The single bag filter is a dry dust filter. After the filter material is used for a period of time, due to the effects of sieve filtration, collision, retention, diffusion, static electricity, etc., the surface of the filter bag is covered with a layer of dust which is called the primary layer. During this subsequent movement, the primary layer became the primary filter layer for the filter material. Depending on the function of the primary layer, the filter material with larger mesh size can also obtain higher filtration efficiency. As the dust accumulates on the surface of the filter material, the efficiency and resistance of the dust collector increase accordingly. When the pressure difference between the two sides of the filter material is large, some fine dust particles that have adhered to the filter material will be squeezed past, and the efficiency of the dust collector is lowered. In addition, the excessive resistance of the precipitator will significantly reduce the air volume of the dedusting system. Therefore, after the resistance of the precipitator reaches a certain value, it should be cleaned in time. The initial layer should not be destroyed when cleaning, so as to avoid the efficiency drop.
With the repeated adhesion of the powder to the outer surface of the filter bag, the powder layer is continuously thickened, and the resistance value of the bag filter is also increased. With the repeated adhesion of the powder to the outer surface of the filter bag, the powder layer is continuously thickened, and the resistance value of the bag filter is also increased. The pulse valve diaphragm sends out a command. When the left and right flooded, the pulse valve opens, and the compressed air in the high-pressure air bag passes. If there is no dust or the dust is very small, the mechanical cleaning work will stop working.