Water Vacuum Pump Liquid Band Vacuum Pump Working Principle. The vacuum pump consisting an impeller which is situated eccentric to the cylinder body(Vacuum pump housing). Vacuum is established in the vacuum pump by using a liquid seal. … When the impeller starts to rotate, the liquid can be starts move outward by centrifugal push.

Water ring vacuum pump is a common type of liquid band vacuum pump. Water band is a rotor with multi-blades eccentrically set up in the pump shell. When it rotates, it throws liquid into the pump and forms a liquid band concentric with the pump shell. The liquid band and the rotor blade type a rotating variable capacity vacuum pump with periodic volume change. When the working liquid is 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 ring vacuum pump should be predicated on your on-site procedure, the required vacuum degree and the quantity of air pumping required.