UV spraying device with air self-circulation recycling function

The invention discloses an air self-circulation recycling UV spraying device which is characterized in that a circulation filtering ring is annular, and the circulation filtering ring penetrates through a paint spraying chamber; a movable particle filtering mechanism is arranged on the circulating filtering ring; the circulating filter ring is connected with a centrifugal filter ring through a first transfer pipe, and the centrifugal filter ring is annular; the centrifugal filter ring is communicated with a high negative pressure fine filter through a second transfer pipe, the high negative pressure fine filter is communicated with a high negative pressure exhaust mechanism, and an electric heating pipe is wound around the high negative pressure fine filter; the first transfer pipe and the second transfer pipe are respectively provided with an electric control valve. The paint in the air can be filtered by the reusable granular medium, the paint cannot volatilize after being heated and ...