Baghouse commonly known as a highly efficient bag filter is a dry dust collector, which uses organic fiber or inorganic fiber braid bag filter elements will filter out solid particles in dust gas dust removal equipment, used to trap The non-adhesive, non-fibrous industrial dust. The principle of the bag filter dust to bypass the filter cloth fiber, the force of inertia and the fiber collision filtering. Fine dust particles (particle size of 1um or smaller) by the impact of the gas molecules (Brownian motion) changing the direction of motion, due to the gap between the fiber less than the free path of the Brownian motion of gas molecules, dust contact with the fiber collision be separated. The advantage is that the dust removal efficiency for the 2um above the dust, its efficiency up to 99.9%, and lower cost, simple management and easy maintenance. Therefore, it is in the dust removal device, the performance of one kind of dust, to meet the current Environmental Protection Act, "stringent requirements, reliable dust collector.