Send Message
B-Tohin Machine (Jiangsu) Co., Ltd.
B-Tohin Machine (Jiangsu) Co., Ltd.

Professional Manufacturer of Various Kinds of Blowers

Home ProductsThree Lobe Roots Blower

Bkw9020 Three Lobe Roots Blower , Aeration Blowers Wastewater For Long Time

Bkw9020 Three Lobe Roots Blower , Aeration Blowers Wastewater For Long Time

  • Bkw9020 Three Lobe Roots Blower , Aeration Blowers Wastewater For Long Time
  • Bkw9020 Three Lobe Roots Blower , Aeration Blowers Wastewater For Long Time
  • Bkw9020 Three Lobe Roots Blower , Aeration Blowers Wastewater For Long Time
Bkw9020 Three Lobe Roots Blower , Aeration Blowers Wastewater For Long Time
Product Details:
Place of Origin: CHINA
Brand Name: BK
Certification: ISO9001 / ISO14001/CE
Model Number: BKW9020
Payment & Shipping Terms:
Minimum Order Quantity: 1 set
Price: USD 10600- USD16600
Packaging Details: EXPORT WOODEN CASE
Delivery Time: 50 WORK DAYS
Payment Terms: L/C, T/T
Supply Ability: 30 SETS PER MONTH
Contact Now
Detailed Product Description
Name: Three Lobe Roots Blower Air Flow: 25.89m3/Min-73.32m3/Min
Package: Wooden Case Cooling Type: Water
Blower RPM: 700-1500 Voltage: 380V/400V/415V/440V/Customed
Frequency: 50HZ/60HZ Application: Waste Water Treatment
High Light:

long time three lobe roots blower


three lobe wastewater aeration blowers


wastewater aeration blowers three lobe


About BKW
BKW seires Roots Blower inherits most components from BK series, it adopts water cooling in bearing cover, which can reduce the temperature of bearing when working and prolong the longevity, also it has a larger pressure capability.


Model BKW9020
Air capacity 25.89m3/Min-73.32m3/Min
Discharge differential pressure 60-100KPA
Rotary speed 700rpm-1500rpm
Motor type 37KW-280KW
380/400/415/440V, 3PHASES, 50/60HZ
Motor brand Standard: Siemens Beide or Wannan motor
Siemens and ABB motor for your option
Installation type Standard: horizontal type.
Vertical type available for your option
N.W. of blower without motor 1310 kg
Packing size Approx. 2.62*1.78*2.60m (length*width*height)
Features 1. Helical type timing gears for smooth operation
2. Compact, flexibility in installation gives users more choices.
3. Integral structure of impeller and shaft for more stable and smooth operation
4. Adopt imported oil seals made from fluoric rubber with great wear resistance and high-temperature resistance.
5. Low noise, low vibration and energy consumption.


Type Port Dia Speed Inlet airflow(m3/min)and shaft power(KW)at different conditions Cooling Water
60kpa 70kpa 80kpa 90kpa 100kpa
rpm m3/min KW m3/min KW m3/min KW m3/min KW m3/min KW L/min
BKW9020 250(10'') 700 26.99 42.76 25.89 49.62             20
850 35.68 51.93 34.58 60.26            
1000 44.36 61.09 43.26 70.89 42.28 80.68 41.35 90.48 40.42 100.28
1150 53.05 70.26 51.95 81.52 50.97 92.79 50.04 104.05 49.11 115.32
1250 58.84 76.37 57.74 88.61 56.76 100.86 55.83 113.10 54.90 125.35
1400 67.53 85.53 66.43 99.24 65.44 112.96 64.52 126.67 63.59 140.39
1500 73.32 91.64 72.22 106.33 71.24 121.03 70.31 135.72 69.38 150.42

Description of blower parts:

Casing Made of Casting iron HT200
ENDLESS structure adopted for improving efficiency, one-time machined by CNC center with high precision
Rotor (Shaft and impeller) Made of Casting iron QT500
The impeller and shaft is cast as an integral part.
Adopting NC planer for machining to achieve high precision
Gear end bearing Made of GCr15
NSK brand, double-row angular contact ball bearing, capable of supporting axial load
Drive end bearing Made of GCr15
NSK brand, cylindrical roller bearing
Gear Made of 20CrMnTi
Bevel structure for more smoothly running
Oil seal Made of fluoro rubber
bears high temperature and has a longer life.

Working Principle

Roots blower is a cubage blower, and it discharges a fixed amount of air in proportion to its rotation speed. Every rotation, there is two lobes to finish three times absorbing and dischargeing air. Compared with two lobes blower, it is of less air pulses, smaller load change, higher strength, lower noise and vibration.

Two paraller shafts have three lobes each, all the lobes keep small clearance with each other and housing inside. Every lobes rotatiomn, a certain air will be absorbed at inlet and transfeered form the housing inside surface to blower's diacharge port.

Two shafts will be turned by the timing gears, no any touching between lobes, so it can be turned at high speed without any lubrication inside. It has the following chaaracteristics: simply configuration; running smoothly;good performance stabilization. It has been widely applied in various industries.

Contact Details
B-Tohin Machine (Jiangsu) Co., Ltd.

Contact Person: Iris Xu

Tel: +8615301523076

Send your inquiry directly to us
B-Tohin Machine (Jiangsu) Co., Ltd.
No.69 Xijiu Road, Industrial Park for Environmental SCI & TECH, Yixing, Jiangsu,China
Mobile Site Privacy Policy | China Good Quality Three Lobe Roots Blower Supplier. © 2016 - 2024 All Rights Reserved.