The PIZETA screw conveyor transports raw materials in a continuous and constant way to the relevant machine. It has a tubular body with a spiral screwinside, which can be designed with a variable gauge to meet the client’s particular requirements. The auger rotation is driven by a motor reducer to guarantee the delivery required by the client. The conveyor has a safety system to prevent blockages in the unloading outlet. This prevents damage to the machine in the case of a malfunction.