摘要：为了解决将粉体药剂装入细长金属管时, 一次给料太多则会堵塞料管的问题, 实现药剂自动装填过程中给料量的稳定可控, 提出采用振动筛的稳定给药方法。通过分析下药质量与振动频率和振幅的关系, 建立稳定给料量模型, 并进行实验验研究, 验证模型的有效性。结果表明, 下料量主要与振动筛的振幅、振动频率相关。当振动频率为3 Hz, 振幅为20 mm, 下药质量的均值在预期目标内, 且方差较小, 控制效果较好。根据该参数进行下料量控制测试, 下药质量误差约为7%, 并且浮药少。

关键词：粉体材料；装填；细长型金属管；振动筛

Abstract：Powder filling is a very difficult process because of the poor fluidity and small size. The blanking tube will be blocked if powders quantity is too much at a time in automatic filling process.To solve this problem, a stable filling method based on vibrating screen was put forward. The model can guide and optimize the related parameters settings. The experimental study based on the solving parameters was carried out to verify the effectiveness of the model. The result shows that the amount of particles is mainly related to the amplitude and vibration frequency of the vibrating screen. When the vibration frequency is 3 Hz, and the amplitude is 20 mm, the mean value of the dose is within the expected target, and the control effect is better. According to the parameters of the amount of material control test, the error is about 7%, and less float.

Keywords: powder；filling；slim metal pipe；vibrating screen