Low pressure molten metal transfer pump
AssigneePyrotek, Inc.
InventorsJon TIPTON, Andrew HORSFALL, Jason TETKOSKIE
Life of this patent
Estimating the term…
Abstract
A pump for transferring molten metal is provided. The pump includes a motor, a base having an impeller chamber, a shaft connected to the motor at one end, an impeller connected to the other end of the shaft and rotatable in the impeller chamber, and a riser disposed on an upper surface of the base. The base includes a shaft opening and an outlet opening in a top surface. The riser assembly has a first open end facing the base. The first open end is dimensioned to encompass the shaft opening and the outlet opening.
Claims20
A pump for pumping molten metal comprising a motor, a base defining an impeller chamber, a shaft connected to the motor at one end and an impeller at the other end, the impeller being rotatable in the impeller chamber, and a riser disposed on an upper surface of the base, said base including a shaft opening and an outlet opening in the upper surface, said riser having a first open end facing the base, said first open end being dimensioned to encompass the shaft opening and the outlet opening.
(canceled)
A molten metal pump comprising a body defining an elongated chamber, said elongated chamber configured to receive a shaft and impeller assembly, said body comprised of a refractory, ceramic or graphite material, said elongated chamber including an open top through which said shaft passes and a bottom opening interfacing with a base defining a pumping chamber, the impeller disposed in said pumping chamber, said pumping chamber including a bearing interfacing with the impeller, said base including an passage in an upper surface, said passage being in fluid communication with the elongated chamber and the pumping chamber, said base having a circumference and said body having a circumference, wherein the base circumference is only slightly larger, or the same or smaller than the circumference of the body.
(canceled)
(canceled)
A molten metal pump comprising a body defining an elongated chamber, said elongated chamber configured to receive a shaft and impeller assembly, said body comprised of a refractory, ceramic or graphite material, said elongated chamber including a top end through which said shaft passes and a bottom end defining an opening interfacing with a pumping chamber, the impeller disposed in said pumping chamber, said elongated chamber including an outlet adjacent the top end, a passage disposed between the pumping chamber and the outlet and providing fluid communication between the pumping chamber and the outlet, said pumping chamber having a circumference, said elongated chamber having a perimeter adjacent the outlet, wherein a perimeter of the passage is smaller than the perimeter of the elongated chamber and the perimeter of the pumping chamber.
Dependencies are inferred from the claim text.