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Pump Designer on Drugs


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  #21  
Old 10-07-2018, 05:12:46 PM
G.M.Johnson G.M.Johnson is online now
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Default Re: Pump designer on drugs

I'm going with the principal of centrifugal force. Water enters through the middle and by way of centrifugal force, forces the water out of the tubes, to the discharge port. It probably actually made some good pressure believe it or not. Take a piece of copper tube, fill it up with water and then whip it and see how fast the water comes out!
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  #22  
Old 10-07-2018, 05:15:09 PM
Scotty 2 Scotty 2 is offline
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Default Re: Pump designer on drugs

Quote:
Originally Posted by Darryl View Post
I think hydraulic motors are fed from the outer side of the " impeller" to exert the main energy onto the biggest diameter and then be expelled through the center. It might work with pressure from the center but i dont think so.
If it did then it wouldn't be with much force with the head height pressure from an overhead tank. 20' height height is a bit less then 30 PSI though.

Cheers Scott
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  #23  
Old 10-07-2018, 05:45:47 PM
Darryl Darryl is offline
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Default Re: Pump designer on drugs

Centrifugal force is what its all about, there's no doubt but the main thing with any pressure pump is sealing the impeller inlet to the suction pipe as it will just recycle more and more as the pressure goes up
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  #24  
Old 10-07-2018, 06:24:13 PM
typak typak is offline
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Default Re: Pump designer on drugs

Just a type of 'closed impeller' pump? and not a 'open impeller pump' .......
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  #25  
Old 10-07-2018, 10:28:02 PM
DaveMisch DaveMisch is offline
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Default Re: Pump designer on drugs

I agree with Johnson in 21. The impellers don't make any near contact with the sides of the pump. They are throwing the water out by centrifical force putting pressure on the outlet side and a suction on the intake.
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  #26  
Old 10-08-2018, 12:04:40 AM
Darryl Darryl is offline
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Default Re: Pump designer on drugs

It is a centrifugal pump, there is no question about it. It's just a stupid but interesting idea.
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  #27  
Old 12-04-2018, 04:09:32 AM
Scotty 2 Scotty 2 is offline
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Default Re: Pump designer on drugs

So have you tried it out yet Darryl? I'm pretty curious on just how well it pumps.
Cheers Scott
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  #28  
Old 12-04-2018, 01:32:40 PM
Darryl Darryl is offline
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Default Re: Pump Designer on Drugs

Hi Scotty, no,not yet.
In the middle of India at the moment. Seen a thousand real Listers and twice as many Indian copies on the side of the road usually powering compressors . Went past a big farmland in a car and spotted a big Ruston Hornsby pumping water ,just out in the open. Also saw a McDonald road roller still working. Before you ask, I don't have photos because we were in a hurry driving somewhere yesterday and did 800 kms. Will get some though.
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  #29  
Old 12-04-2018, 03:07:42 PM
Scotty 2 Scotty 2 is offline
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Default Re: Pump Designer on Drugs

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Originally Posted by Darryl View Post
I don't have photos because we were in a hurry driving somewhere yesterday and did 800 kms.
For God's sake......don't hit a cow.
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  #30  
Old 12-04-2018, 09:15:54 PM
Ifix71 Ifix71 is offline
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Default Re: Pump designer on drugs

Quote:
Originally Posted by Darryl View Post
The designer didn't know about cavitation, drag and hasn't looked at anyone else's impeller design in my opinion.
I just keep thinking , WHY ?
The liquid being pumped is drawn through the tubes by centrifugal force from the central opening The suction can be quite substantial at higher speeds possibly more efficient and pump at a higher pressure than a traditional centrifugal pump. somebody with more time and a good Calculator can do the math
John
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  #31  
Old 12-04-2018, 10:07:23 PM
Darryl Darryl is offline
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Default Re: Pump Designer on Drugs

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Originally Posted by Scotty 2 View Post
For God's sake......don't hit a cow.
Which God ??
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  #32  
Old 12-04-2018, 11:35:25 PM
Scotty 2 Scotty 2 is offline
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Default Re: Pump Designer on Drugs

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Originally Posted by Darryl View Post
Which God ??
Bundy rum God? Or even that God Stoney

Last edited by Scotty 2; 12-05-2018 at 12:57:59 AM.
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  #33  
Old 12-06-2018, 04:23:11 AM
Oil Power Oil Power is offline
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Default Re: Pump Designer on Drugs

Here is another unusual centrifugal pump. Patent No.4655 taken out in 1886 by John Abraham of Ballarat. It may have never been made or worked. He claimed to be a teetotaler!
Hugh
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