40–250 kg/h Dry-Type Single-Screw Floating Fish Feed Pellet Machine for Fish Farm

1. Working principle of the Dry Type Single-Screw fish food extruder machine:

The raw material is fed into the Dry Type Single-Screw floating fish food extruder machine through the feeding system. Inside the extrusion chamber, the rotating screw generates high pressure and high temperature, cooking the ingredients, gelatinizing the starch, and reducing harmful microorganisms.

The cooked material is then forced through a forming die (mould) to produce uniform floating fish feed pellets. By replacing the die, the machine can manufacture pellets in different diameters to meet the feeding requirements of various fish species.

Finally, an adjustable cutting device trims the extruded pellets to the desired length, producing finished fish feed pellets that are ready for drying, cooling, or packaging.

2. Main technical parameters:

3. Main Components of the Dry Type single screw floating fish feed pellet making machine

1. Precision Feeding System

• Feed Hopper: A large-capacity, gravity-fed stainless steel hopper designed for consistent raw material flow.

• Feed Motor: Equipped with frequency conversion technology, this motor allows for precise control over the feeding speed, preventing material blockage and ensuring a stable extrusion pressure.

2. Extrusion & Thermal Processing Unit

• Insulated Guard (Built-in Expansion Heater): This critical safety feature houses the electric heating rings. The insulation minimizes heat loss, ensuring optimal starch gelatinization temperatures (120°C–150°C) while protecting operators from high-temperature surfaces.

• Control Panel: The centralized "brain" of the machine. It features digital displays for temperature monitoring and independent switches for the feeder, cutter, and main extruder, allowing for real-time adjustments during production.

3. Advanced Cutting & Shaping Mechanism

• Cutting Device: A high-precision assembly that houses the die and blades. It transforms the cooked dough into uniform pellets.

• Cutter Motor: A high-speed, independent motor that controls the rotation frequency of the blades. By adjusting this motor's speed via the control panel, farmers can determine the exact length of the fish feed pellets.

• Adjustment Handwheel: Allows the operator to fine-tune the distance between the blade and the die head without stopping the machine, ensuring a smooth, burr-free pellet surface.

• Cutter Slide: A heavy-duty sliding rail that facilitates easy maintenance and quick die replacement (e.g., switching from 2mm to 4mm dies).

4. Discharge & Collection

• Outlet: An angled discharge chute designed to direct finished pellets into a cooling tray or conveyor, preventing pellet breakage during the exit phase.

4. Application:

Dry Type single screw floating fish food pellet maker machine is applied to produce dry and wet type different shapes fish feed (pet fishes, cultured fishes etc.). The puffing degree can be adjusted to produce floating or sinking feed type. This production line also produce dog, cat, bird feed and so on. Fish feed production line is applied to produce dry and wet type different shapes fish feed (pet fishes, cultured fishes etc.). The puffing degree can be adjusted to produce floating or sinking feed type. This production line also produce dog, cat, bird feed and so on.

5. Advantages:

1. This Dry Type single screw fish feed processing machine is widely used for producing floating feed pellets of all kinds of aquatic animal.
2. Advanced technology and humanized design ensures easy operation and reliable performance.
3. High efficiency, low power consumption
4. Screw sleeve of this Dry Type single screw floating fish feed machine adopts enchase alloy steel strip structure, which guarantees long service life.
5. Different moulds can be chosen to make pellets with different diameters and shapes.
6. Feed pellets die 1-12mm.

6. FAQ

Q1. What moisture content is recommended for a Dry Type single screw floating fish feed pellet extruder machine?

For optimal extrusion performance, the raw material moisture content should generally be 18% to 22%. This range helps achieve proper starch gelatinization, stable extrusion pressure, and good pellet expansion. If the moisture is too low, pellets may crack or expand poorly. If it is too high, the pellets may become soft and have reduced floating performance.

Q2. Can a Dry Type single screw floating fish feed extruder machine produce sinking fish feed?

Yes. By adjusting the feed formulation, moisture level, screw speed, extrusion temperature, and die configuration, a dry type single screw extruder can produce both floating and slow-sinking fish feed. However, if you require highly stable sinking pellets or specialized aquatic feeds, a wet-type extrusion system generally provides greater formulation flexibility.

Q3. How long do the screw and die last in a Dry Type Single-Screw floating fish food pellet making machine?

The service life depends on the raw materials, operating hours, and maintenance practices. Under normal production conditions using properly ground feed ingredients, a high-quality alloy steel screw and die typically last 800 to 1,500 operating hours before replacement. Regular lubrication, proper moisture control, and avoiding metal impurities can significantly extend component life.

Q4. What is the difference between a Dry Type Single-Screw floating fish feed pellet maker machine and a Wet-type single screw fish feed processing machine?

The main difference is the heating method. A Dry Type single screw floating fish food maker machine relies on electric heaters and mechanical friction, so it does not require a steam boiler, resulting in lower investment and easier installation. A Wet-type Single-Screw floating fish food pellet making machine uses external steam conditioning to improve starch gelatinization and pellet quality, making it more suitable for large-scale commercial feed mills with higher production capacities and more complex feed formulations.

Q5. Can this machine process local raw materials commonly available in Indonesia?

Yes. A Dry Type Single-Screw fish feed pellet maker machine is compatible with many ingredients commonly used by Indonesian feed producers, including corn flour, rice bran, soybean meal, cassava flour, fish meal, coconut meal, and palm kernel meal. To achieve good floating performance, the feed formula should contain sufficient starch and maintain the recommended moisture content before extrusion. Proper grinding and ingredient mixing also help ensure consistent pellet quality.

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