VENTILATED HOPPER Russian patent published in 1995 - IPC

FIELD: agriculture, particularly, agricultural engineering. SUBSTANCE: this hopper incorporates perforated housing having coniform cover and bottom, regulating ring, discharging device, return grain feed pipe, upper and lower cylindrical perforated pressure chambers for drying agent and cooling air to be taken in 2:1 ratio, which are positioned one above other in between housing and air vent pipe and separated one from other by blind partition, upper chamber containing coniform grain flow divider and communicating with drying agent supply system air distributor, lower chamber communicating with cold air supply system air distributor, perforated air discharge pipe with blanked-off upper end portion, and return grain flow pipe. Drying agent supply system includes circular-section air distributor having openings in its lower portion and branch pipe in its upper portion, air supply pipe having control valve on its lower end and communicating with air distributor branch pipe via its upper end and with air-distributing pipe running from heat generator via its lower end. Pipes are externally coated with heat-insulating material. Cold air supply system includes circular-section air distributor having openings in its upper surface and branch pipe communicating with fan on its lower surface. Used drying agent and internal annular space air (fill) suction system is provided with outlet pipe having stopped-off upper end and branch pipe communicating with this outlet pipe and fan. EFFECT: more sophisticated design. 3 cl, 3 dwg