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Understand the working principle of bag filter

Dust removal equipment includes single bag dust collector, bellows bag dust collector, long bag low pressure bag dust collector, reverse blow bag dust collector, etc. The processing area of ​​the dust removal equipment varies. Therefore, the price of dust removal equipment varies.

Faced with so many types of dust collectors, how do we choose? Different types of dust collectors have different prices. Before choosing the price, we need to remove the working principle of the dust collector.

Air box cloth bag dust collector

According to the filtering principle, use organic fiber or inorganic fiber filter cloth to filter the dust in the gas. For the new filter cloth, due to the large gap between the fibers, this effect is not clear, and the dust removal efficiency is also low.

Pulse bag dust collector

Since the advent of the 20 century 50, it has been widely used and continuously improved, and has made great progress in purifying dusty gases. Due to the novel cleaning technology, the gas distribution rate has been greatly improved. It has the characteristics of large air volume, small footprint, high purification efficiency, stable operation, simple structure, and small maintenance. Dust removal efficiency is very high. It is a relatively mature and perfect dust removal equipment.

When the dust-containing gas passes through the filter cloth, the gap between the fibers of the filter cloth or the gap between the dust adsorbed on the surface of the filter cloth separates the dust larger than the diameter of the gap, which is called the screening effect. For the new filter cloth, due to the large gap between the fibers, this effect is not clear, and the dust removal efficiency is also low. After a certain period of time, a certain thickness of dust layer is formed on the surface of the filter bag. After dust removal, a small amount of dust remains on the surface and inside of the filter bag, which can still maintain good dust removal efficiency. For needle-punched felt or fluffy filter cloth, because felt or fluffy filter cloth itself constitutes a thick porous filter layer, it can play a filtering function without relying on the dust layer to maintain high dust removal efficiency.