夹持输送式残膜捡拾机气力脱膜机理研究

Research on mechanism of air force separating residual film for gripping and delivering residual plastic film collector

为防止残膜二次缠绕,以提高脱膜的可靠性,研究并设计一种夹持输送式农田残膜捡拾机构与气力脱膜机构相结合的新型残膜捡拾机。基于气力脱膜机构的气流力场对脱膜效果的影响极大,通过分析影响气力脱膜的因素,确定脱膜所需气流力场的大小和方向,并运用ADAMS软件对脱出残膜在气力作用下的运动轨迹进行仿真,分析不同气流倾角的变化对残膜运动轨迹的影响,确定气流脱膜位置点;然后采用SolidWorks软件对脱膜输送风道和气流出口形状进行几何建模,并利用ANSYS软件对不同气流出口模型进行流场模拟分析,进而确定气流出口形状。结果表明,在气流力场大小至少为1.12N、气流出口倾角为38°、采用圆形气流出口形状、气流速度至少为10.5m/s时,能够很好的满足脱膜所需条件。研究结果可为气力脱膜的残膜回收机械的研制提供参考。

In order to improve reliability of separating residual film and prevent secondary wound of plastic film,it was developed a new type of remnant film collecting machine,which the overall structure including gripping together delivering and air force separating residual film.The airflow force field of air force separating residual film has a huge impact on the effect of separating residual film,by analyzing the factors influencing air force separating residual film,determined the size and direction of the airflow field,and the separating residual film in the air force under the action of the trajectory of movement are simulated by ADAMS software,analyzed the different airflow angle change on the influence of residual film trajectory,finally the air flow to take off the film location point is determined.Then,the geometric modeling of the conveying air duct and the airflow outlet shape is built by using SolidWorks software,and to different air export model by use of ANSYS software conduct the flow field simulation analysis,and then determine the shape of airflow outlet.Results show that the air force field size at least 1.12 N,air export is 38°inclination,using circular blowing port,at least 10.5m/s air velocity when can meet the required conditions to take off the film very well.The results provide the reference for the development of pneumatic membrane off residual film recycling machinery.