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Working principle of double rotor crusher

2025-04-17 Visits:

As a revolutionary equipment in the field of solid material processing, the twin-rotor crusher has an innovative twin-rotor structure that breaks through the technical boundaries of traditional crushing machinery. The equipment uses two independently driven horizontal rotors as the core power source. Through the precisely designed motion coordination, it realizes the superposition of multi-dimensional crushing effects and becomes an important technical equipment for modern industrial crushing operations.

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The motion characteristics of the twin-rotor system are its technical core. The two rotors adopt a reverse synchronous rotation design. The main rotor speed is usually controlled at 15-25r/min, and the auxiliary rotor speed can reach 30-45r/min, forming a dynamic speed difference. When the material enters the crushing chamber, it is first crushed by the heavy hammer of the main rotor. After obtaining the initial kinetic energy, it is immediately thrown to the high-speed rotating auxiliary rotor for secondary impact crushing. This graded crushing mechanism enables the material to form a three-dimensional crushing trajectory in the cavity, effectively extending the crushing action time.


The unique structural design of the equipment creates excellent crushing performance. The twin-rotor configuration forms a trapezoidal crushing cavity, and the angle of the main crushing zone is controlled between 110°-130° to ensure that the material forms a vortex motion in the cavity. The hammer head adopts modular combination design, the weight of a single hammer head can reach 85kg, and the linear speed of the hammer end is maintained in the optimized range of 28-32m/s. The screen plate adopts a gradual screen hole structure, and the diameter of the front screen hole is 30% larger than that of the rear end, which not only ensures the crushing efficiency but also controls the particle size of the material.


In terms of the power system, the dual independent drive device is equipped with an intelligent frequency conversion control system, which can automatically adjust the speed difference according to the hardness of the material. When processing materials with a Mohs hardness of 5 or above, the system will automatically increase the speed difference of the dual rotors to 15r/min to enhance the shear crushing effect. This dynamic adjustment capability increases the equipment's processing capacity by 40%, reduces energy consumption by 25%, and stabilizes the product particle size qualification rate at more than 98%.


The dual-rotor crusher has been widely used in the fields of construction waste recycling, mining rough crushing, etc. Its unique dual-power collaborative working mechanism has successfully solved the industry pain point that it is difficult to balance the efficiency and energy consumption of traditional crushers, marking that the solid material crushing technology has entered a new stage of intelligence and efficiency.


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