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Foundry Products:
M-Series Line Sand Mixers Models
M2000XLD High Speed Continuous Mixer
Index:
Highlights
Foundry 4.0 Control System (whole facility approach) for decision making, process improvement, equipment utilization and real time data collection.
This integrated control system can see everything and collect the data that you want to see, in real time.
- Monitor and control processes remotely
- Data collection and analysis in real time
- Production utilization
- Data for more accurate decision
- Four doors - no tools required.
- High speed.
- Heavy duty - low maintenance.
- Easy operation.
- Tungsten carbide tipped blades.
- Precision chemical pumps.
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.
- Precision chemical pumps.
- Test run in our facility prior to
shipment to ensure proper operation before it hits your dock.
- 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.
- Two year warranty.
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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 magnetically coupled pumps. Palmer's resin delivery
system ensures consistent resin flow and greatly reduced
effects of resin viscosity changes as compared to others. A
PLC is used to control all critical mixer timing functions
to ensure usable first and last sand.
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Resource Center |
Article
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Mixer and Compaction Calibration
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Article
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Understanding Mixer Pumping Systems
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Video |
Palmer M-Series XLD Continuous Sand Mixers. |
Catalog |
Palmer M-Series Continuous Sand Mixers. |




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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 PLC is used to control all critical mixer
timing functions to ensure usable 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 virtual position switches,
located on the HMI in the door of 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.
Four speed settings are included. Speed setting is quick and easy
for each level.
All timer functions are controlled by a PLC: pump on / off delays, slidegate on / off delays,
calibration timer, etc.
- Main enclosure – Hoffman NEMA 12
Disconnect
- Main control components – High Quality
- Control transformer – High Quality
- Main voltage requirements – 60 Amp 240/480 3 Ph 60 Hz
- Control voltage – 120 volt
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Pumping System
The pumping system is housed in a separate
enclosure to protect the components from the plant environment.
The
system will consist of:
- Two magnetically coupled pumps
- Two fast action stainless steel air
actuated 3-way valves
- Optional piston type catalyst metering pump for 3 part PUNB systems
The pump motors provide consistent output RPM across the operating 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 3-way 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.
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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.
Calibration Timer with Remote Start / Stop
Buttons
- The calibration timer is included with
the PLC System. The PLC 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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Mixer Specifications
Feature |
Standard Specification |
Capacity* |
1000 - 3000 Pounds Per
Minute |
Capacity* |
30 - 90 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 |
*Based on new, clean, silica sand with 3 part phenolic
urethane no-bake resin with a max. addition rate of 1.5% based
on sand
weight.
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Common M-Series Options
For a complete
list of options, click here.
Mounting
- 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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