3D printing conveying system applied to fine aggregate concrete

The utility model provides a 3D printing conveying system applied to fine aggregate concrete, and relates to the technical field of 3D building printing equipment. The conveying system comprises a feeding unit and a pipeline. And the feeding unit comprises a concrete conveying pump machine. A printing head of the printing unit comprises an installation main plate, an extrusion barrel with an opening in the upper end is fixedly arranged on the installation main plate, a feeding pipe is arranged at the upper end of the extrusion barrel, and the feeding pipe is connected with a discharging port of the concrete conveying pump machine through a pipeline. A conveying auger is arranged in the extrusion barrel, the upper end of the conveying auger is rotationally connected with a mounting frame through a bearing assembly, the mounting frame is fixedly arranged on the mounting main plate, and a feeding motor used for driving the conveying auger to rotate is arranged on the mounting frame. The 3D printing conveying sys