Liquid Ring Vacuum Pump Working Principle. The vacuum pump consisting an 
impeller which is situated eccentric to the cylinder body(Vacuum pump housing). Vacuum is created in the vacuum pump by using a liquid seal. … When the impeller starts to rotate, the liquid is certainly starts move outward by centrifugal force.
Water band vacuum pump is a common type of liquid band vacuum pump. Water band is certainly a rotor with multi-blades eccentrically installed in the pump shell. When it rotates, it throws liquid in to the pump and forms a liquid band concentric with the pump shell. The liquid band and the rotor blade form a rotating variable capacity vacuum pump with periodic quantity change. When the operating liquid is drinking water, it is called drinking water Ring vacuum pump. There are plenty of kinds of water band vacuum pumps with Water Vacuum Pump different prices. .Among them, 2BV is more cost-effective. The sort selection of water band vacuum pump should be based on your on-site procedure, the required vacuum degree and the quantity of air pumping required.