Bidirectional tidal flow

[golf nut]

Originally Posted by StirCrazy

I am actualy planning this for my next tank.. I have been looking into it for about 4 years now. you need two valves, one pump and a bunch of plumbing to do it right. this also includes drilling both ends of the tank with several holes.

what I am planning is about 6- 1" bulkheads on each end which combine into a manafold on each end. then 2" line splitting to two actuated valves one on the suction side and one on the discharge side of the pump.

with this set up you will actualy get complete lamaner flow across the whole tank so when in operation the bulkheads on one end are the discharge and the ones on the other end are the suction, when the ballvalves change this suction and discharge change ends.

this is the ball valve if you notice the one configeration has no "off" so during change over water flowes through both outlets.
http://www.haywardflowcontrol.com/pd...Way_Valves.pdf

here is the actuator
http://smsnet1.smsmktg.com/~hayward/...s_Actuator.pdf

the only other thing to do would be to come up with a controler that would alternat power on a timed basis to open one as it closes the other, then after a set time reverse the process. this could be done with an adruno based micro processor or what ever.

Steve

This does exactly what you describe with one pump and one valve,same controller as on the previous video, both suction and discharge are reversed as you wanted, I happen to be moving it quicker than advised to show just how much movement can be achieved with just one pump, please remember this video is 5 years old.

http://www.youtube.com/watch?v=rCgLY0baPOk



Paul

[sphelps]

Originally Posted by golf nut

It's a count down timer, when the motor turns and a magnet effects the sensor the power triggers the timer to start counting down and turn the motor off, once time down has occurred power goes to the motor, it turns and when the next magnet is seen it repeats, you can time down anywhere from seconds to weeks depending on the timer used.

Ok I'm still missing something here. It must be more than just a count down timer. If this were the case the drum would rotate until the sensor is triggered and opens a circuit. The open circuit triggers the counter which turns off the motor. OK so far so good but then when the counter stops the sensor is still in the same position and therefore the circuit is still open which will reset the timer. This will continue forever and the drum will never move again. For this system to work that timer must have some kind of algorithm built in, which will either be a delay or something that over rides the sensor until the circuit closes again.

For the system to be reliable a simple a delay won't work. If it's an over ride that's a pretty cool little system. How much would the whole system cost, built and ready to go?

[golf nut]

Originally Posted by sphelps

Ok I'm still missing something here. It must be more than just a count down timer. If this were the case the drum would rotate until the sensor is triggered and opens a circuit. The open circuit triggers the counter which turns off the motor. OK so far so good but then when the counter stops the sensor is still in the same position and therefore the circuit is still open which will reset the timer. This will continue forever and the drum will never move again. For this system to work that timer must have some kind of algorithm built in, which will either be a delay or something that over rides the sensor until the circuit closes again.

For the system to be reliable a simple a delay won't work. If it's an over ride that's a pretty cool little system. How much would the whole system cost, built and ready to go?

It would be a fairly easy DIY mod to a 4 way or 2 way, still will cost $39

[MitchM]

Originally Posted by golf nut

It would be a fairly easy DIY mod to a 4 way or 2 way, still will cost $39

Does the 2-way come in a 2" size?

Monsieur Mitch

[golf nut]

It can do, I need to grab a body or two before they go to the next op and get them finished conventionally.

[madkeenreefer]

Its working for me and I have not had any problems with the time/rotation getting out of sync. But hey whatever works

[sphelps]

Originally Posted by golf nut

It would be a fairly easy DIY mod to a 4 way or 2 way, still will cost $39

So how does it work then? Is it a delay or an over ride? Do you have a link to the count down timer?

[golf nut]

Originally Posted by sphelps

So how does it work then? Is it a delay or an over ride? Do you have a link to the count down timer?

Try this one, I am golfing at the moment , will get more time later.


http://www.airotronics.com/site/cate...solidstate.php