焊接烟尘治理，选对设备是第一步。目前市场上主流的焊烟除尘设备分为两大类——移动式焊烟净化器和集中式焊烟净化系统。两者虽然净化原理相同，都是借助滤筒表层过滤将焊烟颗粒拦截，但在风量、外形、滤芯配置上存在显著差异。

The selection of the right equipment is the first step in the treatment of welding fumes. At present, the mainstream welding smoke dust removal equipment in the market is divided into two categories - mobile welding smoke purifiers and centralized welding smoke purification systems. Although the purification principles of the two are the same, both use the surface filtration of the filter cartridge to intercept welding smoke particles, there are significant differences in air volume, appearance, and filter element configuration.

移动式焊烟净化器是单机形式，体积小巧，底部装有脚轮，可灵活移动。 这类设备适合处理作业面积小、产尘量少的点焊场景。但其局限也很明显：只能安放1至2个滤芯，有效过滤面积小，无法处理大产量的焊接烟尘；风量通常不超过4000m³/h，为保证烟尘捕捉效果，搭配的吸气罩面积不能太大。因此，移动式设备更适合工位分散、工作量不饱和的场景。

The mobile welding smoke purifier is a standalone form, with a compact size and bottom equipped with casters that can be flexibly moved. This type of equipment is suitable for handling spot welding scenarios with small operating areas and low dust production. But its limitations are also obvious: it can only accommodate 1 to 2 filter elements, with a small effective filtering area, and cannot handle large amounts of welding fumes; The air volume usually does not exceed 4000m ³/h. To ensure effective smoke and dust capture, the area of the accompanying suction hood should not be too large. Therefore, mobile devices are more suitable for scenarios where workstations are dispersed and workload is not saturated.

集中式焊烟净化系统则由烟尘捕捉、管道、除尘主机和风机四部分组成。 这套系统需要工人安装完毕后才可使用，安装之后不可移动。其最大特点是各部件均可根据车间实际情况定制：滤芯数目根据焊烟量确定，工位数目乘以单个工位风量得出系统总风量，吸气罩根据工位大小制作，连接吸气罩和主机的管道设计时尽量避免弯头等对风量的衰减。这种定制化设计，使系统能够精准匹配不同车间的实际工况。

The centralized welding smoke purification system consists of four parts: smoke and dust capture, pipeline, dust removal host, and fan. This system needs to be installed by workers before it can be used, and it cannot be moved after installation. Its biggest feature is that each component can be customized according to the actual situation of the workshop: the number of filter elements is determined based on the amount of welding smoke, the total air volume of the system is obtained by multiplying the number of workstations by the air volume of a single workstation, the suction hood is made according to the size of the workstation, and the design of the pipeline connecting the suction hood and the host avoids the attenuation of air volume by bends and other heads as much as possible. This customized design enables the system to accurately match the actual working conditions of different workshops.

从技术研究角度看，焊接车间烟尘治理主要包括源头控制和传播途径治理两种形式。 整体治理方面，分层送风是最优气流组织形式，车间下部通过低速送风，利用空气密度差将新鲜空气直接送入工作区，烟尘浓度较大的区域中逐渐充满新鲜空气。实践表明，使用分层送风后，粉尘平均浓度可降低2.9mg/m³，粉尘超标率降低超过60%。局部除尘则从烟尘源头直接捕集，利用小风量收集高浓度粉尘，通常在高污染区域或工位上方加装吸顶罩。

From a technical research perspective, the treatment of welding workshop dust mainly includes two forms: source control and transmission pathway control. In terms of overall governance, layered air supply is the optimal form of airflow organization. The lower part of the workshop uses low-speed air supply to directly send fresh air into the work area through the difference in air density, gradually filling the areas with high smoke and dust concentration with fresh air. Practice has shown that using layered air supply can reduce the average dust concentration by 2.9mg/m ³ and the dust exceedance rate by more than 60%. Local dust removal captures high concentration dust directly from the source of smoke and dust, using small air flow to collect it. Usually, a suction hood is installed above high pollution areas or workstations.

选型决策的核心逻辑是“工况决定形式”。 焊接工位较少、作业点不固定的车间，适合配置移动式焊烟净化器，灵活性优先；焊接工位较多且紧凑、同时加工多种工序的车间，则应选择集中式系统，通过管网将各工位烟尘汇总处理。对于追求长期稳定运行的企业而言，集中式系统虽初期投资较大，但在运行效率和管理便利性上具有明显优势。

The core logic of selection decision-making is that "working conditions determine the form". Workshops with fewer welding stations and non fixed operation points are suitable for configuring mobile welding smoke purifiers, with priority given to flexibility; For workshops with multiple and compact welding stations that process multiple processes simultaneously, a centralized system should be selected to collect and treat smoke and dust from each station through a pipeline network. For enterprises pursuing long-term stable operation, although centralized systems require significant initial investment, they have obvious advantages in operational efficiency and management convenience.

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