A material-feeding device having an automatic sweep unit is disclosed, which is suitable for being installed on a material drying machine provided with a drying room. The material-feeding device comprises a material-feeding pipe, a spiral material-feeding rod, at least one automatic sweep unit. The material-feeding pipe is utilized to surroundingly define a pipe chamber and at least one material-discharging port that is located at the bottom thereof and communicated with the pipe chamber and the drying room. The spiral material-feeding rod is arranged in the pipe chamber of the material-feeding pipe. The automatic sweep unit, which is arranged relatively to the material-discharging port of the material-feeding pipe, comprises a drive mechanism and a baffle plate that is capable of being driven by the drive mechanism and being opened to close the material-discharging port of the material-feeding pipe. Accordingly, when the material accumulation is formed at the bottom of the material-feeding pipe of the material-feeding device, the drive mechanism is utilized to drive the baffle plate and open the material-discharging port of the material-feeding pipe, thereby dropping the accumulated materials to the drying room so as to evacuate the material-feeding pipe.一種具有自動掃除單元的送料裝置,適用於裝設在具有一乾燥室的一物料乾燥機,並包含一包圍界定一管腔及至少一位於底部且連通該管腔與該乾燥室的除料口的送料管、一設置於該管腔的螺旋送料桿,及至少一對應該除料口設置的自動掃除單元。該自動掃除單元包括一驅動機構,及一可受該驅動機構驅動並可開啟地封閉該除料口的擋板。藉此,當該送料管底部產生積料時,該自動掃除單元的驅動機構能驅動該擋板並開啟該除料口,如此,積料便能經由該除料口落下至該乾燥室並清空該送料管。1‧‧‧送料管11‧‧‧管腔15‧‧‧除料口16‧‧‧導引面2‧‧‧螺旋送料桿4‧‧‧自動掃除單元41‧‧‧驅動機構42‧‧‧擋板422‧‧‧從動部43‧‧‧推桿
