A professional manufacturer of three roots blowers

1 BK Type Roots Blower Main Advantage

Optimized lobe curve is adopted for reducing blower's internal leakage, improving blower's efficiency and

reducing running temperature.

After radius-center distance ratio narrowed and shaft's diameter enlarged, no deformation and collision

will occur under higher load pressure as the blower's strength is improved.

Special hollow design of end-cover is used for making bearing cavity separated from gas chamber

relatively,by which reduces the impact of inside high temperature gas on bearing cavity and lowers the

bearing temperature.

Deep groove ball bearing of high precision and low friction factor is selected for lowering operation noise.

In addition, because of larger size bearing matched for enlarged shaft diameter, the bearing's load capacity

is enhanced and its sevice life is extended.

2 Blower Working Principle

Roots blower is acubage 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 discharging air. Compared with two

lobes blower, it is of less air pulses, smaller load change, higher strength, lower noise and vibration.

Two parallel shafts have three lobes each, all the lobes keep small clearance with each other and

housing inside. Every lobes rotation, a certain air will be absorbed at inlet and transferred from the housing

inside surface to blower's discharge 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 characteristics: Simply configuration; running

smoothly; good performance stabilization. It has been widely applied in various industries.

3 Internal Structure Sketch

4 Type and parameter range

5 Purpose

Quality Cpurse: Keeping improving, Satisfy customers.

Quality Goal: Better enterprise, Better products

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.