Structural principle of three position four way solenoid valve

The main structure of a three position four way solenoid valve consists of an inlet and outlet, a middle partition, and a control room. There is a channel between the inlet and outlet and the middle partition, whose shape is the same as the control hole of the valve core. In the control room, a permanent magnet is fixed around the coil to ensure sealing between the control room and the main circuit. The coil controls the position of the valve core by adding/removing power, thereby controlling the fluid path. The coil consists of three parts: winding, iron core, and base. The winding is made by winding insulated copper wire, which generates electromagnetic force inside the iron core through the current in the circuit, controlling the position of the valve core. The valve core determines the flow path of the fluid. The shape of the valve core is generally cylindrical or small conical, with control holes on it. When the coil is energized, the magnetic field on the iron core will attract the valve core, causing it to move towards the path, thereby changing the fluid path.