Molten metal pump

Details Molten metal pump Molten metal pump

1991-01-25

1992-02-18

Kwon, John T.

Rotary kinetic fluid motors or pumps

Working fluid passage or distributing means associated with...

Specific casing or vane material

415206, 4152141, 2482317, F04D 1708

Patent

active

050888935

ABSTRACT:
A molten metal pump includes an impeller disposed at the end of an elongate drive shaft. The drive shaft is disposed within an elongate, hollow post. The impeller and the end of the post are adapted to be immersed in molten metal. An inert gas is conveyed through the gap between the outer surface of the drive shaft and the inner surface of the post, which gas is discharged into the molten metal in the vicinity of the impeller. Because the drive shaft is insulated from the molten metal, it can be made of a durable material such as steel; because the post is stationary relative to the molten metal, the metal is stirred only by the impeller, and not by the drive shaft. The invention includes other features such as a quick disconnect capability and a radial adjustment capability.

REFERENCES:
patent: 3255702 (1966-06-01), Gehrm
patent: 3776660 (1973-12-01), Anderson et al.
patent: 4786230 (1988-11-01), Thut
patent: 4940384 (1990-07-01), Amra et al.

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