Preheater for clinker production line

The utility model relates to a clinker production line preheater which comprises a stock bin, a blanking pipe, a preheating chamber and a blanking funnel which are sequentially arranged from top to bottom, and further comprises a pushing device for pushing materials on the inclined surface of the bottom in the preheating chamber to the blanking funnel, the material pushing device comprises a plurality of pushing heads evenly distributed in the circumferential direction and a driving mechanism driving all the pushing heads to reciprocate in the radial direction of the preheating chamber, the moving directions of the adjacent pushing heads are opposite, each pushing head is of a hollow structure, the rear end of each pushing head communicates with a high-pressure air source through an air inlet hose, and a plurality of upper air spraying openings are formed in the upper end face of each pushing head. The moving directions of the adjacent pushing heads are opposite, so that the whole material is uniformly pushed