Contact
Addr:ZhenBei Road, Putuo District, Shanghai, No. 915 (Jinshajiang Junction)
Tel:+86 21 3251 3913
Fax:+86 21 3251 3912
Email:info@yzvacuum.com
Tel:+86 21 3251 3913
Fax:+86 21 3251 3912
Email:info@yzvacuum.com
Oil pump works
Add Time : 2013-11-13 16:32:33 Views : 2405
In the vacuum pump vacuum pump oil , not only as a medium to get , but also on the mechanical friction point lubrication , cooling and sealing.
1 low vapor pressure
This is the most important properties of the oil pump , the vacuum pump requires a high degree , usually with narrow fractions of paraffinic oil , the diffusion pump , a low vapor pressure can also use a silicone oil or other synthetic oils.
2 . Appropriate viscosity and good viscosity-temperature characteristics
Vacuum cavity formed by the exhaust volume changing role requirements should have the right lubricant viscosity and viscosity-temperature characteristics .
3 Good thermal oxidation stability
Vacuum pump to keep the high-speed development , due to the rapid slide friction and pump the oil temperature rise , oil is easily oxidized and decomposed , in particular, are often in a diffusion pump under high temperature environment to work within the system so that the vapor pressure, reducing the degree of vacuum , vacuum pump oil thus requiring good thermal oxidative stability .
4 good corrosion resistance and resistance to emulsification
If inhaled pump corrosive gases will react chemically with the oil , corrosion pump parts ; inhalation of air containing water vapor tends to condense water , causing the vacuum pump oil emulsion and makes metal corrosion , it is required to have good anti- corrosion and anti- emulsification sex .
5 high flash
The main requirements of the vacuum pump does not carry the light components , so as not to affect the saturated vapor pressure of the oil .
6 The lower limit pressure
Vacuum pump oil pressure is important to limit the use of performance indicators to understand the extreme pressure at the lowest vacuum pump ultimate pressure .