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Filtration accuracy of high pressure oil filter element

  • Categories:NEWS
  • Author:Yinbeier
  • Origin:www.inbornfilter.com
  • Published on:2019-10-04

In hydraulic system, the filter is used to filter out the working medium, the depth of the composed of multilayer glass fiber filter material, used for the fine filter precision Δ P (bar) to 210 (micr

Filtration accuracy of high pressure oil filter element

In hydraulic system, the filter is used to filter out the working medium, the depth of the composed of multilayer glass fiber filter material, used for the fine filter precision Δ P (bar) to 210 (micr

  • Categories:NEWS
  • Author:Yinbeier
  • Origin:www.inbornfilter.com
  • Published on:2019-10-04
Information
In hydraulic system, the filter is used to filter out the working medium, the depth of the composed of multilayer glass fiber filter material, used for the fine filter precision Δ P (bar) to 210 (microns) : 3,5,10,20 of solid particles and colloidal substances, to effectively control pollution of working medium.
Filtration accuracy refers to the filtering ability of filters to different sizes of particle pollutants. Absolute filtration accuracy, filtration ratio and filtration efficiency are commonly used for evaluation. Filtration accuracy is divided into four grades: coarse (d≥0.1mm), ordinary (d≥0.01mm), fine (d≥0.005mm), and extra fine (d≥0.001mm).
The filter in the hydraulic system is a liquid resistance to the oil, so the oil must produce pressure drop. Generally speaking, in the case of a certain filter element size and oil flow rate, the higher the filtration accuracy of the filter element, the greater the pressure drop. In the case of a certain flow rate, the larger the effective filtration area of the filter element, or the smaller the viscosity of the oil, the smaller the pressure drop.
The maximum allowable pressure drop of the filter element shall be in order to prevent structural damage to the filter element. In general, the initial pressure drop of air and naval filters should not exceed 0.25mpa. The pressure drop of the filter for mechanical use shall not be greater than 0.08 MPa ~ 0.15MPa.
The fault of hydraulic system should be taken seriously. The fault is more obvious when proportional valve and servo valve are used. Therefore, the correct selection of special filter element for hydraulic oil in the design process is the key to ensure the normal operation of the hydraulic system and extend the service life of the hydraulic equipment.

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