1. Mechanical vibration type bag filter is the use of mechanical devices, of the bag to produce vibration cleaning bag filter. Such dust is characterized by kinetic energy applied to the layer of dust less and more frequently, therefore, requires filter thin and smooth, soft texture, is conducive to the transmission of vibration wave in the filter surface to form a sufficient rapping force. Suitable synthetic satin or twill fabric with a thickness of 0.3-0 .7, a basis weight of 300-350 g / m², filtration speed 0.6-1.0 m / min, for small units can be increased to 1.0-1.5 m / min. 2. The sub-category room cleaning bag filter compartment structure, the use of the valve chamber by switching to form the reverse flow cleaning, or swelling of the bag deflated bag filter cleaning. It has two state and three-state points, the number of cleaning 3-5 times / h, cleaning power from the filter body allowable pressure, special occasions only comes with RABH power. A low kinetic energy cleaning type, media should use soft, easily deformed and dimensionally stable thin filter, such as filter 729,208. Filtration rate and mechanical vibration appreciable. 3. The vibration cleaning bag filter with class refers to both vibration and reverse gas flow dual action cleaning bag filter, vibration, dust cake so loose, reverse air flow so that dust out, two ways of mutual cooperation, to improve the cleaning effect, especially for the fine particles of dust sticky. Filter selection principles such precipitator substantially sub-room cleaning dust the same class, in order to use satin or twill woven filter based. With the improvement of the level of technology and product quality needle felt, the trend is to strengthen the choice of fabric, dimensionally stable thin needle felt. 4. The nozzle cleaning type bag filter is the use of fan power to do cleaning dust, dust filter when state by moving the nozzle to turn the bag blowing, forming a strong reverse flow. For cleaning bag filter bag, it is a medium kinetic energy cleaning type. In the bag filter cleaning nozzle has a rotary cleaning, gas ring back and forth several forms of blowback blowback slide and so on. 5. The pulse jet bag house class is powered by compressed air, the use of pulse jet institutions in the instant release of the compressed air flow and the secondary air injection induced multiple high-speed bag, bag making rapid expansion. Rely on shock and vibration and direction of airflow cleaning bag filter, a high kinetic energy cleaning type, usually circular outer filter bag or bags with flat frame.