tegwin
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| posted on 13/5/13 at 03:05 PM |
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Creating vacuum from pressure
Any cunning folk ever seen a device that enables you to convert compressed air (from a compressor) into vacuum?
I need to do some manual pick and place so need a very small amount of vacuum to pick components up... Only issue is I don't have a pump and
don't want to pay big bucks for one...
I know it will be inefficient converting pressure to vacuum but it must be possible!?
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Would the last person who leaves the country please switch off the lights and close the door!
www.verticalhorizonsmedia.tv
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liam.mccaffrey
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| posted on 13/5/13 at 03:12 PM |
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search for vacuum generators
HTH
Build Blog
Build Photo Album
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sprouts-car
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| posted on 13/5/13 at 03:14 PM |
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what about something like this?
18"'HG 12V DC Vacuum Pump → Hobby Lab Projects Wet or Dry | eBay
[Edited on 13/5/13 by sprouts-car]
Build blog
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hughpinder
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| posted on 13/5/13 at 03:27 PM |
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Isn't that how a spray gun/sand blaster picks up the paint/sand? If your need is 'small' enough you may be able to adapt one of
those? (Or pinch the hoover)
Regards
Hugh
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tilly819
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| posted on 13/5/13 at 03:30 PM |
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Venturi Principle
Tilly
[Edited on 13/5/13 by tilly819]
F20C Haynes roadster 440 BHP/Tonne www.youtube.com/handmadeextreme
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owelly
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| posted on 13/5/13 at 03:48 PM |
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http://pages.ebay.com/link/?nav=item.view&id=110693154237
http://www.ppcmag.co.uk
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matt_gsxr
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| posted on 13/5/13 at 04:15 PM |
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http://www.vaccon.com/Venturi-vacuum-pumps.aspx
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John P
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| posted on 13/5/13 at 04:18 PM |
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Used these in the past. Good but noisy.
http://www.brauer.co.uk/aluminium-alloy-adjustable-airmovers-s264.aspx
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Phil.J
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| posted on 13/5/13 at 04:40 PM |
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Many years ago you could buy a car vacuum cleaner that ran from the exhaust tailpipe, working on the venturi principle.
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robocog
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| posted on 13/5/13 at 05:42 PM |
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I looked into it and gathered some simple plans with rough dimensions for building a suitable venturi for use with an air comressor
My idea was to build something to assist with brake bleeding/oil extraction ...that kind of thing
Buggered if I can find the info now..
Will keep looking as I know I have them here somewhere
Regards
Rob
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britishtrident
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| posted on 13/5/13 at 05:44 PM |
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quote:
Originally posted by Phil.J
Many years ago you could buy a car vacuum cleaner that ran from the exhaust tailpipe, working on the venturi principle.
You could also buy one that ran of compressed air, no moving parts but it made a hell of an noise.
[Edited on 13/5/13 by britishtrident]
[I] “ What use our work, Bennet, if we cannot care for those we love? .”
― From BBC TV/Amazon's Ripper Street.
[/I]
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Dualist
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| posted on 13/5/13 at 05:51 PM |
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Used vac gens on numerous projects with robots, hope what you are lifting isn't too porous and you will need to get massive on the generator.
If you are lifting different sized items look for a 'Schmalz gripper' it uses a large pad with little valves that cut of small ports that
aren't covered by the item you are picking up so you don't loose any vacuum.
Rotary build coming soon...
quote:
Originally posted by RichardK
I recently discovered that pigs can p i s s sideways when being transported 
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plentywahalla
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| posted on 13/5/13 at 06:30 PM |
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When you say a small amount of vacuum, do you mean low negative pressure or low volume?
How about an old turbo? ... Low pressure but big volume
Rules are for the guidance of wise men ... and the obedience of fools. (anon)
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rick q
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| posted on 14/5/13 at 04:55 AM |
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Just borrow the home vacuum cleaner or get one of those cheap 12V car vacuum cleaners ...... and work from there.
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Litemoth
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| posted on 14/5/13 at 08:05 AM |
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I've seen aquarium pumps used for pick n place ...?
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off-road-ham
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| posted on 14/5/13 at 12:15 PM |
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Sealey Brake &' Clutch Fluid Bleeder Vacuum Type 1ltr VS020 Brand New | eBay
this is for brake and clutch bleeding (I have a similar 1) creates vacuum from air compressor.
usefull to have on its own.
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dave r
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| posted on 14/5/13 at 05:13 PM |
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fridge compressor?
I'd love to give my imaginary friend a great big hug,
but this jacket makes it impossible.
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NigeEss
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| posted on 14/5/13 at 05:32 PM |
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Have a look here
Venturi
Time is an illusion. Lunchtime doubly so.................Douglas Adams.
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johnny chimpo
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| posted on 14/5/13 at 05:33 PM |
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What kind of pressure are we talking about, how many kpa?
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