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Bag dust removal
Bag dust removal
Bag dust collector is a dry type dust removal device, which is suitable for collecting small, dry non-fibrous dust. The filter bag is made of woven filter cloth or non-woven felt, and the dust-containing gas is filtered by the filtering effect of the fiber fabric. When the dust-containing gas enters the bag filter, the particles with large and specific gravity settle due to gravity. When it comes down, it falls into the ash hopper, and the gas containing the finer dust passes through; when the filter material is filtered, the dust is trapped to make the gas purified.
Dust removal efficiency of new filter media is generally not high enough. After the filter material is used for a period of time, due to the effects of sieving, collision, retention, diffusion, static electricity, etc., a layer of dust has accumulated on the surface of the filter bag. This layer of dust is called the primary layer. The main filter layer of the filter material depends on the role of the primary layer, and the filter material with a larger mesh can also obtain higher filtration efficiency. With the accumulation of dust on the surface of the filter material, the efficiency and resistance of the dust collector will increase accordingly. When the pressure difference between the two sides of the filter material is large, some fine dust particles that have adhered to the filter material will be squeezed out. To reduce the efficiency of the dust collector. In addition, the high resistance of the dust collector will significantly reduce the air volume of the dust removal system. Therefore, when the resistance of the dust collector reaches a certain value, it should be cleaned in time. The initial layer cannot be destroyed during dust removal, so as not to reduce efficiency.
The bag dust collector structure is mainly composed of the upper box, the middle box, the lower box (ash hopper), the ash cleaning system and the ash discharge mechanism. The performance of the bag filter is good or bad. In addition to the correct selection of filter bag materials, the ash cleaning system plays a decisive role in the bag filter. For this reason, the ash cleaning method is one of the characteristics of the zone bag filter, and it is also an important part of the operation of the bag filter.
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