The membrane filter plate of the diaphragm filter consists of two membranes and a core plate.After preliminary filtration, the filter cake was pressed suppressed by introducing high pressure medium to further reduce the moisture content of the sludge cake.The diaphragm press filter plate is made of polypropylene.It is not susceptible to sludge acidity and alkalinity when compared to ordinary filter plates made of rubber or other materials.It has strong stability and can maintain good pressure filtering effects for long periods.
A membrane filter is a press filter with an elastic film between the filter plate and the filter cloth.During use, when the feed is completed, a high pressure fluid or gas medium can be injected into the film plate and the entire film will expand the filter cake to further dehydrating the cake, which is commonly referred to as a press filter.The filter chamber is the blade filter plate filter machine can be roughly divided into two types, namely the van filter and the diaphragm filter.On the basis of the same filter chamber volume and filter chamber area.On the one hand, due to the different filter structure, on the other hand, the diaphragm filter has a higher working pressure than the box filter, and has a higher strength design requirements for the filter plate, rack and hydraulic elements.
The filter plate of the diaphragm filter was formed by a primary injection of pure polypropylene.The diaphragm press is made of two diaphragm made of polypropylene and thermoplastic elastomer (TPE) and a hollow box with a thermopressed filter plate.The diaphragm of the diaphragm filter plate also uses synthetic rubber as an elastic film.Plate.To ensure that the diaphragm filter plate is secondary suppressed by the material, the internal pressure is filled with pressurized water or pressurized air without cracking or pressure leakage, which requires not only the high temperature and high pressure suppression process.And box filters take longer to cool and eliminate internal stress.Therefore, different materials, structures and corresponding high strength working conditions are designed, so the cost of the diaphragm filter is higher than the van filter of the same capacity.
