Mechanical rapping class baghouse is the use of mechanical devices (including manual, electromagnetic vibration and pneumatic) to enable the bag to bag filter cleaning vibration. Vibration frequency from several times per second to hundreds of times. In addition to the small dust removal unit, such precipitators, mostly in the form of the circle within the filter bags. Which is characterized by a less kinetic energy imposed on the dust layer, more frequently, requiring the filter thin and smooth, soft texture, pass the vibration wave in all the filter surface to create enough vibration strike force. Usually chosen by the system of chemical fiber short fiber satin weave or twill fabric, thickness 0.3-0.7mm, the mass per unit area 300-350g/m2. Selected filter the speed 0.6-1.2m/min, small units may be appropriate to 1.5-2.0m/min is recommended