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Pulley prevents conveyor clogging

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article image The self-cleaning wing pulley.

BLUE Circle Southern Cement has solved a significant conveyor drum trouble spot on a 140 tonnes an hour conveyor belt system at its Waurn Ponds cement works in Victoria.

Because an unusual configuration on its M5 belt was necessary to accommodate an online chemistry analyser, Blue Circle experienced frequent problems in removing product that was landing on the underside of the belt and becoming part of a continuous and troublesome loop.

As the analyser was put in place to control the change in grading between two different types of limestone (lower and higher quality) - which feeds the M5 belt from belts M2 and M4 limestone feed belts respectively - the analyser demanded the return belt be a certain distance away from the top belt.

"To achieve this we had to put in another two snub drums and form a configuration which resembles a horizontal S-bend," Blue Circle maintenance coordinator Darren Thompson said.

"Because of the analyser, we had a complete wrap of belt, and as it went around product would fall with gravity onto the underside of the belt and clog the drum.

"To dislodge the clogged material, we installed a Kinder K self-cleaning conveyor wing pulley."

The M5 conveyor belt runs 24 hours a day, below a limestone shed, working eight hours with a tripper system and the other 16 hours with a grab crane that drops product onto the belt through hoppers.

The K self-cleaning conveyor wing pulleys are constructed specifically to dislodge material that builds up on pulley faces.

The principle behind the winged pulley is an inner self cleaning tapered cone that discharges material away from the belt to prevent build up on the pulley face - a primary cause of belt and splice damage.

Used often for large, lumpy, sharp or sticky materials, the unit has a solid bar for long lifespan and extra belt protection. Kinder and Co 03 9553 4533.

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