The invention discloses a spraying
system capable of intelligently adjusting air balance of a whole line. The spraying
system comprises an air supply and exhaust
control unit, a multi-dimensional sensor unit and a
control unit. The air supply and exhaust
control unit comprises a plurality of air supply and exhaust systems which are applied to a feeding and discharging area, a heating chamber, a manual and automatic dust removal area, a slitting area, a
UV curing area and a spraying room respectively and structurally comprises a high-pressure fan, an air supplement fan, an environment air supply box, a
proportional valve, a circulating fan and a waste
discharge fan, and it is ensured that the
air volume and the
pressure difference of all the areas are controllable. The multi-dimensional sensor unit is used for collecting
air volume,
pressure difference and VOC concentration data of each area. The control unit comprises a PLC (
Programmable Logic Controller), a frequency converter group and an industrial
personal computer, and is used for executing a PID (
Proportion Integration Differentiation) control strategy and adjusting the rotating speed of a fan and the opening degree of a
proportional valve based on sensor data through a wind balance
control algorithm and a VOC concentration
control algorithm so as to realize the stable control on the wind balance of the whole line and the VOC concentration of the spraying room. According to the
system, various air supply and exhaust mechanisms and
intelligent control algorithms are integrated, and the environment control precision and efficiency in the spraying process can be effectively improved.