CN212273037U

CN212273037U - Sealing ring with good sealing effect

Info

Publication number: CN212273037U
Application number: CN202020505197.5U
Authority: CN
Inventors: 汪德成; 陈曼; 陈爱明; 陈鑫; 王苗苗; 杨芬
Original assignee: Ningguo Zhongyi Rubber Co ltd
Current assignee: Ningguo Zhongyi Rubber Co ltd
Priority date: 2020-04-09
Filing date: 2020-04-09
Publication date: 2021-01-01
Anticipated expiration: 2030-04-09

Abstract

The utility model provides a sealed effectual sealing washer, relates to the sealing washer field, including annular body, the body is the rubber material, and two lateral wall middle parts all set up annular breach in its inside and outside, the top of annular breach sets up the reinforcement that resistance to pressure is higher than the body, the inside of reinforcement sets up the becket, the cyclic annular center that the becket formed is on the cyclic annular axis that the body formed. The utility model discloses can solve the sealing washer among the prior art and easily wear and tear and lead to sealing performance to reduce and easy ageing cracked problem even.

Description

Sealing ring with good sealing effect

Technical Field

The utility model belongs to the technical field of the sealing washer and specifically relates to a sealed effectual sealing washer.

Background

The sealing ring is widely used in the fields of automobiles, ships, air conditioners, water supply and drainage and the like. Which generally serves to prevent leakage of fluid or solid particles from between adjacent bonding surfaces and to prevent intrusion of foreign matter such as dust and moisture into the interior of the machine equipment.

As shown in fig. 3 and 4, the centers of the upper member and the lower member are provided with through holes communicated with each other, the lower member is provided with an annular groove, a sealing ring is arranged in the groove, and the inner side wall and the outer side wall of the groove are arranged in a clearance mode due to the fact that a certain pre-compression amount needs to be reserved, and the sealing ring divides the area between the upper member and the lower member into a P area and a Q area. When fluid passes through the P area, the P area is positive pressure, the Q area is negative pressure, and the sealing ring is used for preventing the fluid from entering the Q area from the P area; when fluid passes through the Q area, the Q area is positive pressure, the P area is negative pressure, and the sealing ring is used for blocking the fluid from entering the P area from the Q area. However, when the P region is a negative pressure, the seal ring is pressed toward the P region in the groove, the seal ring and the groove slide relatively, and a portion of the seal ring adjacent to the P region deforms and is sucked into the P region. When negative pressure exists in the Q area, the sealing ring can be extruded to the Q area in the groove, the sealing ring and the groove slide relatively, and meanwhile, the part, close to the Q area, of the sealing ring deforms and is sucked into the Q area. Relative sliding easily causes the sealing surface wearing and tearing of sealing washer thereby greatly reduced sealing performance, and partial deformation of sealing washer can lead to the sealing washer to age with higher speed even direct fracture.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a sealed effectual sealing washer is provided, the easy wearing and tearing of sealing washer among the solution prior art lead to sealing performance to reduce and easy ageing cracked problem even.

The utility model provides a technical scheme that its technical problem adopted is: a sealing ring with good sealing effect comprises an annular body, wherein the body is made of rubber, annular notches are formed in the middle of the inner side wall and the middle of the outer side wall of the body, a reinforcing body with pressure resistance higher than that of the body is arranged above the annular notches, a metal ring is arranged inside the reinforcing body, and the annular center formed by the metal ring is located on the annular central axis formed by the body.

Further, the longitudinal section of the body is circular or rectangular or any central symmetrical figure.

Furthermore, a reinforcement body with pressure resistance higher than that of the body is arranged below the annular notch.

Further, the reinforcement is made of polyamide.

Further, the main body part of the metal ring is embedded in the reinforcing body.

Further, the surface of the metal plate is exposed.

Further, the longitudinal section of the annular notch is rectangular.

The utility model discloses following beneficial effect has:

use the utility model discloses a during the sealing washer, need add in the recess of lower component and correspond the limiting plate 5 that matches with the annular breach after the extrusion. When the annular gap is not extruded, the thickness of the annular gap is larger than that of the limiting plate, and operators can conveniently align the limiting plate to the annular gap; after the annular gap is extruded, the limiting plate stretches into the interior of the annular gap and is tightly propped against the annular gap, so that the sealing ring is limited at the central position of the groove, relative sliding with the groove is avoided, and the sealing surface is not abraded. Meanwhile, as the reinforcement bodies are arranged above and below the annular gap and the metal rings are arranged in the reinforcement bodies, the pressure resistance of the positions, close to the P area and the Q area, of the sealing ring is enhanced, the sealing ring is not easy to deform and is sucked into the P area or the Q area, accelerated aging of the sealing ring is avoided, and breakage is avoided.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a schematic diagram illustrating a state of a prior art sealing ring in a positive pressure state in a region P;

FIG. 4 is a schematic diagram of a prior art seal ring in a state where the Q region is positive pressure;

fig. 5 is a schematic diagram of the state of the sealing ring of the present invention when there is a pressure difference between the P region and the Q region;

fig. 6 is a longitudinal sectional view of the seal ring when both sealing surfaces are flat.

Detailed Description

Example 1:

as shown in fig. 1, 2, 3, 4, 5 and 6, a seal ring with good sealing effect comprises an annular body 1, wherein the body 1 is made of rubber, annular gaps 4 are respectively arranged in the middle parts of the inner side wall and the outer side wall of the body 1, a reinforcement 2 with pressure resistance higher than that of the body 1 is arranged above the annular gaps 4, a metal ring 3 is arranged inside the reinforcement 2, and the annular center formed by the metal ring 3 is located on the annular central axis formed by the body 1.

Use the utility model discloses a during the sealing washer, need add in the recess of lower component and correspond the limiting plate 5 that matches with the annular breach after the extrusion. When the annular gap is not extruded, the thickness of the annular gap is larger than that of the limiting plate, and operators can conveniently align the limiting plate to the annular gap; after the annular gap is extruded, the limiting plate stretches into the interior of the annular gap and is tightly propped against the annular gap, so that the sealing ring is limited at the central position of the groove, relative sliding with the groove is avoided, and the sealing surface is not abraded. Meanwhile, the reinforcement body is arranged above the annular notch, and the metal ring is arranged in the reinforcement body, so that the pressure resistance of the position, close to the P area and the Q area, of the sealing ring is enhanced, the sealing ring is not easy to deform and is sucked into the P area or the Q area, accelerated aging of the sealing ring is avoided, and breakage is avoided.

The longitudinal section of the body 1 is circular or rectangular or any centrosymmetric figure.

When the longitudinal section of the body is rectangular, the upper and lower sealing surfaces are both planes. In fact, the upper and lower sealing surfaces may be of any shape.

And a reinforcing body 2 with pressure resistance higher than that of the body 1 is also arranged below the annular notch 4.

When the reinforcement is arranged below the annular notch, the front side and the back side of the sealing ring can be used, and even if the front side and the back side are reversed during installation by installation workers, the sealing effect cannot be influenced.

The reinforcement body 2 is made of polyamide.

The polyamide material is commonly called nylon, has high pressure resistance and cannot deform or break when bearing high pressure.

The main body of the metal ring 3 is embedded in the reinforcement 2.

The metal ring is less susceptible to deformation relative to the reinforcement.

The surface of the metal plate 3 is exposed.

The longitudinal section of the annular gap 4 is rectangular.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any person skilled in the art can make some changes or modifications to equivalent embodiments with equivalent changes without departing from the technical scope of the present invention, but all those persons do not depart from the technical spirit of the present invention, and any simple modifications, equivalent replacements, and improvements made to the above embodiments are within the spirit and principle of the present invention, and still belong to the protection scope of the technical solution of the present invention.

Claims

1. The utility model provides a sealing washer that sealed effectual, includes annular body (1), its characterized in that, body (1) is the rubber material, and two lateral wall middle parts all set up annular breach (4) inside and outside it, the top of annular breach (4) sets up reinforcement (2) that resistance to pressure is higher than body (1), the inside of reinforcement (2) sets up becket (3), the annular center that becket (3) formed is on the annular axis that body (1) formed.

2. A sealing ring with good sealing effect according to claim 1, characterized in that the longitudinal section of the body (1) is circular or rectangular or any one of centrosymmetric patterns.

3. A sealing ring with good sealing effect as claimed in claim 1 or 2, characterized in that a reinforcement (2) with higher pressure resistance than the body (1) is arranged below the annular gap (4).

4. A sealing ring with good sealing effect according to claim 3, characterized in that the reinforcement (2) is made of polyamide.

5. A sealing ring with good sealing effect according to claim 4, characterized in that the main body part of the metal ring (3) is embedded inside the reinforcement (2).

6. A seal ring with good sealing effect as claimed in claim 5, characterized in that the surface of the metal ring (3) is exposed.

7. A sealing ring with good sealing effect according to claim 1, 2, 4, 5 or 6, characterized in that the longitudinal section of the annular gap (4) is rectangular.