Hydrolic Help for Kalk Paddle Design, PLEASE

[Cathy8424]

I need some help with suggestions as to the degree the blades should be on the paddles for my kalk stirrer to get the best stirring effect for the kalk.

The paddle will be turning clock wise at 60 RMP with a face mount motor mounted in the center of the lid in a 55 gallon barrel.

One set of blades will be as close to the bottom of the barrel as possible and the second set will be near the middle of the barrel.

I am open to suggestions for placement of the paddles as well as the degree the angle of the blades should be.

Here are a couple pictures of how the paddle is made. It is not glued at this point, just stuck together for a visual of what I am trying to do.

http://www.salt-city.org/gallery/files/5/KalkPaddle1-07.jpg

http://www.salt-city.org/gallery/files/5/KalkPaddleB1-07.jpg

Thanks for any input,

Cathy

[Avast Marine]

Holly crappola! 55gallon kalk reactor is going to be large enough 12,000 gallon tank according to my math!!! I realize that is not the input you were looking for ;)

[BeanAnimal]

The greater the pitch the more resistance the paddle will have to overcome and the more of a "whirlpool" effect you will have.

You may want to affice some permanent vanes onto the inside of the drum that are in the reverse flow patter of the paddle. This will force turbulance.

You are mixing to saturate and then shutting down to dose? Or are you trying to mix 24/7 and keep clear saturated water at the top?

[Cathy8424]

BeanAnimal,

Thanks for the input. If I put the bottom paddles at say like 10/2 as if looking at the face of a clock and raise the top paddle to the surfface of the barrel and put those paddles at say 8/4 would that create more turblance? I really don't know how I would affice permanent vanes inside the drum securly enough to serve their intended purpose.

What angles do you think would be the most effictive?

Another thought, the motor is reversible, I could easily hook it to a relay so that half the stirring time is in forward and half is in reverse?

Yes, I am mixing to saturate and shutting down to dose. The dosing pump will be shut off for 10 min. after each stir cycle.

[BeanAnimal]

I honestly do not think it will matter much. I would not glue the wings until you do a few trials and see how it works. My bet is that about any angle will work.


Bean

[Cathy8424]

<a href=showthread.php?s=&postid=8883521#post8883521 target=_blank>Originally posted</a> by dandy7200
Holly crappola! 55gallon kalk reactor is going to be large enough 12,000 gallon tank according to my math!!! I realize that is not the input you were looking for ;)

Actually Dandy, the 55 gallon drum has been working quite well for a 1,000 gallon system, but the maxi-jets that I currently use to stir the kalk barrel with keep shelling the fins on the impellors.

[Cathy8424]

<a href=showthread.php?s=&postid=8883765#post8883765 target=_blank>Originally posted</a> by BeanAnimal
I honestly do not think it will matter much. I would not glue the wings until you do a few trials and see how it works. My bet is that about any angle will work.


Bean Thanks. I figured I would just use silicone first off, then if we need to move them we should be able to put them in a vise and get them apart?

Do you think the top ones pointing down would create more turblance? Or would it be better to leave them all going up since the kalk will settle back down any way?

[Cathy8424]

Here is a picture of the paddle with the pump running. The picture was taken through the hole that was cut for dumping the kalk in.

http://www.salt-city.org/gallery/files/5/KalkS_DSC07947.jpg

It is in plain water, and we could not see any water turbulance at all. We will re-position the blades and add some color to see what the stirring action is.

[goda]

O_O im usualy more fasinated by the equiptments on large setups then teh tank it self.. O_O this deffinily got my attention...

what are yu hooking to it to stir ?

[Cathy8424]

After some serious cussing and discussing, the KICK ARRS Kalk Reactor Stirrer is in Service! :dance:

The blades were set at 40 degrees.

The motor is a 1/5 hp, 115/230 volt, TEFC, 63 rpm 180 in-lbs torque, 3/4" shaft (keyed), from EBay.

I will get up a DIY write up and more pictures ASAP.

Thanks to all for the input!

http://www.salt-city.org/gallery/files/5/11-DSC07952.JPG

http://www.salt-city.org/gallery/files/5/10-DSC07960.JPG

http://www.salt-city.org/gallery/files/5/12-DSC07963.JPG