焊接那股呛味，不是普通灰尘，是0.1–1μm的金属氧化物气溶胶，带锰、铬、镍，吸进肺里出不来。治它不能靠“开窗通风”，得在冒烟那一刻就掐住。

The pungent smell of welding is not ordinary dust, it is a metal oxide aerosol of 0.1-1 μ m, containing manganese, chromium, and nickel, which cannot be inhaled into the lungs. It cannot be cured by "opening windows for ventilation", it needs to be stopped at the moment of smoking.

小车间、工位乱动：上移动式净化器，单工位风量≥1500m³/h，配360°万向吸气臂，吸口离焊点30cm内，捕集风速≥0.5m/s，滤筒用PTFE覆膜，对0.3μm颗粒效率99.5%以上。

Small workshops and workstations move around: a mobile purifier with a single workstation airflow of ≥ 1500m ³/h, equipped with a 360 ° universal suction arm, with a suction port within 30cm of the welding point, a capture wind speed of ≥ 0.5m/s, and a PTFE coated filter cartridge with an efficiency of over 99.5% for 0.3 μ m particles.

3个工位以上、固定产线：走集中式滤筒除尘。总风量=工位数×1000~1500m³/h再留20%余量；主管风速12–15m/s防沉降，支管带调节阀做阻力平衡。

3 or more workstations, fixed production line: centralized filter cartridge dust removal. Total air volume=number of workers x 1000~1500m ³/h, with an additional 20% margin; The main wind speed is 12-15m/s to prevent settlement, and the branch pipe is equipped with a regulating valve for resistance balance.

安全配置别省：进风口必装火花捕集器；铝、镁、锌合金焊接按防爆来——防爆电机、防静电滤筒、隔爆阀、泄爆片、全系统接地。

Safety configuration: spark arresters must be installed at the air inlet; Aluminum, magnesium, and zinc alloy welding shall be carried out according to explosion-proof requirements - explosion-proof motor, anti-static filter cartridge, explosion-proof valve, explosion-proof plate, and full system grounding.

滤筒靠脉冲反吹清灰，压力0.4–0.6MPa，压差超1500Pa就该换芯，正常寿命6–12个月，别等出风口冒烟再动。能看厂、能打样、易损件可单独补发的源头厂，比低价贴牌省心得多。

The filter cartridge is cleaned by pulse back blowing, with a pressure of 0.4-0.6MPa. If the pressure difference exceeds 1500Pa, the core should be replaced. The normal service life is 6-12 months. Don't wait for the air outlet to smoke before moving. A source factory that can inspect the factory, make samples, and provide separate replacement for vulnerable parts is much more cost-effective than low-priced OEM.

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