company news about Testing for Our Dry Type Dog Food Pellet Extruder Machine of the 150-350kg/h Capacity

Testing a 150-350kg/h dry type dog food extruder is essential to ensure consistent starch gelatinization and pellet expansion without the use of a steam boiler. This guide covers technical parameters, testing protocols, and troubleshooting for small-to-medium scale pet food production.

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1. Understanding Dry Type Extrusion Technology

A Dry Type dog food extruder machine relies on mechanical friction and shear force to generate heat (120°C-160°C). Unlike wet type machines, it does not require an external steam boiler, making it the most cost-effective solution for pet food startups and medium-sized farms.

Why the 150-350kg/h model?

 It strikes the perfect balance between low power consumption and commercial-scale output, capable of producing roughly 1.5 to 3.5 tons of kibble per 10-hour shift.

2. Technical Specifications & Benchmarks 

During a professional test, our engineers look for these specific metrics:

3. The Professional Testing Protocol

Step 1: Pre-Heating & Friction Build-up

Dry extruders don't start at 150°C.

• Pro-Tip: During testing, we start with a "start-up mix" (higher moisture) to lubricate the screw and gradually increase the friction heat until the barrel reaches the operating temperature.

Step 2: Ingredient Adaptability Test

We test the Dry Type dog food pellet machine with various protein-to-starch ratios.

• High Meat Formulas: Test the screw's ability to handle animal fats (which can act as a lubricant and reduce expansion).

• Grain-Based Formulas: Monitor for blockages in the 3mm-8mm die holes.

Step 3: Pellet Uniformity & "Flash" Expansion

As the material exits the die, the sudden pressure drop causes "flash evaporation."

• Evaluation: We measure the "fines" (dust). High-quality testing should result in less than 1% dust content.

Step 4: Post-Extrusion Cooling

Even in "dry" extrusion, pellets exit at 15-18% moisture. A successful test includes a cooling conveyor or dryer test to ensure pellets reach <10% moisture for safe packaging.

4. Troubleshooting Common Test Failures

If the machine isn't performing as expected during the trial, check these three areas:

1. Pellets are too hard/dense: The temperature is too low or moisture is too high. Decrease the water input to increase friction heat.

2. Machine "Choking" or Jamming: Raw material fineness is too coarse. Ensure all ingredients are ground to 60-80 mesh.

3. Uneven Pellet Lengths: The cutter speed is not synchronized with the extrusion speed. Adjust the VFD (Variable Frequency Drive) on the cutting motor.

5. FAQ: 

Q: Can I make grain-free dog food with a Dry Type pet food extruder machine?
A: Yes. However, grain-free recipes (using peas or potatoes) require higher shear force. Our 150-350kg/h machine uses a high-chromium alloy screw designed to handle these abrasive plant proteins.

Q: Does "dry type" mean I don't add any water?
A: No. You still need to add 15-20% water into the mixer. "Dry type" simply means you don't need a steam boiler to inject live steam into the barrel.

Q: What is the shelf life of pellets made from this Dry Type dog food pellet maker machine?
A: If dried to 8-10% moisture and cooled properly after testing, the shelf life is typically 6 to 12 months, depending on the fat content and antioxidants used.

Q: How often do I need to replace the screw and die?
A: For a 150-350kg/h capacity, the screw typically lasts for 500-800 tons of production, depending on the abrasiveness of your ingredients (e.g., bone meal wears parts faster than soybean meal).

Q: How many shapes can I produce?
A: Infinite. By changing the die plate, you can produce hearts, triangles, circles, and bone shapes. Each die change takes less than 15 minutes.

6. Why This Machine is the Best Choice for Startups

• Low Infrastructure Cost: No need for pressure vessel certifications or expensive boiler piping.

• Small Footprint: Ideal for small workshops.

• High ROI: Low maintenance combined with premium-quality output allows for quick recovery of the initial investment.