Structural Characteristics of Vacuum Pumps
A vacuum pump is a device or equipment that uses mechanical, physical, chemical, or physicochemical methods to evacuate a closed container to obtain a vacuum. In layman's terms, a vacuum pump is a device that improves, creates, and maintains a vacuum in a closed space using various methods.
According to the working principle of vacuum pumps, vacuum pumps can basically be divided into two types: gas capture pumps and gas transfer pumps. They are widely used in industries such as metallurgy, chemical, food, and electronic coating.
The inlet and outlet of the vertical structure are arranged horizontally, making assembly and pipeline connection convenient. However, the pump's center of gravity is higher, and stability is poor at high speeds, so this type is mostly used for small pumps.
For horizontal pumps, the inlet is on the top and the outlet is on the bottom. Sometimes, for the convenience of pipeline installation and connection in the vacuum system, the outlet can be led out horizontally, meaning the inlet and outlet directions are perpendicular to each other. At this time, the outlet can be opened from either the left or right direction; one end is connected to the exhaust pipeline, and the other end is blocked or connected to a bypass valve. This pump structure has a low center of gravity and good stability at high speeds. Generally, large and medium-sized pumps mostly adopt this structure.
The two rotor shafts of the pump are installed perpendicular to the horizontal plane. This structure makes it easy to control assembly clearances, convenient for rotor assembly, and the pump occupies a small area. However, the pump's center of gravity is higher, gear disassembly and assembly are inconvenient, and the lubrication mechanism is relatively complex.
