Liquid Band Vacuum Pump Working Principle. The vacuum pump consisting an impeller which is located eccentric to the cylinder body(Vacuum pump casing). Vacuum is established in the vacuum pump by utilizing a liquid seal. … When the impeller starts to rotate, the liquid is begins move outward by centrifugal drive.
Water ring vacuum pump is a common kind of liquid band vacuum pump. Water band can be a rotor with multi-blades eccentrically installed in the pump shell. When it rotates, it throws liquid into 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 volume change. When the working liquid is drinking water, it is called water Ring vacuum pump. There are numerous kinds of water ring vacuum pumps with different prices. .Included in this, 2BV is more cost-effective. The type selection of water band vacuum pump should be predicated on your Water Vacuum Pump on-site procedure, the required vacuum degree and the amount of air pumping required.