Liquid Band Vacuum Pump Working Theory. The vacuum pump consisting an impeller which is located eccentric to the cylinder body(Vacuum pump casing). Vacuum is created in the vacuum pump by utilizing a liquid seal. … When the impeller begins to rotate, the liquid is definitely begins move outward by centrifugal force.
Water ring vacuum pump is a common type of liquid ring 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 ring concentric with the pump shell. The liquid band and the rotor blade type a rotating variable capacity vacuum pump with periodic quantity change. When the operating liquid is drinking water, it is called water Band vacuum pump. There are several kinds of water band vacuum pumps with different prices. .Among them, 2BV is more cost-effective. The sort selection of water band vacuum pump ought to be predicated on your on-site process, the Water Vacuum Pump required vacuum degree and the amount of air pumping required.