Abstract: An improved grain drying apparatus of the type having a bin with a perforated floor through which hot air is blown upward for grain drying purposes, and a rotary sweep assembly employing a wet grain distributing auger on its lag side and a dried grain retrieving auger on its lead side. One improvement includes an inclined elongate plate forming an overflow dam which extends along the floor on the lead side of the retrieving auger and which is connected to the sweep assembly for rotation therewith so as to build up the thickness of dried grain on the floor ahead of the retrieving auger to increase the resistance of the dried grain to the upward flow of hot air on the lead side such that a greater proportion of hot air will flow upwardly through the floor on the lag side through the wet grain being deposited thereon.

Abstract: An improved grain drying apparatus of the type having a bin with a perforated floor through which hot air is blown upward for grain drying purposes, and a rotary sweep assembly employing a wet grain distributing auger on its lag side and a dried grain retrieving auger on its lead side. One improvement includes an inclined elongate plate forming an overflow dam which extends along the floor on the lead side of the retrieving auger and which is connected to the sweep assembly for rotation therewith so as to build up the thickness of dried grain on the floor ahead of the retrieving auger to increase the resistance of the dried grain to the upward flow of hot air on the lead side such that a greater proportion of hot air will flow upwardly through the floor on the lag side through the wet grain being deposited thereon.