STRUCTURE OF SPRAY NOZZLE

摘要

PROBLEM TO BE SOLVED: To provide a structure of a spray nozzle of a spray device by carbon dioxide used in high pressure carbon dioxide coating or others.SOLUTION: A structure of a spray nozzle of a carbon dioxide spraying device spraying organic fluid from a high pressure environment to an atmospheric pressure by lowering the viscosity of the organic fluid by mixing continuously supplied high-pressure carbon dioxide and also continuously supplied high-viscosity organic fluid or organic fluid under a high pressure has a closing unit having a structure capable of closing the high-viscosity organic fluid or the organic fluid constituted by mixing and dissolving the high-pressure carbon dioxide directly in front of the spray nozzle, and a washing unit having a structure capable of washing the high-viscosity organic fluid or the organic fluid constituted by mixing and dissolving the high-pressure carbon dioxide remaining in the spray nozzle by separately supplied high-pressure carbon dioxide directly after closing the spray nozzle. It is possible to suppress liquid sagging appearing after closing spraying of the spray nozzle and troubles when restarting the spraying and to attain stable coating and application.