Roots vacuum pump (referred to as: Roots pump) is a pump built with two opposite directions lobed rotor synchronous rotation between the rotor, the rotor and the pump housing there is a small gap between the walls and do not touch a displacement pumps. Roots vacuum in the oil, chemicals, plastics, pesticides, turbine rotor balancing, aerospace simulation and other devices have been long-running test, so it should be vigorously promoted and applied in the country. But also widely used in petroleum, chemical, metallurgy, textile and other industries. Vacuum accessories for use in vacuum noise control, vacuum muffler. Two Roots vacuum pump rotor layout how to determine the overall structure of the pump. The overall structural arrangement of domestic and foreign Roots vacuum pump are generally three options: 1 vertical: horizontal axis of the two rotors installed Roots vacuum pump offer, but a plane perpendicular to the horizontal axis of the rotor consisting of two, such a configuration, the pump intake and exhaust ports were arranged horizontally, assembly and connecting pipes are more convenient. But its drawback is that the center of gravity of the pump is too high, poor stability at high speeds, so in addition to the small size of the Roots vacuum pump outside the direct, not too much use of this structure type. 2. Horizontal: axis of the two rotors mounted horizontally, the horizontal plane formed of two rotor axis, such a construction the pump inlet at the top of the pump, the exhaust port in the bottom of the pump (also with this opposite). Lower exhaust port usually pick out the horizontal direction, so the intake and exhaust direction is perpendicular to each other. An exhaust port connected to the opening tee in two directions, one end of the exhaust pipe, the other end of the dead, or use the bypass valve connection. Feature of this structure is the low center of gravity, good stability at high speeds. Domestic and medium-sized pump more of this structure type. 3. Vertical shaft: Some foreign rotor axis and two horizontal Roots pump installed vertically. This assembly gap structure is easy to control, easy to assemble rotor Roots vacuum use, small footprint, but other gear transmission assembly and disassembly inconvenience lubricating device is also more complicated. Roots vacuum use, Zhucheng East Han Machinery Co., Roots vacuum provided by Zhucheng East Han Machinery Co. Zhucheng East Han Machinery Co., Ltd. (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.