The arrangement structure of the pump body of the vacuum pump determines the overall structure of the pump.
The intake and exhaust ports of the vertical structure are arranged horizontally, making it easier to assemble and connect the pipelines. However, the pump has a high center of gravity and poor stability during high-speed operation, so this type is mostly used for small pumps.
The intake port of the horizontal pump 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 pipes, 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 both left and right directions. Except for one end of the exhaust pipe, the other end is blocked or connected to a 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 pump are installed perpendicular to the horizontal plane. The assembly gap of this structure is easy to control, the rotor is easy to assemble, and the pump has a small footprint. However, the pump has a high center of gravity and inconvenient disassembly and assembly of gears, and the lubrication mechanism is relatively complicated.
