Principle of gas-liquid separation technology of capillary action of stainless steel vacuum pump: liquid water will spread on the surface of hydrophilic material. If hydrophilic material is used to make porous structure (there is a gap between the holes), this porous structure will become a special channel for liquid water just like many capillaries. Similarly, the porous structure made of hydrophobic materials will become a special channel for gas. In this way, the hydrophilic / hydrophobic properties of the material are used to realize gas-liquid separation.
The quality of stainless steel vacuum pump depends on its mechanical structure and oil quality. When using stainless steel vacuum pump, it must be well protected. If the volatile organic solvent is distilled, the organic solvent will be absorbed by the oil. As a result, the vapor pressure will be increased, thus reducing the evacuation efficiency. If it is an acid gas, it will corrode the oil pump. If it is water vapor, it will make the oil into emulsion and damage the stainless steel vacuum pump.
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