The development and progress of filter press

         The advancement of science and technology has promoted the development of my country’s industrial manufacturing industry, and as an important production equipment in industrial production-filter press, it has also gone through many development stages. Lang Dong Filtration stated that during the development of the filter press, many changes have taken place in the structure and process of the equipment, which eventually formed the membrane filter press, stacked screw filter press, and chamber filter press on the market. Various types of filter presses.
　　 my country’s first generation of filter press began to be used in large quantities around the 1970s. The first generation of filter press is suitable for the dehydration of coal slime and tailings with high ash content, fine particle size and high viscosity, as well as the dehydration of clean coal. Although the first-generation filter press basically met the requirements of the industrial market for filtration equipment, Langdon Filtration stated that due to the limitations of science and technology at that time, the first-generation filter press still had obvious shortcomings.
　　Because the first generation filter press adopts intermittent operation mode, the processing capacity is small, intermittent production, and the filter press time is quite long. Screw stacker function: extract the solids in the mixed liquid to realize the separation of solid and liquid. At the same time, Shanghai Da Zhang said that due to the backward design technology, the body of the first-generation filter press equipment was bulky, which was too bulky compared to modern filter presses.
　　 Due to the many shortcomings of the first-generation filter press equipment, with the passage of time, the first-generation filter press has been unable to meet the needs of industrial production, and thus the second-generation filter press has been produced.
　　 Compared with the first-generation filter press, the second-generation filter press has an improvement in the filter plate. The thickness of the filter chamber formed between the filter plate and the filter plate can also be designed according to needs. The stacked screw filter press uses a special filter medium to apply a certain pressure to the object to make the liquid percolate out of a mechanical device. It is a commonly used solid-liquid separation device. Said that the second-generation filter press is the prototype of the current membrane filter press and the beginning of a fully automatic filter press.

　　 In addition, in the pressing process, the second-generation filter press is also significantly different from the first-generation filter press. Indicates that the filter plate of the second-generation filter press has a Danish imported TPE elastomer. When it is squeezed, the compressed air or water between the rubber film on the surface of the filter plate and the filter plate swells the rubber film to achieve ; Squeeze dehydration; the role.
Extrusion dehydration is an effective method for filter cake dehydration. Because there are a lot of voids between the constituent filter cake particles before being squeezed, when the filter cake undergoes the extrusion dehydration process, the displacement and deformation between the filter cake particles, The voids in the filter cake become smaller and part of the filtrate is squeezed out, and the filter cake becomes tighter, thereby reducing the water content of the filter cake.
　　 said that the second generation of filter presses was the beginning of modern filter presses, indicating the current situation of various types of filter presses. Today’s filter press equipment has completely got rid of the former singularity mode, and has gradually developed in the direction of diversification. At the same time, different filter press equipment has different advantages and areas of expertise. In the face of the current filter press market with diversified products, the company can choose more suitable filter press equipment that is more conducive to production according to its own production needs.

　　 These are the series of improvements made by the filter press with the advancement of science and technology and the advancement of industrial production requirements. In the future, with the renewal of market demand, the filter press will definitely undergo the third and fourth generation of equipment changes. However, no matter what kind of equipment changes are experienced, its development is bound to move in a more powerful direction for social production.

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