For the filter press , the design and construction of the filter plate is very important. He plays the role of partitioning, separating, guiding, storing and pressing in the filter press equipment. classification Nowadays, the filter plates of industrial production medium filter presses are: polyvinyl chloride filter plates, pig iron filter plates, wood filter plates, glass filter plates, stainless steel filter plates, and the like. The most commonly used one is the PVC filter plate, which should be of moderate cost, and the new energy is quite stable. Therefore, the use of GF is used in industries such as industry, biology, chemical, pharmaceutical, biological, mining, smelting and domestic sewage treatment. Use, accounting for more than 95% of the current market share. The glass filter plate with the infinite element is the most durable and stable, and it is mainly used in various high-demand fields, and it is a small part of the filtration environment. This is mainly because its cost is too high, so that the manufacturing of the filter press equipment has more than doubled. The wooden filter cloth is the cheapest, when it can only be bad, plus can not be acid and alkali resistant, can not adapt to today's high temperature and harsh working environment, and also causes the maximum pressure of the filter press to be limited by it, so wood Filter plates are used in very few devices. structure Since the filter plate structure of various diaphragm filter presses is different in some specific details, the filter press filter plates produced by different manufacturers of the same type of filter press equipment are different, but the basics are different. The principle is still there. The filter plate of the filter press generally has a thickness of 60~85mm. Each filter plate is square. It is reduced to 40mm on both sides of the filter plate, and the depth of the depression is about 25mm. Not yet full of protrusions about 8mm high, can be round, can be strip-shaped. The effect of this is to allow the filter cake produced by the filter plate to be in good contact during the re-filtration process to support the filter cake. In the middle of the filter plate, a hole is also opened, which feeds the pipe, typically at a diameter of 100 mm. Below or around the depression, there is a drainage hole connected to the drainage pipe to discharge the filtered liquid out of the device. The two sides are the same. Between the filter plate and the filter cloth, the general filter cloth is two sets, and the middle is connected by a filter cloth cylinder which is smaller than the hole in the filter plate, so that the filter plate can be well included. There are still differences in the filter plate structure of the plate and frame filter press, and there are two kinds of filter plate structures: a common filter plate and a filter plate for the frame. The frame filter plate is formed by connecting four squares of the filter plate. The two filter plates are staggered to form the filter chamber of the plate and frame filter press.