The present invention is related to means for storing materials of difficult flow, such as flake-shaped materials, and more particularly the invention being related to devices for discharging silos that store these types of materials. The present invention is advantageous over the state-of-the-art devices in that it achieves an efficient management of the discharge of plastic flakes without interruption periods, i.e., with a constant flow and without additives (powders) with a simple special design of the geometry cone without mobile parts. A positive pressure system only requires a discharge screw for leading the material towards a rotary valve, which not only involves the discharge of flakes by gravity but also the pneumatic conveying from the silo to other point of the process. The system is characterized in that it comprises, at the lower outlet of the silo and under the normal cone, a special cone, which conformation and size at the lower portion thereof is that of a normal cone , which lower portion has a rectangular shape with the suitable size for discharging the product in a hopper, which inner portion includes at least a helical screw the special cone includes a longitudinal bulkhead for improving the flow of flaked material upon breaking the vault formation.La presente invención está relacionada con medios de almacenamiento de materiales de difícil flujo tal como materiales en forma de hojuela, y más específicamente está relacionada con dispositivos para la descarga de silos de almacenamiento de estos materiales. La presente invención tiene las ventajas contra las del estado de la técnica, de que logra un manejo eficiente de la descarga de hojuela plástica sin lapsos de interrupción, es decir con un flujo constante y sin necesidad de aditivos (polvos) con un diseño del cono de geometría especial pero simple y no tiene partes en movimiento. Para un sistema en presión positiva solo se requiere de un tornillo de descarga para dirigir el material hacia una vá
