Arched strip type negative-pressure filter device

Abstract

The invention discloses an arched strip type negative-pressure filter device. The device comprises a filtration driving mechanism and a filter chamber, wherein the filtration driving mechanism consists of filter strips which are coiled around rotating wheels and the outer circumference of a driving roller, and an arched filter surface is formed; the filter chamber is arranged below the arched filter surface of the filtration driving mechanism, and the edge of the arched filter surface leans against the inner wall of an opening of the filter chamber; a filtrate discharging pipeline is also arranged in the filter chamber and is connected with a vacuum pump so that the filter chamber is in a negative-pressure state. The filtration workface of the filter device disclosed by the invention is increased by more than 1 / 3 in comparison with that of a general strip type filter device under a condition that the distance between the two rotating wheels is not changed, so that the work efficiency of filtration is increased by a corresponding amplitude; furthermore, a better filtration effect is achieved due to increment of the filter surface, the amount of adsorbed liquid of formed filter residues is reduced by more than 10% in comparison with that of the general strip type filter device, and the arched strip type negative-pressure filter device has the advantages of high filtration work efficiency, good solid and liquid separation effect, small size, simple structure and the like.

Description

technical field [0001] The invention relates to the technical field of filtering equipment, in particular to an arched belt-type negative pressure filtering device. Background technique [0002] Filtration devices are widely used in chemical industry, petroleum, coal, environmental protection, food and other fields to achieve solid-liquid separation. At present, box-type filter presses and belt-type filters are mainly used, and box-type filter presses have equipment investment. Large size, complex structure and only intermittent operation lead to defects such as low work efficiency, large energy consumption and poor filtering effect. The currently used belt filter, especially the belt filter with a high-pressure filtration system, can improve the extrusion effect on the separated material, reduce the moisture content of the solid material, and realize continuous operation, but it still has a large volume. , high energy consumption and complex structure defects. Contents o...

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Problems solved by technology

[0002] Filtration devices are widely used in chemical industry, petroleum, coal, environmental protection, food and other fields to achieve solid-liquid separation. At present, box-type filter presses and belt-type filters are mainly used, and box-type filter presses have equipment investment. Large, complex structure and only intermittent operation lead to defects such as low work efficiency, large energy consumption and poor filtering effect

The currently used belt filter, especially the belt filter with a high-pressure filtration system, can improve the extrusion effect on the separated material, reduce the moisture content of the solid material, and realize continuous operation, but it still has a large volume. , high energy consumption and complex structure defects

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