Bryan's inline heater Project Evolving

all about mashing and fermenting grains

Bryan's inline heater Project Evolving

Postby Bryan1 » Sat Feb 03, 2018 3:16 pm

G'day Guy's,
Where the double boiler idea was a good I did jump in with both barrels but it did seem no bullets were there as I should of read the fine print where 2 different sized boilers were used. :angry-banghead: . Anyway I came across a commercial toaster for free from Recreate where I used the elements out of it to make a heating ring where a 3/4" copper pipe can flow the product thru. So I ventured into the AC world using a 2400 watt Varaic I got off my Dad and never used. I did a youtube video and here it is below

Now after the success of the trial I got onto fleabay to find a PID and found one for $20. :happy-partydance: Where the PID, 40 amp SSR and K type thermocouple on a M6 thread was found in the package.

Well sort of jumping the gun here and before one can even use the PID setup one needs to be able to pump the product through the 3/4" pipe or everything will heat up and burn :law-policered: well a 50 amp breaker will trip and no bunnies will be fried, well maybe a magpie as they are so inquisitive :laughing-rolling:

I do have several gear pumps here where I have used them for pumping water and found the input seal leaked not too badly just a drip but we can't have hot fluid leaking out and rotting the wood base unit can we. I found an old Bronze pump so duly stripped it to find some wear on the sealing surfacing so cleaned off the surface plate anf got to lapping until all the wear and had some flat surfaces for the gears to run. I put the gears in my toolroom lathe gave them a shiver of a cut to true them up. On closing up the pump I found I needed a 20 thou shim and I did have some brass plate so I made one from that. Now as the input seal used a fiber based seal which had hardened over time I retro fitted to use a O-ring seal and machined up some spacer rings so the o-ring seats nicely and hopefully will seal.

Now as my other gear pump used a 1/3 hp 240 volt AC motor that became a donor for powering the pump and if the flow is too great on 240 volts I'll make a circuit where I can use a 5K pot to control the input voltage. A coupling was on the old pump and it did fit the overhauled pump so a new pump base was needed and thats what I made this morning. As I found the height of the pump to motor within a fraction of error was 50mm I daid have a length of 50mm RHS so got to cutting and welded it up using my new Lincoln Caddy welder. I did need to switch it over from tig and set the current to 55 amps for the TC16 2.5 mm welding rods. I did find it was welding hot so turned it down to 40 amps. Now welding 2.5mm TC16's @ 40 amps :scared-eek: :scared-eek: :scared-eek: never done that low on a caddy welder before. So this new Lincoln caddy seem like the bees knees for as it will arc off the inverter. :happy-partydance: :happy-partydance: :happy-partydance: .

I did find after using the 4" angle grinder to cut up the RHS and using the welder to fabricate the pump/motor base frame when I turned on the drill to drill the hole for the mounting pads for the base unit the inverter beeped and did every time I turned on the motor. I seem to think I should change it over to a 3 phase motor and use a vfd so I don't have the inrush current that the inverter hates. Then I can program the vfd to come over the sudden increase of pressure when a drill starts. :happy-partydance:

Anyway I got the pump/motor base mount fabricated and it's now sitting on some twisting wire ready to accept the rest of a black cold gal can of paint. That can has been sitting in my shed for years and I was surprised it had some gas left but now I have enough to do a second coat. :happy-partydance: :happy-partydance: :happy-partydance:

Well one more Lash to drink then the second coat can go on and thats where I'm at at the close of todays work.

Cheers Bryan
Posts: 641
Joined: Thu Oct 31, 2013 6:36 pm
Location: Not far from Kanmantoo SA
equipment: 4" copper bubbler with a setup for Neutral and a thumper for Whisky and my old 5 litre pot for doing maceration runs

Re: Bryan's inline heater Project Evolving

Postby Bryan1 » Mon Feb 05, 2018 8:24 pm

Well guy's got the bronze pump and motor all setup so gave it a test by hooking up the mash tun filled with water to the pump and giving it run with the output going straight back into the keg. Used a 1/2" input to the pump and 3/4" outlet and found as the bush's in the pump are grease based it did leak into the water. :angry-banghead: .

O'well it's no good for doing a mash but it will still be good for drying vege oil for the setup I want to make for making my own bio diesel.

So this project is now NOT related to distilling and feel free to delete this thread.

Cheers Bryan
Posts: 641
Joined: Thu Oct 31, 2013 6:36 pm
Location: Not far from Kanmantoo SA
equipment: 4" copper bubbler with a setup for Neutral and a thumper for Whisky and my old 5 litre pot for doing maceration runs

Re: Bryan's inline heater Project Evolving

Postby Fishleg » Mon Feb 05, 2018 9:09 pm

Mate you've been as busy as a cat burying shit on concrete.
Sorry to hear your project didn't work out as planned.
Posts: 274
Joined: Sun Mar 19, 2017 5:42 pm
Location: Canberra
equipment: Still spirits 25l reflux
Home made keg based 2 inch pot into 2 inch shotgun
2 inch by 1m column CM reflux w/2 inch shotty RC and PC.

Re: Bryan's inline heater Project Evolving

Postby bluc » Mon Feb 05, 2018 9:45 pm

Yea bummer sounded like a good idea. I have seen people making rims tubes with externally wrapped heat tape rather than an internal element. Bit like a small herms setup :handgestures-thumbupleft:
Posts: 5098
Joined: Tue Apr 14, 2015 5:47 pm
Location: sunshine coast
equipment: 2" pot with 2" shotty 400mm long 5x 1/2" on a t500 boiler.
50l keg boiler no bells or whistles..
3 plate 4" bubbler

Re: Bryan's inline heater Project Evolving

Postby A&O » Mon Feb 05, 2018 10:22 pm

I wonder if you could convert the greased bushes to a water lubricated bush? Probably depend on RPM of the pump and if the bush remains submerged.
Posts: 244
Joined: Tue Aug 15, 2017 6:01 pm
Location: Albany, WA
equipment: A left & right hand with a soon to be built shed, so as new as they come.

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