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American Mine Door
Co.
has two main door designs
available for the Mining
Industry, a
"high-pressure" door
that has been used around the
world for over 50 years and a
new "low pressure" door.
Our “low pressure” doors are a
lighter design and economically
priced for less demanding
applications .
We also offer our popular
Personnel Man Doors.
High Pressure Door
Using a proven and simple
design, our “high-pressure” door
packages are typically used in
high water gauge situations with
high traffic requirements.
AMD Co. calculates the amount
of force placed upon the
proposed door, using water
gauge, height, and width to
determine the amount of torque.
Once we determine the amount of
force (the more surface area and
the higher the water gauge, the
more force required to open and
close the door), we advise each
customer on proposed door
construction (high or low
pressure).
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 Want
to know more?
Low Pressure Door
To fulfill a need from our
customers, American Mine Door
Co. designed a “low
pressure” package that allows us
to cover a greater range of
applications for our customers.
This door package is typically
smaller in width and height from
our “high-pressure” doors, with
less water gauge pressures. Our
“low-pressure” door package was
designed using less materials,
narrower wing panels, and
smaller frames - making this
door lighter in weight and less
costly. The same design
principle is used for both our
door packages. These door
packages can be operated with
air or hydraulics, or also be
manually operated, and can be
controlled with custom PLC
solutions.
Want
to know more?
Custom Controls for Door
Operation (PLC)
 American
Mine Door Co. has the ability to
design and build control systems
to work with your door package.
We can custom design a system
that operates lighting systems
and audible alarms, create door
interlocks (one door cannot open
if another door is open), thru
door scanners (door will not
close on objects), remote
control operation, sonic trip
sensors etc.. We discuss your
unique control needs and assist
you in designing the safest and
most productive systems for your
situation.
Want
to know more?
 Personnel Man
Door
Also offered is a stand alone
“man door” for personnel access
through air locks as well as
other areas where an access way
is required.
This man door operates under the
same principles as our mine
doors, utilizing an opposing
wing design to cancel out the
effects of static pressure. Even
with rather high pressures,
these doors are relatively easy
to open since the pressure
against one door panel is
canceled out by the opposing
door panel.
Want
to know more?
Operation of
the AMD Mine Ventilation Door
Our door wings
open in opposite directions.
This unique design feature
allows our mine doors to
withstand many inches of water
gauge pressure. The same air
pressure that assists the door
in opening also assists it in
closing. Consequently, air
pressure is equalized.
Ramp slope effects are cancelled
as one door wing operating
downhill aids the other wing
uphill. Due to the equal force
principal, our mine doors can be
installed in almost any slope
application.
To assure
maximum lifetime value, our mine
doors are reusable, and can be
easily moved from one location
to another.
Request an AMD Mine Door Quote
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Features of the AMD Mine
Ventilation Door
- Each door is custom
designed to the customer's
specific needs.
- Door size ranges from
5'-0" - 23'-0" Wide to 5'-0"
- 16'-0" High.
- Custom PLC (programmable
logic control) solutions for
specific customer
requirements.
- Electro-hydraulic,
pneumatic and manual
actuation systems available.
- We can manufacture doors
that withstand up to 800,000
inches per pound torque of
air pressure.
- Working together,
multiple fans and the door
operation itself contribute
to the ventilation control
of the mine.
- American Mine Door's
ventilation doors remain
closed if air currents are
reversed.
- Allows traffic into
neutral airways, where a
permanent stopping is
impossible to construct.
- Ventilation mine doors
can be moved and installed
in new locations, if
necessary, avoiding
expensive overcasts.
- Reduces icing conditions
by installing an American
Mine Door at the portal.
- Used in all types of
underground mines: coal,
uranium, salt, gypsum, clay,
gold, potash, sodium,
titanium, molybdenum.
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Additional Features
Steel Frames and Steel
Panels
Our mine doors come equipped with steel
frames and steel panels, double-acting cushioned air
cylinder, 17 gallon air storage tank, and control
cabinet. Your choice of manual or optional
photo-electric operation. Optional signal lights show
position of door at all times. Air compressor with air
storage tank available for those mines that do not have
ready access to compressed air.
Air Cylinder
Double-acting cushioned cylinder is
equipped with control valves for adjusting the opening
and closing speed of the door wings. Optional rope pull
contactor, slap type contactor or photo-electric
operation located in-by, and out-by each door provide
for a positive opening and positive closing each time.
Eliminates waiting time by mine personnel and maintains
constant speed through haulage ways.
Control
Cabinet
Manual override on valve
allows for operation of door several times
in event of power failure. A shut-off cock,
check valve (to maintain pressure in the air
reservoir receiver should line pressure
fall), filter, lubricator and solenoid valve
are all mounted in a heavy sheet metal
enclosure.
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