Bipolar charge coagulation device for dust particles

The invention discloses a bipolar charge coagulation device for dust particles. The device comprises a clockwise cyclone charger and an anticlockwise cyclone charger; the clockwise cyclone charger and the anticlockwise cyclone charger respectively charge air currents containing the dust particles; thick and fine particles of the dust particles charged with the same charges are separated by using a cyclone separation effect; and thick and fine particles charged with different charges are mixed to realize selective mixing of the particles with different particle sizes so as to reinforce a coagulation effect between bipolar charge particles. The device has the advantages of simplicity, reliability and effectiveness.