Water stop valve suitable for water conservancy project and controllable in flow velocity

The utility model discloses a water stop valve suitable for hydraulic engineering and controllable in flow velocity, and relates to the technical field of water stop valves, in particular to a water stop valve suitable for hydraulic engineering and controllable in flow velocity, which comprises a valve body, the top of the valve body is fixedly connected with an outer protective shell, one end of the valve body is fixedly connected with an output end, and the other end of the valve body is fixedly connected with an inner protective shell. According to the water stop valve, by arranging the anti-rust device and installing the waterproof box at the connecting position of the flange, it is avoided that when the flange is exposed in the air, the flange is in cloudy and rainy weather, the surface of the flange is rusted when meeting water, and consequently mounting and dismounting are inconvenient, meanwhile, certain pollution is avoided, and by installing the filtering device, the water stop valve is convenient t