Cleaning module, filter element and filter system

A filter system for filtering a media flow comprising:

• a filter system housing;
• a first and second medium having a separating device for the first medium arranged in the filter system housing;
• and
• a cleaning module for cleaning a media flow of a first medium contaminated with a second medium for the absorptive and/or adsorptive pickup of a portion of the second medium in the separated-out first medium wherein the cleaning module is arranged on the bottom of the filter system housing and is joined to the filter system housing in a media tight manner;
• wherein the cleaning module housing is cylindrical;
• wherein the cleaning module has a replaceable filter element positioned within the cleaning module housing and the filter element is shaped as a hollow cylinder with a central cavity, and wherein the filter element made of absorptive and/or adsorptive material;
• wherein the outer side of the filter element central cavity has a media tight seal, and wherein a top opening of the filter element central cavity represents the inlet of the cleaning module;
• wherein the media tight seal prevents media flow from going directly into the absorptive and/or adsorptive material of the filter element when it enters the cleaning module through the filter element central cavity under the force of gravity and thus the media flow is downward to a bottom of the cleaning module housing and enters the filter element absorptive and/or adsorptive material from below in order to flow through the filter element absorptive and/or adsorptive material upward against the flow of gravity and the media is then discharged to the outside via an outlet arranged on the top edge of the cleaning module so that the media flow goes through the absorptive and/or adsorptive material only in a sleeve of the hollow cylinder upward from below and does not go directly out of the filter element central cavity into the absorptive an/or adsorptive material;
• and
• wherein media flow pressure in the cleaning module is limited by and only sufficient to raise the media flow against gravity from the bottom of the cleaning module housing to the outlet of the cleaning module.