Study on the Movement Dynamics of Waste Plastic Film in the Separation Chamber
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摘要: 在我国城市生活垃圾中选出了3种主要废塑料薄膜聚乙烯、聚氯乙烯和聚酯塑料作为研究对象。研究了利用雷诺数的不同确定塑料颗粒直径取值范围的方法,得出符合实际颗粒直径的悬浮速度公式,估算出它们的悬浮速度。在分选室中将破碎的废塑料薄膜视为质点,建立了相对精确地运动学和动力学方程。利用MATLAB软件编程,对塑料薄膜运动轨迹进行优化分析,得出影响塑料落点的各个参数的优化值,分别为塑料初始速度为0.122 0 m/s,角度为9.407 0°,气流速度为1.784 7 m/s,角度为6.219 7°。Abstract: The three waste plastic films including Polyethylene, Polyvinyl chloride and Polyester, in which are themain components of our country city life garbage, are selected as the research object. the suspension velocity formula meeting the actual diameter of particle can obtained by using the different Reynolds number to identify theplastic particle diameter range, and then the suspension velocity are calculated. In the separation chamber, brokenwaste plastic film as a particle, established relatively precise kinematic and kinetic equation. By using the MATLAB software programming, the plastic film motion trajectory is optimized and the optimal value of the plastic landing position are obtained. The initial speed and angle, the airflow velocity and angle are respectively 0. 122 0 m/s,9. 407 0� 1. 784 7 m/s, 6. 219 7�
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Key words:
- living garbage /
- waste plastics /
- motion track /
- optimization
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