Dry type polystyrene pelletizing system

The utility model relates to the technical field of polystyrene processing, in particular to a polystyrene dry-type pelletizing system which comprises an extruding machine, a conveying mechanism, a cooling mechanism, a heating mechanism and a pelletizing machine, the conveying mechanism is arranged on one side of the output end of the extruding machine, the cooling mechanism is arranged above the input end of the conveying mechanism, and the heating mechanism is arranged above the pelletizing machine. The heating mechanism is arranged above the output end of the conveying mechanism, the granulator is arranged on one side of the output end of the conveying mechanism, and the cooling mechanism is arranged to quickly cool a just extruded material entering the conveying mechanism, so that the material can be quickly formed, and the extruded material does not need to be cooled in a water cooling manner; the surface of the forming material is heated, so that the surface of the forming material is not too hard, a bl