• 30% lighter than the same type of blower.
• The radial vibration speed of the vacuum pump bearing seat is less than or equal to 4mm/s
• Noise lower than 65dB(A).
• High-frequency noise transmission distance of fewer than 20 meters.
• The rotor adopts three-dimensional flow, the efficiency is as high as 90%.
• Easy maintenance, no need to disassemble the whole machine.
• Oil-free machinery prolongs the life of the aeration system.
• No mechanical friction, which reduces noise and ensures service life.

Comparison Table
Type	Turbo Blower	Multistage Centrifugal Blower
Outline
Efficiency%	It can achieve energy saving up to 30% and improve operating efficiency up to 80%.
Maintenance costs	Low	High
Noise Level	Lower than 80dB	80-90dB
Reliable and durable	No wearing parts, very reliable and durable	Balance disc structure improves the operating conditions of fan bearings and extends the service life of bearings
Energy saving cases
Same Working Condition
Type	Turbo Blower	Multistage Centrifugal Blower
Power(kw)	75	110
Running Time	24hr*365days
Electricity consumption/day	1800kwh	2640kwh
Conclusion	Annual electricity savings of approximately 300,000 kWh for a turbo blower, highlighting a pronounced enhancement in energy efficiency.

Multistage Centrifugal Air Blower Construction: The main body of the multistage centrifugal air blower is constructed from a cast housing, which consists of an inlet casing, an outlet casing, an intermediate casing, and impellers. Typically, based on the customer's requirements for flow and pressure, the intermediate casings and impellers are arranged in series to form a 2 to 8-stage pressure-boosting multistage centrifugal blower. For special customers, the arrangement can extend to 10 stages, with a maximum positive pressure increase of up to 110KPa. The current models can cover a flow range from 15 to 9000m³/min.

Baffle Rings: The multistage centrifugal air blower features a scientifically designed return flow device and guide vanes, with an expansion design in the casing that effectively enhances blower efficiency. A contactless labyrinth seal is employed to prevent leakage, ensuring that the bearing lubricant remains uncontaminated.

Impellers: Utilizing advanced quasi-three-dimensional (triple flow) design, the multistage centrifugal blower's operational efficiency is significantly improved. The impellers undergo overspeed testing to guarantee their mechanical performance, with a dynamic balance quality level exceeding the national standard of Grade G 2.5. They are tested according to Grade G1.0 requirements to ensure mechanical performance. The actual mechanical vibration during operation is around 2.0mm/s, which is significantly less than the national standard of 4.0mm/s.

Balancing Disk: An axial force balancing device (balancing disk) is equipped at the shaft end of the multistage centrifugal air blower, which substantially reduces axial thrust and wear. This maximizes the blower's efficiency, improves its performance by 3 to 5 percentage points compared to other brands, and extends the blower's lifespan by more than 10%.

Bearings: The multistage centrifugal air blower employs SKF bearings, with a lubrication method of oil splash lubrication. Both the front and rear bearings are independently suspended outside the casing and are isolated from the internal flow path, ensuring no oil or gas is generated during operation, thus causing no adverse effects on the pipeline system or aeration heads.

Temperature monitoring: Temperature monitoring instruments are installed on both the driving and non-driving end bearing housings to monitor the bearing temperature parameters in real-time, which can be displayed on the local control cabinet or the user's control system. The control system provides effective protection to the bearings based on temperature parameters to prevent damage.

Couplings: The motor and the multistage centrifugal air blower's power transmission utilize a JM series flexible diaphragm coupling, which can transmit a torque of at least 1.5 times greater than the motor's torque. The coupling is equipped with corresponding protective devices to ensure the safety of the equipment and personnel.

Labyrinth Seal + Carbon Ring Seal: The standard combination of a contactless, wear-free labyrinth seal and a carbon ring auxiliary seal is made from load-bearing materials. It is reliable, maintenance-free, cost-effective, and has a small gap, making it particularly suitable for air transportation in multistage centrifugal blowers.
 

Multistage Centrifugal Fan Accessories

Inlet Filter Silencer/Outlet muffler	Pressure Transmitters	Inlet Manual Butterfly Valve	Electric Discharge Butterfly Valve	Bearing Temperature Gauge
Inlet Metal Expansion Joint Outlet Metal Expansion Joint	Check Valve	Outlet Tee	Controller	Stainless Steel Pressure Gauge
Temperature Probe Platinum  Thermal Resistance	Anchor Bolts	Nuts	Local Control Cabinet	Matching Flange