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Verhinderung von Ölrückströmungen in Wälzkolbenpumpen
Author(s) -
Schopphoff Andreas,
Eisermann Sebastian
Publication year - 2020
Publication title -
vakuum in forschung und praxis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.213
H-Index - 13
eISSN - 1522-2454
pISSN - 0947-076X
DOI - 10.1002/vipr.202000733
Subject(s) - lubrication , grease , petroleum engineering , backflow , residual , mechanical engineering , engineering , environmental science , materials science , computer science , composite material , inlet , algorithm
Summary Prevention of oil backflow in Roots pumps ‐ Residual gas analysis by quadrupole mass spectrometry In industrial vacuum applications too, there is a growing trend towards dry, oil‐free, pump systems. But what does oil‐free mean? All bearings and gearboxes used in roots and screw pumps require lubrication with oil or grease. While constructive measures are implemented to avoid contamination of the process gas by back‐flowing lubricants from the pumps, no tests have yet been carried out on complete pumping stations to confirm their effectiveness. With the help of this report it is possible for the first time to make qualitative statements about the oil‐free nature of dry pumping stations.