Kitchen fire extinguishing device -water solenoid valve working principle: there is a closed cavity in the solenoid valve, and there are through holes in different positions, each hole leads to a different oil pipe, the middle of the cavity is a valve, and two electromagnets on both sides Which side of the magnet coil is energized to the valve body, which will block or leak different oil drain holes by controlling the movement of the valve body, and the oil inlet holes are always open, and the hydraulic oil will enter different The oil drain pipe then pushes the oily piston through the pressure of the oil. The piston drives the piston rod, and the piston rod drives the mechanical device. In this way, the mechanical movement is controlled by controlling the current of the electromagnet.
Classification-Direct acting water solenoid valve:
Principle: When energized, the electromagnetic coil generates electromagnetic force to lift the closing member from the valve seat, and the valve opens; when the power is off, the electromagnetic force disappears, the spring presses the closing member on the valve seat, and the valve closes.
Features: It can work normally under vacuum, negative pressure and zero pressure, but the diameter is generally not more than 25mm.