FIELD: agriculture, heating.
SUBSTANCE: method involves continuous or intermittent loading of grain into drying chamber through a dosing feeder, transporting the flow of grain through a winding chute, ensuring continuous heating of grain, removing water vapours, unloading into bags or a clamp. The flow of grain is supplied to the drying chamber from the dosing feeder and is transported downwards through the winding pipe chute with several windings which is twisted around the vertical axis of the chamber. The total length of the chute is divided into sections with pitch t between them, at the entry of each section the flow of grain is treated with high-speed, uplift-transporting, inducing jets of heating air. The jets are set circumferentially round the inner perimeter of each section and at equal distance from each other, they can be inclined in unison at an angle α or β from the axial direction with respect to the inner wall of the pipe section thus providing clockwise or counterclockwise swirling of the flow of grain in each section around its axis and along the total length of the chute on the whole. At the outlet of the chute lower winding the flow of grain is supplied to the dosing unloader and loaded into bags, the humid air is separated from the flow of grain and forwarded into dust collecting apparatus with swirled counter flows where the humid air is separated and withdrawn into the atmosphere by the fan. The collected dust and grain are resupplied to the dosing feeder from where the grain is loaded to the chute upper winding cross its axis. The air jets for each section are formed and blasted from section collectors which are provided with the heating air from one heat generator, axis of the drying chamber is inclined at an angle y with respect to the vertical axis. Inducing heating air jets are supplied to the end wall of the chute upper winding as well.
EFFECT: efficient and mobile method of grain drying.
4 cl, 5 dwg
