Since this product has many advantages such as reasonable design, unique structure, long service life, reliable operation, energy conservancy and high efficiency, safe sealing and convenient maintenance, and in addition, the conveying distance can be flexibly designed and arranged according to the specific requirement and this machine can be horizontally installed or the installation angle is ≤15°, its using performance is obviously superior to chute type spiral conveyor, embedded scraper conveyor and other conveying machines.