A pump for transferring fragile and aggressive fluids such as human blood and comprising a pumping chamber along with a pair of fluid inlet ports arranged in oppositely disposed relationship on the chamber,Chemical pumps and one or more outlet ports arranged transversely and medially of the inlet ports. A rotor is positioned within the pumping chamber having a dual-conical configuration converging toward opposed polar end regions and with an axis of rotation extending between the polar regions. The rotor includes a plurality of radial vanes mounted on the outer surface of the dual cones forming the dual-conical configuration, and with the radially outward tips of the vanes encapsulating permanent magnets,Self-priming pumpswith the vanes and permanent magnets being arranged at equally radially spaced locations. A magnetic drive is positioned to deliver rotational driving energy to the magnets in the rotor. The sole support for the rotor are the hydrodynamic forces acting upon the rotor during its operation, with the rotor body having a relative density of between 10% and 90% of the relative density of the fluid being pumped.

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2011-12-20

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