Applications of Vacuum Technology

With the rapid advance of vacuum acquisition technology, application of vacuum has expended to all aspects of industry and scientific researches. The wide range of vacuum applications includes low vacuum, medium vacuum, high vacuum, and ultrahigh vacuum applications.

Low Vacuum

Low vacuum utilizes the pressure differential obtained from low (or coarse) vacuum to clamp, lift and transport materials, as well as collection and filtration of dust.

Medium Vacuum

Medium vacuum is usually applied to remove gas or water absorbed or dissolved in materials, also making bulbs, vacuum metallurgy, and insulating heat.

High Vacuum

High vacuum can be used in the situations where there are thermal insulation, electrical insulation and the avoidance of collisions of molecular electronic and ion.
Because its molecular free path is larger than the container linear size, which can also be considered as a special application to vacuum coating in fields of optical, electrical and decorative plating.

Ultrahigh vacuum

It is admitted that the energy transfer in outer space is similar to that in UHV(Ultra High Vacuum), so UHV can make sense for space simulation.

Application Description

With the development of vacuum acquisition technology, its application has expanded to all aspects of industry and scientific researches. Generally speaking, the vacuum application means utilizing of the special physical environment of rarefied gas to accomplish some certain tasks such as manufacturing products or equipment ( like light bulbs, tubes, and accelerators), which requires vacuum in use. However, other tasks (such as vacuum coating, vacuum drying, and vacuum impregnation)only regard vacuum as one step of production and enable the final product to work normally in the atmospheric environment.

Laboratory vacuum filtration

The basic concept of filtration is the separation of the suspension by a porous medium. During operation, the driving force of the filtering operation is the pressure difference between the upstream and the downstream of the filter medium. Under the action of the external force, the liquid in the suspension flows out through the pores of the medium, and the solid particles are trapped, thereby achieving separation.