Title:
LIQUID SEALED VACUUM PUMP
Document Type and Number:
Japanese Patent JPS585495
Kind Code:
A
Abstract:
For improved operation of a liquid ring vacuum pump at lower suction pressures and avoiding erosion damage while eliminating pressure booster pumps or scooping tubes in circular operation as well as for simplified external control of the working liquid, an inflow channel is milled into the control disc behind the suction slot on the side facing the impeller, which channel is in communication with a pressurized liquid passage for gap sealing pressurized liquid. The pressurized liquid feed line is connected to a separator or to the machine sump. For improving the efficiency or the liquid output at higher suction pressures, a relief passage is also provided in the control disc above the pressure slot.
Inventors:
BUIRUFURIITO RIYUPUKE
Application Number:
JP10664082A
Publication Date:
January 12, 1983
Filing Date:
June 21, 1982
Export Citation:
Assignee:
SIEMENS AG
International Classes:
F04C19/00; (IPC1-7): F04C19/00; F04C25/02
Attorney, Agent or Firm:
Iwao Yamaguchi
Next Patent: IMPROVEMENT OF CANNED MOTOR PUMP