1. Uneven atomization
Usually caused by wear of the atomizing disc/nozzle, abnormal material viscosity, or unstable rotational speed. Wear parts need to be replaced, the material concentration should be adjusted to 30% -50%, and the calibration speed sensor error should be controlled within ± 2%.
2. Wall sticking problem
Slight wall sticking (production impact<5%) can increase the cooling water flow rate of the tower wall to over 2m/s, and 0.3% micro powder silica gel can be added; Severe wall sticking (affecting>20%) requires mechanical scraping and ethanol scrubbing, and long-term PTFE coating modification is recommended (friction coefficient<0.04).
3. The moisture content of the finished product exceeds the standard
Check the deviation of the exhaust temperature (allowable ± 2 ℃), adjust the feed rate (reducing the feed amount by 10% can reduce the moisture content by 0.8% -1.2%), and optimize the atomization pressure to 0.5 MPa corresponding to a flow rate of 15-20 L/h.
4. Nebulizer blockage
The pressure gauge shakes and the spray cone deflects. The material needs to be pre treated with a three-stage filter with a mesh size of 200 or more. During cleaning, a 1% -2% nitric acid solution should be used to circulate and rinse at 60 ℃.
5. The efficiency of the cyclone separator decreases
Emergency treatment is required for pressure drop exceeding 800Pa. The inlet wind speed should be maintained at 18-22m/s, and a 0.1mm sensitive fluorescent powder should be used for leak detection. If the cone wall thickness is less than 3mm, it needs to be replaced.
6. Control system malfunction
E1 code (temperature sensor offset>5 ℃) requires sensor replacement; E05 code (frequency converter overload) check belt tension 35-40N. Daily monitoring of atomizer bearing temperature (<65 ℃) and gearbox oil level (1/2-2/3 window) is required.