A liquid band vacuum pump is easy to operate and is used in several applications across various industries. A liquid ring pump works with a sealant required in its procedure. This liquid can be water, essential oil or any additional solvent which is usually Liquid-Ring Vacuum Pump 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 pressure holds the liquid band against the inner wall structure of the pumping chamber. Since the impeller is located eccentric to the pumping chamber, the depth of entry of the blades in to the liquid ring decreases and improves as the impeller rotates. This creates increasing cellular volume on the inlet port 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 ring pump, the discharge from the initial stage will not discharge to atmosphere. Rather, the initial stage discharges through the manifold leading to the second stage along with through a discharge interface positioned in the intermediate plate between your first- and second-stage impellers.