Pumps – Motor driven – Electric or magnetic motor
Patent
1998-09-11
2000-09-26
Walberg, Teresa
Pumps
Motor driven
Electric or magnetic motor
4174233, F04B 1700, F04B 3504
Patent
active
061235237
ABSTRACT:
A device for dispersing gas into molten metal, the device comprising: (1) a pump having: (a) a pump base including a pump chamber and a discharge, (b) a motor, (c) a motor shaft connected to the motor, (d) a rotor shaft connected to the motor shaft by a coupling and (e) a rotor fastened to the end of the rotor shaft opposite the motor shaft, the rotor shaft positioned in the pump chamber. The motor shaft and rotor shaft each have gas-transfer passages and the rotor preferably includes openings to transfer gas from the rotor-shaft passage into the pump chamber. The pump generates a stream of molten metal traveling through the discharge. Gas is introduced into the motor shaft passage and passes into the rotor shaft passage where it is transferred to the rotor and ultimately escapes through the openings in the rotor and into the pump chamber. As the rotor turns it mixes the gas and the molten metal and this mixture travels through the entire length of the pump discharge. Optionally, a metal-transfer conduit may extend from the discharge.
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Fastovsky Leonid
Lechter Michael A.
Rogers David E.
Walberg Teresa
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