罗茨鼓风机振动的原因及解决方法
Cause and Solution of Roots Blower Vibration
罗茨鼓风机在使用过程中，由于各种原因，振动加剧，后来损坏，严重时会造成重大设备事故。以下是罗茨鼓风机振动的一些故障原因。
During the use of Roots blower, due to various reasons, the vibration is intensified, and then it is damaged, which may cause major equipment accidents in serious cases. The following are some fault causes of Roots blower vibration.
(1)设计原因:罗茨鼓风机的设计一般是根据鼓风机的使用环境、温度、风量、风压、介质等进行设计的，但有些企业没有完全根据这些因素进行选择，导致鼓风机设计不当、动态特性差、运行时振动的结构不合理、应力集中的设计作业转速接近或落入临界转速区的热膨胀量计算不正确，热状态不良。
(1) Design reason: Roots blower is generally designed according to the use environment, temperature, air volume, air pressure, medium, etc. of the blower. However, some enterprises have not selected the blower completely according to these factors, resulting in improper design of the blower, poor dynamic characteristics, unreasonable structure of vibration during operation, close design operation speed of stress concentration or incorrect calculation of thermal expansion amount falling into the critical speed zone, and poor thermal state.
(2)安装和维护原因:罗茨鼓风机的安装精度对鼓风机的运行起着关重要的作用。如果安装精度达不到安装要求，会破坏罗茨鼓风机的运行。在鼓风机的设置过程中，机械设置不当，零件错位，预负荷大的轴系对中不良的机械配合间隙、过剩量和相对位置调整不当的转子长期放置不当，动平衡精度发生变化，没有按照规定进行检查，破坏了机械本来的配合性质和精度。
(2) Reason for installation and maintenance: The installation accuracy of Roots blower plays a vital role in the operation of the blower. If the installation accuracy fails to meet the installation requirements, the operation of roots blower will be damaged. During the setting of the blower, the mechanical setting was improper, the parts were misaligned, the poor mechanical fit clearance of the shafting with large preload, the excessive amount and the rotor with improper adjustment of the relative position were improperly placed for a long time, the dynamic balance accuracy changed, and the inspection was not carried out according to the provisions, which damaged the original matching nature and accuracy of the machinery.
(3)操作运行原因：在罗茨风机使用过程中，对风机维护、保养的好坏，对罗茨风机的运行质量起着决定性作用。如：工艺参数偏离设计值，机器运行工况不正常；机器在超转速、超负荷下运行，改变了机器的工作特性；润滑或者冷却不良；转子局部损坏或结垢；启停机或升降速过程操作不当，热膨胀不均匀或在临界区停留时间过久。
(3) Operation reason: During the use of Roots blower, the quality of fan maintenance plays a decisive role in the operation quality of Roots blower. For example, the process parameters deviate from the design values, and the operating conditions of the machine are abnormal; The operation of the machine at over speed and over load changes the working characteristics of the machine; Poor lubrication or cooling; Rotor is locally damaged or scaling; Improper operation during startup and shutdown or speed increase and decrease, uneven thermal expansion or excessive time in critical area.

(4)机器劣化原因：一般设备在使用时都有一定的年限，达到一定年限设备性能将恶化。对罗茨风扇也是如此，长时间运转时，转子挠度增加或动平衡劣化，转子局部损坏、脱落或产生裂纹，零件磨损、点蚀或腐蚀等，配合面受力劣化，产生过盈、过松等，破坏配合性能和精度，机架基础沉降不均，机壳变形。
(4) Reasons for machine deterioration: General equipment has a certain number of years in use, and the performance of equipment will deteriorate after reaching a certain number of years. The same is true for Roots fans. During long-term operation, the rotor deflection increases or the dynamic balance deteriorates, the rotor is partially damaged, peeled off or cracked, parts are worn, pitted or corroded, the force on the mating surface deteriorates, resulting in interference, looseness, etc., which destroys the mating performance and accuracy, the frame foundation settlement is uneven, and the casing is deformed.
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The above is a detailed introduction about Roots blower, and we hope it will be helpful to you. If you have any questions, please contact us. We will provide services for you with our attitude http://www.sddyfd.com/