Adam and I

Peristaltic Pump

by hoeken, published

Adam and I
Peristaltic Pump by hoeken Nov 22, 2008


This is an attempt at a lasercut peristaltic pump. These types of pumps are useful for pumping tons of materials. They can also be made from common materials. They also are very simple and easy to maintain: there are very few moving parts, and no gaskets, seals, etc. Simply pop in some aquarium tubing and you're good to go.

More info on wikipedia: http://en.wikipedia.org/wiki/Peristaltic_pump

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how much l/m can it push, and how much head does it generate?

forget this layout....it looks nice but wont work... for sure :D

with this layout, this thing can´t work. where have you placed the gears? du you have an image? thank you :)

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Peristaltic Pump by hoeken is licensed under the GNU - GPL license.

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how much l/m can it push, and how much head does it generate?

forget this layout....it looks nice but wont work... for sure :D

with this layout, this thing can´t work. where have you placed the gears? du you have an image? thank you :)

hey. i bought a chinalasercutter.after cutting out your pump im not sure how to assemble it.. is this a functional layout or only a idea how it can work. i have no idea how to place the gears. can you help me please :) ? thank you very much

Thanks so much! i'm trying to make a things like that to control the perfusion . that's very useful !!! Cheers!!

I like this pump. ... I did get it cut out, but what sizes of bolts / screws does it need. ( I live in the sicks and don't have a big selection available, so I may need to order it and want to get the 'right stuff' the first time!)

hey, what did you use to generate the gears? i've been doing another project that needs precise involute gears, and the script that i found is not getting the job done.

I'm in the process of writing C code that emits EPS drawings of involute gears, would that be helpful?

that already exists, but to dxf and gcode:


DXF generator for involute gears

Demented Chihuahua's mention of the paste extruder just gave me a flash of inspiration; if you built a pump of this type with two rubber hoses instead of one, you could pump equal amounts of two different fluids at the same time, which would be perfect for Alumilite casting resin. You could build an epoxy extruder.

Problem is, how would you mix the two components together without gluing the nozzle shut?

use disposable nozzles.

Did you ever consider using this for the Frostruder?

I've been planning on making a "cool suit" which is an outfit lined with small tubes that are used to circulate cooled water to help maintain or lower the wearers body temp. This pump would be perfect for this. Thank you. I'll let you know how it works out. 8-)

I had this exact same idea. Good luck, I'd love to see a version that I could just buy a copy and print it out myself...

I think I'm going to go to lab and cut this out now. Can you provide some additional assembly details and some photos? I want to see if I can attach this to a servo motor of sorts and be able to use it to precision dose fluids.

thanks! reza

nope, no idea how it's supposed to go together, and unfortunately, I can't make heads out of your assembly diagram. I like the idea though. Might have to come up with my own variant.

Hmm. I tried to attach a pic, but it didn't seem to want to work. Here is a link to it.. http://tinyurl.com/8n5x5nhttp://tinyurl.com/8n5x5n

i just cut out the pattern, but i wasn't sure about the scale. dunno why dxf doesn't include the units.. will attempt to assemble it.. -r

It looks like the scale should be 12x12, since that's the name of the main DXF, but I'll let you know how ours turns out when it's assembled (hopefully)

Here's a video about this thing!

< object width="500" height="281" > < param name="allowfullscreen" value="true"/ > < param name="allowscriptaccess" value="always"/ > < param name="movie" value="http://vimeo.com/moogaloop.swf?clip_id=2404609http://vimeo.com/moogaloop.swf... & amp;amp;server=http://vimeo.comvimeo.com & amp;amp;show_title=1 & amp;amp;show_byline=1 & amp;amp;show_portrait=0 & amp;amp;color=ff9933 & amp;amp;fullscreen=1"/ > < embed src="http://vimeo.com/moogaloop.swf?clip_id=2404609http://vimeo.com/moogaloop.swf... & amp;amp;server=http://vimeo.comvimeo.com & amp;amp;show_title=1 & amp;amp;show_byline=1 & amp;amp;show_portrait=0 & amp;amp;color=ff9933 & amp;amp;fullscreen=1" type="application/x-shockwave-flash" width="500" height="281" > < /embed > < /object > < br/ > < a href="http://vimeo.com/2404609http://vimeo.com/2404609" > Things - Zach Smith Lazzzored a Peristaltic Pump < /a > from < a href="http://vimeo.com/brehttp://vimeo.com/bre" > Bre Pettis < /a > on < a href="http://vimeo.comhttp://vimeo.com" > Vimeo < /a > .

Gravy fountain... ROFL! < /br >

I have seen gravy fountains that use this type of pump.

Love to see more of these mechanical things that you can use in all sorts of projects!

That opens some possibilities!

Any idea how much backlash you get with lasercut gears like this, and what torque it takes to strip them? I guess I'm asking whether this is a concept or whether you've used laser cut gears before.

I havent done any sort of thorough testing, but i've used lasercut gears before (they are part of the current extruder design actually)

they certainly do have a bit of slop, but thats mostly due to me not compensating for the kerf of the laser. even with the play, the backlash isnt really a problem because you only deal with backlash when changing direction. with a pump like this (or an extruder) you really only run it in one direction.

i havent found out what it takes to strip them, but they are pretty tough. my motors always stall out before that happens =)

That's awesome, thanks. :-)

Zach, were you planning on using this for the support extruder possibly? If so, great idea! If not, I think it could work real well depending on what it is made out of. The pressure developed could be really large. Good for stuff like joint compound and such. Also, allows for very accurate dispensing of semi-liquids.

there are no immediate plans for making this into a reprap thing... i just wanted to try and make a peristaltic pump for Lazzzor Battle 2008.

However, I wouldn't rule out the possiblity if it turns out to work well enough.