The difference between double-shaft shredder and single-shaft shredder

2024.8.19

Double-shaft shredders and single-shaft shredders differ significantly in many aspects. The following is a detailed analysis of the main differences between the two:

1. Power shredding system

Double-shaft shredder: It uses double-shaft knife rollers for relative motion to reduce the size of the material by shearing, tearing and squeezing. The two shredding shafts rotate at the same time to shred the material. This design makes the shredding process more efficient and uniform.

Single-shaft shredder: Only one shredding shaft rotates in the middle to shred items. The material enters the shredding box through the feeding system. The box carries shredding blades. The push box pushes the material to the vicinity of the blades. The material is torn into small pieces by the combined effects of tearing, squeezing and shearing by the shredding blades and discharged from the sieve holes.

2. Application fields and applicability

Double-shaft shredder: Due to its efficient shredding capacity and wide applicability, double-shaft shredders are widely used in the treatment of various wastes such as waste plastics, waste rubber, wood, biomass, kitchen waste and electronic waste. In particular, double-shaft shredders play an important role in the recycling of industrial waste, such as electronic manufacturing, wood processing, incineration and destruction of domestic waste, and waste treatment in related industries such as plastic products and glass products.

Single-shaft shredder: Although single-shaft shredders also have their application fields, such as shredding of waste plastic pipes, rubber, wood, paper and other waste materials, they are highly targeted and have a relatively narrow scope of application. In some specific scenarios, such as when it is necessary to process materials with strong entanglement or when a small amount of light and thin metal objects are allowed in the materials, single-shaft shredders may be more suitable.

3. Performance characteristics

Double-shaft shredder: It has the characteristics of low speed, high torque and low noise. Its bearing seat adopts a split design, which is convenient for disassembly and tool replacement. At the same time, the double-shaft shredder adopts a microcomputer automatic control system with start, stop, reversing and automatic reversing functions, which is easy to operate and highly automated.

Single-shaft shredder: Although its automation level is also high, its energy consumption may be higher than that of the double-shaft shredder. In addition, the shredding block size of the single-shaft shredder is usually smaller, which is suitable for scenes with high requirements for shredding particle size.

Fourth, Maintenance and Cost

Double-shaft shredder: Due to its relatively complex structure, its maintenance cost may be slightly higher than that of the single-shaft shredder. However, considering its efficient working performance and wide application areas, the long-term return on investment of the double-shaft shredder is generally higher.

Single-shaft shredder: Its tool use and maintenance costs are relatively low, and it is also convenient to replace the tool. This makes the single-shaft shredder more competitive in some cost-sensitive scenes.

Double-shaft shredders and single-shaft shredders differ significantly in terms of power shredding systems, application areas and applicability, performance characteristics, maintenance and costs. Users should make comprehensive considerations based on actual needs and budget when choosing.