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Design and Simulation of a tobacco flavoring feeding machine

Author: WangDongLiang
Tutor: ZhouKeDong
School: Nanjing University of Technology and Engineering
Course: Mechanical Design and Theory
Keywords: Tobacco Machine Casing and Flavoring CFD Numerical Simulation of Flow Field
CLC: TS43
Type: Master's thesis
Year: 2011
Downloads: 80
Quote: 1
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Abstract


The casing and flavoring is a very important processing procedure of the cigarette production because it is the guarantee of the cigarette smoking quality and style, and the performance of the casing and flavoring machine is the key to the physical change (such as the breakage percentage, temperature and humidity) and the uniformity of the casing and flavoring as well as the use efficiency of flavor liquid during the process. In this article, a detailed investigation of the Germany KAS widely used presently was made, and its defects were analyzed. Based on the above work, a new type scheme of vertical air mixing was proposed, and the complete device structure was designed. Besides, a test prototype was designed and made, and the feasibility of the air mixing manner was simulated and verified.The specific works as follows:(1) Design of overall schemeA new type of vertical air mixing program was proposed based on the researches on the traditional mixed machinery and food processing machinery, the detailed function parts was designed, mainly including the in-out tobacco system, cylinder, air distribution system, casing and flavoring system and hot air circulation system. Additionally, the general parameters of the machine were calculated with fluidized bed principle and pneumatic conveying theory.(2) Design and researches on test prototypeA test prototype was designed and manufactured, and the corresponding experiments were carried out. The feasibility of the air mixing manner was verified. A contrast of two different orifices was made based on the simulation and analysis of the flow field. Besides, an analysis of poor bubble characteristics was made based on the problems found in the experiment, and an improvement of the air distribution room was made and the effect of the improvement was proved both in the theoretical calculations and experiments.(3) Simulation of the flaky particles-air two-phase flow fieldThe DPM model was used for the researches on flaky particles-air two-phase flow field as there was no mature theory for it. The shape factor was used to correct the calculation, and the orbit of the flaky particles in the air flow field was determined with double coupling, the simulation result was in good agreement with experiment result.In this paper, theory and experimental studies are carried out on the feasibility of the new type of vertical air mixing manner, the results showed that it has feasibility. The studies established the foundation for the development of the engineering prototype.

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CLC: > Industrial Technology > Light industry,handicrafts > Tobacco Industry > Machinery and equipment
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