PIPE FOR HOMOGENEOUS FOAM MIXING, FOAM MIXING SYSTEM FOR FIRE EXTINGUISHING AND ITS CONTROL METHOD AND FIRE ENGINE Russian patent published in 2023 - IPC A62C5/02 A62C31/12 B05B7/00 A62C27/00 

FIELD: fire extinguishing.

SUBSTANCE: pipe for homogeneous mixing of foam, to a foam mixing system for fire extinguishing, methods for controlling a foam mixing system for fire extinguishing, and to a fire engine. Wherein, the homogeneous foam mixing pipe comprises: a main homogeneous mixing pipe configured to mix the liquid F mixed with the foam and the foaming medium to form the foam F'; and a foaming medium injection pipe configured to inject the foaming medium into the main uniform mixing pipe, the foaming medium injection pipe having an outlet section penetrating into the inner cavity of the main uniform mixing pipe and extending in the extension direction of the main uniform mixing pipe, moreover, the outlet section has a closed end part and a side wall provided with an outlet for the foaming medium. The foaming medium flows out of the foaming medium outlet with complete mixing with the flowing foam-mixed liquid, and the foaming medium outlet on the side wall is not parallel to the flow direction of the foam-mixed liquid, thereby avoiding the foam-mixed liquid from flowing into the foaming outlet.

EFFECT: improving foaming efficiency and foaming stability.

20 cl 5 dwg, 2 tbl