（1）焊接烟尘的治理设备 金属焊接产生的悬浮在空气中的颗粒非常小，是“可呼吸”的，并称其为焊接烟雾。这种焊接烟雾中含有气态和颗粒状态对人体有害的污染物质。治理的目的：一是使室内有害污染物的浓度小于国家强制性标准和《工作场所有害因素职业接触界限值》所规定的车间空气中焊接烟尘卫生标准（电焊烟尘醉高允许浓度为6mg/m3，铝合金焊接烟尘为4mg/m3?）；二是排向大气的污染物浓度达到国家环保要求。?由于焊烟的尘埃粒径微小，一般的过滤材质无法过滤焊接烟尘，应采用聚四氟乙烯覆膜滤筒式过滤器，采用集中式整体烟尘处理设备，脉冲反吹清灰，确保过滤精度。

(1) The treatment equipment for welding smoke and dust produces very small particles suspended in the air during metal welding, which are "breathable" and are called welding smoke. This welding smoke contains pollutants in both gaseous and particulate states that are harmful to human health. The purpose of governance is to make the concentration of indoor harmful pollutants lower than the national mandatory standards and the hygiene standards for welding smoke and dust in the workshop air specified in the Occupational Exposure Limits for Hazardous Factors in the Workplace (the allowable concentration of welding smoke and dust is 6mg/m3, and the allowable concentration of aluminum alloy welding smoke and dust is 4mg/m3); The second is that the concentration of pollutants discharged into the atmosphere meets national environmental protection requirements.? Due to the small particle size of welding smoke, ordinary filtering materials cannot filter welding smoke. Therefore, polytetrafluoroethylene membrane filter cartridge type filters should be used, and centralized overall smoke and dust treatment equipment should be used. Pulse back blowing is used to clean the dust, ensuring filtration accuracy.

（2）高效覆膜聚酯滤筒的性能特点 聚四氟乙烯（PTFE）覆膜聚酯滤材是一种高科技产品，它的微孔结构可在特殊条件下经机械拉伸得到，而丝毫未改变其原有特性。微孔过滤覆膜孔径可控制在0.2～0.3mm，过滤方法属于膜表面过滤。膜表面光滑又具备极佳的化学稳定性，能抗腐蚀，耐酸碱。不老化又憎水性。在过滤时膜表面截留的粉尘很容易剥落，其通气量能长时期保持在同一水平上。由于覆膜滤材是用其光滑不粘的表面截留粉尘，利用这一特性即可节约脉冲清灰系统的压缩空气量，又可避免烟尘对薄膜基布的磨损，延长了滤筒的使用寿命。同时为设备提供醉低而平稳的压降差。

(2) The performance characteristics of high-efficiency coated polyester filter cartridges are polytetrafluoroethylene (PTFE) coated polyester filter materials, which are high-tech products. Its microporous structure can be obtained through mechanical stretching under special conditions without changing its original characteristics. The pore size of the microporous filtration membrane can be controlled between 0.2-0.3mm, and the filtration method belongs to membrane surface filtration. The surface of the membrane is smooth and has excellent chemical stability, which can resist corrosion and acid and alkali. Not aging and hydrophobic. The dust trapped on the membrane surface during filtration is easily peeled off, and its ventilation capacity can be maintained at the same level for a long time. Due to the use of its smooth and non stick surface to retain dust, the use of this feature can save the compressed air volume of the pulse cleaning system and avoid the wear of the film substrate by smoke and dust, thereby extending the service life of the filter cartridge. Simultaneously providing equipment with a low and stable pressure drop difference.

车间焊烟技术除尘烟尘净化系统又被称为多工位焊接烟尘净化系统。主要由过滤单元（除尘器）、大风量吸尘风机、排风管道、电控系统、系统相关配件及操作主件组成。主要是针对焊接工位较多且紧凑、同时加工多种工序及工况较复杂的车间环境治理。主过滤单元所选用的除尘器型号主要根据多工位焊烟净化系统的具体要求来决定，具体要求包括排风管道的管径、长度尺寸；具体的操作工位数量以及需处理面积的排风风量；所处理的烟尘材料的物理及化学性能以及主过滤器、管道、电控，乃至整个除尘系统所处的环境等诸多因素。中央焊接烟尘净化系统流程说明：根据不同的工况为焊接工位设计不同的收集装置，从污染源头经收集装置进入主排风管道，这个过程会将烟气粉尘瞬间收集，保证了工作人员自身健康问题；而后经主管道进入过滤单元（除尘器），烟尘被除尘器中的滤材高度净化，烟气粉尘会在风机负压的作用在附着在滤材表面，脉冲阀控制滤材的自动清灰功能，在脉冲阀及控制程序的作用下，系统会每隔一段时间对滤材从内而外进行反吹清灰，沉流式的设计原理保证反吹过程中的颗粒物及细微粉尘落入集灰桶集中收集，收集后的颗粒粉尘需根据使用周期及烟尘量的大小定期外运清理，净化后的达标气体在风机的作用下经烟筒外排。

The workshop welding smoke technology dust removal and purification system is also known as the multi station welding smoke purification system. It mainly consists of a filtering unit (dust collector), a high air volume vacuum fan, exhaust pipes, an electrical control system, system related accessories, and operating main components. Mainly aimed at workshop environment management with multiple and compact welding workstations, simultaneous processing of multiple processes, and complex working conditions. The model of dust collector selected for the main filtration unit is mainly determined based on the specific requirements of the multi station welding smoke purification system, including the diameter and length size of the exhaust duct; The specific number of operation stations and the exhaust air volume of the area to be processed; The physical and chemical properties of the processed smoke and dust materials, as well as various factors such as the main filter, pipelines, electrical control, and even the environment in which the entire dust removal system is located. Process description of the central welding smoke and dust purification system: Different collection devices are designed for the welding station according to different working conditions. From the source of pollution, the collection device enters the main exhaust duct. This process will instantly collect the smoke and dust, ensuring the health of the workers themselves; Then, it enters the filtering unit (dust collector) through the main pipeline, and the smoke and dust are highly purified by the filter material in the dust collector. The smoke and dust will adhere to the surface of the filter material under the negative pressure of the fan. The pulse valve controls the automatic cleaning function of the filter material. Under the action of the pulse valve and control program, the system will periodically blow back the filter material from the inside out for cleaning. The design principle of the settling flow ensures that particles and fine dust during the back blowing process fall into the ash collection bucket for centralized collection. The collected particle dust needs to be regularly transported and cleaned according to the service cycle and the size of the smoke and dust. The purified standard gas is discharged through the chimney under the action of the fan.

焊接车间滤筒除尘器对焊接烟尘治理为焊接工位(补焊工位)—集尘罩—阻火器—电动调风阀—分支管路—主管路—滤筒除尘器—风机—高空排放。

The welding workshop filter cartridge dust collector controls welding smoke and dust by welding station (welding repair station) - dust collection hood - flame arrester - electric air regulating valve - branch pipeline - main pipeline - filter cartridge dust collector - fan - high-altitude discharge.

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