Liquid Ring Vacuum Pump Working Principle. The vacuum pump consisting an impeller which is Water Vacuum Pump situated eccentric to the cylinder body(Vacuum pump casing). Vacuum is established in the vacuum pump by using a liquid seal. … When the impeller starts to rotate, the liquid is starts move outward by centrifugal force.
Water ring vacuum pump is a common type of liquid ring vacuum pump. Water ring is usually a rotor with multi-blades eccentrically set up in the pump shell. When it rotates, it throws liquid in to the pump and forms a liquid ring concentric with the pump shell. The liquid ring and the rotor blade type a rotating variable capacity vacuum pump with periodic quantity change. When the working liquid is drinking water, it is called water Band vacuum pump. There 
are many kinds of water ring vacuum pumps with different prices. .Among them, 2BV is more cost-effective. The type selection of water ring vacuum pump ought to be based on your on-site process, the required vacuum level and the quantity of air pumping required.