Sciencemadness Discussion Board
Not logged in [Login ]
Go To Bottom

Printable Version  
Author: Subject: overhauling a diaphragma-pump
nightflight
Hazard to Self
**




Posts: 82
Registered: 23-5-2006
Member Is Offline

Mood: pyrophoric

sad.gif posted on 14-2-2007 at 08:44
overhauling a diaphragma-pump


Hi,

I´ve recedntly tried to estimate the vacuum my pump pulls,
after hearing some strange sound coming from it during destillation -which could of course have been through fumes being pumped.


But boiling water under reduced pressure shew only 80°c which is much less, than the 220torr it pulled at the beginning, which again also isn´t very satisfiying, but better than nothing.

Are there any tricks, how I could get this pump working more efficiently?
View user's profile View All Posts By User
Fleaker
International Hazard
*****




Posts: 1244
Registered: 19-6-2005
Member Is Offline

Mood: nucleophilic

[*] posted on 14-2-2007 at 11:40


Hm, perhaps add new oil and if you were distilling something noxious without a trap then you likely corroded away the insides of your pump.

Edit:

Oh I know it's not a rotary vane pump XxDaTxX, but there are types of diaphragm pumps that use hydraulic oil to push the pistons, some use compressed air. I have one such that is from Wilden (using compressed air).

;)

Here's the link: http://www.wildenpump.com/

They have FAQs and a page on how to take apart the pump.

[Edited on 15-2-2007 by Fleaker]




Neither flask nor beaker.


"Kid, you don't even know just what you don't know. "
--The Dark Lord Sauron
View user's profile View All Posts By User
XxDaTxX
Hazard to Self
**




Posts: 66
Registered: 12-3-2006
Member Is Offline

Mood: No Mood

[*] posted on 14-2-2007 at 17:03


Quote:
Originally posted by Fleaker
Hm, perhaps add new oil and ....


Want to volunteer your diaphragm pump? Sounds like a plan.... let me know how that goes .... LOL
View user's profile View All Posts By User
chemrox
International Hazard
*****




Posts: 2956
Registered: 18-1-2007
Location: UTM
Member Is Offline

Mood: LaGrangian

[*] posted on 16-2-2007 at 20:15


Have you inspected the diaphragm? Could it have gotten perforated by one of the agents? I destroyed a bunch of rubber making an acid chloride...I expected to but some things are labile to attack..don't know what those diaphragms are made of..
View user's profile View All Posts By User
Fleaker
International Hazard
*****




Posts: 1244
Registered: 19-6-2005
Member Is Offline

Mood: nucleophilic

[*] posted on 16-2-2007 at 21:52


Depends on the type of pump and how much it cost. The pump I have has a PTFE diaphragm so it is resistant to chemical attack and has good temperature range. From teflon/PTFE it just goes down hill in my opinion. If he knows the maker of the pump he should be able to take it apart and either replace the liner in the diaphragm or look for obstructions.



Neither flask nor beaker.


"Kid, you don't even know just what you don't know. "
--The Dark Lord Sauron
View user's profile View All Posts By User

  Go To Top