Gravel filtering device for water conservancy project

The invention relates to the technical field of gravel filtering, and discloses a gravel filtering device for hydraulic engineering, which comprises a device main body, the device main body comprises a main cylinder body, a sealing cover arranged at the top of the main cylinder body, a water inlet arranged at one side of the top of the device main body, and a water outlet arranged at one side of the bottom of the device main body; a filter part is arranged in the cavity of the device body. Kinetic energy of water introduced from the water inlet is utilized to drive the water bucket type rotor to rotate, so that the rotating disc and the main shaft rod synchronously rotate, unfiltered water flows to the coarse filter screen through the flow guide groove, the main shaft rod drives the coarse filter screen to rotate, and the water is thrown into the fine filter screen through the coarse filter holes by utilizing centrifugal force; large-diameter gravels contained in water are filtered in the coarse filter screen