3 mm Wet-type Floating Fish Feed Extruder Machine Test

 

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A wet floating fish feed making machine is an advanced processing machine that uses steam pre-conditioning and screw extrusion technology to transform raw feed materials (such as soybean meal, fish meal, corn, and wheat) into uniform, floating pellets. Unlike dry-type Fish Feed Extruders, it injects steam during the pre-conditioning stage, significantly improving starch gelatinization, pellet water stability, and buoyancy.

 

 

 

Model	Capacity t/h	Main Power	feeding power	screw diameter	cutting power	conditioner power	Weight
DSP85	0.35-0.4	22kw	1.1kw	80	0.75kw	1.5kw	1000kg
DSP90	0.5-0.6	30kw	1.1kw	90	1.1kw	2.2kw	2000kg
DSP100	0.6-0.7	37kw	1.1kw	100	1.1kw	3kw	2100kg
DSP120	0.7-0.8	55kw	1.1kw	120	1.5kw	3kw	2200kg
DSP135	1.0-1.5	75kw	1.5kw	135	2.2kw	5.5kw	3200kg
DSP145	2.0-3.0	90kw	2.2kw	145	2.2kw	7.5kw	4000kg
DSP160	3.0-4.0	110kw	2.2kw	160	3kw	11kw	4500kg
DSP175	4.0-5.0	132kw	3.0kw	175	3kw	15kw	5000kg

 

3.1 Raw Material Preparation

• Formula: 45% soybean meal, 25% fish meal, 20% corn flour, 8% wheat bran, 2% premix (vitamins, minerals).
• Initial Moisture: 12–14%.
• Particle Size: ≤ 1.5 mm (after crushing).

 

3.2 Key Test Indicators & Results

3.2.1 Production Capacity Test

• Test Condition: Screw speed 300 rpm, steam pressure 0.5 MPa, conditioning temperature 90°C.
• Result: Stable output of 420 kg/h, meeting the design capacity of 300–500 kg/h. The machine runs continuously for 8 hours without blockage or abnormal noise.

 

3.2.2 Pellet Quality Test

• Buoyancy Test: 100 pellets placed in water; 98 pellets floated for over 24 hours, far exceeding the industry standard of 95%.
• Water Stability Test: Pellets soaked in water for 3.5 hours remained intact, with no disintegration or powder loss.
• Gelatinization Rate: Tested using a starch iodine colorimetric method; the gelatinization rate reached 94%, ensuring high digestibility for fish.
• Appearance: Pellets are cylindrical, uniform in size (3.0 ± 0.1 mm), smooth surface, and golden color.

 

3.2.3 Energy Consumption Test

Specific Energy Consumption: 88 kWh per ton of feed, which is 15% lower than similar dry-type extruders, reducing production costs.

 

4.1 Superior Pellet Quality

• High Buoyancy: Ideal for surface-feeding fish (tilapia, catfish, carp), reducing feed waste and water pollution.
• High Digestibility: High starch gelatinization (≥90%) and protein denaturation improve nutrient absorption, promoting faster fish growth.
• Excellent Water Stability: Pellets maintain shape in water for hours, preventing water eutrophication.

4.2 High Efficiency & Cost-effectiveness

• Large Capacity: 300–500 kg/h output, suitable for small to medium-scale commercial feed mills.
• Low Energy Consumption: wet type fish food making machine reduces energy use by 10–20% compared to Dry floating fish feed making machine.
• Wide Adaptability: Processes various raw materials, including high-fiber and high-fat formulas.

4.3 Stable & Durable Design
Stainless Steel Contact Parts: Corrosion-resistant, easy to clean, and meets food safety standards.
Variable Frequency Drive: Precise control of screw speed for optimal performance under different conditions.
Overload Protection: Ensures safe operation and extends machine life.

 

 

Q1: What is the difference between wet-type and dry-type fish feed pellet maker machines?
A: Wet type fish food maker machines use steam pre-conditioning, resulting in higher gelatinization, better buoyancy, and more stable pellets. Dry-type shrimp feed pellet extruders rely on frictional heat, are simpler and cheaper, but produce lower-quality pellets with shorter floating time.

Q2: Can this machine produce sinking feed pellets?
A: Yes. By adjusting extrusion parameters (temperature, pressure, screw speed) and using a specific die, it can produce slow-sinking or sinking pellets for bottom-feeding fish and shrimp.

Q3: What is the service life of the screw and die?
A: The screw and die are made of alloy steel with heat treatment. Under normal use and proper maintenance, the screw life is 800–1000 hours, and the die life is 500–800 hours.

Q4: What maintenance is required?
A: Daily: Clean the hopper and conditioner. Weekly: Lubricate bearings, check belt tension. Monthly: Inspect screw wear, clean the die holes. Annual: Overhaul the gearbox and replace worn parts.

Q5: Is training provided for wet type fish feed production equipment operation?
A: Yes. We provide detailed operation manuals and on-site/online training for your technicians to ensure proficient and safe operation.

 

 

 

 

 

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