Effect of Injection Port Position on Pneumatic Conveying Characteristics of Suction Nozzle with Injection Pipe

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  • 吹出し管を備えた吸込みノズルの 空気輸送特性におよぼす吹出し口位置の影響
  • フキダシ カン オ ソナエタ スイコミ ノズル ノ クウキ ユソウ トクセイ ニ オヨボス フキダシ グチ イチ ノ エイキョウ

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<p>In the vacuum system of pneumatic conveying, the authors have proposed that a suction nozzle equipped with an injection pipe at the center would provide a highly dense, highly efficient method of transporting powders and particles. In this paper, we examined the effect of injection port positions arranged at the inside and outside of the suction nozzle. For the first experimental condition, the effect of the injection port positions was observed with the injection velocity made equal. As a result, it was found that the loading ratio was hardly influenced by the injection port position. For the second condition, the effect of the injection velocity was clarified with the injection pipe attached to the outside of the suction nozzle. It was revealed by the visualization of particle behavior near the suction nozzle that the characteristics of the flow depend on the injection flow rate, not the injection velocity.</p>


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