FILTER MATERIAL FOR A FLUID AND DRAINAGE LAYER FOR SUCH A FILTER MATERIAL INCLUDING A FILTER ELEMENT

摘要

The invention relates to a filter material for a fluid, in particular in the form of a hydraulic fluid, said filter material comprising a multi-layer filter medium (10) through which a fluid can flow and which has at least one filter layer (20), a drainage layer (32) which forms a three-dimensional structure being designed to enlarge the flow channels formed for the fluid to flow through. Said drainage layer cooperates with an adjacent drainage layer and/or consists of individual line elements (33) that form a mesh or grid structure, those line elements being arcshaped or curved at least to some extent. The invention further relates to a drainage layer (32) as such and to a filter element based thereon.

主权项

1. A filter material for fluids, in particular hydraulic fluids, which has a multi-layer filter medium (10), through which a fluid can flow, and which has at least one filter layer (20) as well as at least one drainage layer, characterized in that an additional drainage layer (32) is provided, which forms a three-dimensional structure, to enlarge the flow channels formed for the fluid to flow through.