Cement grate cooler

The utility model provides a cement grate cooler which comprises a grate type shell, and a grate bed is arranged on the inner bottom face of the grate type shell through a plurality of supporting columns. A feeding opening is formed in the top of the left side of the grate type shell, a material guide barrel is arranged at the feeding opening, and cooling fins are arranged on the circumferential surface of the material guide barrel; the grate bed sequentially comprises a first-section grate bed, a second-section grate bed and a third-section grate bed from left to right, three cooling air inlets are formed in the bottom of the grate type shell, the three cooling air inlets are located below the centers of the first-section grate bed, the second-section grate bed and the third-section gratebed respectively, and the cooling air inlets are connected with an air outlet disc; a secondary air outlet is formed in the left end of the top face of the grate type shell, a waste heat recovery airoutlet is formed in the m