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Ndrew

Piezoelectric Pneumatic Valve

by Ndrew Feb 13, 2013
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And, meanwhile, did you try it, did it work?

As far as a seal you could create a channel and raised flange to sit in the channel around the perimeter.

You're probably right, and I have finally a printer to test it. Here soon I'll try printing and updating the design.

I really don't think a piezo's going to flex enough.

I think you're right, but I'm holding onto the hope that when I do get to make one, I can try it out for myself and see. It's been while since I messed with this design but I think I was predicting about half a mm or stroke or so. Can't remember honestly. If it valves even just a little bit of air though, that air could open another, higher volume valve.

How about a normally-closed valve, with the piezo under tension by a screw? It might relax enough to let something through when activated. And adjustable tension would let you find just the right spot.

You know now that we're taking about adjustment screws, one could totally go in the bottom and up through the outlet hole. Activating the piezo would flex its middle down ward, hitting the screw, pushing the "rim" of the peizo up, opening up the edges! You're a friggen genius!

Pulsing it is a nugget of an idea too. The first activation may not have much stroke but the hundredth will, especially at resonating frequencies.