CN202500996U

CN202500996U - Compound type rubber sealing ring

Info

Publication number: CN202500996U
Application number: CN201220156975XU
Authority: CN
Inventors: 何斌波
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-04-01
Filing date: 2012-04-01
Publication date: 2012-10-24
Anticipated expiration: 2022-04-01

Abstract

The utility model discloses a compound type rubber sealing ring which comprises a rubber sealing ring main body and a spring ring, wherein the spring ring is embedded along the circumference of the sealing ring, and a U-shaped groove which is used for accommodating the rubber sealing ring main body at a directional compressing moment is formed on an external diametric surface of the rubber sealing ring main body along the circumference of the sealing ring. During long-term directional compressing operation, the compound type rubber sealing ring is difficult to abrade, age and deform, and has better sealing property and longer service life.

Description

A kind of combined type rubber seal

Technical field

The utility model relates to a kind of rubber seal, particularly a kind of combined type rubber seal.

Background technique

In industrial machinery, cylinder body and each transmission part are equipped with lubrication system, can effectively operate with the assurance machinery, and for leakage that prevents oiling agent in cylinder body and each lubrication system and the pollution of avoiding external environment, just must use seal element.

Mostly seal element commonly used is the O-ring seals processed by rubber in the existing technology, and behind the seal groove of packing into, its cross section generally receives the compressive strain of 15%-25%; Under the effect of pressure medium; Move to one side of groove, sealing needs the gap of sealing, thereby reaches the purpose of sealing.But because O-ring seals for a long time in directed compression work, is subject to the impact of high-pressure medium, so easy abrasion, produce aging and the plasticizing distortion.And rubber may wear to the to a certain degree no automatic compensation ability in back, causes the O-ring seals degradation, and working life is short, therefore needs often replacement, and this directly has influence on the continuity of operation.And in use,, cause the waste of oiling agent and the pollution of environment because the sealability variation causes oiling agent to leak.

The model utility content

The utility model is the defective that exists in the above existing technology in order to overcome, and a kind of automatic compensation ability that has is provided, and when orientation is compressed, can adapt to the combined type rubber seal that high-pressure medium impacts, and the sealing circle comprises: the rubber seal body; Spring ring, it is buried underground along the seal ring circumference; The outer diametric plane of rubber seal body circumferentially offers when being used for directed compression the U-groove bevel of effect that the rubber seal main body is held along seal ring.

In technique scheme, spring ring is formed by two, and two spring rings are disposed axially in the body of rubber seal body.

In technique scheme, the outer diametric plane of rubber seal body is the cylndrical surface, and U-groove bevel is arranged on the cylndrical surface.

Compared with prior art; The utlity model has following beneficial effect: spring ring provides radial compaction power can for the rubber seal body, has avoided sealing surface directly stressed, to reduce friction; Thereby effectively increase the intensity of rubber seal body; Avoided the rubber seal body impacted by high-pressure medium and be out of shape, the loss to sealing surface compensates at work, thereby has prolonged the working life of rubber seal.The U-groove bevel of rubber seal body can hold the clout that the rubber seal body is extruded the back crimping section, to guarantee the sealability at sealing position, avoided seal element after assembling owing to assemble the situation that improper generation wrinkle cause poor sealing.

Description of drawings

Fig. 1 is the utility model structural representation.

In conjunction with the accompanying drawing following reference character of mark above that:

1 one rubber seal bodies; 2 one spring rings; 3 one U-groove bevels.

Embodiment

Below in conjunction with accompanying drawing, the embodiment of the utility model is described in detail, but the protection domain that is to be understood that the utility model does not receive the restriction of embodiment.

The utility model is as shown in Figure 1, is furnished with two spring rings 2 along the seal ring axially spaced-apart in rubber seal body 1 body, and two spring rings 2 are arranged in the circumference of rubber seal body 1 body inner seal ring.

Further as shown in Figure 1, the outer diametric plane of rubber seal body 1 circumferentially offers when being used for directed compression the U-groove bevel 3 that rubber seal body 1 is worked the effect of holding along seal ring.

More than a disclosed specific embodiment that is merely the utility model, still, the utility model is not limited thereto, any those skilled in the art can think variation all should fall into the protection domain of the utility model.

Claims

1. a combined type rubber seal comprises: the rubber seal body; Spring ring, it is buried underground along the seal ring circumference; The outer diametric plane of rubber seal body circumferentially offers when being used for directed compression the U-groove bevel of effect that the rubber seal main body is held along seal ring.

2. combined type rubber seal according to claim 1 is characterized in that, said spring ring is formed by two, and two spring rings are disposed axially in the body of rubber seal body.

3. combined type rubber seal according to claim 1 is characterized in that, the outer diametric plane of said rubber seal body is the cylndrical surface, and U-groove bevel is arranged on the cylndrical surface.