Design And Dynamic Characteristics Of The Periodic Revolving Location Machine For Distiller’s Yeast

The quality of the wine is in direct relation to the quality of distiller’s yeast.The efficiency and stability of machine for distiller’s yeast, the key equipment in pressing process of distiller’s yeast, are significant to the quality of distiller’s yeast. However there is no practical way to solve the problems of machine for distiller’s yeast in pressing process, such as error locations of feed boxes, big clearances between hammers and feed boxes, unsteady movement of lifting system. The thesis is based on“ the first new product ”project, which is one of the transformation and extension projects of scientific and technological achievements in Shanxi province. In this paper, the theoretical analysis,simulation and experiment are combined to design the efficient and steady machine for distiller’s yeast in which the location accuracy of feed boxes is improved, the clearance between hammers and feed boxes is reduced,acceleration of lift system is reduced. The research findings of this paper provide theory and technique supports to making high-quality distiller’s yeast.A kind of the periodic revolving location machine for distiller’s yeast isdesigned on the basis of considering the work flow of machine for distiller’s yeast and the structures of all kinds of machines for distiller’s yeast. The location accuracy of feed boxes is improved greatly by using a intermittent movement equipment named cam indexer. The hydraulic system is used to control the lifting system movement to make the motion flexible. The coordinate motion between the lifting system and the revolving system is achieved by the use of electricity-control system.The finite element analysis of the key components of the periodic revolving location machine for distiller’s yeast is studied by finite element software ANSYS Workbench in this paper. According to the static analysis of the rack system, optimization of the parameter of the rack system is proceeded. The mass of structure is reduced and the deformation is decreased after optimizing. The modal analysis of lifting system is performed to get natural vibration characteristic. The sympathetic vibration does not happen after analysis of lifting system movement.To investigate the dynamic characteristics of the lifting system, models of machine construction of lifting system and hydraulic system is established by using software ADAMS and software AMESim separately. The mechanicalhydraulic co-simulation of the lifting system can be operated, so that the real-time transmission of information between the mechanical structure and the hydraulic system come true. Motion parameters of the lifting system can be obtained by the mechanical-hydraulic co-simulation. Though the analysis of themotion parameters, it can be got that the phenomenon of insufficient oil supply caused the vibration of lifting system as gravity of its own. In response to this study, two improved methods including increasing the quantity of hydraulic oil delivering in hydraulic system and adding one-way restrictive valves in the hydraulic system are proposed. After the co-simulations of those two methods,the result can be got that increasing the quantity of hydraulic oil delivering in hydraulic system is not the efficient way to solve this problem, but adding one-way restrictive valves in the hydraulic system is.To verify the correctness of the analysis, field testing focuses on the vibration research of the lifting system is conducted. The time-pressure curve graphs and the time-flow rate curve graphs of hydraulic ram are acquired through testing the hydraulic system by using portable test instrument MultiSystem5060. The acceleration curve graphs of the lifting system are acquired through testing mechanical structure of the lifting system by using vibration test instrument DASP V10. Through field testing of two improved methods, it can be found that the results between the field testing and the simulation are similar.It proves the correctness of the co-simulation. It provides convincingly basis for the design of the periodic revolving location machine for distiller’s yeast as well.