Liquid ring vacuum pump

The working principle of Liquid Ring Vacuum Pump is mainly based on its unique structure and motion mode. The following is a detailed explanation of the working principle of the liquid ring vacuum pump:
1. Working principle
Inhalation process:
When the impeller rotates to the first half of the circle, the volume of the sealing chamber between the two blades and the water ring gradually increases, generating negative pressure.
This negative pressure area is connected to the outside through the suction port of the distribution plate, thereby inhaling gas.
Compression and exhaust process:
When the impeller continues to rotate to the second half of the circle, the volume of the sealing chamber gradually decreases and the gas is compressed.
The compressed gas is discharged from the pump through the outlet of the distribution plate, thus completing a working cycle.

2. Basic structure
The liquid ring vacuum pump is mainly composed of pump body, impeller, distribution plate, liquid ring and other components. Among them, the impeller is a rotor with multiple blades, which is eccentrically installed inside the pump casing. When the impeller rotates, it throws liquid (usually water) towards the pump casing and forms a liquid ring concentric with the pump casing. The rotating volume with periodic changes in volume is formed between the liquid ring and the rotor blades, which is the basis for the liquid ring vacuum pump to be able to pump air.

3. Operating characteristics
The function of the liquid ring: The liquid ring forms a dynamic seal between the inner wall of the pump body and the impeller, which not only prevents gas from leaking out of the pump body, but also compresses and discharges gas through its movement.
Continuous water supply: During operation, some water will be discharged from the pump along with the gas, so it is necessary to continuously supply water to the pump to maintain the stable operation of the liquid ring. This is usually achieved through a circulating water system.
Pumping capacity: The pumping capacity of a liquid ring vacuum pump is related to factors such as its rotational speed, thickness of the liquid ring, and the structure of the pump body. By adjusting these parameters, it is possible to extract gases of different pressures and flow rates.

4. Application Fields
Liquid ring vacuum pumps have the advantages of simple structure, reliable operation, and easy maintenance, and are therefore widely used in various situations where gas and water vapor need to be extracted. For example, it can be used in vacuum distillation, vacuum drying, water pump intake, and other fields. In addition, liquid ring vacuum pumps also play an important role in industrial fields such as mine gas extraction, condenser vacuum extraction, and fly ash treatment.

In summary, the working principle of the liquid ring vacuum pump is based on its unique structure and motion mode. By continuously supplying water to the pump and maintaining stable operation of the liquid ring, the liquid ring vacuum pump can continuously remove gas and water vapor, meeting the needs of various industrial applications.