A combination of electromagnetic induction pressure regulating valve and a pneumatic filter valve. The solenoid induction pressure regulating valve is used to control the opening and closing of pneumatic filter valve to complete the waste water treatment and pressure changing work of refrigeration compressor.

Car solenoid valve to connect power, magnetic field force to push the control valve heart pressure to adjust the seat, to complete the seal between the two, with narrow a small round hole on the pneumatic valve core according to the pneumatic valve core of a small round hole into the operating valve core pressure to adjust the seat, to produce high pressure, promote heart pressure to the pneumatic pneumatic valve seat, complete pneumatic valve shut off.

Solenoid valve through electromagnet jump stop, the magnetic field force is weakened, the top of the pneumatic spool high-pressure vapor pull out of the valve core of the manipulator and released, at this time the efficacy of the pneumatic spool at the bottom of the high-pressure vapor pull out, push the pneumatic valve from the pneumatic valve seat, solenoid valve open, complete sewage treatment.

According to the time controller to control the solenoid valve power connection and jump stop interval time and delay time, complete the solenoid valve automatic closing and opening.

Secondary control cartridge solenoid valve, the leading stage is two high temperature solenoid valve, equivalent to the speed regulating valve; The main valve core is a three-way cartridge valve.

Main bay is determined by the main solenoid valve solenoid valve, electromagnetic valve when the main switching power supply, the work of electromagnetic valve position on the left, the main role of solenoid valve is according to the damping hole function on the main electromagnetic valve R1, at this time due to the magnet coil magnetic field force, make the main electromagnetic valve of the main steam pressure cut-off, along with gear oil quantity rise, master the role of the solenoid valve is more and more big, The role of the main solenoid valve is increasing, the role of the main solenoid valve is to get rid of the main valve center of the elastic force, to promote the movement of the main solenoid valve, the role of the main solenoid valve is to control the steam pressure C, the role of the hydraulic press is the executive component position. The main steam pressure A increases or decreases, and the main valve core again reaches equilibrium point under the action of the magnetic field, similar to the principle of the main stage regulating valve. When the solenoid valve is working on the right side, the magnetic field force is weakened. The main valve core is calibrated under the action of elastic yellow force. The oil hole B is connected with the oil hole C, and the steam pressure is controlled to flow to the automobile oil tank according to the small round hole, and the main steam pressure flows to the automobile oil tank by the vibration reduction holes R1 and R2.