在传统的键式逐稿器分离装置分离原理及工作条件的基础上，研究了附加气流后键式逐稿器的工作原理及受力特点，从而确定了其工作条件，为附加气流分离性能的研究，提供了理论依据。 Based on the separation principle and working conditions of the traditional key-type straw divider, the working principle and force characteristics of the keyed straw-type extractor after the additional airflow were studied, and the working conditions were determined. Research, provided a theoretical basis.