整车环境下洗扫车气力输送系统流场特性研究

Research on Flow Field Characteristics of Pneumatic Conveying Systemof Sweeping Vehicle under Complete Vehicle Environment

道路洗扫车凭借其清扫效果好,清扫成本低等优势,成为了道路环卫的主要工具,在城市道路清洁方面发挥着重要的作用。其中,气力运输系统是洗扫车最关键、最核心的组成部分,其结构设计的好坏直接影响着洗扫车的工作性能。运用计算流体力学(CFD)方法对整车环境下洗扫车气力输送系统进行了气相流场仿真,并对吸嘴结构进行了设计与改进,深入讨论了不同吸腔高度、不同吸管直径对洗扫车气力输送系统流场特性的影响,实现了流场分布的合理化。仿真结果对提高洗扫车清扫效率及吸尘性能有重要的指导意义。

With its advantages of good cleaning effect and low cleaning cost,road sweeper has become the main tool of road sanitation,playing an important role in urban road cleaning.Among them,the pneumatic conveying system is the most critical and core component of the sweeper,and its structure design directly affects the working performance of the sweeper.In this paper,the computational fluid dynamics(CFD)method is used to simulate the flow field of the pneumatic conveying system of the suctionsweeper under the vehicle environment.The structure of suction was designed and improved.The influence of different height of suction chamber and diameter of suction pipe on flow field characteristics of pneumatic conveying system was discussed in detail.The simulation results have important guiding significance for improving the cleaning efficiency and dust collection performance of the sweeper.