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Old 11-13-2012, 02:19 PM   #1
southpawbrasserie
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Default Home Malt House Equipment build

I am in the process of designing a piece of equipment that will be used for malting barley, or grain for that matter. I haven't drawn any blueprints yet but when I do, I will post them. I have searched the internet for any ideas or even if there is equipment that is manufactured for "small scale" or home malting. I have came up with nothing. So if anyone knows of any such equipment, please let me know.

To get your head wrapped around what I have in mind...I want to have a vessel that is around 2'-4' in diameter and around 2' deep. It will have a false bottom made from the perforated sheet that is used for mash tun false bottoms. It will be "slighty" tilted and have a drain to one side with a solenoid ball valve. It will have a spinning shaft in the middle with 2 arms and 8-10 total "little plows" to stir the grain (similar to the stirring arms in coffee roaster drop trays). Also, higher on the shaft it will have another set of arms with spray bars to keep the grain moist. The shaft will rotate from a gear motor on the underside of the vessel. A tube will run through the middle of the shaft for the spray bars. I am unsure as to exactly what I will use to connect the rotating tube on the shaft and the stationary tube on the underneath side of the vessel as well as will the gear motor be in the way for this water tube. So any suggestions will help! But from there I will have an inline pump then a solenoid valve. A standard water hose will attach on the side but underneath the vessel that runs to the solenoid valve. Last, I will have legs to make it about waist high and a cover or lid to keep out unwanted's. If I cannot find a way for the water tube to connect on the underneath side with the gear motor in the same spot, I will go with the water tube running up the outside (or inside) of the vessel and have the water come in from the top to the spray bars.

As far as the solenoid valves, pump and motor...I will have a control box with 3 separate timer's, some kind of PID timer's if they exist...One for the motor, one for the drain and one for the water pump & spray bars. Along with that, I will have the drain solenoid and spray bar/water in solenoid. Also, I will have bypass buttons for each, so instead of setting the timer to make it run during manual cycles or cleaning, I can just turn a switch of hit a button. I want to install a glycol system around the vessel to control the temperature for the steeping and germinating stages with the temperature controller in the control box, and last install an aeration coil that is in the false bottom void but has a connection that runs to the top of the vessel, or mid way just somewhere above the level of the water while soaking, to avoid draining while connecting an aeration pump.

I would like to find SS sheets that I can stick weld to make the vessel, along with all of materials. If I can't find SS materials that I can stick weld, I will consider looking for an already built vessel and go from there.

So does any have any comments or suggests? What speed should the shaft/arms turn, and what kind of motor? Since it will be under a small load, I would think I need some kind of motor with torque. What kind of pump should I use? I'm thinking of a march pump, but this is not necessary since the water won't be hot. Can you think of a vessel around this size and capable of adding the mentioned items/materials? And a "big one" is building the glycol system. I have seen somewhere recently that someone built a system with a picnic cooler as the glycol holding tank, but I am unsure. Can someone help in this department? I have never researched it. Anywho, thanks!

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Old 12-04-2012, 01:13 PM   #2
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I would have thought someone would weigh in on this topic by now. I find great interest in malting and would have thought there are others. At least someone to critique my equipment design...

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Old 12-04-2012, 01:23 PM   #3
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Holy cow. How are you planning on kilning that much malt?

I think you're not getting any comments because this goes way, way beyond most DIY projects. You're planning on being able to make caramalts, etc? Pretty ambitous.

Good luck, I hope you pull it off.

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Old 12-04-2012, 01:59 PM   #4
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Ya, best of luck for sure! Someone has to pave the way, and in this case, I think it's you! I think we'd all be very interested to see what you can come up with.

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Old 12-04-2012, 02:03 PM   #5
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I guess I CAN weigh in on the glycol chiller part. I recently built a glycol chiller, but just haven't used it on a beer yet. Used an AC unit with the cooling fins bent down into the cooler below. Running it through the coils, I think we got the coils down to 26°F and with just the AC going, we got the bath down to 19°F. Should work really well. I have a 300W aquarium heater that I plan to use in the winter.

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Old 12-04-2012, 03:53 PM   #6
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A system to measure as well as control the humidity and moisture content of the grains as they progress through the entire process.
From what I have read the moisture of the grain and how it is eventually dried plays a very important part in producing a malt.

OMO

bosco

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Old 12-07-2012, 06:05 PM   #7
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TNGabe- Right now I have a 2'X2' cubed oast with 4 racks. I can kiln about 15-20 lbs at a time. I will be build a bigger oast with the build of this equipment. I already make caramalts, base malts, highly kilned malts, kilned malts. I can make every variety malt very close if not exact to the commercial examples.

mpcluever- I'd like to know more and see some pictures if you can? I'm not very spun up on glycol systems, but when the time comes, I'll brush up on it.

boscobeans- Very true. I think I have the process down though.

When I make this equipment it is going to reflect my current process, just on a bigger, more advanced and less physical work scale. I've made numerous batches of malt with great success. For example, I made a BIAB batch with 100% wheat malt, and used an online recipe builder. The recipe I put together had something like a 78% efficiency with an OG:1.050. (my first BIAB, so I wasn't sure where to start on efficiency) When I took the grav, I had hit 1.056, so I think not only the malt I made but the process I conducted with this brew were pretty darn good.

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Old 12-07-2012, 09:01 PM   #8
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Quote:
Originally Posted by southpawbrasserie View Post
TNGabe- Right now I have a 2'X2' cubed oast with 4 racks. I can kiln about 15-20 lbs at a time. I will be build a bigger oast with the build of this equipment. I already make caramalts, base malts, highly kilned malts, kilned malts. I can make every variety malt very close if not exact to the commercial examples.

mpcluever- I'd like to know more and see some pictures if you can? I'm not very spun up on glycol systems, but when the time comes, I'll brush up on it.

boscobeans- Very true. I think I have the process down though.

When I make this equipment it is going to reflect my current process, just on a bigger, more advanced and less physical work scale. I've made numerous batches of malt with great success. For example, I made a BIAB batch with 100% wheat malt, and used an online recipe builder. The recipe I put together had something like a 78% efficiency with an OG:1.050. (my first BIAB, so I wasn't sure where to start on efficiency) When I took the grav, I had hit 1.056, so I think not only the malt I made but the process I conducted with this brew were pretty darn good.
This is hardcore. Do you have any pictures?
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Old 12-22-2012, 11:00 PM   #9
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I don't have any pictures atthe moment. I haven't started the build. I have an unexpected move in the next few months so when I get settled in I'm going to start the build and will post pictures at the soonest available time...

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Old 05-09-2013, 05:48 PM   #10
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Southpaw have you started your move yet? I can hardly wait for an update on your malt house build. Moving is so consuming though. It sometimes takes months to get everything set up again and get "settled in".

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