The working principle of the bag filter is that the dust particles are intercepted due to the inertia force and colliding of the bag wall of the filter bag when passing through the fiber of the filter bag. The tiny dust particles are constantly impacted by gas molecules and change their direction of motion, and finally stay on the surface of the dust filter bag. Its daily maintenance and maintenance are very important for extending the life of the bag filter. Because the initial layer of the high temperature dust bag is damaged or the assembly is not in place, dust emission may exceed the standard. Therefore, how to prolong the service life of the high temperature dust bag is very important.
Dust bag damage, wear, etc., in the bag filter maintenance, bag maintenance costs always occupy the largest proportion. Therefore, in general, attention should be paid to adjusting the exhaust gas flow rate of the dust collector. When the flow rate is large, an automatic flow control system should be added to ensure that the dust collector can work under a stable gas volume. The non-uniformity of the intake air can easily cause impact on a certain part of the cloth bag, resulting in breakage of the cloth bag puncture. At this time, intake guides should be installed at the air inlet ducts or replaced with more wear-resistant bags. Special attention should be paid to the distance between the bag and the keel. When the keel is welded, there are often burrs that can easily damage the bag. In the other case, due to the cloth sacks that have been exposed to high-temperature exhaust gas for a long time, the temperature of the exhaust gas is easily melted to produce holes. At this time, the bags should be replaced in time.