Pump for pumping molten metal having cleaning and repair feature

Details Pump for pumping molten metal having cleaning and repair feature Pump for pumping molten metal having cleaning and repair feature

1996-12-20

1998-12-01

Freay, Charles G.

Pumps

Processes

417 53, 417360, 415 1, 415200, 4151691, 266235, F04B 3504

Patent

active

058428321

ABSTRACT:
A pump for pumping molten metal includes a motor supported by motor mounting structure above a bath of the molten metal. A shaft has one end connected to the motor. An impeller is connected to the other end of the shaft. The motor mounting structure supports the motor above a bath of molten metal. A device connects the motor to the base member, facilitating replacement of the shaft. The pump may be cleaned by rotating the shaft in a shaft sleeve, the impeller being disposed in an impeller chamber of a base. The rotational velocity of the shaft is adjusted to approximate the velocity at which cavitation occurs in the pump. Metal oxides inside the shaft sleeve are then removed from the pump.

REFERENCES:
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patent: 3620942 (1971-11-01), Day et al.
patent: 3984234 (1976-10-01), Claxton et al.
patent: 4224363 (1980-09-01), Veronesi et al.
patent: 5154584 (1992-10-01), McEwen
patent: 5181828 (1993-01-01), Gilbert et al.
patent: 5330328 (1994-07-01), Cooper
patent: 5441390 (1995-08-01), Rapp et al.
patent: 5676520 (1997-10-01), Thut

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