TWO-CHANNEL PNEUMATIC CONVEYING DRYER Russian patent published in 2007 - IPC F26B17/10 

FIELD: chemical industry; microbiological industry; food-processing industry; other industries; production of the devices for drying of the dispersed materials.

SUBSTANCE: the invention is pertaining to the devices for drying of the dispersed materials and may be used in microbiological industry, food-processing industry, chemical industry and other industries. The technical result of the invention is the increased efficiency of the drying of the dispersed materials. It is attained by the fact, that in the in the two-channel pneumatic conveying dryer containing the main spiral channel formed by the main spiral partition and from above and from below hermetically closed accordingly by the cover and the bottom with formation of the whirlpool chamber, and the additional spiral channel formed by the additional spiral partition from above and from below hermetically closed accordingly by the cover and the bottom. The whirlpool chamber is rigidly connected to the coaxially disposed separation chamber of the unloading cyclone with the exhaust pipe for the heat-carrier discharge in the atmosphere, and the additional spiral channel is connected to the self-contained cyclone having the rotary lock connected to the inlet fitting pipe of the additional spiral channel, which outlet is connected to the inlet of the separation chamber of the self-contained cyclone also having the exhaust pipe for withdrawal of the heat-carrier in the atmosphere. On the bottom of the body of the whirlpool chamber there is the fixed vibrator, the optimal parameters of the vibration treatment of which are the vibration level - in the range of 70... 85 dB, the frequency of vibrations - in the range of 31.5... 125 Hz, the action time - 5 seconds with the interval of 30 seconds.

EFFECT: the invention ensures the increased efficiency of drying of the dispersed materials.

2 cl, 2 dwg