GRAIN DRYER Russian patent published in 2010 - IPC F26B17/12 

FIELD: agriculture.

SUBSTANCE: in grain dryer, comprising vertical shaft for grain formed by parallel installed perforated walls with zones of drying and cooling, grain exchangers arranged in shafts in zone of drying, air collection chambers formed by barrier boxes adjacent to side walls of shafts, mixing chamber, formed between zone of drying and zone of cooling, heat exchangers arranged in shafts of grain dryer and in mixing chamber, made of sides and channels, outlet device, air heater and fans, zone of drying is separated by partition with controlled valves into upper and lower zones, mixing chamber is separated from zone of cooling by partition and is connected to upper zone of drying by means of air duct, at the same time air collection chambers and heat exchangers, with horizontal partitions additionally arranged in them, are separated by partition between lower zone of drying and zone of cooling, cooling fan is arranged in zone of cooling, and heating fan is connected to air heater. Air duct is arranged as ribbed to increase extent of drying agent heating.

EFFECT: increased efficiency of grain dryer due to improved extent of drying agent application and improved conditions of operation due to reduction of fire and explosion risk.

2 cl, 3 dwg