Liquid Ring Vacuum Pumps and Compressors

The operating principle of Elmo Rietschle’s L-Series liquid ring pumps is both simple and innovative.An eccentrically mounted impeller rotates within the pump casing, forming a liquid ring that seals the impeller blades. As gas enters through the suction port, it is trapped in blade cells and compressed as the impeller rotates. This compression creates a pressure difference, enabling the pump to function as both a vacuum pump and a compressor.
Liquid is continuously drawn into the compression chamber to stabilize the liquid ring. It is then expelled with the conveyed gas, ensuring smooth operation. For enhanced efficiency, the expelled liquid can be recirculated using standardized circuit units, reducing water usage and operational costs.The ability to condense vapor within the conveyed gas adds versatility, allowing liquid ring pumps to replace gas washers, filters, coolers, and exchangers in certain applications. This innovative design ensures stable, efficient operation with minimal liquid supply, making the L-Series a standout choice for wet and challenging environments.