Positive displacement blower fan, who between air volume delivered and the number of revolutions is proportional to the impeller end and front cover and fan impeller fan always keep a slight gap, driven by the timing gears of wind from the fan housing inlet rim transporting the body to the side wall of the discharge. Here are some of its requirements: 1, the transmission medium inlet temperature is not higher than 40 ℃. 2, the transmission medium particle content of not more than 100mg / m3, maximum particle size must not exceed the minimum work space was half. 3, use may not get ratings boost boost value exceeds a predetermined signage. 4, the temperature should not be higher than the bearing portion 95 ℃. 5, the fuel tank with ordinary oil lubricated high pressure blower, oil temperature should be no higher than 65 ℃. 6, when the boost △ P ≥ 49kPa, cooling water must be used. Roots blower ◆ Bearing 1. Design of bearing can guarantee the same time at maximum speed, pressure and temperature conditions blower, life expectancy of at least 100,000 hours (to ABMA standards). 2. In order to facilitate future maintenance and replacement of bearings, bearing chamber labyrinth seal is provided to prevent foreign matter from entering the bearing chamber housing is made of cast iron HT250. 3. Bearing Japanese NSK bearings. Xining Roots blower, Zhucheng East Han Machinery Co., energy efficient blower provided by Han Machinery Co., Ltd. Zhucheng East. Xining Roots blower, Zhucheng East Han Machinery Co., energy efficient blower is Zhucheng East Han Machinery Co., Ltd. (www.dhlcfj.com) (www.dhlcfj.com) this year introduced a new upgrade, the above picture is for reference, please call Tel picture on this page or to obtain the latest information, contact: Mr. Wang.