LOW PRESSURE LOSS DUST COLLECTORS

摘要

Highly efficient particulate collectors, such as for dust and street debris collected by a mobile street cleaning vehicle, with very low pressure loss are disclosed. One embodiment uses a specially contoured passage to separate the solid particles from particulate-laden gas stream by rapid directional change at a throat region. By using the Venturi effect at the accelerating zone communicating with a gas return channel from the particulate retaining chamber, a small amount of the gas will be recirculated from the deposit zone to help move and retain the separated particles in a confined collection receptacle.

主权项

1. A particulate separation apparatus comprising:
a conduit structure having an inlet passage for conveying a particulate-laden gas stream, the inlet passage comprising:
at least one inlet passage wall;an upstream end; anda downstream end, wherein the downstream end comprises an outlet channel and a particulate-collection channel; and a gap formed in the at least one inlet passage wall, wherein the gap is located between the upstream end and the downstream end, and wherein the gap is in fluid connection with the particulate-collection channel such that a recirculating flow may recirculate from the particulate-collection channel into the inlet passage via the gap.