Screw air compressor inlet valve loading principle

intake valve loading principle steps:

1. Start, the motor is turned on, the main engine starts to run, the small hole of the intake valve inhale, the check valve is opened, the compressed oil and gas enter the oil and gas tank, and the lubricating oil in the oil and gas tank is sprayed into the main engine head (through the temperature control valve). The pressure rises, part of the pressure is released to the upper part of the intake valve through the vent valve, and the remaining pressure is maintained.

2. Loading, motor star-delta conversion, solenoid valve opening, the pressure in the oil and gas tank reaches the pressure reducing valve through the line, pushing the control cylinder to open the butterfly valve, and the intake valve is fully opened for suction; the vent valve is closed at the same time through the pressure of the solenoid valve, The machine is no longer emptied, and the pressure in the tank continues to rise to the outside air supply.

3. Unload. When the pressure rises to the upper limit of the differential pressure gauge, the differential pressure gauge sends an electrical signal to the solenoid valve. The solenoid valve is closed. If the control cylinder is not under pressure, the butterfly valve is closed to maintain the small hole air intake. At the same time, the vent valve is opened to release the pressure in the oil and gas tank to the basic oil pressure.

4. Stop, the motor stops, the main engine stops and no longer inhales, the lower check valve of the intake valve closes quickly, isolating the inside and outside of the machine, and the vent valve continues to vent to the external atmospheric pressure