dry screw vacuum pump operation steps

Dry screw vacuum pump is a kind of suction and exhaust equipment which uses a pair of screw to make synchronous high-speed reverse rotation in the pump shell. It is a renewal product of oil-sealed vacuum pump. It can extract gas containing a large amount of water vapor and a small amount of dust. In domestic pharmaceutical, chemical and semiconductor industries, it is really clean. Enterprises with high empty requirements have been widely used. Then its use procedure is also very strict. Now let's study with Xiaobian.

1. Inspection: Inspection of horizontal and vertical installation of dry screw vacuum pump. Tighten the grounding screw. The motor cable is connected correctly. Whether the motor steering is normal or not, if it is reverse operation, it should be corrected immediately. The intake and exhaust pipes are sealed. The cooling water pipe is connected and leaks. The muffler has been installed. The intake valve has been installed. Prepare and observe whether the direction of the pump is the same as the direction marked on the pump. If not, please correct it immediately. Each time the screw vacuum pump is started, the air pump must be operated for 20-30 minutes, then the liquid of the pump and muffler is discharged until the exhaust port. No liquid discharge, prepare for normal pump operation. Open the cooling water valve.

2. Start-up and operation of screw vacuum pump: open the entrance valve and close the entrance. All completed, no abnormalities, and start the pump. The normal operation of data, pump protection is very important. Because of the special structure of dry pump, its operation and mechanical pump are different from Roots pump at present. In the case of extreme voltage, the current will be relatively large, in general, the power of the motor is twice that of the motor. In the same atmospheric conditions will be very small, but also under normal circumstances, to reach the normal motor left and right amplifier.

3. Stop: Close the intake valve and open the intake valve. Open the exhaust valve, cut off the pump motor power supply, stop. Turn off the cooling water source. Close the intake valve. Close the exhaust valve. Discharge the cooling water in the pump to avoid freezing of the pump body in winter or below 4 C, which causes the pump not to run. Observe the discharge temperature of cooling water.

ZJZSK Roots Liquid Ring Vacuum Pump System

Air ejector liquid ring vacuum pump system

water vapor cryopump