Fully integrated compressed air foam fire extinguishing device

The utility model discloses a fully-integrated compressed air foam fire extinguishing device which comprises a base, and an electric control assembly, a gasoline engine assembly, a fire pump assembly, a foam pump assembly and a screw air compressor conveying assembly which are integrally mounted on the base, wherein the gasoline engine assembly drives the fire pump assembly to operate so as to convey water from a fire hydrant into the mixing pipe; the gasoline engine assembly drives the foam pump assembly to operate, so that the foam pump assembly conveys foam liquid in the foam liquid box into the mixing pipe, and the foam liquid in the mixing pipe is mixed with water in proportion to form mixed liquid; the proportioning mixer is communicated with the mixing pipe, so that the mixed liquid in the mixing pipe enters the proportioning mixer; the gasoline engine assembly drives the screw air compressor conveying assembly to operate, so that compressed air is cooled through the heat exchanger assembly and then co