一、前言磁性过滤器是根据铁磁性颗粒经过磁场时,受到磁场力作用而被捕获的原理工作的。在实际的液压系统中,铁磁性颗粒占固体污染颗粒的比例是很大的。这样,利用磁性过滤器作为液压系统中多级过滤的前置级,可以有效地提高系统的清洁度水平,延长后一级精密过滤器的使用寿命。长期以来这种经济、有效的过滤器在液压系统中没有得到广泛的应用,其重要原因之一就是由于现有的磁性过滤器结构上不能在线清洗,使它们工作一定时间后,如不采用人工方法清洗,被吸附在磁极上的颗粒还 First, the preface Magnetic filter is based on ferromagnetic particles through the magnetic field, the role of the magnetic field was captured by the principle of work. In actual hydraulic systems, the proportion of ferromagnetic particles to solid-contaminating particles is large. In this way, the use of magnetic filters as a prefilter for multi-stage filtration in a hydraulic system can effectively improve the cleanliness of the system and prolong the service life of the latter-stage precision filter. For a long time, this economical and effective filter has not been widely used in hydraulic systems. One of the important reasons is that the existing magnetic filters can not be cleaned on-line so that they work for a certain period of time without using artificial Method of cleaning, was adsorbed on the pole of the particles also