Dust

Powder Bulk Solids Staff | Jul 20, 2020

The contact-free AirScrape reduces material spill, dust formation, and explosion hazards at transfer points and other critical sections in the conveyor chain.

Because this system hovers freely above the conveyor belt, skirt friction and belt damage is eliminated and service life is extended.

“The AirScrape system – which encompasses inward facing, hardened-steel diagonal blades – operates according to a new principle where it hovers 1-2 mm, on the left and right side above the conveyor belt,” said Thorsten Koth, sales director, Scrapetec-Trading. “These blades deflect larger particles inwards, while using the air-flow of the conveyor belt and conveyed material to create an inward suction, flowing any dust and fine particles back into the product flow. Through these diagonally fitted blades and the speed of the running belt, air is drawn from the outside inwards. As a result, neither the dust nor material can escape.

“Conventional skirting is pressed against a conveyor belt to keep dust and material in the middle of the belt, but after a period, wear of the skirting and belt can be so severe, that material and dust escapes. Material spillage at transfer points needs to be removed and regular maintenance of belt skirting and transfer points is necessary.

“With the AirScrape dust-free and contact-free, side sealing system for belt conveyors, there is no skirt contact and therefore no belt wear or damage. Motor power requirements are reduced as there is no belt-skirt friction and because there is continuous skirting with no gaps, product loss is minimal.

“Studies show, that even three years after installation and with continuous use in harsh conditions, the AirScrape system hardly shows any signs of wear. Operational costs are also reduced because there is no need for spillage collection, regular maintenance, or replacement parts.”

This system is available in pairs of left and right hand 2-m, inter-connectable pieces, to form any required length and is available in three different base widths of 100 and 55 mm, to suit various belt widths and chute sizes. For flexibility on site, this system is completely extendable.

AirScrape is fitted using spacers, floating the blades just above the belt and is attached to the outside of the chute by utilizing existing skirt clamps or a simple bolt and nut system. It is longitudinally adjustable to follow the contours of conveyor belt rollers and the belt trough angle.

This durable system consists of non-flammable and anti-static polyurethane materials and blades made from Hardox/stainless steel. FDA-approved materials are also available for specific conveyor handling applications.

ScrapeTec, Kamp-Lintfort, Germany +49 2842 928040 www.scrapetec.com

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