Multiple pitch self-cleaning belt pulley

Details Multiple pitch self-cleaning belt pulley Multiple pitch self-cleaning belt pulley

1978-03-13

1979-12-25

Wyche, Benjamin

Conveyors: power-driven

Conveyor having impinging fluid to feed, shift or discharge...

Having cleaning means

198842, 198669, 74230, B65G 4500

Patent

active

041801555

ABSTRACT:
The invention pertains to a pulley for belt conveyors, particularly belt conveyors used in the conveying of stones, gravel, and the like wherein the pulley structure is self-cleaning of foreign matter received within the confines of the pulley to prevent belt damage. The pulley consists of a plurality of helically disposed webs spiralled about a rotatable shaft. A plurality of webs are defined upon the shaft on each side of the pulley central region wherein at least two separate webs define a set of multiple pitch helices, and each set is spiralled about the axis of rotation in an opposite direction wherein foreign matter received between the webs is moved to the pulley ends in a self-cleaning manner. A disc is utilized at the pulley central region to which the inner ends of the web sets are affixed and the periphery of the webs is of a greater axial dimension than the web plate to increase the belt surface loading area. The use of a plurality of helices in each web set increases the locations of belt engagement and support without detracting from the self-cleaning function.

REFERENCES:
patent: 1684254 (1928-09-01), Bailey
patent: 2660429 (1953-11-01), Lorig
patent: 2886169 (1959-05-01), Calder
patent: 3055229 (1962-09-01), Mecham
patent: 3626773 (1971-12-01), Loeffler

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