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Anonymous Poster

How to increase the vacuum pressure using venturi ejectors

02/03/2011 12:23 PM

Dear forum members,

I am using an Venturi ejector to create vacuum for testing of tank bottom plate welds using vacuum box, in which i am getting only 0.4 bar pressure instead of 0.7 bar pressure. I thing I need to change the venturi design/ dimension to increase the vacuum pressure.

Venturi inlet size is 3/8", suction size is 1/2", Venturi outlet size is 3/8"

Please provide some venturi design with dimension details to create vacuum of 0.7 bar pressure.

With Regards,

Raj,
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Anonymous Poster
#1

Re: How to increase the vacuum pressure using venturi ejectors

02/03/2011 1:22 PM

Have you considered using the manifold vacuum from an IC engine to get the pressure you require?
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fixitorelse
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Join Date: Aug 2010
Posts: 687
Good Answers: 21
#2

Re: How to increase the vacuum pressure using venturi ejectors

02/03/2011 3:16 PM

Try this it may help you. wikipedia.org/wiki/Orifice_plate -
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Holzfeller
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Hobbies - Musician - New Member United Kingdom - Member - New Member Engineering Fields - Mechanical Engineering - New Member Engineering Fields - Transportation Engineering - New Member

Join Date: Mar 2007
Location: England
Posts: 951
Good Answers: 48
#3

Re: How to increase the vacuum pressure using venturi ejectors

02/03/2011 4:54 PM

Or try this: http://en.wikipedia.org/wiki/Bernoulli%27s_principle
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Anonymous Poster
#4

Re: How to increase the vacuum pressure using venturi ejectors

02/05/2011 3:11 AM

Dear Mr.Raj,

We are dealing with such vacuum ejectors. They are operated by compressed air and they can produce upto -0.94 bar vacuum. If you are interested plz mail me.

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