Dual shaft preconditioning device having differentiated conditio

Details Dual shaft preconditioning device having differentiated conditio Dual shaft preconditioning device having differentiated conditio

1991-09-26

1992-11-10

Jenkins, Robert W.

Agitating

Stirrer within stationary mixing chamber

Rotatable stirrer

366300, 366330, B01F 704, B01F 706

Patent

active

051618885

ABSTRACT:
A preferred preconditioning device for use with an extruder includes two juxtaposed, frustocylindrical, intercommunicated chambers one of which presents a greater cross-sectional area than the other. A respective pair of rotatably driven mixing shafts extend axially through corresponding chambers with each mixing shaft having a plurality of mixing elements coupled therewith. The mixing elements are arranged, in order to present in cooperation with the chambers, a plurality of conditioning zones preferably including a mixing zone for initially mixing the material, an intermediate retention zone providing increased retention time for enhancing equilibration between solid and liquid portions of the material, and a final tertiary zone for comminuting clumps of material.

REFERENCES:
patent: 2017116 (1935-10-01), Bonnell
patent: 3901482 (1975-08-01), Kieffaber
patent: 4329069 (1982-05-01), Graham
patent: 4752139 (1988-06-01), Hauck

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