Magnetic drive pump having encased magnets for pumping very low

Details Magnetic drive pump having encased magnets for pumping very low Magnetic drive pump having encased magnets for pumping very low

1998-07-06

2000-05-02

Bennett, Henry

Pumps

Motor driven

Electric or magnetic motor

41742312, F04B 1700

Patent

active

060565209

ABSTRACT:
A seal-less, magnetic drive pump for pumping fluids at very low temperatures such as liquid nitrogen and liquefied natural gas (LNG). The pump includes a housing having an intake and exhaust with a back plate mounted therein in which a shaft is journaled. An impeller is mounted on the first end and a first magnet is mounted on the second end of the shaft. A second magnet is positioned so as to rotate around the first magnet to rotate the impeller. The first magnet is encased in a material having a coefficient of thermal expansion greater than that of the magnetic material.

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