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Impeller for molten metal pump with reduced clogging

  • US 6,881,030 B2
  • Filed: 02/24/2003
  • Issued: 04/19/2005
  • Est. Priority Date: 01/31/2001
  • Status: Expired due to Fees
First Claim
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1. An impeller made of non-metallic, heat resistant material, comprising;

  • a generally cylindrical shaped body having a central rotational axis;

    first and second end faces extending transverse to the central axis;

    a side wall extending between the first and second end faces;

    a plurality of first inlet openings spaced apart from each other on said first end face;

    a plurality of second inlet openings spaced apart from each other on said second end face;

    connecting passages extending in the body of said impeller; and

    outlet openings located at said side wall;

    wherein said outlet openings are connected to said first inlet openings and said second inlet openings by said connecting passages, and wherein said first inlet openings and said second inlet openings are in alignment such that a rod extending generally parallel to the central axis can simultaneously extend through said first inlet openings and said second inlet openings.

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