Ammonia-doped multi-stage turbulent burner with adjustable axial air classification section

The invention relates to an ammonia-doped multi-stage turbulent burner with an adjustable axial air classification section. Comprising a combustion chamber shell which is provided with a hollow combustion chamber; the first-stage cyclone cavity comprises a first-stage cyclone, an air inlet pipe, a gasket and a porous plate; the second-stage cyclone cavity comprises a second-stage cyclone, an air inlet pipe, a gasket and a porous plate; the third-stage cyclone cavity comprises a third-stage cyclone, an air inlet pipe, a gasket and a porous plate; the grading air cavity is matched with the three-stage cyclone cavity through threads, and the grading air cavity can freely move in the axial direction; and the central fixing rod is fixed with the first-stage cyclone in a screw-thread fit manner. The first-level rotational flow cavity, the second-level rotational flow cavity and the third-level rotational flow cavity are sequentially matched and fixed through threads. And the three-stage rotational flow cavity can r