This wheel has already been invented.
https://www.millerwelds.com/safety/r...irators-m00482
But $2000USD it's pricey.
This was the first hit on search for "welding helmet with air filtration", so there probably are many other suppliers.
3M has one titled FRESH AIR WELDING HELMET SYSTEM, which used compressed air with a vortex tube, similar to mining equipment. But it's ~$1600USD.
I've looked for this before, but just for cooling air, as I get's real irritated when my eye glasses, and the shade glass fog up.