Electromagnetic valve definition and principle of the electromagnetic valve is used to control the fluid automation components, belonging to the actuator; Is not limited to hydraulic, pneumatic. Solenoid valve is used to control the hydraulic flow direction, factory machinery is generally controlled by hydraulic steel, so it would use the solenoid Industrial Valves. Works: solenoid valve has closed cavity, in the different position of the open hole, each hole leads to different tubing, cavity valve is among, both sides are two electromagnets, which face the magnet coil electricity Industrial Valves will be attracted to which side, by controlling the movement of the valve body blocked or leakage of different discharge of oil hole, and the oil hole is always open, hydraulic fluid will enter the different oil drain, and then through the oil pressure to push oil just the pistons, piston drives the piston rod, piston rod drive mechanism. So that by controlling the electric current of the electromagnet to control the mechanical movement. Categories: (1) direct acting solenoid valve principle: electricity, electromagnetic coil to produce electromagnetic force to shut down from the seat lift, the valve opening; Power, the electromagnetic force disappears, press on the seat, spring to close the valve closed. Features: in a vacuum, negative pressure, can work properly when the zero pressure, but size is generally not more than 25 mm. Direct acting solenoid valve (2) the distribution principle: it is a direct acting and pilot operated the principle of combining, when the inlet and outlet no pressure difference, after electrify, electromagnetic force directly to the pilot valve and main valve closed, in turn, lift, the valve opens. When the inlet and outlet at startup pressure difference, after electrify, the electromagnetic pilot valve, main valve inferior vena pressure rising, the cavity pressure drop, which using differential pressure to the main valve opened up; Power cuts, pilot valve using the spring force or medium pressure push off, move down, to close the valve. Features: on the zero differential pressure or vacuum and high pressure, to * action, but power is larger, requirements must be installed level. (3) the principle of electromagnetic valve: with electricity, electromagnetic force open the pilot hole, the chamber pressure drops rapidly, in closed form around the high low differential pressure, fluid pressure push close up, the valve open; Power off, the spring force to close the guide hole, inlet pressure chamber through the by pass hole quickly in closing valve using a form around the high differential pressure, fluid pressure push close move down, close the valve. Features: high fluid pressure range limit, can be arbitrary installation ( Need to customize) But fluid differential pressure conditions must be met. Should be considered in using some of its features, such as dielectric properties, environmental temperature, working frequency, power and other factors. Electromagnetic Industrial Valves WWW. bjdfm。 . net steam solenoid valve WWW. omzkfm。 Com water electromagnetic valve WWW. bjdfm。 净
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