Filter packs can be configured in a variety of ways including full recessed packs as well as full membrane squeeze packs consisting solely of membrane filter plates. Membrane filter plates – also known as diaphragm filter plates – feature flexible drainage surfaces with a chamber below the drainage surface that may be inflated to exert additional pressure on the filter cake. Water pressure is the commonly used method for inflation, and the pressure is generated by pumping water into the squeeze cavity to inflate the face of the filter plate against the filter cake. Compressed air may also be used for the squeezing although working with water is typically a safer alternative.
Membrane plates usually operate at a feed pressure of up to 7 bar and squeeze pressure up to 15 bar. Special plates can be designed to accept higher feed and squeeze pressures.
Membrane Filter Plates Advantages:
Mixed pack membrane filter plates are a configuration in which one recessed (chamber) filter plate is alternated with one membrane plate in the filter press plate pack. Use of these mixed packs – where the diaphragm (membrane squeeze) plates alternate with the recessed plates – not only delivers reduced cake moisture because of the added squeeze but also cost-savings in overall plate pack costs vs. the full membrane squeeze pack design. In most applications, the same process improvements can be realized with a “mixed pack” membrane filter plate system at 30-40% lower costs as compared to an all membrane plate system.
Two types of membrane squeeze plate designs are typically used, fixed membranes and replaceable membranes. With the replaceable membrane, only the membrane bladder is changed not the full plate. There are also other design options including either center feed or corner feed. Micronics’ filtration specialists can work on selection of just the right filter plate materials of construction and configuration for your particular application and for your production goals.
The requirements of customers are as diverse as our solutions. We aim to provide the right solution for your every problem. NMP is an innovative expert in the separation of solids and liquids. Our innovative solutions are based on our wide range of products which one can customize according to the needs of our consumers. Thus every product of NMP becomes one of its kind. Customization of products gives a unique touch to all products.
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The most basic thing to consider while using and operating a filter press is determining the right filter component for the Membrane filter plate. One of the most popular types of filter plates is the CGR Filter plate. The mix of filter plate components in any filter press will help you determine good materials and their development. The cost factor also becomes a thing to consider here. The primary application of filter press plates is eliminating fine matter and small stones from the liquid.
Filter press plates for chamber filters are its most essential parts. The plastic filter plates are resistant to chemicals and pressure. Polypropylene is the material used to manufacture these plates. Filter plates, mainly responsible for the solid and liquid separation, are installed with different types of filter cloth. The filter plates can withstand temperatures as high as 130 degrees and as low as 10 degrees. They can also operate continuously without any difficulty and technical problems. The plate and cake thickness is customized according to the application and the filtration condition. The size of the plates can be 305mm*305mm to mm*mm. The range of the thickness of the cake can vary between 15mm*50mm. The size of the plates and the thickness of the cake allow for optimal adaption to filtration tasks.
CGR Filter Plates are an advanced version of Recessed Chamber Closed Configuration Plates. Filter Cloth is clogged in the clogging groove around the recess plate of CGR Filter Plates. ‘O’ Ring seats around the sealing edge and filtrate hole of CGR Filter Plates provide a tight seal when the plate pack is closed. Cloth clogging groove helps in easy installation of filter cloth and requires the least maintenance. CGR Plates are highly proposed and essential for zero leak conditions of toxic substances. Toxic materials like Acidic solutions should not be leaked and should be tightly secured as it is very harmful. Different elastomers like EPDM, Neoprene, Viton, etc. are available for ‘O’ Ring. Filter Cloth Selection are obtainable with the centre, top, bottom, and corner feeding with flexible diameters. CGR Plates are made at eight and sixteen bar operating pressure.
CGR Plates are made of polypropylene primarily applied in metal hydroxide. Since CGR Plates provides leak-free operation, it provides drier cakes. A filter cloth of CGR is shaped like an octagon and caulked into a groove. The groove is present around the outer edge of the plate recess. Industries commonly using CGR are chemical manufacturing, industrial, mining, food and beverage, and municipal waste. Although Non-gasketed cloth is simpler to install and is faster, CGR Plates contributes to zero leak operation. The plate seals against the next plate in a CGR Plate, thus creating an obstruction that prevents any wicking. CGR Filter Cloth is present in grooves inside the filter plate. The grooves presented inside the plates are between the width of ¼'' and 3/8''.When the plate pack is closed, grooves present with an "O-Ring" around the sealing edge and filtrate holes form a tight seal.
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