Mixed flow rotor for molten metal pumping device
OwnerPaul V. Cooperinventor
Life of this patent
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Abstract
A molten metal pumping device is disclosed that comprises a pump base including at least one input port, a pump chamber, a chamber wall, and a discharge leading to an output port. A rotor is retained within the chamber and is connected to a rotor shaft. The device further includes a superstructure attached to and positioned above the pump housing, a motor on the superstructure, a drive shaft connected to the motor and a coupling connecting the drive shaft to the rotor shaft. The rotor is a dual-flow (or mixed-flow) rotor, directing molten metal both into the chamber and towards the chamber wall, where it ultimately exits the chamber through the discharge. The dual-flow rotor can also be used with a scrap melter.
Claims32
A device for pumping molten metal, the device comprising:
- (a) a superstructure;
- (b) a motor positioned on the superstructure;
- (c) a drive shaft having a first end and a second end, the first end being connected to the motor;
- (d) a pump base having an input port, a pump chamber, a chamber wall and a discharge leading to an output port;
- and
- (e) a rotor connected to the second end of the drive shaft, the rotor positioned in said pump chamber and having a vane including:
- (i) a first surface for moving molten metal into the pump chamber, the first surface being angled;
- (ii) a second surface for moving molten metal towards the chamber wall, the second surface being positioned farther from the inlet than the first surface.
A device for pumping molten metal, the device comprising:
- (a) a superstructure;
- (b) a motor positioned on the superstructure;
- (c) a drive shaft having a first end and a second end, the first end being connected to the motor;
- (d) a pump base having an input port, a pump chamber, a chamber wall and a discharge leading to an output port;
- and
- (e) a rotor connected to the second end of the drive shaft, the rotor positioned in said pump chamber and having a vane including:
- (i) a first surface for moving molten metal into the pump chamber, the first surface being angled;
- and
- (ii) a second surface for moving molten metal towards the chamber wall, the second surface being positioned farther from the inlet than the first surface,
- wherein the rotor includes a horizontally-extending projection, the projection including a leading edge, a top surface and a bottom surface, the first surface being formed on the bottom surface of the projection.
A device for pumping molten metal, the device comprising:
- (a) a superstructure;
- (b) a motor positioned on the superstructure;
- (c) a drive shaft having a first end and a second end, the first end being connected to the motor;
- (d) a pump base having an input port, a pump chamber, a chamber wall and a discharge leading to an output port;
- and
- (e) a rotor connected to the second end of the drive shaft, the rotor positioned in said pump chamber and having a vane including:
- (i) a first surface for moving molten metal into the pump chamber, the first surface being angled;
- and
- (ii) a second surface for moving molten metal towards the chamber wall, the second surface being positioned farther from the inlet than the first surface,
- wherein the rotor includes three vanes.
A dual-flow rotor for directing molten metal into and out of a pump chamber, the rotor including a rotor vane comprising:
- (a) a first means for moving molten metal into the pump chamber;
- and
- (b) a second means for moving molten metal towards the chamber wall.
A dual flow rotor for use in a molten metal pump having a pump chamber and a chamber wall, the rotor comprising:
- (a) a first means for moving molten metal into the pump chamber;
- (b) a second means for moving molten metal into the pump chamber;
- and
- (c) a third means for moving molten metal towards the chamber wall, the third means positioned between the first means and the second means.
A dual flow rotor for use in a molten metal pump having a pump chamber and a chamber wall, the rotor comprising:
- at least three vanes, each vane including first means for forcing molten metal into the pump chamber and second means for forcing molten metal towards the chamber wall.
A scrap melter to be used in a vessel having a vessel wall and containing a molten metal bath, the scrap melter comprising:
- a motor;
- a shaft having a first end connected to the motor and a second end;
- and
- a rotor attached to the second end of said shaft, the rotor comprising at least three vanes, wherein each vane comprises first means for pushing molten metal into the molten metal bath, and second means for pushing molten metal toward the vessel wall.
Dependencies are inferred from the claim text.