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richard_d

Sat, Jan 23, 2016 1:07 AM

I am seeking a gear pump design that can be modified as needed. Although
there are many .stl gear pumps designs around, I have not yet found a
parametric version. Has anyone seen such a beast?

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I am seeking a gear pump design that can be modified as needed. Although there are many .stl gear pumps designs around, I have not yet found a parametric version. Has anyone seen such a beast? -- View this message in context: http://forum.openscad.org/Parametric-gear-pump-design-tp15823.html Sent from the OpenSCAD mailing list archive at Nabble.com.

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Neon22

Sat, Jan 23, 2016 5:26 AM

depends what you mean by gear pump.
there are some moineau variants here:

http://www.thingiverse.com/Neon22/collections/moineau

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depends what you mean by gear pump. there are some moineau variants here: - http://www.thingiverse.com/Neon22/collections/moineau -- View this message in context: http://forum.openscad.org/Parametric-gear-pump-design-tp15823p15826.html Sent from the OpenSCAD mailing list archive at Nabble.com.

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richard_d

Sat, Jan 23, 2016 2:36 PM

Thanks for the input regarding the Moineau system. I am aware of this option
but I am more interested in a gear pump system as in
http://www.thingiverse.com/search?q=756866&sa= except in parametric form.

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Thanks for the input regarding the Moineau system. I am aware of this option but I am more interested in a gear pump system as in http://www.thingiverse.com/search?q=756866&sa= except in parametric form. -- View this message in context: http://forum.openscad.org/Parametric-gear-pump-design-tp15823p15842.html Sent from the OpenSCAD mailing list archive at Nabble.com.

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fred

Sat, Jan 23, 2016 3:31 PM

I did a quick search on Thingiverse using the search phrase "openscad gear pump" and got three pump designs, all of which are OpenSCAD creations. One is a roots style blower, the other two are gear rotor type. Perhaps one of them will assist your search?

On Saturday, January 23, 2016 9:37 AM, richard_d <richard.mortimer@bell.net> wrote:

Thanks for the input regarding the Moineau system. I am aware of this option
but I am more interested in a gear pump system as in
http://www.thingiverse.com/search?q=756866&sa= except in parametric form.

--
View this message in context: http://forum.openscad.org/Parametric-gear-pump-design-tp15823p15842.html
Sent from the OpenSCAD mailing list archive at Nabble.com.

OpenSCAD mailing list
Discuss@lists.openscad.org
http://lists.openscad.org/mailman/listinfo/discuss_lists.openscad.org

I did a quick search on Thingiverse using the search phrase "openscad gear pump" and got three pump designs, all of which are OpenSCAD creations. One is a roots style blower, the other two are gear rotor type. Perhaps one of them will assist your search? On Saturday, January 23, 2016 9:37 AM, richard_d <richard.mortimer@bell.net> wrote: Thanks for the input regarding the Moineau system. I am aware of this option but I am more interested in a gear pump system as in http://www.thingiverse.com/search?q=756866&sa= except in parametric form. -- View this message in context: http://forum.openscad.org/Parametric-gear-pump-design-tp15823p15842.html Sent from the OpenSCAD mailing list archive at Nabble.com. _______________________________________________ OpenSCAD mailing list Discuss@lists.openscad.org http://lists.openscad.org/mailman/listinfo/discuss_lists.openscad.org

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richard_d

Sat, Jan 23, 2016 3:49 PM

I had seen these options earlier and ignored them but, prompted by your
response, I took another look and I think the Gerotor design might be
modified to my purpose. So, thank you for jogging me out of my rut.

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I had seen these options earlier and ignored them but, prompted by your response, I took another look and I think the Gerotor design might be modified to my purpose. So, thank you for jogging me out of my rut. -- View this message in context: http://forum.openscad.org/Parametric-gear-pump-design-tp15823p15845.html Sent from the OpenSCAD mailing list archive at Nabble.com.

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Neon22

Sun, Jan 24, 2016 12:50 AM

Just a side note:

I have used roots style blowers for air and they are incredibly noisy.
Could not recommend.

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Just a side note: - I have used roots style blowers for air and they are incredibly noisy. Could not recommend. -- View this message in context: http://forum.openscad.org/Parametric-gear-pump-design-tp15823p15855.html Sent from the OpenSCAD mailing list archive at Nabble.com.

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fred

Sun, Jan 24, 2016 1:05 AM

What is the primary contributor to the noise, in your opinion? A non-3d-printed blower would be made of metal, while these model items would be plastic. How much could that mitigate the noise level?
If the pump design is being used for liquid, I'd expect that would absorb much of the noise of such a device, yes?

On Saturday, January 23, 2016 7:50 PM, Neon22 <mschafer@wireframe.biz> wrote:

Just a side note:

I have used roots style blowers for air and they are incredibly noisy.
Could not recommend.

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View this message in context: http://forum.openscad.org/Parametric-gear-pump-design-tp15823p15855.html
Sent from the OpenSCAD mailing list archive at Nabble.com.

OpenSCAD mailing list
Discuss@lists.openscad.org
http://lists.openscad.org/mailman/listinfo/discuss_lists.openscad.org

What is the primary contributor to the noise, in your opinion? A non-3d-printed blower would be made of metal, while these model items would be plastic. How much could that mitigate the noise level? If the pump design is being used for liquid, I'd expect that would absorb much of the noise of such a device, yes? On Saturday, January 23, 2016 7:50 PM, Neon22 <mschafer@wireframe.biz> wrote: Just a side note: - I have used roots style blowers for air and they are incredibly noisy. Could not recommend. -- View this message in context: http://forum.openscad.org/Parametric-gear-pump-design-tp15823p15855.html Sent from the OpenSCAD mailing list archive at Nabble.com. _______________________________________________ OpenSCAD mailing list Discuss@lists.openscad.org http://lists.openscad.org/mailman/listinfo/discuss_lists.openscad.org

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Neon22

Sun, Jan 24, 2016 1:44 AM

yes metal on metal at high speed. I have no concept of what you're pumping or
volumes.
Roots blowers are known for their constant velocity non-pulsing output.
rotary vane pumps have replaced them for lower noise.

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View this message in context: http://forum.openscad.org/Parametric-gear-pump-design-tp15823p15857.html
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yes metal on metal at high speed. I have no concept of what you're pumping or volumes. Roots blowers are known for their constant velocity non-pulsing output. rotary vane pumps have replaced them for lower noise. -- View this message in context: http://forum.openscad.org/Parametric-gear-pump-design-tp15823p15857.html Sent from the OpenSCAD mailing list archive at Nabble.com.

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fred

Sun, Jan 24, 2016 1:59 AM

I'm not the original poster, and I don't know the primary objective, liquid or gas, high speed or low. I don't have currently a project involving pumping, but I try to keep my alleged mind open to new concepts, especially those involving OpenSCAD. Rotary pumps discussions qualify in that respect.

On Saturday, January 23, 2016 8:44 PM, Neon22 <mschafer@wireframe.biz> wrote:

yes metal on metal at high speed. I have no concept of what you're pumping or
volumes.
Roots blowers are known for their constant velocity non-pulsing output.
rotary vane pumps have replaced them for lower noise.

--
View this message in context: http://forum.openscad.org/Parametric-gear-pump-design-tp15823p15857.html
Sent from the OpenSCAD mailing list archive at Nabble.com.

OpenSCAD mailing list
Discuss@lists.openscad.org
http://lists.openscad.org/mailman/listinfo/discuss_lists.openscad.org

I'm not the original poster, and I don't know the primary objective, liquid or gas, high speed or low. I don't have currently a project involving pumping, but I try to keep my alleged mind open to new concepts, especially those involving OpenSCAD. Rotary pumps discussions qualify in that respect. On Saturday, January 23, 2016 8:44 PM, Neon22 <mschafer@wireframe.biz> wrote: yes metal on metal at high speed. I have no concept of what you're pumping or volumes. Roots blowers are known for their constant velocity non-pulsing output. rotary vane pumps have replaced them for lower noise. -- View this message in context: http://forum.openscad.org/Parametric-gear-pump-design-tp15823p15857.html Sent from the OpenSCAD mailing list archive at Nabble.com. _______________________________________________ OpenSCAD mailing list Discuss@lists.openscad.org http://lists.openscad.org/mailman/listinfo/discuss_lists.openscad.org

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richard_d

Sun, Jan 24, 2016 3:27 AM

My goal is to pump melted wax so that I can draw on fabric as in Batik art.
Nick Seidl (Kolbi in the RepRap forum) published a lovely gear pump for
melted chocolate http://forums.reprap.org/read.php?230,342949,page=1 but,
over the past year and a half, he has struggled unsuccessfully to
commercialize it. As his venture may not materialize, I decided to try and
build my own. I have now drawn the two gears in OpenSCAD and will gradually
do the rest. I expect to print the parts in nylon (possibly Alloy 910) so
the structure will be stable at around 80 C. Whether I can accomplish all
this remains to be seen. Maybe Nick will beat me to it after all. Thanks
for your interest.

--
View this message in context: http://forum.openscad.org/Parametric-gear-pump-design-tp15823p15859.html
Sent from the OpenSCAD mailing list archive at Nabble.com.

My goal is to pump melted wax so that I can draw on fabric as in Batik art. Nick Seidl (Kolbi in the RepRap forum) published a lovely gear pump for melted chocolate http://forums.reprap.org/read.php?230,342949,page=1 but, over the past year and a half, he has struggled unsuccessfully to commercialize it. As his venture may not materialize, I decided to try and build my own. I have now drawn the two gears in OpenSCAD and will gradually do the rest. I expect to print the parts in nylon (possibly Alloy 910) so the structure will be stable at around 80 C. Whether I can accomplish all this remains to be seen. Maybe Nick will beat me to it after all. Thanks for your interest. -- View this message in context: http://forum.openscad.org/Parametric-gear-pump-design-tp15823p15859.html Sent from the OpenSCAD mailing list archive at Nabble.com.

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Parametric gear pump design