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Dust & Powder Filter Cloth Filtering Effect
Nov 02, 2017

Dust & Powder Filter Cloth Filtering effect

Dust filter cloth is a dry dust removal device that is suitable for capturing fine, dry non-fibrous dust. The filter bag is made of textile filter cloth or non-woven felt, and the dusty gas is filtered by the filtering effect of the fiber fabric. When the dust-laden gas enters the dust filter cloth, the particles are larger and the dust is larger than the dust Down, fall into the ash bucket, containing the smaller dust of the gas through the filter, the dust is blocked, so that the gas is purified. Generally the new filter dust removal efficiency is not high enough. Filter material used for some time, due to sieve, collision, retention, diffusion, static and other effects, the bag surface accumulation of a layer of dust, this layer of dust called the first layer, in the subsequent movement of the process, the primary Filter the main filter layer, relying on the role of the primary layer, the larger the filter can also get a higher filter efficiency. With the accumulation of dust on the surface of the filter, the efficiency and resistance of the precipitator are correspondingly increased, when the pressure difference on both sides of the filter, it will have some attached to the filter on the fine dust particles squeezed in the past, So that the efficiency of the precipitator. In addition, the excessive resistance of the dust collector will significantly reduce the air volume of the dust removal system. Therefore, the resistance of the precipitator to a certain value, it is necessary to timely cleaning. Cleaning can not damage the primary layer, so as to avoid the decline in efficiency. Dust filter cloth structure mainly by the upper box, the middle of the box, the lower box (ash bucket), cleaning system and ash discharge agencies and other components. Dust filter cloth performance is good or bad, in addition to the correct choice of filter bag material, the cleaning system on the dust filter cloth plays a decisive role. To this end, cleaning method is to distinguish one of the characteristics of dust filter cloth, dust filter cloth is also an important part of the operation. First, the filter bag installation process of common problems

1, the use of pockets with defects

Bag cage is a kind of external filter bag in the filter and cleaning conditions to maintain a certain shape under the conditions of the installation of accessories, is the filter bag "bones", its quality is directly related to the filter bag filter, cleaning effect and Service life. Filter bag installation using poor welding, vertical burr, deformation and other defects with the bag cage can easily damage the bag.

2, flower plate aperture and pocket inconsistent

As most of the current filter round bag with elastic expansion ring and the plate fixed seal, flower plate aperture and the mouth is inconsistent, likely to cause the following problems:

(1) flower plate aperture is too small, the installation is difficult, the installation staff in order to install in place with heavy objects hit elastic expansion ring bag damage.

(2) flower plate hole is too large, filter bag and bag cage will cause "out of pocket" phenomenon, and pocket shortcomings, bag edge easy to leaking ash, dust removal efficiency is not guaranteed.

3, non-standard filter bag installation

When the filter bag is installed, the organization does not organize the staff to carry out the training of the co-ordinator, nor does it monitor the quality of the bag installation in time. The installation personnel often use the non-standard installation method.


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