res wrote:You could think about using some kind of magnetic stirrer. :think: Kegs are not very magnetic and if you used rare earth magnets I reckon they would grip each other through the keg easily. The big problem I foresee is the friction on each side, you would need some sort of lubrication or a track of ball bearings etcetera. It would work a treat on the bottom of the keg, much earlier to set up, but I guess your on gas. Still maybe you could work something out. There are plenty of magnetic stirring options to take inspiration from, pumps, even them little rubber coated metal things they use in labs and on yeast starters. Good luck buddy, my smoke breaks over. :crying-blue:
kickarum wrote:Hi all
There is a product that will do this job efficiently provided you have a reasonable bearing/bush set up and a top mount for the seal they are known as mechanical seals, I have built and or incorporated these on a large range of mechanical installations the most common being pumps. I'm not much good on computers or I would find a link for you, however a google search of mechanical seals will give you a fairly good idea. The only drawback may be getting a seal made from suitable materials, the seals are generally made of 3 materials which would come into contact with vapour. There is a stationary rubber seal which in this case would be mounted in a stainless stepped bush silver soldered into the top of the boiler inside this rubber is a ceramic ring which works as a thrust washer the sealing is done between faces not diameters hence the need for independent bearings. Then there is a rotating carbon ring rubber mounted on the shaft with a SS spring pushing the carbon down onto the ceramic. Sorry for the long winded shit just trying to explain. If anyone is interested do a search and let me know if you want pics and questions answered.
Cheers Mick.
TheMechwarrior wrote:Brendan,
Have you considered simplifying the situation by using a recirc pump instead?
It will do 9/10th of of the job an agitator will do in reality, without the expense and hassle.
Cheers,
Mech.
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