Hey guys, this is Jason with Mount Baker Mining and Metals and the 34 by 24 hammer
mill behind me is getting buttoned up and ready to ship, so I want to take a
quick video and show you guys the insides of the machine and how it works.
So this is the hammer mill with the lid off, this is our 34 by 24 hammer mill. And
I wanted to show you the guts of this thing before we shipped it off here.
These are the hammers, and we've run several tons of material through this -
copper, brass, aluminum, computer parts electronics, all sorts of stuff. And the
wear is is very minimal. The hammers are still in great shape, you can see
even the edges are still square and nice and sharp. This is about a two inch by
three and a half inch screen down here, and goes all the way around the the
bottom half of the mill. These rotors here are 3/4 inch thick steel, these are
the pins that hold the hammers on. It's a six inch shaft here that the rotor
assembly is attached to and then the shaft is turned down to a three and a
half inch and then on to these big spherical roller bearings. The pins that
hold the hammers on right here are held in on the sides by these big plates, and
to change the hammers you take off these two bolts, take this plate off, and then
you can pull the pin out, change the hammers and, put the pin back in.
Depending on the application or how fine you're trying to grind the stuff, this
hammer mill can take up to 14 hammers. Right now we have eight hammers, so four
on each side, and they're staggered so you can see the hammers here and
we're we took out the hammers in between because we're doing a fairly coarse
crush and we didn't we didn't need as many hammers. If you're gonna grind
fairly fine, you want more hammers so you do the
full set of 14 in there. Over here is the the drive side.
It's run by a hundred horse electric motor. It's a six belt Shiv here that
gears it down. I think the rotor runs about eight
hundred rpm run by six belts. And we can cut any size screen that you need, we've
made two so far four inch by four inch square hole and then this screen
that's in the mill now. And the mill, the way the screen attaches in the mill is
the armor on the side here holds the screen in place with the radius of the
armor, and then the screen is held in by the lid both on both sides. So when the
lid gets bolted on it holds the screen in place and to change the screen you
just take off the side plates, the armor side plates, and you can grab it here
with a chain and use a crane or a forklift and the screen just rolls out
from under the rotor so you don't need to take the rotor assembly out to change
the screen. Here's a shot looking underneath the hammer mill the screen, so
this is where the material would get crushed and come out the bottom. And this
screen is inch and a quarter thick steel, and then we have big huge ribs on the
back, stiffening ribs, to keep the screen in shape and for its lifetime in the
mill. And then the screen is held on or supported on the edge of the mill by
these big...
crescent-shaped steel pieces that bolt through and give that little lip right
here for the screen to sit on. And there's one on on both sides here that
holds the screen in place. So here's the upper lid for the hammer mill, and this
has half-inch thick walls, it has stiffening ribs on the top and
also on the backside here. And we'll take a look at the inside all the
where services are covered by one-inch thick armor, the heavy wear surfaces, here
the backplate here and then the side is half-inch thick because it wears
less on the side. There's these big carriage bolts that hold the armor in
place. And you can see from the wear that it's it's minimal. This is AR400
abrasion resistant steel and there's there's not even hardly any chips at all
or any dings on the armor at all. So it's holding up very very well to the impacts
inside the hammer mill. So here's the video the 4 inch screen we ran all our
samples through and this screen has had several several tons of material,
aluminium, brass, electronics, computers, all sorts of stuff run through it. And
you can see the the screen is still in great shape it's got a few dings and
dents here and there as to be expected but this is actually one and a half inch
thick steel. And you know the a little bit of wear on the corners of the screen
isn't a big deal because the tolerance is so big, it's four inch by four inch. So
even if it gets rounded out a little bit on the on the surface of the hole it's
not it's not a big problem. So you've got you know hundreds and hundreds of tons
of life in these screens. And then here's the hammers we pulled one out so you can
see. Very very little we're on this hammer,
its drop-forged manganese steel for extra long life, they work harden, and so
you know I think the wear parts, there were some concerns on some of our
earlier YouTube videos about the wear of the machine, but you can see now after
we've run some samples through the through the mill and through the screens
that the wear is pretty minimal, and I think it's gonna last a long long time.
So thanks for watching our video, hope you guys enjoyed it. If you have any
questions or comments please leave us a comment below or you can find our
contact info in the description below. So thanks for watching and we'll see on the
next one.