Filter elements

Filter elements are the core of each BOLLFILTER and individually adapted for the diverse fields of application of our customers. Whether in the chemical, automobile industry or paper industry, whether in power stations, steel works, mining or in oil and gas production - due to the use of the optimum suitable type of mesh, the protection function of the filter is ensured at all times and the defined particles of solids are reliably retained.

Depending on the type of filter and filtration performance required, diverse meshes and materials are used for the filter elements. The filter material as sieve insert or filter candle consists of linen, stainless steel (CrNiMo steel) or polyester in different widths of mesh, so that one of the requirements of the appropriate sphere passage and the filter fineness required is ensured. In addition to the maximum attainable filter fineness being dependent on the filter medium, so are the temperature, resistance to pressure and the service life. Whilst stainless-steel wire mesh can be cleaned often and used over a long period of time, superfine disposable cartridges with a filter medium made from fleece, must be replaced after use.

A filter element consists primarily of a support body and the filter mesh, which is pulled over it. Different constructions, such as star sieves, filter cartridges or filter candles, provide different large filter areas. Due to the optimum combination of the core components, the required cleaning effect can be attained for every medium.

For example, as required, filter candles for automatic water filters can be provided with a thin, coat containing silver. This new development from BOLL & KIRCH, called FouleX, has an antiseptic effect and prevents or reduces the formation of biofilm. Biofilm consists of microorganisms and their excretions which, in conjunction with water, form hydrogels. These hydrogels are comparatively stable and difficult to remove from the filter candles. The coating multiplies the service life of the water filter and makes cleaning easier because, in many cases, disinfection of the filter candles is no longer required.



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