| 摘要 |
Means for closing 11 the mouth of the hopper 2 yield to the weight of the load, forming interruptions in continuity for the passage thereof, being stressed by counterweights towards the closure position, constituting, with the hopper 2, an enclosure where the discharge dust is retained. The enclosure is kept in communication with chambers 4, filters 9 and aspirators 8. Under the discharge mouth of the hopper there are flanks 4 which form a tunnel of adjustable length, in which the vehicle receiving the load is parked. In said tunnel there are suction hoods 16 in communication with conduits 17 and aspirators 18, towards the chambers 4. The improvements are applicable to the capturing of the dust generated during operations for unloading pulverulent materials from a moored boat. <IMAGE>
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