Fish Feed Density Controller for Sinking Feed Production

The Fish Feed Density Controller is a specialized device designed for sinking aquatic feed production. Installed between the extrusion and cutting sections, it helps regulate product density by increasing pressure inside the cutting chamber and reducing pressure differences during extrusion.

By improving the pressure environment at the discharge end of the extruder, the system reduces moisture flash-off and material expansion, allowing manufacturers to achieve more stable sinking feed quality and greater control over feed density.

This solution is widely used in the production of sinking fish feed, shrimp feed, crab feed, and other aquatic feeds that require precise density control.

The density controller works by creating controlled pressure in the cutting chamber of the extruder. This process helps:

• Reduce sudden moisture vaporization
• Minimize material expansion after extrusion
• Improve feed density consistency
• Enhance product stability in water
• Increase thermal and mechanical energy utilization

As a result, feed particles achieve better cooking performance and more stable sinking characteristics.

• Improved Feed Density Control: The system provides more accurate control of pellet density, helping manufacturers produce stable sinking feed with consistent product quality.
• Enhanced Feed Maturity and Water Stability: Additional thermal and mechanical energy input improves starch gelatinization and material conditioning, resulting in better feed maturity and water stability.
• Increased Production Capacity: Practical applications have shown that production capacity can be increased by approximately 15% to 30% when properly integrated with the extrusion system.
• Greater Formula Flexibility: Feed manufacturers can adjust formulations more easily while maintaining product density targets, providing greater flexibility for different feed recipes.
• Reduced Material Residue: The optimized design minimizes internal residue accumulation, improving cleaning efficiency and reducing product changeover time.
• Easy Operation and Maintenance: The system features automatic lubrication and a user-friendly design, helping reduce maintenance workload and improve operational reliability.

• Advanced Sealing Design: The upgraded sealing structure improves pressure retention inside the cutting chamber while enhancing wear resistance.
• Wear Resistant Components: Specially designed sealing materials provide longer service life under continuous production conditions.
• Automatic Lubrication System: The integrated lubrication system helps maintain stable operation and reduces routine maintenance requirements.
• Low Residue Design: The equipment is designed to minimize material retention, supporting cleaner production and easier product switching.

• Sinking fish feed production
• Shrimp feed production
• Crab feed production
• Aquatic feed extrusion lines
• Twin screw extruder systems
• High-capacity aquafeed plants

Some engineering practice examples

For sinking aquatic feed, density is one of the most important quality indicators. Without proper density control, feed may experience:

• Inconsistent sinking performance
• Reduced water stability
• Limited formulation flexibility
• Lower production efficiency

A dedicated density controller helps maintain stable production while improving feed quality and operational performance.