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Wet-Type Fish Feed Extruder for Nutrient-Rich Feed

Inverter feed system with anti-clogging settings; the thicker and larger pre-conditioning zone for ingredients; the screw design for thorough mixing and expansion; the ability to set up adjustable molds of various sizes; together with Siemens motors providing a powerful and stable drive system; make the RICHI Machinery the first choice of equipment for aquafeed production.

RICHI Machinery Co., Ltd

Brand
RICHI

aquatic industry

Application
Fish Feed

aquafeed pellets

Finished
Extruded Pellets

fish feed machine
wet type fish feed extruder

Feed Inlet

01

The design of the feed inlet ensures smooth and stable entry of raw materials into the extruder. Its wide structure in conjunction with the inverter-driven motor minimizes the risk of clogging and improves operating efficiency. The adjustable inlet controller allows for precise adjustment of the feed rate, which is essential for maintaining uniform pellet production and adapting to different feedstocks.

Extrusion

02

The screw sleeve and screw are made of special wear-resistant and high-temperature-resistant alloy steel material and are heat-treated and molded; built-in unique pressure-boosting die-punching device ensures the feed yield and quality; and equipped with an electric heating device to improve the feed expansion rate.

Discharge

03

International advanced cutting structure, the use of soft knife affixed form, the realization of stepless variable speed, can be cut into any length of the output material into the required length of the product, and is not easy to produce burrs, greatly improving the quality of aquatic puffed feed.

Structure

04

Novel and unique design, simple structure, easy to install, easy to dismantle, easy to unload, easy to operate, and covers a small area, reducing the investment in plant area.

Multifunctional

05

The simple shape and structure do not affect its multifunctional performance. Simply by replacing the discharge template with different aperture diameters and changing the cutting length, you can produce aqua feed pellets suitable for different types of aqua feed.

fish feed extruder test

Adjustable

fish feed extruder steam system

Wet-Type

fish feed extruder driver

Long-life

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richi wet type fish feed extruder
  • Feed Inlet
  • Extrusion
  • Discharge
  • Structure
  • Multifunctional
 
 

Parameter Table

Model Main Motor Power(Kw) Feeder Power(Kw) Conditioner Power(Kw) Cutting Power(Kw) Screw Diameter(mm) Overall Dimensions (mm) Production Output(TPH)
DSP-90B 37 7.5 1.1 1.1 90 2600*1600*1900 0.5-0.6
DSP-135B 75 7.5 2.2 1.5 135 3750*1980*1950 0.8-1.0

RICHI's Technological Innovations in Wet-Type Fish Feed Extruder

Technological innovation is essentially all about customer service. To make you feel the convenience of RICHI's products, technologies and solutions in the process of fish feed production.

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fish feed extruder machine

Feeding & Extruding

The speed-regulating feeding device is convenient for operation and uniform feeding; the stepless variable speed soft knife cutting system realizes the production of products of any length and ensures the quality of products without burrs.

pellet extruder machine

Design & Material

Novel and unique design, simple structure, easy to dismantle and install, easy to operate; screw sleeve and screw are made of special wear-resistant and high-temperature alloy steel material, molded by heat treatment, and the body is likewise made of high-specification alloy steel.

feed extruder machine

Control & Safety

Produces floating pellets of expanded feed that can float on the surface of the water for at least 12 hours without soaking. Maintains the nutrient content of the pellets and reduces the risk of water contamination.

extruder pellet machine

Maintenance & Replacement

The simple structure is not only easy to maintain, but also easy to replace the discharge template, which requires different aperture feeds only need to replace the required aperture template. This not only greatly improves the diversity of aquatic feed pellet production, but also maximizes the return on investment.

Your Seamless Buying Process: From Order to After-Sales Support

Explore our efficient and streamlined purchasing process, designed to simplify and optimize the acquisition of a complete aquatic extruded feed production plant. Every stage is tailored to meet your specific requirements, from the initial schematic design and precise manufacturing processes to secure payment methods and seamless on-site installation and commissioning. Furthermore, our comprehensive spare parts service provides ongoing support and ensures optimal machine performance, offering you long-term reliability and peace of mind.

build your complete pellet production line
 
Solution Formulation

Solution Formulation

Equipment Manufacture

Equipment Manufacture

Secure Payment

Secure Payment

Spare Parts Service

Spare Parts Service

Complete Solutions For Aquatic Extruded Feed Production

Customize Your Aquafeed Mill Plant Immediately
Raw Material Processing

Raw Material Processing

Essential for preparing and conditioning materials to ensure uniform quality before aquafeed extruding.

Extruding

Extruding

The well-mixed formulated raw materials are puffed and adjusted to produce floating or sinking feed pellets.

Finished Pellet Processing

Finished Pellet Processing

Involves drying, spraying, cooling, screening, and packaging to maintain expanded pellets integrity and ready them for use or sale.

Auxiliary Equipment

Auxiliary Equipment

Supports the aquatic feed pellet production line by enhancing material flow, reducing downtime, and maintaining operational efficiency.

Accessories

Accessories

Includes essential components like screws, crucial for consistent aquatic feed pellet production and machine performance.

HENAN RICHI MACHINERY CO.,LTD

GLOBAL CASE STUDY

Henan Richi Machinery Co., Ltd was founded in 1995. After nearly thirty years of development and expansion, RICHI Machinery has grown into a modern enterprise covering an area of 60,000 square meters and integrating independent research and development, production and sales.

The products involve feed pellet machinery and engineering, biomass pellet machinery and engineering, organic fertilizer machinery and engineering, conveying equipment and engineering, steel structure engineering, silo, automation control technology and engineering, etc., and each product series has passed ISO 9001 international quality management system certification and CE certification!

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Complete Solutions For Pellet Production

Explore RICHI’s Complete Solutions For Aquafeed Pellet Production

What kind of aquatic feed plant do you want to establish?

How many tons per hour about this plant you want to build?

Where will your aqua feed mill plant be built?

When do you plan to start this project?

Your Guide to Common Questions About Wet-Type Aquatic Feed Extruder

A wet-type aquatic feed extruder is a machine that produces feed for aquatic species using added steam or water during the extrusion process. This steam-infusion allows better control over moisture and heat, improving the texture, digestibility, and nutritional quality of the feed. Wet-type extruders are ideal for producing high-quality, balanced feed, often used in commercial fish and shrimp feed production. The added moisture also enables production of both floating and sinking feed types, meeting diverse dietary needs in aquaculture.

  1. Enhanced Nutritional Quality: The steam-cooking process improves feed digestibility and nutrient retention, essential for high-quality aquatic feed.
  2. Improved Feed Texture: Moisture and temperature control allow smoother, well-formed pellets that fish and shrimp can easily consume.
  3. Versatile Feed Types: Wet-type extruders can produce both floating and sinking feed by adjusting moisture and temperature.
  4. High Throughput: They support larger production scales, making them ideal for commercial feed operations.
  5. Greater Flexibility: Suitable for various raw materials and feed formulations for different aquatic species.

Species that benefit from wet-type feed include fish, shrimp, and other aquatic species that require high-quality, nutrient-dense feed. Wet-type extrusion, which incorporates steam, improves the digestibility and nutrient retention in the feed, making it particularly suited for species like tilapia, catfish, and shrimp that rely on highly digestible proteins and fats for optimal growth. This feed type supports rapid growth and health in commercial aquaculture by ensuring that the nutrients are more readily available to the aquatic animals.

Wet-type extruders differ from dry-type extruders mainly in their use of added steam or water during the extrusion process. This added moisture enhances the cooking of feed materials, creating a softer, more digestible pellet with a higher nutritional profile—beneficial for aquatic species. Wet-type extruders generally produce smoother, more uniform pellets and allow for greater control over pellet density, making it possible to produce both floating and sinking feeds. However, they require higher power and include steam-related components, which add to their complexity and maintenance needs.

Yes, wet-type extruders can produce floating feed. By adjusting the moisture, temperature, and pressure during the extrusion process, these extruders can introduce air pockets into the feed, allowing it to float. This is particularly useful for species that feed at the water's surface, such as certain fish. The flexibility to produce both floating and sinking feed types makes wet-type extruders versatile and suitable for a wide range of aquatic species.

The ideal moisture content for a wet-type aquatic feed extruder is typically around 20-30%. This level of moisture, achieved by adding steam or water during processing, helps optimize the extrusion process, ensuring the feed is properly cooked and maintains its nutritional integrity. Maintaining the correct moisture content allows for better pellet texture and stability, ideal for both floating and sinking feed.

Feed consistency in a wet-type aquatic feed extruder is controlled by adjusting the steam and temperature levels within the extrusion chamber. Increasing steam adds moisture and heat, allowing for thorough cooking, which improves pellet texture and digestibility. Temperature control ensures precise gelatinization of starches, resulting in a uniform, stable pellet structure. These adjustments help maintain the optimal balance of moisture and density in the feed, meeting the specific requirements for various aquatic species.

Wet-type aquatic feed extruders typically require more power than dry-type extruders due to the integration of steam for cooking and conditioning. Power requirements can vary but are generally higher to support steam generation, heating elements, and the motor that drives the twin screws. The exact power requirement depends on the extruder’s size and capacity, with larger machines typically needing between 30 to 120 kW or more. High power capacity ensures consistent performance, especially for large-scale commercial feed production.

A wet-type extruder requires regular maintenance to ensure optimal performance. Key tasks include cleaning the steam injection ports and conditioning chamber to prevent blockages and maintain moisture levels. The screws and barrel should be inspected for wear, as high heat and moisture can cause gradual degradation. Regular lubrication of moving parts, especially in the gearbox, is essential to prevent friction and overheating. Additionally, checking seals and gaskets for leaks and calibrating the temperature and moisture control systems will support consistent feed quality and prolong the machine's lifespan.

Yes, training is essential for operating a wet-type aquatic feed extruder. Proper training ensures operators understand how to manage steam integration, temperature, and moisture settings effectively, which are critical for producing high-quality feed. Training also covers safety protocols, regular maintenance practices, and troubleshooting, which can extend the machine’s lifespan, reduce downtime, and maintain feed consistency. With proper training, operators can maximize the extruder's efficiency and ensure reliable, high-quality production output.

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