Aspirators are suited for the removal of dust and light impurities from grain. The grain passes through an upwards moving air stream in the aspirator. The air stream picks up dust and light impurities, and gravity allows the grain to fall down into the bottom outlet of the aspirator.
The dust and light impurities follow the air stream through the blower and further on into a pipeline to the desired discharge point.
Fan speed and air flow are controlled by a VFD (Variable Frequency Drive) to allow for adjustments depending on weather conditions, grain type and desired capacity.
The dust and light impurities can be conveyed to a fabric filter/baghouse and discharged into a dust room.