Research Of Automatic Control Of The Raw Grain Winnowing Machine Feeding Agencies

This topic mainly researches a raw grain winnowing machine feedingmechanism and its control system on the bases of research. In order to achieve a betterwinnowing and impurity removal process effect, it is necessary to ensure thecontinuity and uniformity of the material, therefore, the feed device is an importantcomponent of the unprocessed winnowing machine. Recently, with China’s raw grainimpurities increasing and the enterprises of grain processing are becoming bigger andbigger, the original raw grain winnowing machine can’t meet the growing demand ofprocessing capacity and processing effects. There are several traditional mechanicaltype feeding agencies are commonly used at home and abroad, including vibratingfeeder, uniform plate, feed roller, gravity door, and subsequently the roller refiner,Auger uniform material structure. However, there are many inadequacies in thebackground of that raw grain handling capacity and impurity increases. ZhengzhouXinyuan Grain Machinery Co., Ltd. as a research and development platform,launched new raw grain winnowing machine feed mechanism-umbrella valve, so asto solve the problems that our customers encountered in the actual engineering, whiledeveloping raw grain winnowing feed automatic control program. The main researchworks are as follows: The first, design an umbrella valve structure which is used tomeet raw grain winnowing machine feed on the bases of years of practicalengineering experience, while doing out the capacity M-valve opening X graphicsaccording to the geometric relationship, the establishment of a mathematical modelbased on existing engineering data, under the help of Mat lab software. The second,the two control schemes are posed on the base of market demand. Combined withcontrol requirements of device, design the schematic of the control system, work outdetailed steps of the every program, analyze feasibility, design the flow chart ofcontrol on umbrella feed device, laid the foundation for the development of the twocontrol systems. The third, Develop the two control systems which include hardwareselection of programs, the main circuit design, the controlling circuit design, detailedPLC I/O allocation, develop auxiliary relay and time relay function allocation tableand design control ladder program, etc. In addition, in the program two, do the followworks: the settings servo drive parameter, the calculation of the electronic gear and PLC pulse data computing. Two programs are both conducted simulation program,and get reliable test results of the program logic. Develop site commissioningconsiderations, and compiled specific instructions, analysis of the scope of the cost.All this provides the technical basis for the control system to the market.