Novel water seal adjustment valve

Abstract

The invention discloses a novel water seal adjustment valve, relates to the field of valves, and discloses a novel water seal adjustment valve which is exquisite in structure, convenient to use, high in use effect, and capable of achieving coal gas on-off and flow rate control through accurate control for water inlet-outlet quantities and rapid blow-down for compressed air. The novel water seal adjustment valve comprises a gastight tank, a water tank and a central tube, wherein the gastight tank is arranged at one side of the water tank, the bottoms of the gastight tank and the water tank are communicated, the top of the gastight tank is communicated with a water inlet tube, and the bottom of the water tank is communicated with a water outlet tube; the central tube is vertically arranged in the water tank, the upper part of the central tube stretches out of the top surface of the water tank, a gas inlet port is arranged in the top opening of the central tube, and a gas outlet port located above the bottom opening of the central tube is arranged in the upper part of the water tank; and the top of the gastight tank is further communicated with a three-position three-way solenoid gas valve, a gas pressure gauge used for measuring a gas pressure in the gastight tank is arranged at the top of the gastight tank, and the three-position three-way solenoid gas valve is communicated with a gas source. The novel water seal adjustment valve has the characteristics of being exquisite in structure, convenient to use, and high in use effect.

Description

technical field [0001] The invention relates to the field of valves, in particular to a water-seal regulating valve used for metallurgical power gas pipelines. Background technique [0002] At present, water seal valves are usually used in metallurgical power gas pipelines to prevent backflow or prevent leakage. The structure of traditional water-sealed valves is mostly as shown in a document named "A Water-sealed Valve" with the application number "201320229866.5" announced by the National Bureau on September 24, 2014. This type of water-sealed valve is mainly used in valves. Including the tank body, air inlet pipe and air outlet, wherein the air inlet pipe extends into the lower part of the tank body, and when the valve is closed, water is injected into the tank body so that the liquid level is between the bottom port of the air inlet pipe and the air outlet port, thereby passing water pressure The bottom opening of the intake pipe is sealed, and at the same time, it has ...

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Problems solved by technology

[0003] However, this type of water seal valve has extremely poor accuracy in controlling the liquid level in the tank (or in other words, the control of the amount of water entering and exiting), and the liquid level often appears too high or too low; among them, if the liquid level If the height is too high, it will cause waste of resources and increase of working time, prolong the working cycle and reduce the working efficiency; if the liquid level is too low, at this time, the water between the bottom of the intake pipe and the liquid level If the pressure is lower than the air pressure in the intake pipe, it will cause gas leakage and bring great safety hazards

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