Canned motor pump

Details Canned motor pump Canned motor pump

1993-08-05

1995-03-14

Bertsch, Richard A.

Pumps

Motor driven

Including means utilizing pump fluid for augmenting cooling,...

417DIG1, F04B 3906

Patent

active

053972201

ABSTRACT:
A canned motor pump having an enclosing casing on the inside of a stator and a rotor on the inside of the enclosing casing, in which the interior parts of the enclosing casing communicates with the interior parts of a pump. Surfaces of supported portions on a shaft of the rotor which are contacted with the liquid flowing on the inside of the enclosing casing are treated by electrolytic polishing so that a liquid liable to polymerization or an adherent liquid can normally circulate as a circulating liquid for cooling a motor, and furthermore supporting portions which support the shaft contain bearings produced from fluororesin or glass-fiber reinforced fluororesin.

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patent: 5064298 (1991-11-01), Hibi et al.
patent: 5139393 (1992-08-01), Sulmone
patent: 5150974 (1992-09-01), Tamada et al.
patent: 5246509 (1993-09-01), Kato et al.

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