Advantage of scraper recovery system in sandblasting room

Floor recovery system is a most important part for sandblasting room, it have semi-automatic recovery system and full automatic recovery system, usually have screw conveyor and scraper recovery system.

The scrapers comprise of a natural rubber flap set against a steel comb, multiples of which are set in long frames. Available in any length, each corridor moves in a reciprocating back and forth motion. Because in the media blasting room, the distance between the scrapers is less than the distance of travel, each scraper moves abrasive forward, as the rubber flap in this direction is locked against the steel comb behind it, to the next (A) in a shunting motion. On the reverse stroke the rubber scraper blade, unhindered in this direction by the steel comb, is free to pass over the previous scrappers deposit of abrasive (B). The abrasive is pushed forward to a final screw conveyor positioned lower the scraper where it conveys the abrasive to an elevator and is recycled.

The channel depth of the blast recovery system is only 200mm to 500mm 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. The scraper system is covered by a pedestrian grating (C) 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 bogie can be mounted.

Now many supplier used screw conveyor recycle shot blasting system to achieve full automatic recovery, but it have many disadvantages, such as:

1. It need very deep foundation pit

2. The concentricity is very poor, so it will lead to easy damaging the bearings.

3. It will be very difficult to change the wearing parts screw blade

4. The energy consumption is much more higher than the scraper conveyor.

Please do not hesitate to contact us if you are interested in sandblasting room.