Communicated dual-coal lock feeding device for gasifier

The utility model provides a communicated dual-coal lock feeding device for a gasifier. The feeding device comprises two coal locks (1), a coal lock top valve (2), a coal lock bottom valve (3), coal inlets (14), a transition chamber (4) and a coal outlet (13); the coal inlet (14) is formed in the top of each of the two coal locks (1); the coal lock top valve (2) is arranged under the coal inlets (14); the bottoms of the coal locks (1) are communicated with the top of a connecting pipe (7); the coal lock bottom valve (3) is mounted at the top of the connecting pipe (7); the bottom of the connecting pipe (7) is connected with the transition chamber (4); the coal outlet (13) is formed in the bottom of the transition chamber (4); the two coal locks (1) are connected by use of at least one coal lock gas channel (5). The communicated dual-coal lock feeding device for the gasifier has the advantages of low coal gas pressing gas consumption and low operating cost.