Roller cleaning device

The invention relates to a roller cleaning device which comprises a frame body, a roller cleaning device, a roller cleaning device and a roller cleaning device, and a containing cavity, a first window and a second window are formed in the frame body; the water supply assembly is arranged in the containing cavity, and the water supply assembly is provided with a water inlet end and a water outlet end; the nozzle is provided with a jet orifice; a capping assembly; the water supply assembly drives the nozzle to extend out of the first window to spray water to clean the roller, or the water supply assembly drives the nozzle to retract into the containing cavity from the first window of the frame body to enable the sealing cover assembly to seal the first window. According to the roller cleaning device provided by the embodiment of the invention, the cleaning device is mounted in the roller through the frame body, water flow cleans the interior of the roller through the nozzles, the nozzles can rotate and can comp