The working principle of flange solenoid valve

The flange solenoid valve is a pilot-operated solenoid valve with a secondary opening composed of two major components: the auxiliary valve and the main valve. The opening and closing of the auxiliary valve is used to control the opening and closing of the main valve. According to the switch state when the power is off, it can be divided into normally closed solenoid valve and normally open solenoid valve. Normally closed solenoid valve, when the power is off, the auxiliary valve port is closed, and the main valve is open. When the electric signal enters the pilot valve coil, the movable iron core is sucked up by the electromagnetic force to open the auxiliary valve port, and the main valve cup is inside The pressure disappears quickly, and the medium pressure lifts the main valve valve cup, opening the main valve port, and the working medium is hard and circulated. But when the electric signal disappears, the movable iron core is reset and the auxiliary valve port is closed, and the working medium enters the valve cup from the balance hole. When the pressure tends to be balanced, the main valve spring, the weight of the valve cup and the medium pressure make the valve cup fall. Move, tightly seal the main valve port, and the valve is closed again. Normally open solenoid valve, in the normal position of power failure, the auxiliary valve port is opened and the main valve circulates by the action of the spring. When the electric signal enters the auxiliary valve coil, the movable iron core is sucked down by the electromagnetic action, and the auxiliary valve port is closed. The working medium of the medium temperature solenoid valve enters the valve cup through the balance hole. When the pressure tends to be balanced, the main valve spring and the valve cup are used. The weight and medium pressure cause the valve cup to move downward, sealing the main valve port tightly, and the valve is in a closed state. When the main valve is de-energized, the electromagnetic force disappears, the auxiliary valve opens, and the pressure in the main valve cup disappears quickly. The medium pressure will support the main valve cup, open the main valve port, the medium flows, and the valve is open. The working principle of flange solenoid valve.