Looking at a drill rig with a dust collector mounted, all you see is: the pick up hood (1), the
suction hose (2), and a big box mounted somewhere on the rig, and hopefully no dust.
Every time a new drill rod is added, the big box will drop its contents of drill chips and dust
in a plastic sack (4), or just on the ground in a neat pile via the rubber dump valve (3).
What is happening inside the dust collector?
Flushing air and drill chips enter the filter housing through the rubber hose. Inside air and
chips hit a heavy steel wear plate, and the heavier chips ricochet downwards, into the
cortical part (5). Air and fine dust moves upwards towards the cylindrical filter elements (6).
The fine dust settles on the filter surface, the clean air passes through, and is picked up by
the fan (7) (or the venturi on the pneumatic models) and expelled out of the top of the dust
Every time the operator stops to add on another drill rod, suction stops so that the
accumulated chips can fall down. At the same time the filter elements are cleaned by
repeated air blasts from the inside. This happens automatically every time when drilling is
interrupted on the hydraulic units. The pneumatically driven dust collectors are all equipped
with a manual filter cleaning system.
1. Pick up hood
2. Suction hose
3. Rubber dump valve
4. Plastic sack
5. Bottom housing section
6. Filter elements
8. Hydraulic Motor