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Printable vacuum pump
by hansj66, published
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The design files for this thing have been removed as a protest against Stratasys after their decision to file a patent infringement lawsuit against Microboards Technology. Their decision is extremely destructive and also underlines that the patent system is obsolete as it no longer serves any purpose for the betterment of society. Its main role is as a blunt weapon used by incumbents to hamper innovation. I see absolutely no reason to continue indirectly supporting Stratasys by providing free content to Thingiverse.
Water jet vacuum pump (Aspirator / Bunsen pump / Venturi pump).
In its current state, it will happily implode an empty soda bottle, but the theoretical limit for such a pump is the vapour pressure of water.
Instructions
1) Slice & print pump.stl using 100% infill for maximum strength
2) Sand and glue the pieces together using acetone. Paint the seams with acetone/ABS.
The design is for a vacuum hose with an outer diameter of 9 m.m. and a water hose with an inner diameter of 13 m.m. The design can easily be modified to accomodate other dimensions.
Insert the vacuum hose (a semi-rigid thick walled PVC tube will do), and connect a standard garden hose using a small hose clamp.
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The design files for this thing have been moved to GitHub: https://github.com/hansj66/PrintableVacuumPump
That's the right place for it, but the problem is that GitHub doesn't have much preview options/categories, collections and other important social features. But I totally understand your decision. But could you please add the link (with a nice sentence about git(Hub)) to the description? Thanks.
does anyone still have this file? please message me for my email. screw their bullshit patent
I've made one, and it really works! The part that fits onto the input hose could do with a greater surface area to join to the rest of the pump. Maybe a lip that fits the larger body size, or printed with skirt settings to mimic that. That one bit could also benefit from higher infill, I think.
That said, it's incredible to me that this works! I now own a working aspirator pump! Thankyou!
Thank's for the positive feedback. Comments like this are really inspiring :)
This is awesome. I read about these on the old sci-am amateur scientist articles, but I've never seen one commercially. I'm looking forward to printing this!
I'm going to ask the stupid question. How does this work? (For someone without any knowledge about pumps)
There are no stupid questions :)
The pump operates on the venturi effect / Bernoulli's principle. Wikipedia has some articles on the subject:
http://en.wikipedia.org/wiki/Aspirator_(pump)http://en.wikipedia.org/wiki/A...
http://en.wikipedia.org/wiki/Bernoulli_principlehttp://en.wikipedia.org/wiki/B...
http://en.wikipedia.org/wiki/Venturi_effecthttp://en.wikipedia.org/wiki/V...
PS. The thing is a work in progress. it took me
3-4 iterations on the design before I ended up with a working device. The performance can probably be improved, but it still is a fun device.
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