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A liquid ring vacuum pump is simple to operate and can be used in a number of applications across various industries. A liquid ring pump works with a sealant needed in its procedure. This liquid can be water, oil or any other solvent which is definitely rotated by an impeller within the casing of the pump.

As the shaft turns, a liquid band is created by the centrifugal force generated by the rotating impeller. This pressure 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 entry of the blades in to the liquid ring decreases and raises as the impeller rotates. This creates increasing cellular volume on the inlet port side, creating vacuum.

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

A Liquid-Ring Vacuum Pump continuous flow of refreshing sealing liquid comes to the pump via the sealing-liquid inlet.

Regarding 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 located in the intermediate plate between the first- and second-stage impellers.