Spray assembly for molten metal
First Claim
1. In a pump for pumping molten metal including a motor fastened to a motor support, a base having an impeller chamber, at least one molten metal inlet opening to the base, a molten metal outlet opening from the base, a shaft connected to the motor at one end, and an impeller connected to the other end of the shaft and rotatable in the impeller chamber, the base, the shaft and the impeller being formed of refractory material, the improvement comprising:
- a conduit in communication with molten metal discharged from the base outlet opening, said conduit being formed of refractory material and comprising an arcuate shaped portion having an inner wall and an outer wall, a plurality of molten metal outlet openings being disposed in the inner wall such that molten metal discharged through the openings projects toward an interior region formed by the arcuate portion to coat the perimeter surfaces of an object passed through the interior region; and
an insulating region located between said conduit and said motor support effective to enable said conduit to be free from contact with heat conducting material which would lead to heat transfer and clogging of the openings.
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Accused Products
Abstract
A pump for coating molten metal onto a substrate includes a base with an impeller chamber, at least one molten metal inlet opening to the base, at least one molten metal outlet opening from the base, and an impeller connected to one end of a motor driven shaft and rotatable in the impeller chamber, the base, shaft and impeller being made of refractory material. A conduit is in communication with the molten metal discharged from the molten metal outlet opening. The conduit is formed of refractory material and comprises an arcuate shaped portion in which molten metal outlet openings are disposed. An insulating region is located between the conduit and a motor support. The conduit has a shape and the conduit outlet openings are configured and arranged to discharge molten metal toward an interior of the conduit in upward and downward directions such that exterior surfaces of a workpiece passed therein are coated with molten metal. Also included are a spray assembly for a pump for pumping molten metal and a method of coating workpieces with molten metal.
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Citations
21 Claims
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1. In a pump for pumping molten metal including a motor fastened to a motor support, a base having an impeller chamber, at least one molten metal inlet opening to the base, a molten metal outlet opening from the base, a shaft connected to the motor at one end, and an impeller connected to the other end of the shaft and rotatable in the impeller chamber, the base, the shaft and the impeller being formed of refractory material, the improvement comprising:
- a conduit in communication with molten metal discharged from the base outlet opening, said conduit being formed of refractory material and comprising an arcuate shaped portion having an inner wall and an outer wall, a plurality of molten metal outlet openings being disposed in the inner wall such that molten metal discharged through the openings projects toward an interior region formed by the arcuate portion to coat the perimeter surfaces of an object passed through the interior region; and
an insulating region located between said conduit and said motor support effective to enable said conduit to be free from contact with heat conducting material which would lead to heat transfer and clogging of the openings. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
- a conduit in communication with molten metal discharged from the base outlet opening, said conduit being formed of refractory material and comprising an arcuate shaped portion having an inner wall and an outer wall, a plurality of molten metal outlet openings being disposed in the inner wall such that molten metal discharged through the openings projects toward an interior region formed by the arcuate portion to coat the perimeter surfaces of an object passed through the interior region; and
- 12. A spray assembly for a pump for pumping molten metal, said assembly comprising a conduit that is adapted to be fastened to a base of a pump for pumping molten metal near an outlet opening thereof, said base having an interior in which an impeller is rotatable, said conduit being formed of refractory material and comprising an arcuate shaped portion having an inner wall and an outer wall, a plurality of molten metal outlet openings being disposed in the inner wall such that molten metal discharged through the openings projects toward an interior region formed by the arcuate portion to coat the perimeter surfaces of an object passed through the interior region, and said conduit being constructed of dimensions and of a configuration that enable said conduit to extend beneath a support for a motor of the pump so as to leave an insulating region between said conduit and the motor support effective to enable said conduit to be free from contact with heat conducting material which would lead to heat transfer and clogging of the openings.
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20. A spray assembly for a pump for pumping molten metal, said assembly comprising a conduit that is adapted to be fastened to a base of a pump for pumping molten metal near an outlet opening thereof, said base having an interior in which an impeller is rotatable, said conduit being formed of refractory material and comprising an arcuate shaped portion in which molten metal outlet openings are disposed, and said conduit being constructed of dimensions and of a configuration that enable said conduit to extend beneath a support for a motor of the pump so as to leave an insulating region between said conduit and the motor support effective to enable said conduit to be free from contact with heat conducting material which would lead to heat transfer and clogging of the openings.
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21. In a pump for pumping molten metal including a motor fastened to a motor support, a base having an impeller chamber, at least one molten metal inlet opening to the base, a molten metal outlet opening from the base, a shaft connected to the motor at one end, and an impeller connected to the other end of the shaft and rotatable in the impeller chamber, the base, the shaft and the impeller being formed of refractory material, the improvement comprising:
- a conduit in communication with molten metal discharged from the base outlet opening, said conduit being formed of refractory material and comprising an arcuate shaped portion in which molten metal outlet openings are disposed; and
an insulating region located between said conduit and said motor support effective to enable said conduit to be free from contact with heat conducting material which would lead to heat transfer and clogging of the openings.
- a conduit in communication with molten metal discharged from the base outlet opening, said conduit being formed of refractory material and comprising an arcuate shaped portion in which molten metal outlet openings are disposed; and
Specification