MC-60 pulse induced draft dust dusty gas from the inlet into the dust the cabinets, the role of small dust particles due to a variety of effects cartridge, the cartridge wall is entrapment. Purified gas through the exhaust outlet cartridge box. With the use of time of growth, the dust cartridge surface adsorption increased, decreased permeability of the filter cartridge, so that dust resistance increasing. To ensure dust resistance control within a limited range, signaled by the pulse controller, sequential open electromagnetic pulse valve, compressed air within the package by the spray jet to the corresponding hole injection tube venturi tube (called once the wind), and at high air flow through the venturi tube several times in a wind-induced ambient air (called secondary air) into the cartridge, resulting in the rapid expansion of inter-cartridge, due to the impact of the role of reverse pulse flow soon disappeared, and a sharp contraction of the filter cartridge, such that the product dust attached to the outer wall of the cartridge is cleared. Dust fall into the gray base.