The internal flow path of the internal mixing air spray pump head is the liquid path, the outer flow path is the sonic atomization gas path, the middle flow path of the three-flow path gas-liquid-gas critical air spray pump head is the liquid path, and the inner flow path is the primary subsonic gas path , The outer flow path is the supersonic secondary atomization gas path. The ultra-fine spray pump head experimental system is divided into 4 parts: water circuit, air circuit, nozzle test gun body, and liquid mist test system.
The atomized particle size distribution is measured with a 2200 Malvern laser particle size analyzer. The particle size distribution adopts R one ruler distribution. When a ruler is used, the computer can fit the original data to the table and directly give X and N in the distribution equation. Two parameters. In the experiment of the internal mixing air spray pump head, the experimental system only opens the external air and liquid channels. When the three-flow critical air spray pump head is tested, the internal and external air and liquid channels participate in the work at the same time.