Plate glass tempering cooling system

A plate glass tempering cooling system, comprising an air collecting box, an air grid, and a conveying roller, an air inlet of the air collecting box being in communication with an air supply device, the air collecting box and the air grid being connected through several ventilation tubes, and the system further comprising:

• a damper, disposed between the air collecting box and the air grid, and configured to open or close the ventilation tubes;
• a driving mechanism, configured to drive the damper, to control closing and an opening range of the damper;
• an encoder, connected to the conveying roller, and configured to monitor information about a movement position of a plate glass on the conveying roller;
• and
• a control unit, electrically connected to the encoder and the driving mechanism respectively, and configured to receive position information of the plate glass that is fed back by the encoder, and send an instruction to the driving mechanism, to control the closing and the opening range of the damper.