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Foundry Products -->
Sand Mixers --> M-Series
--> M2000XLD Foundry
Products:
Continuous Sand Mixers and Batch Sand Mixers
 M2000XLD High Speed Continuous Mixer
Index:
Standard Features |
- Rugged -
heavy-duty construction designed for years of
use and abuse with minimal maintenance.
- Simple design --
easy to operate/maintain.
- Quick access
mixing chamber dual doors. No tools required
- Tungsten-carbide
tipped mixing blades for increased life. Twice
the thickness of others.
- Precise digital D.C.
driven resin pumps.
- Test run in our
facility prior to shipment to ensure proper
operation before it hits your dock.
- Supplied 100%
complete and fully assembled for easy, quick
installation.
- Many options
available - mixer can be custom fitted to match
the application's exact requirements.
- Replacement parts
available from Palmer or from high quality
industrial supply houses in your area. Standard
off-the-shelf components are used wherever
possible so that parts availability is good and
affordable.
- One year warranty.
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ALL PALMER MIXERS ARE
AVAILABLE FOR OUTRIGHT PURCHASE OR RENTAL
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System Overview
Mixing Chamber - All
Palmer mixing chambers feature ultra-heavy
construction. The regenerative sand lining protects
the primary fabrication while imparting the highest
mixing efficiency possible. Heavy gage steel
chambers with turned, ground, and polished mixer
shafts are standard. Direct drive system - no
gearboxes, belts, or chains.
 Mixing
Blades - All Palmer blades feature tungsten carbide
tipped mixing blades. These blades offer extremely
long life. Our 1/4" thick carbide is twice as
thick as others.
Sand Metering - All
Palmer mixers utilize fixed orifice sand metering
devices for the ultimate in process consistency.
Pumping System - All
Palmer mixers feature as standard low RPM, high
torque digital DC gear head pump motors directly coupled to
large cavity gear pumps. Palmer's resin delivery
system ensures consistent resin flow and greatly
reduced effects of resin viscosity changes as
compared to others. Many pumping system options are
available.
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 Air
Jets
All Palmer mixers feature easily removable resin
delivery jets. Using the slip fit jet, the operator
can easily calibrate at the actual point of resin
entry, not a remote ball valve as others do. A low
flow air assist keeps the resin ports
 open
and aid in the up front blending of resin onto the
sand.
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Control
System
All Palmer mixers are fitted with a high quality
electrical control system featuring standard OEM
components and complete control integration. A
high capability smart relay is used to control all
critical mixer timing functions to ensure good first
and last sand.
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Mixing
Chamber/Motor Head Assembly
The mixing chamber is a
direct drive design that eliminates all maintenance
associated with timing belt and gear drive systems.
The mixing chamber is made from heavy walled tubing
that is externally reinforced for maximum rigidity and
stiffness.
The mixing chamber
doors feature heavy-duty quick release knobs that
allow for simple, easy access to the interior of the
chamber. The doors are hinged at the bottom and swing
down to allow complete access to the mixing blades and
driveshaft. The hinged doors eliminate all ergonomic
problems associated with the removal of fabricated
components from the mixer.
The heavy-duty
driveshaft is made from ground and polished-stress
proofed steel shafting and is direct coupled to the
main drive motor.
The mixing blades are
faced with ¼” thick tungsten carbide and are a fixed
position blade with predetermined angles and head
heights. This greatly simplifies the replacement
process and eliminates the need for constant blade
inspection and adjustment found with other blade
designs.
The mixing blades are
overlapping and sized to allow a build up of resinous
material that creates the lining of the inside of the
mixing chamber. This lining provides an optimum
relationship between the end of the blade and the
interior diameter of the chamber. It is constantly
maintained by each blade wear as it occurs. With this
lining as an intentional part of the mixing chamber,
the daily cleaning consists of only removing the build
up on the mixing blades and driveshaft.
The mixing chamber is
designed to be as rugged yet simple as possible. The
fixed position mixing blades, close tolerance
regenerative lining, and high speed rotation provide
and extremely intense blending action with a minimum
amount of cleaning and maintenance.
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Controls
All main electrical
components are housed in a NEMA 12 dust tight
disconnect enclosure. All components are thoughtfully
arranged for ease of operation and maintenance.
A small enclosure is
located at the operator station and contains the
control switches needed for automatic mixer operation.
The control system has
a master safety relay with mixing door limit switch
and emergency stop pushbuttons on both the machine
cabinet and the operator station.
There are two modes of
mixer operation:
“HAND” – This
is a manual mode of operation which any or all
aspects of the mixer are operated via two position
switches, located on the door the enclosure.
“AUTO” – In
this mode of operation, all aspects of the mixer are
run from a remote panel located at the operator’s
station.
A single three phase
electrical service is required. An internal KVA
transformer housed in the enclosure provides the
120-volt control power.
The pump has a digital
DC speed controller that eliminates speed fluctuations
due to voltage spikes in the supply voltage. Four
speed settings are included. Speed setting is quick
and easy for each level.
All timer functions are
controlled by a Zelio based Smart Relay: pump on / off
delays, slidegate on / off delays, calibration timer,
etc.
- Main enclosure –
Hoffman NEMA 12 Disconnect
- Main control
components – Allen Bradley
- Control transformer
– Acme
- Main voltage
requirements – 15 Amp 240/480 3 Ph 60 Hz
- Control voltage –
120 volt
- Pump drive voltage –
0 – 90 Volt DC
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Pumping System
The pumping system is
housed in a separate NEMA enclosure to protect the
components from the plant environment. The system will
consist of:
- Two cast iron gear
pumps of wetted packing design
- Two ¼ HP DC volt
gear head motors
- Two fast action
stainless steel air actuated ball valves
- One piston type
catalyst metering pump
The digital DC volt
gear head motors provide consistent output RPM across
their full output range.
The pumps are direct
coupled to the drive motors to eliminate the
inaccuracy found in chain, belt, and gear reduction
couplings. The direct in-line coupling also eliminates
all side load on pump bearings and packing extending
the life of the pump.
Fast response air
actuated ball valves provide instant routing of
chemicals to the mixing chamber.
A low pressure air jet
system provides a low CFM air flow to help introduce
the chemicals into the mixing chamber and keep the
mixing chamber resin ports clear. The air jet system
is fully adjustable via flow controls located in the
electrical enclosure.
Standards
Recirculating Pumps
- The resin pumps run
continuously and the three way ball valves divert to
the mixing chamber when called on. This system is
helpful in maintaining resin temperature and when
utilizing flow meters for liquid usage measurement
and control
Calibration Timer
with Remote Start / Stop Buttons
- The calibration
timer is included with the “Zelio” based Smart Relay
System. The Zelio controls the pump on / off delay
timer, slide gate on / off timer, purge timer, etc.
This system has proven itself to be very reliable
and easy to use.
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| Feature |
Standard
Specification |
| Capacity
(Based on Silica Sand) |
1000
- 2200 Pounds per Minute |
| Capacity
(Based on Silica Sand) |
30
- 66 Tons Per Hour |
| Standard
Mounting |
Fixed
Position |
| Standard
Electrical and Pump Enclosure Location |
Back
Plate Mount |
| Mixing
Chamber Door |
Four Bottom Hinged Doors with Quick Access Knobs
- No Tools Required |
| Mixing
Chamber Length |
84" |
| Mixing
Chamber Inside Diameter |
12.50" |
| Mixing
Chamber Wall Thickness |
.75" |
| Sand
Metering Device |
Fixed
Orifice Slidegate |
| Standard
Drive Motor Sizing |
30-50
HP - 870 RPM - Horsepower Determined by Resin
System
|
| Standard
Mixing Blade Style |
Pinned
(threaded available) |
| Driveshaft
Diameter |
5" |
| Standard
Electrical Service Required |
100
Amp 480 Volts -
3 Phase Supply |
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Common
M-Series Options
For
a complete list of options, click here.
Mounting
- Fan
Bearing Swivel
- Extended
Reach Swivel
- Under
Motor Swivel
- Overarm
Swivel
- Full
Articulation
- THE
CUBE
- Mobile
Mixers
- Skid
Mounted
Pumping
System
Other
For
a complete and detailed description of Palmer
mixers, click here.
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