Plastic crushers are essential machines used for breaking down waste plastics and factory plastic trim, playing a crucial role in the recycling industry. These devices are widely applied in both the recycling of post-consumer waste plastics and the processing of industrial plastic scraps. The motor power of a typical plastic crusher ranges from 3.5 kW to 150 kW, while the knife roll speed varies between 150 and 500 revolutions per minute (rpm). The machine is designed with either a tangential or top feeding system, and the knife roll consists of a solid cutting roll and a hollow guide roll, ensuring efficient material processing.
The operation of a plastic crusher involves the motor driving the movable cutter head at high speed. As it rotates, the moving knife interacts with the fixed knife, creating a gap that allows for effective crushing and cutting of the plastic materials. The crushed plastic is then filtered through a screen and discharged as granules. This process ensures consistent particle size and enhances the efficiency of the recycling process.
Plastic Crushers Classification:
1. **Hard Plastic Crusher**
- Ideal for processing rigid materials such as ABS, PE, and PP boards.
- Features a rectangular feeding port designed specifically for plate materials, improving efficiency when handling long strips.
- Optional suction fan and storage tank can be integrated into a complete recycling system, maximizing material recovery.
- Sealed bearings ensure long-lasting performance, while the knife design promotes even granulation and an aesthetically pleasing structure.
2. **Strong Plastic Crusher**
- Combines claw and flat knives, making it suitable for crushing sheets, pipes, profiles, and packaging materials.
- Equipped with sealed bearings for long-term reliability and alloy steel blades for durability.
- Knife seats undergo heat-shrink treatment and are balanced for optimal performance, resulting in uniform granulation and a well-designed structure.
3. **Pipe Plastic Crusher**
- Designed for small to medium-sized plastic pipes like PE, PVC, and silicon core pipes.
- Features a circular feeding port tailored for pipe materials, enabling smooth input and efficient crushing.
- Optional suction fan and storage barrel can be added to create a complete pipe recycling system, enhancing overall efficiency.
**Plastic Crusher Maintenance Tips:**
1. Place the machine in a well-ventilated area to ensure proper cooling of the motor and extend its lifespan.
2. Regularly lubricate the bearings to maintain smooth rotation and reduce wear.
3. After the first hour of use, check and tighten the screws securing the movable knife and the knife holder to ensure stability.
4. Inspect the blades frequently to maintain sharpness and prevent damage to other components.
5. Adjust the gap between the movable and fixed knives based on the machine’s horsepower: 0.8mm for machines over 20HP, and 0.5mm for those under 20HP.
6. Before restarting, remove any residual material inside the chamber to reduce starting load. Periodically clean the inertia cover and pulley cover to clear dust buildup.
7. Ensure the machine is properly grounded for safety.
8. Check the belt tension regularly and adjust if necessary to avoid slippage.
This article is provided by Foshan Wenfeng Plastic Machinery Co., Ltd., a leading manufacturer of plastic recycling equipment. Established in 2008, the company is located in the heart of the Pearl River Delta in Foshan, Guangdong, benefiting from a strategic location and excellent transport links. With a strong commitment to quality and customer satisfaction, Wenfeng Plastic Machinery has built a reputation for reliable and efficient plastic processing solutions.
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