are constantly becoming more important in modern plant production processes. Their design and principle of operation offers many advantages over other types of rotary gas pumps. Liquid Ring Vacuum Pumps can be used on a very large scale for widely divergent applications.


Operating Principle

The diagram above shows a cross section of the Liquid Ring Vacuum Pump. It operates on the rotary liquid piston principle, the shaft and the impellers being the only moving parts.

The shaft and impeller assembly is mounted eccentrically relative to the pump casing. As the impeller rotates the service liquid ( which is continually supplied to the pump ), is forced outwards by centrifugal force to form a liquid ring revolving concentric to the pump casing.

Because of the eccentric position of the impeller, the liquid ring will move towards and away from the shaft, resulting in a liquid piston action which displaces the air or gases between the spaces of the impeller blades.


Agencies Available - CLICK HERE As the impeller rotates, the liquid is thrown out by centrifugal force and air is drawn in through the suction port. After the suction port is passed, the service liquid is forced back into the spaces between the impeller blades, gradually compressing the air or gases. When the spaces between the impeller blades reach the discharge point, the liquid ring will force the air compressed between the blades into the discharge port.


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Operating principals of liquid ring vacuum pumps
Design features
Maximum vacuum
Influence of service liquid temp on pumping speed
Capacity tables GDM series
Capacity tables GDH series
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