NOVELTY - A municipal domestic waste continuous reducing atmosphere microwave heating low-temperature cracking furnace comprises charge material and garbage gas exchange mechanism composed of first grade feeder and gas exchange bin, carbonized material collecting bin, carbonized material collecting mechanism composed of material collecting hopper and material discharging machine, and host machine body part composed of host machine barrel (H1), power spindle (H2), spindle power wheel (H3), spindle power motor (H4) and frame (H5).    USE - Municipal domestic waste continuous reducing atmosphere microwave heating low-temperature cracking furnace.    ADVANTAGE - The municipal domestic waste continuous reducing atmosphere microwave heating low-temperature cracking furnace has low energy consumption and emission amount of dust, solves risk on generating nitrogen oxides and dioxin, achieves zero emission of nitrogen oxides and dioxin, improves cracking efficiency, promotes resource utilization level of cracking recycling materials of garbage and provides harmless treatment process.    DETAILED DESCRIPTION - A municipal domestic waste continuous reducing atmosphere microwave heating low-temperature cracking furnace comprises charge material and garbage gas exchange mechanism located on host machine barrel (H1) of machine body part of host machine which is composed of first grade feeder and gas exchange bin, garbage pre-heating and cracking vapor output bin, garbage water evaporating and temperature improving bin, garbage main cracking bin, cracking material carbonizing bin, carbonized material collecting bin which is formed in host machine barrel between fourth clapboard and bottom face of host machine barrel, carbonized material collecting mechanism which is composed of material collecting hopper and material discharging machine, and host machine body part which is composed of host machine barrel, power spindle (H2), spindle power wheel (H3), spindle power motor (H4) and frame (H5). The upper end of host machine barrel is round barrel with conical charge port. The two upper and lower ends of host machine barrel are seal structure. The power spindle is supported at center of host machine barrel via bearing and separately fixedly provided with group of material push rods on corresponding axis of cracking vapor output bin, garbage water evaporating and temperature improving bin, garbage main cracking bin and cracking material carbonizing bin. The power spindle and spindle power motor form transmission connection via spindle power wheel. The host machine barrel and spindle power motor are fixed on frame. The upper end face of host machine barrel is separately provided with controllable cracking vapor outlet and reducing gas outlet. The lower end of host machine barrel is provided with reducing gas inlet. The host machine barrel is internally provided with first clapboard, second clapboard, third clapboard and fourth clapboard which separately divide host machine barrel into cracking vapor output bin, garbage water evaporating and temperature improving bin, garbage main cracking bin and cracking material carbonizing bin. The outer wall of host machine barrel is provided with multiple groups of microwave emitting sources in which every group is designed as one group according to radial profile of host machine barrel and separately corresponding to cracking vapor output bin, garbage water evaporating and temperature improving bin, garbage main cracking bin and cracking material carbonizing bin. The center of first clapboard and power spindle or ex-circle of first clapboard and inner wall of host machine barrel, center of second clapboard and power spindle or ex-circle of second clapboard and inner wall of host machine barrel, center of third clapboard and power spindle or ex-circle of third clapboard and inner wall of host machine barrel and center of fourth clapboard and power spindle or ex-circle of fourth clapboard and inner wall of host machine barrel have material pass clearance. The material push rod is provided with group of material push scraping plates. The first grade feeder and gas exchange bin separately provided with reducing gas outlet and charge material reducing gas inlet communicate with internal chamber of host machine barrel via upper end face of host machine barrel. One end of material collecting hopper communicates with carbonized material collecting bin through bottom face of host machine barrel. The other end of material collecting hopper communicates with material discharging machine.    DESCRIPTION OF DRAWING(S) - The drawing shows a cross-sectional view of the municipal domestic waste continuous reducing atmosphere microwave heating low-temperature cracking furnace.    Host machine barrel (H1)    Power spindle (H2)    Spindle power wheel (H3)    Spindle power motor (H4)    Frame (H5)