Waste Cardboard Shredder For Solid Waste Paper Recycling

A cardboard shredder is a mechanical device specifically designed to shred various types of cardboard. It mechanically breaks down cardboard of varying sizes, thicknesses, and stacks into smaller, uniform pieces or chunks, facilitating subsequent recycling, transportation, reprocessing, and reuse of the cardboard materials. It is a key piece of equipment in the cardboard recycling process.

Working Principle

1. Power Transmission: The motor provides power, which is transmitted to the shredder's main shaft via a transmission mechanism such as a pulley, coupling, or reducer, causing the main shaft to rotate steadily at a set speed and direction. Depending on the machine's processing capacity, a single motor, dual motors, or multiple motors may be used to ensure sufficient power to shred the cartons.
2. Material Input: Cartons to be processed are fed into the shredder's shredding chamber through a feed system (such as a hopper or conveyor). The feed system controls the speed and volume of the material to ensure uniform and continuous delivery of cartons to the shredding area. 3. Shredding Process: Within the shredding chamber, special cutting tools (such as high-hardness alloy blades and claws) are mounted on the main shaft. Once a carton enters the chamber, the high-speed rotating cutters apply shearing, squeezing, and tearing forces to the carton. The rotation of the cutters cuts and tears the carton apart, breaking it into smaller pieces. Some carton shredders utilize a dual- or quad-shaft design, where the cutters on each shaft work together to enhance the shredding effect, resulting in more efficient and uniform shredding.
4. Discharge: Shredded carton fragments are discharged through the discharge port. The size of the resulting fragments can be controlled by adjusting parameters such as the spacing between the cutters and the main shaft speed to meet the required fragment size for subsequent processing (such as packaging, transportation, and reprocessing).

Applicable Materials

1. Corrugated Cardboard: Commonly used for logistics and product packaging, corrugated cardboard boxes are the primary processing material for carton shredders, including boxes made of varying layers of corrugated cardboard.
2. Flat Cardboard: Flat cardboard boxes, such as packaging boxes and gift boxes, can also be shredded by this equipment.

3. Waste Cardboard Piles: Accumulated, disorganized waste cardboard can be directly fed into the equipment for shredding without extensive pre-processing.

Waste cardboard shredding can be performed with either a dual-shaft or single-shaft shredder. Suitable materials include:

1. Metals: Scrap steel, aluminum alloy, copper, stainless steel, and other metal products, such as used car hulls, metal shelves, and metal pipes. Shredders facilitate metal recovery and remelting.
2. Plastics: Various plastic products, such as plastic film, plastic pipes, plastic containers, and plastic pallets. Shredded plastics can be further processed into recycled plastic pellets for use in the manufacture of new plastic products.

3. Rubber: Rubber products such as used tires, rubber hoses, and rubber mats. Shredded rubber can be used to produce recycled rubber, rubber floor tiles, and other products.
4. Wood: Scrap wood, wooden pallets, wooden furniture, and tree branches. After processing in a shredder, wood can be used in industries such as biomass power generation, wood-based panels, and papermaking.
5. Paper: Waste paper, cardboard, and cartons. Shredded paper facilitates subsequent recycling in papermaking.
6. Fiber: Fiber products such as used clothing, carpets, and non-woven fabrics. These waste materials can be shredded and reprocessed into fiber products or other products.

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