Belt type filter press

Abstract

The invention relates to a belt compress filter for dewatering the micro grains, wherein it is formed by a frame, a driver, a feeding device, a compress area and an auxiliary device; said compress area comprises a compress filtering roller and a filtering belt; the driver comprises a motor and a gear box; the auxiliary device comprises a tension roller, a scrape device, a water collector, a corrector, and a filter belt washer. The invention is characterized in that: the back of filter belt is lined with steel compress belt; the compress filtering rollers are compacted arranged. The invention can improve the filter pressure of compress filter to improve the balance point between the filter pressure and the filter resistance, to overcome the defects of present technique, while it can improve the dewatering efficiency and the yield.

Description

technical field [0001] The invention relates to a separation device, in particular to a belt filter press suitable for dewatering microparticle liquid-containing materials in sewage treatment plants, paper mills, food processing plants, chemical factories and farms. Background technique [0002] Water treatment plants, paper mills, food processing plants, chemical plants and farms all produce a large amount of materials that need to be dehydrated. These materials are dehydrated, concentrated and then landfilled, which can save a lot of land and reduce sewage infiltration; at the same time, when many of these materials are concentrated to a certain solid content, they can be directly used for comprehensive utilization, thereby saving drying. Energy, such as when the solid content of papermaking deinking sludge is dried to more than 50%, it can be incinerated without supplementary fuel, and its incineration residue can be used as high-quality cement raw materials. [0003] As...

AI Technical Summary

Problems solved by technology

[0005] The improvements made in the above-mentioned prior art have achieved certain effects, but because all these improvements are carried out under the conditions of traditional, lower filtration pressure and discontinuous pressing, the balance between filtration pressure and filtration resistance cannot be improved. point, it is impossible to avoid the filter cake to suck back the filtrate, therefore, it is not a fundamental improvement, and there are limitations

For example: papermaking deinking sludge is dehydrated and spontaneously combusts without supplementing fuel, and its solid content must reach at least 50%. However, the filtration pressure used by the sludge belt filter press in the papermaking industry is generally below 1.2Mpa. Under this pressure, the export solid content of papermaking deinking sludge is difficult to exceed 40%, and it cannot be directly used comprehensively.

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