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.p...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

[Dinkydick]

What do you need help on?

Dinkydick