统收式采棉机分离系统的设计与数值模拟

Separation System Design & Analysis of Closed-type Cotton Picker

针对统收式采棉机采摘棉含杂率高的特点,利用现代设计方法,设计了一种机械和气力相结合的分离系统;利用CFD方法对气力分离室进行数值模拟,通过改变补风口进风角度、补风口风速以及补风口与入料管底座距离等条件,分别对室内流场进行模拟,对比分析得出影响结果为:补风口风速影响最大,补风口进风角度次之,补风口与管底座距离最小。

With the help of modern design method,a separation system whose separated method Combinated with Machinery and wind power is designed to reduce high impurity rate of cotton picked by closed-type cotton picker.In order to explore the influence on flow field of the room,the wind power separated room is simulated on the numerical value by the method of CFD by the means of changing the condition of angle,velocity & distance from the materiel conduit pedestal of supplementary flow inlet.The result figures out: the velocity has the most important factor to influence flow field,the angle is less than the velocity as well the distance is less than the angle.