Haze removing system with magnetic fluid self-replacing filter element in city pipeline corridor

The invention discloses a haze removing system with a magnetic fluid self-replacing filter element in a city pipeline corridor. The haze removing system with the magnetic fluid self-replacing filter element in the city pipeline corridor comprises an underground haze removing well, a well cover, an upper fan, a lower fan, a water pump, a spraying device and a power supply unit, wherein an air inlet hole is formed in the well cover, and the well cover is arranged at the haze removing well; the upper fan is arranged under the well cover, and the air inlet of the upper fan is formed in the lower surface of the well cover; the air outlet of the upper fan is formed inside the haze removing well, and the air inlet of the lower fan is formed inside the haze removing well; the air outlet of the lower fan is communicated with an urban rainwater pipeline, and the spraying device is arranged above the haze removing well; the water pump is arranged in the rainwater pipeline and connected with the spraying device through a