Comparison of centrifugal fan and axial fan:
1. Structure: Axial fan has compact structure, small size and light weight. It can be directly driven by a high-speed motor. The transmission method is simple, but the structure is complex and maintenance is difficult. The centrifugal fan has simple structure and convenient maintenance, but the structure is bulky. Large, large installation area, low speed, complicated transmission mode, and many problems. The existing wing-shaped blades can increase the speed.
2. Performance: The axial flow type has low wind pressure, large flow, and many anti-wind methods; the centrifugal type is the opposite. In online operation, the joint work of the axial flow type is poor, and the centrifugal type is better. Axial flow is not easy to overload, while centrifugal type is easy to overload.
3. Scope of application: centrifugal fans are suitable for small flow, high wind pressure, and low speed; axial fans are the opposite. The axial flow type is suitable for mines where the resistance changes greatly but the air volume does not change much; the centrifugal type is the opposite. Generally, the ventilation of large and medium-sized mines adopts the axial flow type, and the centrifugal type is mostly used for small-scale mines, and the centrifugal fan with backward curved blades is also used for extra-large mines because of its higher efficiency.
FS type series axial flow fan is low wind pressure, large air volume ventilation; JK type series is mainly used for auxiliary ventilation of mine tunnel driving and stope working surface; K or KD type series is to improve performance and expand on the above basis The machine size can be well matched with various resistance and air volume types of ventilation networks and work online. It also adopts the direct connection structure of the motor and the impeller, so the overall stability is excellent, the structure is compact, the moisture resistance is excellent, and the installation is convenient for maintenance. It is easy to be the existing advanced ventilator.
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