Dredging device and dredging method for hydraulic engineering

Abstract

The invention belongs to the technical field of hydraulic engineering desilting equipment, particularly discloses a desilting device for hydraulic engineering and a desilting method, and solves the technical problems that traditional desilting equipment is poor in blocking effect, and secondary diffusion of silt is easy. The device comprises a base body, a suction part, a crushing part and a blocking part, the base body is of a cylindrical structure, the suction part is communicated with the base body and external negative pressure equipment, the crushing end of the crushing part is arranged at the opening end of the base body, and sludge can be cut and stirred to form sludge slurry which is sucked and discharged by the suction part; the blocking piece comprises a base rotationally arranged on the outer wall of the base body, a flexible blocking cover and a first balance weight piece, when the base rotates, the first balance weight piece conducts centrifugal motion to enable the blocking cover to be unfolded to form a closed area, the blocking piece can adapt to the uneven sludge face to be tightly attached, and sludge diffusion is effectively blocked. The device is compact in structure, convenient to operate, high in desilting efficiency, good in environmental friendliness and suitable for desilting operation of various water conservancy facilities such as river channels, reservoirs and ecological sensitive water systems.

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