The general problems and precautions of the use and maintenance of the bag filter can be divided into three aspects: excessive dust emission, higher than normal pressure of the filter, and too short service life of the filter bag. There is a clear correlation between the three. as follows:

1、Excessive dust emission

2、The basic cause of excessive dust emission

3、The initial layer on the surface of the filter bag is not enough;

4、the filter bag is damaged;

5、Poor assembly of filter bag; are described as follows:

6、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 too low than the design, it is most likely that the initial powder layer on the surface of the filter bag is insufficient. The cleaning cycle is too short, the pressure of the compressed air is too high, and the dust load is reduced.

Studies have shown that: too high a filtration rate, the discharge rate of dust will increase, and too high a filtration rate will break the initial dust layer, and the dust will impact the filter bag and cause excessive wear. If the number of cleaning the filter bag is too high at this time It is easy to cause the fabric of the filter bag to loosen, which will cause the dust collector to discharge excessively.

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

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

The reduction in dust load may be caused by a reduction in productivity, or due to overhaul and adjustment of the control system of the precipitator. The solution: it can be solved by slowly starting the load with a light load or by pre-coating dus