It is oriented on transporting dust-like, powdered, granular and small-sized traffic. Transporting in conveyor confined space and airtight joining of it’s sections allows to transfer traffic with a high productivity on a 30 miters distance without any losses (Dust emission, materials pour and other are practically full). In conveyor using in the line of mechanized load-unload, manual labour is not used. Traffic screw transfer and using electric motor with a small power allow to economize electricity in traffic transfer on a big distance (conveyor is made of separate sections with 0,5 ratio on a base length fixed in order). Transportation in a close case isolates dusty components from environment, that doesn’t allow dusty discharges in a working area and also possible bed smell propagation of component. Conveyor mounting could be horizontal or on-the-miter ± 20° (for the loose traffic).