Rotary bucket elevator, also known as Z-type elevator, Z-type feeder, Z-type conveyor, has the advantages of large conveying capacity, high lifting height, stable and reliable operation, and long service life. This hoist can achieve multi-point unloading, reduce material damage rate, and is mainly suitable for conveying small, granular, and powdery non viscous materials. The rotary bucket elevator is a conveyor that transports materials through a hopper suspended on a chain inside a closed casing, and can be transported horizontally vertically horizontally in combination.