Portable welding smoke purifier most counter blowing dust work have three process

Soot cleaning after the sedimentation process is to close the regulator mobile dust collector, most have three counter blowing dust work process, namely, filtering, ash removal and the subsidence process. In the process of filtering dust hopper, gas from the blast pipe to filter the large particles of dust in gravity drop into the dust ash hopper after rectifier airflow by the airflow distribution into the filter bag. Within the filter bag for filter bag, this is the common characteristics of reverse blowing bag-type duster. Small particles of dust were filter cloth when filtering resistance and separation, the filtered clean gas through a three-way reversing valve in the fan under the action of negative pressure through the vent into the atmosphere. Soot cleaning process, leading to the exhaust manifold was three-way reversing valve plate closed, to counter blowing duct three-way reversing valve and regulator valve plate is open, then the hair dryer, reverse blowing blowing filter bag of filter bag filter with opposite blow wash, the dust layer of filter bag will be blown away, clear grey. Soot cleaning after sedimentation process is to close the regulator, let the filter bag have neither filtering process nor the soot blowing process, but in the stationary phase, the settlement of blown away from the filter bag dust in ash hopper, reversing valve after reversing, sedimentation process stop into the filtering process. Mobile welding smoke purifier the calculation of main parameter of the mobile dust collector counter blowing bag-type dust ash removal when blow air circulation of the filter bag is the average speed of 0. 6 to 1. 5米/分钟。 Blow lasts 15 ~ 20 s, sometimes up to 50 s. The study concluded that no pressure dense dust layer peeling resistance is small. 1 m for the median diameter, density of 6 & times; The dust layer of 103 kg/m3, the resistance only 50 pa. Air pressure, however, is not a role in the whole area of dust layer, but only where there is a hole, therefore, to keep the dust off, requires higher back pressure on the filtration material the higher the porosity of the filter material, make the dust layer off the required pressure is lower, the higher degree resistance drop ash removal. For each filter material has counter blowing ash removal of maximum flow rate, to surpass the value does not significantly increase the dust off, and can only cause unnecessary energy consumption.
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