What are the disassembly and assembly procedures for a centrifugal blower?

2026-04-10

What are the disassembly and assembly procedures for a centrifugal blower?

① Remove the blower casing and other components and pipes connected to the casing;

② Disconnect the centrifugal blower fan inlet blade adjusting device and electrical and instrument wiring;

③ Remove the bearing covers, flanges, and bolts at both ends of the centrifugal blower fan main shaft;

④ Remove the centrifugal blower fan coupling;

⑤ Remove the centrifugal blower fan casing;

⑥ Remove the seals from the centrifugal blower fan and shaft ends;

⑦ Lift out the rotor and place it on a saddle-shaped support;

⑧ Remove the lower bearing or bearing of the centrifugal blower fan. Assembly is the reverse of the above procedures.


centrifugal blower fan


Centrifugal blowers play a vital role in our production and daily life, allowing for better ventilation in workplaces. Our environmental quality will be significantly improved. To better ensure the performance of the fans, we will disassemble and reassemble them when problems arise or during regular maintenance. If we don't follow the proper procedures, we might overlook some details, affecting the performance of the centrifugal fans and blowers.


Before disassembling the centrifugal fans and blowers, it is essential to record all parameters and data. It's best to note down areas prone to problems. This will not only make the disassembly process smoother but also ensure that any issues are addressed promptly, preventing any unresolved problems. We will find various labels on the centrifugal fans and blowers, containing a lot of data. We must record these beforehand to prevent damage or loss of this important data during disassembly.


The seal gap should be measured before disassembling the seal. Before disassembling centrifugal blowers, in addition to preparing all necessary tools and materials, for blowers conveying coal gas or other harmful gases, the inlet and outlet valves must be tightly closed, and blind flanges should be installed if necessary. If the inlet and outlet are downward facing, water can be poured into the pipes to create a water seal. The water level should be high enough to prevent harmful gases from leaking into the workplace. After disassembling the centrifugal blowers, the disassembled parts should be cleaned to remove dirt and grime. Although these issues seem simple, we have found that many users overlook these details during actual operation. While we may not notice any immediate impact, prolonged use of industrial centrifugal blowers will lead to the recurrence of deficiencies and problems from the initial disassembly and installation.


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