Vacuum Pump
The vacuum pumps and compressors are rotary positive displacement pumps that cover a wide range of applications. The applications are in chemical, petrochemical, pharmaceutical, paint industries as well as general industries.
The working chamber of the vacuum pumps is partially filled with operating liquid during operation. The housing and control disks form the working chamber, in which the eccentrically arranged impeller builds up a circulating liquid ring as it rotates. The liquid ring separates segments in the impeller blades, which enlarge on the suction side during rotation and thus draw in the gas to be pumped through the suction slot. As rotation continues, the segments are reduced in size again, the gas is compressed and pushed out through the discharge side slots of the pump. Part of the operating liquid is conveyed to the discharge side, which is separated from the gas again in the liquid separator.
Thanks to a flexible pressure slot in the control disk, the vacuum pump operates with maximum efficiency over the entire suction range. The resulting pressure slot opening adapts to the prevailing pressure ratio so that overcompression of the pumped gas is avoided.
These vacuum pumps are primarily used to extract moist gases and vapors that are to be condensed during the compression process. As compression is almost isothermal, these machines are particularly suitable for pumping explosive gases or vapours or those that tend to polymerize.
