10.2 Abrasive-return systems (fully automatic)

As regards the fully automatic return the entire floor of the hall is equipped with a return system.

Scraper system
Sheet metal paddles with rubber tape draw the abrasive over the floor of the bucket elevator. During the back motion the paddles fold down and run over the abrasive. The system is simply structured and convinces by its low building depth.

Operating principle of a
scraper system(side view)

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Vibration conveyance system
Feeding of the troughs is performed via the metal sheet funnels, the troughs are oscillating into the direction of the bottom. These vibrations cause the abrasive to “jump” forward. Because transport takes place in the air the system requires less maintenance and wear and tear are low as well.

Operating principle of the
vibration system (side view)
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10.3 Reprocessing

All systems are based on the unitised construction principle. They consist of the bucket elevator, the abrasive cleaner with precipitation of coarse particles and air separation as well as a storage facility. Dimensioning is adapted to the return system and the abrasive circu lation. Optionally with magnetic sepa rator to separate the abrasive from steel particles.

Processing (principle)

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