Investigation And Improvement Of Disk Pneumatic Feeding System

Lower running cost, agile arrangement, and fitting for horizontal, vertical or curvilinear feeding are the particular characteristics of Disk Pneumatic Feeding System. Meanwhile, it also plays an important role in fluff, decontamination, dust extraction, dryness and cooling. On account of these advantages, disk pneumatic feeding system was generally adopted by domestic and foreign tobacco enterprises. But in the operation of disk pneumatic feeding system, component re-isolation was caused by insufficient breakage of cut tobacco in wire feeding process and resegregation in vibrating disk. The filling power of cut tobacco was depressed with these issues, caused the fluctuation of intrinsic quality of cigarette. Some issues exit in the operating procedure of disk pneumatic feeding system were figured out in this thesis, and its structure was investigated and improved. New fuctions of screen sizing and dust extraction were added on the basis of retain the original function, and layered degradation of cut tobacco was reduced to some extent. The cost and time were largely reduced as technology based on virtual data prototype was adopted in this thesis.Vibrating disk, key part of disk pneumatic feeding system, was the emphasis of this thesis, its structure was investigated and improved, and its key parameter was optimized too. Besides the circular motion, the forced vibration under excited force of drive system was also done by vibrating disk in the operating procedure. Considering the vibrating influence of vibrating disk to the whole system, kinetic analysis and calculate kinetic parameter of vibrating disk were adopted, and the digital pattern of vibrating disk was guided into ANSYS soft ware through data interface to analyse the finite element modal of vibrating disk, then the chart of first fifteen steps' natural frequency and vibration mode was obtained. The eighth step's vibration mode of vibrating disk was relatively idealer based on the comparison of model parameter. The natural frequency of eighth step is f8=46.52 Hz. The mechanical property of vibrating disk has been remarkably affected by its natural frequency. The results of analysis provided reference for choosing key parameter of electromotor and vibrating disk.