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A sealing structure for sealing valve

A sealing structure and sealing valve technology, applied in the field of ball valve sealing, can solve the problems of sealing surface leakage, medium sealing side and outer ring leakage, etc., and achieve the effect of strengthening sealing ability, improving sealing effect and firm fixing

Active Publication Date: 2019-04-09
NEWAY VALVE SUZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the problem that the sealing surface between the inner ring of the sealing ring and the holder is prone to leakage under the action of the medium force in the prior art, such as Figure 9 As shown, the medium will leak through the inner ring, sealing side and outer ring of the sealing ring in sequence, thus providing a sealing structure for sealing the valve,

Method used

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  • A sealing structure for sealing valve
  • A sealing structure for sealing valve
  • A sealing structure for sealing valve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Independent claim 1 describes a sealing structure for sealing valves,

[0054] Such as figure 1 As shown, the sealing valve includes: a valve core 1, a valve body 2, and a retainer 3 arranged between the valve core 1 and the valve body 2, the above-mentioned valve core 1 is a spherical valve core; the sealing structure includes:

[0055] Such as figure 2 As shown, the sealing ring 4 is set in the vertical direction between the retainer 3 and the valve core 1, and is snapped into the annular groove of the inner cavity of the retainer 3; the sealing ring 4 faces the valve spool 1 is biased and sealingly engaged with said spool 1;

[0056] The sealing ring 4 is in interference fit with the annular groove, and an exhaust groove is provided between the inner ring and the annular groove for discharging the air in the annular groove during the installation of the sealing ring 4 .

[0057] The above-mentioned sealing ring is arranged in the annular groove of the inner cavi...

Embodiment 2

[0077] Such as figure 1 As shown, the sealing valve includes: a valve core 1, a valve body 2, and a retainer 3 arranged between the valve core 1 and the valve body 2, the above-mentioned valve core 1 is a spherical valve core; the sealing structure includes:

[0078] Such as figure 2 As shown, the sealing ring 4 is set in the vertical direction between the retainer 3 and the valve core 1, and is snapped into the annular groove of the inner cavity of the retainer 3; the sealing ring 4 faces the valve spool 1 is biased and sealingly engaged with said spool 1;

[0079] The sealing ring 4 is in interference fit with the annular groove, and an exhaust groove is provided between the inner ring and the annular groove for discharging the air in the annular groove during the installation of the sealing ring 4 .

[0080] The above-mentioned sealing ring is arranged in the annular groove of the inner cavity of the retainer, and is biased and sealed toward the spherical valve core, so...

Embodiment 3

[0100] Such as figure 1 As shown, the sealing valve includes: a valve core 1, a valve body 2, and a retainer 3 arranged between the valve core 1 and the valve body 2, the above-mentioned valve core 1 is a spherical valve core; the sealing structure includes:

[0101] Such as figure 2 As shown, the sealing ring 4 is set in the vertical direction between the retainer 3 and the valve core 1, and is snapped into the annular groove of the inner cavity of the retainer 3; the sealing ring 4 faces the valve spool 1 is biased and sealingly engaged with said spool 1;

[0102] The sealing ring 4 is in interference fit with the annular groove, and an exhaust groove is provided between the inner ring and the annular groove for discharging the air in the annular groove during the installation of the sealing ring 4 .

[0103] The above-mentioned sealing ring is arranged in the annular groove of the inner cavity of the retainer, and is biased and sealed toward the spherical valve core, so...

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Abstract

The invention provides a sealing structure for a seal valve. The seal valve comprises a valve core, a valve body and a fixing device arranged between the valve core and the valve body. The sealing structure comprises a sealing ring arranged between the fixing device and the valve core in the vertical direction and clamped in an annular groove in a cavity of the fixing device; the sealing ring deflects towards the valve core and in seal joint with the valve core; the sealing ring is in interference fit with the annular groove, and an exhaust groove for exhausting air in the annular groove during mounting of the sealing ring is formed between an inner ring of the sealing ring and the annular groove.

Description

technical field [0001] The invention relates to the technical field of ball valve sealing, in particular to a sealing structure for sealing a sealing valve. Background technique [0002] Ball valve is defined in "Valve Glossary" as: a valve whose opening and closing part (ball) is driven by the valve stem and rotates around the axis of the ball valve. It is mainly used for cutting, distributing and changing the flow direction of the medium. 90-degree operation and a small rotational torque can be closed tightly. The sealing ring is an important part of the ball valve, which is a seal set between the valve seat and the ball to prevent the medium in the ball valve from leaking. [0003] The prior art, such as the patent document with the publication number CN201034183, discloses a soft-seal fixed ball valve seat structure, such as Figure 10 As shown, it includes a valve seat body, a sealing ring groove is axially set on the end surface of the valve seat body near the sphere ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K5/06F16K5/20F16K5/08
CPCF16K5/0689F16K5/08F16K5/20
Inventor 丁城王建华周金荣陈鉴
Owner NEWAY VALVE SUZHOU
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