Motor driven pump for pumping viscous solutions
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United States of America Patent
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-
Sep 25, 1990
Issued Date -
N/A
app pub date -
Jun 17, 1987
filing date -
Sep 26, 1985
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A motor driven pump for pumping a viscous solution of a solute in a solvent comprises an impeller for pumping the solution into an outlet chamber. A shaft is rigidly connected to the impeller and is rotatably mounted in hydrodynamic slide bearings for driving the impeller. A rotor is rigidly mounted on the shaft for rotation therewith in response to actuation of a stator that is operatively associated with the rotor for causing rotation of the shaft. A lubrication system is provided for delivering pressurized solvent to the bearings such that solvent leaking from the bearings flows into the outlet chamber.
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