PERFORATED PLATE FOR A FLUIDIZED BED COATING AND DRYING MACHINE HAVING UNIFORM DISTRIBUTION OF A FLUIDIZED BED, CAPABLE OF MULTIPLYING THE DRYING EFFICIENCY AND DRYING QUALITY OF AN OBJECT BY FORMING AN UNIFORM FLUIDIZED BED THROUGHOUT A WHOLE AREA THROUGH A BLOWING HOLE

摘要

PURPOSE: A perforated plate for a fluidized bed coating and drying machine having uniform distribution of a fluidized bed is provided to form a uniform fluidized bed throughout a whole area because hot air is blown to a second area where the influence of jetting pressure is little.;CONSTITUTION: A perforated plate(1) for a fluidized bed coating and drying machine having uniform distribution of a fluidized bed comprises a plate body(10), jetting nozzles(20), first blowing holes(30), and second blowing holes. The jetting nozzles are installed in the plate body and jet the jetting liquid in an upward direction. The first blowing holes are formed in a first area(A) of the plate body corresponding to the periphery adjacent to the jetting nozzles and the second blowing holes are formed in the second area of the plate body except for the periphery adjacent to the jetting nozzles. The hot air flowed from the lower part of a perforated plate is passed through the plate body and respectively transferred to the objects in the upper part of the perforated plate through the first and second blowing holes. A diameter of the second blowing hole is larger than the first blowing hole's.;COPYRIGHT KIPO 2012