Pit & Quarry, July 2015
CRUSHER SAFETY the feeder Sensors obviously wont pull a large rock from the crusher for you though They still cause the operator to react Smith says The oversized piece of material still has to be extracted You have to shut down the plant Its not a perfect solution but it does help you from plugging the crusher Crusher design is another area some manufacturers have focused on to help producers and recyclers avoid blockages and create safer work environments Sandvik for example addresses the blockage issue with its Prisec horizontal shaft impact HSI crusher According to Rowan Dallimore an impact crusher manager at Sandvik the Prisec model can be cleared while the crusher is running To clear blockages Dallimore says users stop the feeder and activate the hydraulic system This lifts either the first or second curtain allowing a blockage to pass Rock breakers are useful for keeping larger rocks from clogging and damaging the crusher through the crusher Once the blockage has been cleared the curtain can be lowered and they will reset automatically into the previously set position with the hydraulic system switched off and the feed re started by the crusher says Dallimore who estimates that the Prisec clears about 90 percent of blockages without having to stop the crusher All of this is done with the crusher still running and no operator intervention inside the crusher Such a system saves users considerable time too Clearing a blocked crusher can take an hour or more Dallimore says He estimates that a typical blockage occurs in a stationary plant between five and six times a year with mobile crushers experiencing even more blockages Recyclings unique issues A mobile C D recycling application which presents contaminants to a crusher has its own challenges With the recycling business we Dont let an ounce of dirt STOP 1000 TONS OF ROCK Improved Innovative Sealing Technology The Sealmaster family of mounted bearings has a proven history of performance with innovative seal design specifc for challenging applications Simplifed Designs Easier Installation The Browning TorqTaper Plus shaft mount speed reducer uses a patented single mounting bushing and requires no special tools for installation Lifecycle Engineering Services We can help you operate at maximum effciency Call 606 564 2477 @ AggSolutions PowerTransmissionSolutions PowerTransmissionSolutions com Aggregate Regal Browning and Sealmaster are trademarks of Regal Beloit Corporation or one of its afliated companies 2015 Regal Beloit Corporation All Rights Reserved MCAD14021E Form 9286E 42 PIT QUARRY July 2015 www pitandquarry com
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