Liquid Band Water Vacuum Pump Vacuum Pump Working Theory. The vacuum pump consisting an impeller which is situated eccentric to the cylinder body(Vacuum pump casing). Vacuum is established in the vacuum pump by using a liquid seal. … When the impeller begins to rotate, the liquid is certainly begins move outward by centrifugal force.
Water ring vacuum pump is a common type of liquid band vacuum pump. Water ring is definitely 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 functioning liquid is drinking water, it is called water Band vacuum pump. There are plenty of kinds of water ring vacuum pumps with different prices. .Included in this, 2BV is more cost-effective. The sort selection of water ring vacuum pump ought to be based on your on-site process, the required 
vacuum degree and the amount of air pumping required.