Assembled adjustable oxygen-enriched combustion device

The utility model discloses an assembled adjustable oxygen-enriched combustion device, and relates to the technical field of oxygen-enriched combustion devices. The input end of the combustion furnace body is fixedly connected with a flue, the flue is provided with an oxygen heat exchanger and a gas heat exchanger, the input end of the oxygen heat exchanger is fixedly connected with an oxygen pipe, the input end of the oxygen pipe is fixedly connected with an oxygen generator, and the input end of the gas heat exchanger is fixedly connected with a gas pipe. The two sets of rotating assemblies can drive the corresponding sealing blocks and the circular truncated cone blocks to rotate respectively, so that each sealing block is installed in the adjacent circular rings, the sealing effect is guaranteed, and coal gas and oxygen are prevented from leaking; the two rotating assemblies and the two lifting assemblies only need to be started at the same time, then the two rotating assemblies drive the corresponding se