Coating apparatus having opposed atomizing nozzles in a fluid be

Details Coating apparatus having opposed atomizing nozzles in a fluid be Coating apparatus having opposed atomizing nozzles in a fluid be

1992-06-04

1993-10-19

Drodge, Joseph W.

Coating apparatus

Control means responsive to a randomly occurring sensed...

Temperature responsive

34 57A, 118 20, 118 24, 118 62, 118303, 118316, 118692, 118697, 118DIG5, 261 5, 261 782, B05B 700

Patent

active

052541681

ABSTRACT:
A fluid-bed particle coater having a dual-jet and spray arrangement and including an upstanding column which has an upper cylindrical section, a tapered intermediate section and lower cylindrical section. Depending from the lower cylindrical section is a cylindrical chamber which is inner-connected to tubular sections adapted for introducing multiple air streams via separately controlled inlet openings. The dual-jet and spray construction includes an upwardly-facing spray nozzle positioned in coaxial relationship to the tubular sections and a draft tube, and a downwardly-facing spray nozzle contained with a fountain tube which is disposed above the draft tube. The fountain and draft tubes concentrically intersect about the intermediate section of the column in an opened telescopic arrangement. The dual-jet and spray particle coater provides multiple coating and drying zones and is conveniently adapted with a completely integrated computer control system that provides for automatic and continuous monitoring and control of all fluid flowrates, temperatures and critical pressure measurements throughout the fluidized coating system.

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patent: 4895733 (1990-01-01), Imaniois et al.
patent: 4960244 (1990-10-01), Maag et al.

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