FLOATING DREDGER Russian patent published in 1994 - IPC

FIELD: construction industry. SUBSTANCE: floating dredger has hull 1, suction dredge 2 with suction 3 and pressure 4 branch pipes installed in it, hydraulic transportation system composed of pressure pipe-line 14 and suction pipe 6 with tine 35. Hydraulic transportation system is additionally provided with water intake branch pipe 11, by-pass pipe 15 connecting suction pipe 6 with pressure pipe-line 14 and supplementary pipe link 16 coupling by-pass pipe 15 with pressure pipe-line 14. Suction pipe has excessive bend placed with elevation above suction dredge. By-pass pipe-line 15 is made curvilinear by outline of cycloidal curve of branchistochrone. Supplementary pipe link 16 is laid along by-pass 15 and is coupled to it by means of waterflow branch pipes 18-21. Shut-off fixtures 24-34 are included into system. Throw-over sheet with meshes within size of flow section of suction dredge is installed at point of connection of by-pass pipe 15 with section 7 of suction pipe 6. EFFECT: increased efficiency of mining of soils in underwater faces. 4 dwg