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.
Claims16
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.
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 a 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, and wherein a circumference of a top opening of the passage is less than 20% of the circumference of the pumping chamber.
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.