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Homemade high pressure pump

Post questions and info about pneumatic (compressed gas) powered cannons here. This includes discussion about valves, pipe types, compressors, alternate gas setups, and anything else relevant.
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Homemade high pressure pump

Unread postAuthor: POS » Sun Oct 01, 2006 2:04 pm

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
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Unread postAuthor: Pete Zaria » Sun Oct 01, 2006 3:53 pm

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.
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Unread postAuthor: Brian the brain » Sun Oct 01, 2006 11:21 pm

If you can't understand a diagram like this you need to get yourself checked hahaha
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Gun Freak wrote:
Oh my friggin god stop being so awesome, that thing is pure kick ass. Most innovative and creative pneumatic that the files have ever come by!

Can't ask for a better compliment!!
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Unread postAuthor: Pete Zaria » Sun Oct 01, 2006 11:46 pm

Read my post more carefully, Brian. I understand the concept, just not the handle configuration.

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Unread postAuthor: pyromanic13 » Sun Oct 01, 2006 11:51 pm

it confuses me also. (what is the bar on the left that is verticle then has a 90 degree turn?)
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Unread postAuthor: sgort87 » Mon Oct 02, 2006 12:39 am

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.
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Unread postAuthor: Pete Zaria » Mon Oct 02, 2006 12:54 am

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.

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Unread postAuthor: Brian the brain » Mon Oct 02, 2006 11:52 am

THe entire pump must be able to pivot at the bottom.
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Gun Freak wrote:
Oh my friggin god stop being so awesome, that thing is pure kick ass. Most innovative and creative pneumatic that the files have ever come by!

Can't ask for a better compliment!!
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Unread postAuthor: beebs111 » Mon Oct 02, 2006 12:01 pm

waaaaaaaaaaaaaaa i dont see anything!
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Unread postAuthor: pyromanic13 » Mon Oct 02, 2006 12:09 pm

why does the handle pivot?
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Unread postAuthor: POS » Mon Oct 02, 2006 3:06 pm

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:
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Unread postAuthor: Infernal2 » Sun Oct 08, 2006 7:45 pm

Here's a link to a much easier hand pump that doubles as a vacuum pump...

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