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Transfer pump launder system

  • US 10,322,451 B2
  • Filed: 02/22/2018
  • Issued: 06/18/2019
  • Est. Priority Date: 03/15/2013
  • Status: Active Grant
First Claim
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1. A pump configured to be positioned in a vessel that contains molten metal, the pump comprising:

  • (a) a pump base having a pump chamber, a top surface, and a tangential discharge leading to an outlet;

    (b) a riser tube having a passage therethrough, a proximal end having an opening in communication with the passage, the proximal end physically attached to the outlet, a distal end opposite the proximal end, wherein the distal end has an opening in communication with the passage, the distal end being open;

    (c) a superstructure above the pump outlet, the riser tube being supported by the superstructure;

    (d) a launder configured to extend from the vessel to a second vessel, the launder having an open top, and a bottom surface, wherein the distal end of the riser tube is physically connected to the bottom surface of the launder, and the opening in the distal end terminates at or above the bottom surface of the launder and below the open top of the launder, and wherein molten metal can be pumped upward through the riser tube and into the launder;

    (e) an opening in the bottom surface of the launder, wherein the distal end of the riser tube is received in the opening in the bottom surface of the riser tube; and

    (f) the distal end of the riser tube has a raised back portion and a front portion being lower than the back portion, wherein molten metal reaching the distal end of the riser tube exits the front portion and enters the launder.

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