The hopper is suitable for vertically conveying powdery, granular and block materials, and can also lift abrasive materials. The material temperature is generally not higher than 200 °C, and the height is 40m. The intermediate section is used in combination with the hopper. It has good conveying capacity, small driving efficiency, inflow feeding, gravity-induced unloading, long service life, good sealing performance, stable and reliable operation, convenient operation and maintenance, compact structure, good rigidity and low operating cost.