Double Rotors Screw 24.2m3/Min Rotary Air Blower

About Screw Blower

The screw blower achieves internal compression during the air transportation in the cavity, so the screw blower has most of the advantages of traditional blowers, and at the same time has higher efficiency.

The process of air transportation and compression is continuous and progressive, so the airflow pulsation is lower, and the exhaust noise and temperature control are better than traditional blowers.

As a new type of rotary blower developed in recent years, screw blowers have begun to be applied in aeration, gas-water back-washing, oxidative de-sulfurization, fluidization/homogenization process, and pneumatic conveying due to their simple structure, stability, energy saving and low noise.

Performace Data

Dimension and other data

Composition

The screw blower is composed of blower enclosure, blower main body, motor, air filter, silencer, an oil pump tank and oil filter.

As the core component of the screw blower, the structure of the blower main body directly determines the blower’s performance. The main body is composed of casing, screw rotors, gear box, bearings, shaft seals, ect.

Working Principle

The operating principle of the screw blower is that two parallel female and male rotors mesh with each other in the "∞"-shaped cylinder to form a working volume. Through the synchronous gear, the rotor rotates at high speed in the opposite direction, and the working volume changes periodically as the rotor rotates, realizing air compression during air transportation. The working cycle of screw blower can be divided into three processes: suction, compression and exhaust. The cycle process is as follows:

1. Suction process

Picture ① : The air enters the volume between the teeth of the rotor through the suction port. As the rotor rotates, the volume between the teeth continuously expands.

Picture ② : When the volume between the teeth reaches the maximum, the volume between the teeth is disconnected from the suction port and the suction process ends.

2. Compression process

Picture ③: during compressing

3. Exhaust process

Picture ④: After the inter-tooth volume is connected to the exhaust port, the exhaust process begins. During the rotation of the rotor, the volume between the teeth continuously decreases, sending the compressed air to the exhaust pipe. This process continues until the volume reaches designed data.

Features:

Low energy consumption

By adopting the principle of thermal adiabatic compression, the oil-free screw blower’s total efficiency is higher than 75%, and is 20%-35% higher than traditional blowers. Also it is featured with higher exhaust pressure and lower pressure pulse.

Low noise

The aerodynamic noise of the screw rotor is very small, and the output is stable, which eliminates the sudden release of internal air. The wave-shaped inlet and the vent minimize the airflow fluctuations, and the noise of the blower is less than that of the traditional type.

Intelligent Control

Intelligent PLC control, remote control and multiple communication modes are available, which is convenient for operation and maintenance.

Low cost

The optimized structural design enables less energy consumption and ensures the durability of the product. At the same time, the unit of light wight (load) runs smoothly without special infrastructure so that save cost for customers.

B-Tohin Machine (Jiangsu) Co., Ltd. is a foreign invested enterprise established in 1994. It is located at Yixing Industrial Park for Environmental Science & Technology, one of State High-Technology Development Zones. With total registered capital of RMB 120 million and total investment of RMB 160 million B-Tohin is engaged in production and sales of HC blower, BK and YU Roots blowers,air compressor blower,screw blower, anti-corrosion and anti-explosion stainless steel Roots blowers, gear speed-up centrifugal blower, multi-stage centrifugal blowers and in the sales of other supporting products for water treatment in environmental protection, such as water pump (YU, WQ submersible pump, YYOW split case pump), mixer, dewatering machine, etc. By the purchase of a new building of 26000 m2 area in Yixing Economic Development Zone in 2015, the expansion of production scale is supported.

B-Tohin’s products have been widely used in various industries, including water treatment, construction material and cement manufacture, chemical industry, electricity, petroleum, steel, metallurgy, mine, food convey lines, etc., enjoying a good reputation among customers both in the overseas and domestic market.

In the company’s Research and Development Center, a technical innovation team composed of professor level Senior Engineers, Doctors, Masters and many undergraduates, is aiming at the service for environmental protection by tracing and developing the products of high level.

B-Tohin has made great investment in introducing CNC, full-automatic digital control lathes, CMM and other advanced equipment to ensure good quality. A complete set of advanced horizontal OKUMA CNC was introduced specially for the fine finish machining of blower cylinders and end-covers; a NC machine was imported for the processing of blower parts; a Taiwan Dahlih-made CNC was equipped for machining the parts of middle and large size blowers; and several back-forth curve machining planers were introduced for solving the problem of shapers’ precision problem. This kind of planer ranks among the advanced level in China which is specially designed for curve machining of blower rotors. In the beginning of 2015, we cooperated with Testing Laboratory of Shenyang Blower Research Institute (Quality Supervision & Inspection Center for Blowers of China Machinery Industry), and a whole set of blower performance test system was designed for us according to the Roots Blower Industry Standard by the Laboratory.

Passed the certification of ISO9001 & ISO 14001:2400, the company has been nominated as “High & New-tech Enterprises of Jiangsu Province” and “Pneumatic Technology Research Center of Jiangsu Province”. In successive seven years, B-Tohin has been honored as “Favorite Brand of Users in Water Treatment Industry” and “Main Enterprise in Chinese Roots Blower Industry” in 2014, it has been awarded the title of “2014 Top 10 Brands in Chinese Water Industry” on website.

Being a member of National Commission for Pneumatic Conveying and National Technical Committee of Standardization of Blower, and one of the sponsors of National Union of Environmental Protection Equipment Brands, B-Tohin Machine has been an excellent and famous enterprise in environmental protection blower industry.

B-Tohin’s tenet of “Eternal pursuit of improving, eternal promise of satisfying customers” and spirit of “Together with Heat” are always kept in every employee’s mind and in every step of company management. All the honors belong to the past only, people of B-Tohin will make every endeavor to design and manufacture more perfect products for contributing more to the related industries both at home and abroad and to our domestic machinery industry.