The centrifugal fan with forward curved blades operates at a relatively low speed and is usually suitable for high air volume and low static pressure. Typical flow range is 30% - 80% WOCMS (full open flow). The highest hydrostatic efficiency is 60% - 68%, which usually occurs on the slightly right side of the maximum hydrostatic pressure. The power curve has a tendency to increase, and it is an "easy overload" fan. The advantages of forward-bending blade centrifugal fan are low cost, low rotating speed, the choice of finer shaft and smaller bearings, and a wide operating range. The disadvantage is that the shape of the performance curve may be parallel to the resistance curve of the pipeline network, and the reduction of the static pressure of the system may lead to overload of the motor. In addition, the blade structure strength is low and can not run at a higher speed. 1、下降部件之间抵触
1. Conflict between falling parts
Between bearings and tooth surfaces, there is mutual movement, which participates in the role of lubricating oil on the surface, that is, separating the contact surface to reduce the resistance between components and advance the effectiveness of mechanical equipment.
2. Reduce wear and tear
Lubricating oil between bearings or tooth surfaces can reduce the resistance load, and then reduce the wear of equipment.
Because of the role of the axial flow fan, the equipment is in a long period of operation, the external temperature is bound to be high heat, adding lubricant is able to reduce the device's anti-trigger heat.
Being outdoors for a long time will lead to rust on the surface of the equipment. Adding lubricating oil can isolate air and corrosive gas.
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