The obvious advantages of film dust bag are the following:
1. Under normal circumstances, the dust filter bag used in industrial filtration is deep filtration, which can effectively filter through the formation of a dust layer on the surface of the dust bag. From the start of filtration to the formation of effective filtration time is relatively long, accounting for about 10% of the entire filtration process, the resistance is relatively large and the filtration efficiency is very low, retention is incomplete, the pressure at the time of filtration and backflushing is also relatively high. Grey is frequent, energy consumption is high, service life is not long, and the equipment covers a large area. The use of film dust bag, dust can not enter the bag, close to the surface of the filter, regardless of the thickness of dust, almost all are blocked on the surface of the bag, no primary filtration period, is effective filtering, nearly 100% of the time in the filter state.
2. Long service life. The film-covered filter material can exert superior performance regardless of the cleaning mechanism used. It is a filter material that fully functions as a filter for the function of the dust-removal equipment because of its low cost. Film-coated filter is a kind of soft, non-strengthened tissue structure, with sufficient mechanical strength, combined with excellent deashing, reducing the dust-removing intensity, and can be used for a long time under a low and stable pressure loss. Filter bag life.
3. Low pressure, high flux work continuously. The traditional deep-filtering filter material, once put into use, dust penetration, the establishment of a dust layer, the permeability will drop rapidly, filtration, the internal accumulation of dust caused by clogging, thereby increasing the dust removal equipment resistance. Film-covered dust bag with fine pore size and its stickiness, so that the dust penetration rate is almost zero, when put into use to provide better filtration efficiency, when the deposited material deposited on the surface of the filter media reaches a certain thickness, it will It is automatically detached and easy to remove dust, so that the filtration pressure is always kept at a low level. The air flow is always maintained at a high level and it can work continuously.
4. Easy to remove dust. Ren Bao’s operating pressure loss of a filter material directly depends on the amount of dust remaining on the surface of the filter material or left on the filter material after cleaning, and the duration of dust removal (with only a few seconds for the film dust removal bag) is extremely advantageous. The dust-removing characteristics can completely remove the dust layer in each cleaning process. The filter material will not cause blockage inside, and will not change the porosity and mass density, and can always maintain the low-pressure loss.
It should be noted that although the film dust removal bag has various advantages, it is not suitable for filtering exhaust gas containing dust and high abrasion, because the dust with sharp corners will pierce the film and lose the effect of surface filtration.