Some knowledge points of vacuum pump group
Vacuum pump unitRefers to the device or equipment that uses mechanical, physical, chemical or physical chemical methods to vacuum the evacuated container to obtain vacuum. Generally speaking,Vacuum pump unitIt is a device that improves, generates and maintains a vacuum in an enclosed space by various methods.
Due to the wide range of working pressures involved in the vacuum application sector, any typeVacuum pump unitare not fully applicable to all working pressure ranges, different typesVacuum pump unitIt can only be used according to different working pressure ranges and different working requirements. In order to facilitate the use and the needs of various vacuum processes, variousVacuum pump unitSometimes it is combined according to its performance requirements and applied in the form of units.
With the development of vacuum applications, a varietyVacuum pump unitIts pumping speed has increased from tens of liters per second to hundreds of thousands and millions of liters per second. With the increasing demand for the application pressure range of vacuum technology in the field of production and scientific research, in order to meet the needs of the production and scientific research process, most of them are made up of severalVacuum pump unitcomposedVacuum pump unitThe system requires common pumping.
Commonly usedVacuum pump unitThere are: dry screwVacuum pump unitWater ring pump, reciprocating pump, slide valve pump, rotary vane pump, Roots pump, diffusion pump, etc. These pumps are essential main pumps in the application of vacuum technology in various industries of our national economy. In recent years, with the sustained and rapid development of China's economy, andVacuum pump unitThe related downstream application industry maintained a rapid growth momentum. At the same time, inVacuum pump unitDriven by factors such as the continuous expansion of application fields, China'sVacuum pump unitThe industry has achieved sustained, stable and rapid development.
Vacuum pump unitThe layout of the pump body determines the overall structure of the pump:1) Vertical structure: The inlet and outlet are arranged horizontally to facilitate the assembly and connection of the pipeline. 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; 2) Horizontal structure: the inlet of the pump faces upward and the outlet faces downward. 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 intake and exhaust directions are perpendicular to each other. At this time, the exhaust port can be opened from the left or right direction, and the other end is blocked or connected to a bypass valve other than one end of the exhaust pipe. The pump has a low center of gravity and good high-speed stability. Generally large and medium-sized pumps use this structure. The two rotor shafts of the pump are installed perpendicular to the horizontal plane. With this structure, the assembly gap is easy to control, the rotor is convenient to assemble, and the pump occupies a small area. However, the center of gravity of the pump is high, the gear is inconvenient to disassemble, and the lubrication mechanism is more complicated.