Digital Simulation Research On Grinding Capability Of The Vertical Roller Mill Based On Virtual Prototyping

In the past few years, because of compactness structural, high energy efficiency, excellent drying capacity and facile operation, the vertical roller mills became increasingly dominant for grinding raw materials for the cement industry and for grinding coal dust. Today with the vertical roller mills largely used, research on processing of grinding, become the focus of the research. Traditional research method not only consumes a large number of manpower, material resources, longer research cycle, but also affects the vertical roller mill's normal production. The thesis makes the lead in applying virtual prototyping to bear on the research of vertical roller mill, establishes the digital prototyping of the roller, and makes the mechanical system dynamic simulation analysis on the roller of a vertical roller mill. According to the characteristic of domestic and international model machine of vertical roller mill, the thesis designs a model machine, which can carry on experimental analysis about the mechanism of grinding and the grinding characteristics of column form roller, conic roller, drum form roller. The main points of the thesis are listed below.Combined with a cement company of SHANDONG province, the working characteristic of the vertical roller mill is analysed, and the method for dynamic and kinetic simulation on the vertical roller mill by using virtual prototyping is put forward. Assembly model of the roller is built in the Unigraphics environment, and the model is imported to the simulating environment by using the data interface between Unigraphics and ADAMS.The constraints, loads and motions are added to the model in ADAMS simulation software, and the virtual prototyping of the vertical roller mill is established. The simulation analysis is carried on by taking specific grinding force and table speed as input variables. According to the simulation results, have summarized the specific grinding force and table speed to influence of Polysius vertical roller mill of grinding processing characteristics, and the result has directive significance to the real condition of production. Summarizing the application characteristic of the model machine both at home and abroad, according to the Grinding mechanism and processing technology, the thesis designs a model machine, which can carry on experimental analysis about the mechanism of grinding and the grinding characteristics of column form roller, conic roller, drum form roller, and have established better foundation for follow-up research.