Water Ring Vacuum Pump (WRN) by Vijay Pumps Private Limited

The main casing and side covers are made out of special grade close cast iron. The dynamically balanced impeller with curved blades and hollow hub rotates in a circular casing containing the liquid. The axis of rotor is placed eccentric with the axis of casing. At the operating speed, the liquid rotates with the rotor and due to the centrifugal force, always remains in contact with the casing, forming a circular hollow ring whose internal surface is at varying distance of axis of rotor. As the rotor moves the liquid ring moves away from the centre and air is drawn into the chamber formed by these two adjacent blades and the moving liquid ring now acts as a piston on its suction stroke. This continues till the rotor chamber moves to 180 deg. During their travel all the chambers formed by the blades are connected to the blades are connected to the inlet branch of the pump through specially designed covers. As the rotor chamber moves to its original position, the chamber formed by any two adjacent blades decreases in volume, as the liquid ring is moving towards the centre and acting as piston on its compression stroke. At the end of this part of their travel the chambers are connected to the outlet branch of the pump through the specially designed parts in the end of cover and air is discharged into this branch. Due to vanes and the continuous operation is non-pulsating. Almost all the heat generated due to compression is absorbed by the ring water, therefore the water needs to be supplied continuously.

Applications:-

Many applications including: Autoclaves, Carburetor Testing, Chucking, Condenser Exhausting, Container Filling, Cooking, De-aerating, Drying, Eviscerating, Exhausting, Extruder Venting, Fiber Setting, Filtering, Forming, Gas Stripping, Molding, Pickup and Conveying, Priming, Slot Extraction and Solvent Recovery.