Variable Pump Co-Reactant Blending System
- Two electrically-linked precision piston
- Solid state push button pump speed
- Completely self contained
- Easy to install, simple to operate
- Accuracies of +/- 2%
- Consistent cure time
- Reduces waste co-reactant
- Improved accuracy improves process
- Simple and easy to use
- Lower cost than typical blending systems
- Unit ships completely assembled and
ready to install.
- Typical installation time is 2-3 hours.
- Phenolic Urethane Catalysts
- Ester Cured Phenolic Co-Reactants
- Furan Acids
- Digital Output Tachometer - This
output tachometer is mounted on the front of the electrical panel. The
LED display is calibrated to read in ounces per minute, grams per
minute, or any other user programmable measurement.
- Sand Temperature Display - The
LCD thermometer reads out the sand temperature at the inlet to the
Mixer. This allows the operator to adjust for variations in sand
temperature as well as mold or core size. Signal wire and thermocouple
- Temperature Biasing - This option
allows for the automatic metering of co-reactants based on measured sand
temperature. This option is ideal for foundries that experience large
swings in sand temperature but must retain a constant strip time.
- Acid System Upgrade - Includes
dual high tolerance hastalloy pumps.
Flow Measurement and Control
The Palmer Variable Pumping System was
developed to provide liquid catalyst resin system users with a simple,
efficient, yet cost effective way to vary the cure time of cores and molds
(due to mold size variation, sand temperature fluctuation, and other
considerations) without having to switch from one hardener or co-reactant to
Palmer No-Bake Equipment Line
The Palmer VP is a self contained unit housed
in a NEMA 12 enclosure which can be installed on the mixer or remotely. All
electrical and control components are mounted in a secondary NEMA 12
enclosure housed within the primary enclosure.
The standard pumping system consists of two
linear output piston type pumps. The output of each pump is determined by
the angle of the pump in relationship to it's driver. The pumps are
electrically coupled so that when pump "A" is at 0% output, pump "B" is at
100% output. With the simple turn of a knob, a high tolerance variable
frequency drive adjusts the pump RPM of each drive motor to proportion the
liquid components. This allows for an infinite range of calibration ratios
which can be changed in seconds. Tubing from each pump is routed directly to
the mixing chamber so that any adjustments to the ratio is immediate.
The total output of the pumps is determined
by the overall speed selector potentiometer located in the face of the
The Palmer VP System can be operated in
either manual or automatic mode.
The VP System can be manually operated independently of other mixer
components. This mode is used primarily for calibration.
The VP System operates in conjunction with other mixer components
actuating at the same time as the resin pump. This unit comes completely
wired and plumbed, ready for immediate installation.