Hydraulic engineering desilting device

The utility model discloses a hydraulic engineering desilting device which comprises a filter box, a sewage inlet is formed in the upper portion of the filter box, a water outlet is formed in the bottom of the filter box, and a box door capable of being opened is arranged on one side of the filter box. The suction pipe is connected with the sewage inlet in the filter box, and a suction pump is arranged on the suction pipe; the first filter plate is obliquely arranged in the filter box, the first filter plate is located below the sewage inlet, and a plurality of first sieve holes are formed in the first filter plate; the second filter plate is obliquely arranged in the filter box, the second filter plate is located below the first filter plate, a plurality of second screen holes are formed in the second filter plate, and the hole diameter of the second screen holes is smaller than that of the first screen holes. According to the desilting device for the water conservancy project, at least two stages of filter