Low-load stable combustion device suitable for rich-lean combustion

The utility model relates to the technical field of combustion equipment, in particular to a low-load stable combustion device suitable for rich-lean combustion, and aims to solve the problems that in actual operation of a pulverized coal boiler, due to limitation of ventilation of a coal mill and the like, the air-powder ratio is too high and the pulverized coal concentration is too low under a low-load working condition; a plurality of windward separation baffles which are sequentially arranged at intervals end to end, a plurality of leeward separation baffles which are sequentially arranged at intervals end to end and a dense-thin partition plate are sequentially arranged in the stable combustion device. One end of the windward separation baffle at the head end is connected with the inner top wall of the stable combustion device, the dense-thin partition plate is horizontally arranged in the middle of the outlet end of the stable combustion device and divides the outlet end of the stable combustion device