Full definition
A belt cleaning device installed on the return strand, approximately 300-600 mm after the head drum, downstream of the primary cleaner, providing a second stage of carryback removal. Design: segmented individual blades (typically 100-200 mm wide) each mounted on an independent spring or air-cushion mount that conforms to belt surface irregularities (splice bumps, belt wander). Materials: polyurethane, tungsten carbide, or ceramic segments. The segmented design allows each blade to independently adjust to the belt surface, maintaining consistent cleaning pressure across the full belt width. Combined with a primary cleaner, a secondary achieves 90-95%+ carryback removal. Some systems add a tertiary cleaner (belt washing or V-plow) for near-perfect cleaning in sensitive environments. Installation: bolted to the conveyor structure, positioned where the belt has left the head drum and is running flat on the first return idler. Per CEMA 576. Brands: Martin DT2/SQC2, Flexco EZP2, ASGCO Razor-Back. Critical in food, pharmaceutical, and enclosed conveyor applications where spillage is unacceptable.