CN211117572U

CN211117572U - Polytetrafluoroethylene sealing gasket

Info

Publication number: CN211117572U
Application number: CN201921922814.5U
Authority: CN
Inventors: 李明
Original assignee: Tianjin Jianxin Jinshi Petrochemical Equipment Parts Co ltd
Current assignee: Tianjin Jianxin Jinshi Petrochemical Equipment Parts Co ltd
Priority date: 2019-11-08
Filing date: 2019-11-08
Publication date: 2020-07-28
Anticipated expiration: 2029-11-08

Abstract

The utility model relates to a seal gasket technical field just discloses a polytetrafluoroethylene seal gasket, including the gasket body, the hole has been seted up at the middle part of gasket body, and sets up the bolt hole that is located the hole outside on the gasket body. This polytetrafluoroethylene seal gasket, when mechanical vibration appears, constantly extrude and the pine takes off between wedge and the trapezoid block, thereby make the continuous compression of trapezoid block and lax spring, thereby play the absorbing effect of buffering, make seal gasket difficult impaired, seal gasket's life has been increased, and at the vibration in-process, remain inseparable laminating state between wedge and the trapezoid block throughout, difficult emergence is leaked, and simultaneously, when the bolt that is used for compressing tightly seal gasket takes place the small amplitude not hard up because of the vibration, elasticity when utilizing spring compression can drive and keep pasting tight sealed state between trapezoid block and the wedge block, and then can avoid the bolt small amplitude not hard up problem emergence that makes seal gasket lose the sealing ability often.

Description

Polytetrafluoroethylene sealing gasket

Technical Field

The utility model relates to a seal gasket technical field specifically is a polytetrafluoroethylene seal gasket.

Background

The sealing gasket is a sealing spare part used for machines, equipment and pipelines as long as the sealing spare part is used in places with fluid, and uses the materials with the sealing function of the inside and the outside, the sealing gasket is made of metal or nonmetal plate-shaped materials through processes of cutting, stamping, cutting and the like and is used for sealing connection between pipelines and sealing connection between machine parts and machine parts, the sealing gasket can be divided into metal sealing gaskets and nonmetal sealing gaskets according to the materials, the metal sealing gaskets comprise copper gaskets, stainless steel gaskets, iron gaskets, aluminum gaskets and the like, and the nonmetal sealing gaskets comprise asbestos gaskets, non-asbestos gaskets, paper gaskets, rubber gaskets and the like.

However, current seal gasket does not have the shock attenuation effect usually, and when mechanical vibration, can form the extrusion force to seal gasket, leads to seal gasket to take place the deformation, receives the damage, has reduced seal gasket's life, and because mechanical vibration, probably leads to the bolt to take place to become flexible, and then leads to seal gasket's degree of compression constantly to descend and appear leaking.

SUMMERY OF THE UTILITY MODEL

The utility model provides a not enough to prior art, the utility model provides a polytetrafluoroethylene seal gasket possesses the shock attenuation, improves the advantage of leakproofness, has solved current seal gasket and has not had the shock attenuation effect usually, when mechanical vibration, can form the extrusion force to seal gasket, leads to seal gasket to take place deformation, receives the damage, has reduced seal gasket's life, and because mechanical vibration, probably lead to the bolt to take place not hard up, and then lead to seal gasket's the degree of compaction constantly to descend and the problem of appearing leaking.

The utility model provides a following technical scheme: the utility model provides a polytetrafluoroethylene seal gasket, includes the gasket body, the hole has been seted up at the middle part of gasket body, and sets up the bolt hole that is located the hole outside on the gasket body, the inside ring spring that encircles in the bolt hole outlying that is equipped with of gasket body, and sets up the cavity that is located between bolt hole and the hole in the gasket body, the fixed cover in inside of gasket body is equipped with the telescopic link that is located the cavity outside, the one end movable sleeve of telescopic link is equipped with the spring, and the one end of telescopic link extends to the inside and the fixedly connected with trapezoidal piece of cavity, the middle part fixedly connected with dead lever of cavity inner chamber bottom, the top movable sleeve of dead lever is equipped with the wedge, the wedge groove with wedge looks adaptation is seted.

Preferably, the number of bolt holes is four, and four annular arrays of bolt holes are arranged on the periphery of the gasket body.

Preferably, the fixed end of the telescopic rod is fixed inside the gasket body, and the movable end of the telescopic rod is movably sleeved inside the cavity.

Preferably, one end of the spring is fixedly connected with the inner wall of the cavity, and the other end of the spring is fixedly connected with one side of the trapezoidal block.

Preferably, the trapezoid block is movably sleeved inside the cavity, and the inclined surface of the trapezoid block is movably connected with the inclined surface of the wedge block.

Preferably, the wedge block is movably sleeved in the wedge groove, and the wedge groove is communicated with the cavity.

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

1. the polytetrafluoroethylene sealing gasket is characterized in that through the matching of a wedge-shaped block, trapezoidal blocks positioned at two sides of the bottom of the wedge-shaped block, a telescopic rod for elastically fixing the trapezoidal blocks in a cavity and a spring, when mechanical vibration occurs, the wedge-shaped block and the trapezoid block are continuously extruded and loosened, so that the trapezoid block continuously compresses and relaxes the spring, thereby playing the role of buffering and shock absorption, leading the sealing gasket not to be easily damaged, prolonging the service life of the sealing gasket, in the vibration process, the wedge-shaped block and the trapezoid block are always kept in a close fit state, so that the leakage is not easy to occur, meanwhile, when the bolt for pressing the sealing gasket is loosened in a small range due to vibration, the elastic force generated when the spring is compressed can drive the trapezoidal block and the wedge block to keep a close sealing state, and then can avoid the bolt to become flexible in a small margin and make the problem of seal gasket lose the sealing ability take place.

2. This polytetrafluoroethylene seal gasket through encircleing at the peripheral annular spring of bolt hole, can improve the laminating degree and the compactness of bolt hole inner wall and bolt, reduces the bolt and takes place not hard up probability because of the circumstances such as vibration.

Drawings

FIG. 1 is a top view of the present invention;

fig. 2 is a side sectional view of the structure of the present invention.

In the figure: 1. a gasket body; 2. an inner bore; 3. bolt holes; 4. an annular spring; 5. a cavity; 6. a telescopic rod; 7. a spring; 8. a trapezoidal block; 9. fixing the rod; 10. a wedge block; 11. a wedge-shaped groove.

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. 1-2, a polytetrafluoroethylene sealing gasket comprises a gasket body 1, an inner hole 2 is formed in the middle of the gasket body 1, bolt holes 3 are formed in the gasket body 1 and located on the outer side of the inner hole 2, the number of the bolt holes 3 is four, four bolt holes 3 are annularly arrayed on the periphery of the gasket body 1, four bolt holes 3 are annularly arrayed on the gasket body 1, the gasket body 1 is convenient to position, fix and lock by using the four bolt holes 3, so that the gasket is convenient to mount, an annular spring 4 surrounding the periphery of the bolt holes 3 is arranged in the gasket body 1, the annular spring 4 surrounding the periphery of the bolt holes 3 and located in the gasket body 1 can improve the attaching degree and tightness of the inner wall of the bolt holes 3 and the bolt, reduce the probability of loosening of the bolt due to vibration and other conditions, and a cavity 5 located between the bolt holes 3 and the inner hole 2 is formed in the gasket body 1, the inner fixed sleeve of the gasket body 1 is provided with a telescopic rod 6 positioned outside the cavity 5, the fixed end of the telescopic rod 6 is fixed inside the gasket body 1, the movable end of the telescopic rod 6 is movably sleeved inside the cavity 5, one end of the telescopic rod 6 is movably sleeved with a spring 7, one end of the spring 7 is fixedly connected with the inner wall of the cavity 5, the other end of the spring 7 is fixedly connected with one side of a trapezoidal block 8, one end of the telescopic rod 6 extends into the cavity 5 and is fixedly connected with the trapezoidal block 8, the trapezoidal block 8 is movably sleeved inside the cavity 5, the inclined plane of the trapezoidal block 8 is movably connected with the inclined plane of the wedge block 10, the middle part of the bottom end of the inner cavity of the cavity 5 is fixedly connected with a fixed rod 9, the top of the fixed rod 9 is movably sleeved with a wedge block 10, the wedge block 10 is movably sleeved inside a wedge groove 11, the wedge groove 11 is communicated with the, the sealing gasket is characterized in that the wedge-shaped block 10, the trapezoid blocks 8 positioned on two sides of the bottom of the wedge-shaped block 10, and the telescopic rods 6 and the springs 7 which elastically fix the trapezoid blocks 8 in the cavity 5 are arranged, when mechanical vibration occurs, the wedge-shaped block 10 and the trapezoid blocks 8 are continuously extruded and loosened, so that the trapezoid blocks 8 are continuously compressed and loosened, the springs 7 are continuously compressed and loosened, a buffering and damping effect is achieved, the sealing gasket is not easily damaged, the service life of the sealing gasket is prolonged, in the vibration process, the trapezoid blocks 8 are continuously driven by the springs 7 to elastically stretch, so that the wedge-shaped block 10 and the trapezoid blocks 8 are always kept in a close fit state, leakage is not easily caused, meanwhile, when bolts for compressing the sealing gasket are loosened in a small amplitude due to vibration, and the wedge-shaped block 10 is displaced in a small amplitude, the elastic force generated when the springs 7 are compressed can drive the trapezoid blocks 8 and the wedge-, and then can avoid the bolt to become flexible in a small margin and make the problem of seal gasket lose the sealing ability take place.

The working principle is as follows: when the installation, along with the continuous compressing tightly of gasket body 1, this moment, trapezoidal piece 8 is constantly extruded to the bottom of wedge 10, thereby drive the continuous extrusion telescopic link 6 and the spring 7 of trapezoidal piece 8, make the expansion end shrink of telescopic link 6 inside its stiff end and compression spring 7, and then make one side of gasket body 1 and wedge 10 closely laminate with the inner wall of treating sealed object and form sealedly, then, in the use of seal gasket, when producing mechanical vibration, constantly extrude and the pine takes off between wedge 10 and the trapezoidal piece 8, thereby make the continuous compression and the relaxation spring 7 of trapezoidal piece 8, thereby play buffering absorbing effect.

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: the gasket comprises a gasket body (1), wherein an inner hole (2) is formed in the middle of the gasket body (1), a bolt hole (3) located on the outer side of the inner hole (2) is formed in the gasket body (1), an annular spring (4) surrounding the bolt hole (3) is arranged inside the gasket body (1), a cavity (5) located between the bolt hole (3) and the inner hole (2) is formed in the gasket body (1), a telescopic rod (6) located on the outer side of the cavity (5) is fixedly sleeved inside the gasket body (1), a spring (7) is movably sleeved at one end of the telescopic rod (6), one end of the telescopic rod (6) extends into the cavity (5) and is fixedly connected with a trapezoidal block (8), a fixing rod (9) is fixedly connected to the middle of the bottom end of the inner cavity of the cavity (5), and a wedge block (10) is movably sleeved, the top of the gasket body (1) is provided with a wedge-shaped groove (11) matched with the wedge-shaped block (10).

2. A polytetrafluoroethylene gasket seal according to claim 1, wherein: the number of the bolt holes (3) is four, and the four bolt holes (3) are annularly arrayed on the periphery of the gasket body (1).

3. A polytetrafluoroethylene gasket seal according to claim 1, wherein: the fixed end of the telescopic rod (6) is fixed in the gasket body (1), and the movable end of the telescopic rod (6) is movably sleeved in the cavity (5).

4. A polytetrafluoroethylene gasket seal according to claim 1, wherein: one end of the spring (7) is fixedly connected with the inner wall of the cavity (5), and the other end of the spring (7) is fixedly connected with one side of the trapezoidal block (8).

5. A polytetrafluoroethylene gasket seal according to claim 1, wherein: the trapezoid block (8) is movably sleeved inside the cavity (5), and the inclined surface of the trapezoid block (8) is movably connected with the inclined surface of the wedge block (10).

6. A polytetrafluoroethylene gasket seal according to claim 1, wherein: the wedge-shaped block (10) is movably sleeved inside the wedge-shaped groove (11), and the wedge-shaped groove (11) is communicated with the cavity (5).