Discharging roller

A discharging roller comprises a roller shaft and at least three fan-shaped bodies arranged on the peripheral face of the roller shaft, wherein the fan-shaped bodies are sequentially arranged at intervals so that every two adjacent fan-shaped bodies can be matched with each other, and a partition groove can be formed between every two adjacent fan-shaped bodies; an inverted insertion plate is arranged at the position, where each partition groove is located, of the discharging roller, so that particulate matters falling into the partition grooves are prevented from being discharged outwards in the opening direction of the partition grooves; and the end faces of the sides, away from the roller shaft, of the fan-shaped bodies are arranged on the same arc face so as to form a supporting roller face of the discharging roller, and a conveying belt can be connected to the supporting roller face in a sleeved mode. According to the discharging device, particulate matters entering the position between the conveying belt and the discharging roller can be automatically discharged, and then the conveying belt assembled on the discharging roller is effectively protected, and the effect of prolonging the service life is achieved; and meanwhile, the discharging roller is simple in structure and convenient to produce and manufacture, so that the use requirements of enterprises are further met.