Air pumps/creating vacuums

[NuclearFusi0n]

http://pics.apartment808.com/users/NuclearFusi0n/vacuumchamber.jpg

Basically, how can I use a pump (or whatever other object there is) to create a vacuum in a chamber? Hopefully it won't allow air to rush back in when it's off, and also is reversible (basically, i want it to suck out all the air, and then reverse and push air back in as FAST as possible.

 

[Demon-Xanth]

Use a piston style pump.

 

[NuclearFusi0n]

I'm thinking about making the entire chamber one big piston actually, I want the piston thinger jigger to rise up creating the vacuum, and then push down to push all the air out. Is there anyway to build a electric piston style pump? I can go manually if needed, but electric would be much better.

 

[Demon-Xanth]

Get an air compressor. It has a pump, and electric motor all setup and ready to go. Then all you need is a valve to swap the inlet and outlets around.

 

[NuclearFusi0n]

Do you have AIM or ICQ or something? you seem knowledgeable about this sorta stuff.

 

[Kenazo]

great drawing. just get a check valve and then use any household vacuum.

 

[KenGr]

I'm having a little trouble understanding what you are trying to do, but why wouldn't you just use a vacuum pump? Vacuum Pumps come in all sizes and capacities and are commonly used in all kinds of applications, from drying and evacuating auto air conditioning systems to removing air from huge power plant condensers. Here's a supplier: BesTech

 

[Demon-Xanth]

<-- at work right now.

 

[loup garou]

Jeez, you're so obvious. Just do it the way everyone else does with a two liter cut in half and some water.

 

[NuclearFusi0n]

Originally posted by: KenGr
I'm having a little trouble understanding what you are trying to do, but why wouldn't you just use a vacuum pump? Vacuum Pumps come in all sizes and capacities and are commonly used in all kinds of applications, from drying and evacuating auto air conditioning systems to removing air from huge power plant condensers. Here's a supplier: BesTech

What I'm trying to do: http://pics.apartment808.com/users/NuclearFusi0n/boooooaz.gif
The red is a chemical fog, and basically I want to have it "pushed out" in one fast large push, instead of a slow pumping action.

 

[NuclearFusi0n]

Originally posted by: werk
Jeez, you're so obvious. Just do it the way everyone else does with a two liter cut in half and some water.

LOL, sorry wrong answer, come again next time :Q

 

[MichaelD]

Originally posted by: NuclearFusi0n

Originally posted by: KenGr
I'm having a little trouble understanding what you are trying to do, but why wouldn't you just use a vacuum pump? Vacuum Pumps come in all sizes and capacities and are commonly used in all kinds of applications, from drying and evacuating auto air conditioning systems to removing air from huge power plant condensers. Here's a supplier: BesTech

What I'm trying to do: http://pics.apartment808.com/users/NuclearFusi0n/boooooaz.gif
The red is fog is a chemical fog, and basically I want to have it "pushed out" in one fast large push, instead of a slow pumping action.

Cool animation. You get a 9 for creativity.

 

[loup garou]

Originally posted by: NuclearFusi0n

Originally posted by: KenGr
I'm having a little trouble understanding what you are trying to do, but why wouldn't you just use a vacuum pump? Vacuum Pumps come in all sizes and capacities and are commonly used in all kinds of applications, from drying and evacuating auto air conditioning systems to removing air from huge power plant condensers. Here's a supplier: BesTech

What I'm trying to do: http://pics.apartment808.com/users/NuclearFusi0n/boooooaz.gif
The red is a chemical fog, and basically I want to have it "pushed out" in one fast large push, instead of a slow pumping action.

In that case, you need a piston and 2 one-way valves. And I still think you're going to use it for what I think you're going to use it for.

 

[NuclearFusi0n]

Originally posted by: werk

Originally posted by: NuclearFusi0n

Originally posted by: KenGr
I'm having a little trouble understanding what you are trying to do, but why wouldn't you just use a vacuum pump? Vacuum Pumps come in all sizes and capacities and are commonly used in all kinds of applications, from drying and evacuating auto air conditioning systems to removing air from huge power plant condensers. Here's a supplier: BesTech

What I'm trying to do: http://pics.apartment808.com/users/NuclearFusi0n/boooooaz.gif
The red is a chemical fog, and basically I want to have it "pushed out" in one fast large push, instead of a slow pumping action.

In that case, you need a piston and 2 one-way valves.

what kind of a piston should i use? Like, would i be able to get a piston fitted for my own chamber? Where are these piston thingers sold?

and the worst part: how much would it cost?

 

[NuclearFusi0n]

Anybody?

 

[GoingUp]

makin a penis pump eh?

 

[Demon-Xanth]

How much can you do yourself? What volume? What quality? What chemical? How well does it need to seal? What pressure? What flow rate?

Got too many questions so far


For some of the parts, you can probably get some from a junk yard engine and a piece of pipe. Most bigblocks feature bores of well over 4", and thier pistons seal quite well, snag a rod, then all you need to do is makeshift a crank and head w/ valves. A 454@2000RPM really is just a 7400 liter/minute self powered air pump.

 

[SoylentGreen]

"That's not my bag baby"

 

[NuclearFusi0n]

Originally posted by: Demon-Xanth
How much can you do yourself? What volume? What quality? What chemical? How well does it need to seal? What pressure? What flow rate?

Got too many questions so far


For some of the parts, you can probably get some from a junk yard engine and a piece of pipe. Most bigblocks feature bores of well over 4", and thier pistons seal quite well, snag a rod, then all you need to do is makeshift a crank and head w/ valves. A 454@2000RPM really is just a 7400 liter/minute self powered air pump.

Holy sh|t, 7400 liters a minute :Q

I'm thinking more like, press button to go up, press button to go down, with no steady cycle.
I can do some stuff myself I guess, but step by step directions would be nice. Volume should be about .5 to 1.5 L or so. It needs to seal as good as possible i guess. I don't care if microscopic particles get through, but if I see a stream of gas shooting up, that's no good. Pressure? Fairly low pressure, I would guess about 2 to 3 seconds to push all the gas out of the chamber. Hopefully I can adjust the pressure/speed for fine tuning. Lots of questions.

 

[Demon-Xanth]

You can probably make due with an old piston of about 4.5-5" with a similar stroke, and just use a PVC pipe w/ a cap and a pair of directional valves attached via tubed fittings. You'll have to have a linear motor w/ limit switches to make it stop when it's up or down though.

Just find someone rebuilding an engine and get one of his used pistons+ring+rod sets.

 

[NuclearFusi0n]

I need the chamber thinger to be clear, would plexiglass work? How much would that motor run me?

 

[NuclearFusi0n]

Hmmm, idea, note to self: put the intake/outake valves on the piston!

 

[Ronstang]

Explain the exact purpose for this machine please, it still sounds drug related to me.

 

[Demon-Xanth]

I'd advice against the valves being on the piston, as the tubes to/from it would have to move with it. (and yeah, you still haven't explained the application)

 

[NuclearFusi0n]

It's for a building contest for another forum I hang out at - I'll post pics and all that jazz when the contest is over, i don't want ideas leaking.