李芳环 刘洋

摘 要： 针对传统饲料输送系统存在饲料输送能力差，系统能耗高的弊端，设计数字化连续式密相饲料气力系统。设计数字化连续供料装置，采用数字操控改变叶片转速实现对饲料供给量的调整；通过控制输送管道中主管和辅管的气体量实现对饲料输送管道的疏通；设计料气分离装置通过气固分离将空气与饲料分离，使饲料有效保存并降低空气污染。系统软件通过降低供料器上压和下压处压力差，降低供料器的空气漏气量空对系统的饲料供应能力影响。根据实验结果可知，所设计系统的饲料供给能力强，系统的能耗低，具有良好的实际应用效果。

关键词： 数字化； 饲料厂； 气力系统； 供料器； 输送管； 料气分离

中图分类号： TN711.5?34； TQ051 文献标识码： A 文章编号： 1004?373X（2018）20?0182?05

Abstract： As the traditional feed transporting system has the disadvantages of poor feed transporting capability and high system energy consumption， a digital continuous dense?phase feed pneumatic system is designed. The digital continuous feeding device is designed. The adjustment of feed supply amount is realized by adopting digital control to change the revolving speed of blades. The dredging of the feed transporting pipeline is realized by controlling the gas amount in the main pipe and auxiliary pipes of the transporting pipeline. The material?gas separation device is designed to separate the air from the feed by means of gas?solid separation， so as to store the feed effectively and reduce air pollution. For system software， the influence of the feeder′s air leakage amount on the system′s feed supply capability is reduced by reducing the pressure difference between the upper pressure and lower pressure of the feeder. The experimental results show that the designed system has strong feed supply capability and low energy consumption， which has a good practical application effect.

Keywords： digitization； feed plant； pneumatic system； feeder； transporting pipeline； material?gas separation

气力输送将空气动力作为输送动力，使各种物料在管道中流通。气力流动通过管道两端的压力差来提供管道内物料流通所需的能量。气力输送的实现需要一定的必要条件，如气体源或空气、物料输送管道和输送物料的分离设备。气力输送装置分为吸送式和压送式两种，其应用领域广泛，如橡胶业、冶金、化工以及农业等[1]。数字化技术不断进步带动农业领域中饲料厂的气体输送能力不断进步，数字化的机械设备可显著提升系统的运行效率。本文在国内外关于气力输送研究成果的基础上，设计数字化连续式密相饲料气力系统，提升系统的饲料输送能力，降低系统能耗减少对环境的污染。……