Spiral clean pulley
AssigneeDouglas Manufacturing Co., Inc.
InventorsPaul Ross, Benjamin Brewer, Alberto Chamorro, Dennis Grizzell, Jeffery Carlisle
Life of this patent
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Abstract
A conveyor pulley design incorporates a plow design that forces tramp material away from the belt and discharges material down and away from the belt, bearings, take-up assembly, maintenance equipment and personnel. The pulley uses a modular construction that allows for optimized manufacture and inventory processes and reduces the materials cost in the pulley
Claims12
A roller pulley for use in a belt conveyor system wherein a moving belt passes over a series of pulleys mounted to transverse shafts supported on an elongated support frame, comprising:
- a. An elongated core rotatably mounted to said frame for rotation about a longitudinal axis of said core;
- b. A central support section affixed to said core for rotation therewith said central support section having a circumferential width sufficient to provide support to said belt and a load carried thereby;
- c. A plurality of spiral flight sections affixed to said core and said central support section for concomitant rotation therewith;
- d. A pair of discharge plows mounted on said elongated core proximal the ends thereof and connected to one of said plurality of spiral flight sections, each of said discharge plows having a circumferential width sufficient to provide support to said belt and a load carried thereby;
- e. Wherein said plurality of spiral flights sections are mounted to said elongated core urge tramp material laterally along said elongated core from the center of said core to said pair of discharge plow, said discharge plows including a terminal wall forcing said tramp material outwardly from said elongated core.
A method of fabricating a roller pulley for use in a conveyor wherein a driven belt is supported on a plurality of pulleys mounted for rotation on shafts supported on a frame comprising:
- a. Forming a tubular steel core including opposing end plates for mounting to one of said shafts;
- b. Forming a radially extending center piece having an inner diameter commensurate with an outer diameter of said core and securing said center piece to said core approximately equally distant between said end plates;
- c. Forming a plurality of spiral flight sections and securing them to said core and said center section on each side of said center section such that said flight sections are in opposite sense from each other;
- d. Forming a pair of discharge plows including a terminal discharge and affixing said plows to each end of said core and to an adjacent spiral flight section such that said discharge plow forms a continuation of said spiral flight section.
Dependencies are inferred from the claim text.