BOILING BED GRANULATING MACHINE Russian patent published in 2009 - IPC F26B3/12 

FIELD: heating; drying.

SUBSTANCE: present invention pertains to technology of drying solutions, melts, suspensions and obtaining granules of different substances and can be used in microbiology, food, chemical and other industries. Boiling bed granulating machine consists of drying chamber, comprising cone shaped case, lower part of which is joined to cylindrical part, in which there are grids and connection pipe for letting in fluidised drying agent from heat generator. Top part of the case is joined to the cylindrical part and cone-shaped part of the drying chamber, in which there is a connection pipe for holding the control and measuring equipment. The cone-shaped part of the drying chamber is joined to vertical connection pipe and the connection pipe for outlet of exhaust drying agent, joined to battery-backed cyclone filter. The granulating machine comprises two feeders: one in the upper part, and the other in the lower part. In the vertical connection pipe there is a socket piece for letting in raw materials, for example salt solution, and oppositely located socket pieces for letting in spray agent, for example gas or air. In the horizontal inlet, there are connection pipes for letting in raw materials and oppositely lying connection pipes for feeding in the spray agent, in form of gas or air. The granular product is released through worm conveyer with valve. The feeders are in form of acoustic burners, consisting of case, inside of which there is an ultrasonic generator in form of nozzle and ring shaped cavity resonator. The case is in form of vertical cylinder bushing, in the upper part of which there is pipe for letting in air, and perpendicular to its axis, there is pipe for feeding in solution. Inside the case, in line with it, bushing is rigidly fixed with upper and lower flanges. The lower flange is rigidly fixed in groove on the case, and inside the bushing, in line with it, there is ring shaped cavity resonator, which is in form of a cup with conical surface. The cup is pressed onto a beam with diameter d, equal to the diameter of the resonator, and in its tail end there are locking disks, which are in the form of elastic blades, touching the inner surface of the bushing. In the lower flange there is at least one nozzle at an angle 20°÷40° to the axis of the resonator. The extension of the axis of the nozzle lies within circumference in the middle part of the conical surface. On the inner surface of the bushing, there are in-line tapered and cylindrical openings.

EFFECT: increased efficiency of drying.

2 cl, 2 dwg