The principle and structure

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Has been developed a variety of principle and structure of the form of electrical / fluid or electric / gas high-speed switching solenoid valves have applications, but in the country has not yet reached the stage to promote it. As for seve ral typical structure described below.
(1) of the electromagnet, and a combination of slide valve. This form is used more in the switch, coil electromagnet drive the movement of the poppet jelpc , the poppet valve to open, the spring on the armature, the poppet valve to close.
(2) floating plate and nozzle combination. Usually have two coils to control the floating plate movement, thus changing the distance between the nozzle flapper, on or off, to form different working conditions.
(3) The combination of the torque motor and putting the ball valve. Torque motor-driven putter action to control the start of the ball valve.
(4) of the piezoelectric high-speed switchingpneumatic accessory . Electricity made by the PZT piezoelectric crystals and other materials - displacement converter. Inverse piezoelectric properties of piezoelectric crystals (inverse piezoelectric the imposition of a certain voltage, the material will produce a shift in one direction) to promote the spool work. Due to the displacement limit of the piezoelectric material, the valve flow is usually very small, but the relatively high frequency.
The working principle, Solenoid valve and solenoid valve is no essential difference, but high-speed switching solenoid valve due to its quality of the spool and travel is very small, and thus to a very high response rate to track the control signal, to facilitate computer and a variety of single-board computers for real-time control.