Emptying device for silos

In an apparatus for emptying bulk materials from a silo or the like and having a vertical telescopic pipe means for conveying said bulk material downwardly through said silo, and clearing means for moving said bulk material from the surface thereof into said telescopic pipe means, said clearing means being rotatable about the axis of said telescopic pipe means and movable vertically in said silo to follow the changing surface level of said bulk material, said telescopic pipe means being adapted to follow the vertical movement of said clearing means by telescopic retraction and extension and comprising an axis, an upper pipe means coupled to said clearing means for vertical movement therewith, a pipe inlet associated with said upper pipe means to receive said bulk material from said conveying means, and at least one lower pipe means telescopic with respect to said upper pipe means, the improvement which comprises:

• said lower pipe means being rotatable about said axis by a rotary drive means;
• said upper pipe means being rotatably fixed about said axis relative to said lower pipe means through a rotary coupling;
• said rotary drive means being associated with said upper pipe means to rotate said lower pipe means through said upper pipe means and said rotary coupling;
• said clearing means being rotatable about said axis, and said rotary drive means being associated with said clearing means to rotate said upper pipe means through said clearing means;
• vertical guide means disposed at the walls of said silo, frame means carrying said clearing means and being vertically guided and rotatably fixed relative to said silo about said axis by said vertical guide means;
• and, said rotary drive means being carried on said frame means.