Dredging device for hydraulic engineering construction

The utility model discloses a desilting device for hydraulic engineering construction, which comprises a fixing frame, the fixing frame is of a U-shaped structure, limiting grooves are formed in the opposite ends of the fixing frame, a lifting mechanism is installed between the two limiting grooves in a sliding mode, and a water pump and a processing box are fixedly installed at the upper end of the lifting mechanism. The output end of the water pump communicates with the interior of the treatment box through a blow-off pipe, a drainage pipe is fixedly installed on the lower portion of one end of the treatment box, a crushing mechanism is connected to the middle of the upper end of the lifting mechanism in a penetrating mode, and the middle of the upper end of the crushing mechanism is movably connected with the input end of the water pump through the blow-off pipe; universal wheels are fixedly installed at the four corners of the lower end of the lifting mechanism, and a plurality of control buttons are fixe