羅茨鼓風(fēng)機的工作原理、操作規程及常見(jiàn)故障處理

　　The working principle, operating procedures, and common troubleshooting of Roots blower

　　羅茨鼓風(fēng)機作為容積式風(fēng)機的典型代表，憑借其結構簡(jiǎn)單、運轉平穩、性能穩定等特點(diǎn)，在污水處理、水產(chǎn)養殖、水泥輸送、化工冶煉等領(lǐng)域有著(zhù)廣泛應用。本文將全面介紹羅茨鼓風(fēng)機的工作原理、規范操作流程以及常見(jiàn)故障處理方法，幫助操作人員更好地理解和使用這一重要設備。

　　As a typical representative of positive displacement fans, Roots blowers are widely used in fields such as sewage treatment, aquaculture, cement transportation, and chemical smelting due to their simple structure, smooth operation, and stable performance. This article will comprehensively introduce the working principle, standardized operating procedures, and common troubleshooting methods of Roots blower, helping operators better understand and use this important equipment.

　　一、羅茨鼓風(fēng)機的工作原理

　　1、 Working principle of Roots blower

　　羅茨鼓風(fēng)機是一種容積式回轉風(fēng)機，其核心工作原理基于兩個(gè)轉子的同步反向旋轉來(lái)實(shí)現氣體的強制輸送。與普通離心風(fēng)機不同，羅茨鼓風(fēng)機的風(fēng)量與轉速成嚴格的正比關(guān)系，而受壓力變化影響較小，這一特性使其在需要穩定風(fēng)量的工業(yè)場(chǎng)景中尤為珍貴。

　　Roots blower is a type of volumetric rotary fan, whose core working principle is based on the synchronous reverse rotation of two rotors to achieve forced gas delivery. Unlike ordinary centrifugal fans, Roots blowers have a strict proportional relationship between air volume and speed, and are less affected by pressure changes. This characteristic makes them particularly valuable in industrial scenarios that require stable air volume.

　　三葉型轉子的設計是現代羅茨鼓風(fēng)機的標準配置，相比傳統的二葉型設計，三葉型轉子每轉動(dòng)一次可完成3次吸、排氣過(guò)程，顯著(zhù)降低了氣體脈動(dòng)，使負荷變化更平緩，同時(shí)減少了機械振動(dòng)和噪聲。兩個(gè)完全相同的三葉型轉子平行安裝在橢圓形機箱內，通過(guò)一對精密同步齒輪的嚙合傳動(dòng)，確保兩個(gè)轉子在高速旋轉時(shí)始終保持正確的相位關(guān)系，既不會(huì )相互接觸碰撞，又能維持極小的恒定間隙。

　　The design of a three bladed rotor is a standard configuration for modern Roots blowers. Compared to the traditional two bladed design, the three bladed rotor can complete three suction and exhaust processes per rotation, significantly reducing gas pulsation, making load changes smoother, and reducing mechanical vibration and noise. Two identical three bladed rotors are installed in parallel inside an elliptical chassis, and are driven by a pair of precision synchronous gears to ensure that the two rotors maintain the correct phase relationship during high-speed rotation, without touching or colliding with each other, while maintaining a very small constant gap.

　　當電機驅動(dòng)主動(dòng)軸旋轉時(shí)，通過(guò)同步齒輪帶動(dòng)從動(dòng)軸作相反方向的旋轉。隨著(zhù)轉子的轉動(dòng)，在進(jìn)氣側形成由轉子、機殼和端蓋圍成的封閉腔室，外界氣體被吸入這些腔室。轉子繼續旋轉，將封閉的氣體沿機殼內壁無(wú)壓縮地推送至排氣側。當轉子突緣轉過(guò)排氣口邊緣的瞬間，排氣側的高壓氣體迅速回流至腔室，對氣體進(jìn)行瞬時(shí)加壓，完成強制排氣過(guò)程。

　　When the motor drives the driving shaft to rotate, it drives the driven shaft to rotate in the opposite direction through the synchronous gear. As the rotor rotates, a closed chamber surrounded by the rotor, casing, and end cover is formed on the intake side, and external gas is drawn into these chambers. The rotor continues to rotate, pushing the enclosed gas along the inner wall of the casing to the exhaust side without compression. At the moment when the rotor flange rotates past the edge of the exhaust port, the high-pressure gas on the exhaust side quickly flows back to the chamber, instantly pressurizing the gas and completing the forced exhaust process.

　　值得注意的是，羅茨鼓風(fēng)機本身并不壓縮氣體，其壓力的升高完全依賴(lài)于排氣口工作系統的背壓。這也是為什么羅茨鼓風(fēng)機嚴禁在完全關(guān)閉進(jìn)出口閥門(mén)的情況下啟動(dòng)或運行，否則會(huì )因壓力急劇升高而導致設備損壞。

　　It is worth noting that the Roots blower itself does not compress gas, and its pressure increase depends entirely on the back pressure of the exhaust working system. This is also why Roots blowers are strictly prohibited from starting or running with the inlet and outlet valves completely closed, otherwise equipment damage may occur due to a sharp increase in pressure.

　　羅茨鼓風(fēng)機的間隙控制是保證其高效運行的關(guān)鍵技術(shù)。這包括：轉子與機殼之間的徑向間隙（通常0.3-0.6mm）、轉子與端蓋之間的軸向間隙（定位端0.1-0.2mm，非定位端0.3-0.5mm）以及兩轉子之間的嚙合間隙（分葉間隙和合葉間隙）。這些間隙既保證了轉子自由旋轉不產(chǎn)生摩擦，又最大限度減少了氣體從高壓側向低壓側的內泄漏，確保輸送效率。

　　The gap control of Roots blower is a key technology to ensure its efficient operation. This includes the radial clearance between the rotor and the casing (usually 0.3-0.6mm), the axial clearance between the rotor and the end cover (0.1-0.2mm at the positioning end, 0.3-0.5mm at the non positioning end), and the meshing clearance between the two rotors (blade separation clearance and blade closure clearance). These gaps ensure that the rotor rotates freely without friction, while minimizing internal gas leakage from the high-pressure side to the low-pressure side, ensuring delivery efficiency.

　　二、羅茨鼓風(fēng)機的結構特點(diǎn)

　　2、 Structural characteristics of Roots blower

　　一臺標準的羅茨鼓風(fēng)機主要由驅動(dòng)機（電機或柴油機）和機頭兩大部分組成。機頭是羅茨鼓風(fēng)機的核心工作組件，其精密結構決定了設備的性能和使用壽命：

　　A standard Roots blower is mainly composed of two parts: the driver (motor or diesel engine) and the head. The machine head is the core working component of Roots blower, and its precise structure determines the performance and service life of the equipment:

　　轉子系統：通常由高強度鑄鐵或合金鋼制成，現代三葉轉子多采用漸開(kāi)線(xiàn)或外擺線(xiàn)的包絡(luò )線(xiàn)作為型線(xiàn)設計，確保運轉平穩。轉子與軸為整體結構，無(wú)磨損設計保證長(cháng)期使用性能不變。

　　Rotor system: Usually made of high-strength cast iron or alloy steel, modern three bladed rotors often use the envelope of involute or epitrochoid as the profile design to ensure smooth operation. The rotor and shaft are an integral structure, designed with no wear to ensure long-term performance.

　　同步齒輪：高精度齒輪副確保兩轉子始終保持正確相位，齒輪通常采用優(yōu)質(zhì)合金鋼經(jīng)滲碳淬火處理，具有極高的耐磨性和抗疲勞強度。

　　Synchronous gear: High precision gear pairs ensure that the two rotors always maintain the correct phase. The gears are usually made of high-quality alloy steel that has undergone carburizing and quenching treatment, and have extremely high wear resistance and fatigue strength.

　　密封系統：包括軸端密封和墻板密封，防止潤滑油泄漏和外界雜質(zhì)進(jìn)入。高端機型采用進(jìn)口氟橡膠油封，耐高溫、耐磨且使用壽命長(cháng)。

　　Sealing system: including shaft end sealing and wall panel sealing, to prevent lubricating oil leakage and external impurities from entering. High end models use imported fluororubber oil seals, which are heat-resistant, wear-resistant, and have a long service life.

　　潤滑系統：軸承和齒輪采用飛濺潤滑或強制潤滑方式，潤滑油一般選用220#中負荷齒輪油（夏季40#，冬季20#機械油）。

　　Lubrication system: The bearings and gears adopt splash lubrication or forced lubrication methods, and the lubricating oil is generally 220 # medium load gear oil (40 # in summer and 20 # in winter mechanical oil).

　　殼體組件：包括機殼和兩側墻板，形成封閉的工作腔室。殼體上的進(jìn)氣口和出氣口通常呈對角線(xiàn)布置，便于氣體流動(dòng)。

　　Shell components: including the casing and two side wall panels, forming a closed working chamber. The air inlet and outlet on the shell are usually arranged diagonally to facilitate gas flow.

　　羅茨鼓風(fēng)機的性能優(yōu)勢主要體現在：強制輸氣特性使流量穩定不受壓力變化影響；結構簡(jiǎn)單緊湊，維護方便；無(wú)需內部潤滑，輸送氣體不受油污染；轉速高，體積小，便于系統集成；機種齊全，能夠滿(mǎn)足不同壓力和流量需求。

　　The performance advantages of Roots blower are mainly reflected in its forced gas transmission characteristics, which ensure stable flow without being affected by pressure changes; Simple and compact structure, easy to maintain; No internal lubrication is required, and the transported gas is not contaminated by oil; High speed, small size, easy system integration; The models are complete and can meet different pressure and flow requirements.

　　三、操作規程

　　3、 Operating procedures

　　規范的操作流程是確保羅茨鼓風(fēng)機安全運行和延長(cháng)使用壽命的前提條件。操作人員必須經(jīng)過(guò)專(zhuān)業(yè)培訓并取得操作證方可上崗，同時(shí)要嚴格遵守安全管理和交接班制度。

　　A standardized operating procedure is a prerequisite for ensuring the safe operation and extending the service life of Roots blowers. Operators must undergo professional training and obtain operating certificates before they can take up their posts, and must strictly comply with safety management and shift handover systems.

　　1、啟動(dòng)前的準備啟動(dòng)前的檢查工作至關(guān)重要，主要包括以下幾個(gè)方面：

　　1. The preparation before startup and the inspection work before startup are crucial, mainly including the following aspects:

　?、匐姎庀到y檢查：確認電源電壓波動(dòng)在380V±10%范圍內，頻率符合標牌要求；檢查電機接地線(xiàn)完好，電氣裝置狀態(tài)良好；觀(guān)察各儀表（電流表、電壓表、壓力表等）是否正常，若有異常應及時(shí)通知維修人員更換。

　?、?Electrical system inspection: Confirm that the power supply voltage fluctuation is within the range of 380V ± 10% and the frequency meets the requirements of the label; Check that the motor grounding wire is intact and the electrical device is in good condition; Observe whether each instrument (ammeter, voltmeter, pressure gauge, etc.) is normal. If there is any abnormality, notify the maintenance personnel to replace it in a timely manner.

　?、跈C械狀態(tài)確認：手動(dòng)盤(pán)車(chē)2-3圈，檢查轉子轉動(dòng)是否靈活，有無(wú)卡澀或異常聲響；檢查所有連接螺栓（地腳螺栓、聯(lián)軸器螺栓等）和定位銷(xiāo)是否緊固；確認對輪罩或皮帶防護罩安裝到位，防止機械傷害。

　?、?Mechanical status confirmation: Manually rotate the rotor 2-3 times to check if it rotates smoothly and if there is any jamming or abnormal noise; Check whether all connecting bolts (foundation bolts, coupling bolts, etc.) and locating pins are tightened; Confirm that the wheel cover or belt guard is installed properly to prevent mechanical injury.

　?、蹪櫥到y準備：檢查油箱油位應在油標中心位置（油窗中央），油質(zhì)清潔無(wú)雜質(zhì)；軸承潤滑脂應充足，一般采用不銹鋼基潤滑脂或二硫化鉬潤滑脂；對于水冷式軸承座，需先打開(kāi)冷卻水閥門(mén)，確認水流暢通。

　?、?Lubrication system preparation: Check that the oil level in the oil tank is at the center of the oil gauge (center of the oil window), and that the oil quality is clean and free of impurities; The bearing grease should be sufficient, generally using stainless steel based grease or molybdenum disulfide grease; For water-cooled bearing seats, it is necessary to first open the cooling water valve and confirm that the water flow is unobstructed.

　?、芄苈烽y門(mén)調整：完全打開(kāi)進(jìn)氣調節閥和排氣閥，確保無(wú)負荷啟動(dòng)；檢查旁通管路是否暢通；清潔或更換進(jìn)氣過(guò)濾器濾網(wǎng)，防止堵塞；確認系統管道無(wú)焊渣等異物殘留。

　?、?Pipeline valve adjustment: Fully open the intake control valve and exhaust valve to ensure no-load start-up; Check if the bypass pipeline is unobstructed; Clean or replace the intake filter mesh to prevent blockage; Confirm that there are no welding slag or other foreign objects remaining in the system pipeline.

　?、莪h(huán)境安全檢查：清除風(fēng)機周?chē)恼系K物和雜物，確保操作空間充足；檢查地基是否牢固，設備安裝是否平穩；室外安裝時(shí)應設置防雨棚，防止電機受潮。

　?、?Environmental safety inspection: Remove obstacles and debris around the fan to ensure sufficient operating space; Check whether the foundation is firm and whether the equipment installation is stable; When installing outdoors, a rain shelter should be set up to prevent the motor from getting damp.

　　特別需要注意的是，羅茨鼓風(fēng)機嚴禁帶壓?jiǎn)?dòng)，每次啟動(dòng)前必須確保放空閥完全打開(kāi)，出口閥門(mén)處于開(kāi)啟狀態(tài)。這是避免電機過(guò)載和設備損壞的基本要求。

　　It is particularly important to note that the Roots blower must not be started under pressure. Before each start, it is necessary to ensure that the vent valve is fully opened and the outlet valve is in the open state. This is a basic requirement to avoid motor overload and equipment damage.

　　2、啟動(dòng)與運行監控

　　2. Startup and operation monitoring

　　完成啟動(dòng)前檢查并確認一切正常后，方可進(jìn)入啟動(dòng)程序

　　After completing the pre startup check and confirming that everything is normal, you can enter the startup program

　?、倏蛰d啟動(dòng)：按下啟動(dòng)按鈕，讓風(fēng)機在無(wú)負荷狀態(tài)下運行。觀(guān)察電機啟動(dòng)電流和風(fēng)機加速過(guò)程是否平穩。新安裝或大修后的風(fēng)機應進(jìn)行至少30分鐘的空載試運行。

　?、?No load start: Press the start button to let the fan run in a no-load state. Observe whether the starting current of the motor and the acceleration process of the fan are stable. Newly installed or overhauled fans should undergo a no-load test run for at least 30 minutes.

　?、谥鸩郊虞d：待風(fēng)機達到額定轉速且運行平穩后，緩慢調節出口閥門(mén)（或逐漸關(guān)閉放空閥），使壓力逐步升高至工作壓力。這一過(guò)程應緩慢進(jìn)行，避免壓力突變對系統和風(fēng)機造成沖擊。

　?、?Gradual loading: After the fan reaches the rated speed and runs smoothly, slowly adjust the outlet valve (or gradually close the vent valve) to gradually increase the pressure to the working pressure. This process should be carried out slowly to avoid sudden pressure changes that may cause impact on the system and fan.

　?、蹍嫡{整：根據工藝要求，通過(guò)旁路閥或變頻器調整風(fēng)量和壓力。注意羅茨鼓風(fēng)機的流量不能通過(guò)開(kāi)關(guān)閥門(mén)來(lái)調節，否則會(huì )導致超壓危險。短時(shí)間需較少流量時(shí)，應使用旁路調節裝置。

　?、?Parameter adjustment: Adjust the air volume and pressure through bypass valves or frequency converters according to process requirements. Note that the flow rate of the Roots blower cannot be adjusted by opening or closing the valve, otherwise it may cause overpressure hazards. When less flow is required in a short period of time, a bypass regulating device should be used.

　　風(fēng)機進(jìn)入正常運行后，操作人員需進(jìn)行定期巡檢和監控，主要內容包括：

　　After the fan enters normal operation, the operator needs to conduct regular inspections and monitoring, including:

　?、僬駝?dòng)與噪聲：用測振儀檢查風(fēng)機各部位振動(dòng)速度，軸承部位徑向振動(dòng)速度不應超過(guò)6.3mm/s；監聽(tīng)運轉聲音是否均勻平穩，出現異常響聲應立即停機檢查。

　?、?Vibration and noise: Use a vibration meter to check the vibration velocity of each part of the fan, and the radial vibration velocity of the bearing part should not exceed 6.3mm/s; Monitor whether the running sound is uniform and stable. If there is any abnormal noise, stop the machine immediately for inspection.

　?、跍囟缺O測：軸承溫度應低于95℃，溫升不超過(guò)40℃；潤滑油溫度不高于65℃；齒輪箱溫度在允許范圍內。若溫度異常升高，應檢查潤滑和冷卻系統。

　?、?Temperature monitoring: The bearing temperature should be below 95 ℃, and the temperature rise should not exceed 40 ℃; Lubricating oil temperature shall not exceed 65 ℃; The gearbox temperature is within the allowable range. If the temperature rises abnormally, the lubrication and cooling systems should be checked.

　?、蹓毫εc流量：定期記錄進(jìn)出口壓力值，確保在銘牌標定范圍內；觀(guān)察流量是否滿(mǎn)足工藝要求，發(fā)現不足時(shí)應檢查過(guò)濾器和管道系統。

　?、?Pressure and flow: Regularly record the inlet and outlet pressure values to ensure they are within the calibration range indicated on the nameplate; Observe whether the flow rate meets the process requirements, and check the filter and pipeline system if any deficiencies are found.

　?、茈姎鈪担罕O控電機電流和電壓，電流過(guò)高可能是超載或機械故障的信號；三相電流應平衡，偏差不超過(guò)10%。

　?、?Electrical parameters: Monitor motor current and voltage, high current may be a signal of overload or mechanical failure; The three-phase current should be balanced with a deviation not exceeding 10%.

　?、轁櫥瑺顩r：每小時(shí)檢查油位一次，確保在油標線(xiàn)范圍內；觀(guān)察油質(zhì)變化，發(fā)現乳化或雜質(zhì)增多應及時(shí)更換；定期向軸承補充潤滑脂。

　?、?Lubrication condition: Check the oil level once every hour to ensure it is within the oil mark range; Observe changes in oil quality and replace it promptly if emulsification or impurities increase; Regularly replenish lubricating grease to the bearings.

　　在運行過(guò)程中，若發(fā)現異常情況如劇烈振動(dòng)、異常噪音、溫度驟升、電流過(guò)大等，應立即按下緊急停機按鈕，打開(kāi)放空閥卸壓，然后查明原因并排除故障。嚴禁在運轉狀態(tài)下對風(fēng)機進(jìn)行維修作業(yè)。

　　During operation, if abnormal conditions such as severe vibration, abnormal noise, sudden temperature rise, excessive current, etc. are found, the emergency stop button should be immediately pressed, the vent valve should be opened to relieve pressure, and then the cause should be identified and the fault eliminated. It is strictly prohibited to perform maintenance operations on the fan while it is in operation.

　　3、正常停機與維護

　　3. Normal shutdown and maintenance

　　規范的停機程序對保護羅茨鼓風(fēng)機同樣重要，不當的停機操作可能導致設備損壞：

　　Standardized shutdown procedures are equally important for protecting Roots blowers, as improper shutdown operations may result in equipment damage:

　?、俟に嚱递d：逐步打開(kāi)放空閥，同時(shí)關(guān)小出口閥門(mén)，將系統壓力降至最低。

　?、?Process load reduction: Gradually open the vent valve and close the outlet valve to minimize the system pressure.

　?、谇袛嚯娫矗捍龎毫ν耆冻?，按下停止按鈕使風(fēng)機停機。注意記錄停機時(shí)的電壓、電流、風(fēng)壓等數據，供后續分析參考。

　?、?Cut off power: After the pressure is completely relieved, press the stop button to stop the fan. Pay attention to recording the voltage, current, wind pressure, and other data during shutdown for future analysis and reference.

　?、酆罄m處理：關(guān)閉出風(fēng)閥和冷卻水閥門(mén)（如有）；檢查并清掃設備表面，保持清潔；將各操作開(kāi)關(guān)置于空檔位置。

　?、?Follow up processing: Close the air outlet valve and cooling water valve (if any); Check and clean the surface of the equipment to maintain cleanliness; Place all operation switches in neutral position.

　　四、日常維護保養

　　4、 Daily maintenance and upkeep

　　日常維護保養是保證羅茨鼓風(fēng)機長(cháng)期穩定運行的關(guān)鍵，主要包括以下內容：

　　Daily maintenance is the key to ensuring the long-term stable operation of Roots blowers, mainly including the following:

　　1、每日保養：檢查潤滑部位油位和質(zhì)量；清潔設備表面；緊固可能松動(dòng)的螺栓；檢查皮帶張緊度（如為皮帶傳動(dòng)）。

　　1. Daily maintenance: Check the oil level and quality of lubrication parts; Clean the surface of the equipment; Tighten bolts that may become loose; Check the tension of the belt (if it is a belt drive).

　　2、每月維護：卸掉軸承側蓋及軸承座上的沉頭螺釘，補充2號鈣鈉基潤滑油；檢查齒輪嚙合情況和齒輪油狀態(tài)；清潔空氣過(guò)濾器濾芯。

　　2. Monthly maintenance: Remove the countersunk screws on the bearing side cover and bearing seat, and replenish the No. 2 calcium sodium based lubricating oil; Check the gear meshing and gear oil condition; Clean the air filter element.

　　3、季度保養：徹底更換潤滑油；清洗軸承箱并檢查軸承磨損情況；檢查調整轉子各部位間隙；清理風(fēng)機及氣體輸送管道內部的灰塵和污垢。

　　3. Quarterly maintenance: Thoroughly replace lubricating oil; Clean the bearing box and check the wear of the bearings; Check and adjust the clearances between various parts of the rotor; Clean the dust and dirt inside the fan and gas delivery pipeline.

　　4、年度大修：全面解體檢查，測量葉輪間隙并調整；檢查齒輪磨損和嚙合狀況，必要時(shí)更換；校驗安全閥和壓力表；檢查電機絕緣狀況。

　　4. Annual overhaul: comprehensive disassembly inspection, measurement of impeller clearance and adjustment; Check the wear and meshing condition of the gears, and replace them if necessary; Verify safety valves and pressure gauges; Check the insulation condition of the motor.

　　對于備用風(fēng)機，應定期進(jìn)行切換運行（建議每隔24小時(shí)切換一次），避免長(cháng)期單臺運行導致設備疲勞，同時(shí)也確保備用設備處于良好狀態(tài)。每次檢修后應進(jìn)行試運轉，時(shí)間不少于30分鐘，確認無(wú)異常后方可投入正式使用。

　　For backup fans, they should be switched and operated regularly (it is recommended to switch every 24 hours) to avoid equipment fatigue caused by long-term single unit operation, while also ensuring that the backup equipment is in good condition. After each maintenance, a trial run should be conducted for no less than 30 minutes to confirm that there are no abnormalities before it can be put into formal use.

　　五、常見(jiàn)故障

　　5、 Common faults

　　1、機械類(lèi)故障及處理

　　1. Mechanical faults and their handling

　　羅茨鼓風(fēng)機在長(cháng)期運行過(guò)程中可能出現各種故障，及時(shí)識別和處理這些故障對保障生產(chǎn)安全至關(guān)重要。以下是常見(jiàn)的機械類(lèi)故障及其解決方法：

　　The Roots blower may experience various faults during long-term operation, and timely identification and handling of these faults is crucial for ensuring production safety. The following are common mechanical faults and their solutions:

　?、偃~輪摩擦故障

　?、?Friction fault of impeller

　　●葉輪與葉輪摩擦：通常由葉輪污染（清除雜質(zhì)）、齒輪磨損（調整或更換齒輪，保證側隙在平均值的30%~50%以?xún)龋?、齒輪固定不牢（重新裝配，確保錐度配合接觸面積達75%）或軸承磨損游隙增大（更換軸承）引起?！袢~輪與墻板/機殼摩擦：主要原因包括安裝間隙不正確（重新調整間隙）、運轉壓力過(guò)高（排查超載原因，降壓至規定值）、運轉溫度過(guò)高（檢查安裝精度，減少管道拉力）、機殼變形（修復或更換）以及軸承軸向定位不佳（檢查修復軸承，保證游隙）。

　　Impeller to impeller friction: usually caused by impeller contamination (removing impurities), gear wear (adjusting or replacing gears to ensure that the backlash is within 30%~50% of the average value), loose gear fixation (reassembling to ensure that the taper fit contact area reaches 75%), or increased bearing wear and clearance (replacing bearings). Friction between impeller and wall panel/casing: The main reasons include incorrect installation clearance (readjust clearance), high operating pressure (investigate overload cause, reduce pressure to the specified value), high operating temperature (check installation accuracy, reduce pipeline tension), casing deformation (repair or replace), and poor axial positioning of bearings (check and repair bearings to ensure clearance).

　?、? 軸承故障

　?、? bearing failure

　　?軸承發(fā)熱或損壞多因潤滑不良（檢查油質(zhì)油量）、皮帶過(guò)緊（調整張力）或裝配不當所致。表現為溫度升高、振動(dòng)加大，嚴重時(shí)軸承座發(fā)熱變形。需更換軸承并檢查軸承座磨損情況，輕微變形可打磨修復，嚴重變形或裂紋需更換側蓋板。

　　Bearing heating or damage is often caused by poor lubrication (checking oil quality and quantity), belt tightness (adjusting tension), or improper assembly. Manifested as temperature rise, increased vibration, and in severe cases, bearing seat heating and deformation. The bearing needs to be replaced and the wear of the bearing seat checked. Minor deformations can be repaired by grinding, while severe deformations or cracks require replacement of the side cover plate.

　?、埤X輪磨損

　?、?Gear wear

　　齒輪側隙增大會(huì )導致轉子相位變化，使合葉間隙減小、分葉間隙增大，引發(fā)轉子碰撞。檢查齒側間隙（標準0.10~0.18mm），用紅丹粉檢查嚙合接觸面積（齒高方向≥50%，齒寬方向≥70%），不符合要求時(shí)應更換齒輪。

　　An increase in gear backlash can cause a change in rotor phase, resulting in a decrease in blade clearance and an increase in blade clearance, leading to rotor collision. Check the tooth flank clearance (standard 0.10-0.18mm), use red lead powder to check the meshing contact area (tooth height direction ≥ 50%, tooth width direction ≥ 70%), and replace the gear if it does not meet the requirements.

　?、苻D子卡澀

　?、?Rotor jamming

　　長(cháng)期停機后易出現，原因包括：轉子間隙不當（調整分葉、合葉間隙，分葉間隙≥0.15mm，合葉間隙為分葉的2倍）、異物進(jìn)入（清除雜物）、軸向竄量過(guò)大（調整端隙，定位端0.1~0.2mm，非定位端0.3~0.5mm）。

　　After long-term shutdown, it is easy to occur due to improper rotor clearance (adjusting the clearance between the dividing and closing blades, with the clearance between the dividing blades ≥ 0.15mm and the clearance between the closing blades being twice that of the dividing blades), foreign objects entering (removing debris), and excessive axial displacement (adjusting the end clearance, positioning end 0.1-0.2mm, non positioning end 0.3-0.5mm).

　?、菡駝?dòng)異常

　?、?Abnormal vibration

　　可能由轉子不平衡（清除葉輪附著(zhù)物或重新做動(dòng)平衡）、聯(lián)軸器不對中（重新校正）、地腳螺栓松動(dòng)（緊固）、軸承損壞（更換）或管道應力（調整管路支撐）引起。劇烈振動(dòng)時(shí)應立即停機檢查。

　　Possible causes include rotor imbalance (removal of impeller attachments or re balancing), misalignment of couplings (recalibration), loose anchor bolts (tightening), damaged bearings (replacement), or pipeline stress (adjustment of pipeline support). When there is severe vibration, the machine should be stopped immediately for inspection.

　　處理機械故障時(shí)，必須先停機泄壓，切斷電源并掛上警示牌，待風(fēng)機完全冷卻后再進(jìn)行檢修工作。尤其要注意轉子間隙的調整，這是羅茨鼓風(fēng)機檢修的關(guān)鍵技術(shù)點(diǎn)，直接影響設備性能和使用壽命。

　　When dealing with mechanical failures, it is necessary to first stop the machine to relieve pressure, cut off the power supply, and hang a warning sign. After the fan has completely cooled down, maintenance work can be carried out. Special attention should be paid to adjusting the rotor clearance, which is a key technical point in the maintenance of Roots blowers and directly affects equipment performance and service life.

　　2、性能類(lèi)故障及處理

　　2. Performance related faults and their handling

　　除了機械故障外，羅茨鼓風(fēng)機在運行過(guò)程中還可能遇到各種性能類(lèi)故障，影響其正常工作效能：

　　In addition to mechanical failures, Roots blowers may also encounter various performance related faults during operation, which can affect their normal working efficiency

　?、亠L(fēng)量不足

　?、?Insufficient air volume

　　可能原因：進(jìn)口過(guò)濾器堵塞（清除或更換濾芯）；葉輪磨損間隙過(guò)大（修復或更換葉輪）；皮帶打滑（調整張力或增加皮帶根數）；進(jìn)口壓力損失大（調整進(jìn)口壓力至規定值）；管道泄漏（檢查并修復漏點(diǎn)）。

　　Possible reasons: blockage of the imported filter (removal or replacement of the filter element); Excessive clearance due to impeller wear (repair or replace impeller); Belt slippage (adjust tension or increase the number of belts); Large import pressure loss (adjust the import pressure to the specified value); Pipeline leakage (check and repair the leakage point).

　　處理措施：定期維護空氣過(guò)濾器；檢查轉子磨損情況，及時(shí)維修；調整皮帶張力或更換磨損皮帶；檢查進(jìn)氣系統是否通暢；用肥皂水檢測管道泄漏點(diǎn)。

　　Solution: Regularly maintain the air filter; Check the wear of the rotor and repair it in a timely manner; Adjust belt tension or replace worn belts; Check if the intake system is unobstructed; Use soapy water to detect pipeline leaks.

　?、?溫度過(guò)高

　?、?The temperature is too high

　　?可能原因：油箱油量過(guò)多、過(guò)稠或臟污（調整油位或更換合適潤滑油）；過(guò)濾器或消聲器堵塞（清除堵塞物）；系統壓力超過(guò)規定值（通過(guò)旁路降低壓差）；葉輪磨損間隙大（修復間隙）；通風(fēng)不良（增設通風(fēng)設施）；轉速過(guò)低皮帶打滑（調整轉速或皮帶張力）。

　　Possible reasons: excessive, thick or dirty oil in the fuel tank (adjust the oil level or replace with suitable lubricating oil); Filter or muffler blockage (remove blockage); The system pressure exceeds the specified value (by reducing the pressure difference through a bypass); Large impeller wear clearance (repair clearance); Poor ventilation (adding ventilation facilities); The belt slips when the speed is too low (adjust the speed or belt tension).

　　特別提醒：羅茨鼓風(fēng)機在環(huán)境溫度超過(guò)40℃時(shí)應采取降溫措施，如增加排氣扇或搭建遮陽(yáng)棚，否則會(huì )顯著(zhù)縮短設備壽命。

　　Special reminder: Roots blowers should take cooling measures when the ambient temperature exceeds 40 ℃, such as adding exhaust fans or building sunshades, otherwise it will significantly shorten the equipment life.

　?、垭娏鳟惓?/p>

　?、?Abnormal current

　　●電流過(guò)大：可能因電壓過(guò)低（暫停運行或更換大功率電機）；過(guò)濾器/管路堵塞（清除堵塞）；內部摩擦（檢查并調整間隙）；超載運行（調整至額定負載）；電機故障（檢修或更換電機）。

　　Excessive current: may be due to low voltage (pause operation or replace high-power motor); Filter/pipeline blockage (clear blockage); Internal friction (check and adjust clearance); Overload operation (adjusted to rated load); Motor malfunction (repair or replace motor).

　　●電流波動(dòng)：通常反映負載不穩定，應檢查系統壓力變化和閥門(mén)狀態(tài)；三相電流不平衡可能是電源問(wèn)題或電機繞組故障。

　　Current fluctuation: usually reflects unstable load, and system pressure changes and valve status should be checked; Three phase current imbalance may be due to power supply issues or motor winding faults.

　?、苈┯蛦?wèn)題

　?、?Oil leakage issue

　　主要表現：油箱油位過(guò)高由排油口漏出（降低油位至標準線(xiàn)）；軸端密封磨損（更換油封，推薦使用氟橡膠材質(zhì)）；中間腔壓力過(guò)高（疏通通風(fēng)口，安裝2mm孔徑的旋塞）。

　　Main manifestations: The oil level in the fuel tank is too high and leaks out through the oil discharge port (lowering the oil level to the standard line); Wear of shaft end seal (replace oil seal, recommend using fluororubber material); The pressure in the middle chamber is too high (clear the ventilation opening and install a 2mm hole plug).

　　預防措施：定期檢查油封狀態(tài)；保持呼吸閥暢通；避免超壓運行；使用合適的潤滑油，不得混用不同牌號油品。

　　Preventive measures: Regularly check the condition of the oil seal; Keep the breathing valve unobstructed; Avoid overpressure operation; Use appropriate lubricating oil and do not mix different grades of oil.

　?、莓惓Ｔ胍?/p>

　?、?Abnormal noise

　　●金屬碰撞聲：可能轉子摩擦或齒輪損壞（立即停機檢查間隙和齒輪狀態(tài)）。

　　Metal collision sound: Possible rotor friction or gear damage (stop immediately to check clearance and gear condition).

　　●周期性敲擊聲：通常為軸承損壞或轉子不平衡（檢查更換軸承或做動(dòng)平衡）。

　　Periodic knocking sound: usually caused by bearing damage or rotor imbalance (check and replace bearings or perform dynamic balancing).

　　●氣流嘯叫聲：反映系統阻力過(guò)大或閥門(mén)開(kāi)度不當（檢查管道系統和閥門(mén)）。

　　Airflow whistling sound: reflects excessive system resistance or improper valve opening (check pipeline system and valves).

　　對于性能類(lèi)故障，操作人員應結合多種參數變化綜合判斷，如同時(shí)監測壓力、溫度、電流和振動(dòng)情況，可以更準確地定位故障源。建立運行記錄制度，定期記錄各項參數，有助于及時(shí)發(fā)現潛在問(wèn)題并預測設備狀態(tài)。

　　For performance related faults, operators should make comprehensive judgments based on multiple parameter changes, such as monitoring pressure, temperature, current, and vibration simultaneously, which can more accurately locate the fault source. Establishing an operation record system and regularly recording various parameters can help identify potential problems in a timely manner and predict equipment status.

　　六、安全操作特別注意事項

　　6、 Special precautions for safe operation

　　為確保羅茨鼓風(fēng)機的安全運行，避免人身傷害和設備事故，操作和維護人員必須嚴格遵守以下安全規范：

　　To ensure the safe operation of Roots blowers, avoid personal injury and equipment accidents, operators and maintenance personnel must strictly comply with the following safety regulations:

　　1. 禁止操作事項

　　1. Prohibited operations

　　●嚴禁在完全關(guān)閉進(jìn)出口閥門(mén)的情況下啟動(dòng)或運行風(fēng)機，這會(huì )導致壓力急劇升高引發(fā)爆炸危險。

　　It is strictly prohibited to start or operate the fan with the inlet and outlet valves completely closed, as this can cause a sudden increase in pressure and pose a risk of explosion.

　　●禁止拆除或繞過(guò)安全防護裝置（如聯(lián)軸器護罩、皮帶防護罩等）運行設備，防止機械傷害。

　　It is prohibited to dismantle or bypass safety protection devices (such as coupling guards, belt guards, etc.) when operating equipment to prevent mechanical injury.

　　●不得使用不合格或牌號不符的潤滑油，不同油品禁止混用，避免潤滑失效。

　　Do not use lubricating oil that is unqualified or does not match the brand. Mixing different oils is prohibited to avoid lubrication failure.

　　●禁止在風(fēng)機運行中進(jìn)行維修作業(yè)，必須停機、斷電、泄壓并掛警示牌后方可檢修。

　　Maintenance work is prohibited during the operation of the fan. It must be stopped, powered off, depressurized, and a warning sign must be hung before maintenance can be carried out.

　　2. 危險預防措施

　　2. Hazard prevention measures

　　●電氣安全：檢查電機接地良好；濕手不得操作電氣開(kāi)關(guān)；定期檢查電纜絕緣狀況。

　　Electrical safety: Check that the motor is well grounded; Do not operate electrical switches with wet hands; Regularly check the insulation condition of cables.

　　●高溫防護：運行中軸承和殼體溫度可能很高，避免直接接觸，停機后應等待充分冷卻再進(jìn)行維護。

　　High temperature protection: During operation, the temperature of the bearings and housing may be very high. Avoid direct contact and wait for sufficient cooling before maintenance after shutdown.

　　●噪聲防護：高噪聲環(huán)境下應佩戴耳塞或耳罩，長(cháng)期暴露可能造成聽(tīng)力損傷。

　　Noise protection: Earplugs or earmuffs should be worn in high noise environments, as long-term exposure may cause hearing damage.

　　●氣體安全：輸送易燃或有毒氣體時(shí)，確保工作區域通風(fēng)良好，配備氣體檢測儀和防護裝備。

　　Gas safety: When transporting flammable or toxic gases, ensure good ventilation in the work area and equip it with gas detectors and protective equipment.

　　3. 特殊工況處理

　　3. Handling of special working conditions

　　●長(cháng)時(shí)間停機后的啟動(dòng)：應手動(dòng)盤(pán)車(chē)數圈，檢查轉子是否靈活；初次啟動(dòng)建議先空載運行1小時(shí)以上，觀(guān)察無(wú)異常再加載。

　　● Start up after long-term shutdown: Manually rotate the rotor several times to check if it is flexible; It is recommended to run without load for more than 1 hour before starting for the first time, and observe that there are no abnormalities before loading.

　　●冬季運行：環(huán)境溫度低于5℃時(shí)，選用低溫潤滑油；水冷機型停機后應排凈冷卻水，防止凍裂。

　　Winter operation: When the ambient temperature is below 5 ℃, use low-temperature lubricating oil; After the water-cooled machine is shut down, the cooling water should be drained to prevent freezing and cracking.

　　●輸送腐蝕性氣體：應選用特殊材質(zhì)（如不銹鋼）風(fēng)機，并縮短維護周期，特別注意檢查轉子腐蝕情況。

　　Transporting corrosive gases: Special materials (such as stainless steel) should be used for fans, and maintenance cycles should be shortened. Special attention should be paid to checking the corrosion of the rotor.

　　4. 應急處理程序

　　4. Emergency response procedures

　　發(fā)現下列情況應立即緊急停機：異常劇烈振動(dòng)或撞擊聲；軸承溫度超過(guò)95℃；電機冒煙或電流異常飆升；管道破裂或氣體大量泄漏。

　　Immediate emergency shutdown should be carried out upon discovering the following situations: abnormal severe vibration or impact sound; The bearing temperature exceeds 95 ℃; Motor smoking or abnormal surge in current; Pipeline rupture or significant gas leakage.

　　停機步驟：迅速打開(kāi)放空閥泄壓→按下急停按鈕→關(guān)閉出口閥門(mén)→報告上級并記錄事件詳情。

　　Shutdown steps: Quickly open the vent valve to release pressure → Press the emergency stop button → Close the outlet valve → Report to the superior and record the details of the event.

　　●火災處理：切斷電源，使用二氧化碳滅火器撲救，禁止用水撲滅電氣火災。

　　Fire treatment: Cut off the power supply, use carbon dioxide fire extinguishers to extinguish fires, and prohibit using water to extinguish electrical fires.

　　企業(yè)應定期組織安全培訓，使操作人員充分了解羅茨鼓風(fēng)機的危險性和防護措施。新員工必須在有經(jīng)驗人員指導下操作設備，未經(jīng)考核合格不得獨立上崗。同時(shí)，建議在設備明顯位置張貼安全操作規程和緊急聯(lián)系人信息，提高應急響應效率。

　　Enterprises should regularly organize safety training to ensure that operators fully understand the hazards and protective measures of Roots blowers. New employees must operate equipment under the guidance of experienced personnel and are not allowed to work independently without passing the assessment. At the same time, it is recommended to post safety operating procedures and emergency contact information in prominent locations on the equipment to improve emergency response efficiency.