气吸式割前摘脱联合收割机惯性分离室压力损失的影响因素

鉴于气吸式4ZTL-1800割前摘脱稻(麦)联合收获机的惯性分离室的体积和压力损失一般都较大。该文在前期研究工作基础上，确定以惯性分离室为对象，选择隔板长度、上盖安装高度、分离室长度、分离室入口气体速度为试验因素，以压力损失为评价指标，进行了四因素五水平二次正交旋转组合试验，获得了上述参数对压力损失的影响规律。在保证分离室分离效率的前提下，以分离室压力损失最小为目标，得出了惯性分离室的优化结构参数：隔板长度1180 mm，上盖高度1120 mm，分离室长度1700 mm。研究结果可为惯性沉降分离室的设计提供参考。

Effect of factors on pressure drop in the inertia separation chamber of stripper combine harvester with air suction

The reduction of the volume and airflow pressure drop in the inertia separation chamber of 4ZTL-1800 combine harvester threshing prior to cutting is a constant target. In order to optimize its structure, the effects of structural parameters of the inertia separation chamber and airflow velocities on pressure drop were investigated by the method of quadratic orthogonal rotation combination design test with four factors and five levels. The three structural factors are separation board length, chamber height and chamber length. The effect law of the three factors on pressure loss was obtained. Under the condition of ensuring the separation efficiency with the objective of minimal pressure loss, the optimized structural parameters were obtained as follows: separation board length 1180 mm, chamber height 1120 mm, separation chamber length 1700 mm. These analyses are useful for the design of the inertia separation chamber.