CN215634945U

CN215634945U - Expanded polytetrafluoroethylene sealing gasket

Info

Publication number: CN215634945U
Application number: CN202121519950.7U
Authority: CN
Inventors: 沈良; 倪勇; 刘春花
Original assignee: Deqing Xinyuanheng Plastic Technology Co ltd
Current assignee: Deqing Xinyuanheng Plastic Technology Co ltd
Priority date: 2021-07-05
Filing date: 2021-07-05
Publication date: 2022-01-25
Anticipated expiration: 2031-07-05

Abstract

The utility model discloses an expanded polytetrafluoroethylene sealing gasket which comprises an outer ring, wherein a fixed column is fixedly connected to the inner bottom of the outer ring, the fixed column is distributed at the inner bottom of the outer ring in a surrounding manner, an expansion spring is fixedly connected to the inner bottom of the fixed column, a movable plate is arranged at one end, away from the bottom of the fixed column, of the expansion spring, the side edge of the movable plate is attached to the inner wall of the fixed column, a movable column is fixedly connected to the upper surface of the movable plate, a movable ring is fixedly connected to one end, away from the movable plate, of the movable column, the side edge of the movable ring is attached to the inner wall of the outer ring, a rotating ring is arranged at the top of the outer ring, a connecting ring is fixedly connected to the lower surface of the rotating ring, and the lower surface of the connecting ring is attached to the upper surface of the movable ring. The sealing device can seal the mounting piece according to different lengths of the fixing piece, and simultaneously isolate the fixing piece from the mounting piece, so that the abrasion of the fixing piece to the mounting piece is reduced.

Description

Expanded polytetrafluoroethylene sealing gasket

Technical Field

The utility model belongs to the technical field of sealing gaskets, and particularly relates to an expanded polytetrafluoroethylene sealing gasket.

Background

Polytetrafluoroethylene, commonly known as "plastic king", is a high molecular polymer prepared by polymerization using tetrafluoroethylene as a monomer. White wax, translucency, heat resistance and cold resistance are excellent, and the glass can be used for a long time at minus 180-260 ℃. The material has the characteristics of acid resistance, alkali resistance and various organic solvents resistance, and is almost insoluble in all solvents. Meanwhile, the polytetrafluoroethylene has the characteristic of high temperature resistance, has extremely low friction coefficient, can be used for lubricating, and becomes an ideal coating for easily cleaning the inner layer of the water pipe.

The sealing gasket is a sealing spare part used for machines, equipment and pipelines as long as the fluid exists, and uses the materials with the sealing function inside and outside;

the existing sealing gasket is generally of a single-piece structure made of rubber, the sealing gaskets of different specifications need to be used when the sealing gasket faces fixing pieces on instruments of different specifications, and when a plurality of common gaskets are required to be stacked for use, the sealing performance of the gaskets is reduced, and the sealing gasket is not beneficial to mechanical use.

Disclosure of Invention

Aiming at the situation, in order to overcome the defects of the prior art, the utility model provides an expanded polytetrafluoroethylene sealing gasket, which effectively solves the problem that the sealing effect is poor because a plurality of gaskets are required to be used for sealing when the sealing gasket in the current market faces fixing pieces with different lengths.

In order to achieve the purpose, the utility model provides the following technical scheme:

the utility model provides an expanded polytetrafluoroethylene seal gasket, including the outer loop, bottom fixedly connected with fixed column in the outer loop, the fixed column encircles and distributes in outer intra-annular bottom, bottom fixedly connected with expanding spring in the fixed column, the one end that expanding spring kept away from fixed column bottom is provided with the movable plate, and the movable plate side is laminated with the fixed column inner wall mutually, fixed surface is connected with the removal post on the movable plate, the one end fixedly connected with shift ring of movable plate is kept away from to the removal post, and the shift ring side is laminated with the outer loop inner wall mutually, the outer loop top is provided with the rotating ring, fixed surface is connected with the go-between under the rotating ring, and the go-between lower surface is laminated with the shift ring upper surface mutually.

Preferably, the upper surface of the moving ring is fixedly connected with a limiting snap ring, and the combined cross-section structure of the moving ring and the limiting snap ring is a U-shaped structure.

Preferably, the connecting ring is located inside the limiting clamp ring, and the side wall of the connecting ring is attached to the inner surface of the limiting clamp ring.

Preferably, a second through hole is formed in the rotating ring, and the second through hole is located at the center of the rotating ring.

Preferably, a first through hole is formed in the outer ring, and the first through hole corresponds to the second through hole in position.

Preferably, the cross-sectional structure of the outer ring is a U-shaped structure, and the outer diameter of the rotating ring is matched with that of the outer ring.

Preferably, the lower surface of the rotating ring is provided with a sealing ring, and the side edge of the sealing ring is attached to the inner surface of the outer ring.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the utility model, through the outer ring, the fixed column, the telescopic spring, the movable plate, the movable column, the movable ring and the limiting snap ring, when the movable ring is pressed downwards in use, the movable ring can move downwards and is subjected to an upward reaction force under the action of the telescopic spring, so that the purpose of sealing the mounting piece according to different lengths of the mounting piece is achieved, meanwhile, the mounting piece and the mounting piece are isolated, and the abrasion of the mounting piece by the mounting piece is reduced.

2. According to the utility model, through the rotating ring and the connecting ring, the rotating ring can rotate along with the fixing piece when in use, and the whole device can not rotate along with the fixing piece, so that the gasket can be prevented from rotating along with a screw when a conventional gasket is fixed by using fixing pieces such as a screw.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model.

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic diagram of an outer ring structure of the present invention.

Fig. 3 is a schematic diagram of a moving ring structure according to the present invention.

Fig. 4 is a schematic view of a rotating ring structure of the present invention.

Fig. 5 is a sectional view of the internal structure of embodiment 1 of the present invention.

Fig. 6 is a sectional view of the internal structure of embodiment 2 of the present invention.

In the figure: 1. an outer ring; 2. fixing a column; 3. a tension spring; 4. moving the plate; 5. moving the column; 6. a moving ring; 7. a limit snap ring; 8. a connecting ring; 9. a rotating ring; 10. a first through hole; 11. a second through hole; 12. and (4) a sealing ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the first embodiment, as shown in fig. 1-5, an expanded polytetrafluoroethylene sealing gasket comprises an outer ring 1, a fixed column 2 is fixedly connected to the bottom of the outer ring 1, the fixed column 2 is distributed around the bottom of the outer ring 1, a telescopic spring 3 is fixedly connected to the bottom of the fixed column 2, the height of the whole gasket can be adjusted according to the length of a fixing part by arranging the telescopic spring 3, so that the device can be better sealed, a moving plate 4 is arranged at one end of the telescopic spring 3 away from the bottom of the fixed column 2, the side edge of the moving plate 4 is attached to the inner wall of the fixed column 2, a moving column 5 is fixedly connected to the upper surface of the moving plate 4, a moving ring 6 is fixedly connected to one end of the moving column 5 away from the moving plate 4, the side edge of the moving ring 6 is attached to the inner wall of the outer ring 1, and the moving plate 4 facilitates the telescopic spring 3 to push the moving column 5 upwards, so as to achieve the effect of controlling the whole height, the movable column 5 is convenient for the movable plate 4 to be connected with the movable ring 6, the movable ring 6 can also move when the movable plate 4 moves, the movable column 5 can be connected through the movable ring 6 when in use, and further when the movable plate 4 moves, the movable ring 6 can move along with the movable column, the top of the outer ring 1 is provided with the rotating ring 9, the lower surface of the rotating ring 9 is fixedly connected with the connecting ring 8, the lower surface of the connecting ring 8 is attached to the upper surface of the movable ring 6, the rotating ring 9 can rotate along with the fixing piece when in use, and the whole movable column can not rotate along with the fixing piece, and the gasket can rotate along with the screw when the conventional gasket is fixed by using the fixing pieces such as screws.

The upper surface of the moving ring 6 is fixedly connected with a limiting snap ring 7, and the combined cross-section structure of the moving ring 6 and the limiting snap ring 7 is a U-shaped structure; make the device can be spacing with go-between 8 on the shift ring 6 through spacing snap ring 7, and then the device of being convenient for uses.

The connecting ring 8 is positioned inside the limiting clamp ring 7, and the side wall of the connecting ring 8 is attached to the inner surface of the limiting clamp ring 7; the limiting clamping ring 7 is convenient to limit the connecting ring 8.

A second through hole 11 is formed in the rotating ring 9, and the second through hole 11 is located at the center of the rotating ring 9; the product of the utility model can be fixed conveniently.

Wherein, the inner part of the outer ring 1 is provided with a first through hole 10, and the first through hole 10 corresponds to the second through hole 11; the product of the utility model can be fixed conveniently.

The cross section structure of the outer ring 1 is a U-shaped structure, and the outer diameter of the rotating ring 9 is matched with that of the outer ring 1; the product of the utility model is convenient to install and use.

The second embodiment is shown in fig. 1 to 4 and fig. 6, and is different from the first embodiment in that a sealing ring 12 is arranged on the lower surface of the rotating ring 9, and the side edge of the sealing ring 12 is attached to the inner surface of the outer ring 1; when the rotating ring 9 moves downwards in use, the sealing ring 12 can be matched with the outer ring 1 to completely seal the inside, and a better sealing effect can be achieved.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

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 utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An expanded polytetrafluoroethylene sealing gasket comprises an outer ring and is characterized in that: bottom fixedly connected with fixed column in the outer loop, the fixed column encircles and distributes at outer intra-annular bottom, bottom fixedly connected with expanding spring in the fixed column, the one end that fixed column bottom was kept away from to expanding spring is provided with the movable plate, and the movable plate side is laminated with the fixed column inner wall mutually, fixed surface is connected with the removal post on the movable plate, the one end fixedly connected with shifting ring that the movable plate was kept away from to the removal post, and the shifting ring side is laminated with the outer loop inner wall mutually, the outer loop top is provided with the rotating ring, fixed surface is connected with the go-between under the rotating ring, and the go-between lower surface is laminated with the shifting ring upper surface mutually.

2. An expanded polytetrafluoroethylene sealing gasket according to claim 1, wherein: the upper surface of the moving ring is fixedly connected with a limiting snap ring, and the combined cross-section structure of the moving ring and the limiting snap ring is a U-shaped structure.

3. An expanded polytetrafluoroethylene sealing gasket according to claim 1, wherein: the go-between is located inside the spacing snap ring, and the go-between lateral wall laminates with spacing snap ring internal surface mutually.

4. An expanded polytetrafluoroethylene sealing gasket according to claim 1, wherein: a second through hole is formed in the rotating ring and is located at the center of the rotating ring.

5. An expanded polytetrafluoroethylene sealing gasket according to claim 1, wherein: a first through hole is formed in the outer ring, and the first through hole corresponds to the second through hole in position.

6. An expanded polytetrafluoroethylene sealing gasket according to claim 1, wherein: the cross-sectional structure of outer loop is U-shaped structure, and the rotating ring external diameter and outer loop external diameter phase-match.

7. An expanded polytetrafluoroethylene sealing gasket according to claim 1, wherein: the lower surface of the rotating ring is provided with a sealing ring, and the side edge of the sealing ring is attached to the inner surface of the outer ring.