A liquid ring vacuum pump is simple to operate and can be used in a number of applications Liquid-Ring Vacuum Pump across various industries. A liquid band pump works together with a sealant necessary in its operation. This liquid could be water, oil or any other solvent which is certainly 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 power 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 in to the liquid ring decreases and raises as the impeller rotates. This creates increasing cellular volume on the inlet slot side, creating vacuum.
On the discharge port side, the impeller cell volume decreases as the blades move further in to the liquid band. This increases the pressure until discharge occurs through the discharge interface.
A continuing flow of fresh sealing liquid is supplied 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 atmosphere. Instead, the 1st stage discharges through the manifold resulting in the second stage in addition to through a discharge slot situated in the intermediate plate between your first- and second-stage impellers.