Double-shaft air injection rotary-spray type mixing pile machine

The utility model discloses a double-shaft air injection rotary-spray type mixing pile machine which comprises a pile frame, a power head (1), mixing shafts (2), air spray nozzles (9), an air compressor (10), a main air conveying pipe (11) and branch air conveying pipes (12), mixing heads (7) are fixedly provided with slurry spray nozzles (8) and the air spray nozzles (9), the air spray nozzles (9) are combined outside the slurry spray nozzles (8) in a sleeved mode, the air spray nozzles (9) are communicated with the branch air conveying pipes (12), and the branch air conveying pipes (12) are communicated with the main air conveying pipe (11) and the air compressor (10). According to the double-shaft air injection rotary-spray type mixing pile machine, concrete for forming piles ca be compact and even, the pile forming quality is good, the pile forming depth can be enlarged, piles can be formed in soil bodies with large hardness, construction efficiency can be improved, the construction period can be shortened, and machine shift cost and labor cost can be saved.