Introduction to Wet Crusher Granulators
In the plastic recycling industry, efficient size reduction is critical for processing materials like PET bottles and plastic films. Wet crusher granulators are specialized machines designed to operate at high rotational speeds—typically between 200 to 800 RPM—using heavy-duty, often adjustable knives mounted on an open, hollow rotor. As these high-speed blades interact with stationary counterparts on the granulator housing, they cut feedstock into consistent flakes or regrinds. A sizing screen at the base ensures output uniformity, with particles usually ranging from several inches down to 1/8 of an inch.
What sets wet granulators apart is the integration of a continuous water spray into the cutting chamber. This feature is particularly beneficial in washing lines, as it not only reduces material size but also pre-cleans contaminants from plastics. The water acts as a lubricant, minimizing heat and friction to extend blade life and reduce maintenance frequency.
How a Wet Crusher Granulator Works
Wet crusher granulators are engineered for durability and efficiency in demanding recycling environments. The process begins when plastic feedstock enters the cutting chamber. Rotating and stationary blades work in tandem to shred materials, while a constant water stream is injected into the system. This serves multiple purposes: it suppresses dust, reduces operational noise, cools the blades, and initiates the cleaning process by rinsing away dirt and residues.
The presence of water is a game-changer for recycling operations. It allows the machine to handle dirty or contaminated plastics without premature blade wear or overheating. The sized material exits through a perforated screen, ensuring consistency ideal for subsequent washing, drying, and pelletizing stages. For businesses investing in a full washing line, incorporating a wet granulator from a reputable manufacturer like ASG Machine can significantly improve throughput and end-product quality.
Advantages of Using a Wet Granulator in Recycling Lines
- Enhanced Cleaning Efficiency: The water spray provides an initial wash, removing adhesives, labels, and surface contaminants.
- Extended Blade Lifespan: Water reduces friction and heat, lowering the need for frequent sharpening or replacement.
- Dust and Noise Reduction: Wet operation minimizes airborne particles and creates a safer, quieter workplace.
- Higher Throughput: Designed for continuous operation, these granulators can process large volumes of material per hour.
- Versatility: Suitable for a variety of plastics, including PET, HDPE, LDPE, and PP.
Key Specifications and Model Comparison
When selecting a wet crusher granulator, it’s essential to review technical specifications to match the machine to your operational needs. Below is a detailed comparison of popular models:
| Model # | Rotor Diameter | Knife Width | Rotating Speed | Motor Power | Capacity |
|---|---|---|---|---|---|
| SWP630-1000 | ⌀630mm | 1000mm | 470 rpm | 55 KW | 1000 kg/h |
| SWP630-1200 | ⌀630mm | 1200mm | 470 rpm | 55 KW | 1200 kg/h |
| SWP700-1000 | ⌀700mm | 1000mm | 470 rpm | 75 KW | 1500 kg/h |
| SWP700-1200 | ⌀700mm | 1200mm | 470 rpm | 75 KW | 1800 kg/h |
| SWP800-1000 | ⌀800mm | 1000mm | 470 rpm | 90 KW | 2000 kg/h |
| SWP800-1200 | ⌀800mm | 1200mm | 470 rpm | 90 KW | 2500 kg/h |
Industry Applications and Trends
Wet crusher granulators are widely used in plastic recycling facilities, especially those processing post-consumer PET bottles and agricultural films. The global push toward circular economy models has increased demand for efficient, reliable size-reduction equipment. Innovations include improved blade materials for longer life, smart monitoring systems for predictive maintenance, and energy-efficient motors that reduce operational costs.
Brands like ASG Machine are at the forefront, offering machines that integrate seamlessly with full washing lines, providing end-to-end solutions for recyclers worldwide.
Buying Guide: Choosing the Right Wet Granulator
- Throughput Requirements: Match the machine’s capacity with your daily processing goals.
- Material Type: Ensure the granulator can handle the specific plastics you recycle.
- Maintenance Needs: Opt for models with easy access to blades and screens.
- Water Usage: Consider water recycling systems to minimize consumption.
- Supplier Reputation: Choose established manufacturers known for reliability and service.
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Frequently Asked Questions
Q: What is the difference between a dry and wet granulator?
A: Dry granulators operate without water and are suitable for clean materials, while wet granulators use water to reduce heat, suppress dust, and pre-clean contaminated plastics.
Q: How often do the blades need sharpening?
A: Depending on usage and material, blades in a wet granulator typically last longer due to water cooling. Sharpening may be required every 400-600 operational hours.
Q: Can wet granulators handle other materials besides PET?
A: Yes, these machines can process various plastics, including HDPE, PVC, and LDPE, though configuration adjustments might be needed.
Q: What is the typical lifespan of a wet crusher granulator?
A: With proper maintenance, a high-quality granulator can last 10-15 years.
Q: Do you offer custom solutions for specific needs?
A: Yes, manufacturers like ASG Machine provide customized granulators tailored to unique material types and capacity requirements.
Place An Order
The general lead time for all single-piece, standard equipment orders is 30 days. For custom orders or complete washing lines, the lead time is between 60 – 90 days. The actual lead time will depend heavily on the complexity of the project as well as the amount of machinery we have in queue at the time of your order.
Contact us to discuss pricing and ordering details. Here is a brief summary of our ordering procedures.
