Quote:
Originally posted by Cathar
What you really want to be looking at is the "Quimby Screw Pump", variants of which are what's typically used in hydraulics and the like.
Basically it's two screw/rotors meshing side by side creating two "pockets" that move along. The meshing prevents back-flow down the screws allowing for fairly stupendous pressures to be reached (~5000PSI).
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I kept thinking and thinking, and i just cant see where those "pockets" are created.
I checked the site you gave (a very nice one indeed) and i still cant visualize it.
I mean, if there is a pocket on a screw, when it is rotating, shouldn't the pocket turn to the side and loose the water? :shrug:
Clear plexiglass pump..... that should look sooo L33T!
Could you please remenber the link?
Quote:
Originally posted by myv65
If they were an economical solution to low flow, low pressure pumps, we would see more available. As things are, cheap centrifugals dominate the pond pump market.
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True indeed, but if anyone in this site was going for economical solutions, Cathar wouldn't sell a single Silver Cascade block!
It's a matter of an investment...
But that idea of a clear plexiglass pump like that just left me thinking....
On that site there is also a multi impeller pump, wich achieves better pressure, maybe doing it all in clear plexiglass!
I dunno... :shrug: