SELF-SUSTAINED EQUIPMENT FOR PREPARATION OF FIRE-EXTINGUISHING COMPOUND Russian patent published in 1995 - IPC

FIELD: fire fighting in woods. SUBSTANCE: self-sustained equipment for preparation of viscous water fire extinguishing compound has engine-driven pump, charging hopper, ejector and static mixer. Static mixer installed at ejector output has screw turbulizing members with flat sections on ends arranged along member axis. Flat sections are provided with slots whose length is equal to half of length of straight section; every two screw members differing in direction of swirling are arranged together, their straight sections get into slots of opposite members overlapping in length their straight sections and forming pair (section) separated by spacer ring from adjacent pair (section) in length of mixer. Ratio of length of ring to diameter of member is within 0.6 and 2.0, and number of pairs of members (sections) in length of mixer is within 3 and 5. EFFECT: enlarged operating capabilities. 4 dwg