Working principle of solenoid valve:
There is a closed cavity in the
Pneumatic Solenoid Valve. There are through holes in different positions. Each hole of the pneumatic solenoid valve leads to different gas pipes. There is a valve in the middle of the cavity and two electromagnets on both sides. The valve body will be attracted to which side if the magnet coil is electrified.
The pneumatic solenoid valve blocks or leaks different exhaust holes by controlling the movement of the valve body, and the air inlet is normally open. High pressure gas will enter different exhaust pipes, and then push the piston of the cylinder through the air pressure of the pneumatic solenoid valve. In this way, the mechanical movement of the whole solenoid valve is controlled by controlling the current of the electromagnet of the pneumatic solenoid valve.
The electrical conversion module converts the electrical signal into the pneumatic signal, and the electrical signal input controls the pneumatic output. The most commonly used electro pneumatic conversion component is solenoid activated valves.
The solenoid valve is not only the interface between the electrical control part and the pneumatic executive part, but also the interface with the air source system. The solenoid valve receives the command to release, stop or change the flow direction of compressed air.
In the electro pneumatic control, the functions of solenoid valve are: direction control of pneumatic actuator, on / off switch control, or / not / and logic control. In the family of solenoid valves, the most important one is solenoid operated directional control valves.
Wiring:
Two phase direct connection is OK, three-phase only need to connect zero line and live line.
Solenoid valve is used to control the direction of hydraulic flow, the mechanical device of the factory is generally controlled by the hydraulic cylinder, so the solenoid valve will be used.
