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Homemade high pressure pump

Posted: Sun Oct 01, 2006 2:04 pm
by POS
I'm making a high pressure pump right now. My compressor only reaches 7 bar (100 psi), and that is way to low pressure to shoot my metal pneumatic guns.

To make the pump, i use the skills I learned here and with the buiding of my first gun, the MB1.

The gun has 1 diaphragma-like valve to let air in, and one piston valve to seal of the high pressure. I tought you guys could use this info and design, if you recuire a high pressure pump yourself.

I could buy one, but were is the fun in that. It is almost finished. I used material that was lying around anyway, so far the mump has only costed me some sweat.

Here's the design.

[albumimg]229[/albumimg]

Hope someone could use it. When the punp is finished, I'll put is a pic or two

Posted: Sun Oct 01, 2006 3:53 pm
by Pete Zaria
You could use check valves in place of the diaphragm and piston valves.

I'm not sure I understand the purpose of the long horizontal piece on top. Is that the handle? If so, you'll need to use a ball joint at where the piston plunger meets the handle, so it can rotate. I don't understand how the handle works, can you put some labels on the diagram?

Nice design. Let me know how it works.

Peace,
Pete Zaria.

Posted: Sun Oct 01, 2006 11:21 pm
by Brian the brain
If you can't understand a diagram like this you need to get yourself checked hahaha

Posted: Sun Oct 01, 2006 11:46 pm
by Pete Zaria
Read my post more carefully, Brian. I understand the concept, just not the handle configuration.

Peace,
Pete Zaria.

Posted: Sun Oct 01, 2006 11:51 pm
by pyromanic13
it confuses me also. (what is the bar on the left that is verticle then has a 90 degree turn?)

Posted: Mon Oct 02, 2006 12:39 am
by sgort87
Actually, that piston needs more than a ball joint at the top. See for yourself. When the arm is lifted, what happens to the piston when pulled up? Since the arm is attached that way it will just jam.

Posted: Mon Oct 02, 2006 12:54 am
by Pete Zaria
I figured the "T" could slide up and down that pipe, so a ball joint where the handle meets the T should work... None the less, I think the handle could probably be better designed. Good concept, though.

Peace,
Pete Zaria.

Posted: Mon Oct 02, 2006 11:52 am
by Brian the brain
THe entire pump must be able to pivot at the bottom.

Posted: Mon Oct 02, 2006 12:01 pm
by beebs111
waaaaaaaaaaaaaaa i dont see anything!

Posted: Mon Oct 02, 2006 12:09 pm
by pyromanic13
why does the handle pivot?

Posted: Mon Oct 02, 2006 3:06 pm
by POS
Pete Zaria wrote:I figured the "T" could slide up and down that pipe, so a ball joint where the handle meets the T should work... None the less, I think the handle could probably be better designed. Good concept, though.

Peace,
Pete Zaria.
You got it right. I tought it was obvious, but I see it is't. The "T" slides indeed up and down the handle, and it pivotes on the piston, so the piston will go staight up. The handle is needed to push extra hard on the piston to creapte a bigger pressure.

Got one problem today. I cant't weld dtah good, so the welding leaks. I tryed to fill the bottom ogf the pipe with melted lead, that was no problem, but the lead doesn't seal it of. It still leaks. So I gues I have to file away the leaking parts that I welded, and weld them again, and again ... :evil:

Posted: Sun Oct 08, 2006 7:45 pm
by Infernal2
Here's a link to a much easier hand pump that doubles as a vacuum pump...

http://sci-toys.com/scitoys/scitoys/aero/vacuum/