Abstract: A device for discharging pulverulent products contained in a cylindrical silo from an appropriate part of the lower periphery of the silo, in which a radial horizontal arm equipped with an Archimedia's screw is placed in the immediate vicinity of the lowest part of the silo and is mounted on a turret, in which there is placed a fixed vertical shaft co-axial with the silo, having a first pinion which cooperates with a second pinion secured to the shaft of the Archimedean screw, and wherein a chain given by a motor is provided to rotate the arm and the turret around the axis of the silo.