Double Shaft Shredder is a kind of high efficient crushing equipment that shears, tears and squeezes materials through two parallel rotating knife shafts. Its core working principle can be summarized as “low-speed high-torque shear”, suitable for processing metal, plastic, rubber, electronic waste and other types of solid waste. The working principle of Twin Shaft Shredder is analyzed as follows:

1. Core Structure Composition
   Twin Shaft Shredder is mainly composed of the following components:
   Twin Rotor System: Two parallel mounted cutter shafts are equipped with staggered alloy steel blades on the surface, which are driven by gears or hydraulic motors and rotate in reverse at 15-50 RPM.
   Knife Design: The blades are arranged in a hexagonal or wolfsbane style to ensure that the material is bitten and torn at multiple angles as it enters.
   Screen system (optional): Controls the size of the discharged material, and any material not meeting the standard continues to be crushed in the chamber in a cyclic manner.
   Hydraulic or electric drive system: Provide high torque power to ensure stable operation even when encountering high hardness materials.

2. Crushing process in detail
3. feeding stage: the material through the conveyor belt or manually into the feed port, under the action of gravity into the shredding cavity.
4. Bite and grab: two-axis blade staggered rotation, the material will “bite” and dragged inward, the formation of the initial shear force. 3.
5. Shearing and tearing: due to the two axes rotating in the opposite direction, the material is squeezed, torn and sheared between the blades, and is broken into smaller pieces.
6. Particle size control: the crushed material is screened through the screen (if any), those that meet the size are discharged, and the larger fragments continue to be crushed in the cycle.
7. Technical Advantages
   Low speed and high torque: compared with high speed crusher, double-shaft shredder has low rotational speed but high torque, which is suitable for high toughness or high hardness materials.
   Strong adaptability: it can handle a variety of materials such as metal, plastic, tires, electronic waste, etc., and can cope with mixed waste.
   Energy saving and high efficiency: optimized cutter layout reduces idling energy consumption and improves crushing efficiency.
   Intelligent control (high end model): Equipped with overload protection, automatic reversing and intelligent monitoring system to prevent jamming or knife damage.
8. Typical application scenarios
   Scrap steel recycling: crushing automobile shells, metal parts of home appliances, etc. to improve the efficiency of scrap steel melting.
   Electronic waste disposal: dismantle circuit boards, hard disks, etc., and separate metal and non-metal components.
   Plastic recycling: shred large plastic products (such as barrels, tubes) into particles to facilitate regeneration and granulation.
   With its stable crushing performance and wide applicability, the twin-shaft shredder has become the core equipment for modern solid waste treatment and resource recycling. In the future, with the progress of intelligent and energy-saving technology, its working efficiency and environmental performance will be further improved.