Filtered through a period of time, the outer surface of the dust filter cartridge will be piled up, cartridge resistance increases will affect the amount of wind system, you need to clean up the system by cleaning accumulated dust attached to the cartridge surface, achieve cartridge regeneration. Pulse cleaning dust by the timing controller in accordance with pre-set time for a pulsed electromagnetic valve controlled to open, the high pressure air within the air bag will instantly enter the center of the cartridge, to remain in the filter surface dust purged. Dust in the air flow under the action of gravity and driving, falling ash collection bucket, to achieve re-use cartridge.