Dynamic balancing is important for reducing vibration and improving the running stability of an ultrafine pulverizer. During the balancing process, operators should pay particular attention to equipment cleanliness, balancing instrument calibration, and balancing weight accuracy.
1. Preparation
Before balancing, thoroughly clean the rotor and related components. Remove oil, dust, material residue, and other contaminants that could affect measurement accuracy.
Inspect the rotor for cracks, excessive wear, deformation, or other damage. Also check the keyway and shaft connection to ensure that all components are properly fitted before testing.
2. Working Environment
Perform the balancing operation on a stable surface away from external vibration sources. Keep the surrounding area clean to minimize dust interference.
A relatively stable temperature and humidity environment can also help improve measurement consistency, particularly when high balancing accuracy is required.
3. Balancing Instrument Setup
Install the sensors, fixtures, and other measuring components according to the instrument manufacturer's instructions. Make sure all sensors are securely positioned and provide stable signal acquisition.
Before measurement, zero and calibrate the balancing instrument to ensure that the detected vibration amplitude, imbalance value, and phase information are reliable.
4. Measurement Process
Before each measurement, make sure the rotor has come to a complete stop before restarting the test according to the specified balancing procedure.
Take repeated measurements when necessary and compare the results to improve measurement reliability. Record the vibration value, imbalance magnitude, and phase angle for each test.
The identified imbalance position can be clearly marked on the rotor to facilitate subsequent correction.
5. Balancing Weight Installation
Select suitable balancing weights according to the rotor design and balancing equipment requirements. The weight material and attachment method should be compatible with the operating speed and working environment.
Install the balancing weights precisely according to the phase angle indicated by the balancing instrument. When performing two-plane balancing, operators should also consider the vector relationship between the correction planes to avoid introducing a new imbalance.
6. Final Verification
After correction, perform a staged test run rather than immediately operating the machine at full speed. The rotor can be gradually brought to approximately 20%, 50%, and 80% of the rated speed while monitoring vibration changes at each stage.
After continuous operation, perform another vibration and balancing check to confirm that the rotor remains stable under actual working conditions. Any abnormal vibration, temperature rise, or mechanical noise should be investigated before normal operation resumes.
For customers requiring replacement rotors, shafts, housings, or other precision mechanical components for pulverizing equipment, Hansheng Automation can provide custom machining based on customer drawings and technical specifications, with manufacturing parameters matched to the required dimensional accuracy and assembly requirements.
