CN202048190U

CN202048190U - Sealing ring structure sealed by carbocyclic ring

Info

Publication number: CN202048190U
Application number: CN201120101380XU
Authority: CN
Inventors: 卫东
Original assignee: SHANGHAI DE-HUI SPECIFIC FAN Co Ltd; Shanghai Chaohui Ventilation & Environmental Protection Equipment Co Ltd
Current assignee: SHANGHAI DE-HUI SPECIFIC FAN Co Ltd; Shanghai Chaohui Ventilation & Environmental Protection Equipment Co Ltd
Priority date: 2011-04-08
Filing date: 2011-04-08
Publication date: 2011-11-23
Anticipated expiration: 2021-04-08

Abstract

The utility model relates to a sealing ring structure sealed by a carbocyclic ring. Sealing rings which has been cut into a plurality of segments form a circular ring. The cut of each cut sealing ring segment is a cant cut. The tangent of each cant cut is the circumferential tangent of the inner circle of the total sealing ring. According to the utility model, the entire sealing ring is cut into the plurality of segments, and the tangent of the cant cut of each segment is the circumferential tangent of the inner circle of the total sealing ring, such that if the entire sealing ring wears, each adjacent sealing ring segment does not interfere with each other but slides inward along the cant cut to be close to a shaft sleeve, thereby maintaining a reasonable cooperation gap between the sealing ring and the shaft sleeve.

Description

The seal ring structure of carbocyclic ring sealing

Technical field

The utility model relates to a kind of obturator, is specifically related to a kind of seal ring structure of carbocyclic ring sealing.

Background technique

The structure of carbocyclic ring sealing comprises ring packing cavity and annular sleeve, circular groove is arranged in the seal chamber, annular graphite-seal ring (carbocyclic ring) is housed in the groove, has small matching gap between the internal diameter of graphite-seal ring and the annular sleeve, sleeve outer surface scribbles wearing layer.Because real-world operation when work, transmission shaft contacts with carbocyclic ring, after after a while, the carbocyclic ring internal diameter is worn and torn to some extent.In case this situation occurs, carbocyclic ring can increase gradually with the matching gap of axle, influences sealing effect.

The seal ring of tradition carbocyclic ring sealing is with straight degree of lip-rounding formula, and seal ring is cut into three-clove style, mainly is for easy for installation.Straight mouthful of traditional carbocyclic ring under spring action, though can move inward, because otch is the right angle, moves past in the journey interior after wearing and tearing, and carbocyclic ring right angle, left and right sides top mutually bumps, and can't keep suitable, unified gap with axle, thereby influence sealing effect.

The model utility content

Technical problem to be solved in the utility model is to provide a kind of seal ring structure of carbocyclic ring sealing, and it can still can keep the reasonable matching gap between carbocyclic ring internal diameter and the axle sleeve after the carbocyclic ring wearing and tearing, keep certain sealing effect.

Its technical problem to be solved can be implemented by the following technical programs.

The seal ring structure of a kind of carbocyclic ring sealing, the seal ring that cuts into multistage is encircled into a sealed circular ring, and its characteristics are, and the otch of each that is cut section seal ring is an angular cut, and the tangent line of described angular cut is the tangent to periphery of seal ring inner circumference.

As the further improvement of the technical program, the tangent line of described each angular cut trend is all clockwise or is all counterclockwise with respect to described circumference.

Also as the further improvement of the technical program, described multistage seal ring is on average cut by whole seal ring and forms.

As one of preferred embodiment of the present utility model, described annulus is surrounded by three sections seal rings that are cut.

Adopt the seal ring structure of the carbocyclic ring sealing of technique scheme, by whole seal ring is cut into multistage, and the angular cut of each section all is the tangent to periphery of seal ring inner circumference, make after seal ring weares and teares, adjacent each section of seal ring do not disturb mutually and presses close to axle sleeve along the inside slippage of angular cut, keeps seal ring and shaft room reasonable supporting clearance.

Description of drawings

Below in conjunction with accompanying drawing embodiment of the present utility model being done one describes in detail.

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the partial enlarged drawing at Fig. 1 notch portion I place;

Fig. 3 is the structural representation of carbocyclic ring sealing;

Among the figure: 1---carbocyclic ring, 11,12,13---the carbocyclic ring lobe, 111,121,131---otch, 1311---tangent line, 2---axle, 3---spring, 4---casing, 5---the carbocyclic ring seat, 6---sealing seat, 7---outside framework oil seal.

Embodiment

Carbocyclic ring sealing system as shown in Figure 1 to Figure 3 and seal ring structure signal, in the casing 4 of sealing system, be provided with sealing seat 6, a plurality of carbocyclic ring 1(seal rings) arranged seals axle 2 in the position of carbocyclic ring seat 5, and each carbocyclic ring 1 is all pressed close to the direction of axle 2 through spring 3 abutment action.Both sides are provided with standard piece outside framework oil seal 7 and are used for the assist shaft sealing.

Wherein carbocyclic ring 1 constitutes by three sections that cut, be that

carbocyclic ring lobe

11,12 and 13 is encircled into a sealed circular ring jointly, all the tangent to periphery (can with reference to the tangent line among Fig. 2 1311) of carbocyclic ring inner circumference on each section carbocyclic ring to the tangent line of 111,121 and 131, three otch of otch that a cutting should be arranged; Its otch is headed for unification to counterclockwise.

Three sections

carbocyclic ring lobes

11,12 and 13 on average are divided into three sections with whole carbocyclic ring 1, can certainly cut apart 4 sections or adjust size relation between each section according to actual needs.

This carbocyclic ring angle structure after the improvement, with the three-clove style otch of carbocyclic ring along the internal diameter tangent to periphery draw three cut line and the internal diameter circumference tangent.In practical work process, in case the internal diameter circumference weares and teares with axle 2, rely on the tightening force of the spring 3 on the carbocyclic ring outer peripheral surface, carbocyclic ring 1 can inwardly tighten up according to three lobe cut-out directions, because cut line is tangent with carbocyclic ring internal diameter circumference, thereby the carbocyclic ring after tightening up is still matched with axle, and basic identical with former carbocyclic ring internal diameter, keep original matching gap, reached good sealing effect.

Claims

1. the seal ring structure of carbocyclic ring sealing, the seal ring that cuts into multistage is encircled into an annulus, it is characterized in that, and the otch of each that is cut section seal ring is an angular cut, and the tangent line of described angular cut is the tangent to periphery of seal ring inner circumference.

2. according to the seal ring structure of the described carbocyclic ring sealing of claim 1, it is characterized in that the tangent line trend of described each angular cut is all clockwise or is all counterclockwise with respect to described circumference.

3. according to the seal ring structure of the described carbocyclic ring sealing of claim 1, it is characterized in that described multistage seal ring is on average cut by whole seal ring and forms.

4. according to the seal ring structure of the described carbocyclic ring sealing of claim 3, it is characterized in that described annulus is surrounded by three sections seal rings that are cut.