Importance

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Abstract

The invention relates to a rotary device for treating molten metal and a rotor for use with the rotary device. The rotary device comprises a hollow shaft and a rotor at one end of the hollow shaft, the rotor comprising: a roof and a base, the roof and base being spaced apart and connected by a plurality of dividers; a central chamber defined between the roof and the base, the dividers extending radially from the periphery of the central chamber; a passage being defined between each adjacent pair of dividers, each passage having an inlet located radially outward of the central chamber and an outlet in an outer peripheral surface of the rotor; and a flow path being defined through the hollow shaft into the central chamber, through the inlets of the passages and out of the outlets. The base comprises either: a plurality of apertures fluidly connected to the central chamber and a radial blade defined between each adjacent pair of apertures; a central aperture and a plurality of radial vanes protruding outwardly from the base, the radial vanes being arranged around the periphery of the central aperture, wherein the radial vanes extend towards the centre of the base and at least partially over the central aperture; or a central aperture and a plurality of radial vanes protruding outwardly from the base, the radial vanes being arranged around the periphery of the central aperture, wherein the base further comprises a plurality of cut-outs arranged between the radial vanes, the cut-outs in the base extending inwardly from the outer periphery of the rotor.

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First Claim