Differential pressure valve capable of automatically adjusting environments

Abstract

The invention relates to a differential pressure valve capable of automatically adjusting environments, which comprises an upper valve body, a middle valve body and a lower valve body, wherein an upper diaphragm is arranged between the upper valve body and the middle valve body in a sealing mode, and a lower diaphragm is arranged between the middle valve body and the lower valve body in a sealing mode; the upper part of the middle valve body is provided with an overflow gate; the middle valve body is internally provided with a hollow vertically-installed bi-diaphragm connecting rod; and an output pressure feedback port is arranged on the lower valve body. The differential pressure valve operates in a closed environment, can automatically adjust output pressure along with the pressure variation of a use environment (ventilation environment), enables the pre-adjusted effective working pressure value to be unchanged, and is mainly used in pneumatic machineries (air cylinders, air motors and the like) operating in closed environments.

Description

technical field [0001] The invention relates to a differential pressure valve, in particular to an automatic adjustment environment differential pressure valve. Background technique [0002] Using compressed gas as the power source, the air pressure-driven machinery working in a closed environment (or the pneumatic machinery working at different depths underwater needs to exhaust outward), in order to overcome the increasing exhaust pressure, it usually needs to use a very high input In this way, not only the energy consumption will increase, but also the exhaust pressure in the closed environment will rise rapidly, which will make the working conditions fluctuate greatly. At present, there is no pneumatic pressure regulating device designed on the market that can automatically adjust the output pressure simultaneously with changes in the operating environment (exhaust environment) pressure, so that the effective working pressure remains unchanged. Contents of the inventio...

AI Technical Summary

Problems solved by technology

[0002] Using compressed gas as the power source, the air pressure-driven machinery working in a closed environment (or the pneumatic machinery working at different depths underwater needs to exhaust outward), in order to overcome the increasing exhaust pressure, it usually needs to use a very high input In this way, not only the energy consumption will increase, but also the exhaust pressure in the closed environment will rise rapidly, which will make the working conditions fluctuate greatly.

At present, there is no pneumatic pressure regulating device designed on the market that can automatically adjust the output pressure at the same time as the pressure of the operating environment (exhaust environment) changes, so that the effective working pressure remains unchanged.

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