CN204879008U

CN204879008U - Valve valve rod axle seal structure

Info

Publication number: CN204879008U
Application number: CN201520206967.5U
Authority: CN
Inventors: 周温; 雷武; 武亮
Original assignee: SHANXI XINSIBEI TECHNOLOGY Co Ltd
Current assignee: SHANXI XINSIBEI TECHNOLOGY Co Ltd
Priority date: 2015-04-09
Filing date: 2015-04-09
Publication date: 2015-12-16
Anticipated expiration: 2025-04-09

Abstract

The utility model provides a novel valve valve rod axle seal structure, its structure includes: the valve rod axle, compress tightly secondary circle, valve body upper cover plate and sealing ring structure, appear the sealing washer with O and impress in the recess of Y shape sealing washer, can be according to actual required many the O shape sealing washers of impressing, the stack thickness that makes O shape sealing washer is not less than the depth of groove of Y shape sealing washer. The utility model discloses a sealing the target reliable, that self -lubricating nature is good, can satisfying the construction requirements under the adverse circumstances such as high pressure, dust, humidity, the structure global design is simple, and it is convenient to maintain, preparation low cost, the satisfied current requirement of using.

Description

Valve rod axle sealing structure

Technical field

The utility model relates to a kind of sealing configuration, especially relates to a kind of valve rod axle sealing structure.

Background technique

The valve rod axle used at present and valve seal mode are generally soft packing seal, O shape or Y shape circle sealing configuration, are all generally the objects utilizing gland or screw in compression to reach sealing.Wherein, there is gland impacting force skewness vertically in packing seal mode, and the wearing and tearing near gland place axle are very fast, the problem that life cycle is shorter; Seal with O ring requires certain lubricant medium to ensure being active in one's movements of stem shaft when using, itself easy dilatating and deformable thus cause poorly sealed, therefore affects its sealing effect; Y-shaped ring is suitable for axial seal, but its wear resistance is poor, is not suitable for applying on valve shaft.Comprehensively known, when valve requires bad environments, as in the face of the environment such as high pressure, high temperature, dust, humidity, oil-free lubrication time, existing sealing configuration just can not meet needed for use.

Model utility content

Technical problem to be solved in the utility model is: existing valve rod shaft sealing mode service condition is limited, can not meet the lower sealing demand to valve rod of rugged environment.

The technological scheme that the utility model adopts is: provide a kind of novel valve rod axle sealing structure, its structure comprises: stem shaft, compression secondary circle, valve upper cover plate, y-shaped ring and O-ring seals,

Described y-shaped ring, formed by Furtulon materials processing, shape is as Y shape.

Described seal element is selected has self lubricity, material that workability is good, as Furtulon.

Connection procedure: be pressed into by O-ring seals in the groove of y-shaped ring, can, according to actual required press-in many O-ring seals, make the superposition thickness of O-ring seals be not less than the depth of groove of y-shaped ring.

Sealing principle: by screw to supported flange, the effect compressing secondary circle, makes O shape enclose and realizes compressive seal, forces y-shaped ring inwall to shrink, and pray the object of sealed valve stem axle in the process of O shape circle compressive deformation.

The beneficial effects of the utility model are: achieve the target that sealing is reliable, self lubricity is good, the construction requirement under the rugged environment such as high pressure, dust, humidity can be met, structural entity simplicity of design, easy to maintenance, fabricating cost is cheap, meets the requirement of existing use.

Accompanying drawing explanation

Fig. 1 is sealed structural representation;

Fig. 2 is ring structure schematic diagram;

In figure: 1, y-shaped ring; 2, O-ring seals; 3, stem shaft; 4, supported flange; 5, secondary circle is compressed; 6, valve body.

Embodiment

As shown in Figure 1, provide a kind of novel valve rod axle sealing structure, its structure comprises: y-shaped ring 1, O-ring seals 2, stem shaft 3, supported flange 4, compression secondary circle 5 and valve body 6, the mutual structure of y-shaped ring 1 and O-ring seals 2 as shown in Figure 2.

Y-shaped ring 1, formed by Furtulon materials processing, shape is as Y shape.

Connection procedure: be pressed into by O-ring seals 2 in the groove of y-shaped ring 1, can, according to actual required press-in many O-ring seals 2, make the superposition thickness of O-ring seals 2 be not less than the depth of groove of y-shaped ring 1.

By screw to supported flange 4, the effect compressing secondary circle 5, make O-ring seals 2 realize compressive seal, in the process of O-ring seals 2 compressive deformation, force y-shaped ring 1 inwall to shrink, and play the object of sealed valve stem axle.

Claims

1. a novel valve rod axle sealing structure, its structure comprises: stem shaft, compression secondary circle, valve upper cover plate, y-shaped ring and O-ring seals,

Described y-shaped ring, formed by Furtulon materials processing, shape is as Y shape;

By in the groove of described O-ring seals press-in y-shaped ring, can, according to actual required press-in many O-ring seals, the superposition thickness of O-ring seals be made to be not less than the depth of groove of y-shaped ring.

2. a kind of novel valve rod axle sealing structure according to claim 1, it is characterized in that, described seal element selects Furtulon material to prepare.