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Valve rod irrotational structure of corrugated pipe check valve

A technology of bellows stop valve and rotating structure, which is applied in the direction of valve operation/release device, lift valve, valve details, etc., can solve the problems of single structure and short service life, and achieve excellent sealing performance, protection resistance, Effect of reducing friction and wear

Inactive Publication Date: 2014-10-08
JIANGSU XINGHE VALVE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The current bellows globe valve in my country has a single structure and can only be used under the working conditions of low pressure, low temperature and safe medium, and has a short service life. It is not suitable for high temperature, high pressure and pipelines that are dangerous or may cause harm to the environment and human life. with place

Method used

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  • Valve rod irrotational structure of corrugated pipe check valve
  • Valve rod irrotational structure of corrugated pipe check valve
  • Valve rod irrotational structure of corrugated pipe check valve

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0025] 1. A valve stem non-rotating structure of a bellows globe valve, consisting of a valve body (1), a valve stem (2), a metal bellows (3), a valve seat (4), a stop flange (7), a valve cover (6), packing (10), compression bearing shell (11), opening and closing screw sleeve (13), hand wheel or handle (14), etc., it is characterized in that: one end of the metal bellows (3) is connected with the valve stem (2) Welding and sealing, the other end is welded and sealed with the anti-rotation flange (7), and the inner eccentric hole of the anti-rotation flange (7) cooperates with the eccentricity of the valve stem (2) to form a bellows assembly. Put it in the valve seat (4), and the upper part of the stop flange (7) passes through the outer part of the valve seat (4) to weld and seal each other; the upper end of the valve seat (4) has a gasket (8), and the...

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Abstract

A valve rod irrotational structure of a corrugated pipe check valve comprises a valve body, a valve rod, a metal corrugated pipe, a valve base, an anti-rotation flange, a valve cover, filler, a pressing bearing shell, an opening-closing threaded sleeve, a hand wheel or a handle and the like. The valve rod irrotational structure is characterized in that one end of the metal corrugated pipe is welded to the valve rod in a sealed mode, the other end of the metal corrugated pipe is welded to the anti-rotation flange in a sealed mode, an inner offset circle hole of the anti-rotation flange is matched with an offset circle of the valve rod, a corrugated pipe assembly is formed and arranged amount the valve body, the valve base, the valve cover, the filler, the pressing bearing shell and the opening-closing threaded sleeve, the opening-closing threaded sleeve drives the valve rod to move up and down linearly without rotation, when a valve is opened, stopping reverse sealing, metal corrugated pipe shielding sealing and filler sealing are achieved, and accordingly the corrugated pipe check valve can be used in high-temperature and high-pressure environments and is high in reliability.

Description

technical field [0001] The invention relates to the design and manufacture of valves, which are widely used in the opening and closing and control devices of poisonous, radioactive, inflammable and explosive and other harmful media in industrial pipelines and other pipelines. Background technique [0002] The current bellows globe valve in my country has a single structure and can only be used under the working conditions of low pressure, low temperature and safe medium, and has a short service life. It is not suitable for high temperature, high pressure and pipelines that are dangerous or may cause harm to the environment and human life. and places. In order to overcome the disadvantages, a bellows stop valve with high temperature, high pressure and high reliability performance is provided, which is sealed with a metal bellows peripheral pressure screen, and the valve stem does not rotate and moves up and down in a straight line. Contents of the invention [0003] The ob...

Claims

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Application Information

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IPC IPC(8): F16K1/32F16K1/46F16K41/02
CPCF16K1/50F16K1/42F16K31/44F16K41/10
Inventor 朱义芳
Owner JIANGSU XINGHE VALVE
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