Grain distributing device for grain drying machine

The invention discloses a grain separating device for a grain dryer, and relates to the technical field of grain dryers, the grain separating device comprises a shell, a first rotating shaft is rotatably connected to the interior of the shell, a layering plate is fixedly connected to the interior of the shell, and a fourth rotating column and a third rotating column respectively sleeve the outer side of the first rotating shaft and are located below the layering plate; according to the grain drying device, different types of grains can be effectively screened through the grain separating mechanism in the grain drying box, the filter plates can be replaced according to the types of the grains before the grains are discharged to a drying area, and therefore the grains can be better screened and separated; the grain falling speed can be effectively reduced through rotation of two first stirring plates and second stirring plates, the situation that grain distribution is affected by accumulation of the grains due