Effects of Insertion Length of Suction Nozzle and Injection Pipe on Pneumatic Conveying Characteristics of Suction Nozzle with Injection Pipe

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  • Ishiharada Shuichi
    Graduate School of Science and Engineering, Kagoshima University
  • Fukuhara Minoru
    Graduate School of Science and Engineering, Kagoshima University
  • Takamatsu Tomoteru
    Graduate School of Science and Engineering, Kagoshima University Mitsubishi Heavy Industries, Ltd.
  • Murakami Yu
    Graduate School of Science and Engineering, Kagoshima University
  • Ishigai Tetsuya
    Graduate School of Science and Engineering, Kagoshima University
  • Nakamura Yu
    Graduate School of Science and Engineering, Kagoshima University
  • Nakao Mitsuhiro
    Graduate School of Science and Engineering, Kagoshima University

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Other Title
  • 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吸込みノズル深さおよび吹出し管挿入長さの影響
  • 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 スイコミ ノズル フカサ オヨビ フキダシ カン ソウニュウ ナガサ ノ エイキョウ

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Abstract

<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 powder and particles. In this paper, we examined the effects of the insertion length of the suction nozzle and the injection pipe, by attaching the injection port on the outer part of the suction nozzle. The loading ratio for both cases (the injection ports positioned at the center and outer part) was not affected by the insertion length of the suction nozzle. However, the loading ratio incretion rate by the insertion length of the injection pipe was larger when the injection port was attached on the suction nozzle’s outer part. From the perspective of the nozzle efficiency analysis, it was concluded that the outer injection port can be used adequately during the high flow rate ratio range.</p>

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