Abstract The feeder is a key component of a pneumatic conveying system, and it is the largest component that causes pressure loss. In this paper, a negative-pressure auto-feeding system was designed. Using the orthogonal design method, the effects of the airflow velocity, particle size, and feeding mass on the pick-up mass of an auto-feeding system were investigated experimentally. Based on a range analysis, the serial number for the importance of each factor to the pick-up mass was determined. The pressure in the horizontal pipeline was obtained from pressure transmitters, and the effects of the airflow velocity, particle size, and feeding mass on the airflow pressure of the auto-feeding system were investigated. By normalizing the maximum pressure signal and the material pick-up masses, the relationship between the flow field pressure signal and the crushed stone particle pick-up mass was obtained.

中文翻译：

---

水平管道中碎石颗粒的拾取分析

摘要 给料机是气力输送系统的关键部件，是造成压力损失最大的部件。本文设计了一种负压自动上料系统。使用正交设计方法，实验研究了气流速度、粒度和进料质量对自动进料系统的拾取质量的影响。基于范围分析，确定了每个因素对拾取质量的重要性的序列号。水平管道中的压力由压力变送器获得，并研究了气流速度、粒径和进料质量对自动进料系统气流压力的影响。通过归一化最大压力信号和材料拾取质量，