Abstract: A continuous flow grain dryer comprising a plurality of vertical columns for receiving and heating/drying grain, with each column having an inlet wall including side drying air inlets, and an opposite outlet wall including side exhausted air outlets, wherein the inlets and outlets are provided with diverters angularly extending towards a longitudinal axis of the column and defining a central clear region for permitting the free downward moving of the grain, with an air descending path being defined between an inlet and a downwardly adjacent outlet, and a tempering region being defined between a diverter and an associated opposite wall portion.

Abstract: An assembly is provided for collecting particles suspended in an air flow in grain drying machines. The assembly has a tubular structure formed by a primary cyclone and a secondary cyclone, wherein the primary cyclone has an inlet portion connected to a respective dryer air outlet and an outlet portion where an air particle separation zone is defined, and wherein the primary cyclone has a first outlet for air free of particles, and a second air outlet for air with particles to flow towards the secondary cyclone, with the particles separation zone including an inner cylinder defining a chamber for conducing particles to the secondary cyclone.