Dredging device for water conservancy construction

The utility model discloses a desilting device for water conservancy construction, which comprises a desilting device main body, the top end of the desilting device main body is fixedly provided with a motor through a bolt, the section of the desilting device main body is fixedly provided with a base through a bolt, and the lower surface of the base is provided with a protective net cover. A mounting disc is arranged on the outer surface of the desilting device main body, and a mounting opening is formed in one side of the end part of the desilting device main body; by designing a clamping plate at the edge of the protective net cover and designing a clamping groove at the edge of the base, the clamping plate can be located in the clamping groove, so that the protective net cover is closed in the base, and the protective net cover is rotated to clamp the end part of the clamping plate in the clamping groove; and after clamping, a sliding plate slides in a groove under the action of elastic deformation of a sp