论文部分内容阅读
欲减小超细气流分级机的分级粒径,就必须提高转子系统的转速,目前转子转速已经达到4500r/min左右。由于转子系统主轴较长、转速较高,所以应对其进行动力学设计,使其转动频率远离其固有频率,以便提高转子系统的稳定性。除此之外,还必须提高转子系统的加工精度,对其进行严格的动平衡试验。只有这样才能使转子在受到一定的非均匀磨损之后,整个转子系统仍能处于稳定的状态。笔者在对转子系统进行适当的简化之后,对其各阶固有频率进行了计算,并根据计算结果确定了转子系统的最高工作频率。
To reduce the graded size of the ultrafine air classifier, it is necessary to increase the speed of the rotor system. At present, the rotor speed has reached about 4500 r / min. Due to the longer spindle length and higher rotational speed of the rotor system, the rotor system should be designed so that its rotational frequency is far from its natural frequency in order to improve the stability of the rotor system. In addition, it is also necessary to improve the machining accuracy of the rotor system and carry out rigorous balancing tests. Only in this way can the rotor be subjected to certain non-uniform wear, the entire rotor system can still be in a stable state. After the appropriate simplification of the rotor system, the author has calculated the natural frequency of each stage and determined the maximum operating frequency of the rotor system according to the calculation results.