A liquid band vacuum pump is easy to operate and is used in several applications across various industries. A liquid band pump works with a sealant needed in its operation. This liquid could be water, essential oil or any various other solvent which is usually rotated by an impeller within the casing of the pump.

As the shaft turns, a liquid band is established by the centrifugal force produced by the rotating impeller. This drive holds the liquid ring against the inner wall of the pumping chamber. Because the impeller is situated eccentric to the pumping chamber, the depth of access of the blades into the liquid ring decreases and boosts as the impeller rotates. This creates increasing cellular volume on the inlet interface side, creating vacuum.

On the discharge interface side, the impeller cell volume decreases as the blades move further into the liquid band. This increases the pressure until discharge occurs through the discharge slot.

A continuing flow of refreshing sealing liquid is Liquid-Ring Vacuum Pump china supplied to the pump via the sealing-liquid inlet.

In the case of the two-stage liquid ring pump, the discharge from the first stage does not discharge to atmosphere. Instead, the 1st stage discharges through the manifold resulting in the second stage along with through a discharge slot positioned in the intermediate plate between the first- and second-stage impellers.