Mobile welding fume extractor has two directional and two rotary polyurethane casters with brake device for easy moving and stationing. It is suitable for the purification of fume and dust generated in all kinds of welding, grinding and other places as well as for collecting rare metal particles and precious material. The filter cartridge of the welding fume extractor is made of imported filtering material of high filtration precision and can filter out welding fume of 0.5μm. According to the extractor’s work intensity and the amount of dusts, the usage life of the filter cartridge is different.Through centrifugal fan, the welding smoke come into exhaust inlet. The universal dust hood sets the flame arrester. The spark will be blocked by flame arrester. Smoke gas into the sedimentation chamber, The coarse dust fall directly to ash hopper, fine dust particles by filter capture outer surface, clean gas go to the clean room after filter filtration purification. Clean air filter and the activated carbon adsorption further after purification and then outlet discharge.1.  A special imported ABB turbo fan and motor, use prevent motor burn out against overload circuits, high safety, stable work performance. 2.  USES the built-in PLC centralized control mode, simple structure, easy operation. 3.  Pulse type automatic dust discharge: adopts the comprehensive automatic rotating counter blowing ash removal, further thoroughly, clean filter surface dust. It can always keep dust collector constant air volume absorption. At the bottom of the air compressor parts, it has high pressure hose connection. It can guarantee the purifier always in good working condition. (According to user requirements , we can design it as automatic or manual control) 4.  Filter cartridge adopts the imported materials, Long service life. It can absorb dust particles, 0.3 microns. It is good filtering effect for wet and sticky dust. 5.  The optional activity of universal arm can be move 360 degrees. It can suck the flue gas from the flue gas occurs, greatly improving the rate of dust collection, protect the health of workers. 6.  Purifier internal against fire hazards and slag adopted three big grain protective measures, make the service life of the purifier is longer, more safe and reliable.