Ex MDC and PDC common type bag filter bag filter is the latest development of an efficient dust collector, the device developed in absorbing foreign advanced experience of similar equipment based on the combination of domestic circumstances and complete. MDC explosion-proof vacuum bag filter used to work for the coal mill dust collection system. MDC explosion-proof anti-static filter baghouse, the body with explosion-proof structure, and a pressure relief device, with explosion-proof performance for coal equipment systems and flammable, explosive dust collection components of the device less mechanical action maintenance workload is small, easy to change bags, the use of pulsating sub-room cleaning, dust collection efficiency, long-term, efficient operation, dust collection efficiency of 99.8%. PDC addition to a common type bag filter proof performance, has the same advantages. Can be widely used in cement, power, metallurgy, chemical industry, etc. exhaust collecting. Such as cement mill, raw mill, mining crushing, material hoist, transportation and other dust collecting points can be used.