罗茨鼓风机的工作原理、操作规程及常见故障处理

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

　　罗茨鼓风机作为容积式风机的典型代表，凭借其结构简单、运转平稳、性能稳定等特点，在污水处理、水产养殖、水泥输送、化工冶炼等领域有着广泛应用。本文将全面介绍罗茨鼓风机的工作原理、规范操作流程以及常见故障处理方法，帮助操作人员更好地理解和使用这一重要设备。

　　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、罗茨鼓风机的工作原理

　　1、 Working principle of Roots blower

　　罗茨鼓风机是一种容积式回转风机，其核心工作原理基于两个转子的同步反向旋转来实现气体的强制输送。与普通离心风机不同，罗茨鼓风机的风量与转速成严格的正比关系，而受压力变化影响较小，这一特性使其在需要稳定风量的工业场景中尤为珍贵。

　　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.

　　三叶型转子的设计是现代罗茨鼓风机的标准配置，相比传统的二叶型设计，三叶型转子每转动一次可完成3次吸、排气过程，显著降低了气体脉动，使负荷变化更平缓，同时减少了机械振动和噪声。两个完全相同的三叶型转子平行安装在椭圆形机箱内，通过一对精密同步齿轮的啮合传动，确保两个转子在高速旋转时始终保持正确的相位关系，既不会相互接触碰撞，又能维持极小的恒定间隙。

　　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.

　　当电机驱动主动轴旋转时，通过同步齿轮带动从动轴作相反方向的旋转。随着转子的转动，在进气侧形成由转子、机壳和端盖围成的封闭腔室，外界气体被吸入这些腔室。转子继续旋转，将封闭的气体沿机壳内壁无压缩地推送至排气侧。当转子突缘转过排气口边缘的瞬间，排气侧的高压气体迅速回流至腔室，对气体进行瞬时加压，完成强制排气过程。

　　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，罗茨鼓风机本身并不压缩气体，其压力的升高完全依赖于排气口工作系统的背压。这也是为什么罗茨鼓风机严禁在完全关闭进出口阀门的情况下启动或运行，否则会因压力急剧升高而导致设备损坏。

　　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.

　　罗茨鼓风机的间隙控制是保证其高效运行的关键技术。这包括：转子与机壳之间的径向间隙（通常0.3-0.6mm）、转子与端盖之间的轴向间隙（定位端0.1-0.2mm，非定位端0.3-0.5mm）以及两转子之间的啮合间隙（分叶间隙和合叶间隙）。这些间隙既保证了转子自由旋转不产生摩擦，又最大限度减少了气体从高压侧向低压侧的内泄漏，确保输送效率。

　　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、罗茨鼓风机的结构特点

　　2、 Structural characteristics of Roots blower

　　一台标准的罗茨鼓风机主要由驱动机（电机或柴油机）和机头两大部分组成。机头是罗茨鼓风机的核心工作组件，其精密结构决定了设备的性能和使用寿命：

　　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:

　　转子系统：通常由高强度铸铁或合金钢制成，现代三叶转子多采用渐开线或外摆线的包络线作为型线设计，确保运转平稳。转子与轴为整体结构，无磨损设计保证长期使用性能不变。

　　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.

　　同步齿轮：高精度齿轮副确保两转子始终保持正确相位，齿轮通常采用优质合金钢经渗碳淬火处理，具有极高的耐磨性和抗疲劳强度。

　　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.

　　密封系统：包括轴端密封和墙板密封，防止润滑油泄漏和外界杂质进入。高端机型采用进口氟橡胶油封，耐高温、耐磨且使用寿命长。

　　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.

　　润滑系统：轴承和齿轮采用飞溅润滑或强制润滑方式，润滑油一般选用220#中负荷齿轮油（夏季40#，冬季20#机械油）。

　　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).

　　壳体组件：包括机壳和两侧墙板，形成封闭的工作腔室。壳体上的进气口和出气口通常呈对角线布置，便于气体流动。

　　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.

　　罗茨鼓风机的性能优势主要体现在：强制输气特性使流量稳定不受压力变化影响；结构简单紧凑，维护方便；无需内部润滑，输送气体不受油污染；转速高，体积小，便于系统集成；机种齐全，能够满足不同压力和流量需求。

　　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、操作规程

　　3、 Operating procedures

　　规范的操作流程是确保罗茨鼓风机安全运行和延长使用寿命的前提条件。操作人员必须经过专业培训并取得操作证方可上岗，同时要严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、启动前的准备启动前的检查工作至关重要，主要包括以下几个方面：

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

　　①电气系统检查：确认电源电压波动在380V±10%范围内，频率符合标牌要求；检查电机接地线完好，电气装置状态良好；观察各仪表（电流表、电压表、压力表等）是否正常，若有异常应及时通知维修人员更换。

　　① 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.

　　②机械状态确认：手动盘车2-3圈，检查转子转动是否灵活，有无卡涩或异常声响；检查所有连接螺栓（地脚螺栓、联轴器螺栓等）和定位销是否紧固；确认对轮罩或皮带防护罩安装到位，防止机械伤害。

　　② 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.

　　③润滑系统准备：检查油箱油位应在油标中心位置（油窗中央），油质清洁无杂质；轴承润滑脂应充足，一般采用不锈钢基润滑脂或二硫化钼润滑脂；对于水冷式轴承座，需先打开冷却水阀门，确认水流畅通。

　　③ 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.

　　④管路阀门调整：完全打开进气调节阀和排气阀，确保无负荷启动；检查旁通管路是否畅通；清洁或更换进气过滤器滤网，防止堵塞；确认系统管道无焊渣等异物残留。

　　④ 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.

　　⑤环境安全检查：清除风机周围的障碍物和杂物，确保操作空间充足；检查地基是否牢固，设备安装是否平稳；室外安装时应设置防雨棚，防止电机受潮。

　　⑤ 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.

　　特别需要注意的是，罗茨鼓风机严禁带压启动，每次启动前必须确保放空阀完全打开，出口阀门处于开启状态。这是避免电机过载和设备损坏的基本要求。

　　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、启动与运行监控

　　2. Startup and operation monitoring

　　完成启动前检查并确认一切正常后，方可进入启动程序

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

　　①空载启动：按下启动按钮，让风机在无负荷状态下运行。观察电机启动电流和风机加速过程是否平稳。新安装或大修后的风机应进行至少30分钟的空载试运行。

　　① 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.

　　②逐步加载：待风机达到额定转速且运行平稳后，缓慢调节出口阀门（或逐渐关闭放空阀），使压力逐步升高至工作压力。这一过程应缓慢进行，避免压力突变对系统和风机造成冲击。

　　② 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.

　　③参数调整：根据工艺要求，通过旁路阀或变频器调整风量和压力。注意罗茨鼓风机的流量不能通过开关阀门来调节，否则会导致超压危险。短时间需较少流量时，应使用旁路调节装置。

　　③ 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.

　　风机进入正常运行后，操作人员需进行定期巡检和监控，主要内容包括：

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

　　①振动与噪声：用测振仪检查风机各部位振动速度，轴承部位径向振动速度不应超过6.3mm/s；监听运转声音是否均匀平稳，出现异常响声应立即停机检查。

　　① 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.

　　②温度监测：轴承温度应低于95℃，温升不超过40℃；润滑油温度不高于65℃；齿轮箱温度在允许范围内。若温度异常升高，应检查润滑和冷却系统。

　　② 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.

　　③压力与流量：定期记录进出口压力值，确保在铭牌标定范围内；观察流量是否满足工艺要求，发现不足时应检查过滤器和管道系统。

　　③ 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.

　　④电气参数：监控电机电流和电压，电流过高可能是超载或机械故障的信号；三相电流应平衡，偏差不超过10%。

　　④ 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%.

　　⑤润滑状况：每小时检查油位一次，确保在油标线范围内；观察油质变化，发现乳化或杂质增多应及时更换；定期向轴承补充润滑脂。

　　⑤ 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.

　　在运行过程中，若发现异常情况如剧烈振动、异常噪音、温度骤升、电流过大等，应立即按下紧急停机按钮，打开放空阀卸压，然后查明原因并排除故障。严禁在运转状态下对风机进行维修作业。

　　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、正常停机与维护

　　3. Normal shutdown and maintenance

　　规范的停机程序对保护罗茨鼓风机同样重要，不当的停机操作可能导致设备损坏：

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

　　①工艺降载：逐步打开放空阀，同时关小出口阀门，将系统压力降至最低。

　　① Process load reduction: Gradually open the vent valve and close the outlet valve to minimize the system pressure.

　　②切断电源：待压力完全卸除后，按下停止按钮使风机停机。注意记录停机时的电压、电流、风压等数据，供后续分析参考。

　　② 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.

　　③后续处理：关闭出风阀和冷却水阀门（如有）；检查并清扫设备表面，保持清洁；将各操作开关置于空档位置。

　　③ 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、日常维护保养

　　4、 Daily maintenance and upkeep

　　日常维护保养是保证罗茨鼓风机长期稳定运行的关键，主要包括以下内容：

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

　　1、每日保养：检查润滑部位油位和质量；清洁设备表面；紧固可能松动的螺栓；检查皮带张紧度（如为皮带传动）。

　　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、每月维护：卸掉轴承侧盖及轴承座上的沉头螺钉，补充2号钙钠基润滑油；检查齿轮啮合情况和齿轮油状态；清洁空气过滤器滤芯。

　　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、季度保养：彻底更换润滑油；清洗轴承箱并检查轴承磨损情况；检查调整转子各部位间隙；清理风机及气体输送管道内部的灰尘和污垢。

　　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：全面解体检查，测量叶轮间隙并调整；检查齿轮磨损和啮合状况，必要时更换；校验安全阀和压力表；检查电机绝缘状况。

　　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.

　　对于备用风机，应定期进行切换运行（建议每隔24小时切换一次），避免长期单台运行导致设备疲劳，同时也确保备用设备处于良好状态。每次检修后应进行试运转，时间不少于30分钟，确认无异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、常见故障

　　5、 Common faults

　　1、机械类故障及处理

　　1. Mechanical faults and their handling

　　罗茨鼓风机在长期运行过程中可能出现各种故障，及时识别和处理这些故障对保障生产安全至关重要。以下是常见的机械类故障及其解决方法：

　　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:

　　①叶轮摩擦故障

　　① Friction fault of impeller

　　●叶轮与叶轮摩擦：通常由叶轮污染（清除杂质）、齿轮磨损（调整或更换齿轮，保证侧隙在平均值的30%~50%以内）、齿轮固定不牢（重新装配，确保锥度配合接触面积达75%）或轴承磨损游隙增大（更换轴承）引起。●叶轮与墙板/机壳摩擦：主要原因包括安装间隙不正确（重新调整间隙）、运转压力过高（排查超载原因，降压至规定值）、运转温度过高（检查安装精度，减少管道拉力）、机壳变形（修复或更换）以及轴承轴向定位不佳（检查修复轴承，保证游隙）。

　　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).

　　②. 轴承故障

　　②. bearing failure

　　?轴承发热或损坏多因润滑不良（检查油质油量）、皮带过紧（调整张力）或装配不当所致。表现为温度升高、振动加大，严重时轴承座发热变形。需更换轴承并检查轴承座磨损情况，轻微变形可打磨修复，严重变形或裂纹需更换侧盖板。

　　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.

　　③齿轮磨损

　　③ Gear wear

　　齿轮侧隙增大会导致转子相位变化，使合叶间隙减小、分叶间隙增大，引发转子碰撞。检查齿侧间隙（标准0.10~0.18mm），用红丹粉检查啮合接触面积（齿高方向≥50%，齿宽方向≥70%），不符合要求时应更换齿轮。

　　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.

　　④转子卡涩

　　④ Rotor jamming

　　长期停机后易出现，原因包括：转子间隙不当（调整分叶、合叶间隙，分叶间隙≥0.15mm，合叶间隙为分叶的2倍）、异物进入（清除杂物）、轴向窜量过大（调整端隙，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).

　　⑤振动异常

　　⑤ Abnormal vibration

　　可能由转子不平衡（清除叶轮附着物或重新做动平衡）、联轴器不对中（重新校正）、地脚螺栓松动（紧固）、轴承损坏（更换）或管道应力（调整管路支撑）引起。剧烈振动时应立即停机检查。

　　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.

　　处理机械故障时，必须先停机泄压，切断电源并挂上警示牌，待风机完全冷却后再进行检修工作。尤其要注意转子间隙的调整，这是罗茨鼓风机检修的关键技术点，直接影响设备性能和使用寿命。

　　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、性能类故障及处理

　　2. Performance related faults and their handling

　　除了机械故障外，罗茨鼓风机在运行过程中还可能遇到各种性能类故障，影响其正常工作效能：

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

　　①风量不足

　　① Insufficient air volume

　　可能原因：进口过滤器堵塞（清除或更换滤芯）；叶轮磨损间隙过大（修复或更换叶轮）；皮带打滑（调整张力或增加皮带根数）；进口压力损失大（调整进口压力至规定值）；管道泄漏（检查并修复漏点）。

　　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).

　　处理措施：定期维护空气过滤器；检查转子磨损情况，及时维修；调整皮带张力或更换磨损皮带；检查进气系统是否通畅；用肥皂水检测管道泄漏点。

　　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.

　　② 温度过高

　　② The temperature is too high

　　?可能原因：油箱油量过多、过稠或脏污（调整油位或更换合适润滑油）；过滤器或消声器堵塞（清除堵塞物）；系统压力超过规定值（通过旁路降低压差）；叶轮磨损间隙大（修复间隙）；通风不良（增设通风设施）；转速过低皮带打滑（调整转速或皮带张力）。

　　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).

　　特别提醒：罗茨鼓风机在环境温度超过40℃时应采取降温措施，如增加排气扇或搭建遮阳棚，否则会显著缩短设备寿命。

　　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.

　　③电流异常

　　③ Abnormal current

　　●电流过大：可能因电压过低（暂停运行或更换大功率电机）；过滤器/管路堵塞（清除堵塞）；内部摩擦（检查并调整间隙）；超载运行（调整至额定负载）；电机故障（检修或更换电机）。

　　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).

　　●电流波动：通常反映负载不稳定，应检查系统压力变化和阀门状态；三相电流不平衡可能是电源问题或电机绕组故障。

　　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.

　　④漏油问题

　　④ Oil leakage issue

　　主要表现：油箱油位过高由排油口漏出（降低油位至标准线）；轴端密封磨损（更换油封，推荐使用氟橡胶材质）；中间腔压力过高（疏通通风口，安装2mm孔径的旋塞）。

　　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).

　　预防措施：定期检查油封状态；保持呼吸阀畅通；避免超压运行；使用合适的润滑油，不得混用不同牌号油品。

　　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.

　　⑤异常噪音

　　⑤ Abnormal noise

　　●金属碰撞声：可能转子摩擦或齿轮损坏（立即停机检查间隙和齿轮状态）。

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

　　●周期性敲击声：通常为轴承损坏或转子不平衡（检查更换轴承或做动平衡）。

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

　　●气流啸叫声：反映系统阻力过大或阀门开度不当（检查管道系统和阀门）。

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

　　对于性能类故障，操作人员应结合多种参数变化综合判断，如同时监测压力、温度、电流和振动情况，可以更准确地定位故障源。建立运行记录制度，定期记录各项参数，有助于及时发现潜在问题并预测设备状态。

　　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、安全操作特别注意事项

　　6、 Special precautions for safe operation

　　为确保罗茨鼓风机的安全运行，避免人身伤害和设备事故，操作和维护人员必须严格遵守以下安全规范：

　　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. 禁止操作事项

　　1. Prohibited operations

　　●严禁在完全关闭进出口阀门的情况下启动或运行风机，这会导致压力急剧升高引发爆炸危险。

　　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.

　　●禁止拆除或绕过安全防护装置（如联轴器护罩、皮带防护罩等）运行设备，防止机械伤害。

　　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号不符的润滑油，不同油品禁止混用，避免润滑失效。

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

　　●禁止在风机运行中进行维修作业，必须停机、断电、泄压并挂警示牌后方可检修。

　　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. 危险预防措施

　　2. Hazard prevention measures

　　●电气安全：检查电机接地良好；湿手不得操作电气开关；定期检查电缆绝缘状况。

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

　　●高温防护：运行中轴承和壳体温度可能很高，避免直接接触，停机后应等待充分冷却再进行维护。

　　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.

　　●噪声防护：高噪声环境下应佩戴耳塞或耳罩，长期暴露可能造成听力损伤。

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

　　●气体安全：输送易燃或有毒气体时，确保工作区域通风良好，配备气体检测仪和防护装备。

　　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. 特殊工况处理

　　3. Handling of special working conditions

　　●长时间停机后的启动：应手动盘车数圈，检查转子是否灵活；初次启动建议先空载运行1小时以上，观察无异常再加载。

　　● 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.

　　●冬季运行：环境温度低于5℃时，选用低温润滑油；水冷机型停机后应排净冷却水，防止冻裂。

　　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.

　　●输送腐蚀性气体：应选用特殊材质（如不锈钢）风机，并缩短维护周期，特别注意检查转子腐蚀情况。

　　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. 应急处理程序

　　4. Emergency response procedures

　　发现下列情况应立即紧急停机：异常剧烈振动或撞击声；轴承温度超过95℃；电机冒烟或电流异常飙升；管道破裂或气体大量泄漏。

　　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.

　　停机步骤：迅速打开放空阀泄压→按下急停按钮→关闭出口阀门→报告上级并记录事件详情。

　　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.

　　●火灾处理：切断电源，使用二氧化碳灭火器扑救，禁止用水扑灭电气火灾。

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

　　企业应定期组织安全培训，使操作人员充分了解罗茨鼓风机的危险性和防护措施。新员工必须在有经验人员指导下操作设备，未经考核合格不得独立上岗。同时，建议在设备明显位置张贴安全操作规程和紧急联系人信息，提高应急响应效率。

　　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.