Engineering sump oil efficient filtering device based on friction charge principle

Abstract

The invention provides an engineering sump oil efficient filtering device based on the friction charge principle. The engineering sump oil efficient filtering device comprises a shell, an initial filtering layer, a friction layer, a flow mixer and a capturing filtering layer. An oil inlet and an oil outlet are formed in the shell, an initial filter layer, a friction layer, a flow mixer and a capture filter layer are sequentially arranged in the direction from the oil inlet to the oil outlet, and the friction layer comprises a positive friction layer and a negative friction layer which are arranged in parallel; dirty oil enters the shell through the oil inlet, passes through the initial filtering layer and then is divided into two strands, one strand of dirty oil passes through the positive friction layer, tiny particles in the strand of dirty oil are positively charged, the other strand of dirty oil passes through the negative friction layer, tiny particles in the strand of dirty oil are negatively charged, and then the two strands of dirty oil enter the flow mixer to be mixed; and the oil is discharged from the oil outlet after passing through the capturing and filtering layer. Friction charge is used for replacing high-voltage static electricity, small particles in hydraulic oil can be removed through the low-grade filter element, energy consumption is reduced, and meanwhile safety, reliability and easy operation are achieved.

Description

technical field [0001] The invention relates to the field of oil purification, in particular to a high-efficiency filtering device for engineering sewage oil based on the principle of frictional charging. Background technique [0002] A large number of research data show that 70% to 80% of the failures of hydraulic systems are caused by pollutants in hydraulic oil, especially hard solid particle pollutants, which not only accelerate the wear of hydraulic components, but also block the gaps and gaps of components. orifice, resulting in reduced performance and shortened service life. At present, the treatment of solid particulate pollution in dirty oil mainly adopts the method of filtration. Different grades of filters are selected for solid pollutants of different particle sizes. However, some shortcomings are also exposed during use: the higher the filtration accuracy of the filter element The lower the service life. The mesh size of the higher precision filter element res...

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Problems solved by technology

[0002] A large number of research data show that 70% to 80% of hydraulic system failures are caused by pollutants in hydraulic oil, especially hard solid particle pollutants, which not only accelerate the wear of hydraulic components but also block the gaps and Orifice, resulting in its performance degradation and shortened service life

At present, the treatment of solid particle pollution in dirty oil mainly adopts the method of filtration, and different grades of filters are selected for solid pollutants of different particle sizes, but some shortcomings are also exposed during the use process: the higher the filtration accuracy of the filter element The lower the service life

The mesh size of the higher precision filter element results in lower dirt holding capacity and reduced service life

[0003] At the same time, there are vacuum oil purifiers, high temperature and high pressure oil purifiers, electrostatic oil purifiers, etc. in the domestic market for purifying waste oil. Vacuum oil purifiers mainly use the low boiling point of organic matter under vacuum to remove impurities in waste oil. , this method has complex equipment, high equipment investment cost, high energy consumption, and poor effect; while the high-temperature and high-pressure oil purifier mainly uses the difference in the boiling point of organic matter under high temperature and high pressure to remove impurities in waste oil. It is huge, difficult to handle, and the recovery efficiency is extremely low, resulting in very high processing costs, so it is necessary to develop a low-energy oil purification equipment

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