A screw conveyor is a mechanical device used to transport bulk materials from one location to another. It consists of a rotating helical screw, or auger, enclosed within a tube or trough. As the screw turns, it moves the material along the length of the conveyor, making it efficient for handling various types of materials, including grains, powders, and slurries. These conveyors are commonly used in industries such as agriculture, food processing, and mining. They can be designed for horizontal, inclined, or vertical transport, depending on the specific needs of the application. The simplicity and reliability of a screw conveyor make it a popular choice for material handling systems.