Pilot type pneumatic solenoid valve

Abstract

The invention relates to a pilot type pneumatic solenoid valve. The pilot type pneumatic solenoid valve comprises a solenoid valve component, a gas pushing rod, a bracket, a gas valve core, a liquid valve core, a filtering net component, a gas path spring, a connecting rod, a gas connecting nozzle, liquid path connecting nozzles, liquid path springs, liquid path pushing rods, liquid shell Y, a liquid shell R, sealing rubber rings and rubber mats; a magnetic valve in the solenoid valve component is moved to the left side under the action of electromagnetic force; the gas pushing rod, the connecting rod and the gas valve are pushed to move to the left side together so that pilot gas enters the cavity of the bracket; through holes which are distributed uniformly are formed in the cavity of the bracket; the pilot gas makes the rubber mats on the two sides expand by a certain distance from the through holes in the cavity of the bracket; under the action of the pressure of the pilot gas, theliquid pushing rods on the two sides of the bracket respectively push the liquid valve cores on the two sides to move to open liquid inlets in the two sides, so that a liquid medium flows to outlets.The pilot type pneumatic solenoid valve has the characteristics of compact structure, light weight, high synchronism, short response time and the like, and is suitable for propulsion systems of satellites, weapons and the like.

Description

technical field [0001] The invention relates to a solenoid valve, in particular to a pilot type pneumatic solenoid valve. Background technique [0002] Pilot-operated pneumatic solenoid valve is an important part of attitude and orbit control systems in satellites, weapons, and electric propulsion fields. In the traditional two-component engine, two direct-acting solenoid valves are usually used to provide fuel and oxidizer respectively, which leads to not only heavy mass of the whole engine system, but also low synchronization of opening and closing of the two solenoid valves, especially The two-component engine with a large flow rate uses two direct-acting solenoid valves, and the response time is also very slow. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a pilot solenoid valve, which has the characteristics of compact structure, light weight, high synchronization and fast response time, and is suitable f...

AI Technical Summary

Problems solved by technology

In the traditional two-component engine, two direct-acting solenoid valves are usually used to provide fuel and oxidizer respectively, which leads to not only heavy mass of the whole engine system, but also low synchronization of opening and closing of the two solenoid valves, especially The two-component engine with large flow rate uses two direct-acting solenoid valves, and the response time is also very slow

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