Use and Maintenance of Bag Type Dust Collector

The general problems and precautions of the use and maintenance of the bag type dust collector can be divided into three aspects: excessive dust emission, higher pressure than normal, and short service life of the filter bag. Now I will explain to you the reasons and solutions for excessive dust emission:

The basic reasons for excessive dust emission are:

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

2. The filter bag is damaged;

3. Poor assembly of the filter bag;　

In the operation of the bag type dust collector, if the discharge exceeds the standard and the operating pressure of the bag type dust collector is too low than the design, it is most likely that the initial dust layer on the surface of the filter bag is insufficient. The reason may be that the filter bag's filtering speed is too high and the filter bag's cleaning cycle is too short, the pressure of the compressed air is too high, and the dust load performance 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 very easy to cause the fabric of the filter bag to loosen, which will cause the bag type dust collector to discharge excessively.

When setting the pulse cleaning cycle of the precipitator, it is better to ensure that the precipitator works under a stable pressure, and the set pulse cleaning cycle time is better. The pulse cleaning time can ensure that the initial dust does not fall off, and the shorter set time of 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 bag type dust collector can be improved.　

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

The reduction of dust load may be caused by the reduction of productivity, or the overhaul and adjustment of the control system of the bag type dust collector. The solution: it can be solved by slowly starting the load with light load or by pre-coating dust.