Re: Spring Valve for Inverted 5 Gal Plastic Can

On 14 May, 13:47, Russell <russ...@xxxxxxxxxx> wrote:
mark wrote:

<snip>> planning to make one of these as well.

http://www.youtube.com/profile?user=simplecentrifuge

any idea what rpm the motor should be .

all the best.mark

Depends on the diameter - angular acceleration is given by omega squared
* radius.

So if your bowl was 150mm dia the acceleration (as a multiple of g)
would be

((rpm*2*PI/60)^2*0.075)/9.81

or about 84g at 1000rpm

or about 754g at 3000rpm

Construction of the rotor is a big safety consideration in commercial
centrifuges.

As far as cleaning the oil goes it depends on the size of the particles
you want to remove.

The page referenced by the you tube video has a FAQ which claims
1269.76g at 3450 rpm.

That implies a radius of about 95mm

HTH

Russell

my centrifuge will have this as a base for it ...bowl; diameter 300mm
across at the top.

http://img.photobucket.com/albums/v190/aboard_epsilon/waste%20oil%20burner/bowl.jpg

a very thick plate will be attached to the bottom ...
this will house the motor mounts and central rotor and seal.

I'm still looking around the scrap yards for something suitable for
the central rotor ...
maybe aluminium brake drum .
turning it from solid will be too expensive ..
something will turn up

I guess it will be about 150 to 200 mm to fit within stainless sink
bowl
I have both single phase 1200 ish rpm motors to 3400 ish rpm
motors ..here somewhere.

all the best..mark


.

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