Air feeding appts. for mechanical cement vertical kiln

The utility model relates to an air feeding apparatus for a mechanical cement vertical kiln, which is composed of an air feeding chamber, an upper air inlet pipe, a lower air inlet pipe and an auxiliary air blower, wherein, the air feeding chamber (6) is arranged at the lower part out of a kiln body (2) and is communicated with an inner cavity at the upper part of the kiln body (2) through the upper air inlet pipe (3) and is communicated with an inner cavity at the lower part of the kiln body (2) through the lower air inlet pipe (5); the auxiliary air blower (1) is arranged in the upper air inlet pipe (3), and the auxiliary air blower (4) is arranged in the lower air inlet pipe (5); a middle part air inlet pipe (7) is additionally arranged on the kiln body in a special shape. The utility model can correct the problems of air-feeding unevenness and low speed of ignition and effectively control the phenomena of the edge turning down on the kiln face and fire eccentricity, and has convenient operation. Machine-hour output of the existing mechanical vertical kiln can be increased more than 10 percentage to 40 percentage on the original basis; the clinker can be marked with 28 days, and the strength is improved from three to five MPa; clinker of coal consumption Kg is reduced from 100 kcal to 300 kcal. The utility model has the advantages of increased work efficiency, improved production yield, reduced energy consumption and good resource saving effect.