The main factor causing the aging of dust collector bags is the concentration of dust in the gas processed by the dust collector bag, which directly affects the resistance and service life of the filter bag. The thicker the dust layer attached to the surface of the dust collector bag, the greater the resistance and the greater the impact on the service life of the filter bag. The aging of dust removal bags is mainly caused by the following reasons: firstly, hardening and shrinkage due to abnormal high temperatures; 2、 Reacting with vapors of acids, bases, or solvents; 3、 Reacts with water. 4、 The dust bag should not be hung too loose or too tight, as it is easy to accumulate dust if it is too loose and easy to break if it is too tight. 5、 The replaced cloth bag should be blown clean with compressed air first, and then checked for any holes. If there are holes, they should be repaired and left for replacement. If the cloth bag is covered in dust, rinse it with water, let it dry, and leave it for replacement. Analysis of the causes of the "smoke" phenomenon in the dust collector bag: This "dust" phenomenon can be divided into two situations. One is continuous "dust", which is caused by severe damage to the dust collector bag, loose binding of the bag, or loose connection between the upper and lower lifting ports of the bag dust collector, resulting in dust leakage between the upper lifting port and the flower board, or between the flower boards. Another type is instant "dust emission", which occurs when the dust removal bag is damaged but not severely damaged, resulting in instant "dust emission" during the spraying of the bag filter. When searching for the cause of "dust emission" in a bag filter, the number of bits corresponding to the action of the pulse controller and electromagnetic pulse valve during the "dust emission" can be used to determine which row of dust filter bags is leaking dust. The upper cover bag filter can be used to detect the leaking filter bag with a flashlight from the observation hole of the upper box; You can also open the top cover and then turn on the pulse controller. During the spraying process, pay attention to which Venturi tube "emits dust", which is the dust filter bag leaking dust. Then deal with the problems that arise. When replacing the dust filter bag of a bag filter, it is necessary to inspect and analyze the cause of its damage. The factors that affect the service life of dust removal filter bags include the properties of dust, the distribution of airflow, and the processing quality of dust removal skeleton. If the welding of the filter bag frame is not firm and the dust removal filter bag is punctured during use, it should be welded in a timely manner, and the burrs and welding slag of the dust removal skeleton should be ground flat and polished, or replaced with a new dust removal skeleton. The filter bag skeleton is usually welded with steel wires with a diameter of 4 millimeters. There are two commonly used welding methods, one is spot welding with a spot welding machine, and the other is welding with oxygen acetylene. Using the previous method for production, the surface is smooth, less prone to burrs, and has minimal deformation. Using the latter method results in low production efficiency, rough surface, and easy deformation. In addition, some use plastic frames, but these frames are not suitable for use at high temperatures. During the spraying process, as the filter bag rubs against the outer surface of the dust removal frame every time it is cleaned, although the dust removal filter bag is not damaged after use, the contact area between its inner surface and the dust removal frame has worn out. When reinstalling, the original part can be staggered according to the wear marks to avoid further wear in place, which can extend the service life of the dust removal filter bag. When installing the filter bag skeleton of the bag filter, pay attention to cleaning the dust accumulation on the porous plate of the pulse dust collector when removing the cover, in order to prevent air leakage caused by the loose connection between the interface and the porous plate, which affects the purification efficiency; The nozzle hole should be aligned with the center of the Venturi tube to achieve the desired blowing effect. Attention should be paid to the proper tightness of the upper and lower suspension ports of the opposite side door dust collector to prevent the lower suspension port from falling off and damaging the threads. When disassembling and installing the dust removal bag, be careful not to collide with the metal edges of the bag filter to prevent hidden injuries.
