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Process for manufacturing automatic draw-off valve

A manufacturing process and automatic drainage technology, which is applied in the direction of diaphragm valves, valve devices, engine components, etc., to achieve the effect of reasonable process, overcoming complex structure and simple structure

Inactive Publication Date: 2008-01-02
SHANGHAI GUANWEI FIRE FIGHTING SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Due to the adoption of the above scheme, it is not difficult to draw the following conclusions: the process of the present invention is reasonable, the concept is ingenious, and the automatic drain valve manufactured directly uses the elasticity and arch of the seal material as the back pressure, makes the best use of everything, has a simple structure, and effectively It overcomes the defects of complex structure of traditional technology and has great promotion value

Method used

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  • Process for manufacturing automatic draw-off valve

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Embodiment Construction

[0008] A manufacturing process of an automatic drain valve mainly includes the following steps: the sealing ring of the joint of the drain valve provides an arched sealing member connected with it. The structure of the automatic drain valve manufactured by the present invention will be further described in detail below in conjunction with the accompanying drawings. An automatic drain valve is mainly composed of a valve body 3 and a drain valve joint 1 , the sealing ring of the drain valve joint 1 is connected with an arched seal 2 . The working principle is briefly described below. When water enters the valve body, the water pressure in the body rises, and the arched seal deforms to block the outlet of the drain valve joint. When the valve body is closed, the water pressure in the body drops, the arch seal recovers, and the drain valve joint drains water.

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Abstract

The invention discloses a preparing craft of automatic drainage valve, which comprises the following steps: providing a vaulted sealing element with the seal ring of the drainage valve joint; connecting the vaulted sealing element to the seal ring of the drainage valve joint. This invention possesses reasonable craft, good idea and simple structure, which can be spreaded widely.

Description

technical field [0001] The invention relates to the technical field of valve manufacturing, in particular to a manufacturing process of a drain valve. Background technique [0002] Currently known fire hydrant automatic drain valves basically utilize springs to provide back pressure. When the water pressure in the valve body is high, the water pressure overcomes the spring force, and when the water pressure is low, the spring force overcomes the water pressure, thereby automatically opening and closing the drain valve, and its structure is complicated. Contents of the invention [0003] The object of the present invention is to provide a manufacturing process of an automatic drain valve that can effectively overcome the above-mentioned defects and utilize an arched seal to provide back pressure. [0004] To achieve the above object, the present invention adopts the following technical solution: a manufacturing process of an automatic drain valve, which mainly includes the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K7/12
Inventor 管彦信
Owner SHANGHAI GUANWEI FIRE FIGHTING SYST