羅茨風(fēng)機是一種容積式風(fēng)機，有兩個(gè)三葉葉輪在由機殼和墻板密封的空間中相對轉動(dòng)。今天，我們就來(lái)講講羅茨風(fēng)機軸承的那些事。

　　Roots blower is a positive displacement fan with two three bladed impellers that rotate relative to each other in a space sealed by a casing and wall panel. Today, let's talk about the bearings of Roots blower.

　　羅茨風(fēng)機剛開(kāi)始工作時(shí)軸承部位的振動(dòng)很小，但是隨著(zhù)運轉時(shí)間的加長(cháng)，風(fēng)機內粉塵會(huì )不均勻的附著(zhù)在葉輪上，逐漸破壞風(fēng)機的動(dòng)平衡，使軸承振動(dòng)逐漸加大，一旦振動(dòng)達到風(fēng)機允許的最大值11mm/s時(shí)（用振幅值表示的最大允許值如下），風(fēng)機必須停機修理（清除粉塵堆積，重做動(dòng)平衡）。因為這時(shí)已是非常危險的，用戶(hù)千萬(wàn)不可強行使用。在風(fēng)機振動(dòng)接近危險值時(shí)，有測振儀表的會(huì )報警。

　　At the beginning of operation, the vibration of the bearing part of the Roots blower is very small. However, as the operating time increases, the dust inside the blower will unevenly adhere to the impeller, gradually disrupting the dynamic balance of the blower and increasing the vibration of the bearings. Once the vibration reaches the maximum allowable value of 11mm/s (represented by the amplitude value below), the blower must be stopped for repair (to remove dust accumulation and redo dynamic balance). Because it is already very dangerous at this point, users must not forcefully use it. When the vibration of the fan approaches the dangerous value, the vibration measuring instrument will sound an alarm.

　　風(fēng)機軸承振動(dòng)的最大允許值為：

　　The maximum allowable value of fan bearing vibration is:

　?。ǎ保┯幂S承震動(dòng)速度有效顯示時(shí)為：11mm/s。

　　(1) The effective display of bearing vibration speed is 11mm/s.

　?。ǎ玻┯幂S承振幅顯示時(shí)為以下值：

　　(2) When displayed with bearing amplitude, the following values are obtained:

　　??a.電機同步轉速為3000轉/分時(shí)：最大允許值為：0.1mm（雙振幅）

　　When the synchronous speed of the motor is 3000 revolutions per minute: the maximum allowable value is 0.1mm (double amplitude)

　　b.電機同步轉速為1500轉/分時(shí)：最大允許值為：0.2mm（雙振幅）

　　b. When the synchronous speed of the motor is 1500 revolutions per minute: the maximum allowable value is 0.2mm (double amplitude)

　　c.電機同步轉速為1000轉/分時(shí)：最大允許值為：0.31mm（雙振幅）

　　c. When the synchronous speed of the motor is 1000 revolutions per minute: the maximum allowable value is 0.31mm (double amplitude)

　　d.電機同步轉速為750轉/分時(shí)：最大允許值為：0.4mm（雙振幅）

　　d. When the synchronous speed of the motor is 750 revolutions per minute: the maximum allowable value is 0.4mm (double amplitude)

　　e.電機同步轉速為600轉/分時(shí)：最大允許值為：0.5mm（雙振幅）?

　　e. When the synchronous speed of the motor is 600 revolutions per minute, the maximum allowable value is 0.5mm (double amplitude)?

　　f.電機同步轉速為500轉/分時(shí)：最大允許值為：0.6mm（雙振幅）

　　f. When the synchronous speed of the motor is 500 revolutions per minute: the maximum allowable value is 0.6mm (double amplitude)

　　風(fēng)機的軸承溫度正常時(shí)為≤70℃，如果一旦升高到70℃，有電控的應（會(huì )）報警。此時(shí)應查找原因，首先檢查冷卻水是否正常？軸承油位是否正常？如果一時(shí)找不到原因，軸承溫度迅速上升到90℃，有電控的應（會(huì )）再次發(fā)出報警、停車(chē)信號。?

　　When the bearing temperature of the fan is normal, it is ≤ 70 ℃. If it rises to 70 ℃, there should be an electronic control alarm. At this point, the cause should be investigated. First, check if the cooling water is functioning properly? Is the bearing oil level normal? If the cause cannot be found for a moment and the bearing temperature rapidly rises to 90 ℃, the electronic control system will issue an alarm and stop signal again.?

　　風(fēng)機開(kāi)車(chē)、停車(chē)或運轉過(guò)程中，如發(fā)現不正?，F象應立即進(jìn)行檢查，檢查發(fā)現的小故障應及時(shí)查明原因設法消除。如發(fā)現大故障（如風(fēng)機劇烈振動(dòng)、撞擊、軸承溫度升劇烈上升等）應立即停車(chē)進(jìn)行檢查。

　　If any abnormal phenomena are found during the driving, parking or operation of the fan, immediate inspection should be carried out. Any minor faults found during the inspection should be promptly identified and resolved. If a major malfunction is found (such as severe vibration, impact, or significant increase in bearing temperature), the vehicle should be stopped immediately for inspection.

　　風(fēng)機首次運行一個(gè)月后，應重新更新更換潤滑油（或脂）以后除每次拆修后應更換外，正常情況下1～2月更換一次潤滑油（或脂），也可根據實(shí)際情況更換潤滑油（或脂）。

　　After the first month of operation of the fan, the lubricating oil (or grease) should be updated and replaced. In addition to being replaced after each disassembly and repair, the lubricating oil (or grease) should be replaced once every 1-2 months under normal circumstances, or it can be replaced according to the actual situation.

　　正確的維護、保養，是風(fēng)機安全可靠運行，提高風(fēng)機使用壽命的重要保證。因此，在使用風(fēng)機時(shí)，必須引起充分的重視。

　　Proper maintenance and upkeep are important guarantees for the safe and reliable operation of fans and the improvement of their service life. Therefore, when using fans, sufficient attention must be paid.