Agitating – Stirrer within stationary mixing chamber – Rotatable stirrer
Patent
1994-04-08
1995-10-24
Cooley, Charles E.
Agitating
Stirrer within stationary mixing chamber
Rotatable stirrer
366149, 3663253, 3663271, B01F 704, B01F 1506
Patent
active
054604486
ABSTRACT:
A device for conditioning feed materials such as flours, soy products, and the like has an elongated receptacle forming side-by-side intercommunicated cylindrical chambers of substantially equal diameter. Each chamber has a rotatable shaft extending longitudinally therethrough. Each shaft has a plurality of beaters extending radially from the shaft. A motor and gear assembly coupled to the shafts co-rotate the shafts. Upon co-rotation of the shafts, the beaters intermesh for mixing materials that have been introduced through an inlet of the preconditioner. In one embodiment, the beaters are oriented on the shafts such that selected beaters on one shaft sweeping feed materials in one direction (e.g., upwardly) advance the material substantially into selected beaters, located on the other shaft, sweeping feed materials in substantially the opposite direction (e.g., downwardly). This beater relationship provides a high degree of product shear and interference and product retention within the preconditioner. In another embodiment, the beaters are oriented to advance feed materials more rapidly near the inlet and outlet of the preconditioner by having a pitch of the helix formed by the beaters at the inlet and outlet being greater than a pitch of the helix formed by the beaters intermediate the inlet and outlet. Additionally, a substantially elliptical shroud surrounds the conditioning receptacle for forming a cavity into which steam for thermal heating may be introduced.
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