SHAFT GRAIN DRIER Russian patent published in 1999 - IPC

FIELD: drying equipment, applicable for grain drying in shaft recirculating grain driers. SUBSTANCE: the drier has parallel-arranged recirculating and drying-cooling shafts. A heating chamber and heat-and-mass exchanger are installed above the shafts. To provide pliant interchangeable systems of grain drying of various quality, the heat-and-mass exchanger above the shafts is furnished with a vertical partition with a bypass opening, separating it into two parts; installed on one of them above the recirculating shafts is the heating chamber, and in the other above the drying-cooling shafts - an additional vertical partition with a bypass opening adjustable by a damper and positioned below the bypass opening in the first partition. Installed above the heat-and mass exchangers of the drying-cooling shafts are overflow devices 63-64, whose outlet connections 65 and 66 are located below the level of bypass partition 14 in additional vertical partition 12. EFFECT: enhanced drying capacity, improved quality of grain, reduced power consumption. 4 cl, 4 dwg