Dredging device for water conservancy project

The desilting device for the water conservancy project comprises a hollow cylinder, a round through hole is formed in the center of the front surface of the hollow cylinder, a groove opening is formed in the inner side of the round through hole, a drawing structure is arranged in the hollow cylinder, a rubber piston is arranged at the front end of the drawing structure, and the rubber piston is arranged in the hollow cylinder. A long rod handle is fixed to the outer side of the hollow cylinder, the drawing structure comprises a hydraulic telescopic rod, an L-shaped pull rod, a two-way hollow pipe, a rubber sealing ring, a first annular groove, a single-way hollow pipe, a first fixing ring, a second fixing ring and an exhaust through hole, and the rear end of the hydraulic telescopic rod is fixed to the rear surface of the interior of the hollow cylinder. According to the desilting device for the water conservancy project, the drawing structure is matched with the rubber piston, so that a pipeline blocked by s