It is mainly composed of upper box, middle box, ash bucket, ash discharging device, blowing device and control instrument. The dusty flue gas enters the lower part of the middle tank, and the windshield forms a pre-separation chamber, and the large particle dust falls into the ash bucket due to the inertia force. The flue gas enters the bag along the windshield and is discharged through the air outlet through the bag mouth and the upper box. When the dust on the surface of the bag increases continuously, causing the resistance of the device to rise to the set value, the micro differential pressure controller has a signal output, and the controller sends a signal to make the blowing system work. At this time, the compressed air is ejected from the bag sequence through the nozzles on the pulse valve and the blow pipe into the bag, and the dust attached to the bag falls into the hopper due to the acceleration generated by the bag expansion and the reverse flow.
