立式捏合机桨叶截面设计参数分析  

Analyzing design parameters for a blade′s cross-section in vertical kneaders

作　　者：詹小斌[1] 李锡文[1] 邹大军[1] 

机构地区：[1]华中科技大学机械科学与工程学院,湖北武汉430074

出　　处：《华中科技大学学报（自然科学版）》2013年第8期83-86,105,共5页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家重大科学仪器设备开发专项资助项目(2011YQ160002);中央高校基本科研业务费专项资金资助项目(2010MS090)

摘　　要：针对立式捏合机的桨叶设计参数选择问题,提出了桨叶截面设计参数选择的方法.根据立式捏合机混合过程,建立桨叶捏合轮廓的数学模型,分析桨叶截面的影响因素.利用桨叶截面的数学模型,分别计算出不同转速比和捏合间隙参数下的桨叶截面轮廓,研究各参数对桨叶截面的影响.结果表明:存在合理的桨叶建模区域是设计桨叶的基础,而转速比和捏合间隙决定了桨叶建模区域的形状和大小;桨叶捏合间隙影响桨叶的力学性能和混合性能,力学性能和混合性能随桨叶捏合间隙减小而提高,但对制造精度要求提高.在多种可行的桨叶捏合面设计方法中,多捏合面桨叶能够提高混合效率并减少混合时间.The method to choose design parameters of blades′ cross-sections was proposed according to the design of vertical kneader blades. A mathematical model for the blade kneading profiles was built, and the influence factors of the blade rofiles were discussed considering the vertical kneader mixing process. The blade profiles under influences of different speed ratios and kneading gaps were calculated respectively by the mathematical model. The results show that the blade design is based on reasonable blade modeling area, and the shape and size of modeling area are determined by the speed ratio and the kneading gap. The kneading gap affects blades′ mechanical properties and mixing performances. The mechanical properties and mixing performances can be improved by decreasing the blade kneading gap, but the requirements for manufacturing precision increase. In various feasible blades′ kneading surfaces designs,the multiple kneading surfaces′ blade design can be used to increase mixing efficiency and reduce the mixing time.

关 键 词：立式捏合机 桨叶 转速比 捏合间隙 捏合面 

分 类 号：TQ051.7[化学工程]