During the installation of Roots blower, the clearance between impeller and impeller, between impeller and wallboard, between impeller and casing must be well controlled and installed according to the standard, because this is the main factor affecting the normal operation of Roots blower. If the working clearance is exceeded, the fan will not be able to operate, and the clearance in the inner cavity must be within the allowable range. Once there is deviation, different faults will occur, Friction collision occurs. Sanniu Company suggested the causes of different failures and countermeasures.
The structure of Roots blower is simple. There are only two rotors in the casing. The friction phenomenon in operation can be divided into three types: friction between rotors, friction between two rotors and the casing, friction between two rotor end faces and the wall plate. The friction causes are as follows:
1. The shaft is not rigid enough. When the roots blower rotates, if the rigidity of the main shaft and driven shaft is not enough, it will produce torsional deformation (this deformation is within the elastic limit), which will cause friction between two rotors or between the rotor and the casing. At this time, the shaft shall be reprocessed to improve the rigidity or replace the shaft with strong rigidity.
2. The gear is worn. Especially when the two rotors of the blower are placed horizontally, the position of the two rotors changes after the gear is worn, resulting in friction between the two rotors. At this time, the gear should be overhauled or replaced with a new gear.
3. The gear keyway and key are loose. As the keyway and key become loose, the position of the two rotors will change, which will cause friction between the rotors. At this time, the key should be repaired or replaced to make it not loose.
4. Bearing clearance exceeds the specified technical requirements, and there are hard impurities in the transmission gas, which will cause friction between rotors. At this time, the bearing clearance should be readjusted or impurities in the gas should be removed.
Then there is friction and collision phenomenon of Roots blower - possible causes:
1. Loose gear hub key
2. Loose impeller key
3. Loose fit between gear ring (Roots blower) and gear hub
4. Poor fit between gear hub and journal
5. The clearance between impellers is uneven, exceeding the allowable value
6. The gear is worn so that the meshing backlash Cn exceeds the allowable range
7. Foreign matters mixed in the cylinder or irregular objects with conveying medium, bending deformation of the driven shaft and wear of the bearing
I believe that after reading the above content, you should also have some understanding of the handling method for the collision of Roots blower. I hope it will be helpful to you.
Text term label: Roots blower
Link to this article: //wuhanzhcs.com/html/news/n02/637.html
