Industrial dryer

The utility model discloses an industrial dryer, and particularly relates to the technical field of drying equipment, the industrial dryer comprises a drying box and a transverse plate, the top of the transverse plate is provided with a supporting frame, one side of the supporting frame is provided with an air heater, one side of the air heater is provided with a conveying pipe, and the conveying pipe is connected with the supporting frame in a penetrating mode; and one end of the conveying pipe extends into the drying box, an extension pipe is arranged on one side of the conveying pipe, a dustproof cover is arranged on one side of the extension pipe, and the dustproof cover is in threaded connection with the extension pipe. The conveying pipe is arranged in the drying box, the conveying pipe is lengthened, the length of the conveying pipe is made to be consistent with that of the material cavity, hot air is manufactured through the hot air blower and conveyed into the drying box through the conveying pipe, t