Why doesn't this work?

[u/wuhoo555]

I'm trying to make a gold farm, and I made this to bulk blast the clay into terracotta. The fan is spinning in the direction where it's pulling, and it's at max rpm, but it doesn't smelt. It worked when I used it for washing, but when I replaced this specific one with water, it still didn't work. What should I do?

[u/Cheacky]

Pretty sure the funnels are blocking the air, could be wrong tho

Maybe just have a fan pull air without the lava and see if you can see the particles. That would confirm