高精度微量螺旋给料的设计研究
沈祥兵，高超，杨盼，程磊磊，王小丽
（湖北省地质勘查装备中心，湖北 武汉 430034）
摘要：针对光谱分析实验室给料系统的微量和高精度（100±0.3 mg）的特点，提出了利用螺旋叶片截面为圆形的螺旋轴进行微量给料，并根据行业要求和给料效率量化分析了螺旋叶片截面为半圆形的螺旋轴的螺距、螺旋直径。经迭代演算，设计出高精度微量螺旋给料仪。同时通过PLC软件编程，实现了给料系统和称量系统的通讯与控制，并在此基础上实现了高精度给料及其自动化。通过软件自学习控制，极大拓展了本给料系统的使用范围。
关键词：螺旋；高精度；微量；给料；圆形螺旋叶片截面
中图分类号：TH122 文献标志码：A doi：10.3969/j.issn.1006-0316.2021.07.008
文章编号：1006-0316 (2021) 07-0052-08
Design of High Precision Micro Screw-Feeder
SHEN Xiangbing，GAO Chao，YANG Pan，CHENG Leilei，WANG Xiaoli
( Hubei Institute of Geological Prospecting Equipment, Wuhan 430034, China )
Abstract：According to the spectral analysis of laboratory feeding system and the characteristics of high precision (100±0.3 mg), the paper proposes a special type of screw shaft using circular spiral blade section for screw feeding. According to industry requirements and the feeding efficiency, quantitative analysis of the semicircular spiral blade section and its screw pitch diameter was carried out. After iterative calculation, a high precision micro screw feeder is designed. At the same time, the communication and control of the feeding system and the weighing system are realized through PLC software programming, and the high precision feeding and its automation are also realized. Through self-learning control, the application scope of the feeding system is greatly expanded.
Key words：spiral；high precision；trace；the feeding；circular spiral blade section
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收稿日期：2020-09-30
基金项目：湖北省地质局2020年科技项目（KJ2020-38）
作者简介：沈祥兵（1974－），男，湖北红安人，硕士，高级工程师，主要从事机械设备研发工作，E-mail：19721212@sina.com。
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