On the reverse stroke the rubber scraper blade, unhindered in this direction by the steel comb, is free to pass over the previous scrapers deposit of abrasive (B). The abrasive is pushed forward to a final corridor positioned at right angles to the booth where it conveys the abrasive to an elevator and is recycled.
The depth of the recovery channel is only 5" ensuring that in many instances, ie. Those where objects being taken into the booth may be carried by hand, it can be located directly onto an existing factory floor. When a flush finish is required between the factory floor and the blast room, only minor excavation is required.
Developed initially for the steel grit and shot, the scraper works well most blast media. Its key advantages include a low profile, requiring little or no excavation, low purchase and installation costs.
The scraper floor requires less maintenance than other mechanical floors which contributes to its greater operational economy.
Additionally, the scraper takes less time to install than other mechanical systems. The feature helps cut down on lost production time when the scraper is installed as a replacement system in an existing enclosure.
The scraper system is covered by a pedestrian grating on which the operator stands and through which the abrasive falls. In certain applications when heavy items are being processed, this grating can be increased in strength to provide greater loading capacities.
An alternative method of supporting a heavier item is to incorporate rails into the floor, positioned conveniently between the recovery corridors on which a cart can be mounted.