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Valve cap of high-vacuum baffle valve

A baffle valve, high vacuum technology, applied in the direction of valve details, valve device, valve shell structure, etc., can solve the problems of increased shear force between threads, large valve opening and closing torque, laborious operation, etc., to prolong the service life, Reduce the shear force and solve the effect of laborious operation

Inactive Publication Date: 2011-09-14
ZHANGJIAGANG FURUI SPECIAL EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, when the high-vacuum baffle valve is opened and closed, the above-mentioned closed space cannot absorb or discharge gas from the outside, thus greatly increasing the shear force between the threads, and there are generally problems such as large valve opening and closing torque and laborious operation.

Method used

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  • Valve cap of high-vacuum baffle valve
  • Valve cap of high-vacuum baffle valve
  • Valve cap of high-vacuum baffle valve

Examples

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Embodiment Construction

[0011] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0012] Such as figure 1 As shown, the bonnet of the high vacuum baffle valve of the present invention includes: a bonnet body 10, the bonnet body 10 is provided with an outwardly protruding 2, and a valve stem threaded hole 3 is provided in the middle part of the bonnet body 10. The ventilation hole includes the inner hole 4 opened along the direction of the valve stem threaded hole 3 and the outer hole 5 arranged radially; moreover, by reducing the diameter of the outer hole 5 and increasing the number of the outer hole 5, it is ensured that In order to ensure unimpeded ventilation, it can also reduce harmful substances such as dust from entering the valve body.

[0013] Such as figure 2 As shown, in the actual use of the high vacuum flapper valve with the bonnet 1 installed, the vent hole composed of the inner hole 4 and the outer hole 5 ...

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PUM

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Abstract

The invention discloses a valve cap of a high-vacuum baffle valve, which can greatly decrease on / off moment of the valve. The valve cap comprises a valve cap body, wherein the valve cap body is provided with a valve rod screwed hole and an air vent passing through the valve cap body. According to the invention, the air vent arranged on the valve cap can change the original relatively closed space into an open space communicated to the atmosphere, therefore air can be absorbed or discharged freely when the valve is opened or closed, shear stress among threads can be greatly reduced and the problem of difficult operation for opening and closing the valve can be solved.

Description

technical field [0001] The invention relates to a high vacuum baffle valve, in particular to a valve cover of the high vacuum baffle valve. Background technique [0002] At present, after the traditional high vacuum flapper valve is assembled with the valve cover and stem assembly, a relatively closed space (inner cavity) is formed inside the high vacuum flapper valve. At the same time, in order to increase the sealing effect, the high vacuum flapper valve , usually adopts the bellows seal structure, the bellows is always in a compressed state, so that the thread of the valve stem is tightly engaged with the thread on the bonnet. In this way, when the high-vacuum flapper valve is opened and closed, the above-mentioned closed space cannot absorb or discharge gas from the outside, thereby greatly increasing the shear force between the threads, and there are generally problems such as large valve opening and closing torque and laborious operation. Contents of the invention ...

Claims

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Application Information

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IPC IPC(8): F16K27/12F16K51/02
Inventor 胡晨曦刘永平郭春英
Owner ZHANGJIAGANG FURUI SPECIAL EQUIP CO LTD
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