Dust bag filter mechanism – – dust fiber filter mechanism

Thirdly, the filtering mechanism of the fiber which retains the dust.

The design pore diameter of the fiber layer filter material is 20 ~ 60 microns, which is difficult to capture fine powder. The initial filtration efficiency of the laboratory test is only 50 ~ 80%, which obviously cannot meet the industrial dust removal requirements.

As a bag type dust collector of high-efficiency dust removal equipment, the actual filtering function of the fiber layer filter material is to rely on the primary powder layer adhered to the surface of the fiber layer. After commissioning the bag filter, with the filtering process, the powder layer is derived from the clean fiber layer of the filter as the “core “.The dust layer initially established is unstable and easy to loosen and fall off after cleaning, but there are always some dust particles left on the surface of the fiber layer. After several cleaning leaks, the stable powder layer that will not peel off after cleaning gradually forms. called a layer of dust. The clean fiber layer after the primary powder layer is established is called the dust-retaining fiber layer. The primary powder layer is a porous structure composed of fine dust particles, which have been attached to the surface fibers of the filter material. Compared to the clean fiber layer, the dust-retaining fiber layer has a smaller pore size, curved channels, and reduced porosity. From the analysis of the filtration mechanism, even for dust particles with a particle size of less than 1 micron, the filtration efficiency can reach 99.9%.