Industrial flue gas dust removal device

The invention relates to an industrial flue gas dust removal device. The industrial flue gas dust removal device comprises a gravitational dust removal unit, an electrostatic dust removal unit and a cloth bag dust removal unit. An inlet of the gravitational dust removal unit is connected with a flue gas pipeline. An outlet of the gravitational dust removal unit is connected to the electrostatic dust removal unit through a first pipeline. An outlet of the electrostatic dust removal unit is connected to the cloth bag dust removal unit through a second pipeline. An outlet of the cloth bag dust removal unit is connected with an exhaust fan through a third pipeline. The gravitational dust removal unit comprises a gravitational elbow. The electrostatic dust removal unit comprises an electrostatic dust removal chamber and a smoke dust sensor. Electrostatic dust removal electrodes are arranged in the electrostatic dust removal chamber. The smoke dust sensor is arranged in the first pipeline. The cloth bag dust removal unit comprises an air distributing chamber. A plurality of rotating shafts are arranged in the air distributing chamber. One end of each rotating shaft is fixed to a middle shaft, and the other end of each rotating shaft is provided with a dust-removing cloth bag. The middle shaft is fixed to an output shaft of a driving motor. The smoke dust sensor, the electrostatic dust removal electrodes and the driving motor are connected to a controller.