The multi-stage centrifugal fan with welded structure is a high-pressure fan composed of multiple impellers connected in series, and its core components are manufactured using welding technology. Compared with single-stage centrifugal fans, multi-stage design significantly improves the wind pressure output capacity by compressing gas step by step.

?Regular maintenance costs The cost of daily inspections (such as cleaning filters and monitoring vibrations) is relatively low, with a single labor cost of about 200-500 yuan.

Cleaning inspection: Clean the precision machined parts such as rotors and bearings to ensure that there is no rust or rust proof grease residue. The rotating parts should be flexible and free of jamming. Basic acceptance: Check the flatness of the foundation and the position of the anchor bolt holes, with a horizontal deviation of ≤ 0.05/1000. Component verification:

Under standard operating conditions, the operating noise of multi-stage centrifugal fans is usually between 85-100 decibels, and optimized design models (such as D-type) can reduce it to almost no noise outside the machine room. Compared to single-stage centrifugal fans (50-85 decibels), multi-stage models have higher noise levels due to the large number of impellers and complex compression processes.