Dry fish feed production equipment Explained

Core Component Analysis: Functions and Key Selection Factors. The core components of a Dry fish feed pellet extruder machine include a screw, extrusion chamber, die, feeding device, drive motor, and cutting device. The screw is the core transmission component, responsible for raw material conveying and extrusion. It is typically made of 38CrMoAl alloy, with a surface hardness of HRC60 or higher after nitriding treatment, exhibiting strong wear resistance and a service life of 1500-2000 hours. The extrusion chamber works with the screw to form the extrusion space, with a wear-resistant bushing on the inner wall that can be replaced individually, reducing maintenance costs. The die is crucial for pellet forming; by changing the die diameter (1-5mm), different feed specifications can be produced. The die material must possess high strength and wear resistance. The drive motor provides power to the equipment, with power selected according to production capacity, typically 15-55kW. The cutting device cuts the extruded pellets into preset lengths; the cutting speed is adjustable to ensure uniform pellet length.

Daily Maintenance Tips: Ensure stable operation of the Dry Type fish feed pellet processing machine. First, after each production run, promptly clean any residual raw materials inside the equipment to prevent them from drying out and clogging the screw and die. Before cleaning, turn off the power and wait for the equipment to cool to below 50°C. Use a soft nylon brush to clean the screw and extrusion chamber, and use a special cleaning needle to unclog the die orifice. Never use sharp tools to scrape, as this may damage the components. Second, regularly check the wear of core components. Inspect the screw and extrusion chamber every 500 hours of operation, replace the wear-resistant bushing every 1000 hours, and replace the screw every 2000 hours. Regularly check the die orifice for deformation; if deformation is found, replace it immediately. Third, regularly add lubricating oil to the drive motor, bearings, and other transmission components, changing the lubricating oil every 500 hours to ensure smooth transmission and reduce mechanical wear. Finally, when the equipment is idle for an extended period, thoroughly clean the interior and apply a layer of food-grade anti-rust oil to the surfaces of metal components such as the screw and extrusion chamber to prevent corrosion.

Common Troubleshooting: Quickly resolve production problems. Common malfunctions of dry-type floating fish feed pellet making machines include screw jamming, poor pellet formation, and reduced production capacity. If screw jamming occurs, immediately shut off the power and allow the equipment to cool down. Disassemble the screw to clean away any remaining material and check if the particle size and moisture content meet requirements (particle size 80-120 mesh, moisture 10%-14%). Poor pellet formation and high breakage rate may indicate die blockage or screw wear; clean the die or replace the screw. Reduced production capacity may be due to excessively high or low moisture content in the raw material; adjust the moisture content or check if the screw speed is normal. Scientific daily maintenance and timely troubleshooting can ensure long-term stable operation of the dry-type fish feed extruder, improving production efficiency and feed quality.

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