A car spray booth is a specially designed enclosure used for painting vehicles. The booth protects the painter from the harmful effects of paint fumes and overspray, and also provides a controlled environment in which to work.
①Brightness, the brightness in the paint room should reach 800-1000 lux, and the light close to the D65 light source should be used, and the walls in the room should be matte white;
③ The filtering effect depends on the model of the roof cotton. Generally, the repair shop uses two models: EU5 and EU6. When using the paint booth, the upper part can be irradiated with a sun lamp in the room. Usually, very fine dust per square meter should be used. less than 5;
④For the sealing effect of the wall, the paint baking room must be sealed, and there should be no accumulation of paint dust at the joints;
⑤ To ensure positive pressure, the air intake of the paint booth should be slightly larger than the air outlet, so that the paint booth is kept under positive pressure;
⑥ The sealing effect of the heating system should be well sealed around the burner and the chimney, and no putty after combustion may appear;
⑦The heating rate, the time it takes for the paint booth to rise from 20°C to 60°C is about 10-15min. At the same time, it should be noted that the thermometers in some paint booths are not accurate. When measuring the temperature, the temperature of the metal body in the paint booth should prevail.
If the selected paint booth can meet the above conditions, it is an ideal paint booth. However, in the process of using over time, there will be many situations such as poor quality of the paint booth, more dust in the room, poor construction effect, poor lighting effect, etc. In fact, as long as everyone can use and maintain the paint booth correctly, these problems will is completely avoidable.
When painting, the outside air is sent to the roof by the fan after being filtered by the primary filter, and then enters the room after being filtered and purified by the top filter for a second time. The air in the room adopts a full-drop type, and flows downward at a speed of ≥0.3m/s, so that the paint mist particles after spraying cannot stay in the air, and after directly passing through the bottom filter device, they are discharged out of the room from the air outlet.
In this way, the continuous cycle conversion makes the air cleanliness in the room reach more than 98% when painting, and the air sent in has a certain pressure to ensure that the indoor dust will not leak into the painting room and pollute the surface of the workpiece, so as to maximize the Guarantee the quality of spray paint.
When baking paint, adjust the damper to the paint baking position, the hot air circulates, and the temperature in the baking room rises rapidly to the predetermined drying temperature (≤80℃). After the fan first filters the fresh air from the outside, it exchanges heat with the heat energy converter and sends it to the air chamber at the top of the paint baking room, and then goes through the second filtration and purification. , most of the hot air is continuously heated and used, which makes the temperature in the paint booth gradually increase.
When the temperature reaches the set temperature, the burner stops automatically; when the temperature drops to the set temperature, the fan and the burner are automatically turned on again, so that the temperature in the paint booth remains relatively constant. Finally, when the paint baking time reaches the set time, the paint baking room automatically shuts down and the paint baking is over.
1. Determine a reasonable configuration form.
2. Determine a reasonable average air velocity on the horizontal plane of the spray booth.
3. The air supply and exhaust systems are reasonably matched to ensure a slight negative pressure in the painting room.
4. The thickness of the water curtain should be uniform, and attention should be paid to the structure of the upper water tank and the distribution of the water supply pipeline.
5. The distance from the lower part of the water curtain plate to the liquid level of the water tank should be reasonable.
6. The water-washing atomizing nozzles and pipelines should be easy to disassemble, replace and clean.
7. The gas-water separation and sedimentation should be sufficient and easy to clean.
There are many combinations of spray booth products. The non-standard specifications allow various manufacturers to choose their own environmental protection equipment.
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