial enterprises, and the quality of the seal is directly related to the continuity of production, the safety of property, energy conservation, environmental protection and physical and mental health of people, so the development of the gasket is more and more valued by people.

With the rise of modern industry, especially modern petroleum, chemical industry, atomic energy industry and large power stations, pressure vessels develop towards high temperature, high pressure, high vacuum, deep cooling, large scale and multiple series directions, new requirements on gasket sealing are continuously provided, polytetrafluoroethylene gaskets are widely applied due to the characteristics of acid resistance, alkali resistance, high temperature resistance and various organic solvents resistance, but the existing sealing gaskets have the defects that the gaskets cannot be completely attached to the inner wall of a pipeline, the sealing performance is poor, when the thickness of the gaskets is insufficient, gaskets need to be additionally added, the gaskets cannot be completely attached to the gaskets, the sealing effect is influenced, and the use is inconvenient.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a polytetrafluoroethylene seal gasket to solve current gasket and pipe inner wall and can not laminate completely, the leakproofness is poor, and when gasket thickness is not enough, need add the gasket in addition, can not laminate completely between gasket and gasket, influences sealed effect, and uses inconvenient problem.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a polytetrafluoroethylene seal gasket, includes the gasket body, the spacing groove has been seted up in the gasket body middle part outside, spacing inslot joint is connected with the sealing washer, first ring channel has all been seted up at both ends about the gasket body, the spring that fixedly connected with annular equidistance distributes in the first ring channel, spring and another spring outside fixedly connected with outside movable gasket.

Preferably, a second annular groove is formed in the outer side of the outer movable gasket, the second annular groove and the outer movable gasket are of concentric circle structures, an annular magnet is fixedly connected in the second annular groove, and the outer surface of the annular magnet and the outer surface of the outer movable gasket are parallel and level to each other.

Preferably, the gasket body is made of polytetrafluoroethylene.

Preferably, the sealing ring and the gasket body are of concentric circle structures, and the diameter of the sealing ring is larger than that of the gasket body.

Preferably, the sealing ring is made of nitrile rubber.

Preferably, the sum of the compressed height of the spring and the height of the outer movable gasket is equal to the depth of the first annular groove, and the outer movable gasket is in clamping connection with the first annular groove.

Compared with the prior art, the utility model, following beneficial effect has:

(1) the utility model discloses set up spacing groove and sealing washer, improved the leakproofness between gasket and pipeline inner wall, improved the sealed effect of gasket, and spacing groove and sealing washer are the detachable design, after the sealing washer wearing and tearing, can in time change, improve practicality and life.

(2) The utility model discloses set up spring and outside movable gasket, when the distance between two connecting pieces is greater than the thickness of gasket body, under the effect of spring, outwards promote outside movable gasket to enlarge the thickness of gasket body, reduce the gasket quantity that uses, it is more convenient to install.

(3) The utility model discloses set up ring magnet, when sealing up in metal pipeline, through ring magnet's magnetic field and metal inter attraction, further strengthened the fastness of gasket body.

Drawings

FIG. 1 is a view showing a structure of the present invention;

fig. 2 is a front view of the present invention;

fig. 3 is a top view of the present invention;

fig. 4 is a sectional view of the present invention.

In the figure: 1. a gasket body; 2. a limiting groove; 3. a seal ring; 4. a first annular groove; 5. a spring; 6. an outer removable spacer; 7. a second annular groove; 8. a ring magnet.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides the following technical solutions: the utility model provides a polytetrafluoroethylene seal gasket, includes gasket body 1, and spacing groove 2 has been seted up in the 1 middle part outside of gasket body, and spacing inslot 2 internal clamping is connected with sealing washer 3, and first ring channel 4 has all been seted up at both ends about gasket body 1, and fixedly connected with annular equidistance distribution's spring 5 in the first ring channel 4, spring 5 and another spring 5 outside fixedly connected with outside movable gasket 6.

In order to guarantee the smoothness of the surface of the outer movable gasket 6 and strengthen the fixation of the gasket body 1 through the magnetic field of the annular magnet 8, in the embodiment, preferably, the outer side of the outer movable gasket 6 is provided with a second annular groove 7, the second annular groove 7 and the outer movable gasket 6 are of a concentric circle structure, the annular magnet 8 is fixedly connected in the second annular groove 7, and the outer surface of the annular magnet 8 is flush with the outer surface of the outer movable gasket 6.

In order to improve the acid and alkali resistance and the sealing performance of the gasket body 1 and ensure that the gasket body 1 has excellent chemical stability, corrosion resistance, electrical insulation and aging resistance, in this embodiment, the gasket body 1 is preferably made of polytetrafluoroethylene.

In order to ensure that the sealing ring 3 is attached to the inner wall of the pipeline, and to improve the sealing performance of the gasket body 1, in this embodiment, it is preferable that the sealing ring 3 and the gasket body 1 are of a concentric structure, and the diameter of the sealing ring 3 is greater than that of the gasket body 1.

In order to prolong the service life of the seal ring 3 and ensure that the seal ring 3 has high wear resistance and heat resistance, in this embodiment, the material of the seal ring 3 is preferably nitrile rubber.

In order to ensure that the compressed spring 5 and the outer movable gasket 6 do not affect the normal use of the gasket body 1, in the present embodiment, the sum of the compressed height of the spring 5 and the height of the outer movable gasket 6 is preferably equal to the depth of the first annular groove 4, and the outer movable gasket 6 is in snap connection with the first annular groove 4.

The utility model discloses a theory of operation and use flow: when the gasket is used, the sealing ring 3 is taken out to be sleeved in the limiting groove 2 on the outer side of the gasket body 1, then the gasket body 1 is placed in the first pipeline, the sealing ring 3 on the outer side of the gasket body 1 is attached to the inner wall of the first pipeline, then the gasket body 1 is moved downwards, the sealing ring 3 generates friction force with the inner wall of the first pipeline and moves downwards, then the second pipeline is taken out and is stuffed in the first pipeline, the second pipeline downwards extrudes the outer movable gasket 6, the outer movable gasket 6 downwards extrudes the spring 5 until the second pipeline can not move, the outer movable gaskets 6 on two ends are pushed outwards under the action of the rebounding force of the spring 5, so that the sealing performance of the outer movable gasket 6 with the first pipeline and the second pipeline is ensured, when the distance between the first pipeline and the second pipeline is equal to the thickness of the gasket body 1, the outer movable gasket 6 is completely contained in the first annular groove 4, under the action of the annular magnet 8 in the second annular groove 7, the firmness of the connection between the gasket body 1 and the first pipeline and the second pipeline is further enhanced.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A polytetrafluoroethylene sealing gasket, including gasket body (1), its characterized in that: spacing groove (2) have been seted up in gasket body (1) middle part outside, the joint is connected with sealing washer (3) in spacing groove (2), first ring channel (4) have all been seted up at both ends about gasket body (1), spring (5) that fixedly connected with annular equidistance distributes in first ring channel (4), spring (5) and another spring (5) outside fixedly connected with outside movable gasket (6).

2. A polytetrafluoroethylene gasket seal according to claim 1, wherein: second ring channel (7) have been seted up in outside loose gasket (6) outside, second ring channel (7) and outside loose gasket (6) are concentric circle structure, fixedly connected with annular magnet (8) in second ring channel (7), the surface of annular magnet (8) and the surface parallel and level each other of outside loose gasket (6).

3. A polytetrafluoroethylene gasket seal according to claim 1, wherein: the gasket body (1) is made of polytetrafluoroethylene.

4. A polytetrafluoroethylene gasket seal according to claim 1, wherein: the sealing ring (3) and the gasket body (1) are of concentric circle structures, and the diameter of the sealing ring (3) is larger than that of the gasket body (1).

5. A polytetrafluoroethylene gasket seal according to claim 1, wherein: the sealing ring (3) is made of nitrile rubber.

6. A polytetrafluoroethylene gasket seal according to claim 1, wherein: the sum of the compressed height of the spring (5) and the height of the outer movable gasket (6) is equal to the depth of the first annular groove (4), and the outer movable gasket (6) is connected with the first annular groove (4) in a clamping manner.