The invention discloses a vacuum paint drawing and vacuum fast
drying paint device and process for an inner cavity of a cooler for a
transformer. The device is characterized in that the device comprises a vacuum unit, a paint drawing device, an air draft unit, a continuous vacuum unit, a fast
drying paint process device are arranged along a conveying line and are communicated with a
tail gas recycling
treatment system through air ducts; vacuum method paint drawing, air drawing of the air draft unit and the vacuum method fast
drying paint are all in online
continuous operation; a program controls a conveying chain to run according to CNC in an ID code of a workpiece, the takt interval of the
machining time duration is 5-8 min, and the conveying speed is 8-12 m / min; a vacuumizing valve is opened, other valves are closed, a vacuum unit is started, and the sequence of two vacuum pumps is automatically controlled; after the vacuum degree is achieved, paint drawing is performed to automatically control the relevant functionality, and paint drawing is performed on the workpiece; and after paint drawing is full, a
compressed air valve is started after a paint drawing valve is closed, pressure is 0.1-0.2 MPa, after pressurizing is completed, a valve communicated with the
atmosphere and a paint returning valve are opened, paint in the workpiece flows back to a paint storing tank, and procedure conversion is performed.