文章來源： 作者：羅茨機電 發布時間：2021-07-07 瀏覽次數：1467
When determining the variable speed category of centrifugal fan, the critical speed ratio of mechanical equipment should be paid attention to, otherwise, when the speed ratio is adjusted to its natural frequency, the equipment may be damaged. When selecting the speed change device, the load characteristics of the fan should be matched as far as possible to avoid the bad actual operation effect. But we should follow a standard, that is, the fan speed ratio should not be too large, but its smaller speed ratio should not be less than 50% of the rated value.
If the working voltage can be adjusted to maintain in a moderate condition, the application of centrifugal fan in the factory can not only achieve the goal of environmental protection and energy saving, but also achieve high efficiency, so that the fan can achieve the expected application effect. Combined with practice, in order to protect the centrifugal fan from being damaged when it is terminated, when the working temperature is less than 5 ℃, the residual water in the machine equipment and pipeline should be discharged to avoid locking and damaging the centrifugal fan and pipeline.
If the centrifugal fan in the factory needs to be stopped for a long time, in addition to the remaining water discharged, the outer surface of its rolling bearing and other components shall be coated with anti rust agent to prevent corrosion, so that after the motor rotor moves, the original higher position will be located in less parts. With such maintenance, the fan will maintain its original condition when it is put into operation again.