There is a closed cavity in the solenoid valve with through holes at different positions. Each hole leads to the tubing of a different solenoid valve. In the middle of the cavity is the valve and two electromagnets on both sides. Which side of the magnet coil will energize the valve body Which side is attracted to, by controlling the movement of the valve body to block or leak different oil discharge holes, and the oil inlet hole is normally open, the hydraulic oil will enter the different oil discharge pipes, and then the oil cylinder will be pushed by the oil pressure The piston drives the piston rod, and the piston rod drives the mechanical device to move. In this way, the mechanical movement is controlled by controlling the current on and off of the electromagnet.
The above is the introduction of the solenoid valve of the hydraulic baler, I hope it will help you.