What are the use and maintenance of bag filter


The general problems and precautions for the use and ma […]

The general problems and precautions for the use and maintenance of bag dust collectors can be divided into three aspects: excessive dust discharge, dust collector pressure higher than normal, and filter bag wholesale filter press filter cloth factoryservice life is too short. There is a clear correlation between the three. Introduction as follows:

   1. Dust emission exceeds the standard

  Basic causes of excessive dust emissions

   1. The initial layer on the surface of the filter bag is not enough;

   2. The filter bag is damaged;

   3. Poor filter bag assembly;

   is described as follows:

   1. The initial layer on the surface of the filter bag is not enough

In the operation of the dust collector, if the discharge exceeds the standard and the operating pressure of the dust collector is lower than the design, it is most likely that the initial powder layer on the surface of the filter bag is insufficient. The reason may be that the filter bag filter speed is too high, the filter bag The cleaning cycle is too short, the pressure of blowing compressed air is too high, and the load of dust is reduced.


Studies have shown that: too high filtration speed, the dust discharge rate will increase, too high filtration air speed will break the initial dust layer, and the dust impacts the filter bag and causes excessive wear, if the filter bag cleaning times are too high It is easy to cause the filter bag fabric to be loose, which will make the dust collector discharge exceed the standard.

When setting the pulse cleaning cycle of the dust collector, it is better to ensure that the dust collector works under a stable pressure and the pulse cleaning cycle time is the longest. The pulse cleaning time can ensure that the initial dust does not fall off, the set time The shortest cleaning is better. If the initial dust layer is insufficient, you can use the extended cleaning cycle to compensate. If you use differential pressure control, you can improve the stability of the dust inlet and outlet pressure settings.

  If the discharge of the dust collector exceeds the standard only after cleaning the filter bag, you only need to check whether the pressure of the compressed air for pulse cleaning is too large.

   The load reduction of dust may come from the reduction of productivity, or caused by the maintenance and adjustment of the control system of the dust collector. The solution: you can start slowly with a light load or use the method of pre-coated dust.

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