Vibrating helicoidal lift for transporting bulk products at temperature different to ambient, comprises helical channel wrapped around central shaft, and vibrating base

摘要

The lift has at least one helical channel (2) wrapped around a central shaft (1) and a vibrating base (3) supporting the assembly. The central shaft has a polygonal section with certain faces (6) receiving support braces (5) for the helical channel which are deformable in the YY' direction. The polygonal shaft has five to ten sides. The braces have a circular section and are made of the same material as the channel to which they are fixed. The coils of the channel are metallic, separated from each other, with a closed section and under a given electrical voltage which creates a heating effect inside the channel to heat the products. The braces are fixed to the central shaft and insulated from it by an insulating sole-plate (8). The faces of the shaft receiving the braces are concave or convex at ambient temperature and flat when the device is at the operating temperature above or below ambient temperature. The vibrating base has two out of balance motors (4) placed diametrically opposite relative to the central vertical axis XX' of the shaft and are mounted on supports which can position the motors at different angles of inclination relative to the XX' axis.