The main application of a suction blower, the blower impeller cycloid impeller, high volumetric efficiency dust blower, internal leakage of small, low energy consumption. 2, casing, impeller, wallboard, siding, gear box made of high strength gray cast iron (HT250) manufactured, imported resin sand production line imported CNC machining. 3, transmission gear material used 20CrMo alloy steel, carburizing, quenching, grinding blower, accuracy rating of level GB10095-88 5, tooth surface hardness HRC56 ~ 62. Working principle: positive displacement blower fan, air volume delivered and the number of revolutions is proportional clover impeller rotation once every two impellers made three times the suction and discharge, compared with two leaf type oxygen blower gas pulsation is reduced, a small load change, high mechanical strength, low noise, vibration small. In phase two flat line shaft is provided with two trefoil Roots blower aeration impeller, and always maintain a slight gap between the wheel and oval chassis and each wheel bore surface three, since the impeller in opposite directions of uniform rotation, so that the impeller housing and surrounded by a certain amount of gas delivered to the suction side of the discharge side. Each branch of the impeller always maintain the correct phase from the synchronizing gear, will not touch each other and, therefore, can be high-speed, no internal lubrication, simple structure, stable operation, stable performance, adapt to a variety of uses, it has been used in a wide range of fields. Aeration blower, Zhucheng East Han Machinery Co., Ltd., Shenyang blower provided by Han Machinery Co., Ltd. Zhucheng East. Zhucheng East Han Machinery Co., Ltd. (www.dhlcfj.com) (www.dhlcfj.com) is an industry leader in Shandong Weifang, fans, ventilation equipment, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. John in Zhucheng East Machinery Co., Ltd. leadership with the staff warmly welcome all inquiries negotiations to create Zhucheng East Han Machinery Co., Ltd. a better future.