羅茨風(fēng)機(jī)經(jīng)過日常維護(hù)檢修，檢修內(nèi)容包括：軸承、油封更換，聯(lián)軸器柱銷更換，轉(zhuǎn)子軸肩檢查、刷鍍（在合格范圍，可不進(jìn)行），轉(zhuǎn)子動(dòng)平衡，密封襯套、密封環(huán)清理檢查，回裝，轉(zhuǎn)子間隙調(diào)整在合格范圍內(nèi)。羅茨風(fēng)機(jī)空載運(yùn)行正常，但帶載后異響，以下為核心排查方向：

　　The Roots blower undergoes daily maintenance and repair, including replacement of bearings and oil seals, replacement of coupling pins, inspection and brushing of rotor shaft shoulders (within the qualified range, optional), rotor dynamic balancing, cleaning and inspection of sealing bushings and rings, reinstallation, and adjustment of rotor clearance within the qualified range. The Roots blower is running normally without load, but there is abnormal noise after being loaded. The following are the key troubleshooting directions:

　　1. 葉輪與機(jī)殼間隙異常（核心懷疑點(diǎn)）

　　1. Abnormal clearance between impeller and casing (core suspicion point)

　　冷態(tài)間隙過?。?/p>

　　Cold state gap too small:

　　手動(dòng)盤車，偏緊的話可能是葉輪與機(jī)殼靜態(tài)間隙過?。ǖ陀?.3mm），空載時(shí)勉強(qiáng)運(yùn)轉(zhuǎn)，帶載后受熱膨脹或氣流推力導(dǎo)致葉輪位移，直接與機(jī)殼碰磨。

　　If the manual turning is too tight, it may be due to the static clearance between the impeller and the casing being too small (less than 0.3mm). When operating under no-load conditions, the impeller may experience displacement due to thermal expansion or airflow thrust after being loaded, resulting in direct friction with the casing.

　　處理：

　　handle:

　　停機(jī)冷卻后，用塞尺測(cè)量葉輪與機(jī)殼的徑向、軸向間隙（需按廠家標(biāo)準(zhǔn)，通常徑向0.4-0.6mm，軸向0.3-0.6mm），同時(shí)還需測(cè)量轉(zhuǎn)子之間的間隙，包括轉(zhuǎn)子垂直間隙和轉(zhuǎn)子平行間隙；若間隙過小，調(diào)整機(jī)殼定位銷或墊片厚度或調(diào)整同步齒。

　　After the shutdown cooling, measure the radial and axial clearances between the impeller and the casing with a feeler gauge (according to the manufacturer's standard, usually 0.4-0.6mm in the radial direction and 0.3-0.6mm in the axial direction). At the same time, measure the clearances between the rotors, including the vertical clearance and parallel clearance of the rotors; If the gap is too small, adjust the thickness of the casing positioning pin or gasket or adjust the synchronous teeth.

　　葉輪軸彎曲/變形：

　　Bending/deformation of impeller shaft:

　　動(dòng)平衡合格僅說明質(zhì)量分布均勻，但若軸輕微彎曲，帶載時(shí)受力變形會(huì)導(dǎo)致周期性摩擦。

　　The qualified dynamic balance only indicates that the mass distribution is uniform, but if the shaft is slightly bent, the deformation under load will cause periodic friction.

　　處理：

　　handle:

　　拆卸葉輪，用百分表測(cè)量軸的徑向跳動(dòng)（允許值一般≤0.05mm）；若超差，需校直或更換轉(zhuǎn)子。

　　Disassemble the impeller and measure the radial runout of the shaft with a dial gauge (allowable value generally ≤ 0.05mm); If it exceeds the tolerance, it is necessary to straighten or replace the rotor.

　　2. 齒輪嚙合異常（需拆檢驗(yàn)證）

　　2. Abnormal gear meshing (requires disassembly and verification)

　　齒輪副裝配問題：

　　Gear pair assembly issues:

　　更換軸承或油封時(shí)，若齒輪箱拆裝后未準(zhǔn)確復(fù)位，可能導(dǎo)致齒面接觸不良或齒隙不均（標(biāo)準(zhǔn)齒隙0.1-0.3mm）。

　　When replacing bearings or oil seals, if the gearbox is not accurately reset after disassembly, it may result in poor tooth contact or uneven tooth clearance (standard tooth clearance 0.1-0.3mm).

　　處理：

　　handle:

　　拆開齒輪箱蓋，用壓鉛法或塞尺測(cè)量齒隙；檢查齒面是否有偏磨、點(diǎn)蝕（如有需更換齒輪）。

　　Remove the gearbox cover and measure the backlash using lead pressure or a feeler gauge; Check for eccentric wear and pitting on the tooth surface (if necessary, replace the gear).

　　同步齒輪軸向定位偏差：

　　Axial positioning deviation of synchronous gear:

　　軸承更換后若鎖緊螺母未擰到位，齒輪軸向竄動(dòng)會(huì)引起嚙合錯(cuò)位，帶載時(shí)異響明顯。

　　If the locking nut is not tightened properly after bearing replacement, the axial movement of the gear will cause meshing misalignment, and there will be obvious abnormal noise under load.

　　處理：

　　handle:

　　檢查齒輪軸向固定螺栓和鎖緊螺母的預(yù)緊力；確保齒輪軸向游隙≤0.05mm。

　　Check the pre tightening force of the gear axial fixing bolts and locking nuts; Ensure that the axial clearance of the gear is ≤ 0.05mm.

　　3. 聯(lián)軸器對(duì)中不良（隱藏風(fēng)險(xiǎn)）

　　3. Poor alignment of the coupling (hidden risk)

　　對(duì)中誤差未消除：

　　The center error has not been eliminated:

　　僅更換柱銷無法解決對(duì)中問題，負(fù)載時(shí)扭矩傳遞導(dǎo)致偏差放大，引發(fā)振動(dòng)異響。

　　Simply replacing the column pin cannot solve the alignment problem, as torque transmission during loading causes deviation amplification and leads to vibration and abnormal noise.

　　處理：

　　handle:

　　使用激光對(duì)中儀重新校準(zhǔn)聯(lián)軸器（徑向/軸向偏差≤0.05mm）；檢查地腳螺栓是否松動(dòng)，底座是否水平。

　　Use a laser alignment instrument to recalibrate the coupling (radial/axial deviation ≤ 0.05mm); Check if the anchor bolts are loose and if the base is level.

　　4. 密封件安裝過緊（摩擦阻力）

　　4. Tight installation of seals (frictional resistance)

　　油封預(yù)緊力過大：

　　Excessive pre tightening force of oil seal:

　　新?lián)Q油封若安裝時(shí)過度壓緊，會(huì)導(dǎo)致軸與密封件摩擦阻力提升，空載尚可運(yùn)行，帶載后摩擦加劇產(chǎn)生異響。

　　If the newly replaced oil seal is excessively tightened during installation, it will cause an increase in frictional resistance between the shaft and the seal, which can still operate under no-load conditions. However, after being loaded, friction will intensify and produce abnormal noise.

　　處理：

　　handle:

　　檢查軸與油封接觸面是否有過熱發(fā)藍(lán)痕跡；重新安裝油封，確保軸向壓力均勻（可涂抹潤(rùn)滑脂減少摩擦）。

　　Check whether there are signs of overheating and bluing on the contact surface between the shaft and the oil seal; Reinstall the oil seal to ensure even axial pressure (lubricating grease can be applied to reduce friction).

　　軸承座壓板接觸：

　　Bearing seat pressure plate contact:

　　在軸承座回裝過程中，壓板安裝錯(cuò)誤，出現(xiàn)重疊部分，首次空載時(shí)可運(yùn)行，帶載后軸向力提升，將產(chǎn)生異響，此時(shí)再次空載，異響不會(huì)消失。

　　During the reinstallation process of the bearing seat, the pressure plate was installed incorrectly, resulting in overlapping parts. It can be operated under no-load for the first time, but when loaded, the axial force increases, causing abnormal noise. At this time, when unloaded again, the abnormal noise will not disappear.

　　處理：

　　handle:

　　檢查軸承座壓板是否有重疊部分；軸承外圈是否干凈，壓板翹起的一面軸承外圈會(huì)存有油，壓實(shí)的則不會(huì)。

　　Check if there are overlapping parts on the bearing seat pressure plate; Is the outer ring of the bearing clean? The raised side of the pressure plate may contain oil on the outer ring of the bearing, but if it is compacted, it will not.

　　5. 系統(tǒng)氣動(dòng)問題（需排除背壓異常）

　　5. Pneumatic issues with the system (excluding abnormal back pressure)

　　出口管路設(shè)計(jì)缺陷：

　　Defects in export pipeline design:

　　若管路存在急彎、縮徑或消音器堵塞，帶載時(shí)氣流脈動(dòng)頻率與風(fēng)機(jī)激發(fā)頻率共振，產(chǎn)生氣動(dòng)噪聲。

　　If there are sharp bends, reduced diameters, or blocked silencers in the pipeline, the pulsating frequency of the airflow under load will resonate with the excitation frequency of the fan, generating aerodynamic noise.

　　處理：

　　handle:

　　檢查管路壓力是否異常波動(dòng)（安裝壓力表監(jiān)測(cè)）；在風(fēng)機(jī)出口加裝柔性膨脹節(jié)或調(diào)整管路布局；檢查出口單向閥是否可正常啟閉；出口消音器是否內(nèi)部異物或損壞。

　　Check for abnormal fluctuations in pipeline pressure (install pressure gauges for monitoring); Install flexible expansion joints or adjust pipeline layout at the outlet of the fan; Check if the one-way valve at the outlet can be opened and closed normally; Is there any foreign object or damage inside the outlet muffler.

　　排查步驟優(yōu)先級(jí)建議

　　Suggestions for prioritizing troubleshooting steps

　　緊急停機(jī)檢查：

　　Emergency stop inspection:

　　拆卸進(jìn)出口管道，手動(dòng)盤車感受阻力是否均勻，定位摩擦點(diǎn)；

　　Dismantle the import and export pipelines, manually rotate the disc to check if the resistance is uniform, and locate the friction points;

　　測(cè)量葉輪靜態(tài)間隙，對(duì)比廠家標(biāo)準(zhǔn)。

　　Measure the static clearance of the impeller and compare it with the manufacturer's standard.

　　齒輪箱開蓋檢查：

　　Gearbox cover opening inspection:

　　檢查齒面接觸痕跡（正常應(yīng)居中無偏磨），測(cè)量齒隙。

　　Check the contact marks on the tooth surface (normally centered without eccentric wear), and measure the tooth clearance.

　　聯(lián)軸器對(duì)中復(fù)測(cè)：

　　Coupling centering retest:

　　使用專業(yè)工具校準(zhǔn)，確保對(duì)中精度

　　Use professional tools for calibration to ensure alignment accuracy

　　若上述排查仍未解決，需考慮機(jī)殼變形（長(zhǎng)期運(yùn)行熱應(yīng)力導(dǎo)致）或材料疲勞（葉輪微觀裂紋），建議進(jìn)行三維坐標(biāo)檢測(cè)或滲透探傷或返廠維修。

　　If the above investigation still does not solve the problem, it is necessary to consider the deformation of the casing (caused by long-term operation thermal stress) or material fatigue (micro cracks in the impeller). It is recommended to perform three-dimensional coordinate testing or penetrant testing or return to the factory for repair.

　　本文由 羅茨鼓風(fēng)機(jī)  友情奉獻(xiàn).更多有關(guān)的知識(shí)請(qǐng)點(diǎn)擊  http://www.guangda-co.com/  真誠(chéng)的態(tài)度.為您提供為多維度的服務(wù).更多有關(guān)的知識(shí)我們將會(huì)陸續(xù)向大家奉獻(xiàn).敬請(qǐng)期待.

　　This article is a friendly contribution from Roots blower For more related knowledge, please click http://www.guangda-co.com/ Sincere attitude To provide you with comprehensive services We will gradually contribute more relevant knowledge to everyone Coming soon.