一个完整的除尘系统
A complete dust removal system
包括吸尘罩、通风管道、除尘器、风机四个部分。通风管道(简称管道)是运送含尘气流的通道，它将吸尘罩、除尘器及风机等部分连接成一体。管道设计是否合理，直接影响到整个除尘系统的效果。因此，必须全面考虑管道设计中的各种问题，以获得比较合理、有效的方案。
It includes four parts: dust hood, ventilation duct, dust collector and fan. Ventilation duct (hereinafter referred to as duct) is a channel for transporting dusty air flow. It connects the dust hood, dust collector and fan into one. Whether the pipeline design is reasonable or not directly affects the effect of the whole dust removal system. Therefore, various problems in pipeline design must be fully considered in order to obtain a more reasonable and effective scheme.