Oil contamination during the use of 1. filter element
Improving the service life of the filter element is not only a matter for the filter element design and the hydraulic press manufacturer, but also a matter for the personnel who operate the filter element. Both should be considered in terms of the oil contaminated channel, hydraulic system conditions, filter element filtration performance and process manufacturing parameters to improve Filter element folding service life.
Filtration performance of 2. filter element
1. The filtering accuracy of the filter element: mainly refers to the filtering ability of the filter material to remove particulate pollutants of different sizes. The hydraulic press manufacturer believes that the higher the filtering accuracy, the shorter the life of the core.
2. The dirt holding capacity of the filter element: mainly refers to the particle pollution weight per unit area of the filter material when the pressure drop of the filter material reaches the specified quantity value during the test. The filter hole is susceptible to the accumulation and retention of particulate pollutants through the channel, resulting in an increase in the pressure difference. When the pressure difference reaches the specified limit value, the service life ends.
Process parameters of 3. filter elements
1. Wave number, wave height and filter area: Under the premise that the external dimensions of the filter element have been determined, change the wave height, wave number and other process parameters to increase the effective filter area of the filter material as much as possible, which can reduce the flux per unit filter material surface And increase the dirt holding capacity of the entire filter element, improve the life of the filter element. By increasing the filter area of the filter element, the service life of the filter element usually increases faster. If the wave number increases too much, the crowded folding wave will reduce the oil flow space between the waves, resulting in an increase in the pressure difference of the filter element and reaching the filter element The time for the pressure difference alarm will be shorter and the life will be reduced. It is usually suitable to keep the wave spacing at 1.5-2.5mm.
2. About the strength of the support net: 1200 tonsfour-column hydraulic pressIt is particularly important that the metal wire mesh of the inner and outer layers have a certain strength in the structure of the filter element. The metal wire mesh maintains the original shape of the wave folds to prevent bending and supports the filter material to prevent fatigue failure.