Whether it is purifying the air in the factory or protecting the health of workers, installing dust removal equipment is a better method. Different dust removal methods have different actual effects. Below are several common welding workshop dust removal processes and equipment.

(1)焊接烟尘净化器净化

(1) Welding fume purifier purification

焊接烟尘净化器净化是工位除尘的常见的除尘方式。焊烟净化器有别于普通的工位除尘，焊烟净化器在进行烟尘净化时可以不铺装集中管路，是将单个工位产生的焊接烟尘吸进除尘器内部过滤系统，过滤后的洁净空气重新排放到生产车间，烟尘则沉积到积灰抽屉。移动式焊烟净化器由净化器、吸气臂和吸气罩。

Welding fume purifier purification is a common dust removal method for workstation dust removal. Welding fume purifier is different from ordinary station dust removal. When purifying smoke and dust, welding fume purifier does not need to install a centralized pipeline. It sucks the welding fume generated by a single station into the internal filtration system of the dust collector, and the filtered clean air is discharged back into the production workshop, while the smoke and dust are deposited in the ash drawer. The mobile welding smoke purifier consists of a purifier, suction arm, and suction hood.

焊接烟尘净化器的设计原理：风机运行时，烟尘气体由进风口进到除尘设备，在除尘设备内气流被强制性更改风向且流速降低，烟尘随气流穿过滤筒时，被滤筒过滤而阻留在其表层，净化后的气体由滤筒内上升进到中筒体，经风机从风出口经活性炭过滤棉再次过滤排出，当滤筒表层烟尘较多时，打开脉冲开关，脉冲喷吹控制仪开始运转，电磁脉冲阀工作，使气包内的压缩空气经喷吹管喷高速喷到滤筒内，同时诱导数倍于喷射气量的周边空气进到滤筒，导致滤筒内瞬时正压，使积附在滤筒表层的烟尘受重力影响，落入灰斗中，可在停止设备运转后将灰斗内灰尘清理。

The design principle of welding smoke and dust purifier: When the fan is running, the smoke and dust gas enters the dust removal equipment from the air inlet. The airflow inside the dust removal equipment is forced to change the direction of the wind and the flow rate decreases. When the smoke and dust pass through the filter cartridge with the airflow, it is filtered by the filter cartridge and remains on its surface. The purified gas rises from the filter cartridge and enters the middle cylinder. It is then filtered and discharged again by the fan through activated carbon filter cotton at the air outlet. When there is a lot of smoke and dust on the surface of the filter cartridge, Turn on the pulse switch, the pulse blowing control device starts to operate, and the electromagnetic pulse valve works. The compressed air inside the air bag is sprayed into the filter cartridge at high speed through the blowing pipe, while inducing several times the amount of injected air to enter the filter cartridge. This causes an instantaneous positive pressure inside the filter cartridge, causing the smoke and dust accumulated on the surface of the filter cartridge to be affected by gravity and fall into the ash hopper. After stopping the equipment operation, the dust inside the ash hopper can be cleaned.

(2)工位集中除尘

(2) Centralized dust removal at work station

普通的工位除尘是在生产车间内部铺装通风风管，在焊接工位设置通风口，在生产车间外部设置大功率风机，将电焊焊接时导致的烟尘靠风机的吸力有通风口吸进，再利用气体输送选用管路集中排出生产车间。生产车间内部与通风口压力对比，处在微正压。因为空气流向是以高压到低压，电焊焊接产生的烟尘就会随气流进到通风风管。选用这类方法，通风口与烟尘源较近，蔓延的烟尘大大减少，对烟尘的吸进比例较高。因为烟尘蔓延减少，生产车间空气状况大大改进，职工吸进烟尘的概率大幅度降低。缺点是须要在生产车间内部铺装较长的管路，不便于改造施工，设计不合理可能会导致后期维护保养不便。而且管路和焊接烟尘采集点全是固定不动的，离集尘点越远，收集的实际效果就越差。

Ordinary station dust removal involves laying ventilation ducts inside the production workshop, installing ventilation openings at the welding station, and installing high-power fans outside the production workshop. The smoke and dust generated during welding are sucked in through the ventilation openings through the suction of the fans, and then discharged from the production workshop using pipelines for gas transportation. The pressure inside the production workshop is slightly positive compared to the vent pressure. Because the air flow direction is from high pressure to low pressure, the smoke and dust generated by welding will flow into the ventilation duct with the air. By using this type of method, the ventilation opening is closer to the smoke and dust source, greatly reducing the spread of smoke and dust, and the proportion of smoke and dust suction is higher. Due to the reduced spread of smoke and dust, the air conditions in the production workshop have greatly improved, and the probability of employees inhaling smoke and dust has significantly decreased. The disadvantage is that long pipelines need to be laid inside the production workshop, which is not convenient for renovation construction. Improper design may lead to inconvenience in later maintenance and upkeep. Moreover, the pipelines and welding smoke and dust collection points are all fixed, and the farther away they are from the dust collection point, the worse the actual collection effect.

在实际运用中，需根据厂房结构、生产车间大小、电焊焊接点位置分布等计算、设计和布局管路、选择风机，是一项较为复杂的工程。新的工位除尘选用了分散化的烟尘净化器，就近对焊接烟尘进行了过滤处理，实际效果很好，净化后的空气直接循环进到生产车间，降低了能源消耗。

In practical application, it is a complex project to calculate, design, and layout pipelines and select fans based on the structure of the factory building, the size of the production workshop, and the distribution of welding points. The new station adopts a decentralized smoke and dust purifier for dust removal, which filters welding smoke and dust nearby. The actual effect is very good, and the purified air is directly circulated into the production workshop, reducing energy consumption.

(3)整体或者局部排烟

(3) Overall or partial smoke exhaust

具体是利用生产车间顶端排风系统装置将焊接烟尘随空气一同从生产车间底部排出。该方法是利用在生产车间房顶适合的位置安装送风和排风系统装置，利用送风和排风系统，促使生产车间烟尘气流朝着排风系统的方向流动，从生产车间顶端排出。

Specifically, the top exhaust system of the production workshop is used to exhaust welding smoke and dust along with the air from the bottom of the production workshop. This method utilizes the installation of air supply and exhaust system devices at suitable positions on the roof of the production workshop. By utilizing the air supply and exhaust system, the smoke and dust airflow in the production workshop flows in the direction of the exhaust system and is discharged from the top of the production workshop.