Double-cavity type gas drain valve

Abstract

The invention relates to the technical field of gas drain valves, in particular to a double-cavity type gas drain valve. The gas drain valve comprises a medium valve cover, a medium valve body, a drain valve cover, a drain valve body, a liquid channel and a balance pipe, wherein the medium valve cover is hermetically mounted on the medium valve body so as to form a medium valve cavity in an assembled manner, the drain valve cover is hermetically mounted on the drain valve body so as to form a drain valve cavity in an assembled manner, and the liquid channel is arranged between the medium valvecavity and the drain valve cavity; the liquid channel is provided with a lower inlet through hole communicating with the medium valve cavity and a higher outlet through hole communicating with the drain valve cavity; and the balance is located at the tops of the medium valve cavity and of the drain valve cavity so as to enable the medium valve cavity to communicate with the drain valve cavity. Byadopting the design structure that the liquid channel is in communication with the medium valve cavity and the drain valve cavity, under the action of the water seal principle of the liquid channel,oil stains with different densities in a medium can be automatically separated from a condensed liquid during working, and the oil stains are isolated in the medium valve cavity, so that the oil stains are effectively prevented from flowing into the drain valve cavity, and the reliable action and stable sealing performance of the drain valve are ensured.

Description

technical field [0001] The invention relates to the field of gas liquid discharge valves, in particular to a double-cavity gas liquid discharge valve. Background technique [0002] The existing gas drain valve is a valve that automatically discharges liquid and prevents air or gas from leaking, and is also called: condensate drain valve, gas trap, air trap, etc. In actual working conditions, the medium in the valve cavity is a mixture of gas, oil, and liquid, especially the oil in the medium is easy to stick to the opening and closing parts in the valve cavity, such as floats or buckets, valve cores and valves. The valve seat hole will affect the switching action and service life of the opening and closing parts during operation, and the liquid discharge valve will not drain or leak air, the working reliability is poor, and the sealing performance is unstable. Contents of the invention [0003] The purpose of the present invention is to solve the above-mentioned problems ...

AI Technical Summary

Problems solved by technology

In actual working conditions, the medium in the valve cavity is a mixture of gas, oil, and liquid, especially the oil in the medium is easy to stick to the opening and closing parts in the valve cavity, such as floats or buckets, valve cores and valves. The valve seat hole will affect the switching action and service life of the opening and closing parts during operation, and the drain valve will cause no drainage or air leakage, poor working reliability and unstable sealing performance

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