Method and apparatus for separating particles in lubricating oil based on micro-fluidic chip

Abstract

The invention discloses an apparatus for separating particles in lubricating oil based on a micro-fluidic chip. The apparatus comprises: the micro-fluidic chip, wherein the micro-fluidic chip comprises a micro-fluidic chip main body and a substrate which are sequentially arranged from top to bottom, the micro-fluidic chip main body is provided with a main channel for oil to be detected to flow through, and the micro-fluidic chip main body is also provided with an electrode placing channel penetrating through the main channel and a plurality of separation channels symmetrically arranged at two sides of the main channel; a power supply module connected with a detection electrode placed in the electrode placing channel, wherein the electric field intensity of a detection area is changed by adjusting the voltage size of the power supply module; a micro-injection pump connected with the tail end of the main channel and used for keeping the vacuum degree of a waste liquid area; and an LED ultraviolet lamp arranged over the micro-fluidic chip. The invention also discloses a separation method adopting the apparatus. The apparatus and the method have the advantages of small occupied area, simple principle, strong practicality, and realization of low-cost, simple and rapid online detection.

Description

technical field [0001] The invention relates to a technology for separating different types of metals from lubricating oil and metal and non-metallic particles, in particular to a method and device for separating particles in lubricating oil based on a microfluidic chip. Background technique [0002] Lubricating oil is widely used in mechanical equipment. Lubricating oil contains a large number of pollutants, among which solid pollutants are the most harmful. Metal particles in solid pollutants have high hardness, which can easily cause wear of moving parts of mechanical equipment and cause mechanical failure. In addition, through the study of the material, quantity and size of lubricating oil metal and non-metallic particles, the working status of mechanical equipment can be effectively evaluated, and the failure status of the mechanical equipment can also be predicted. [0003] At present, the requirements for improving the operational safety of mechanical equipment, redu...

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Problems solved by technology

However, quantitative ferrography has its inaccuracy. Wear particle analysis mainly depends on the knowledge level and practical experience of the operator. Sampling is not representative. It takes a long time to make ferrography, and the analysis speed is not high.

[0008] The above-mentioned online lubricating oil detection methods all have certain deficiencies, and cannot fully meet the detection requirements of low cost, rapidity, and sensitivity.

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