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Author Topic: 500 lt tank as a Processor  (Read 42274 times)

Offline K.H

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Re: 500 lt tank as a Processor
« Reply #60 on: May 12, 2012, 10:01:10 PM »
The cap has a hole in it,fed up with switching the pump off and forgetting the sight valve is open,then watching a jet of oil shoot skywards - i use the sight valve to introduce air when dewatering
The big valve on the left needed to be above the take off to the wash tank,took me about 4 hours to spot it,RM about 30 bleedin seconds!
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Offline Rotary-Motion

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Re: 500 lt tank as a Processor
« Reply #61 on: May 12, 2012, 10:07:46 PM »
Quote from: Julian on May 12, 2012, 09:55:22 PM
Got me beat I'm afraid ... not too easy to see minor details from the photos.

Only possible issue I can see is the sight tube seems to be capped off, but knowing you there's a very good reason for that.

yeah i saw that but knowing K's professionalism i didnt want to offend...  :-X
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Offline Julian

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Re: 500 lt tank as a Processor
« Reply #62 on: May 12, 2012, 10:09:39 PM »
No missed it completely!

Would a larger diameter tube solve the problem?  I have a funnel on my sight tube and constantly use it for returning samples and 3/27s, back to the processor.  Couldn't do it so easly with such a small tube.

Just one thought with the pump, and I'm not familiar with that design, but might it trap glycerol in the housing?  If so, can you spin the suction pressing 180°?
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Offline Rotary-Motion

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Re: 500 lt tank as a Processor
« Reply #63 on: May 12, 2012, 10:14:01 PM »
Quote from: K.H on May 12, 2012, 10:01:10 PM
The cap has a hole in it,fed up with switching the pump off and forgetting the sight valve is open,then watching a jet of oil shoot skywards - i use the sight valve to introduce air when dewatering
The big valve on the left needed to be above the take off to the wash tank,took me about 4 hours to spot it,RM about 30 bleedin seconds!

how does turning pimp off force a jet out site tube? cant get me head round that?
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Offline Julian

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Re: 500 lt tank as a Processor
« Reply #64 on: May 12, 2012, 10:19:47 PM »
Probably hydraulic shock of oil/bio dropping back down the discharge pipe.

A non return valve in the discharge pipe might sort it too.
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Offline Rotary-Motion

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Re: 500 lt tank as a Processor
« Reply #65 on: May 12, 2012, 10:23:46 PM »
Quote from: Julian on May 12, 2012, 10:19:47 PM
Probably hydraulic shock of oil/bio dropping back down the discharge pipe.

A non return valve in the discharge pipe might sort it too.

good idea - is the pump self priming against not? being a puller not a pusher?
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Offline K.H

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Re: 500 lt tank as a Processor
« Reply #66 on: May 12, 2012, 10:24:22 PM »
Quote from: Julian on May 12, 2012, 10:09:39 PM
No missed it completely!

Would a larger diameter tube solve the problem?  I have a funnel on my sight tube and constantly use it for returning samples and 3/27s, back to the processor.  Couldn't do it so easly with such a small tube.

Just one thought with the pump, and I'm not familiar with that design, but might it trap glycerol in the housing?  If so, can you spin the suction pressing 180°?
Only a small amount from whats in the pipework after the isolating valve but the pump has a reverse so i can shoot it back into the processor
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Offline K.H

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Re: 500 lt tank as a Processor
« Reply #67 on: May 12, 2012, 10:26:51 PM »
The sight pipe just refills as it normally would but just quickly,its not really an issue the little cap stops it
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Offline Rotary-Motion

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Re: 500 lt tank as a Processor
« Reply #68 on: May 12, 2012, 10:29:32 PM »
may have it? due to the ferocity of the pump and pipe dia, the contents after turn off and the oil returning to level drops fast due to vast volumes of liquid thrown into main tank, so a sort of hydraulic push as brtp states occurs and the only place to go is an open site tube, (a venturi of sorts) how the romans transfered water by GRAVITY up hill! velocity = mass X momentum.
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Offline K.H

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Re: 500 lt tank as a Processor
« Reply #69 on: May 12, 2012, 10:31:15 PM »
Spot on,better description than anything i could come up with
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Offline Julian

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Re: 500 lt tank as a Processor
« Reply #70 on: May 12, 2012, 10:34:43 PM »
Quote from: K.H on May 12, 2012, 10:24:22 PM
the pump has a reverse so i can shoot it back into the processor

Wa'ss that all about then?

Only pump I know that will, theoretically, pump backward is a Mono, but I don't think even they will do that in practice as the rotor will unscrew on some models.
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Offline Julian

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Re: 500 lt tank as a Processor
« Reply #71 on: May 12, 2012, 10:35:48 PM »
Quote from: Rotary-Motion on May 12, 2012, 10:29:32 PM
may have it? due to the ferocity of the pump and pipe dia, the contents after turn off and the oil returning to level drops fast due to vast volumes of liquid thrown into main tank, so a sort of hydraulic push as brtp states occurs and the only place to go is an open site tube, (a venturi of sorts) how the romans transfered water by GRAVITY up hill! velocity = mass X momentum.

Yes, as Keith says, spot testicle on, great description.
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Offline K.H

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Re: 500 lt tank as a Processor
« Reply #72 on: May 12, 2012, 10:41:29 PM »
Quote from: Julian on May 12, 2012, 10:34:43 PM
Quote from: K.H on May 12, 2012, 10:24:22 PM
the pump has a reverse so i can shoot it back into the processor

Wa'ss that all about then?

Only pump I know that will, theoretically, pump backward is a Mono, but I don't think even they will do that in practice as the rotor will unscrew on some models.
Dont really know,but its good fun messing about
Its the S/S AL50 here
http://www.marcopumps.gr/en/catalog/01-surface/tellarini.html
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Offline Rotary-Motion

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Re: 500 lt tank as a Processor
« Reply #73 on: May 12, 2012, 10:43:57 PM »
 8) i have my moments, sometimes detromental to my well being, but its what makes me human (i make mistakes)

 ;)
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Offline K.H

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Re: 500 lt tank as a Processor
« Reply #74 on: May 12, 2012, 10:45:56 PM »
I wonder if im brave enough to post the build up on the VOD
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