Air lifts

[GRZ]

Ran on to this site kinda by accident
I am trying to refit an IMS 4010 22' floating dredge with an air lift or
venturi to pass 6" rocks.
I want to dredge river gravel and the fan pump that is oem will not handle the big rocks or the wear of gravel. I am trying to come up with a no moving parts dredge boom.
I could maybe have an air lift down on the bottom and then use the original pump upstream on the boom to feed some kind of venturi??
here is a thread address from an old discussion http://www.treasurenet.com/f/index.php/topic,19842.0/prev_next,next.html
I think if I could find Dinkydick profile 2664 my questions would be answered , he seemed to really have a handle on this airlift design

 

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[Skimmer]

Wow...
6" rocks? They will come out the end of an airlift like cannon balls, I bet, IF you can get the lift required to move 'em. I think you're on the right track contacting Dinkydick....sounds like he's "been there, done that" as far as the info you need....maybe PM him? Good Luck! Mike

 

[SEAHUNTER]

Dinkydick
Where are you? We need your help with some airlifts?
Seahunter