Double Shaft Shredder is a widely used equipment for waste treatment and resource recycling, especially when dealing with large garbage, metal, plastic, wood, electronic waste, rubber and other materials, it can effectively break them into smaller particles for subsequent recycling or reprocessing. Double Shaft Shredder uses two rotating knife shafts to tear and crush materials. Its efficient shredding ability makes it widely used in many industries.
Working Principle
The working principle of the double shaft shredder is relatively simple. Through the relative rotation of two horizontal rotating knife shafts, the material is fed into the crushing area and torn into small pieces between the knife shafts. The following is the basic working process:
Feeding: The material is fed into the feed port of the machine, usually through a belt conveyor or a vibrating feeder.
Shredding process: The material enters between the two high-speed rotating knife shafts and is torn and crushed under the action of the knife shafts. The cutter is designed to be bidirectionally symmetrical or staggered so that the material can be sheared evenly.
Discharge: After shredding, the material is discharged through the screen or sieve hole below, and the particle size depends on the aperture of the screen or the setting of the knife.
Features of double-shaft shredder
High efficiency: The double-shaft shredder improves the crushing efficiency through the mutual cooperation of the double knife shaft, and can handle large pieces and hard materials.
Uniform particle size: The shredder has a strong crushing capacity and can adjust the final particle size through different screens.
Energy saving: Compared with single-shaft shredders, double-shaft shredders usually require lower power consumption when processing large materials.
Sturdy and durable: The structural design of double-shaft shredders is usually relatively sturdy and suitable for long-term high-intensity work.
Wide range of application: It can be used for the processing of a variety of materials such as plastics, metals, rubber, paper, wood, waste electronic products, etc.
Application of double-shaft shredders
The application scenarios of double-shaft shredders are very wide, especially suitable for the following fields:
Waste material recycling:
Waste plastics: plastic bottles, plastic bags, plastic pipes, plastic boards, etc.
Waste metals: aluminum alloys, waste cables, steel, copper, etc.
Electronic waste: the outer shell and internal components of electronic products such as televisions, refrigerators, computers, and mobile phones.
Waste disposal and resource recycling:
Pretreatment of urban garbage, domestic garbage, and industrial garbage.
Crushing and processing of waste paper, cloth, wood, and other garbage.
Automobile disassembly and processing:
Recycling and processing of automobile parts, body shells, and tires.
Rubber industry: used for shredding of waste tires for subsequent reuse or reprocessing.
Wood and organic waste: can be used for the shredding of wood waste, bamboo, branches, etc.
Structural composition of double-shaft shredders
Double-shaft shredders usually consist of the following parts:
Knife shaft: It is the core component of the shredder, usually composed of two or more shafts, with blades installed on the shaft, which are shredded by rotation. The knife is generally made of high-strength steel and has the characteristics of wear resistance.
Motor drive system: The knife shaft is driven by an electric motor to rotate. The motor power is selected according to the material characteristics and output requirements to be processed.
Body and frame: The body is usually welded from steel plates or steel materials, with good pressure resistance, ensuring the stability of the machine during operation.
Discharge port and screen: The particle size of the material is controlled by the screen or screen holes. The aperture size of the screen determines the particle size of the finished material.
Hydraulic system (some models): Some high-end double-shaft shredders are equipped with hydraulic systems for automatic adjustment of the blade gap or material feeding control.
Control system: Generally equipped with a PLC automatic control system, which can realize automatic start, stop, reverse and other functions, and some equipment can realize intelligent control.
Advantages of double-shaft shredders
Strong adaptability: It can handle materials of various hardness and shapes, especially suitable for handling large pieces and hard materials.
Simple operation: Most double-shaft shredders use a PLC control system, which is simple to operate and easy to manage.
High efficiency and energy saving: Compared with single-shaft shredders, double-shaft shredders require less power when processing large pieces of materials and have high energy utilization.
High safety: It has multiple safety protection functions, such as overload protection and emergency stop function, to ensure the safety of operators.
Precautions for use and maintenance
Check the blade regularly: Since the blade will wear under high load, it is necessary to check and replace the blade regularly to maintain a good shredding effect.
Lubrication system maintenance: Check the lubrication system of the equipment regularly to ensure that all moving parts are adequately lubricated to reduce wear and overheating.
Cleaning and maintenance: Keep the equipment clean, clean the feed port, discharge port and the inside of the machine body regularly to prevent material residue from causing equipment failure.
Operator training: Ensure that the operator is familiar with the equipment operation process and understands the safe operating procedures of the equipment.
Summary
The double-shaft shredder is a very effective waste treatment equipment with strong processing capacity and a wide range of applications. It plays an important role in recycling, waste treatment, resource reuse and other fields. Although its initial investment is high, it is still an indispensable equipment in many industries due to its high efficiency and long-term stability.
