NONCONTACT PUMP CAUSING NO CONTAMINATION

PROBLEM TO BE SOLVED: To prevent contamination from occurring by bringing rotating portions into a non-contact with a peripheral wall. SOLUTION: The rotor of a vertical pump is formed in a nonmagnetic electrically conductive hollow tube, and a rotating force and an electromagnetic repulsion are gene...

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Bibliographische Detailangaben
Hauptverfasser: YANO YOSHIO, AOTANI ISAMU
Format: Patent
Sprache:eng
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Zusammenfassung:PROBLEM TO BE SOLVED: To prevent contamination from occurring by bringing rotating portions into a non-contact with a peripheral wall. SOLUTION: The rotor of a vertical pump is formed in a nonmagnetic electrically conductive hollow tube, and a rotating force and an electromagnetic repulsion are generated in the rotor having permanent magnets by a rotary field generator to suppress a contact with a liquid film. A balance hole, rear vanes and a curved edge are provided in an impeller, and a balancing device incorporating a magnet device is installed to reduce a thrust. Slurry-free fluid is circulated in a can through a filter on a pump discharge side to prevent a wear. The removal of the rotating parts of the pump is facilitated to simplify cleaning.