Apparatus for preventing solidification of molten metal in an electro-magnetic pump for supplying the molten metal

An apparatus for supplying molten metal which comprises:

• a. a container means for receiving molten metal;
• b. an electromagnetic pump including a molten metal conduit therein, said pump being connected to said container means and generating a traveling magnetic field adapted to discharge the molten metal from the container by using the molten metal as a secondary conduit thereof;
• c. and means for causing perpetual replacement of the molten metal in the pump with that in the container when the traveling magnetic field is directed toward the container and for preventing solidification of said molten metal in said pump, said means for causing perpetual replacement of molten metal in the pump including partition walls disposed within said molten metal conduit and defining passageways for said molten metal, said partition walls comprising two partition walls dividing the molten metal conduit in the pump into three passageways consisting of a central passageway and two adjacent passageways, said molten metal conduit extending upwardly and including an outlet end, said partition walls extending into the container and toward said outlet end, and said partition walls being located such that when the traveling magnetic field is applied toward the container, the partition walls introduce molten metal into the container and are entirely immersed in molten metal, and further including magnetism shielding members surrounding a portion of said electromagnetic pump, said portion having said adjacent passageways located therein.

An apparatus for supplying molten metal which comprises:

• a. a container means for receiving molten metal;
• b. an electromagnetic pump including a molten metal conduit therein, said pump being connected to said container means and generating a traveling magnetic field adapted to discharge the molten metal from the container by using the molten metal as a secondary conduit thereof;
• c. and means for causing perpetual replacement of the molten metal in the pump with that in the container when the traveling magnetic field is directed toward the container and for preventing solidification of said molten metal in said pump, said means for causing perpetual replacement of molten metal in the pump including partition walls disposed within said molten metal conduit and defining passageways for said molten metal, said partition walls comprising two partitions walls dividing the molten metal conduit in the pump into three passageways consisting of a central passageway and two adjacent passageways, said molten metal conduit extending upwardly and including an outlet end, said partition walls extending into the container and toward said outlet end, and said partition walls being located such that when the traveling magnetic field is applied toward the container, the partition walls introduce molten metal into the container and are entirely immersed in molten metal, said molten metal conduit including an enlarged portion adjacent to said parition walls whereby the strength of traveling magnetic field in the adjacent passageways is decreased in combination with that in the central passageway.