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Durable cylinder valve

A durable, bottle valve technology, applied in valve details, valve device, valve shell structure, etc., can solve the problems of short service life, large valve stem holding force, easy damage to seals, etc., to achieve a simple structure, The effect of good pressure cap centering and durable seal

Inactive Publication Date: 2015-08-12
YANGZHOU ANYI VALVE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Due to its special application environment, the bottle valve has high requirements on its sealing performance; therefore, a pressure cap is often installed between the valve body and the valve stem, but the existing structure generally directly sets the pressure cap on the outside of the valve stem, so its The coaxiality between the valve body and the valve stem cannot be guaranteed, and it often has a large holding force on the valve stem; therefore, the seal in the pressure cap is easily damaged and the service life is not long, so it needs to be improved

Method used

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Embodiment Construction

[0017] The present invention includes a valve body 1, a hand wheel is installed on the upper part of the valve body 1 and a valve stem 2 driven by the hand wheel extends into the valve body 1;

[0018] The valve body 1 is provided with a pressure cap 3 sleeved on the outside of the valve stem 2. The outer ring surface of the lower end of the pressure cap 3 is an outer tapered surface 31, and the inner ring surface is a smooth outer ring surface 31. transitional outer arcuate surface 32;

[0019] Correspondingly, the valve body 1 is provided with an inner tapered surface 11 supporting the outer tapered surface 31 and an inner stepped surface 12 supporting the outer circular arc surface 32 .

[0020] A seal 4 is provided between the pressure cap 3 and the valve stem 2 .

[0021] The pressure cap 3 and the valve body 1 are connected by threads.

[0022] The valve stem 2 is provided with an annular boss 21 at the lower part of the pressure cap 3 , and a sealing ring 5 is provide...

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Abstract

The invention relates to a durable cylinder valve comprising a valve body (1). The upper part of the valve body (1) is provided with a hand wheel and a valve rod (2) which is driven by the hand wheel and extends into the valve body (1). The valve body (1) is internally provided with a pressing cap (3) which sleeves the external part of the valve rod (2). The external ring surface of the lower end part of the pressing cap (3) is an external conical surface (31), and the internal ring surface is an external arc surface (32), wherein smooth transition is performed between the external conical surface (31) and the external arc surface (32). Correspondingly, the valve body (1) is provided with an internal conical surface (11) which supports the external conical surface (31) and an internal step surface (12) which supports the external arc surface (32). The durable cylinder valve is simple in structure. The small conical surface and the step surface are adopted for hard sealing, the pressing cap is great in centering and the valve rod is enabled to be more concentric relative to the valve body so that a sealing member arranged in the pressing cap is enabled to be more durable.

Description

technical field [0001] The invention relates to a durable bottle valve, which belongs to the technical field of bottle valves. Background technique [0002] Due to its special application environment, the bottle valve has high requirements on its sealing performance; therefore, a pressure cap is often installed between the valve body and the valve stem, but the existing structure generally directly sets the pressure cap on the outside of the valve stem, so its The coaxiality between the valve body and the valve stem cannot be guaranteed, and it often has a large holding force on the valve stem; therefore, the seal in the pressure cap is easily damaged and the service life is not long, so it needs to be improved . Contents of the invention [0003] In view of the above defects, the present invention aims to provide a durable bottle valve with simple structure and improved sealing performance and durability of the pressure cap. [0004] The technical solution adopted by th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K27/08F16K27/00F16K41/02
CPCF16K27/08F16K27/00F16K41/02
Inventor 朱平王干友左锦山
Owner YANGZHOU ANYI VALVE
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