The Simpson Multi-Cooler® is specifically designed to provide the mixer group with sand that is cooled to temperatures that allow optimal mulling, premixed to eliminate return sand variations and with a moisture content controlled within tight tolerances.
The result is optimal mulling and high-quality, profitable castings.
Contact Us Multi-Cooler Data Sheet
“Within the first month of installing the Multi-Coolers®, scrap dropped from 7% to 5%. The scrap savings paid off the coolers in a year.” – Production Manager, Poland
Continuous sand cooler and pre-conditioning system operating on the principle of evaporative cooling.
Sand systems with return sand temperature above 120°F (49°C) and/or wide variations in return sand properties.
-Discharge moisture of 2.0% +/-0.2%
-Pre-mixing with back-blending and controlled retention
-High-efficiency cooling to below 120°F or 20°F over ambient
The Simpson Multi-Cooler is a continuous, on-demand evaporative cooler that has many innovative design features that improve sand quality and produces higher quality castings.
Key design features include:
The #1 cause of sand related casting scrap as described by the Metalcasting Industry Researchers is hot sand. If you have a hot sand problem and your foundry is experiencing casting defects, the Simpson Multi-Cooler is the solution.
These are the most common hot sand casting defects that the Multi-Cooler can correct:
To release the heat from a sand grain’s surface a certain amount of energy in the form of air and water is required. Thoroughly cooling sand takes time; with the Simpson Multi-Cooler cooled sand can be efficiently achieved.
Continuous back-blending of a large volume of retained sand from multiple molds eliminates any “first-in/first-out” effect and assures complete homogeneity of return sand prior to final mixing.
Integrated Simpson Moisture Control System
Fully integrated into the Simpson Multi-Cooler is the Simpson Moisture Control System (MCS). This advanced moisture control system was designed using the latest technology and utilizes sand temperature and conductivity (moisture) data. The data is collected from sand within the Multi-Cooler to continuously monitor and make real time adjustments to the water addition rate. Any large fluctuations in the incoming sand moisture and temperature are compensated for and the correct water addition is automatically controlled. The MCS is able to maintain tight moisture control of the sand being discharging from the Multi-Cooler.
The MCS monitors the exhaust air temperature which is correlated to the actual sand temperature within the Multi-Cooler body. The MCS also continuously measures the conductivity of the retained sand mass within the Multi-Cooler and calculates the water demand requirements that are automatically sent out to the Simpson supplied water manifold.
The MCS includes multiple color display screens that visualize the process. Information displayed includes:
The system is capable of displaying in multiple languages and both imperial and metric measurement units.
“We will be installing Multi-Coolers® in the new foundry. The Cooler here prepares sand so consistently and well that you can practically mold with it.”—VP of Operations
Simpson Technologies first introduced the concept of sand cooling in the 1960s.
The current Simpson Multi-Coolers are the result of over 50 years of continuous research and practical field experience in sand cooling systems. Commonly copied by various companies, Simpson Technologies invented this technology with the first operational protype in 1963 and the first patent [US Patent 3,406,950] in 1966. Over 200 foundries around the world have relied on Simpson Multi-Cooler for sand cooling and preconditioning.
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