- The Suction cleaners are used to remove the grain and the light waste it contains whilst retaining the heaviest products for subsequent retrieval.
- They are used alone or in association with a grid pre-cleaner or a trash catcher.
- The grain, introduced into the device by feed hopper G, emerges as a uniform sheet by means of an adjustable shutter.
- A current of air blows through the sheet removing lightweight products.
- A distributor adjusted by a thumb-wheel ensures straw products are regularly removed.
- The heaviest products fall into a holding chamber and are removed by screw M while the others are ejected.
- These pre-cleaners are compact and integrate very easily into reception systems without limiting their flow rate: 70 to 500 tonnes per hour.
