相信干水處理的人應該沒有不熟悉羅茨風機的，它是容積式壓縮機的一種，屬于旋轉(zhuǎn)式機械。

　　Those who believe in dry water treatment should not be unfamiliar with Roots blowers, which are a type of positive displacement compressor and belong to rotary machinery.

　　羅茨風機在現(xiàn)實的工作環(huán)境中，十分容易被周圍的環(huán)境所影響，進而產(chǎn)生故障。所以對羅茨風機進行故障的分析及處理就顯得十分重要，因此，在查閱無數(shù)資料、和數(shù)十個朋友交流以后，小編給大家總結(jié)了羅茨風機常見的故障原因和解決方法。

　　Roots blowers are easily affected by the surrounding environment in real working environments, leading to malfunctions. So it is very important to analyze and handle the faults of Roots blowers. Therefore, after consulting countless materials and communicating with dozens of friends, the editor has summarized the common causes and solutions of Roots blowers.

　　1羅茨風機工作原理

　　Working principle of Roots blower

　　羅茨風機是一種容積型回轉(zhuǎn)式氣體動力機械，有2個腰形漸開線轉(zhuǎn)子，通過主、從動軸齒輪使兩轉(zhuǎn)子作等速反向旋轉(zhuǎn)，完成吸氣排氣過程。

　　Roots blower is a type of volumetric rotary gas powered machinery with two waist shaped involute rotors. The two rotors rotate in opposite directions at a constant speed through the main and driven shaft gears, completing the process of suction and exhaust.

　　如圖所示，當左側(cè)轉(zhuǎn)子順時轉(zhuǎn)動時，右側(cè)轉(zhuǎn)子作逆時針轉(zhuǎn)動，氣體從進口吸入，隨著旋轉(zhuǎn)時所形成的工作室移動，最后從上面的出口排出。

　　As shown in the figure, when the left rotor rotates clockwise, the right rotor rotates counterclockwise, and gas is sucked in from the inlet. It moves with the working chamber formed during rotation and is finally discharged from the outlet above.

　　兩轉(zhuǎn)子相互之間、兩轉(zhuǎn)子與機殼及側(cè)蓋板之間，既要保證相互不發(fā)生碰撞，又要保證不因間隙過大影響效率。兩轉(zhuǎn)子運轉(zhuǎn)中始終保持微小間隙，使排出的氣體盡量不返回進氣室。

　　It is necessary to ensure that there is no collision between the two rotors, and between the two rotors and the casing and side cover plate, while also ensuring that the efficiency is not affected by excessive clearance. Maintain a small gap between the two rotors during operation to minimize the return of exhaust gas to the intake chamber.

　　其特點為輸出的風量與回轉(zhuǎn)數(shù)成正比，當風機出口壓力變化時，輸送的風量并沒有顯著變化。羅茨風機本身不能壓縮氣體，壓力的升高依賴排氣口工作系統(tǒng)的背壓。

　　Its characteristic is that the output air volume is proportional to the number of revolutions, and when the outlet pressure of the fan changes, the delivered air volume does not change significantly. The Roots blower itself cannot compress gas, and the increase in pressure depends on the back pressure of the exhaust working system.

　　2羅茨風機故障現(xiàn)象

　　Fault phenomenon of Roots blower 2

　　經(jīng)過多次檢修總結(jié)以及和水友的交流，造成機組故障的原因主要包括斷軸、軸承損壞、機組振動大、轉(zhuǎn)子卡死、軸封泄漏等，而造成檢修頻次增加的主要故障是轉(zhuǎn)子卡澀與摩擦。

　　After multiple maintenance summaries and communication with water friends, the main causes of unit failures include shaft breakage, bearing damage, high unit vibration, rotor jamming, and shaft seal leakage. The main faults that increase maintenance frequency are rotor jamming and friction.

　　3羅茨風機故障原因分析

　　Analysis of the causes of faults in Roots blower 3

　　轉(zhuǎn)子與殼體或轉(zhuǎn)子間摩擦是羅茨風機常見故障，若在運行中出現(xiàn)此故障，將會伴隨著嚴重的振動與噪聲。羅茨風機經(jīng)過長時間停機后，經(jīng)常出現(xiàn)轉(zhuǎn)子卡澀的現(xiàn)象，小編這里把故障的主要原因歸納為以下幾類。

　　Friction between rotor and shell or rotor is a common fault of Roots blower. If this fault occurs during operation, it will be accompanied by severe vibration and noise. After a long period of shutdown, the Roots blower often experiences rotor jamming. Here, the main causes of the malfunction are summarized as follows.

　　轉(zhuǎn)子分葉、合葉間隙不合適

　　Inappropriate clearance between rotor blades and blades

　　轉(zhuǎn)子的分葉、合葉間隙不合適，運行中分葉、合葉間隙發(fā)生變化。兩轉(zhuǎn)子在低速旋轉(zhuǎn)時會發(fā)生碰撞，造成轉(zhuǎn)子間摩擦甚至卡澀。

　　The clearance between the rotor blades is not appropriate, and the clearance between the blades changes during operation. When two rotors rotate at low speeds, they may collide, causing friction and even jamming between the rotors.

　　如果運行中出現(xiàn)此故障，會使兩轉(zhuǎn)子間或轉(zhuǎn)子與殼體發(fā)生碰撞，發(fā)出強力的撞擊聲；振動變大，甚至能引起基礎(chǔ)振動；同時摩擦部位溫度迅速升高，甚至出現(xiàn)機殼發(fā)熱燒紅現(xiàn)象。

　　If this fault occurs during operation, it will cause collision between the two rotors or between the rotor and the shell, producing a strong impact sound; The vibration increases and can even cause foundation vibration; At the same time, the temperature of the friction area rapidly increases, and even the casing heats up and burns red.

　　軸承損壞

　　Bearing damage

　　風機運行工況差、油封損壞、裝配間隙超標等都會導致軸承損壞，而軸承損壞會造成溫度升高，軸承座溫度也會增加，嚴重時會使軸承座變形。

　　Poor operating conditions of the fan, damage to the oil seal, and excessive assembly clearance can all lead to bearing damage. Bearing damage can cause an increase in temperature, and the temperature of the bearing seat can also increase. In severe cases, it can cause deformation of the bearing seat.

　　特別是軸承內(nèi)外圈抱死時，軸承座與側(cè)蓋板受到較大的額外力，溫度也會很高，軸承座與側(cè)蓋板受熱不均，嚴重時造成側(cè)蓋板變形，出現(xiàn)裂紋。

　　Especially when the inner and outer rings of the bearing are locked, the bearing seat and side cover plate are subjected to significant external forces, and the temperature is also high. The uneven heating of the bearing seat and side cover plate can cause deformation and cracking of the side cover plate in severe cases.

　　軸徑磨損，使軸與軸承內(nèi)圈間隙過大，軸承座磨損使軸承座與軸承外圈間隙過大，都會造成轉(zhuǎn)子卡澀或摩擦。特別是皮帶連接的風機，主動軸由于受皮帶拉力的作用，致使軸承座單向受力較大，容易出現(xiàn)皮帶側(cè)主動軸的軸承座單邊磨損。

　　Wear of the shaft diameter can cause excessive clearance between the shaft and the inner ring of the bearing, and wear of the bearing seat can cause excessive clearance between the bearing seat and the outer ring of the bearing, both of which can cause rotor jamming or friction. Especially for fans connected by belts, the active shaft is subjected to significant unidirectional force on the bearing seat due to the tension of the belt, which can lead to unilateral wear of the bearing seat on the belt side of the active shaft.

　　齒輪磨損

　　Gear wear

　　齒輪磨損，齒輪側(cè)間隙增大，將造成兩轉(zhuǎn)子位置發(fā)生變化，使主動轉(zhuǎn)子與從動轉(zhuǎn)子之間合葉間隙變小、分葉間隙增大，引起兩轉(zhuǎn)子互相碰撞、摩擦。

　　Gear wear and increased clearance on the gear side will cause a change in the position of the two rotors, resulting in a decrease in the clearance between the active rotor and the driven rotor and an increase in the clearance between the blades, causing the two rotors to collide and rub against each other.

　　轉(zhuǎn)子或殼體變形

　　Deformation of rotor or shell

　　如果轉(zhuǎn)子或者殼體變形，會使轉(zhuǎn)子外徑與機殼的間隙過小，造成轉(zhuǎn)子摩擦和卡澀。

　　If the rotor or housing deforms, it will cause the gap between the outer diameter of the rotor and the housing to be too small, resulting in rotor friction and jamming.

　　轉(zhuǎn)子端面與側(cè)蓋板間隙小

　　The gap between the rotor end face and the side cover plate is small

　　如果轉(zhuǎn)子與側(cè)蓋板間隙過小，有雜物擠進轉(zhuǎn)子與側(cè)蓋板間；或軸向定位軸承磨損后，轉(zhuǎn)子的軸向竄量變大，都造成轉(zhuǎn)子與側(cè)蓋板發(fā)生摩擦，引起轉(zhuǎn)子卡澀。

　　If the gap between the rotor and the side cover plate is too small, debris may squeeze into the space between the rotor and the side cover plate; After the axial positioning bearing wears out, the axial displacement of the rotor increases, causing friction between the rotor and the side cover plate, resulting in rotor jamming.

　　4羅茨風機故障處理方式

　　4. Troubleshooting methods for Roots blower

　　調(diào)節(jié)分合葉間隙

　　Adjust the gap between the splitting and folding blades

　　用塞尺檢查轉(zhuǎn)子分、合葉間隙值，使其在標準范圍內(nèi)。檢查調(diào)節(jié)間隙的背帽與螺栓，保證其完好性。

　　Use a feeler gauge to check the clearance value between the rotor and the blade, ensuring it is within the standard range. Check the back cap and bolts that adjust the gap to ensure their integrity.

　　要求：分葉間隙占總間隙的 1/3，但不小于 0.15mm；合葉間隙占總間隙的 2/3，且要大于齒輪側(cè)隙 1.5 倍。

　　Requirement: The blade clearance accounts for one-third of the total clearance, but not less than 0.15mm; the blade clearance accounts for two-thirds of the total clearance, and must be greater than 1.5 times the gear side clearance.

　　合葉為主動轉(zhuǎn)子的嚙合面向被動轉(zhuǎn)子有靠近的趨勢；分葉為主動轉(zhuǎn)子的嚙合面向被動轉(zhuǎn)子有遠離的趨勢。若轉(zhuǎn)子分、合葉間隙不合適，可調(diào)整齒套與輪轂或齒輪與軸的周向相對角度。

　　The meshing surface of the active rotor tends to approach the passive rotor; The meshing surface of the active rotor tends to move away from the passive rotor. If the clearance between the rotor blades is not suitable, the circumferential relative angle between the gear sleeve and the hub or between the gear and the shaft can be adjusted.

　　轉(zhuǎn)子分葉、合葉的調(diào)整是羅茨風機檢修的關(guān)鍵部分，直接決定著檢修質(zhì)量的好壞。不同類型的羅茨風機，有不同的調(diào)節(jié)形式。軸與齒輪為錐型無鍵連接時，一般通過調(diào)節(jié)軸與齒輪周向相對位置；軸與齒輪為鍵連接時，一般通過調(diào)節(jié)從動齒輪與輪轂的相對位置。

　　The adjustment of rotor blade splitting and merging is a key part of Roots blower maintenance, which directly determines the quality of maintenance. Different types of Roots blowers have different forms of adjustment. When the shaft and gear are connected in a tapered keyless manner, the relative position of the shaft and gear in the circumferential direction is generally adjusted; When the shaft is connected to the gear as a key, it is generally achieved by adjusting the relative position between the driven gear and the wheel hub.

　　風機正常運轉(zhuǎn)過程中，隨著齒輪磨損，間隙都會地發(fā)生變化，其中合葉間隙趨向減小，分葉間隙趨向增大。在調(diào)整兩葉輪的工作間隙時，應預先將合葉間隙適當調(diào)大，一般合葉間隙是分葉間隙的 2 倍。

　　During the normal operation of the fan, as the gears wear, the clearance will change, with the closing clearance tending to decrease and the splitting clearance tending to increase. When adjusting the working clearance of the two impellers, the clearance between the blades should be appropriately increased in advance. Generally, the clearance between the blades is twice that of the clearance between the blades.

　　葉輪間隙調(diào)整時，首先將葉片轉(zhuǎn)到與水平方向呈 45° 的位置，此時兩葉輪的間隙即為分葉或合葉間隙。

　　When adjusting the clearance between the impellers, first rotate the blades to a position at a 45 ° angle to the horizontal direction. At this point, the clearance between the two impellers is the split or combined clearance.

　　現(xiàn)場調(diào)節(jié)時，一般用同樣厚度的塞尺固定在兩轉(zhuǎn)子間，并將兩轉(zhuǎn)子固定，再裝入主動齒輪，并將從動齒輪的標記對準主動齒的標記壓入軸上，依次裝上齒輪擋圈，止動墊圈和緊固螺帽。調(diào)整好后再用塞尺測量分葉間隙與合葉間隙的實際大小，如不合適重新調(diào)整，直到符合標準。

　　When adjusting on site, a feeler gauge of the same thickness is generally used to fix between the two rotors, and the two rotors are fixed. Then, the driving gear is installed, and the mark of the driven gear is aligned with the mark of the driving gear and pressed onto the shaft. The gear retaining ring, stop washer, and fastening nut are installed in sequence. After adjustment, use a feeler gauge to measure the actual size of the clearance between the dividing and closing blades. If it is not suitable, readjust it until it meets the standard.

　　更換軸承

　　replace the bearing

　　檢查側(cè)蓋板是否變形有裂紋。變形不嚴重，可打磨高點；變形嚴重則更換側(cè)蓋板；如有裂紋，可進行補焊。

　　Check if the side cover plate is deformed or cracked. The deformation is not severe and can be polished to a higher point; If the deformation is severe, replace the side cover plate; If there are cracks, they can be repaired by welding.

　　檢查軸承座與軸徑是否磨損。如果軸磨損，一般進行補焊；如果軸承座磨損，單獨的軸承座一般更換新件，不進行修理；軸承座與側(cè)蓋板為一體時，則補焊軸承座，使其配合間隙達到技術(shù)要求。

　　Check if the bearing seat and shaft diameter are worn. If the shaft is worn, it is generally repaired by welding; If the bearing seat is worn, the individual bearing seat is generally replaced with a new part without repair; When the bearing seat is integrated with the side cover plate, the bearing seat should be welded to meet the technical requirements for the fitting clearance.

　　檢查齒側(cè)間隙，更換齒輪

　　Check the tooth clearance and replace the gear

　　用紅丹粉檢查齒輪嚙合部位的接觸面積。檢查齒側(cè)間隙的方法有打表法、塞尺法、壓鉛絲法。

　　Check the contact area of the gear meshing part with red lead powder. The methods for checking the tooth flank clearance include marking method, feeler gauge method, and lead wire pressing method.

　　標準要求：側(cè)隙 0.10~0.18mm、嚙合部位在齒面中部，齒表接觸面積沿齒高方向不小于 50%，沿齒寬方向不小于 70%。若檢測結(jié)果不符合要求，需更換齒輪。

　　Standard requirements: Side clearance of 0.10~0.18mm, meshing position in the middle of the tooth surface, tooth surface contact area not less than 50% along the tooth height direction, and not less than 70% along the tooth width direction. If the test results do not meet the requirements, the gear needs to be replaced.

　　用塞尺測量轉(zhuǎn)子與殼體的間隙

　　Measure the gap between the rotor and the housing with a feeler gauge

　　轉(zhuǎn)子與殼體間隙的標準范圍為 0.3~0.6 mm。現(xiàn)場檢修時一般測量 6 點間隙，每個轉(zhuǎn)子的上下與水平方向，如圖所示。

　　The standard range for the clearance between the rotor and the housing is 0.3~0.6 mm. During on-site maintenance, the clearance is generally measured at 6 points, with each rotor in the vertical and horizontal directions, as shown in the figure.

　　變形較小可以進行打磨處理；變形較大或轉(zhuǎn)子與殼體出現(xiàn)裂紋，應及時報廢。

　　Small deformation can be polished; If there is significant deformation or cracks in the rotor and shell, they should be scrapped in a timely manner.

　　清理轉(zhuǎn)子端面與側(cè)蓋板

　　Clean the rotor end face and side cover plate

　　用塞尺法檢測轉(zhuǎn)子端面與機殼的軸向間隙。定位端（ 齒輪側(cè)）間隙d=0.1~0.2 mm，非定位端（ 皮帶輪側(cè)）間隙c=0.3~0.5 mm，總間隙的標準是 0.4~0.7mm。

　　Use a feeler gauge to measure the axial clearance between the rotor end face and the casing. The clearance between the positioning end (gear side) is d=0.1~0.2 mm, and the clearance between the non positioning end (pulley side) is c=0.3~0.5 mm. The standard for the total clearance is 0.4~0.7 mm.

　　不同類型的羅茨風機在不同工況下端隙不同，現(xiàn)場檢修時按各自檢修標準調(diào)整。若單側(cè)間隙不合適，可通過加、減軸承調(diào)整墊片調(diào)整；若總間隙不合適，可通過加、減側(cè)蓋板結(jié)合面的調(diào)整墊片調(diào)整，但墊片厚度一般不超過 1mm。用推軸法測量轉(zhuǎn)子的軸向竄量，竄量標準 0.05~0.10mm， 若超過標準最大值的 1.5 倍，則更換軸承。

　　Different types of Roots blowers have different clearances under different operating conditions, and should be adjusted according to their respective maintenance standards during on-site maintenance. If the clearance on one side is not suitable, it can be adjusted by adding or removing bearing adjustment shims; If the total clearance is not suitable, it can be adjusted by adding or subtracting shims on the joint surface of the side cover plate, but the thickness of the shims generally does not exceed 1mm. Measure the axial displacement of the rotor using the push shaft method, with a displacement standard of 0.05-0.10mm. If it exceeds 1.5 times the maximum standard value, replace the bearing.

　　本文由 三葉羅茨鼓風機  友情奉獻.更多有關(guān)的知識請點擊  http://sxrzhy.cn/   真誠的態(tài)度.為您提供為全面的服務.更多有關(guān)的知識我們將會陸續(xù)向大家奉獻.敬請期待.

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