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Understand the dust explosion-proof industrial fan and its working principle

As a gas conveying device, fans are widely used in industrial production. As a branch of centrifugal and induced draft fans, dust exhaust fans are increasingly showing their importance due to their special occasions and the impact on continuous industrial production. Sex.


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  working principle


   When the impeller rotates, the gas enters the impeller axially from the air inlet, is pushed by the blades on the impeller, and the energy of the gas rises, and then flows into the vane. The vanes transform the deflected airflow into an axial flow while introducing gas into the diffuser tube, further converting the kinetic energy of the gas into pressure energy and then introducing it into the working line. The dust blower blades work in a similar manner to the wing of the aircraft. However, the latter applies lift to the wing and supports the weight of the aircraft, while the dust blower fixes the position and moves the air. The cross section of the dust exhaust fan is generally a wing profile. The blade can be fixed in position or rotated about its longitudinal axis. The angle of the blade to the airflow or the blade pitch may not be adjustable or adjustable. Changing the blade angle or spacing is one of the main advantages of a dust blower. The small blade pitch angle produces a lower flow rate, while the increased spacing produces a higher flow rate.


The main factors to consider when choosing a dust blower industrial fan


   In the field of ventilation and dust collection, there are often some high-concentration dust gas that needs to be transported by the fan. When selecting such a dust-discharging fan, in addition to meeting the main performance indexes such as flow, pressure, temperature, efficiency, noise, etc., it must also be considered. Some additional factors include: 1 dust accumulation. The impeller is unbalanced, and the vibration causes the performance parameters of the fan to deteriorate. 2 wear. Causes impeller mass loss, which in turn reduces metal thickness, causes unbalanced operation, deteriorates performance, and damages the fan. 3 corrosion. Whether the dust contacted is high temperature, highly saturated and corrosive. 4 mechanical reliability. Dust-exhausting fans are often operated continuously. When the dust-dissipating components of the dust-discharging fan cause excessive turbulence and cannot operate normally, the production line often fails to operate, resulting in large economic losses. This is often related to the self-cleaning ability of the fan impeller. 5 power headroom. The selection refers to the power and the increased power consumption of dust accumulation in the future, while considering the working efficiency of the fan. For continuous large production, efficiency and reliability are very important, and efficiency and reliability are closely related to the structure and material of the impeller.


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