| 摘要 |
Apparatus for removing sludge from an underwater deposit comprises a blade 5 having a cutting edge that points forwards and a blade surface (32, Fig 4) to the rear of the cutting edge and that faces the interior 28 of a housing 2. Nozzles 10 are positioned and oriented to direct jets 14 of water onto the blade surface (32) so as to fluidize sludge that has been cut by the blade 5. Jets 14 have a component of motion in the rearward direction relative to the blade surface (32), whereby the fluidized sludge is effectively contained within the housing 2 and high collection rates can be achieved. The apparatus can be adapted for horizontal use over the surface of a sludge deposit or for movement in any direction through a bulk sludge deposit. An associated methods of use is also described. Other components include a row of cutting discs 4, second jets 16, jet pump 18, outlet 20, walls 22, 23, 24, nozzles 12, manifold 8, axle 39, wheels 38 and port 30. |
