This dust collector is a large-scale dust removal equipment with high air volume, good dust cleaning effect, high dust removal efficiency, reliable operation, easy maintenance, and small footprint. Applied in industries such as metallurgy, power, chemical, and building materials. It mainly consists of ash hopper, filter chamber, clean air chamber, bracket, lifting valve, and blowing and cleaning device. During operation, dusty gas enters the ash hopper through the air duct. Large particles of dust directly fall into the bottom of the ash hopper, while smaller particles of dust enter the filter chamber and are trapped on the outer surface of the filter bag. The purified flue gas enters the bag and passes through the bag mouth and clean air chamber before entering the air outlet and being discharged through the exhaust outlet.