The bag replacement cycle has a great relationship with the quality of the dust bag used, and is also related to the use of the environment and the use of strength, so the bag replacement cycle is not fixed, and the equipment should pay attention to whether the ash removal system is smooth when running. Prevent clogging and corrosion, serious ash accumulation will affect the production of the main engine. The adjustment of cleaning cycle and cleaning time is an important factor for dust collection performance and operation. If the cleaning time is too long, the attached dust layer will be cleared off, which will become the cause of leakage and damage of the filter bag. If the cleaning time is too short, the dust on the filter bag has not yet been cleared off, and the filtration operation will be resumed, which will make the resistance recover quickly and gradually increase, and ultimately affect the use effect.