Automatic pipeline cut-off device free of raw material tape winding

Abstract

The invention relates to an automatic pipeline cut-off device free of raw material tape winding. The automatic pipeline cut-off device is applied to a fluid pipeline system and is simple in structure,easy to manufacture, low in cost and free of electric power and any precise facility. Opening of a cut-off lifting cover is controlled through an ejection piece on a fluid using device, closing of the cut-off lifting cover is controlled through the fluid water pressure effect in a fluid pipeline, and the cut-off effect is good. The larger the fluid water pressure in the fluid pipeline is, the larger the sealing pressure intensity of the cut-off lifting cover is, and the better the sealing effect is. Meanwhile, raw material tape winding is not needed in the matched connection process of the fluid using device and a pipeline forming piece, only the fluid using device needs to be directly screwed in the pipeline forming piece, at the moment, the ejection piece tightly presses an anti-leakagesealing ring, the anti-leakage sealing ring seals the fluid inlet end of the fluid using device, the multi-point sealing effect is achieved, fluid is prevented from leaking from the fluid inlet end of the fluid using device, and therefore the effect of preventing fluid leakage is achieved without raw material tape winding.

Description

technical field [0001] The invention belongs to the technical field of valves, and in particular relates to a pipeline automatic shut-off device free from wrapping raw material tapes. Background technique [0002] In the fluid pipeline system, the valve is the control element, its main function is to isolate the equipment and the pipeline system, regulate the flow, prevent backflow, adjust and discharge the pressure, and can be used to control water, various corrosive media, mud, oil, liquid metal And the flow of various types of fluids such as radioactive media. When the fluid pipeline system is in use, the fluid supply is often in a normally open state, and the pipeline is always filled with fluid. When the valve is damaged and needs to be replaced, it is very inconvenient. First, close the main liquid inlet valve of the fluid, disconnect the fluid supply in the pipeline, then remove the damaged valve, drain the fluid in the pipeline, and finally replace it with a new val...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a pipeline automatic shut-off device without wrapping raw material tape, which aims to solve the unreasonable structure of the fluid pipeline system in the prior art, the maintenance process is troublesome to operate, and the maintenance process wastes a lot of fluid resources, which cannot meet Urgent technical issues at this stage

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