Sediment separation device for water conservancy construction

The utility model relates to the technical field of water conservancy construction, and discloses a sediment separating device for water conservancy construction, one side of a screening box is provided with a drawing groove, a connecting frame is connected in the drawing groove in a sliding mode, the inner side of the connecting frame is fixedly connected with a screening net, and one side, close to the outside of the screening box, of the connecting frame is fixedly connected with a pull rod. According to the device, the driving motor is arranged, the output end of the driving motor rotates to drive the rotating column to rotate, the rotating column drives the first sliding groove to rotate, the first sliding groove rotates to drive the swing rod to swing, the swing rod drives the second sliding block to move back and forth along the second sliding groove, the second springs on the two sides are used for buffering, and the second sliding block drives the supporting block to move back and forth along the gro