A bin vent is a filtering device without an inlet or cone section. The bin vents function is to clean aspirated air from a conveyor or bin enclosure.
A bin vent is mounted above the aspirated piece of equipment, air and some dust are pulled up into the bin vent with the assist from a fan located after the bin vent. The bin vent uses either bags or cartridges for the filter media as air from the plenum can be dusty.
The filter media captures the dust on the outside of the filter media, a compressed air cleaning system built into the bin vent blows the dust off the filter media which allows dust to fall back into the aspirated piece of equipment.