WAM WAM pulse pulse bag filter bag host host flue dust along in the dust suction the airway forward part of the dust particles by gravity sedimentation in the dust hopper; when another part of the flue gas through the filter bag, dust was retention in the bag, out of the exhaust gas through the induced draft fan after purification, so as to set in addition to the smoke, the purification of gases and atmospheric environment protection purposes. In addition, negative blowback bag filter purification mechanism: The Boiler Fan composition using negative pressure filter systems, gas flow negative. Bag filter has inertial impaction, sieving (contact retention), cut fishing, gathering and electrostatic precipitator and other effects, and can coarse (≥10μm diameter), small (<5μm particle size most harmful to humans) particles smoke and suspended dust can be collected efficiently, which is its outstanding advantages. Bag cleaning, dust after running for some time, the bag surface adhesion and aggregation play a thickness of soot, by controlling the purge valve, remove the bag surface soot. Bag filter vacuum draft fan located in the area, so that the dust removal system work in the vacuum state, which will help to extend the life of the induced draft fan and avoid soot wear. In order to ensure the bag is working properly, and also set the bypass valve designed for boiler flue overhaul Ovens and use more fuel fumes containing influence on the bag when the ignition temporarily opened to use. Vacuum bag filter cleaning is simple, small footprint (30m2 or less), may need to be flexible design layout according to the production site. Vacuum cleaning bag filter dust and gas purification strong ability to effectively control pollution, especially after the purification of dust emissions were significantly less than the national emission standards can be applied to small and medium sized industrial boilers, dust removal efficiency of up to 98% the above. Vacuum cleaning bag filter produce lower operating costs, energy consumption is low compared with similar technology. Vacuum cleaning bag filter can effectively capture ≥10μm diameter and <5μm particle soot harm to the human body and suspended dust, which purify the atmosphere, plays a special role in the protection of human health. Indoor dust alias structure, indoor dust collector, pulse induced air dust collector, pulse cleaning dust collector and so on. WAM host pulse bag filter is mainly used for indoor dust host. One, WAM host pulse bag filter it by low-power fan, barrel, filters, bags, pulse controller, electromagnetic pulse valve, injection system components, cylinders arranged on the barrel body, and arranged a number of pulse valve and injection system. Two, WAM host pulse bag filter works produced by the induced draft fan working in the filter and external pressure, so that the outside of the particulate filter dust gang, led by the fan clean air, including dust, gas provided by one or two air intake, filter dust Use pulse cleaning system type blow, due to pulse controller and solenoid valve. Intermittent injection for the filter to continuously remove dust attached to the filter surface. Three, WAM host pulse bag filter to use. 1, adjust the pulse jet control device, locking pulse interval and pulse width, and complete all the electromagnetic pulse valve drive pulse cycle and cycle interval to ensure dust running resistance within the set range, the timing of the implementation of the ESP dust cleared . 2, every 2-3 months will remove the filter, dry air in the filter dust collection blowback blowing, cleaning. WAM host pulse bag filter dust and 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.