论文部分内容阅读
气流分级机分级粒径的不稳定是造成精度下降的根本原因。本文对不均匀气流速度场导致分级粒径沿涡轮轴向的空间波动，湍流脉动导致分级粒径的时间波动，范德华引力产生的假大颗粒导致鱼钩效应而影响细粉的分级以及与一次风、二次风均不发生作用的物料直接进入粗粉，相当于分级粒径为０，而使分级精度明显下降等因素进行了分析，推导出的各影响因素作用的数学方程可用于定性分析。
Airflow classifier grade particle size instability is the root cause of the decline in accuracy. In this paper, the non-uniform velocity field leads to the spatial variation of the graded particle size along the turbine axis. The turbulent pulsation leads to the time variation of graded particle size. The graded particles caused by gravitational attraction of Van der Waals can lead to the fishhook effect and affect the grading of the fine powder, , Secondary air are not directly affect the material into the meal, which is equivalent to the classification particle size of 0, while the classification accuracy was significantly reduced and other factors were analyzed, the deduction of the various factors that affect the role of mathematical equations can be used for qualitative analysis.