Filter material for a fluid and drainage layer for such a filter material including a filter element

A filter material and filter layer technology, applied in the direction of filter separation, separation methods, chemical instruments and methods, etc., can solve the problems of small anti-pressure alternating load capacity, etc., and achieve the effect of high structural strength and good strength characteristics

Active Publication Date: 2015-10-28
HYDAC FILTERTECHNIK GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the case of the latter the disadvantage of a lower resistance to alternating pressure loads during operation

Method used

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  • Filter material for a fluid and drainage layer for such a filter material including a filter element
  • Filter material for a fluid and drainage layer for such a filter material including a filter element
  • Filter material for a fluid and drainage layer for such a filter material including a filter element

Examples

Experimental program
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Embodiment Construction

[0020] The filter element shown in part in FIG. 1 as belonging to the prior art has a filter mat 10 as a filter material, the filter mat having a predetermined area size and a predetermined filter characteristic. The filter mat 10 is pleated as shown in FIG. 1, and the filter mat has a plurality of individual filter pleats 12 with a tight packing sequence in the inner, fluid-permeable support tube 14 Extend between and between the outer cylindrical shell 16 which is also fluid permeable. For better illustration, the individual filter pad pleats 12 are shown partially apart from each other, and the single-layer structure of the pleated filter pad 10 can be seen from the partial illustration facing the viewer. The filter pleats 12 constitute a W-shape or a V-shape and are defined between fluid intermediate spaces, which increase in volume on the inflow side directed outward.

[0021] In the filter element constructed in this way, the filter mat 10 generally includes a first suppor...

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PUM

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Abstract

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 arc-shaped 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.

Description

Technical field [0001] The invention relates to a filter material for fluids, in particular fluids in the form of hydraulic fluids, the filter material having a permeable filter medium which is constructed in multiple layers and has at least one filter layer. Furthermore, the present invention relates to a drainage layer especially provided for the above-mentioned filter material and a filter element constructed from such a filter material. Background technique [0002] Filter materials for the manufacture of replaceable filter elements in hydraulic equipment are known in a variety of construction solutions (US 2005 / 0269256 A1, US 2007 / 0175191 A1, etc.) and include, for example, a filter fiber mesh, which is preferably It is multi-layered, and the filter fiber web has support layers on one side, but preferably on both sides (inflow side and / or outflow side). When the filter material flows through, a significant pressure difference is partially generated between the unfiltered si...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/08B01D39/16
CPCB01D39/083B01D39/086B01D39/1623
Inventor M·施文德
Owner HYDAC FILTERTECHNIK GMBH
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