Dry Type sinking prawn feed pellet extruder machine
Main Motor Power: 5.5–132 kW
Feed Pellet Type: Floating/Sinking
Pellet Diameter: 1–9 mm
Voltage: 220V/380V/415V/450V (customizable)
Frequency: 50/60 Hz (customizable)
Raw Materials: Shrimp meal, fish meal, soybean meal, grains, starch, and other feed ingredients
Suitable Species: Catfish, Tilapia, Grass Carp, Common Carp, Shrimp, Prawn, Crab, and other farmed aquatic species
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Product Details ofDry Type sinking prawn feed pellet extruder machine
Tianjin Mikim Technique Co., Ltd. is one of the most experienced manufacturers and suppliers of Dry Type sinking prawn feed pellet extruder machine in China. If you're going to buy cheap Dry Type sinking prawn feed pellet extruder machine made in China, welcome to get more information from our factory. All our products are with high quality and low price.
In prawn and shrimp aquaculture, feed must be highly dense to sink immediately and possess superior water stability to remain intact on the pond floor for 2–4 hours. The DGP Series Dry Type prawn feed extruder machine is engineered to meet these challenges. By precisely controlling the mechanical shear and thermal inputs, these machines produce high-density pellets without the need for an external steam boiler, making them ideal for both small farms and commercial feed mills.
1. Technical Specifications
The DGP series Dry Type prawn feed pellet extruder machine covers a wide range of production needs, from the compact DGP-40 to the industrial-grade DGP-200.
| Model | Capacity ( kg/h ) | Main motor (kw) | Feeder motor (kw) | Cutter motor (kw) | Screw diameter (mm) | Machine size (m) | Weight (kg) |
| DGP-40 | 40-50 | 5.5 | 0.4 | 0.4 | φ40 | 1.36*1.3*0.85 | 320 |
| DGP-60 | 120-150 | 15 | 0.4 | 0.4 | φ60 | 1.36*1.33*0.86 | 420 |
| DGP-70 | 200-250 | 18.5 | 0.4 | 0.4 | φ70 | 1.36*1.33*0.86 | 550 |
| DGP-80 | 300-350 | 22 | 1.5 | 0.55 | φ80 | 2.3*1.7*1.4 | 720 |
| DGP-90 | 400-450 | 30 | 1.5 | 0.55 | φ90 | 2.3*1.8*1.4 | 1100 |
| DGP-100 | 500 | 37 | 1.5 | 1.5 | φ100 | 2*2.8*1.2 | 1500 |
| DGP-120 | 600-700 | 55 | 1.5 | 1.5 | φ120 | 2.2*2.9*1.2 | 1800 |
| DGP-135 | 800-900 | 75 | 1.5 | 2.2 | φ135 | 2.2*3.1*1.37 | 2000 |
| DGP-160 | 1000-1200 | 90 | 2.2 | 2.2 | φ160 | 2.3*3.15*1.38 | 2500 |
| DGP-200 | 1800-2000 | 132 | 3 | 3 | φ200 | 2.35*3.45*1.65 | 3200 |
Note: For off-grid areas, models up to DGP-90 can be configured with Diesel Engine Drives (12HP - 60HP).
Shrimp Feed Pellet Production Using an Aquatic Feed Extruder
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2. Key Technology for Sinking Feed
Producing sinking feed with a Dry Type prawn feed pellet making machine requires a different operational logic compared to floating feed:
- Density Control: Unlike floating feed which requires "puffing," sinking pellets are processed at slightly lower temperatures and higher moisture levels (18-22%) to prevent internal air pockets.
- Compression Ratio: The DGP series utilizes a high-compression screw configuration that packs the raw materials (fish meal, wheat flour, shrimp shell meal) into a dense, heavy structure.
- Starch Gelatinization: The machine ensures that the starch is fully cooked (gelatinized) at 100°C+, which acts as a natural binder to ensure the pellet doesn't disintegrate upon touching water.
3. Structural Advantages of a Dry Type shrimp feed pellet machine
- Integrated Control Cabinets: As shown in the latest models (DGP-120+), the machines feature vertical industrial-grade control panels. These allow for precise frequency conversion (VFD) of the feeder and cutter, which is essential for uniform pellet density.
- Reinforced Puffing Chamber: The heavy-duty chamber design handles the increased internal pressure required to create sinking pellets.
- Precision Cutting System: Independent motors ensure that even at high densities, the pellets are cut cleanly to the desired length (e.g., 1.0mm for post-larvae shrimp).
4. Requirements for Prawn Feed: Water Stability & FCR
- Benthic Feeding Adaptability: Prawns are slow feeders. Our Dry Type shrimp feed extruder machines produce pellets with a water stability of 2–4 hours, preventing nutrient leaching and water pollution.
- Pathogen Elimination: The high-temperature/high-pressure process neutralizes anti-nutritional factors and harmful bacteria, leading to a healthier stock and a better Feed Conversion Ratio (FCR).
5. FAQ
Q1: How do I switch between floating and sinking feed on the same DGP Dry Type floating fish feed pellet extruder machine?
A: The "sinking" property is a result of three factors: Formula (higher mineral/protein content), Moisture (adding slightly more water), and Screw Speed/Temperature. By reducing the heating temperature and increasing the feed moisture, the expansion is suppressed, resulting in a sinking pellet.
Q2: Which raw materials improve the "sinking" quality?
A: Wheat flour and cassava starch are excellent binders for sinking feed. High-density ingredients like fish meal and bone meal also help the pellet sink faster.
Q3: Can these Dry Type prawn feed pellet extruder machines be used in remote coastal areas without stable power?
A: Yes. We offer Diesel Engine configurations for the DGP-40 through DGP-90 models. For larger models (DGP-120+), we recommend a dedicated industrial generator set to ensure the VFD control system functions correctly.
Q4: What is the maintenance cycle for the screw when making sinking feed?
A: Sinking feed creates more friction than floating feed. Therefore, we use vacuum-quenched alloy steel for the screw. Depending on the fiber content of your ingredients, the screw typically requires inspection every 800–1,200 hours of operation.
Conclusion
The DGP Series Dry Type shrimp feed pellet extruder bridges the gap between high-tech feed mills and on-site farm production. Whether you are producing 100 kg/h for a local farm or 2 tons/h for commercial distribution, our machines offer the durability and technical precision required for modern crustacean aquaculture.
Contact our engineering team for a customized layout and formulation guide for your prawn farming project.
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