Closed loop system of liquid ring vacuum pump

It is different from single-stage and double-stage vacuum pumps. It is a single-stage vacuum pump and a double-stage vacuum pump. 

1. Separator pressure gauge: if pressure may be generated in the separator, a pressure gauge shall be installed on the separator;

2. Suction port vacuum check valve: in order to prevent backflow when the vacuum pump / compressor is shut down, it is generally necessary to install a vacuum check valve or pneumatic valve at the inlet of the pump;

3. Working fluid booster pump: if the working fluid supply of the pump is insufficient or the working pipeline resistance is large, the working fluid booster pump can be installed;

4. Air port filter: if foreign matters may enter the pump in the system and pipeline, a filter or filter screen shall be installed at the suction port of the pump;

5. Cavitation protection pipeline: if the suction pressure of the vacuum pump is close to the saturated vapor pressure of the working fluid, a cavitation protection pipeline should be installed between the vacuum pump and the separator;

6. Exhaust condenser: if it is necessary to capture or recover the condensable gas at the exhaust port, a condenser can be installed at the exhaust port of the gas-liquid separator;

7. Liquid replenishing port of separator: if the working fluid is insufficient, the working fluid can be replenished properly from the liquid replenishing port;

8. If the vacuum pump has other special requirements, the corresponding accessories can be installed.


Rotary Vane Vacuum Pump Working Principle

Rotary Vane Vacuum Pump

Dry Scroll Vacuum Pump