Roots Pump Factory Pump Overall Structure Type

　　The arrangement of the pump body of the Roots vacuum pump determines the overall structure of the pump. At present, the overall structure of the Roots vacuum pump of the Roots pump factory at home and abroad has roughly three types:

　　The vertical structure of the Roots pump factory has the horizontal setting of the intake and exhaust ports, which is convenient for assembly and connection of pipelines. However, the center of gravity of the pump is high, and the stability is poor at high speed, so this type is mostly used for small pumps.

　　The air inlet of the horizontal pump of the Roots pump factory is on the top and the exhaust port is on the bottom. Sometimes in order to facilitate the installation and connection of the vacuum system pipeline, the exhaust port can be connected from the horizontal direction, that is, the inlet and exhaust directions are perpendicular to each other. At this time, the exhaust port can be opened from the left or right direction. Except for one end of the exhaust pipe, the other end is blocked or connected to the bypass valve. This kind of pump has a low center of gravity and good stability during high-speed operation. Generally, large and medium-sized pumps use this structure.

　　The two rotor shafts of the Roots Pump Works pump are installed perpendicular to the horizontal plane. The assembly gap of this structure is easy to control, the rotor assembly is convenient, and the pump occupies a small area. However, the center of gravity of the pump is high, the disassembly and assembly of the gear is inconvenient, and the lubrication mechanism is relatively complicated. Only found in foreign products.