The pumped medium is trapped between the cylinder and screw chambers, compressed, and transported to the gas outlet.
During the compression process the screw rotors do not come in contact with each other or the cylinder.
Thus, no lubricants or operating fluids are required in the compression chamber.
Products using this technology:
COBRA Industry (https://www.buschvac
Today, Busch from Maulburg in the Black Forest in Germany is the world market leader in all areas of industrial vacuum.
Dolphin LMs are single-stage vacuum pumps for rough vacuum applications from atmospheric pressure to 100 Torr ultimate pressure. Dolphin LTs are two-stage vacuum pumps and operate from atmospheric pressure to 25 Torr. The Dolphin LM / LT series is available in a total of 13 sizes, allowing an exact match to every process.The operating fluid is usually water, but other liquids may be used if required by process conditions. Dolphin LM / LT liquid ring vacuum pumps may be operated as a simple continuous flow system, or as a partial or total recirculation system.
The COBRA NC is a series of high-performance and robust dry screw vacuum pumps for demanding applications with maximum flexibility and modularity for process changes. These vacuum generators are in use wherever gases and vapors need to be pumped reliably. The proven, completely dry screw vacuum technology allows the COBRA NC to run without operating fluids in the compression chamber. In practice this means no contamination of the pumped medium, and no environmental emissions. In addition, no costs arise for the purchase, replacement and disposal of operating fluids. Maintenance tasks such as oil changes or filter replacement are no longer required or are reduced to a minimum.
Intelligent, efficient and reliable: The R5 PLUS is the first fully connected vacuum solution from Busch. With advanced control and monitoring functionalities it is ready for Industry 4.0. All relevant parameters can be adjusted and monitored allowing a perfect match to every process.
Find out more about the R5 PLUS series:
RD series vacuum pumps belong to the Busch product family of proven R 5 rotary vane vacuum pumps. They have been specifically designed for use in vacuum packaging machines and fast packaging cycles.Robustness and reliability of operation are the outstanding qualities of R 5 rotary vane vacuum pumps. These are just some of the reasons why proven Busch rotary vane technology has long established itself as the industry standard. Over 2.5 million R 5 rotary vane vacuum pumps are in operation worldwide in industry every day.High efficiency and energy-efficient drive units are the outstanding qualities of this product family. The R 5 RD series even achieves the same performance with 20% less energy consumption.