How to choose and use the crusher correctly

Understanding the crush: structure and functionality

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1. Core components: A crusher comprises several key parts, including a feeding hopper, crushing chamber, knife holder, screen plate, lower hopper, and motor unit.

2. Operational mechanism: The material that requires crushing enters through the feeding port, driven either by gravity or external forces. As it moves into the pulverizer, it encounters high-speed rotation, leading to a relentless clash and friction between the material itself and the tool holder. This interaction continues until the material reaches the desired fineness, eventually being expelled through the sieve plate, transformed into a usable product.

Types of Crushers: An Overview

1) Claw knife crusher (for hard materials)

This type of crusher is adept at processing and recycling various plastics, with a particular focus on more challenging materials. It features user-friendly operations, rapid tool changes, and optimized tool holders that enhance cutting efficiency. It excels at crushing tough materials, including thick blocks and material heads, while maintaining minimal tool wear. Safety features with electronically controlled systems and a double-layered sound-insulated hopper make this model both safe and environmentally friendly. It supports varying tool types and screen sizes and is widely used for recycling materials like ABS, PE, and PP boards. The uniquely designed rectangular feeding port enhances productivity for long-strip plate materials. An optional suction fan and storage tank can be integrated for improved recycling efficiency, and its sealed bearings ensure long-lasting performance with aesthetically pleasing design.

2) Blade type crusher (for common materials)

The blade structure serves as a bridge between the claw and flat knife types and is perfect for dilapidating plastic materials, including sheets, pipes, profiles, and packaging formats. This versatile plastic pulverizer is equipped with sealed bearings for enhanced longevity of operation. Careful design considerations ensure uniform granulation of products, while heat-treated knife seats promise both durability and an elegant appearance. Screens of various sizes can be selected based on processing needs.

3) Flat knife crusher (for soft and thin materials)

This model is optimized for recycling lightweight plastics like boxes, thin tubes, and bottles. Its straightforward operation and rapid tool-changing mechanism make it a favorite among users. The wide-cut design is specifically adapted to handle large volumes of thin-walled materials, thereby improving crushing performance. With safety measures that include overload protection and interlocking power chains, this machine not only offers durability but is designed with ecological considerations in mind, allowing for different tool and sieve options to suit various needs.

Maintaining Your Plastic Crusher: Key Guidelines

1. Position the plastic crusher to facilitate ventilation, which preserves motor functionality and longevity.

2. Regular lubrication of the bearings is crucial; ensure that grease is applied as needed.

3. Periodic checks on the tool screws are important. After the initial hour of operation with a new plastic crusher, tighten the moving knife and fix the knife screws to reinforce the connection between the blade and the tool holder.

4. To preserve cutting efficiency, regularly inspect the sharpness of the tools to prevent unnecessary damage to other parts due to dull blades.

5. When replacing tools, maintain a gap of 0.8MM for crushers over 20HP and 0.5MM for those below. Adjustments can be made based on the thickness of the recycled material.

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6. Ensure that any residual material is cleared from the machine before starting it again to reduce initial resistance. Periodically remove the inertia cover and pulley cover to clean the ash outlet beneath the flange, discharging excess powder from the crusher chamber.

7. Grounding of the machine is essential for safe operation.

8. Regular inspection of the plastic breaker belt for looseness is necessary for timely adjustments.

The jaw crusher is primarily designed for crushing rock and similarly hard, abrasive materials, including granite and recycled concrete, primarily in industrial applications. It consists of a fixed and a swing plate, known as jaws, that trap and crush the rock as a motor-driven belt transfers movement to an eccentric shaft. A spring mechanism returns the movable jaw, allowing crushed materials to gradually exit the device. Once sufficiently small, materials drop into the space created between the two jaws, effectively reducing rocks to smaller, usable sizes.

Featuring a straightforward and reliable operational technology, jaw crushers require minimal maintenance and are favored worldwide. They excel when the goal is to reduce sizable blocks into manageable fragments for further processing by additional machinery.

Benefits:

• Minimal maintenance and operational expenditures due to fewer moving components

• Efficiently reduces raw materials to approximately 150 mm in size

Drawbacks:

• Not suitable for tasks requiring smaller material fractions (<150 mm). Alternative crushers may be needed for finer grain sizes.

• Inadequate for processing clay or metal content mixed with rock.

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