TYPE OF OIL DIFFUSION PUMP

The diffusion pump is called diffusion-type steam flow pump, and it is one of the steam flow pumps. Although there are many kinds of pump fluid, most of them are low saturated vapor pressure oil. As working liquid said by an oil diffusion pump oil diffusion pump, with mercury diffusion pump fluid called mercury diffusion pumps, oil diffusion pump is most commonly used, diffusion pump ensures the former level in 10-2 ~ 10-3 of vacuum conditions to be able to do the work well. Vacuum-pump-in-vacuum-distillation

A mechanical pump is usually used as a fore - stage pump. Ordinary diffusion pump can get 10-4 ~ 10 9 ultimate pressure, if the baffle or liquid nitrogen frozen cold trap, and to bake to gas containers, can get 10-8 to 10-11 of the ultra high vacuum, if the pump is well designed, coupled with the removal of oil steam reflux and strict measures such as permanent gas pollution sources, and then took in more than 10-14 supporting high vacuum can be reached.Type-of-oil-diffusion-pump

Diffusion pump's main advantage is: extraction capacity big, wide speed range, for various gases including inert gas (e.g., neon, helium, etc.) have the same pumping speed, this is unmatched by any other kind of pump; Moreover compared with other high vacuum or ultra high vacuum to obtain equipment, lower unit cost needed for pumping speed (no need to be very expensive, such as cryogenic pump condensing agent), simple structure, no mechanical rotation, easy to operate and can be recycled repeatedly, easy to maintain, long service life and is very easy to obtain high vacuum.
The-application-of-water-ring-vacuum-pump-in-coal-mine-industry