Patent ID: 8585962

Claim:
A non-ferrous metal melt pump comprising: a container body which includes an inner space and a non-ferrous metal melt passageway, the non-ferrous metal melt passageway being formed inside a side wall so that a lower end inlet and an upper end open portion, respectively formed in the side wall to be open to the outside, communicate with each other, the non-ferrous metal melt passageway having a spiral passageway and a successive vertical rising passageway, the lower end inlet communicating with one end of the spiral passageway, the other end of the spiral passageway communicating with one end of the vertical rising passageway, and the other end of the vertical rising passageway communicating with the upper end open portion; a magnetic field device for driving non-ferrous metal melt in the spiral passageway, which is rotatable about a vertical axis line, arranged inside the inner space, and the magnetic field device having a magnitude of a magnetic field such that lines of magnetic force move while penetrating non-ferrous metal melt inside the spiral passageway during the rotation so that the melt in the spiral passageway spirally moves up to push up the melt in the vertical rising passageway along the vertical direction towards the upper end open portion; and a drive device which rotationally drives the magnetic field device.