Fish Feed Pellet Cooler Machine

The fish feed pellet cooler machine is a key device in the aquafeed production line, designed to cool down freshly extruded or pelleted fish feed to near-ambient temperature. Since pellets come out of the extruder at high temperatures (70–90°C) and high moisture levels (15–20%), cooling is essential to maintain pellet quality, prevent spoilage, and make storage safer. We offer various models of feed pellet coolers with capacities ranging from 700kg/h to 3,000 kg/h. Widely used in fish feed production lines (floating and sinking pellets).

Our Fish Feed Cooler adopts the counter-current cooling principle. They are also called Counter-flow Type Fish Feed Coolers. Our cooler machines feature a large air inlet, a high air utilization rate, resulting in a cooling effect, and low energy consumption. Suitable for shrimp feed, poultry feed, livestock feed, pet feed, and biomass pellets.

Technical Data of Small-Scale Cooler Machine

The counter-flow type feed pellet cooler machine is mainly made by a rotary closed air feeder, an air outlet, a pyramid powder feeder, a cooling box, an up and down material level device, deceleration brake motor, an eccentric drive slide valve type discharging mechanism, fixed frame adjusting device, aggregate bin, body frame and air suction system. The working process is that the high temperature and humidity granular materials were uniformly spread out in the cooling tank through an air feeder and pyramid powder feeder, cold air gets into the cooler and gets heat exchange between the vertical material layer and the damp heat granule, then sucked out by air suction system, so that the particles can be cooled.

1. Hot and moist fish feed pellets enter the cooler through the inlet.
2. A counterflow cooling system introduces ambient air in the opposite direction of pellet movement, ensuring efficient heat and moisture exchange.
3. The pellets are cooled uniformly, reducing the temperature to only 3–5°C above room temperature and lowering the moisture to around 10–12%.
4. The sliding valve type discharge system releases pellets without causing breakage.

• Counterflow Cooling Technology – Efficiently cools pellets while minimizing cracks and surface stress.
• Gentle Pellet Handling – Protects pellets from breakage or powdering.
• Moisture Reduction – Lowers moisture content for longer storage life.
• Adjustable Cooling Time – Ensures flexibility for different pellet sizes and densities.
• Durable Construction – Made of high-quality carbon steel or stainless steel for long service life.
• Automatic Discharging System – Provides smooth operation with low labor requirements.
• Energy Saving – Uses natural airflow or fans for efficient cooling.

Our Counter-flow Type Fish Feed Cooler Advantages
1. It can effectively prevent air leakage and high-temperature water vapor from entering the cooler machine.
2. The pyramid-shaped powder feeding device can make material particles accumulate to the largest extent in the cooling cylinder, avoiding other vertical coolers’ shortage of single feed, leading to a decrease in the cooling effect.
3. Due to the higher distance between the air inlet and the granular bed, the suction condition can not be generated.
4. Air suction system, the direction of the cooling wind is reasonable, the cooling tube is closed, the cooling tube is closed, the cold wind can only enter from the bottom, vertically through the material layer, so there is no “short circuit” and “channeling wind” phenomenon, fully improve the utilization rate of the cold wind, improve the cooling effect.
5. Due to using the unique and novel counterflow cooling principle, the high-temperature granular materials gradually cool, the material temperature is decreased, the water is fully distributed, and the cooling effect is remarkable, avoiding the “shock cooling” phenomenon.
6. Adopt a unique way to discharge material, relying on the reciprocating motion of the active frame to change the relative position between itself and the fixed frame, thereby forming the bottom of the whole cooler as a line gap to discharge material uniformly.