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Mathematical Problems in Engineering
Volume 2015, Article ID 160641, 8 pages
Research Article

Dynamic Analysis and CFD Numerical Simulation on Backpressure Filling System

1School of Mechanical Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China
2Jiangsu Key Laboratory of Advanced Food Manufacturing Equipment and Technology, Jiangsu 214122, China

Received 27 June 2014; Revised 5 December 2014; Accepted 15 December 2014

Academic Editor: Kit Keith L. Yam

Copyright © 2015 Jing Qian et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


A backpressure filling system is a kind of air type filling system which could be applied to power type, fine or coarse grain, or mixtures with fine and coarse components. The working principle of backpressure filling system was discussed based on fundamental hydromechanics. The research limit values of backpressure were achieved via mechanical analysis. Comparing with the exit velocity of material by theoretical analysis and numerical simulation, the CFD simulation model was confirmed and its related parameters were determined. The CFD numerical simulation shows the relationship between production capacity of packaging machine and backpressure, and the results matched actual operation of the equipment well. Combining with the demand of device capacity, the range of backpressure could be controlled at 8 kPa~11 kPa.