PURPOSE: To exhaust the grain uniformly and smoothly, in a grain distributor where the grain is supplied from grain lifter to the base of grain distributing screw then distributed through an elongated groove in the lower face of cylindrical member into grain storage chamber, by providing a barrier at the end of said cylindrical member while winding a screw having smally diameter around the screw shaft penetrating through said barrier.

CONSTITUTION: The grain dryer supplies the grain through an exhaust port of grain lifter E to the base of grain distributing screw B and distrubutes the grain through an elongated groove D in the lower face of cylindrical member C into grain storage chamber A. Here a barrier H is fixed at the end of cylindrical member C then a screw 3 having small diameter to pass through a through-hole 2 is wound around the grain screw shaft 1 penetrating through a through-hole 2 made through a barrier H. The grain advancing in a cylindrical member C is stoppoed at the barrier H to store predetermined amount of grain continuously in the cylindrical member C, then the grain is uniformly dropped from entire length of elongated groove D into grain storage chamber A. The dust at the end of the grain distributing shaft 1 is smoothly exhausted through a screw 3 and a through-hole 2 in the barrier H into the grain storage chamber A by means of the screw 3.