罗茨风机作为工业生产中常用的气力输送设备，其稳定运行直接影响生产效率。在长期使用过程中，受工况环境、操作规范及设备老化等因素影响，难免出现各类故障。掌握科学的维修技巧，既能缩短停机时间，又能延长设备使用寿命。

　　As a commonly used pneumatic conveying equipment in industrial production, the stable operation of Roots blower directly affects production efficiency. During long-term use, various malfunctions are inevitable due to factors such as working conditions, operating standards, and equipment aging. Mastering scientific maintenance techniques can not only shorten downtime, but also extend the service life of equipment.

　　常见故障的判断方法

　　Common fault diagnosis methods

　　罗茨风机运行时若出现异常声响，需首先排查叶轮与机壳的间隙。正常情况下，叶轮与机壳、叶轮与叶轮之间的间隙应保持在 0.2-0.5 毫米，若间隙过小，运转时会产生摩擦异响；间隙过大则可能导致风量不足。可通过听声棒贴近机壳检测，若异响随转速变化而明显改变，多为间隙问题。

　　If there is any abnormal noise during the operation of the Roots blower, the gap between the impeller and the casing should be checked first. Under normal circumstances, the clearance between the impeller and the casing, as well as between impellers, should be maintained at 0.2-0.5 millimeters. If the clearance is too small, friction noise may occur during operation; Excessive gap may lead to insufficient air flow. It can be detected by approaching the casing with a listening stick. If the abnormal noise changes significantly with the speed, it is mostly a gap problem.

　　温度异常是另一常见问题。轴承部位温度超过 90℃时，需停机检查。首先触摸轴承座，若单侧温度偏高，可能是轴承装配过紧或润滑不良；若整体温度上升，需排查冷却系统是否堵塞，或进气压力是否超出额定范围。

　　Abnormal temperature is another common issue. When the temperature of the bearing exceeds 90 ℃, the machine needs to be stopped for inspection. Firstly, touch the bearing seat. If the temperature on one side is too high, it may be due to tight assembly or poor lubrication of the bearing; If the overall temperature rises, it is necessary to check whether the cooling system is blocked or whether the intake pressure exceeds the rated range.

　　风量骤降时，应先检查进出气管道是否存在堵塞，过滤装置是否积尘过多。若管道通畅，则可能是叶轮磨损导致间隙增大，或皮带传动打滑使转速下降。可通过测量电机电流与风机转速的对应关系，判断传动系统是否正常。

　　When the air volume drops sharply, it is necessary to first check whether the inlet and outlet pipelines are blocked and whether the filtering device has accumulated too much dust. If the pipeline is unobstructed, it may be due to impeller wear causing an increase in clearance, or belt transmission slipping causing a decrease in speed. It is possible to determine whether the transmission system is normal by measuring the corresponding relationship between the motor current and the fan speed.

　　核心部件的维修技巧

　　Maintenance skills for core components

　　轴承是罗茨风机的易损件，维修时需注意装配精度。拆卸轴承前，应先标记轴承在轴上的位置，避免重装时方向错误。安装新轴承时，需用加热法将轴承预热至 80-100℃，再平稳套入轴颈，禁止直接敲击轴承外圈。装配后需转动主轴，确保无卡滞感，径向跳动量应控制在 0.05 毫米以内。

　　Bearings are vulnerable parts of Roots blowers, and attention should be paid to assembly accuracy during maintenance. Before disassembling the bearing, mark the position of the bearing on the shaft to avoid directional errors during reassembly. When installing a new bearing, it is necessary to preheat the bearing to 80-100 ℃ using heating method, and then smoothly insert it into the journal. It is forbidden to directly strike the outer ring of the bearing. After assembly, the spindle needs to be rotated to ensure no jamming sensation, and the radial runout should be controlled within 0.05 millimeters.

　　密封件老化会导致漏气，更换时需清理密封槽内的残留胶状物，选用与原型号匹配的骨架油封。安装时在油封唇部涂抹润滑脂，用专用工具均匀压入，防止唇部变形。对于填料密封结构，应分层更换填料，每层切口需错开 90 度，压紧力以滴漏量每分钟 3-5 滴为宜。

　　Aging of seals can cause air leakage. When replacing, it is necessary to clean the residual adhesive in the sealing groove and select a skeleton oil seal that matches the prototype number. Apply lubricating grease to the lip of the oil seal during installation and press it evenly with a special tool to prevent lip deformation. For the packing sealing structure, the packing should be replaced in layers, with each layer's cut staggered by 90 degrees, and the clamping force should be 3-5 drops per minute.

　　叶轮维修需注重平衡精度。若叶轮表面出现磨损或裂纹，可采用氩弧焊补焊，焊后需进行动平衡测试。平衡精度应达到 G6.3 级，即转速在 3000 转 / 分钟时，允许不平衡量不超过规定值。修复后的叶轮需重新测量间隙，确保符合运行标准。

　　Attention should be paid to balancing accuracy in impeller maintenance. If there is wear or cracking on the surface of the impeller, argon arc welding can be used for repair welding, and dynamic balance testing is required after welding. The balance accuracy should reach G6.3 level, which means that when the speed is 3000 revolutions per minute, the allowable unbalance should not exceed the specified value. The repaired impeller needs to be re measured for clearance to ensure compliance with operating standards.

　　日常维护与保养要点

　　Key points for daily maintenance and upkeep

　　定期检查润滑系统是预防故障的关键。齿轮箱润滑油应每运行 1000 小时更换一次，换油时需彻底清洗油箱，避免杂质残留。润滑油需选用规定型号，油位应保持在油标中线位置，过高易导致油温升高，过低则润滑不良。

　　Regular inspection of the lubrication system is key to preventing malfunctions. The lubricating oil of the gearbox should be replaced every 1000 hours of operation, and the oil tank should be thoroughly cleaned to avoid residual impurities. Lubricating oil should be selected according to the specified model, and the oil level should be kept at the center line of the oil gauge. If it is too high, it can easily cause the oil temperature to rise, while if it is too low, it will result in poor lubrication.

　　过滤器需每月清洁一次，对于粉尘较多的工况，应缩短至每两周一次。清洁时可用压缩空气反吹，若滤芯破损需及时更换，防止杂质进入风机内部造成磨损。

　　The filter needs to be cleaned once a month, and for working conditions with high dust, it should be shortened to once every two weeks. Compressed air can be used for back blowing during cleaning. If the filter element is damaged, it should be replaced in a timely manner to prevent impurities from entering the interior of the fan and causing wear.

　　皮带传动系统应每周检查张紧度，以按压皮带中部下沉 10-15 毫米为宜。皮带轮的平行度偏差需控制在 0.5 毫米 / 米以内，避免皮带偏磨。若发现皮带出现裂纹或老化，应整组更换，禁止新旧皮带混装。

　　The tension of the belt transmission system should be checked weekly, and it is advisable to press the middle of the belt to sink 10-15 millimeters. The parallelism deviation of the pulley should be controlled within 0.5 millimeters per meter to avoid belt wear. If cracks or aging are found on the belt, the entire set should be replaced, and mixing old and new belts is prohibited.

　　本文由罗茨风机友情奉献.更多有关的知识请点击:https://www.sdxinlujx.com我们将会对您提出的疑问进行详细的解答，欢迎您登录网站留言.

　　This article is a friendly contribution from Roots blower For more information, please click: https://www.sdxinlujx.com We will provide detailed answers to your questions. You are welcome to log in to our website and leave a messag