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

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HC-251S Rotary Air Blower for sewage treatment aeration 0.55KW DN20

HC-251S Rotary Air Blower for sewage treatment aeration 0.55KW DN20

  • HC-251S Rotary Air Blower for sewage treatment aeration 0.55KW DN20
  • HC-251S Rotary Air Blower for sewage treatment aeration 0.55KW DN20
HC-251S Rotary Air Blower for sewage treatment aeration 0.55KW DN20
Product Details:
Place of Origin: China
Brand Name: TOHIN
Certification: ISO9001/ISO14001
Model Number: HC-251S
Payment & Shipping Terms:
Minimum Order Quantity: 1 set
Price: Negotiation
Packaging Details: Export standard wooden case
Delivery Time: 5-20 working days, depends on order amount and specification
Payment Terms: L/C, T/T
Supply Ability: 1000 SETS per month
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Detailed Product Description
Air Capacity: 0.31-0.28m3/min Discharge Differential Pressure: 10-50KPA
Motor Power: 1.5KW Discharge Bore: DN20(3/4”)
Driven Type: Belt And Pulley Main Materials: Cast Iron
Technology Of: Tohin Shoji Co., Ltd. Noise: 55dB(A)
High Light:

industrial air blower


Aeration blower

HC-251S Rotary Air Blower  for sewage treatment aeration, 0.55KW



About HC-501S


Technology of HC blower is of JAPAN TOHIN SHOJI CO., LTD. This kind of blower is widely used for aeration in sewage treatment. Due to its reliability and excellent performance, HC blower has enjoyed good reputation from many customers over the whole world.




Air capacity






Discharge differential pressure


20 KPA


40 KPA


Rotary speed


Motor type


380/400/415/440V, 3PHASES, 50/60HZ

Motor brand

Standard: Siemens Beide or Wannan motor

Siemens and ABB motor for your option

N.W. of blower package


Packing size Approx.

0.91*0.51*0.88m (length*width*height)




  • Agitation and aeration for plating tanks and waste water
  • Air supplier for plastic welding and blowing
  • For mist spray of burner and in glass industry and others
  • Wastewater aeration
  • Mixing and aerating of hospital and laboratory waste products
  • Conveying papers in offset printing operations



  • Compact, energy consumption. (It adopts the principle of air compressed by revolving movement. Therefore, although compact, the rotary  blowers display their powerful discharged capacity, low noise, little energy consumption that can't be surpassed by other competitors.)


  • Stable operation, simple installation. (In the case of small types, the blower can be conveniently installed and mere vibration produced if placed correctly, not requiring any other anti-vibration device.)


  • Resisting load changes, securing fixed air flow rate (For instance, if a rotary blower is used for sanitary treatment in the aeration tank, almost no air flow rate is decreased even if load becomes large due to the change in the pressure inside tank.)


  • Air chamber equipped for dispersing air smoothly. (All models are provided with an air chamber, resulting in being free from air pulsation and air dispersed smoothly.


  • performance (All parts of the blowers are made of good material and are fine designed and manufactured. It is durable in use and free of trouble and deterioration of performance after a long time use.)


  • Noise is very low suitable for sewage treatment of residence residential area.



Working Principle


The blower is so designed and constructed that air is sucked, compressed and discharged  repeatedly while vanes protruding from the grooves of rotor are coming in and out by revolution of a rotor (rotating body)   set eccentrically inside the cylinder diameter. A minimum required quantity of oil is dropped to an oil dropping nozzle, then dropped into the cylinder always while operating in order to make lubrication for the purpose of preventing heat and noise from generating. In the same time, there's no circumfluence.



Standard supply of scope


HC Rotary blower's structure is exquisite. It mainly includes motor, air filter, blower body, air chamber, base (and oil tank) and oil dropping nozzle.


HC-251S Rotary Air Blower for sewage treatment aeration 0.55KW DN20 0

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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