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

Professional Manufacturer of Various Kinds of Blowers

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Blue Rotary Air Screw Blower Variable Frequency

Blue Rotary Air Screw Blower Variable Frequency

  • Blue Rotary Air Screw Blower Variable Frequency
  • Blue Rotary Air Screw Blower Variable Frequency
Blue Rotary Air Screw Blower Variable Frequency
Product Details:
Place of Origin: CHINA
Brand Name: B-TOHIN
Certification: ISO9001 / ISO14001
Model Number: BLG115RA
Payment & Shipping Terms:
Minimum Order Quantity: 1 set
Packaging Details: EXPORT WOODEN CASE
Delivery Time: 30 WORKING DAYS
Payment Terms: L/C, T/T
Supply Ability: 30 SETS PER MONTH
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Detailed Product Description
Description: Screw Blower BLG115RA Pressure: 40-150Kpa
Air Flow: 3.0m3/Min-7.3m3/Min Package: Wooden Case
Shaft Power: 5.4kw-23kw Cooling Type: Oil
High Light:

7.3m3/Min rotary screw blower


variable frequency rotary screw blower


blue rotary air blower

Screw Blower

Working Principle 

1. Suction starts
2. Suction ends and compression begins
3. During compression
4. Compression ends and air discharge begins
Blue Rotary Air Screw Blower Variable Frequency 0
Energy saving
Thanks to the adiabatic compression principle, the total efficiency of oil-free screw blower exceeds 75%, saving more than 20%-35% energy than the Roots blower. The blower is featured with higher discharge pressure and lower pressure pulse.
Low noise
The aerodynamic noise of the screw rotor is very small, and the smooth output eliminates the sudden release of internal air, and the wavy inlet and air outlet minimize airflow fluctuations, so the noise is less than that of traditional blowers.
Intelligent PLC control, remote control and various communication methods are convenient for operation and management
Low cost
The optimized structural design enables the durability of the product with less consumption. Also no special infrastructure is required due to the smooth running and small load of the unit.

Blue Rotary Air Screw Blower Variable Frequency 1
Description of blower parts

Shaft screw blower main body

high efficiency profile rotor design

● adopt synchronous gear and drive gear of national standard precision grade 5

● Innovative bearing arrangement of screw, fixed radial bearing and thrust bearing adopted to increase the service life

● oil and gas separation between compression chamber and lubricating chamber realized by Labyrinth seal + carbon ring seal, ensuring the discharge of pure air.

Blue Rotary Air Screw Blower Variable Frequency 2

Permanent magnet motor

Magnetic properties, no external energy is required to maintain its magnetic field
● High efficiency and energy saving, the average efficiency of 75%- 80% can be achieved in the speed range of 1500-6000r/min.
● High accuracy in voltage regulation can prolong the battery’s service life.
● No brushes, no collector rings, and no sparks generated during operation, so there is no wireless interference, which greatly improves the operation performance.

Blue Rotary Air Screw Blower Variable Frequency 3
Oil lubrication system

More reliable forced circulation lubrication cooling system separately designed
● advanced oil circuit system composed of oil pump, oil cooling and oil filter
● low oil temperature enables longer service life of bearings and gears

Blue Rotary Air Screw Blower Variable Frequency 4
Operation control system

Integrated station monitoring instrument, signal control module, inverter, touch screen, etc., no additional installation required
● the selection of driving components is optimized, and parameter settings can accurately achieve higher efficiency
● Complete automatic control and protection functions, and realize online control and remote control at the same time
● A variety of operating modes, enabling users to adjust the operation to be more power-saving mode according to the changes in working conditions

Blue Rotary Air Screw Blower Variable Frequency 5

Supply Scope

Items Description Unit Qty. Remarks
1 Blower main body set 1  
2 Motor set 1 VFD
3 Cooling fan set 1  
4 Heat Exchanger set 1  
5 Air filter set 1  
6 Oil filter set 1  
7 Pressure valve set 1  
8 Oil pump set 1  
9 Connection pipe pcs 1  
10 Contactor set 1 Siemens or Schneider
11 Inverter set 1 Taiwan QMA
12 Enclosure set 1  
13 Check valve set 1  
14 Stainless steel expansion joint set 1  
15 Relief valve set 1  

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
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