Automatic interior cleaning system for a powdered material processing device

An automatic interior cleaning system for a silo comprising:

• a hollow pipe having closed ends;
• said pipe having a U-shape;
• a plurality of slits through said pipe;
• a first group of said slits facing a ceiling member of said silo;
• a second group of said slits facing a side wall of said silo;
• means for rotating said pipe;
• and
• means for feeding pulses of a gas to an interior of said pipe, whereby said pulses clean an interior of said silo.

An automatic interior cleaning system for a powdered material processing device comprising:

• at least one hollow member having closed ends;
• means for feeding pulses of a gas to an interior of said member;
• a plurality of slits for transmitting said pulses from said interior of said member to an interior of said device, whereby said pulses clean said interior of said device;
• and
• a drive assembly rotatably connected to said at least one hollow member such that said at least one hollow member rotates when said drive assembly is rotated.

An interior surface cleaning device for removing powdered material from an interior surface of a vessel, comprising:

• a hollow body having a closed end;
• said hollow body having a plurality of slits;
• a compressor connected to said hollow body supplying pulses of a gas to said hollow body;
• said hollow body rotatably connected within said vessel such that said slits are movable over an entire area of said surface to be cleaned.