Key 'relay type solenoid valve' application and working principle

Key 'relay type solenoid valve' application and working principle of mechanical BBS factory director of solenoid valve is used to control fluid automation components, belonging to the actuator; Is not limited to hydraulic, pneumatic, solenoid valve used to control the hydraulic flow direction, factory machinery is generally controlled by hydraulic steel, so it would use the solenoid valve. Working principle of the 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 body 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. Classification principle of direct acting solenoid valve power, the 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. Characteristics in a vacuum, negative pressure, can work properly when the zero pressure, but size is generally not more than the MM. Distribution principle of direct acting solenoid valve 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 combine small pilot valve and main valve closed in 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. Characteristics on the zero differential pressure or vacuum and high pressure, to * action, but power is larger, requirements must be installed level. Principle guiding type solenoid valve power, the 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. The upper limit characteristics of the fluid pressure is higher, can be arbitrary installation ( Need to customize) But fluid differential pressure conditions must be met. Choice need to pay attention to when using the characteristics of the first page of the first page, pp