The three major factors affecting the life of the hydraulic filter

Hydraulic filter cartridges are used in hydraulic systems to filter out debris and rubber impurities in the system to ensure the cleanliness of the hydraulic system. The service life of the hydraulic filter is an important problem in the actual hydraulic system, especially in the high-pollution working conditions, the failure of the filter element and the resulting failure of the hydraulic system is particularly prominent. What are the main factors affecting the service life of the hydraulic filter?

First, the filter performance

1. Filtration Accuracy: Filtration accuracy refers to the filtering ability of filter material to different size particle pollutants.

It is generally believed that the filtration accuracy is high and the life of the filter element is short.

2. Pollutant holding capacity refers to the weight of the particulate pollution that can be contained in the filter material per unit area when the pressure drop of the filter material reaches the specified quantity during the test. The hole of the filter element is easily trapped by the accumulation of particle contaminants and the pressure difference increases. When the pressure difference reaches the specified maximum limit, the service life is terminated.

The most direct parameter of the end of filter life is that the differential pressure upstream and downstream of the filter element reaches the pressure at which the bypass valve opens. At this time, the filter's capacity for holding the waste water also reaches its maximum value. If the filter element is designed and manufactured, the filter element should be considered to increase the Dirt capacity, which is to increase the life of the filter element.

Second, the filter process parameters

1. The wave height, wave number and filter area are determined under the premise of the filter's external dimensions. Changing the wave height, wave number and other process parameters to increase the effective filter area of ​​the filter material can reduce the flux per unit filter surface and increase the entire filter element. Drainage capacity, improve filter life. By increasing the filtration area of ​​the filter element, the service life of the filter element is often increased more quickly. If the wave number is increased too much, the crowded folding wave will reduce the hydraulic oil flow space between the wave and the wave, which will increase the pressure difference of the filter element! Differential pressure alarm time is short and life is reduced. It is generally preferable to keep the wave spacing at 1.5-2.5 mm.

2, the strength of the support network in the filter structure in the inner and outer layers of metal wire mesh is a certain strength, the metal wire mesh to maintain the original folds to prevent bending and to support the filter to prevent fatigue failure.

Third, the filter used in the process of hydraulic fluid contamination

After the pressure filter core is manufactured, its nominal service life has been decided by itself, but more importantly, how the user uses the hydraulic filter element, and the installation and rational use of the hydraulic filter filter play a certain role in controlling the pollution of the hydraulic element. For the filter (filter element) life and the original cost of the filter elements together determine the user's economic use of the product, to improve the filter life is not only the filter cartridge design and manufacturers, but also the user of the filter element, both should be Hydraulic oil is contaminated by channels, hydraulic system conditions, filter filtration performance, and process manufacturing parameters to improve cartridge life.