Clover Roots blower is a dual synchronous compression impeller blower mechanical mine carries oxygen, each with two trefoil rotor bearing, using a pair of synchronized gears, the relative position of the two rotors remain unchanged. Fans empty load test run: (1) a new installation or fan should be overhauled after the load test run; (2) an empty load operation is under the intake, the exhaust valve is fully open conditions put into operation; (3) no abnormal smell or smoke phenomenon and impact or friction sound, vibration radial bearing parts is not greater than 6.3mm / s; (4) the empty load running around 30min ventilation duct blower, as in the case of normal blower, namely can be put into operation with a load, such as the discovery is not operating properly, immediately shut down for inspection, after the exclusion still as empty load operation. Clover Roots blower with high-quality, high life, high efficiency washing Roots blower, it is small, light weight, traffic, low noise, smooth operation, reasonable structure, is a new energy saving products and meet the IS09001: 2008 quality system standards, by the power, building materials, chemical, textile, food, metallurgy, aquaculture, vacuum packaging, mining, pneumatic conveying systems, air separation industries and sewage treatment industries trust and recognition. Food packaging vacuum blower, Zhucheng East Han Machinery Co., blower provided by Zhucheng East Han Machinery Co. 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. In Zhucheng East Han Machinery Co. led the staff warmly welcome all inquiries negotiations to create Zhucheng East Han Machinery Co., a better future.