Products & technology - Standard welded membrane filter plates
Standard welded membrane filter plates
Standard welded membrane filter plates from Klinkau are suitable where chamber fillings are homogeneous and process parameters standard. A minimum pre-squeeze cake thickness of 1/3 of the chamber volume is required to ensure proper membrane functioning. The combination of membrane filter plate and chamber filter plate (combined pack) keeps initial investment low and guarantees excellent filtration results.
Advantages of standard welded membrane filter plates
- Solid plastic membrane filter plate with welded membranes.
- Variable choice of materials for high chemical resistance.
- Fully separated squeeze medium and filtrate.
- Membrane corners as ¼ circles to enable tension-free membrane movement.
|Sizes||470mm, 630mm, 800mm, 1000mm, 1200mm, 1450mm, 1500mm, 2m x 2m. More sizes available on request.|
|Einlauf-Position||Centralised feed, decentralised feed, corner feed, external feed eye Other feed eye arrangements can be provided for specific requirements.|
|Pressure||Standard products are suitable for maximum filtration pressures of 7 bar and maximum squeeze pressures of 16 bar. Plates also available for higher filtration and squeeze pressures.|
|Temperatures||The maximum permissible filtration temperature depends on factors such as filtration pressure, squeeze pressure, the chemical composition of the slurry to be filtered, cycle time and choice of filter material. Membrane cooling or heating is also possible during the filtration cycle.|
|Materials||Klinkau filter plates are available in the following materials: polypropylene, modified polypropylene, thermoplastic elastomers, PVDF as well as our own specially developed membrane material. A combination of different materials can be used for the body plate and membrane.|
Membrane technology has replaced the unproductive phases of pressure filtration with membrane squeezing. Filtering efficiency is therefore maintained throughout the filtration phase and filtration times are significantly reduced Klinkau's welded membrane filter plate is based on the different functioning of the membrane and the membrane plate.
The plate's function is to cope with the mechanical requirements of a chamber filter plate. It supports the membrane during the filtration process and has a pipped profile so the membrane does not lie completely flat against the plate (refer to the advantages of membrane filter plates).
Klinkau membrane filter plates have two hinged lines that keep flex pressure at the hinged areas to a minimum during filtration and squeezing, thereby extending the membrane service life. A minimum pre-squeeze cake thickness of 1/3 of the chamber volume is required to ensure proper membrane functioning. The standard welded system is ideally suited for homogeneous slurry that provides the required volume of chamber fill. If a sufficient chamber fill cannot be guaranteed, we recommend the "empty chamber" version. Squeezing into empty chambers is then possible without damaging the membrane.
Filtration processes often have high demands concerning cake washing. The low positioning of the filtrate drainage outlets reduces the risk of wash-water short circuiting and makes the system ideal for complex cake washing. Short wash times and minimum wash-water consumption are special features of standard welded membrane filter plates.