Leveling and curing film to achieve a method for coating purposes. In the painting process will produce a large number of non-adsorbed powder, these powders will pollute the surrounding air. Currently, there are powder recovery cyclone and filter type two categories.
1 cyclone recovery formula powder flow is rotational movement, under the influence of centrifugal force, to achieve the purpose of flow separation and powder coatings. Depending on the type powder recovery cyclone structure, a powder recovery ships can reach 80 to 90%, in order to meet environmental requirements, separation of fine powder particles to ensure clean exhaust gas stream at the discharge end of the cyclone-type recovery needs add a Secondary filter.
2 filter powder recovery is the powder airflow through the filter material with a certain pore, to gas and solid separation purposes, but the drawback is the filter material easy to plug the pores, resulting in reduced airflow recycled, recycling effect is reduced. To overcome this drawback, there has been pulse cleaning filter device using pulse cleaning regular cleaning of the filter material particles are adsorbed on the pores, so that the air flow to maintain flow to maintain a constant recovery, according to the size of the powder particles, select the appropriate filter material, typically a powder recovery rate can reach 98%. In the powder coating process, it uses pulse cleaning filter device, but the change pink color change of requirements, the need for spray booth and recovery systems to clean up, resulting in a lot of time to clean up the waste toner spills, pollution.
A method for powder coating of powder overspray recovery from a cyclone device, automatic discharge valve and secondary pulse cleaning cartridge filter recovery composition; a cyclone inlet means relative to the spray booth connection, settling chamber a cyclone separation apparatus with automatic unloading valve connected to the discharge port a cyclone separation apparatus with two pulse cleaning cartridge filter recovery was inlet connection, two pulse cleaning cartridge filter recovery the outlet is connected through duct and induced draft fan. The utility model has the advantages are: to improve the automation of the powder coating process and improve the effective utilization of the powder, the powder coating process, reducing the time and cleaning powder spray booth pollution of the atmosphere, which greatly reduces the powder coating process labor intensity, so that the coating has been significantly improved labor productivity.