my diy needle wheel dart pump

[spazz]

<a href=showthread.php?s=&postid=6712910#post6712910 target=_blank>Originally posted</a> by epicentyr
I have a MultiCam CNC at my company. It has a 5' x 10' bed. Oh the projects. who has plans for very large skimmers that would handle the 2000-3000 gal range?

there is one problem with that. its the pumps. there not sequence still dont have there design done and im not selling mine. there is alot more testing that has to be done in order to produce a skimmer using this new idea of supercharging skimmer pumps. i know there are alot of people who want to get ahold of these style of skimmer for there systems because of the energy savings. but the bodys are not designed right either. and the other big problem is the tubes. in my opinion a pvc skimmer is not as ecffecient as a clear acrylic skimmer because you cant se what is going on inside the main chamber. turbulance is a huge factor in skimmer performance. i found this out with the big ugly. i think the big ugly is only performing at about 50% of it true abilitys because of 3 things. 1. the diam of the tube is too small for the amount of air injected into it. 2. the riser needs to be about 50% larger in diameter. 6"-8" diam riser would be best for that amount of air. 3. the cone plays a major factor in the skimmers ability to transfer the protiens up to the riser with out being disturbed. any flat surface in the path of the rising bubbles will cause them to burst. then the grip on the protiens are lost. so your only getting half of the protiens to the surface to make the head of foam.
i know there are alot of people who will disagree with my theories but after all the tests that i have done with "the big ugly" these have become more facts than theories. as a group we should descuss these theroies and come up with a good design that wont break the bank to build. the hart of the skimmer can be based off the dart needle whell for now and if sequence has a better design that they sell we can figure that in later. but the body is a long way from perfect and needs the most attention to improve the performance.

also im not sure if you guys have been following the 1700g sting ray reef thread lately, but energy is having some issues going on with his system. he is having some corals rtn on him. this is very disturbing to me and if anyone has any ideas as to why this is happening i would like some opinions posted.

thanks spazz

 

[szeth13]

a friend of mine ordered the coralife super skimmer 210 (i think). and the pump wasen't pulling enough air, so i also had the idea to use an air pump (before i knew of this thread). i have not measured anything because i didn't think the idea was anything special. i just went by what i saw. the skimmer isn't working its best ONLY because this friend doesn't listen to me when i say his skimmate should be darker. so now he gets a 2 liter soda bottle a day of SUPER watered down skimmate. if that bad boy was at my house ohhhh i wonder what it could do on my 20.


i also wonder what big ugly could do on my 20. when you lookup over kill in the dictionary, that is what you would see. a pic of big ugly on my 20 gallon tank.

 

[tinygiants]

Hey Spazz,
I'll disagree with point #1. From a theoretical standpoint you were still below the 13% saturation level of air to water. That ratio is independant of height. Your shape may/may not have caused problems, but I do not believe it was to much air for the size.
Dale

 

[spazz]

<a href=showthread.php?s=&postid=6714988#post6714988 target=_blank>Originally posted</a> by tinygiants
Hey Spazz,
I'll disagree with point #1. From a theoretical standpoint you were still below the 13% saturation level of air to water. That ratio is independant of height. Your shape may/may not have caused problems, but I do not believe it was to much air for the size.
Dale

its not so much the saturation of the air to water but its that the pump can still handle a fair amount of air yet. i had 2 pumps hooke up to the skimmer at home and it still didnt cavitate the pump. i think there is a posibility of injecting about 20% more air to the pump and still having the low wattage draw. the only increase in wattage would be with the air pump. so if i got the pump running with the maximum amount of air, the body of the skimmer wouldnt be big enough to handle it. so hence the larger diameter. i feel the 20" diam 4' tall body i want to build to replace big ugly will handle alot more air than big ugly can. it all in the dwell time of the bubbles. im hoping to increase the skimmers capacity with out increasing the wattage too much. and that means a bigger body also. we will have to see. may be im going too far in the size of the body but we will find out. lol

 

[hahnmeister]

Im tellin ya SPazz...you wont EVER cavitate that pump. Its too slow to cavitate.

I have a question on your NW design. Is is a disk+parallel pin design like a BK/Deltec/H&S/Sedra, or is it more of a radial design like a Aqualine/Oceanrunner?

 

[trodder]

actaully I think we got the pump to cavitate before... however I do not remember how.. It may have just been in the process of playing around I think we did it be restricting the output of the pump.... the backpressure could be the cause of the cavitation though with all that air going into it...

 

[trodder]

actaully I think we got the pump to cavitate before... however I do not remember how.. It may have just been in the process of playing around I think we did it be restricting the output of the pump.... the backpressure could be the cause of the cavitation though with all that air going into it...

 

[spazz]

<a href=showthread.php?s=&postid=6715497#post6715497 target=_blank>Originally posted</a> by trodder
actaully I think we got the pump to cavitate before... however I do not remember how.. It may have just been in the process of playing around I think we did it be restricting the output of the pump.... the backpressure could be the cause of the cavitation though with all that air going into it...

no we hooked up the big 160 psi air compressor to it and slowly fed it air. it was kind of funny doing it that way, but it worked.

 

[spazz]

<a href=showthread.php?s=&postid=6715431#post6715431 target=_blank>Originally posted</a> by hahnmeister
Im tellin ya SPazz...you wont EVER cavitate that pump. Its too slow to cavitate.

I have a question on your NW design. Is is a disk+parallel pin design like a BK/Deltec/H&S/Sedra, or is it more of a radial design like a Aqualine/Oceanrunner?

it can be cavitated with a big enough air pump. lol

its kind of like the sedras but different.

 

[spazz]

well after alot of thought i will post a picture of my design. im sure there are alot of people who want this design and will profit from it but o well. i will never see any of it. so here it is. dont ask how i made it. i did it in a way that is not very safe to do. but it will give you an idea of the hart of the big ugly.

 

[alpine]

More pics of the nw please.great design by the way.

 

[ChemE]

Spazz,

I'd recommend trying a version with square stock as the needles. Super high shear mixers in the chemical processing industry use blunt edges rather than rounded. This produces tremendous shear at the leading edge which would really shread the air. You will probably see power consumption go up and mean bubble diameter go way down.

Thanks for all your work in this area, I'm sure we will all benefit in time.

 

[RGibson]

How did thay put the square stock in a round hole?

 

[spuzio]

I have to say that is a great looking impellar for being a one off. What material did you use to create the impellar?

 

[JustOneMoreTank]

Great looking NW spazz... that is exactly how I thought that it would look

 

[spazz]

<a href=showthread.php?s=&postid=6716303#post6716303 target=_blank>Originally posted</a> by spuzio
I have to say that is a great looking impellar for being a one off. What material did you use to create the impellar?

its all cast acrylic construction to make it light weight and durable.

 

[spuzio]

when you constructed it, was it one solid piece or is it assembled?

 

[spazz]

<a href=showthread.php?s=&postid=6717208#post6717208 target=_blank>Originally posted</a> by spuzio
when you constructed it, was it one solid piece or is it assembled?

2 main pieces plus all the pins.

 

[spazz]

the reason this is different from other designs is the 2 different pin sizes and the placement is a little different. I feel that the smaller pins on the out side 2 rings give less resistance and reduce the flywheel horse power to turn the impeller. I think there is room for improvement to this design and I plan to work on another version of this design. but I'm also working on another design that is different than this one. it uses a different style of pins but in the basic same design as this. that one was the first design and will remain a secret because if my theory is right it might be patentable.
well let me have it. i want opinions as to how i can better improve this design. i would like to make it more efecient and still be able to force inject the air to it. i think that sequence is monitoring this thread for ideas of how to improve there design. so any imput will help them to come out with a more effecient design that will help all of us build better skimmers in the end.

 

[spazz]

ok now that this design is out of the bag. we need to come up with a design like the ocean runner style of impeller. I have some ideas as to how to build it but im wondering about patent infringement. does some one know if they have a patent on that design? and is it patented over here in the USA? I don't even want to touch it if there is a patent over here. I cant afford the lawyer fees. :lol: :lol: :lol:

I feel that the ocean runner design is a little better at overcoming the head pressure associated with the eheim/sedra design.


man i love this spell checker. its worth the money not to look as dumb as i am. :lol: :lol: :lol: