Pneumatic spiral mixing injection machine

The utility model relates to a pneumatic spiral mixing injection machine which comprises a pneumatic spiral conveying device, a conveying pipe, a liquid material mixing device and a nozzle. The pneumatic spiral conveying device comprises a motor, a coupler, a hopper, a material inlet, a mixing chamber, a compressed air port, a material outlet and a spiral barrel. The motor is connected with the spiral barrel through the coupler, the hopper is installed on the spiral barrel through the material inlet, the mixing chamber is connected with the conveying pipe through the material outlet, the compressed air port is arranged in the tail end of the spiral barrel, and the upper portion of the compress air port corresponds to the mixing chamber in the vertical direction. The pneumatic spiral mixing injection machine has the advantages of being small in size, low in cost, simple in structure and convenient to operate and maintain, solving the problem that when a dry-type concrete injection machine operates, a large amo