Glass cleaning device

The invention discloses a glass cleaning device. The glass cleaning device comprises a roller type conveying belt, and an upper cleaning pipe and an upper air knife pipe are mounted above the roller type conveying belt; a lower cleaning pipe and a lower air knife pipe are mounted below the roller type conveying belt; a plurality of cleaning nozzles are mounted on the upper cleaning pipe and the lower cleaning pipe in the original length direction; a plurality of air knife nozzles are mounted on the upper air knife pipe and the lower air knife pipe; internal threads are formed inside the upper cleaning pipe, the upper air knife pipe, the lower cleaning pipe and the lower air knife pipe, and external threads are formed outside the upper cleaning pipe, the upper air knife pipe and the lower air knife pipe; the internal threads are in threaded connection with a front piston, the front piston is connected with the front end of a rotating shaft, and a plurality of first magnets are fixed to the rotating shaft in th