Research On Key Node Technology In Extraction Of Plant Trace Components

The wide application of plant trace components makes efficient extraction technology a hot research content.The key node technologies involved in the extraction of plant trace components have become the focus of attention in recent years.This topic originated from the extraction production line independently developed by Shenyang Yuanjian Biotechnology Co.,Ltd.,and carried out research on its missing links,research on the feeding link.Feeding refers to the replacement of plant raw materials in the stuffing tank.The research method is to help realize the automation of the feeding link by completing the design of the mechanical structure of the feeding equipment,so as to further realize the research on the key node technology of feeding.This project firstly participated in the production process of plant trace component extraction,summarized the problems of manual feeding during the extraction process,and then concluded that the feeding equipment should have six functions,such as tightening the cap bolts of the stuffing tank.Then,determine the feeding equipment for sub-module design,and further summarize the functional structure of each module according to the actions that each module should achieve,so as to prepare the prerequisite for the structural design of the feeding equipment.Before the structural design,this project completed the modeling analysis of the bolt connection process of the stuffing tank lid.The analysis content includes the analysis of the pre-tightening force required for the bolt connection of the tank cover.The analysis of the pre-tightening force control method is completed,the torque control method is determined to be adopted,and the mathematical relationship model between the pre-tightening force and the tightening torque is established.Finally,the reliability analysis of the tank cover bolts is completed.The mechanical structure design of the feeding equipment is developed on the basis of innovation based on fixed working conditions after combining the design features of a large number of existing equipment.At present,the design of its mechanical structure has been completed,and the rationality of the movement of the feeding equipment has been verified based on the motion simulation software.Completed the design of the pneumatic transmission system of the feeding equipment.Finally,based on the finite element analysis software ANSYS Workbench,the optimization design of the structure is carried out.The specific analysis content is the statics analysis of the beam mechanism in the equipment and the modal analysis of the stirring shaft.The analysis found that the cross-beam mechanism was too deformed and did not meet the stiffness criterion,so it was optimally designed.The optimization result is that the strain is reduced by 0.012779,which is 21.5%.The mass is reduced by 7.7249 Kg,a decrease of 8.2%.According to the modal analysis of the stirring shaft,the first-order natural frequency is 18.116 Hz,which is higher than its highest rotation frequency of 2.5Hz,which meets the design requirements and does not need to be optimized.