A Liquid-Ring Vacuum Pump china liquid ring vacuum pump is easy to operate and is used in a number 
of applications across various industries. A liquid band pump works together with a sealant needed in its procedure. This liquid could be water, essential oil or any other solvent which is rotated by an impeller within the casing of the pump.
As the shaft turns, a liquid band is created by the centrifugal force produced by the rotating impeller. This push holds the liquid ring against the inner wall structure of the pumping chamber. Because the impeller is located eccentric to the pumping chamber, the depth of access of the blades in to the liquid ring decreases and increases as the impeller rotates. This creates increasing cellular volume on the inlet slot side, creating vacuum.
On the discharge slot side, the impeller cell volume decreases as the blades move further into the liquid ring. This escalates the pressure until discharge takes place through the discharge slot.
A continuous flow of refreshing sealing liquid comes to the pump via the sealing-liquid inlet.
In the case of the two-stage liquid band pump, the discharge from the first stage will not discharge to atmosphere. Instead, the initial stage discharges through the manifold leading to the second stage as well as through a discharge port situated in the intermediate plate between the first- and second-stage impellers.