CN211231968U

CN211231968U - High-temperature-resistant modified polyurethane rubber sealing ring

Info

Publication number: CN211231968U
Application number: CN201922316739.4U
Authority: CN
Inventors: 俞洋; 瞿建恩; 徐彬
Original assignee: Suzhou Meifului New Material Technology Co ltd
Current assignee: Suzhou Meifului New Material Technology Co ltd
Priority date: 2019-12-21
Filing date: 2019-12-21
Publication date: 2020-08-11
Anticipated expiration: 2029-12-21

Abstract

The utility model discloses a high temperature resistant modified polyurethane rubber seal, it is protruding including lower body, rubber layer and annular, the inside inboard of body sets up the cavity, and the inside second reinforcing ring that is provided with of body in the cavity outside, the inside rubber layer that is provided with of body in the second reinforcing ring outside, and the inside first reinforcing ring that is provided with of body in the rubber layer outside, the annular arch is all installed to the top and the bottom of body annularly. The utility model discloses a set up the second spring inside the body, the telescopic link, first reinforcing ring and second reinforcing ring, in the use, the vibrations that the pipeline in the body received unexpected impact force or use produced are felt, transmit for this internal back, the impact force makes the second spring take place deformation, and then slows down the impact force and causes the damage to the body, and the telescopic link of body inside, first reinforcing ring and second reinforcing ring can prevent that the body from seriously deforming, and then make the body scrap, cause economic loss.

Description

High-temperature-resistant modified polyurethane rubber sealing ring

Technical Field

The utility model relates to a sealing washer technical field specifically is a high temperature resistant modified polyurethane rubber seal.

Background

The sealing ring is a common element for preventing gas and liquid leakage or foreign matter invasion and the like, wherein the polyurethane rubber sealing ring is widely used due to very good mechanical property, wear resistance, high pressure resistance, aging resistance, ozone resistance and oil resistance, but the existing high-temperature resistant modified polyurethane rubber sealing ring has many problems or defects.

First, traditional high temperature resistant modified polyurethane rubber sealing washer does not have the reinforcement function, and the sealing washer is easy to be out of shape excessively, causes unable the use.

Secondly, the traditional high-temperature-resistant modified polyurethane rubber sealing ring is not provided with a wear-resistant and fixed module, cannot be stably fixed, and the surface of the sealing ring is easy to wear.

Thirdly, the traditional high temperature resistant modified polyurethane rubber sealing ring has no thermal expansion and cold shrinkage prevention structure, and when the temperature change is overlarge, the sealing ring is easy to cause a fine seam due to thermal expansion and cold shrinkage, so that the sealing effect is reduced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a high temperature resistant modified polyurethane rubber seal to solve the easy deformation of the sealing washer that provides in the above-mentioned background art excessive, easy wearing and tearing, and fixed insecure and easy cause the slit because of expend with heat and contract with cold, reduce the problem of sealed effect.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a high temperature resistant modified polyurethane rubber seal, includes body, rubber layer and annular bulge, the inside inboard of body sets up the cavity, and the inside second reinforcing ring that is provided with of body outside the cavity, the inside rubber layer that is provided with of body in the second reinforcing ring outside, and the inside first reinforcing ring that is provided with of body in the rubber layer outside, annular bulge is all installed to the top and the bottom of body annularly.

Preferably, the inner side of the cavity is uniformly provided with a wave-shaped sealing lip, and the surface of the wave-shaped sealing lip is uniformly provided with anti-skidding threads.

Preferably, the rubber layer is internally and uniformly provided with telescopic rods, and the surfaces of the telescopic rods are uniformly wound with second springs.

Preferably, all be provided with the fixed case in the rubber layer between the telescopic link, and the inside of fixed case all is provided with the gasbag, the third spring is all installed to the inside of gasbag, and the gasbag is close to second reinforcing ring one side intermediate position department and all is provided with the gas outlet that extends to the cavity inside, the connecting rod is evenly installed to one side that is close to first reinforcing ring in the rubber layer inside, and the connecting rod is close to fixed case one end all with gasbag one side fixed connection.

Preferably, first springs are uniformly arranged in the body at the middle position of the outer side of the first reinforcing ring, and wear-resisting plates are annularly arranged between one ends, far away from the first reinforcing ring, of the first springs.

Preferably, the mounting groove is all installed to the intermediate position department of the protruding inside both sides of annular, and the inside of mounting groove all installs the fourth spring, the gag lever post that runs through the mounting groove lateral wall is installed to fourth spring one end, and the gag lever post keeps away from the one end of mounting groove and installs the arc limiting plate.

Compared with the prior art, the beneficial effects of the utility model are that: the high-temperature-resistant modified polyurethane rubber sealing ring is reasonable in structure and has the following advantages:

(1) the utility model discloses a body, including the body, the body is inside to be set up the second spring, the telescopic link, first reinforcing ring and second reinforcing ring, in the use, the vibrations that the pipeline produced when the body receives unexpected impact force or in the use are felt, transmit for this internal back, the impact force makes the second spring take place deformation, and then slows down the impact force and leads to the fact the damage to the body, and the inside telescopic link of body, first reinforcing ring and second reinforcing ring can prevent that the body from seriously deforming, and then make the body scrap, cause economic loss.

(2) Through set up antifriction plate and first spring in the body outside, and body top and bottom set up annular protruding, pack the body into the pipeline on the back, through the elasticity of fourth spring, make the gag lever post remove, thereby drive the arc limiting plate and hug closely the pipeline, prevent the body installation back, unexpected slip causes the leakage, and under the elastic force effect of first spring, it is external to make the antifriction plate pop out this body, when preventing to use, directly rubs the body surface, cause the wearing and tearing of body, reduction device life.

(3) Through set up the fixed case in rubber in situ portion, when temperature variation was too big, the body can expend with heat and contract with cold to make the connecting rod take place to remove, and then compression gasbag, in the air in the gasbag passed through the gas outlet and discharges into the cavity, and then make the cavity can not shrink, continue to hug closely the pipeline, prevent that temperature variation when too big, the body causes the slit because of expend with heat and contract with cold easily, reduces sealed effect.

Drawings

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

FIG. 2 is an enlarged schematic view of the structure at A of FIG. 1 according to the present invention;

fig. 3 is a schematic front view of the present invention;

fig. 4 is an enlarged schematic structural diagram of the point B in fig. 3 according to the present invention.

In the figure: 1. a wear plate; 2. a first spring; 3. a body; 4. a second spring; 5. a rubber layer; 6. a telescopic rod; 7. a first reinforcing ring; 8. a second reinforcing ring; 9. a cavity; 10. a wave-shaped sealing lip; 11. an annular projection; 12. a connecting rod; 13. a fixed box; 14. a third spring; 15. an air outlet; 16. an air bag; 17. mounting grooves; 18. a fourth spring; 19. an arc limiting plate; 20. a limiting rod.

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 an embodiment: a high-temperature-resistant modified polyurethane rubber sealing ring comprises a body 3, a rubber layer 5 and an annular bulge 11, wherein a cavity 9 is arranged on the inner side of the interior of the body 3;

the inner side of the cavity 9 is uniformly provided with a wave-shaped sealing lip 10, and the surface of the wave-shaped sealing lip 10 is uniformly provided with anti-skid threads;

the wave-shaped sealing lip 10 can improve the sealing performance of the device, and the anti-skid threads on the surface can increase the friction force with the pipeline, so that the body 3 is prevented from sliding accidentally;

a second reinforcing ring 8 is arranged inside the body 3 outside the cavity 9, and a rubber layer 5 is arranged inside the body 3 outside the second reinforcing ring 8;

the inner part of the rubber layer 5 is uniformly provided with a telescopic rod 6, and the surface of the telescopic rod 6 is uniformly wound with a second spring 4;

the impact force applied to the body 3 can be well relieved by the elasticity of the second spring 4, so that the body 3 is prevented from seriously deforming;

a fixed box 13 is arranged inside each rubber layer 5 between the telescopic rods 6, an air bag 16 is arranged inside each fixed box 13, a third spring 14 is arranged inside each air bag 16, an air outlet 15 extending into the cavity 9 is arranged at the middle position of one side of each air bag 16 close to the second reinforcing ring 8, a connecting rod 12 is uniformly arranged at one side of the rubber layer 5 close to the first reinforcing ring 7, and one end of each connecting rod 12 close to the fixed box 13 is fixedly connected with one side of each air bag 16;

when the temperature changes too much, the body 3 expands with heat and contracts with cold, so that the connecting rod 12 moves to compress the air bag 16, air in the air bag 16 is discharged into the cavity 9 through the air outlet 15, the cavity 9 cannot contract, the air bag is continuously attached to the pipeline, and the phenomenon that when the temperature changes too much, the body 3 is easy to cause a slit due to expansion with heat and contraction with cold, and the sealing effect is reduced is prevented;

a first reinforcing ring 7 is arranged inside the body 3 outside the rubber layer 5;

first springs 2 are uniformly arranged in the body 3 at the middle position of the outer side of the first reinforcing ring 7, and wear-resisting plates 1 are annularly arranged between one ends, far away from the first reinforcing ring 7, of the first springs 2;

the wear-resisting plate 1 is popped out of the body 3 through the elasticity of the first spring 2, so that the wear-resisting plate can be prevented from directly rubbing the surface of the body 3 when in use, the wear of the body 3 is prevented, and the service life of the device is shortened;

the top end and the bottom end of the body 3 are both annularly provided with annular bulges 11;

mounting grooves 17 are respectively mounted in the middle positions of two sides in the annular bulge 11, fourth springs 18 are respectively mounted in the mounting grooves 17, one ends of the fourth springs 18 are provided with limiting rods 20 penetrating through the side walls of the mounting grooves 17, and arc-shaped limiting plates 19 are mounted at the ends, far away from the mounting grooves 17, of the limiting rods 20;

the elasticity of the fourth spring 18 enables the limiting rod 20 to move, so that the arc limiting plate 19 is driven to be attached to the pipeline, and the body 3 is prevented from sliding accidentally after being installed.

The working principle is as follows: when the wear-resisting device is used, the body 3 is firstly installed on a pipeline, the limiting rod 20 is moved through the elastic force of the fourth spring 18, the arc-shaped limiting plate 19 is driven to be tightly attached to the pipeline, the body 3 is prevented from accidentally sliding to cause leakage after being installed, the wear-resisting plate 1 is made to be popped out of the body 3 under the elastic force action of the first spring 2, the surface of the body 3 is directly rubbed when the wear-resisting device is used, the wear of the body 3 is caused, and the service life of the device is shortened;

in the using process, when the body 3 is subjected to unexpected impact force or vibration sense generated by a pipeline in the using process and is transmitted into the body 3, the impact force enables the second spring 4 to deform, so that the damage of the impact force to the body 3 is reduced, and the telescopic rod 6, the first reinforcing ring 7 and the second reinforcing ring 8 in the body 3 can prevent the body 3 from being seriously deformed, so that the body 3 is scrapped to cause economic loss;

when the temperature variation is too big, body 3 can expend with heat and contract with cold to make connecting rod 12 take place to remove, and then compress air bag 16, the air in air bag 16 passes through in 15 emissions cavity 9 of gas outlet, and then makes cavity 9 can not shrink, continues hug closely the pipeline, prevents that when the temperature variation is too big, body 3 causes the slit because of expend with heat and contract with cold easily, reduces sealed effect.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a high temperature resistant modified polyurethane rubber seal, includes body (3), rubber layer (5) and annular arch (11), its characterized in that: the rubber layer reinforced plastic pipe is characterized in that a cavity (9) is arranged on the inner side of the inner portion of the body (3), a second reinforcing ring (8) is arranged inside the body (3) on the outer side of the cavity (9), a rubber layer (5) is arranged inside the body (3) on the outer side of the second reinforcing ring (8), a first reinforcing ring (7) is arranged inside the body (3) on the outer side of the rubber layer (5), and annular bulges (11) are annularly arranged on the top end and the bottom end of the body (3).

2. The high-temperature-resistant modified polyurethane rubber sealing ring according to claim 1, wherein: the inboard of cavity (9) evenly is provided with wavy sealing lip (10), and the surface of wavy sealing lip (10) evenly is provided with anti-skidding screw thread.

3. The high-temperature-resistant modified polyurethane rubber sealing ring according to claim 1, wherein: the rubber layer (5) is internally and uniformly provided with a telescopic rod (6), and the surface of the telescopic rod (6) is uniformly wound with a second spring (4).

4. The high-temperature-resistant modified polyurethane rubber sealing ring according to claim 3, wherein: rubber layer (5) between telescopic link (6) inside all is provided with fixed case (13), and the inside of fixed case (13) all is provided with gasbag (16), third spring (14) are all installed to the inside of gasbag (16), and gasbag (16) are close to second reinforcing ring (8) one side intermediate position department and all are provided with gas outlet (15) that extend to cavity (9) inside, connecting rod (12) are evenly installed to one side that rubber layer (5) inside is close to first reinforcing ring (7), and connecting rod (12) are close to fixed case (13) one end all with gasbag (16) one side fixed connection.

5. The high-temperature-resistant modified polyurethane rubber sealing ring according to claim 1, wherein: first spring (2) are evenly installed inside body (3) of first reinforcing ring (7) outside intermediate position department, and wear-resisting plate (1) are installed to the annular between the one end that first reinforcing ring (7) were kept away from in first spring (2).

6. The high-temperature-resistant modified polyurethane rubber sealing ring according to claim 1, wherein: mounting groove (17) are all installed to the intermediate position department of the inside both sides of annular arch (11), and fourth spring (18) are all installed to the inside of mounting groove (17), gag lever post (20) that run through mounting groove (17) lateral wall are installed to fourth spring (18) one end, and gag lever post (20) keep away from the one end of mounting groove (17) and install arc limiting plate (19).