Roots Blower The design of is generally based on the use environment, temperature, air volume, air pressure, medium, etc. of the fan. Some enterprises of high pressure roots fans have not completely based on these factors, resulting in the following factors: improper design, poor dynamic characteristics, vibration in operation; Unreasonable structure and stress concentration; The design working speed is close to or belongs to the critical speed area; Inaccurate thermal expansion leads to poor thermal alignment and increased vibration of high-pressure roots blower. The reasons also include the following: 1. Manufacturing reason: the manufacturer's quality requirements for the fan will also affect the operation of the fan, such as poor manufacturing and parts manufacturing, and insufficient precision; Poor material quality, insufficient strength and manufacturing defects; The rotor dynamic balance does not meet the technical requirements.
2. Reason for installation and maintenance: The installation accuracy of the high-pressure roots blower plays a vital role in the operation of the blower. If the installation accuracy does not meet the installation requirements, the operation of the high-pressure roots blower will play a destructive role. During the installation of the fan, there are the following factors, such as improper mechanical installation, misalignment of components, and large preload; Poor shaft alignment; The fit clearance, interference and relative position of the machine are adjusted improperly; The rotor is incorrectly placed for a long time, which changes the dynamic balance accuracy; The original matching properties and accuracy of the machine were damaged because the maintenance was not carried out as required. 3. Operation and operation reasons: During the use of roots blower, the maintenance of the fan plays a decisive role in the operation quality of roots blower. For example, the process parameters deviate from the design values, and the machine operation conditions are abnormal; The machine operates under overspeed and overload, which changes the working characteristics of the machine; Poor lubrication or cooling; Partial damage or scaling of rotor; Improper operation during startup, shutdown or acceleration, uneven thermal expansion or too long stay in key parts.
4. Reasons for machine degradation: general equipment has a certain service life, and the performance of equipment will decline after reaching a certain service life. So is Roots blower. For long-term operation, the rotor deflection will increase, or the dynamic balance will deteriorate; The rotor is partially damaged, peeled or cracked; Wear, pitting or corrosion of parts; The mating surface deteriorates, resulting in insufficient interference or looseness, which destroys the nature and accuracy of the mating; The foundation of the machine is subject to uneven settlement, and the machine shell is deformed.
