摘要
对高速切割粉碎机的工作原理进行分析,通过建立三维切割模型,阐述斜角切削理论,设计3种叶轮:直角叶轮、"V"型叶轮和"交错"型叶轮,应用ANSYS软件中的流体动力学Fluent模块,并采用标准k-ε模型及滑移网格法(SM)对3种形式叶轮从噪声、压力、功率消耗方面进行单相流流场分析,找出最佳叶轮类型。结果表明:叶轮转速在3 000～9 000r/min时,"交错"型叶轮较其它形式叶轮产生噪声相对较小;功率消耗相对较小,在粉碎过程中动静刀片间的压力最大,对物料有较好的粉碎效果。
Analyzed the working principal of the high-speed comminution,explained the oblique cutting theory and designed three kinds of impellers by building 3Dcutting model：rectangular impeller,V impeller and crossed impeller.Using the fluid dynamics software FLUENT,the standard k-εmodel and the sliding mesh method（SM）,the single-phase flow fields about them were analyzed the factors of noise,pressure and power consumption,to achieve the optimal type of impeller.The results illustrated that crossed impeller had better crushing effect on materials at the speed of 3 000～9 000r/min,for it had the minimum noise and power comsuption but the highest pressure between the cutter blades.The study will provide the theoretical basis for the further study of high-speed cutting comminution for different materials.
出处
《食品与机械》
CSCD
北大核心
2013年第4期83-87,共5页
Food and Machinery
基金
江苏省科技型中小企业创新资金(编号:BC2007034)
关键词
刃倾角
流场
噪声
压力
功率消耗
bevel cutting angle
flow field
noise
pressure
power consumption
