Product introduction: bag filter is a dry dust filtering device. After the filter material is used for a period of time, due to the effects of screening, collision, retention, diffusion and static electricity, a layer of dust is accumulated on the surface area of the filter bag. This layer of dust is called the primary layer. In the later movement process, the primary layer becomes the main filter layer of the filter material. Relying on the role of the primary layer, the filter material with large mesh can also obtain high filtration efficiency. With the accumulation of dust on the surface of the filter material, the efficiency and resistance of the dust collector increase accordingly. When the pressure difference on both sides of the filter material is very large, some fine dust particles that have been attached to the filter material will be squeezed, so that the efficiency of the dust collector decreases. In addition, the high resistance of the dust collector will significantly reduce the air volume of the dust removal system. Therefore, after the resistance of the dust collector reaches a certain value, the ash shall be removed in time. The initial layer shall not be damaged during ash removal, so as not to reduce the efficiency.

  Working principle: the high dust removal efficiency of bag filter is inseparable from its dust removal mechanism. When the dusty gas enters the ash hopper through the air inlet pipe at the lower part of the dust remover and the deflector, due to the collision of the deflector and the reduction of gas velocity, the coarse-grained dust will fall into the ash hopper, and the other fine-grained dust will enter the filter bag chamber with the gas. Due to the inertia, diffusion, barrier, hook, static electricity and other effects of the filter fiber and fabric, the dust will be blocked in the filter bag, and the purified gas will escape out of the bag, It is discharged through the exhaust pipe. The accumulated dust on the filter bag is removed by gas back washing method. The removed dust is discharged to the ash hopper and discharged to the ash conveying device through the double-layer ash unloading valve. The accumulated dust on the filter bag can also be removed by injecting pulse air flow, so as to achieve the purpose of ash removal. The removed dust is discharged by the ash discharge device. The high dust removal efficiency of bag filter is also inseparable from the filter material. The performance and quality of filter material are directly related to the performance and service life of bag filter. Filter material is the main material for making filter bag. Its performance and quality promote the progress of bag dust removal technology and affect its application scope and service life.