Auger Fed Bin

Auger Fed Bin

PostBy: northernmainecoal On: Tue Mar 25, 2014 8:05 am

I've started building a bin that will hold about 3 tons. I have a 4" grain auger located in the bottom of the bin to feed the hopper my EFM feeds from. The grain auger has a 1hp farm duty motor on it, is it going to be able to start turning with that much weight on it?? Or do I need to build some sort of V thing over the top of it to limit the weight?
Thanks
Rob
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northernmainecoal
 
Stoker Coal Boiler: EFM 520
Hand Fed Coal Stove: Hitzer 30-95
Baseburners & Antiques: Herald Baseheater #6
Coal Size/Type: Rice/Nut/Stove

Re: Auger Fed Bin

PostBy: lzaharis On: Tue Mar 25, 2014 11:02 am

northernmainecoal wrote:I've started building a bin that will hold about 3 tons. I have a 4" grain auger located in the bottom of the bin to feed the hopper my EFM feeds from. The grain auger has a 1hp farm duty motor on it, is it going to be able to start turning with that much weight on it?? Or do I need to build some sort of V thing over the top of it to limit the weight?
Thanks
Rob

===================================================================================================


Hello Rob,

About your bin;


Is the discharge end secured solid at the head end?
I ask because an uager will want to dig in to the pile.

The other issue is the bin bottom, please fo not take this as a
critisism, but with my experience in mining and bins the issue is
always what is refewrred to as the draw point.

In following EFM's excellent drawings you need to raise the bin up to
make a modified dog house and leave the auger totally exposed in the
pile rather than drawing it down to the base of the inverted pyramid.

As the auger is unguarded it will want to dig and dig and dig rather
than just auger because it has no cage to keep it off the floor as the
auger will want to pull the tube and auger down even with the hole
in the front.

I would raise the bin a foot above the auger and block it up and then
attach the auger tube to the sides with pipe strap to hold it up above
the floor about a foot to reduce any stress on the auger and tube OR
simply raise the auger and the bin in a one foot increment and sacrifice
the coal below it to to simply create a pile below the auger allow it to run
trouble free.

It works with grain and always has worked to convey small granular materials
creating a permanent pile to feed the auger.
.

As it is the amount of restriction created by the inverted cone at the bottom will
create a lot of grinding as the coal is drawn down.

.
lzaharis
 
Stove/Furnace Make: Switzer
Stove/Furnace Model: CWW100 100,000 btu

Re: Auger Fed Bin

PostBy: northernmainecoal On: Tue Mar 25, 2014 11:22 am

I appreciate any input I can get, thank you. Although I'm not sure I follow you entirely:) the pickup end of the auger has a bracket on the outside of the bin that will prevent the auger from digging any further into the bin. I will probably also add some metal strap to secure it further the discharge end of the auger will be secured (just haven't done it yet).
As I'm typing I think I'm understanding more of what your saying. Would adding a small upside down V-shaped structure above the auger that would still allow coal to flow around it but would keep the bulk of the pressure off the screw accomplish the same thing as lifting the cone?

Edited to add: The auger enters the bin about 8" from the floor with the bottom of the tube resting on the bin wall so it can't be pulled any lower. when I first started to build this I had planned on raising the cone and building a box underneath for the auger to sit in, but as I built the cone I couldn't and still don't understand the difference between what I've done and putting a box on the bottom of the cone for the auger to go in...maybe I'm just dense:)
northernmainecoal
 
Stoker Coal Boiler: EFM 520
Hand Fed Coal Stove: Hitzer 30-95
Baseburners & Antiques: Herald Baseheater #6
Coal Size/Type: Rice/Nut/Stove


Re: Auger Fed Bin

PostBy: McGiever On: Tue Mar 25, 2014 12:27 pm

Look at "dog house" as used here.
McGiever
 
Stoker Coal Boiler: AXEMAN-ANDERSON 130 "1959"
Hot Air Coal Stoker Stove: HARMAN MAGNUM
Hand Fed Coal Stove: RADIANT HOME AIR BLAST
Baseburners & Antiques: OUR GLENWOOD 111 BASEBURNER "1908"
Coal Size/Type: PEA / ANTHRACITE, NUT-STOVE / ANTHRACITE
Other Heating: Ground Source Heat Pump
Stove/Furnace Make: Hydro Heat /Mega Tek

Re: Auger Fed Bin

PostBy: Lightning On: Tue Mar 25, 2014 6:21 pm

I posted on the other thread where you also had a picture of this.
I'm worried about the support going on there..

COAL BIN Pics
Lightning
 
Hand Fed Coal Furnace: Clayton 1537G
Coal Size/Type: Nut/Stove Size Mix

Re: Auger Fed Bin

PostBy: northernmainecoal On: Mon Dec 29, 2014 10:14 am

I've filled and emptied this bin 3 times now. Without having to touch the coal at all I can auger out all but 30-40 lbs of coal. I would like to increase the capacity at some point but for now this is working just fine. As far as the auger starting when the bin is full that hasn't been an issue either (as long as the belt is tight enough) :D
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northernmainecoal
 
Stoker Coal Boiler: EFM 520
Hand Fed Coal Stove: Hitzer 30-95
Baseburners & Antiques: Herald Baseheater #6
Coal Size/Type: Rice/Nut/Stove

Re: Auger Fed Bin

PostBy: lzaharis On: Mon Dec 29, 2014 10:59 am

This will help you,

you can take a small can and cut it in half length wise and then place it on the
auger tube and surround it with a large pipe clamp to secure it to the shell and you can reduce the
strain on the drive train of the auger and the V belt at start up.

You might have to run it a bit longer but the reduction in coal entering the auger base will allow it to
operate at a lower amperage and the auger will not stall due to the smaller amount of coal entering the
auger at one time.
lzaharis
 
Stove/Furnace Make: Switzer
Stove/Furnace Model: CWW100 100,000 btu