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Variable delivery pump for molten metal

  • US 5,509,791 A
  • Filed: 05/27/1994
  • Issued: 04/23/1996
  • Est. Priority Date: 05/27/1994
  • Status: Expired due to Fees
First Claim
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1. A delivery pump for pumping reactive material from within a bath containing said reactive material, and into which the pump is immersed, said pump having an elongated housing having a motor at the upper end thereof, said housing containing an elongated drive shaft having a pump rotor secured to the lower end thereof, and an upwardly extending delivery passage within the housing substantially concentric with the drive shaft and connecting with a laterally extending delivery means, and flow modulator means comprising an annular ring having a plurality of outwardly directed passages for passage of said liquid material therethrough in flow moderating relation therewith, said rotor serving to partly block said passages in at least one axially located position thereof, wherein said axial location of said rotor relative to said flow modulator means may be selectively controlled.

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