How to achieve a clean Conveyor Path

Innovative Belt Cleaning Technology eliminates Carryback at Cement Plant

How to achieve a clean Conveyor Path

After installing an innovative primary cleaner designed for punishing applications a Detroit cement producer could stop excessive carryback and equipment fouling. With a significant reduction in carryback, spillage, and labor for cleanup, the plant was able to improve work­place safety, lower the cost of operation and see a quick return on investment.
(ed. wgeisler - 26/3/2018)
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Cleanscrape Installation

After a site inspection Martin technicians concluded that the #14 conveyor was an excellent candidate for their Cleanscrape primary cleaner. This cleaner system requires considerably less space than other primary cleaners, can be effective enough to eliminate the need for a secondary blade, and is proven to deliver as much as four times the life­span of competing urethane blades.

The flexible cleaner is installed diagonally across the discharge pulley, forming a three-dimensional curve beneath the discharge area that conforms to the pulley’s shape. The unique design incorporates a matrix of tungsten carbide teeth and is tensioned lightly against the belt to prevent damage to the belt or splices. Despite extremely low contact pressure, it has been shown to remove as much as 95% of potential carryback material.

Designed for belt speeds up to 780 fpm (4 m/s) for mechanically spliced belts, pulley diameters up to 50 inches (1270 mm), and belt widths up to 96 inches (2438 mm), the Cleanscrape is engineered to perform under the punishing conditions of cement applications and other bulk handling industries. Its patented design requires very little maintenance. The tensioners are tightened during initial installation, and typically no further adjustment is required over the life of the blade.


Mounted diagonally, commonly at a 17º angle, the Cleanscrape spans the entire belt profile.                    

Results

As cargo with a moisture level between 10 and 15 percent was loaded onto the belt, dust and fines built up into a thick paste as usual, but ended up being fully removed from the belt. “For this application, we were very surprised by how well it worked,” Accomando said. “The return side of the belt might have a little bit of wet material still on it, but nothing even remotely close to what it used to be.”

After a full year of punishing 24/7 operation with little downtime through conditions that included cold slush and mud, as well as hot and dry dusty material, the original CleanScrape cleaner continues to perform consistently well, without a single adjustment. The cleaning schedule has been altered from a 2 to 3 person crew over a full shift twice per month, to just a single worker hosing down critical areas for an hour or so, once per month. “We haven’t touched the blade or tensioner once since they were installed a year ago,” Accomando pointed out.

Then he added: “In addition to their equipment being top notch, Martin’s service is what stands out most to me. They follow up regularly to make sure that we’re happy with the product – and we are, absolutely!”

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