| Postgraduate:Liang xifeng(Agricultural Mechanization Engineering)Directed by Prof. : Wang chunguangA great deal of data of working function parameters of milking machine were obtained respectively by means of measurement and analysis on 9JH- I piston milking trolley .Based on these testing results ,a study on milking function analysis has been finished and some conclusions were obtained, such as the relevant changing laws between vacuum~. pressure of pulsation chamber of teat cup and piston displacement of vacuum pump ,the relationship between pulsation ratios ~. the maximum and the minimum vacuum phase ratios and diameters of ball valves on vacuum pump cylinder as well as .At the same time ,the effect of diameters.~, mass and material of ball valves to the function parameters were presented along with the effect of different diameters composing of ball valve in milking pail and in vacuum pump cylinder, which will provide essential basis for optimization of design. |
