Hydraulic engineering desilting device

The utility model relates to a hydraulic engineering desilting device, which is characterized in that a support column extending left and right is rotatably mounted on a support, a plurality of sleeves are uniformly and fixedly mounted on the peripheral surface of the left end of the support column at intervals, adjusting columns are movably mounted in the sleeves, and scrapers positioned on the outer sides of the sleeves are fixedly mounted at one ends, far away from the support column, of the adjusting columns; a movable column is installed in the channel in a left-right sliding mode, and a connecting rod is hinged between the first connecting block and the second connecting block. The adjusting mechanism drives the movable column to slide rightwards, the movable column drives the scrapers to move towards the side close to the supporting column through the connecting rods, and therefore the radius of a circle defined by the multiple scrapers is reduced so that the left end of the adjusting column and the mu