Automatic concrete aggregate feeding system

The utility model relates to the technical field of concrete processing equipment, in particular to an automatic concrete aggregate feeding system. Comprising a conveying belt, a screen drum provided with a plurality of screen holes and a buffer part, the buffer part comprises two buffer plates arranged oppositely, a connecting spring, two sets of rotating shafts and a closed shell, and the buffer part is arranged between the screen drum and the conveying belt and arranged on the upper side of the conveying belt; the closed shell is arranged on the lower side of the screen drum, the two buffer plates are arranged on the lower side of the closed shell, the two sets of rotating shafts correspond to the two buffer plates in a one-to-one mode, the two buffer plates are rotationally connected with the closed shell through the corresponding rotating shafts respectively, and the two ends of the connecting spring are connected with the lower sides of the two buffer plates respectively. The two oppositely-arranged buf