Welding waste gas treatment device welding purifier Qingdao Shengyada

The purpose of whole-room ventilation is mainly to introduce fresh outdoor air to dilute the concentration of welding fume in the indoor air, so that the average concentration of welding fume in the work area is controlled below the allowable standard. From the perspective of air balance, as much fresh air needs to be introduced as much indoor air containing welding fumes must be discharged. In this way, fresh air is continuously introduced and indoor polluted air is continuously discharged, thereby taking away the welding fumes that are constantly generated indoors. .
Whole room ventilation is also divided into organized natural ventilation and mechanical ventilation.
) Organized natural ventilation
The usual method for organized natural ventilation is to set up smoke exhaust skylights on the roof and set up air inlets with sufficient air intake area in the lower part of the exterior wall. According to national survey data, there are many good examples of this whole-room ventilation method. See picture ~ picture.
From 2000 to 2015, the State Machinery Industry Commission organized specialized personnel to conduct a special investigation on welding smoke. A total of 10 machinery factories in 10 provinces, municipalities and autonomous regions were investigated. The natural smoke exhaust method of skylights and high side windows was the most commonly used method. It is widely used because of its large ventilation capacity and no need to consume electricity. Survey practice shows that all workshops with light welding smoke pollution and good ventilation effects are equipped with skylights and high side windows. However, the investigation also revealed that most of the skylight and high side window opening mechanisms failed, and most workshops did not have window opening mechanisms, so they had to let nature take its course. In heating areas, close skylights and high side windows in winter to maintain room temperature and lose the smoke exhaust function.
When using organized natural ventilation, the following issues should be noted
There must be sufficient air inlet area. Due to the nature of production, the door of the welding workshop is generally a normally open type and can be partially included in the air inlet area
br/> A single-span workshop is most beneficial to natural ventilation in a welding workshop. In a multi-span workshop, it is best to arrange the welding department facing the exterior wall
The process layout in the welding workshop should consider the influence of the inlet and exhaust airflow to avoid high The airflow of the side window and skylight should be short-circuited to avoid welding fumes from contaminating relatively clean areas with the airflow.
The skylight should be equipped with a reliable and flexible opening and closing mechanism. The skylights are all located high on the roof or at the ridge of the factory building. It is difficult to open and close the windows manually by frequently climbing up. It is recommended to use an electric window opening mechanism.