Efficiency and mechanism of fire suppression through pneumatic sandblasting firefighting

With the increasing demand for improved firefighting performance, there is a need to explore innovative approaches. The study examines the injection of sand in pneumatic fire extinguishers to create a pneumatic sandblasting fire extinguisher that can enhance firefighting performance. A self-built pneumatic sandblasting fire extinguishing experimental platform was utilized to investigate the distribution of sand, efficiency of fire extinguishing, and mechanism of fire suppression. The study concludes that sand can be effectively accumulated at a distance of 1.5–2.34 m from the outlet, and the use of a pneumatic sandblasting fire extinguishing machine can considerably reduce the extinguishing time. The primary mechanism behind pneumatic sandblasting fire extinguishing involves the collaboration of airflow and sand. The research suggests exploring the use of sand in pneumatic fire extinguishers to improve firefighting performance in the early stage of forest fires.