Floating Fish Feed Extruder Machine
The structure composition of Floating fish Feed Extruder
The floating fish feed extruder molding machine consists of the following components from top to bottom: variable frequency arch-breaking feeding system, dual-shaft differential modulator, extrusion puffing machine, constant-gap soft-blade cutting device, and Siemens main electrical system.
Below are detailed images of the floating fish feed extruder machine：
Dual-Shaft Differential Modulator
Extrusion Expander-Orifice
Constant Gap Soft Blade Cutting Device
Siemens main motor
RICHI floating fish feed extruder machine offers superior corrosion resistance, mid-range pricing, and fast return on investment.
Floating Fish Feed Extruder Model Specifications
RICHI fish feed extruder machines offer multiple pelletizer types tailored to diverse customer requirements. Please refer to the table below to select the appropriate model:
| Twin-Screw Extruder | |||||
| Model | SPHS75x2 | SPHS120*2 | SPHS150*2 | SPHS185*2 | |
| Main Motor Power (kW) | 55 | 90 | 110 | 200 | 355 |
| Screw Diameter (mm) | 75 | 120 | 120 | 150 | 185 |
| Feeder Power (kW) | 1.5 | 1.5 | 1.5 | 1.5 | 2.2 |
| Conditioner Power (kW) | 7.5 | 11 | 11 | 11 | 11 |
| Conditioner Specifications | DC400-244 | DC500-244 | DC500-244 | DC600-300 | DC600-300 |
| Differential Conditioner Power (kW) | 11 | 11 | 11 | 15 | 15 |
| Differential Conditioner Specifications | DC400*300-244 | DC500*400-300 | DC500*400-300 | DC600*500-300 | DC600*500-300 |
| Output (T/H) | 0.5-1.0 | 1.5-2.0 | 3.0-4.0 | 5.0-6.0 | 10-12 |
| Dry Process Single-Screw Extruder | Wet Process Single-Screw Extruder | ||||
| Model | DGP-90B | DGP-120B | DGP-160B | DSP-90B | DSP-135B |
| Main Motor Power(kw) | 37 | 55 | 90 | 37 | 75 |
| Feeder Power(kw) | 0.75 | 202 | 3 | 7.5 | 7.5 |
| Cutting Power (kW) | 0.55 | 1.1 | 1.5 | 1.1 | 1.5 |
| Screw Diameter (mm) | 90 | 120 | 160 | 90 | 135 |
| Overall Dimensions (mm) | 2100*1450*1350 | 2400*1950*1600 | 3100*2650*1800 | 2600*1600*1900 | 3750*1980*1950 |
| Output (T/H) | 0.2-0.4 | 0.5-0.6 | 0.8-1.0 | 0.5-0.6 | 0.8-1.0 |
Details of Twin-Screw Floating Fish Feed Extruder Machine
Working Principle
Processed powdered materials enter the vertical silo. A variable-frequency arch-breaking feeder at the bottom conveys powdered materials with oil content below 7% into the conditioner. The dual-shaft differential conditioner employs two paddle shafts—one fast, one slow—to knead, sterilize, and high-temperature gelatinize the materials under saturated steam. The gelatinized paste-like material enters the extruder.
The extrusion screw in the chamber propels the material forward. Due to the screw’s wide pitch at the rear and narrow pitch at the front, the material undergoes compression under high temperature and pressure as it advances. The twin screws also apply friction and shear force, enhancing the material’s cooking degree. After extrusion, the finished pellets are rapidly forced through the front die holes. They expand instantly upon release, are then cut by the blade, and fall as finished products.
Key Technology of Floating Fish Feed Extruder Machine
Arch-Breaking Feed Hopper—Producing Feed with Higher Fineness
Fish feed ingredients feature fine particle size, low bulk density, and high fat content, making them highly prone to arching within hoppers. This causes difficult discharge from the hopper. The floating fish feed extruder machine integrates a variable-frequency arch-breaking feeder. While material resides in the hopper, dual-diameter rollers rotate in opposite directions to effortlessly break up clumps and arches. This ensures material enters the conditioner more uniformly, controllably, and continuously, resulting in feed with enhanced fineness.
Dual-Shaft Differential Conditioner — Achieving Higher Gelatinization and Cooking Levels
Two paddle shafts rotating at different speeds are installed within the conditioner, creating alternating shear forces. This extends the material residence time from 15-20 seconds in a single-shaft system to 120-180 seconds. This process eliminates harmful bacteria in the material, enhances conditioning and gelatinization, and provides a uniform paste-like material for subsequent extrusion. The result is high-quality feed with superior conditioning and gelatinization levels.
Twin-Screw Extruder — Crafting Feed Better Suited for Fish
Fish feed formulations feature high fat, moisture, starch, and protein content. Yet the feed itself must meet stringent requirements: ≥24 hours of buoyancy, 0.6 mm pellet size, low powdering, and minimal gelatinization residue. In the floating fish feed extruder machine, the twin-screw’s high-shear zone achieves linear speeds up to 1.5 m s⁻¹, enabling oils to uniformly coat starch in 1–2 μm particles without impeding expansion. This results in smooth pellet surfaces with powder content <1%. Barrel temperatures reach up to 180°C, ensuring high sterilization rates, low protein denaturation, and enhanced fish digestibility.
High-Temperature Chamber – Producing Feed with Superior Water Stability
The extruder is pivotal in fish feed pelletization, with its operation directly impacting feed quality. RICHI’s floating fish feed extruder employs an upgraded control system and chamber structure, enabling higher pressure within the chamber at elevated temperatures. This enhances material compression, achieves finer oil encapsulation, and improves pellet buoyancy. The resulting feed exhibits extended water stability, remaining afloat for up to 8 hours.
Features and Advantages of Floating Feed Extruder Machines
High Production Capacity
The twin-screw extruder achieves a sterilization rate ≥99.999%, with protein denaturation controlled at 70%-80%. Fish exhibit a 3%-5% higher feed digestibility rate for feed produced by twin-screw extruders compared to single-screw extruders.
This results in superior feed palatability, accelerated growth, enhanced reproduction, and increased overall fish yield.
Superior Materials
The main base and gearbox of the floating fish feed extruder are integrally cast. The meshing twin screws are made of 38CrMoAl nitrided steel, undergoing full quenching to achieve a hardness of 58HRC–62HRC. This extends service life by 2–3 times compared to conventional 45 steel.
During co-rotation, the screws form a closed C-shaped chamber that forcibly extrudes materials forward.
Precision Output
The floating fish feed extruder integrates high-temperature steam conditioning and an expanded chamber, achieving superior material gelatinization and sterilization rates.
Co-rotating twin screws with 0.6mm die holes produce feed pellets that maintain structural integrity at small diameters, featuring uniform coloration and a smooth surface finish.
Applications of Floating Fish Feed Extruder machine
Our floating fish feed extruder machines are sold worldwide. Next are examples of pelletizers sold to Botswana, Uzbekistan, South Africa, Thailand, Ukraine, and Ecuador.
Floating Fish Feed Extruder machine in Botswana
- Output: 100kg/h-150kg/h
- Main Unit Model & Power: DGP50-B, 22 kW
- Pellet Specifications: 2-8 mm
Floating Fish Feed Extruder machine in Uzbekistan
- Output: 1t/h
- Main Unit Model & Power: DGP90-B, 37 kW
- Pellet Specifications: 1.2-10 mm
Floating Fish Feed Extruder machine in South American
- Output: 300kg/h
- Main Unit Model & Power: DGP50–B, 11 kW
- Pellet Specifications: 2-10 mm
Floating Fish Feed Extruder machine in Thailand
- Output: 2t/h
- Main Unit Model & Power: DGP160-B, 90 kW
- Pellet Specifications: 2-12 mm
Floating Fish Feed Extruder machine in Ukraine
- Output: 100kg/h-150kg/h
- Main Unit Model & Power: DGP50-B, 22 kW
- Pellet Specifications: 3-6 mm
Floating Fish Feed Extruder machine in Ecuador
- Output: 3 t/h
- Main Unit Model & Power: SPHS120*2, 110 kW
- Pellet Specifications: 2-12 mm
Related Videos
The following two videos will demonstrate the pellets produced by RICHI fish extruders and showcase the actual application of the floating feed extruder.
RICHI Floating Fish Feed Extruder machine Produces Premium Pellets
RICHI Floating Fish Feed Extruder machine in Russia
The Entire Process of Extruding Floating Fish Feed Pellets
The floating fish feed extruder is merely one component in the overall production process. The entire production workflow is sequential and can be divided into the following seven stages. Taking a 1.8t/h-2t/h floating fish feed pellet production line as an example, the stages are analyzed as follows:
Grinding Section
01
Corn flour, soybean meal, and other raw materials are placed into the grinding hopper and processed by the grinder. For fish feed pellets requiring finer particle sizes, an ultra-fine grinder is utilized.
Mixing Section
02
The mixer features a separate feed inlet at the top, allowing materials in the mixing chamber to be uniformly blended with newly added materials as they enter the mixer together.
Pelletizing Section
03
The pre-processed material enters the floating fish feed extruder machine for high-temperature compression, forming pellets with uniform color, smooth surface, and consistent specifications.
Drying Section
04
Dry the pellets from the floating fish feed extruder to achieve the moisture content required for the finished pellets.
Coating Section
05
Spray oil onto the moist granules while they are still hot to ensure even absorption, achieving uniform nutritional distribution.
Screening and Cooling Section
06
The sprayed particles enter the cooler to reduce their temperature to room temperature, facilitating subsequent screening and packaging.
Packaging Section
07
The high-quality finished granules are screened and then transferred to the finished product silo. They are subsequently packaged using a dedicated bagging scale or a fully automated bagging system for convenient storage and transportation.
Why Choose RICHI?
RICHI floating fish feed extruder machine delivers premium equipment crafted with precision engineering, offering cost savings, labor efficiency, peace of mind, space optimization, and rapid return on investment!
Multi-Functional Design
RICHI Machinery employs variable-frequency feeders to prevent clogging during feeding. The thick-chamber pre-conditioning process enhances feed gelatinization and cooking efficiency.
Its interchangeable die structure allows production of floating, sinking, and slow-sinking feeds on the same line by simply adjusting screw combinations and cutter speeds. This reduces machine changeover frequency while adapting to diverse fish species and farming models.
Triple Efficiency
RICHI Machinery utilizes Siemens motors, enabling its floating fish feed extrusion machines to achieve full production capacity coverage from 0.5T/H to 10T/H.
Compared to models of equivalent power, these machines deliver 8%-12% energy savings. Paired with ABB and Schneider electrical controls, they feature one-button start-up, reducing reliance on manual labor. This design seamlessly integrates high productivity, low energy consumption, and ease of operation into a single solution.
Proven Expertise
RICHI has accumulated over 1,000 aquatic feed production line projects, with its floating fish feed extrusion machines exported to more than 90 countries. Repeat purchase rates exceed 60% among clients in Peru, Malaysia, Saudi Arabia, and other nations.
Featuring touchscreen recipe management, uniform pellet formation, and stable buoyancy, our equipment helps farms reduce feed conversion ratios by 0.15–0.2. This enables fish to consume less feed, resulting in lower aquaculture costs.
Frequently Asked Questions
When purchasing a floating fish feed extruder machine, you may have many questions. You can refer to the following questions to find answers:
What raw materials can be processed using floating fish feed extruder machines?
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Common raw materials for floating fish feed include corn flour, corn gluten meal, wheat flour, wheat gluten, cassava flour, sorghum flour, fish meal, soybean meal, soybean cake, peanut meal, cottonseed meal, rapeseed meal, squid meal, krill meal, blood meal, fish oil, soybean oil, rapeseed oil, and phospholipids. All these materials can be processed into finished pellets using RICHI’s floating fish Feed Extruder molding machine.
How to choose between single-screw and twin-screw extruders?
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For output ranges of 0.3T/H to 1.2T/H, a single-screw extruder is suitable if budget is tight. However, a twin-screw extruder is required if production capacity exceeds 1T/H, when processing high-oil or high-salt raw materials, or when manufacturing 0.6mm micro-pellets.
Can fish feed with 12% oil content still float?
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Yes, but it requires dual-shaft differential modulation and high pressure exceeding 60 bar to emulsify oil into 1-2 μm particles, ensuring they do not obstruct bubble wall formation.
What is the actual power consumption of a 1 T/H floating fish feed extruder machine?
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Using a 75 kW motor as an example, power consumption per ton of material reaches 55-60 kW/H at 85% load.
What is the service life of extruder die holes for floating fish feed?
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38CrMoAl vacuum-hardened die holes last 3000 hours on standard floating feed lines, while imported Cr12MoV die holes last 5000 hours.
Can the floating fish feed extruder machine switch between producing sinking and floating feeds?
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Yes. By replacing the die head, adjusting the extrusion environment, modifying steam volume, and regulating drying temperature, production can be switched within 30 minutes.
