Single Screw Extruder Machine
What is a Single Screw Extruder Machine
If you work in pet food production, aquatic animal feed production, or similar industries, you will find single screw extruder machines very common. A single screw extrusion machine is a widely used extrusion machine. It can produce expanded pellet feed or some processed grain products. Its main part is one rotating screw. RICHI single screw extruders support both wet and dry processing. Their specific differences will be mentioned later.
0.2-1 T/H
Customizable Production Capacity
Single Screw Extruder Machine Applications
Single screw extruders have a very wide range of applications. No matter which of the following fields you want to use them in, RICHI can customize parameters for producing various pellets. We do this according to your needs, raw materials, plant conditions, and other factors.
Fish Feed Production
Whole Grain Processing
Poultry and Livestock Feed Production
Pet Food Production
Single Screw Extruder Parameters
As mentioned earlier, RICHI single screw extruder machines are divided into dry and wet types. To meet different customer needs, RICHI has carefully researched and designed them into different models. Welcome to contact us and tell us your needs. We will recommend the most suitable model for you.
All output data marked on this page are rated output values when matched with a complete feed production line. In actual production, output will be affected by different factors. The specific output must be based on actual on-site working conditions.
Single Screw Extruder Machine Global Cases
RICHI single screw extruder machines have been exported to more than 140 countries and regions. They are widely used in pet food production, aquatic animal feed production, and some poultry and livestock feed production. Below are some completed cases. Their specific production capacities are customized according to customer needs. If you have similar needs, please contact us to get the latest single screw extruder price.
1 T/H Single Screw Extruder for Sale in Qatar
Process: dry process
Raw Materials: fish meal, soybean meal, wheat flour, corn flour
The customer’s area has inconvenient steam supply. The weather is hot and dry all year round. So the customer bought a dry single screw extrusion machine. It is used to produce sinking feed pellets for tilapia and other fish. This machine is easy to maintain.
3-4 T/H Single Screw Extruder for Sale in Bolivia
Process: dry process
Raw Materials: corn, soybeans, sorghum, and other raw grains
The customer mainly puffs raw grains. The puffed raw materials are used as feed ingredients. The customer’s existing production line has large capacity. It requires the machines to run continuously and stably. So we designed four single screw extruders to run at the same time.
0.5-0.6 T/H Extruder Single Screw in Bangladesh
Process: wet process
Raw Materials: fish meal, soybean meal, rice bran, wheat flour, corn flour
This is a small aquatic feed factory. It uses local fish meal and rice bran to make floating fish feed. We recommended a wet-process single screw extrusion machine. It matches the customer’s site area and finished product needs.
1 T/H Single Screw Extruder for Sale in Indonesia
Process: wet process
Raw Materials: chicken meal, fish meal, corn, rice, wheat, soybean meal, etc.
The customer mainly produces cat and dog food. This wet-process single screw extruder machine helps material cooking and food shaping. The customer also equipped a vacuum spraying machine and other equipment. These improve the palatability of the finished product.
Extruder Single Screw Design Highlights
RICHI single screw extruder machines bring customers broad profit growth space. They are widely praised by customers. This comes from RICHI’s ingenious design of single screw extruders. We refine every small part. In the end, the machine has many outstanding highlights.
Feeding Port
Equipped with a frequency converter. The feed amount and speed are freely controllable. It makes the screw feed evenly. It prevents machine stalling.
Conditioner
The default configuration of a wet single screw extruder machine. It uses steam and water to cook and gelatinize materials.
Screw
The core extrusion part of a extruder single screw. Its job is to convey materials. It completes shearing, melting, cooking, and pressurizing.
Motor
It provides stable power for the whole machine. It ensures enough torque during extrusion. It lets the screw run smoothly and steadily.
Cutter
It rotates at high speed with the main shaft. It cuts the extruded material evenly. It supports adjustment of pellet length.
Head Flange
It locks and fixes the forming die. It seals the cavity. It prevents high-pressure materials from overflowing and leaking.
Single Screw Extruder Advantages
Besides the key parts above, RICHI single screw extruder machines have many hidden details. Together they create the machine’s advantages.
RICHI single screw extruder machines use a soft-blade close-fitting pelletizing structure. They support stepless speed change. During discharge, the finished product can be cut to any length. It will not produce burrs. Under the action of pressure boosting die and electric heating device, the expansion rate is increased. The output and quality of finished products are guaranteed.
Good Finished Product Quality
Our screws and screw sleeves use special wear-resistant and high-temperature alloy steel. They also receive extra heat treatment. This creates wear resistance and high-temperature resistance. It can effectively extend the service life of the single screw extrusion machine.
Strong Durability
RICHI single screw extruders can produce floating and sinking aquatic feed, pet food, and livestock and poultry pellets. By changing the discharge die, they can produce pellets with different pore sizes. They can be used in different processing scenarios.
Wide Application Range
Single Screw Extruder Machine Production Line Process
Our single screw extruders can match production capacities of 0.2-1 ton/hour. They are widely used in aquatic feed processing plants, pet food processing plants, and other places. In these production scenarios, there is a complete production process, including the extrusion step. If you have needs, we can also help you build a complete pellet plant project.
01.
Cleaning
RICHI Machinery’s various cleaning equipment can be used to clean the raw materials, removing impurities such as hemp rope, stones, and iron filings. The main purpose is to protect other equipment used in the process and to ensure the purity of the finished pellets.
02.
Crushing
Raw materials that are too large cannot directly enter the extruder. This is especially true for aquatic animal feed. It must be finely crushed with an ultrafine pulverizer. After the raw materials are crushed to standard fineness, the quality of finished pellets can be guaranteed.
03.
Mixing
When making aquatic animal feed or pet food, most customers choose multiple raw materials in proportion. Their mixing uniformity directly affects how well animals absorb nutrients. A mixing machine can fully and evenly mix raw materials.
04.
Extruding
Whether wet or dry processing, this step is key in a single screw extruder machine production line. Materials melt under high temperature, high pressure, and shear force. Then they are extruded and puffed into pellets with various properties.
05.
Drying
You can use a drying machine to reduce pellet moisture to a qualified range. The purpose is to prevent pellets from mold. It improves pellet storage stability. Usually, the moisture of aquatic feed and pet food needs to be reduced to about 10%-12% or lower.
06.
Cooling
Pellets after extrusion and drying have some temperature. They are also soft. To avoid affecting storage life or causing broken pellets, cooling is necessary. This step needs to cool pellets to near room temperature.
07.
Spraying
Whether aquatic animal feed or pet food, spraying can supplement nutrition and enhance palatability. This step can use spraying equipment to add oil, vitamins, probiotics, flavorings, etc. to pellets.
08.
Screening
This step improves pellet appearance. It also lets animals eat pellets of uniform size. Screening equipment can remove oversized or undersized pellets. It filters out fines. It lets qualified finished products smoothly enter the next process.
09.
Packing
This is the last step in the production line. To improve the efficiency of the whole production process, a good packing machine plays a big role. It reduces labor costs. It also ensures the accuracy and qualification of weighing and packaging.
Single Screw Extruder Machine Auxiliary Equipment
As mentioned earlier, RICHI single screw extrusion machines are often used in the production of aquatic animal feed and pet food pellets. Besides the single screw extruder machine, what other auxiliary equipment is used? Below are some common machines. RICHI can provide them if you need.
Raw Material Cleaning Machine
Raw Material Crusher
Ultrafine Pulverizer
Raw Material Distributor
Raw Material Mixer Machine
Pellet Drying Machine
Pellet Cooler Machine
Vacuum Spraying Machine
Pellet Screening Machine
Weighing Packer Machine
FAQ
Below are some common questions about extruder single screws. If this is your first time learning about them, or if you have other questions about our products, please look at the answers below. You can also contact us directly for deeper understanding and communication.
What is the difference between a single screw extruder machine and a twin screw extruder?
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| Item | Single Screw Extruder Machine | Twin Screw Extruder Machine |
|---|---|---|
| Number of Screws | 1 | 2 |
| Conveying Principle | It relies on friction between the material and the barrel and screw to convey materials. | The two screws mesh with each other and push materials forward. |
| Self-cleaning Ability | Basically none. You need to clean it yourself when changing materials or colors. | It has self-cleaning ability. It is convenient to change materials and colors. |
| Material Adaptability | Suitable for regular aquatic/pet extruded feed. | Suitable for high-meat, high-fat, high-moisture, or other complex formulas. |
| Common Applications | Pelletizing and regular extruded feed production. | High-end pet food and high-end aquatic animal feed. |
| Production Cost and Maintenance | Simple structure, easy maintenance, lower price. | Complex structure, high maintenance requirements, higher price. |
| Production Scale | Can cover small, medium, and large production scales. | Medium and large scales. High output is more common. |
Summary: If you only need regular extrusion processing and have limited investment cost, you can choose a single screw extruder machine. If you need to process high-meat, high-fiber, or complex raw materials and produce high-quality pellets, we recommend a twin screw extruder machine. If you want to know more about RICHI single screw extrusion machines, you can also watch on YouTube.
What is the difference between a extruder single screw and a feed pellet mill?
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| Item | Single Screw Extruder Machine | Feed Pellet Machine |
|---|---|---|
| Principle | The screw conveys materials in the barrel. It creates shear and friction. It generates high temperature and high pressure. The raw material puffs instantly when extruded. | It uses the mutual pressure of the ring die and pressure roller to compress and extrude raw materials into shape. |
| Purpose | Puffing, cooking, sterilizing, and controlling pellet floating/sinking and density. | Extrude powder raw materials into pellets and improve palatability. |
| Finished Product Features | Porous and fluffy. It can make floating, sinking, or slow-sinking pellets. | Higher density. Usually sinking pellets. |
| Main Structure | Screw, barrel, head, die, cutter. | Ring die, pressure roller, cutter. |
| Application Scenarios | Pellets that need puffing or stable in water. | Ordinary livestock and poultry feed, low-cost sinking pellets. |
What pellets are wet single screw extruder machines and dry single screw extruder machines suitable for?
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Wet single screw extruders are equipped with a conditioner by default. They can introduce steam to gelatinize materials. They are suitable for producing floating and slow-sinking aquatic feed and pet food.
Dry single screw extruder machines have no conditioning system. They do not need a boiler. They are suitable for small-batch production of ordinary ornamental fish feed and small livestock and poultry extruded feed.
Does screw speed affect finished product output?
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Generally, when screw speed increases, finished product output also increases. But shear heat also increases. This may cause overheating and faster wear. So higher speed is not always better. It must match temperature, die head resistance, and material characteristics. Only then can it play its biggest role.
How long is the warranty period of a extruder single screw?
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RICHI single screw extruders have a 12-month whole-machine warranty. During this period, if you meet non-human machine faults during use, you can contact us for free technical support. For wear parts, we supply original parts for a long time. If you need, you can order anytime. We will ship as soon as possible to ensure your production progress is not affected.
Why Choose RICHI
After more than 30 years of development, RICHI has become a machinery manufacturer with rich experience. We have achieved global success in single machine manufacturing, customized production line construction, and turnkey projects. We have enough confidence for customers to choose RICHI.
Project Experience
30+
Years
Countries and Regions Served
140+
Projects Delivered
2000+
Factory Area
100,000+
㎡
About Us
Henan RICHI Machinery Co., Ltd., established in 1995, primarily focuses on the research and development and manufacturing of feed machinery, biomass pelleting equipment, organic fertilizer pelleting equipment, and complete pelleting production lines. After more than 30 years of development, RICHI has become a professional pelleting machinery manufacturer. Our products are exported to over 140 countries and regions worldwide, earning the trust of customers both domestically and internationally.
Qualification Advantages
RICHI boasts numerous international authoritative certifications and patents, including ISO9001, CE, SGS, and TÜV. This means that the equipment you purchase can smoothly pass through customs and quality standards in various countries, with no customs clearance risks and compliant delivery. Choosing RICHI means choosing a guarantee of smooth global access and worry-free production.
