liquid-ring pump

Liquid-ring pumps are typically powered by an induction motor.

How to lower the cost for a vacuum system? Economic analysis of the replacement of ejectors by a liquid-ring pump.

A liquid-ring pump is a rotating positive-displacement pump.

The earliest liquid-ring pumps date from 1903, when a patent was granted in Germany to Siemens-Schuckert.

The liquid-ring pump compresses gas by rotating a vaned impeller located eccentrically within a cylindrical casing.

The function of a liquid-ring pump is similar to a rotary vane pump, with the difference being that the vanes are an integral part of the rotor and churn a rotating ring of liquid to form the compression-chamber seal.