AirScrape Conveyor Belt Skirting

AirScrape addresses one specific part of a belt conveyor transfer zone, the interface between the material stream, the moving belt and the side enclosure. ScrapeTec describes the product as a contact free skirting system that is suspended above the belt edge.

How the product works

The product uses angled, hardened lamellae. According to ScrapeTec, their arrangement directs induced air from the outside toward the center of the belt. The same geometry is intended to guide particles that move toward the belt edge back into the conveyed stream.

This principle differs from conventional flexible skirting that maintains rubbing contact with the belt. A contact free arrangement removes continuous skirt drag at this interface. It does not remove the need to inspect belt tracking, belt sag, transfer geometry or material buildup.

Why transfer zone conditions matter

NIOSH identifies belt loading, material travel, return side carryback and discharge as four important locations for conveyor dust release. Its guidance describes skirting as one part of a partial enclosure. It also stresses that enclosure size, displaced air, belt support and local exhaust can influence the result.

AirScrape should therefore be evaluated as one component in a transfer point system. The review must include the loading chute, material trajectory, belt support, enclosure volume, dust extraction, access and downstream carryback control.

Selection information to prepare

• Material identity, particle size distribution, moisture and abrasion.
• Belt width, profile, speed, direction and expected lateral movement.
• Loading trajectory, feed rate and impact position.
• Available clearance beside and above the belt.
• Displaced air and required dust control performance.
• Inspection, cleaning, guarding and safe isolation method.

Request the current installation instructions and operating limits for the offered size. Verify performance under representative material and airflow conditions. A product video can explain the geometry, but it cannot establish the emissions result for another transfer point.

Evidence and sources

The AirScrape operating description comes from the current ScrapeTec product documentation. General statements about conveyor dust, skirting and transfer point design are based on NIOSH engineering guidance. Safety planning should also follow the applicable machinery rules and site isolation procedure.

• NIOSH conveyor dust control guidance
• HSE conveyor guarding and isolation guidance
• ScrapeTec AirScrape product documentation

Define the acceptance test for AirScrape

Before installation, record the present dust and spillage condition, belt alignment, skirt clearance and extraction settings. After installation, inspect the same operating duty with the same material and throughput. Useful observations include visible escape at the belt edge, accumulated material, contact marks, belt damage and the maintenance time needed to keep the transfer zone stable. If an emissions target is important, use an appropriate measurement method rather than relying only on a before-and-after video.

Commissioning should also confirm that the lamellae remain clear of the belt throughout normal belt movement and loading. The contact-free principle depends on maintaining that geometry; incorrect alignment or material buildup can change the interface. Record inspection points and safe adjustment steps in the maintenance plan.