Processing Magazine

Circular vibratory bag dumper screener protects against dust contamination

April 29, 2009

A new circular vibratory bag dump screener removes oversize particles from manually-dumped bulk materials while protecting the operator and plant environment against dust contamination. A 40-inch diameter separator causes bag scraps, agglomerates and other oversize material to travel across the screen and discharge through an upper spout, while on-size particles pass through apertures in the screen and a lower discharge spout at high rates. Ambient air and dust from dumping activities are drawn onto the exterior of two cartridge filters that derive vacuum from a top-mounted exhaust fan. Dust accumulated on each filter''s exterior surface is alternately dislodged using short blasts of air from pulse jet nozzles within the cartridge filter on a timed cycle, providing continuous, efficient operation. Dislodged material falls into the screener. On-size material gravity-discharged from the screener''s outlet can be fed into a conveyor or other process equipment. The bag dump screener is also offered in 24-inch and 30-inch diameters, and available to industrial, 3-A, FDA, BISSC and other sanitary standards.