Screw conveyor is widely used in grain industry, building materials industry, chemical industry, machinery manufacturing, transportation industry and other sectors of the national economy. Screw conveyor is mainly used to transport a variety of powdery, granular and small block materials, the bulk materials transported are grain, beans, flour and other grain products, cement, clay, sand and other building materials, salt, alkali, fertilizer and other chemicals, as well as coal, coke, ore and other bulk goods. The screw conveyor should not transport materials that are easy to deteriorate, viscous, lumpy and easy to agglomerate. In addition to conveying bulk materials, screw conveyors can also be used to transport various bulk items. The screw conveyor can complete mixing, mixing, cooling and other operations while transporting materials. In ports, screw conveyors are mainly used for unloading, unloading operations and horizontal and vertical conveying of bulk materials in warehouses. The screw unloader that uses the horizontal screw shaft in direct contact with the material to unload the material layer by layer from both sides of the carriage has been successfully used in domestic ports for many years. The screw ship unloader, composed of horizontal screw conveyor, vertical screw conveyor and relative screw reclaiming device, has become a relatively advanced continuous unloading model, which is increasingly widely used in special terminals for bulk cargo at home and abroad
