What are the methods and steps for cleaning smoke exhaust pipes?

The installation and cleaning personnel first remove the upper and lower sections of the pipeline, that is, the air method, which is mainly used to clean the vertical flue over 50 square centimeters. Secure the safety rope at high altitude above the flue, fasten the safety belt, and install the cleaning personnel to clean the oil in the vertical flue from top to bottom. This method is dangerous, technical, expensive and effective. Because vertical flue generally has less oil accumulation, it can be cleaned once a year. This method is labor-intensive, that is, manual entry method, and parallel flue larger than 40 cm square can be cleaned by manual drilling. Need to pay attention to strengthen ventilation, equipped with low-voltage (36V) lighting power supply.

This method is used when manual access is impossible, that is, when the flue is less than 40 square centimeters. According to the actual situation on site, the installation and cleaning personnel remove a section of flue at regular intervals and extend it to both sides for cleaning. This method is effective, difficult and costly. Installation and cleaning personnel use special spark-free tapping tools to tap one or more sides of the pipeline, that is, tapping method, which is used for manually inaccessible and difficult to disassemble flue. The size, interval and number of openings depend on the site conditions, and the pipeline will be sealed and repaired after the oil pollution is cleaned. The first thing is to choose a suitable installation location. The position of kitchen smoke exhaust pipeline is closely related to the length of the pipeline. Many home owners will let the installer pull the pipe very long for the sake of beauty. In fact, in this way, it is easy to keep the fumes in the pipeline from being discharged. Install ventilation ducts. When installing ventilation pipes, first find the elevation, drill holes in the wall with an electric drill, cooperate with the reserved bracket holes, and bury the hanger; Level and align the assembled air duct, and then fix it with fastening bolts. If ventilation and smoke exhaust pipes are installed, they should be separated. The ventilation direction and location of the two are different. The air quality of the former is better than that of the latter, so the same pipe cannot be used. Generally, there are two kinds of ventilation pipes: circular and rectangular. In the case of circular pipes, the average diameter will be used.