E - Fixed Constructions – 02 – F
Patent
E - Fixed Constructions
02
F
E02F 5/02 (2006.01) B01D 45/06 (2006.01) B01D 46/42 (2006.01) B01D 50/00 (2006.01) E02F 3/88 (2006.01) E02F 3/92 (2006.01) E02F 7/06 (2006.01)
Patent
CA 2116506
The invention relates to a dredger for the planned taking up of suction material, particularly for removing soil from underground pipes. The dredger has a pneumatic elephant trunk for taking up the suction material and which issues into a storage tank for the sucked up material and to which is connected an exhaust fan. In the storage tank the section material is separated from the suction air flag and is subsequently passed through a filter means positioned between the elephant trunk opening and the exhaust fan. In order to ensure a good separation on the part of the filter means for a long period of time, said filter means is formed by a coarse filter and a fine filter connected to the latter. The coarse filter is formed by a labyrinth or cascade-like flow channel, which is bounded by reciprocally displaced partitions and whose flaw cross-section increases in the flow direction. On the tank bottom can be provided a conveying means by means of which the suction material separated from the air flow can be removed continuously or at intervals from the storage tank.
Gowling Lafleur Henderson Llp
Vmb Vesta Maschinenbau Gmbh & Co. Kg
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