Release time:

2022-07-18

In the industrial dust collector, the industrial process of the bag filter is that when the dust-containing gas passes through the filter cloth, the voids between the filter cloth fibers or the voids adsorbed on the surface of the filter cloth are separated by dust larger than the diameter of the voids, which is called the sieving effect. For the new filter cloth, due to the large gap between the fibers, this effect is not obvious, and the dust removal efficiency is also low. Only after a certain period of use, a certain thickness of dust layer is established on the surface of the filter bag, and the screening effect is also significant. After cleaning, due to the surface of the filter bag and a certain amount of dust remains inside, it can still maintain a good dust removal efficiency. For needle felt or fleece itself constitutes a thick porous filter layer, can be more fully play the role of screening, do not rely entirely on the dust layer to maintain a high dust removal efficiency. When the dust-containing gas passes through the filter cloth fiber, the dust larger than 1um will still maintain a linear motion due to the effect of inertia and hit the fiber and be trapped. The larger the diameter of the dust particles, the greater the inertial effect. The higher the filtering air speed, the greater the inertial effect, but the air speed is too high, the amount of air passing through the filter cloth also increases, and the air flow will break through the weak part of the filter cloth, resulting in low dust removal efficiency. The higher the gas velocity, the more serious the penetration phenomenon.