大米栓塞状气力输送的实验研究

本文叙述了以自动成栓、脉冲气刀控制及单仓压送几种方式形成的大米在水平管道中的栓塞状气力输送的实验研究。在管径50毫米,长约15米的管道中,不同的输送供气条件,所形成的栓状流有不同的压降特性和不同的料气输送比,栓塞的长度及运动速度也有差异。在相同气源压力条件下,单仓压送所形成的栓塞状输送比其它几种有较高的输送效率;而自动成栓的栓塞流,则其输送量对气源压力并不敏感,有较为稳定的大米输送质量流量。

THE EXPERIMENTAL RESEARCH OF THE PLUG PNEUMATIC CONVEYING OF RICE

This article describes the experimental research of the pneumatic convering of rice in a horizontal pipe, which is just formed by the ways of automatic forming plug,pulsating airforce control and pressure pneumatic conveying of single bin.In the pipe 50mm in diameter and 15m in length, there are different pressure drop characteristics ,solid-to-air conveying ratio of the plug folw and the different length and motion velocity of the plug in the conditions of different Conveying air The efficiency of the plug pressure conveying of single bin is the highest in the Conditions of the same air pressure. As to the automatic forming plug flow,its conveying capacity is not sensitve to the air pressure and it possesses very stable conveying quality and flow.