DIP3000 Laibao diffusion pump specialized vacuum pump oil

DIP3000 Laibao diffusion pump specialized vacuum pump oil

The function and performance requirements of vacuum pump oil

The pump oil of the oil sealed rotary vacuum pump must meet the relevant requirements. As an operating medium, pump oil plays the following important roles in vacuum pumps: sealing - preventing atmosphere from entering the exhaust valve, with relative moving parts

Gap sealing between the rotor and stator, rotor blades and rotor slots, etc. Lubrication - Lubrication between relative moving parts to reduce wear.

Cooling - Oil circulates between the pump and the oil tank, dissipating heat and cooling.

Wrapping - Wrapping dust or other particles generated by wear and tear in oil to reduce wear and tear damage.

Protection - Form a protective oil film to prevent water and chemical vapor condensation from corroding the internal components of the pump.

Performance requirements for vacuum pump oil:

At high temperatures, the saturated vapor pressure should be low and the volatile components should be minimal. The water content and water absorption.

It should have a certain viscosity and a small temperature variation (smooth viscosity temperature rise curve). Good lubrication performance and excellent crack resistance under mechanical stress. Corrosion resistance, oxidation resistance, and stable chemical properties.

For most applications, Leybol vacuum pumps use Leybol brand standard mineral oil-based oil, with the oil grade LVO 1XX, which has suitable chemical stability, thermal stability, hydrolysis resistance, and compatibility with sealing materials

Very good sex.

For some special applications, some weaknesses of standard oil products are manifested as poor stability at high temperatures.

The inertness of chemical reactions (acids, bases, halogens) is poor. The inertness is poor when encountering strong oxidants (oxygen).

Poor solubility for non-polar substances (wax, grease).

Poor solubility for polar substances (oligomers, resins, decomposition products, especially crystals) and polymers.

Therefore, in special applications, some special lubricants suitable for the pump can be used as working fluid, or additives can be added into the pump oil to enhance the performance of a certain aspect

However, it should be noted that additives may cause the vacuum performance of the pump oil to not reach the desired value, such as a decrease in vacuum degree, or even a reaction with the exhaust gas. Therefore, if using verified oil products, it may cause frequent oil changes

Excessive, reduced vacuum performance, precipitation caused by oil reaction, and even damage to the pump.

DIP3000 Laibao diffusion pump specialized vacuum pump oil