Liquid Band Vacuum Pump Working Principle. The vacuum pump consisting an impeller which is situated eccentric to the cylinder body(Vacuum pump casing). Vacuum is created in the vacuum pump by utilizing a liquid seal. … When the impeller starts to rotate, the liquid is definitely begins move outward by centrifugal drive.

Water band vacuum pump is a common type of liquid band vacuum pump. Water ring can be 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 ring and the rotor blade form a rotating Water Vacuum Pump variable capacity vacuum pump with periodic quantity change. When the functioning liquid is drinking water, it is called drinking water Band vacuum pump. There are several kinds of water ring vacuum pumps with different prices. .Among them, 2BV is more cost-effective. The type selection of water band vacuum pump should be predicated on your on-site procedure, the required vacuum level and the quantity of air pumping required.