In the process of newly installing the spray booth, the spray cleaning workshop should pay attention to the cleanliness of the air supply system. It should be cleaned and installed. Before the cold commissioning, it should be thoroughly cleaned and cleaned. The supply and exhaust fans should be started for a certain period of time before being put into production. Install the filter bag and filter layer. In order to ensure the cleanliness of the air supply required for the coating process, the filter bag and the filter layer must be correctly selected. In the air supply system of the spray booth, coarse and fine filtration are generally provided, and the primary effect and intermediate effect filter bags are respectively used. Filter bags and non-woven filter layers are generally required between the static and dynamic pressure chambers of the spray booth and the ceiling. The air pressure difference between the front and the back of the filter layer should be checked frequently during the operation of the spray booth. If the pressure difference is greater than the rated value, the filter bag needs to be replaced or cleaned.
In the circulating water of the spray booth of the spray cleaning workshop, it is necessary to add a paint fog coagulant suitable for the paint used. When the coagulant is properly selected and professionally managed, the discharge cycle of the circulating water in the spray booth can be greatly extended. It is strictly forbidden to use material fittings that cause shrinkage of the coating film in the spray booth system equipment. For example, sealant, gasket, sealing rubber strip, etc. must pass the shrinkage hole test before selection, and it is confirmed that the material that causes the shrinkage cavity is not used. Only the maintenance and management of the spray booth can strengthen the function of the spray booth and ensure the quality of the spray booth. The daily, monthly and annual spray booth maintenance items should be prepared for daily, monthly and annual maintenance. Management system, in the spraying process, the spray chamber is easily polluted by paint mist, the spray station is kept clean and tidy every shift, and must be cleaned every week; the working condition and cleanliness of the wallboard and water washing device must be checked frequently. The cleanliness of the exhaust fan blades must be checked regularly for timely cleaning. Zhongjing Global Purification can provide consulting, planning, design, construction and decoration services such as spray cleaning workshop.
The difference in temperature and humidity in the spray booth of the spray cleaning workshop has a great influence on the appearance of the water-based coating film just after spraying. The temperature and humidity of the air supply must be strictly controlled and adjusted; especially in the metal coating of the automobile painting line. In the case of painting, in order to prevent the appearance of poor paint sag, uneven coloring, the humidity should be controlled at about 70%, while in the case of spraying solvent-based coatings, the humidity control requirements are not strict; More than half of the wind installations, and more than half of the coating equipment, require a new spraying process that is not affected by the humidity in the painting booth. The water-based paint in the spray cleaning workshop is similar to the surfactant, easy to foam, and there should be room for the tank solvent in the spray booth. It is necessary to design a small water surface drop. Compared with solvent-based coatings, water-based coatings tend to produce pores. It should be confirmed that there is no oil mist around the air supply port. In the case of poor ambient atmosphere, it is better to use oil high-performance filter to absorb oil mist.