The shaftless drum screen is a new type of efficient sorting equipment. The following will introduce its working principle, structural characteristics, application advantages and application fields:
Working principle
The motor is connected to the drum device through a coupling via a reducer to drive the shaftless drum to rotate around its axis. After the material enters the inclined drum, it rolls and flips on the screen surface under the action of gravity and centrifugal force. Particles smaller than the screen hole fall down, and particles larger than the screen hole continue to move until they are discharged. The material stuck in the screen hole will also be ejected to prevent blockage.
Structural features
Shaftless design: Abandon the traditional central axis and adopt gear transmission or universal coupling transmission, such as Henan Zhengda’s shaftless drum screen. High-strength steel is used in key parts, scientific transmission, reduce debris entanglement and wear, reduce the torque of the reducer, and increase life.
Spiral structure: The spiral design makes the screening stroke longer and the raw materials stay longer. For example, Henan Zhengda WZS2600*6000 type, a single machine can achieve 80-250 tons of screening volume, one machine can replace two traditional shafted roller screens of the same model.
Multi-layer screen: The number of layers and aperture can be flexibly adjusted according to demand to achieve high-precision screening and effectively separate materials of different particle sizes.
Anti-blocking design: Equipped with independent belt beating shaft, built-in beater scraper, and independent high-speed feed conveyor at the feed inlet, the screen hole and the feed inlet can also ensure that the screen hole and the feed inlet are not blocked even when the moisture content is high.
Application advantages
Efficient sorting: Continuous rotary screening, full tumbling of materials, can effectively separate particles of different particle sizes and improve sorting efficiency.
Energy saving and environmental protection: Shaftless drive reduces friction loss, reduces energy consumption, and closed structure reduces dust spillage.
Strong adaptability: The screen aperture and drum speed can be flexibly adjusted according to the particle size characteristics and sorting requirements of the material.
Easy maintenance: Simple structure, key components are made of wear-resistant materials, stable operation, low maintenance cost, less equipment downtime and maintenance costs.
Application field
Mining industry: used for ore classification and impurity removal, separation of ores of different grades, and improvement of resource utilization.
Construction industry: Processing construction waste, separating useful components such as concrete blocks, brick and tile fragments, etc., to provide raw materials for recycled aggregate production.
Chemical industry: Screening and grading raw materials to ensure stable quality of raw materials, and its corrosion resistance meets the special requirements of chemical production.
Food industry: Used for raw material cleaning and impurity removal, gentle screening to protect the integrity and taste of raw materials, and sanitary performance meets the standards.