Maintenance-free water conservancy project gate

The invention discloses a maintenance-free water conservancy project gate which comprises a gate support, an upper arch-shaped frame, a lower arch-shaped frame and a gate body, the upper arch-shaped frame and the lower arch-shaped frame are installed at the top and the bottom of the gate support respectively, the gate body is arranged in the gate support and is in an arch shape, and a lifting mechanism is installed on the upper surface of the gate body. A filtering mechanism is fixedly installed on one side of the gate support, a buffering assembly is arranged in the side face support, and a waste discharging mechanism is installed on one side of the fixing column. According to the maintenance-free water conservancy project gate, the gate body is arranged to be in an arch shape, the impact resistance is improved, the service life of the gate is prolonged, water leakage is not likely to happen, manual garbage disposal is not needed through the arrangement of a filtering mechanism and a waste discharging mechan