The shaftless screw conveyor is a type of machine for conveying items. Compared with the traditional shafted screw conveyor, it adopts a five-center-axis design and uses a flexible integral steel screw to push materials, so it has the advantages of strong anti-winding, strong sealing, safe and convenient operation, etc. The shaftless screw conveyor is mainly composed of a drive device, a head assembly, a casing, a shaftless screw body, a trough liner, a feed port, a discharge port, a machine cov