中文摘要：

活塞推料离心机由于具有生产能力大、功率消耗低以及滤饼固含率大等突出优点,被广泛应用于化学工业、食品、国防工业等部门,而双级活塞推料离心机是使用最多的一种机型。推料频率是双级活塞推料离心机的一个很重要的参数,对离心机的生产能力和分离效果起着决定性的作用。以P-100型双级活塞推料离心机为例,运用FLUENT软件对其建立三维模型并进行数值模拟,研究了推料频率的变化对离心分离效果的影响。结果表明,推料频率越高,离心机生产能力越大,但滤饼含固率会有所减小,实际生产中应综合考虑各方面的因素来确定离心机的推料频率。同时,研究结果还为离心机结构的优化设计提出了一系列依据。

英文摘要：

With advantages such as large capacity of production,low power consumption,big solid content and so on, pusher centrifuges are widely used in chemical industry, food industry, defense industry and others. And the two-stage centrifuge is the most broadly used model. The pusher frequency is a very important parameter for the two-stage pusher centrifuge and it plays a decisive role in the centrifuge production capacity and the separation efficiency. In order to study the effect of pusher frequency on separation efficiency ,the FLUENT software is used to create three-dimensional model and to simulate it, which took a P-100-type two-stage pusher centrifuge for example. The results show that the higher the pusher frequency is, the greater the production capacity will be. In the meanwhile, the filter cake solid content would be reduced. Therefore, various factors should be considered to determine the pusher frequency of the centrifuge in the actual production. The results also provide a series of references to optimizing the design of the centrifuge structure.