Abstract: An abrasive grain-milling unit and a friction grain-milling unit are located on upper and lower portions of a pedestal, respectively. The friction grain-milling unit includes a grain feed trough to which a milled grain discharge trough of the abrasive grain milling unit is connected. A two-way grain feed trough and change-over valve is located above the abrasive grain-milling unit and is capable of selectively feeding grains either directly to the friction grain-milling unit or to the friction grain-milling unit via the abrasive grain-milling unit.

Abstract: A grain pest control apparatus includes an input unit adapted to accept input of grain; a heating unit adapted to heat the grain supplied from the input unit; and a removal unit adapted to remove heat from the grain heated by the heating unit, wherein the removal unit includes a cylindrical body provided with an air passage hole in a wall surface and adapted to receive the heated grain and a heat collecting chamber installed by surrounding the cylindrical body and connected to an exhaust channel, and removes heat from the heated grain by causing air supplied into the cylindrical body to pass through the air passage hole and escape via the heat collecting chamber.

Abstract: There is provided a grain-milling machine capable of shortening the time required for lot changing and reducing electricity costs. A grain-milling machine comprising a vertical abrasive type grain-milling unit and a vertical friction type grain-milling unit mounted on a pedestal, the abrasive type grain-milling unit and friction type grain-milling unit being located on upper and lower portions of the pedestal, respectively, the abrasive type grain-milling unit including a milled grain discharge trough, the friction type grain-milling unit including a grain feed trough to which the milled grain discharge trough of the abrasive type grain milling unit is connected, and a two-way grain feed trough and change-over valve located above the abrasive type grain-milling unit and capable of selectively feeding grains either directly to the friction type grain-milling unit or to the friction type grain-milling unit via the abrasive type grain-milling unit.

Abstract: A grain pest control apparatus includes an input unit adapted to accept input of grain; a heating unit adapted to heat the grain supplied from the input unit; and a removal unit adapted to remove heat from the grain heated by the heating unit, wherein the removal unit includes a cylindrical body provided with an air passage hole in a wall surface and adapted to receive the heated grain and a heat collecting chamber installed by surrounding the cylindrical body and connected to an exhaust channel, and removes heat from the heated grain by causing air supplied into the cylindrical body to pass through the air passage hole and escape via the heat collecting chamber.