TD isa fixed elevator categorized as feeding device of delivering powdery andgranular materials upward vertically. It adopts towing strap of transmission todrive the hopper to move and feeding is performed from the lower to the upperaccordingly.

 Bucket elevator discharges materialscentrifugally and feeds with them by draw-take out. Large quantity of feedingcan be obtained through small distances of bucket. It embodies merits of asmall occupational area, high efficiency of feeding, simple operation,convenience of installation and multipurpose applications. It applies to themanufacture of non-abrasive powdery and granular materials and especially inthe industries of dry mortar for construction, chemistry and foodstuff.