A liquid ring vacuum pump is easy to operate and can be used in a number of applications across various industries. A liquid band pump works with a sealant required in its procedure. This liquid could be water, oil or any various other solvent which is rotated by an impeller within the casing of the pump.
As the shaft turns, a liquid band is established by the centrifugal force generated by the rotating impeller. This push holds the liquid band against the inner wall of the pumping chamber. Because the impeller is located eccentric to the pumping chamber, the depth of entry of the blades into the liquid ring reduces and increases as the impeller rotates. This creates increasing cell 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 band. This increases the pressure until discharge takes place 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 initial stage will not discharge to atmosphere. Instead, the 1st stage discharges through the manifold leading to the second stage as well as through a discharge slot located in the Liquid-Ring Vacuum Pump china intermediate plate between your first- and second-stage impellers.