With the continuous advancement of industrialization and urbanization, the dust and dirt pressure of ventilation pipelines in various industries is increasing, which increases the pressure of ventilation pipeline cleaning. Then, how should Jinan ventilation pipeline be cleaned? The cleaning process of ventilation pipeline mainly includes the following aspects.
One is to overhaul the equipment, clean the air duct and air intake, check whether the air duct connection is reliable, valve leakage, etc.
The second section cleans the ventilation duct, the fan and the air inlet. In the process of duct cleaning, operators are strictly forbidden to enter the duct for cleaning. Professional cleaning equipment should be used to effectively transport visible pollutants in pipelines to designated equipment.
Finally, after the cleaning work is completed, the dismantled air outlets are re-installed, the connection of pipelines is noticed, and the air output is adjusted. At the same time, the quality of equipment and the overall connection of ventilation ducts are checked to ensure the normal operation of ventilation ducts. Also pay attention to the production of detailed cleaning records, in order to daily equipment maintenance and next cleaning work.
Improve the air environment of the workshop by ventilation. On the one hand, the polluted air which does not meet the hygienic standards is discharged into the outdoor local places or the whole workshop; on the other hand, fresh air or purified air which meets the hygienic requirements enters the room. We call the former exhaust and the latter intake.
In Jinan, where harmful substances accumulate in local ventilation pipelines, traps are set up to remove harmful substances and control the diffusion of harmful substances into indoors. This type of ventilation is called local exhaust. This is the most effective way of ventilating gas and dust.
The local exhaust system consists of the following parts:
(1) Partial exhaust hood
Part of the exhaust hood is used to catch pests. Its performance directly affects the technical and economic indicators of local exhaust system. Local exhaust hood has good performance, such as closed exhaust hood, as long as the air volume is small, it can achieve good results. Due to the different production equipment and operation, the types of exhaust hood are different.
The pipeline that conveys gas in the ventilation system is called air duct. They connect the various devices or components in the system as a whole. In order to improve the economy of the system, the gas velocity in the pipeline should be reasonably selected, and the pipeline should be short and straight. Air ducts are usually made of smooth surface materials, such as steel plate, PVC board, and sometimes concrete, brick, etc.
(3) Dust removal and purification equipment
In order to prevent air pollution, when the harmful substances discharged in the air exceed the emission standards, it is necessary to use purification equipment for treatment. After meeting the emission standards, it will be discharged into the atmosphere. Purification equipment is divided into dust collector and harmful gas purification device.
Jinan ventilation duct fan captures the power of air flow with mechanical exhaust system. In order to prevent the fan from wearing and corrosion, it is usually placed behind the cleaning equipment.
If only exhaust or supply air in local areas, that is, local ventilation; if exhaust or supply air in the whole workshop, it should be fully ventilated. Generally, according to the different functional range of ventilation system, ventilation can be divided into local ventilation, comprehensive ventilation and accident ventilation. Local ventilation system can be divided into two categories: local intake and local exhaust. They all use local airflow to protect local workplaces from harmful substances and create a good air environment.