Liquid-Ring Vacuum Pump

A liquid band vacuum pump is easy to operate and is used in several applications across various Liquid-Ring Vacuum Pump china industries. A liquid ring pump works together with a sealant required in its operation. This liquid can be water, oil or any various other solvent which can be rotated by an impeller within the casing of the pump.

As the shaft turns, a liquid ring is created by the centrifugal force generated by the rotating impeller. This push 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 into the liquid ring decreases and raises as the impeller rotates. This creates increasing cellular quantity on the inlet port side, creating vacuum.

On the discharge slot side, the impeller cell volume decreases as the blades move further in to the liquid band. This increases the pressure until discharge takes place through the discharge port.

A 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. Rather, the first stage discharges through the manifold leading to the second stage and also through a discharge slot located in the intermediate plate between the first- and second-stage impellers.


PTO Drive Shaft

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