FLUIDISED BED GRANULATOR Russian patent published in 2017 - IPC F26B17/10 F26B3/12 

FIELD: chemistry.

SUBSTANCE: invention relates to drying solutions, melts, suspensions and production of granules of different substances and can be used in microbiological, food, chemical and other industries. Fluidised bed granulator comprises a drying chamber. Each pneumatic sprayer comprises a body with supply of sprayed initial material and air, a jet-guiding device and a sprayer, body is made in form of an inverted cup, in bottom of which there is a threaded hole for attachment of axially symmetric body of central cylindrical insert, to inner side surface of housing, in its lower part, is fastened a cylindrical sleeve of jet-guiding device for air supply under pressure to sprayer via annular gap, formed by outer surface of central cylindrical insert and inner surface of sleeve, wherein annular gap is connected to annular chamber, and to central cylindrical insert is coaxially fixed a sprayer, made in form of a conical flared end, in lower part of which, perpendicular to its axis, is rigidly attached an end round plate with at least three conical throttling holes with apex angle of cone, lying in range from 45° to 90°, on side surface of flared end there are at least two rows of cylindrical holes, with axes in planes perpendicular to axis of flared end, and in each row there are at least three holes, jet-guiding device for air supply under pressure to sprayer there is a screw, and is formed by circular screw gap, formed by outer surface of central cylindrical insert and inner surface of sleeve, on which there are helical grooves, wherein helical gap is connected to annular chamber, and inner surface of cylindrical throttling holes, with their axes lying in planes perpendicular to axis of flared end, is helical.

EFFECT: technical result is improvement of drying efficiency.

1 cl, 2 dwg