Patent ID: 9604800
Date: 2017-03-28
CPC Classifications: B65G

Claim:
1. A dust control apparatus for use in an apparatus for rotary dumping of rail cars, comprising: a backside hood having a primary air intake that removes contaminated air from a pit into which the rail cars are dumped, the backside hood being operably coupled in fluid communication with exhaust fans located exterior to the pit; a diverter, overlying the backside hood, the diverter having a concave curved upper surface; and at least one secondary air intake positioned to pass through the upper surface of the diverter into the backside hood, the secondary air intake being located approximately where pressure in the backside hood remains neutral or negative relative to a pressure above the diverter even when downwardly rushing material dumped from a railcar into the pit causes a transient increase in air pressure in a lower portion of the backside hood.