Here's the overlook of this thing, a big redstoney mess, I could make it look better but thats not what were here for right?
You put the Ground Netherrack in here, WHILE the system is locked. (Also you do have to manually load the urns to, but that isnt so bad.)
System lock, 1 lever, 1 redstone.
So now, ya got you're ground netherrack in, but we need those bottles to start a - pumping, when you're ready for that just turn system lock off, along with you're desired amount of urns and ground netherrack ready for use.
Finally! Weve got the soul urns pumping and coming out very fast, but now..how do we collect these urns? Well, ive worked for a bit and came up with a floatable item elevator I guess you could say. The bad thing about this is you must manually press the elevator button...someone could probably fix this, but my brain was dead. The elevator is on the left, the way it gets the items up and floating is that they sit next to a piston in the water, and when the elevator button is pressed the items get pushed into the main stream and start to go up.
And a little collection area never hurt.
Now finally the LAST thing is...and this may or may not be bad, but collecting the hellfire dust must be manual to, either that or someone has to find a way to fix this to, the only way ive discovered is to put a panel next to the soul sand hopper and nudge against it. Allowing you to pick it up through the wall.
PHEW, that was a lot of typing and if you managed to make it here, im a bit impressed. Well anyways, if i'm to bad at explaining this stuff the world download for my tinkering world will be available because im sure ive missed a bit of stuff or explained something poorly at times. Im a kid, dont expect me to do much =)