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The origin and development of filter press
Time: 2015-11-20 09:26:48Phone/Wechat: 156-7062-6070Author: Dingli
Guide:The Han Dynasty in China is in the wine making process using the simple filter filtration equipment, even the distiller's grains together drinking is one of ou

The Han Dynasty in China is in the wine making process using the simple filter filtration equipment, even the distiller's grains together drinking is one of our country since ancient times, wine drinking way. China, until 1965 by the pilot light industry organized by the Department of the wine press, introduction and promotion BKY54/820 gas pattern plate and frame filter press, the machine also has the squeeze and filter functions, so to get the national invention third class award. The end of our country's traditional human squeezing filtering method.

In the early part of the 19th century, because the Germans love drinking, alcohol is in short supply relative to the demand, a local liquor manufacturers in order to speed up the wine press and filter, the invention of the world on the first frame filter press, greatly accelerated the work efficiency, and improve the quality of the filter. Until today, the filter press has become a very important equipment in industrial production and application.

Press Filter

The first generation of filter press. It is used in dehydration of high ash, fine-grained, high viscosity of the slurry and tail coal, also suitable for dewatering of coal. The moisture content of the product is about 22% ~ 0.1, and the filtrate concentration is 20% ~ 0.03g/l. But it also has shortcomings, mainly in four aspects: processing capacity is small, intermittent production, filter for a long time; heavy and cumbersome body, large space occupation; complex operation, operation cost is high; cloth consumption is high, short service life of the filter plate, the amount of maintenance high.

Press FilterThe second generation of filter press, the main feature is the change of the filter plate. This new filter plate forms a filter chamber, and the thickness can be changed, and the filter plate is called a thin film filter plate. The working process of the new filter press and the first generation of filter press is in after the end of the "filter" is extruded into filter plate on the surface of the rubber membrane filter plate and between into compressed air or water the rubber membrane bulge. This process is called "extrusion process". Extrusion dehydration is an effective method for the dewatering of filter cake. Because of the many gaps between the particles, the displacement and deformation of the particles can be reduced, and the moisture content of the filter cake can be reduced. In the extrusion process, the filter cake is obviously deformed, and the deformation of the filter cake is obviously decreased, and the water drop becomes slow. How much the filtrate is discharged depends on the extent of the filter cake. Because of the shrinkage of rubber film, it also improves the ability of unloading.

VPA type filter press development America Denver company Sarah is representative of the third generation of filter press. So far this machine has more than 10 units in various industries. This generation of filter press to the direction of large-scale development, most of the steel filter plate, after a long running more, steel core of the filter plate despite the high cost but durable.

Press Filter

Compared to the third generation of filter press, the fourth generation of filter press is the most significant difference is the body small, simple structure, occupies less space, less filter plate, fast circulation; by mechanical extrusion process, and the second and the third generation of filter press with a rubber diaphragm squeeze compared with the life much longer, and the energy consumption is low, the use of reliable; according to the incoming through simple adjustment, it will be required of the moisture of the products.

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