It is necessary to understand the working principle and structural performance of spray painting and drying line equipment, master the usage method and operation process of spray painting and drying line equipment, and strictly follow the requirements of the coating and drying line operation manual.
The spray painting and drying line equipment is suitable for surface painting of workpieces, mainly used for large-scale work painting, and forms transportation operations with hanging conveyors, electric rail cars, ground conveyors and other transportation machinery. The paint drying line should avoid direct contact with the skin and be isolated through protective clothing, goggles, and gas masks. The spray painting and drying line should be designed strictly in accordance with labor protection, hygiene, fire protection, and environmental protection standards.
Fully utilize technology and processes to reduce investment costs and energy consumption while ensuring quality. The polishing, spraying, and drying production line of the entire communication vehicle consists of two parallel lines, each equipped with a polishing room, a spraying room, and a drying room. The paint drying line consists of a polishing room, a spray painting room, a cooling room, and a drying room.
The ventilation of the paint drying line room must be adjusted according to the cross-section of the opening to ensure that powder does not flow out of the powder spraying room and escape the opening. At the same time, air should be recovered during the spraying process, and the total amount of gas should ensure that the concentration of overspray powder is at the lower explosive limit.
The recycling and purification device connected to the powder spraying box should be equipped with a quick ventilation opening in the outdoor space to prevent explosion accidents. A grille or magnetic separation device should be installed at the entrance of the high-speed suction pipe to prevent metal or hard objects from entering the pipe and causing sparks due to friction and collision.
The spray painting drying line should be equipped with a powder cleaning mechanism and continuous powder cleaning should be carried out to ensure that there is no powder accumulation in the warehouse.
Recovery of wind speed in air ducts, horizontal pipes, and elbows. The powder absorption space must be sufficient (15m/s) to ensure that there is no powder accumulation in the pipeline and prevent dust explosions in the spraying space from causing more destructive secondary injuries. The spray painting and drying line is equipped with flame detectors and linked fire extinguishing devices. The connecting pipe between the spray box and the recycling device is equipped with a shut-off valve, which is used for regular maintenance and calibration of the lifting rope to prevent the transmission chain from loosening and tilting due to the lifting hook.
At the same time, in order to prevent the suspension from swinging and falling, insufficient electrode spacing in the electrostatic circuit can lead to critical or short-circuit discharge.
