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

As the shaft turns, a liquid ring is established by the centrifugal force generated by the rotating impeller. This power holds the liquid band against the inner wall structure of the pumping chamber. Since the impeller is situated eccentric to the pumping chamber, the depth of entry of the blades in to the liquid ring decreases and increases as the impeller rotates. This creates increasing cell volume on the inlet interface 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 continuous flow of new sealing liquid comes to the pump via the sealing-liquid inlet.

In the case of the two-stage liquid ring pump, the discharge from the 1st stage does not discharge to Liquid-Ring Vacuum Pump atmosphere. Instead, the initial stage discharges through the manifold resulting in the second stage in addition to through a discharge interface positioned in the intermediate plate between your first- and second-stage impellers.