Electromagnetic pilot-operated type high pressure double-channel control valve

Abstract

The invention discloses an electromagnetic pilot-operated type high pressure double-channel control valve which is hermetically assembled by three valve bodies sequentially. The left valve body is connected with an electromagnetic valve. Meanwhile, a work gas inlet, an atmosphere channel and a left high pressure gas chamber are further arranged. The left high pressure gas chamber is intermittently connected with the work gas inlet and the atmosphere channel through the electromagnetic valve, respectively. The middle valve body is provided with a gas inlet and a first gas outlet. The right valve body is provided with a second gas outlet and a right high pressure gas chamber. The middle valve body and the right valve body are provided with left and right stepped shaft valve cores which become thinner gradually from outside to inside. The small end faces of the left and right stepped shaft valve cores are contacted with a sealed sphere. The work gas inlet is communicated with the left and right high pressure gas chambers respectively through two channels. The high pressure gas entering from to the work gas inlet is normally open. The thrusts applied to the left and right stepped shaft valve cores are always different by controlling the valve core of the electromagnetic valve to push the sealed sphere left and right to switch connection between the gas inlet and the first gas outlet or between the gas inlet and the second gas outlet.

Description

technical field [0001] The invention relates to a high-pressure gas or liquid control device, in particular to an electromagnetic pilot type high-pressure two-channel control valve. Background technique [0002] In the field of compressed air and hydraulic pressure, it is often encountered that one input source outputs to two output ports. General equipment must use 2 solenoid valves, 2 pneumatic actuators and 2 high-pressure ball valves to cooperate with each other to achieve the purpose of opening or closing each circuit. The opening and closing of the two high-pressure ball valves are controlled by solenoid valves and pneumatic actuators. One of the high-pressure ball valves is closed, and the other high-pressure ball valve is opened. At this time, one air inlet and outlet channel is connected, and the other air inlet and outlet channel is closed. The high-pressure gas or liquid enters the subsequent system to work through the connected channel. Since the input source, ...

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide an electromagnetic pilot-operated high-pressure two-channel control valve that integrates the functions of two sets of electromagnetic valves, pneumatic actuators and high-pressure ball valves, which not only overcomes the existing control valves that are too complicated and external It has the disadvantage of many connecting pipes, and solves the problem of single function and unstable working state of the existing electromagnetic pilot two-position three-way valve

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