Vacuum pump refers to the device or equipment that uses mechanical, physical, chemical or physicochemical methods to extract air from the pumped container to obtain vacuum. Generally speaking, vacuum pump is a device that uses various methods to improve, generate and maintain vacuum in a closed space. The oil emulsion ring introduced in this paper is an important part of vacuum pump. Vacuum oil and water are two immiscible liquids, but under certain conditions, they will form stable or unstable emulsions. In contact with water, whether the oil is emulsified or not and the degree of emulsification are mainly determined by the composition of vacuum oil, the purity of water and the properties of components, as well as the temperature and vibration of vacuum oil-water system. Taking the emulsification that usually occurs in oil products as an example, when there is a kind of surface active substances (such as carboxylic acid derivatives) with both lipophilic and hydrophilic groups in real air oil or water, they will associate together at appropriate temperature and concentration to form a dense monolayer and wrap water in it. A large number of connective bodies are evenly dispersed in oil to form water in oil emulsion. It can be seen that controlling the existence of surfactant in oil-water and destroying the dense monolayer of surfactant encapsulated in water is the fundamental way to prevent and resist the emulsification of two-phase coexistence system. The preparation of vacuum oil with deeply refined base oil is of great significance to improve the anti emulsification performance of finished oil, but the vacuum oil contains various functional additives (mostly surfactants), which will inevitably affect the separation ability of vacuum oil to water. Therefore, the oil development and production personnel add a certain proportion of demulsifier with special properties to the vacuum oil to suppress this effect, so as to ensure that the vacuum oil has good demulsibility.
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Jo Parkes
Dance artist
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