The filter comprises a case and a removing cap mechanically connected by vertical uprights as well as cylindrical filtering net placed between the case and the cap. The case is made as a truncated perforated hollow cone, and a non square full slot along its big bass periphery. The slot forms a continuous contour to place the filtering net end. The uprights are attached to the cap by a set of screws. This version makes the filter durable, reliable and repairable.