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Multistage Centrifugal Fan - Series C Casting Vacuum Pump

Series C casting vacuum pump, based on the technology of welding multistage low-speed vacuum pump , designed and developed by ZIBO DECENT MACHINERY CO.,LTD, is a new generation high-efficiency product, gathering some patented technologies and longtime blower experiences of design and fabrication, which can satisfy users appeal.

Positive pressure multistage centrifugal fan:

Inlet flow: 1,200-55,000m³/h
Outlet pressure: 1000-12000 water column

Negative pressure multistage centrifugal fan:
Flow: 1,200-55,000m³/h Vacuum degree: -20 to -50kpa

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  • 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 Multistage Centrifugal Fan - Series C Casting Vacuum Pump Multistage Centrifugal Fan - Series C Casting Vacuum Pump
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

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

Multistage Centrifugal Fan - Series C Casting Vacuum Pump
Pneumatic Conveying Systems
Cement and Mining Industries
Waste Management
Power Generation
Plastic and Rubber Industry
Food and Pharmaceutical Industries
Textile Industry
Material Drying
Agricultural Applications
Material Cooling

Multistage Centrifugal Fan Test for Thailand Client Multistage Centrifugal Fan Laboratory Test Multi-Stage Centrifugal Fan Shipping & Packing Video
Multi-Stage Centrifugal Fan Performance Test Factory Tour Multi-Stage Centrifugal Fan Product Showcase
   
Multi-Stage Centrifugal Fan Workshop Tour    

FAQ
Q: If we have our own equipment so may need only the blower motor frame not fully set equipment, is that ok?
A: Yes, of course. Our standard supply scope list is fan body, motor, internal base, inlet filter silencer, inlet manual battery valve, outlet pressure gauge, anchor bolt, nuts, Axle temperature digital display acousto-optic alarm, Local control cabinet, check valve, pressure transmitters, matching flange. We can match as customer’s requirements.
Q: What types of tests can DECENT MACHINERY perform?
A: We offer a wide range of testing services including: airflow testing, pressure testing, speed testing, temperature testing (front axis, rear axis, exhaust, and intake temperatures), as well as airflow and pressure testing at different frequencies. Additionally, we conduct noise testing, voltage testing, current testing, and automatic shutdown testing for current overload.
Q: What is DECENT MACHINERY's minimum noise level?
A: By utilizing specially designed soundproof chambers, we can achieve a minimum noise level of 65dB. This environment ensures a relatively quiet working condition, providing comfort and reducing noise disturbances during equipment operation.
Q: Do you have a preventive maintenance plan like when to check or change oil, barring seal coupling vibration?
A: Yes, we will provide one manual book for correct operation and maintenance. At the end of the manual book, there will be one manual schedule sheet for your reference.
Q: As now USD is a super high rate so can we or our main contractor buy in RMB?
A: Absolutely, we can accept payment in RMB.
Q: Is installation work can be provided by your side?
A: Sure, we have an installation team for the installation work. And also we have many customers that in your local can provide more convenient and timely service for you.
Q: Are you just assembling or also doing OEM&ODM?
A: ZIBO DECENT is a manufacturer specializing in environmental protection equipment. Its main products are vacuum pumps and dehydrators, and it has the capabilities of non-ferrous and black casting, sheet metal processing, control systems, and engineering services. 

The existing building area is more than 15,000 square meters, and the main equipment is a resin sand molding system, intermediate frequency furnace. 

Heat treatment furnace shot blasting machine, CNC vertical lathe, saddle lathe, planer, milling machine, digital boring machine, hydraulic press, hoisting machine, balancing machine, 500KW performance test platform various inspection and testing equipment, etc. All accessories are self-produced and self-provided and can meet the overhaul and maintenance of domestic or imported similar products.

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