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Apparatus for maintaining solids in a suspension and a method of using it

  • US 4,249,828 A
  • Filed: 09/07/1978
  • Issued: 02/10/1981
  • Est. Priority Date: 09/13/1977
  • Status: Expired due to Term
First Claim
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1. Apparatus for maintaining solids in suspension in a vat, said apparatus including a stirrer having rotating arms positioned within said vat, a source of liquid under pressure, a source of compressed gas, the improvement wherein said rotating arms comprise concentric, spaced inner and outer tubes, means for connecting said source of liquid to said space between said inner and outer tubes and said compressed gas source to said inner tube, and said inner and outer tubes containing aligned holes at longitudinally spaced positions along the complete length thereof and about the periphery of said tubes for simultaneously injecting liquid under pressure and compressed gas into said suspension as said arms rotate.

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