MATERIALS HANDLING
The project included
upgraded transfer points to eliminate belt sag and improve sealing, as
well as belt cleaning and alignment systems
it detects slight misalignments initiated by unbalanced loads and fouled rollers, using the force of the belt to immediately adjust its position and realign the path. Te tracker keeps the belt in alignment with automatic corrections to reduce edge damage, prevent spillage and maintain belt health.
CARRYBACK To address the issue of carryback, technicians installed a two-stage belt cleaning system. Te primary unit is the QC1 Cleaner HD blade. Engineered for head pulley diameters from 12-24in (~305-600mm), the QC1 HD is suited for belts from 18-96in wide (~400- 2400mm) and speeds up to 900FPM (4.6 m/sec). Te unit’s patented constant angle radial pressure (CARP) design maintains cleaning performance through all stages of blade life, and the rugged 3/8in. (95mm) steel tubing main frame holds the cleaner snugly in place. Mounted directly after the primary
cleaner, the Martin SQC2S secondary cleaner features individually cushioned tungsten carbide blades for effective cleaning without risk to the belt or splices. Patented rubber buffers maintain the cleaning pressure throughout blade life. Like the QC1, blade removal and
Before the upgrade, fugitive material required about 90 man-hours per week to safely clean and haul away
replacement is a simple operation by removing the lock pin and sliding out the cartridge.
RESULTS Plant officials are extremely pleased with the outcome, which has drastically reduced the amount of dust and spillage, and with it the unproductive labour time to deal with the consequences. Gilbertson estimated that the total maintenance time to manage fugitive material on both conveyors is now down to about eight hours per week, with belts and other components no longer showing signs of premature wear. In addition to
the estimated US$14,000 per month labour savings, longer service life from belts and components are expected to further increase the benefit. Moreover, company personnel spend less time working in close proximity to the moving conveyor, reducing potential risk, and the manpower savings can be applied to more productive activities. “We’re very happy with the results,”
Gilbertson states. “What used to be a huge maintenance task is now just occasional sweeping.” Te Coffeyville facility is already considering proposals to upgrade additional conveyors, as well as future training and service agreements.
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