filter press plate

filter press plate choice

the selection of the correct filter element--is absolutely critical to filtration applications. Among determinant factors in plate configuration are cake thickness and filtration area, the temperature of the filtrate, the need (or lack of need) for temperature control, volatility of the filtrate, viscosity, and so on. The particular combination of these factors in any application will determine compatible materials of construction. Cost is also a consideration here. The multiplicity of factors inherent in any application makes flexibility of plate construction material a real advantage to anyone designing a filtration system..

filter press plate design

Chamber Filter Plate

Traditional recessed chamber Filter Press operation employs a steady increase in pressure over time as the cake thickness increases, in order to achieve the optimum combination of chamber filling and cake dryness. At a significantly reduced filtrate rate, the filtration is stopped, the press discharged and a new cycle started. Chamber Filter Presses are reliable and robust in many different applications. The plate pack consists of uniform chamber plates with a recess of 15 - 50 mm to receive the filter cake. A chamber plate is a combination of a Filter Plate and two frames in once piece. The standard material for chamber plates is Polypropylene. Possible operating pressures: 6, 15 and 20 bar.

Membrane Filter Plate

During the initial phase of the filtration cycle, so-called “fill and filtration” the process is similar to the chamber Filter Press. After reaching a predefined pressure, usually around 4-10 bar, depending on the sludge characteristics, sludge feeding is stopped and the membranes slowly inflated, using either water or air as squeeze medium. The cake is hereby compressed and dewatered further. This process is continued until the filtrate flow reaches a preset minimum limit. Then the squeeze medium is relieved and the cake discharged. Membrane Filter Plates are designed just like the previously described chamber plates. A flexible membrane is fixed to the support body. Materials for the membranes include Polypropylene, synthetic rubber (for example NBR, EPDM) or thermoplastic elastomer (TPE). Special materials such as PVDF are also available. The membrane is impermeable and serves to compress the cake within the chamber after the filtration process is complete. Liquid or gas (compressed-air) can be used as membrane inflation media. In order to guarantee maximum protection for the membrane filter press, we use special safety systems for the various membrane inflation media. Inflation pressures up to 30 bar, and in special cases even higher, are possible.

Gasketed Filter Plate

These are advance version of Recessed Chamber Closed configuration plates, where Filter Cloth is caulked in the caulking groove around the recess of plate. Major benefits of this design are Zero leakage because 'O' Ring seats around the sealing edge and filtrate hole secure tight seal when the plate pack is closed. Cloth caulking groove provide easy installation and least maintenance of the filter cloth. CGR plates are recommended and necessary for leak proof conditions like toxic substance, acidic solutions etc. 'O' Ring are available in the different elastomers like EPDM , Neoprene , viton etc. These plates are available with centre, top, bottom and corner feeding with adaptable diameter and designed at 8 and 16 bar operating pressure.

filter press plate manufacturer

Zhengzhou Toper Industrial Equipment Co., Ltd. is the top manufacturer and service provider for filter press filtration integration solution in China, combining slurry, filtration process research, control system design, filter press production and system commissioning service, Toper Filter provide professional filtration integration solution for clients in Environmental protection, Mineral processing, Chemicals, Food and Pharmaceutical industries, etc. The filter press sales area cover all provinces in China, and have been exported to more than 40 countries and regions.

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