Fish Feed Extruder Machine
Brief of Fish Feed Extruder Machine
Fish feed extruder machine is a core equipment for producing puffed pellet feed. Using extrusion puffing technology, it processes various types of raw materials into pellet feed with specific shapes, densities, and nutritional properties. It can meet the feed production needs of nearly all freshwater and marine farmed fish species.
What is the Fish Feed Extruder Machine?
Fish feed extruder machine manufactured by RICHI Machinery can produce high-quality puffed feed for different fish species, featuring high output, low energy consumption, and excellent pellet forming performance. To date, they have been exported to 140+ countries and regions, and well-received by customers at home and abroad.
- Capacity: 0.1-12T/H
- Applicable Raw Materials: Corn flour, wheat flour, wheat bran, fish meal, shrimp meal, meat and bone meal, soybean meal, cottonseed meal, oil, minerals, vitamins, etc.
- Pellet Size: 0.5-15 mm (varies according to fish species and growth stages)
- Types: Twin-screw fish feed extruder; Single-screw fish feed extruder
- Customization Available: Yes
- Number of Conditioner Layers: 2-3 layers (2-layer conditioners are generally used for sinking fish feed; 3-layer conditioners are generally used for shrimp feed)
If you are looking for professional fish feed production equipment, please feel free to contact us, and we will provide you with the highest quality service!
Core Technical features of RICHI fish feed extruder machine
RICHI fish feed extruder not only stands out as the industry’s preferred choice due to their exceptional cost-effectiveness, but also achieves a dual breakthrough in equipment performance and finished product quality by virtue of industry-leading core technologies and carefully selected components, providing an efficient and reliable solution for aquatic feed production.
The core components of the RICHI fish feed extruder machine include: wear-resistant alloy material, dual-shaft differential conditioner, Siemens high-efficiency motor, high-precision cutting system, adjustable aperture die-systerm, and PLC intelligent touch control system. These components work synergistically to ensure exceptional performance in production capacity, energy consumption control, and finished product quality.
01
Wear-Resistant Alloy Material
The screw sleeve and screw are made of 38CrMoAl alloy material, precision-formed through the dual heat treatment process of quenching + tempering. Their wear resistance is 50% higher than that of ordinary carbon steel, ensuring longer component service life and effectively reducing the number of shutdowns for replacement.
02
Dual-Shaft Differential Conditioner
Our machine is equipped with an industry-leading dual-shaft differential conditioning system, Two stirring paddles with different rotation speeds rotate in opposite directions, creating a powerful mixing effect in the stirring chamber. This greatly increases the contact area between feed raw materials and steam, resulting in a high starch gelatinization rate.
03
Adjustable Aperture Die System
We offers a full range of die components with apertures from 0.6mm to 2mm, which can meet the feed needs of different fish species throughout their entire growth cycle, from fry to adult fish, thus saving equipment investment costs. Adopting a modular quick-release design, the replacement time can be controlled within 15 minutes.
04
High-Precision Cutter System
The cutter is forged from high-quality alloy steel, featuring an extremely smooth blade edge. By adjusting the distance between the cutter and the die, the length of the finished pellets can be precisely controlled. Moreover, the cut pellets have a sleek surface with no burrs or debris.
05
PLC Touch Control System
Operators can adjust key parameters like temperature, moisture, and screw speed in real time via the intuitive touch interface. This allows flexible adaptation to the specific feed pellet requirements of different aquatic species , achieving precise control over the entire production process.
06
High-Efficiency Siemens Motor
Powered by a premium Siemens motor with a speed of up to 1,200 rpm, it ensures robust high-output performance and stable operation. Its energy-efficient design significantly reduces power consumption, effectively saving electricity while maintaining consistent performance.
How the Fish Feed Extruder Machine Works
The core working principle of a fish feed extruder machine lies in converting powdery raw materials (fish meal, meat and bone meal, corn flour, soybean meal, etc.) into pellets through “high temperature, high pressure, extrusion, and high shear force”, making the feed more suitable for fish consumption and more resistant to soaking.
Here’s how the fish feed extruder works.
First , the crushed and mixed raw materials are fed into the inlet and evenly conveyed to the conditioner by a screw conveyor for pretreatment.
Next, the materials are thoroughly blended with steam and water in the conditioner. Under high temperature and humidity, sterilization, cooking, and gelatinization are achieved, enhancing the digestibility, absorption rate, and safety of the feed, making it more suitable for fish consumption.
Then, the conditioned materials enter the extrusion barrel, undergoing a crucial structural modification process. Driven mechanically by the screw, the materials experience intense extrusion, shearing, and friction, leading to a rapid rise in temperature and a sharp increase in pressure. Under these conditions, the materials are further cooked and completely transformed into a paste.
Finally, the high-temperature, high-pressure paste is forced through the die holes. At the moment of extrusion, the external pressure drops abruptly to ambient levels, causing the moisture inside the material to instantly vaporize and evaporate.
This results in a porous, loose structure, significant volume expansion, and reduced density, forming floating, slow-sinking, or sinking pellets.
The fish feed pellets are then cooled to remove excess moisture, stabilize their structure, and facilitate storage and feeding.
RICHI Fish Feed Extruder Machine Models
Based on screw structure and conditioning methods, fish feed extruder machine can be classified into single-screw extruders, twin-screw extruders, dry screw extruder, and wet screw extruder. RICHI offers a range of fish feed extruder models to meet customers’ diversified needs.
Single-Screw fish feed Extruder machine
Single-screw extruder machine is generally used for small-scale production of feed for fish, shrimp, pets, etc. It has higher requirements for raw materials and are suitable for processing low-moisture, low-fiber, and easy-to-form raw materials (e.g., formulas mainly composed of corn and soybean meal). Equipped with only one screw with spiral grooves, it can push raw materials forward by the “thrust” of the screw, while generating heat through barrel heating and screw friction.
| Wet Single-Screw Extruder | ||
| Model | DSP-90B | DSP-135B |
| Main Power (kW) | 37 | 75 |
| Feeding Power (kW) | 7.5 | 7.5 |
| Conditioning Power (kW) | 1.1 | 2.2 |
| Cutting Power （kW） | 1.1 | 1.5 |
| Screw Diameter (mm） | 90 | 135 |
| Capacity (T/H) | 0.5-0.6 | 0.8-1.0 |
| Overall Dimension (mm) | 2600*1600*1900 | 3750*1980*1950 |
| Dry Single-Screw Extruder | |||
| Model | DGP-90B | DGP-120B | DGP-160B |
| Capacity(T/H) | 0.2-0.4 | 0.5-0.6 | 0.8-1.0 |
| Main Motor Power(kW) | 37 | 55 | 90 |
| Feeder Power(kw) | 0.75 | 2.2 | 3 |
| Cutting Power(kW) | 0.55 | 1.1 | 1.5 |
| Screw Diameter (mm） | 90 | 120 | 160 |
| Overall Dimension (mm) | 2100*1450*1350 | 2400*1950*1600 | 3100*2650*1800 |
Twin-Screw fish feed Extruder machine
The twin-screw extruder has strong adaptability to raw materials. It can process high-fiber, high-moisture. It is used in the industrial production of aquatic feed and pet feed for cats, dogs, etc. Equipped with two intermeshing screws that rotate synchronously, the extruder stably pushes raw materials forward through the “pinching force” of the screws. When the two screws intermesh, they can “chop and knead” fibers and coarse particles into a uniform state.
| Model | SPHS75*2 | SPHS120*2 | SPHS150*2 | SPHS185*2 | |
| Capacity (T/H) | 0.5-1.0 | 1.5-2.0 | 3.0-4.0 | 5.0-6.0 | 10-12 |
| Main Power (kW) | 55 | 90 | 110 | 200 | 355 |
| Feeder Power (kW) | 1.5 | 1.5 | 1.5 | 1.5 | 2.2 |
| Conditioner Model | DC400-244 | DC500-244 | DC500-244 | DC600-300 | DC600-300 |
| Conditioner Power (kW) | 7.5 | 11 | 11 | 11 | 11 |
| Dual-Shaft Differential Conditioner Model | DC400*300-244 | DC500*400-300 | DC500*400-300 | DC600*500-300 | DC600*500-300 |
| Dual-Shaft Differential Conditioner Power (kW) | 11 | 11 | 11 | 15 | 15 |
| Screw Diameter (mm） | 75 | 120 | 120 | 150 | 185 |
Benefits of Using A Fish Feed Extruder Machine To Produce Pelleted Feed
Fish feed extruder machine adopts an extrusion process, processing raw materials into loose and porous expanded feed through the action of high temperature, high pressure, and high shear force. The feed features better quality, strong water stability, and high safety, thus having more advantages compared with fish feed produced by pellet mills.
All-Round Fish Feed Extruder: For Every Type of aquatic Feed
RICHI fish feed extruder machine offers significant and extensive advantages in terms of raw material adaptability. The fish feed extruders not only fully gelatinize high-starch raw materials but also exhibit exceptional tolerance for high-fat/oil formulations. Furthermore, the extrusion process effectively destroys and deactivates anti-nutritional factors in various plant protein materials (such as soybean meal and rapeseed meal), thereby enhancing feed safety and enabling broader utilization of plant protein sources.
Various Raw Materials
RICHI fish feed extruder machines can process various types of feed raw materials into fish feed. Whether it is dry feed or wet feed, plant-based raw materials or animal protein, minerals or oils and fats, RICHI fish food extruders can efficiently convert them into loose and porous extruded feed, meeting the feeding needs of different fish species.
Corn
Fish Meal
Fish Oil
Soybean Meal
Premixer
Wheat
Powder
Meat Bone Meal
Applications of Fish Feed Extruder Machine
Our fish feed extruder machine can produce fish feeds with different specifications, nutritional components, and floating/sinking properties by adjusting formulas and processes, according to different fish species, growth stages, and breeding modes.
Tilapia
Rainbow Trout
Catfish
Salmon
Sardine
Crap
Fish Fry
Grass Crap
Grouper
Yellow Croaker
Sea Eel
Snakehead
Global Customer Cases
As RICHI Machinery’s flagship product, our fish feed extruder machine has earned global recognition for its superior quality and consistently high pellet yield. Precision-engineered and durable, the equipment is designed to meet the stringent requirements of industrial production, producing uniform, highly nutritious fish feed pellets that meet the most stringent standards of the global aquaculture industry. Here are some success cases for your reference.
5-6 t/h Specialized Fish Feed Extruder machine export to Russia
The client is a leading Russian producer of specialized fish feed, whose core strategy focuses on serving the aquaculture industry for high-value species such as salmon and trout. These fish species are highly sensitive to the nutritional composition and quality of feed.
This necessitates that the extruder must be capable of efficiently processing high-fat formulations while also possessing the ability to produce a full range of pellet specifications to meet the complete lifecycle nutritional requirements of the target fish species.
1-2 t/h High-Quality Extruded Feed Extruder machine export to Iran
The Iranian client is dedicated to producing high-quality extruded feed suitable for total water column aquaculture, aiming to meet the feeding habits of fish species across different water layers.
Its formulation system utilizes corn, barley, corn gluten meal, soybean meal, and fish meal as the base, supplemented with fish oil and phospholipid oil to achieve precise nutritional enhancement.Ultimately, the client introduced the SPHS75×2 twin-screw fish feed extruder, achieving efficient and rapid switching between floating and sinking feed production.
1-1.5 t/h Aquatic Feed Extruder machine export to Uzbekistan
The client from Uzbekistan primarily focuses on high-value aquaculture species during the fry and juvenile stages, requiring the production of extruded feed pellets with diameters of 1mm and 2mm.
The feed must maintain adequate water stability and controlled leaching rate. The production raw materials mainly include corn, wheat, soybean meal, fish meal, and other grains.
Frequently Asked Questions
Below are some questions you may have. If you have any inquiries, please feel free to contact us.
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Why use a fish feed extruder machine to make feed?
Compared with traditional pellet mill, our fish feed extruder has the following advantages:
- Feeds produced by fish feed extruders can have adjustable density, allowing the feed to float on the water surface for a long time. This makes it easy to observe the fish’s feeding situation and reduces water pollution caused by residual feed.
- Through high temperature, high pressure, and high shear force, fish feed extruders can fully cure the nutrients in feed raw materials (such as starch and protein in corn and soybean meal). This makes the feed more conducive to fish digestion and absorption, promoting faster fish growth.
- Through high temperature, high pressure, and high shear force, fish feed extruders can fully cure the nutrients in feed raw materials (such as starch and protein in corn and soybean meal). This makes the feed more conducive to fish digestion and absorption, promoting faster fish growth.
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How to select a suitable fish feed extruder machine?
The selection of a fish feed extruder model depends on factors such as the type of fish, production volume requirements, and pellet type.
- Consider Production Volume
- Individual Fish Farmers: Typically require a production volume of around 0.2 T/H. The extruder only needs to run once to produce enough feed for several days, and it has a small footprint.
- Small-to-Medium-Sized Fish Farms: Generally need a production volume of 0.5–2 T/H, which meets the demand for daily batch production without frequent machine startups.
- Large-Sized Fish Farms: May require a production volume of over 10 T/H. Such setups need a fixed site and supporting equipment (e.g., storage silos, crushers, cooling equipment, conveying equipment).
- Consider Pellet Specifications
- Choose the corresponding die based on the pellet size and shape suitable for different fish species. For example: 2mm round pellets are used for crucian carp; 4mm long pellets are used for grass carp.
- Consider Raw Material Adaptability
- Evaluate based on the characteristics of raw materials, such as dryness/wetness, whether oil is added, and whether they are high-fiber or high-protein. A high-quality fish food extruder should be compatible with a variety of raw materials.
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What raw materials can your machine process?
RICHI fish feed extruder can process a wide range of raw materials into puffed feed, covering multiple categories as follows:
- Protein-based materials: Fish meal, shrimp meal, meat and bone meal, soybean meal, cottonseed meal, corn gluten meal
- Energy-based materials: Corn flour, wheat flour, rice bran, wheat bran
- Minerals: Bentonite, beer lees, seaweed powder, calcium dihydrogen phosphate
- Vitamins: Vitamin A, Vitamin D, Vitamin E, B-group vitamins
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Do you provide fish feed formulas?
Yes. We can provide scientific feed formula recommendations based on factors such as your fish species and growth stages. We also optimize formulas by integrating the characteristics of local raw materials to help reduce costs.
Meanwhile, we offer synchronized equipment parameter debugging (including precise selection of die aperture, screw rotation speed control, etc.) to ensure that quality indicators such as pellet hardness and water resistance meet standards, thus guaranteeing feed quality. Our technical team can customize detailed solutions for you.
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What is your warranty service, and how to replace parts?
We provide an extended 12-month warranty for core components of the fish feed extruder machine. We also supply original factory parts separately (such as dies, cutters, and heating tubes), with prices 15%-20% lower than similar products on the market. This allows customers to replace parts independently, reducing maintenance costs.
Additionally, RICHI offers lifetime free technical guidance support to all customers. Whenever you have needs or questions, you can consult us at any time — we have customer service staff available online 24/7, who will provide timely services and answer your inquiries.
