The lower water collection device with filter caps arranged at equal intervals

Abstract

The invention belongs to the technical field of water treatment and relates to a water collecting device. A lower segment water-collecting device with equidistantly arranged filter caps comprises a plurality of shores arranged at intervals and a plurality of filtering plates, wherein equidistantly arranged filter caps are arranged in the filtering plates; four corners of the filtering plates are arranged at the upper ends of the shores; the upper ends of the four corners of the filtering plates are sunken to form assembling slots in specific shape; the assembling slots of the adjacent filtering plates around the shores are in seamless connection; gaskets are arranged in the assembling slots of the connected filtering plates; the difference of the filter cap interval of some filtering plates and the minimal interval of the filter caps between two adjacent filtering plates is within the threshold. According to the lower segment water-collecting device provided by the invention, the fixed interval between the filter caps can be kept within the whole area and the dead water region occuring between the clearances of the filtering plates can be eliminated. Besides, after through holes are formed at the lower ends of the filter cap shells, the impurities at the lower ends of the filtering plates can be cleared away in backwash process, the sludge influencing the quality of the purified water can be effectively removed and the odor caused by dead water or the harmful factors in the water purifying process can be fundamentally improved.

Description

Technical field [0001] The invention belongs to the technical field of rainwater treatment equipment, and relates to a lower water collection device. Background technique [0002] The lower water collection device is installed in the lower part of the filter layer of the filter tank, which can support the filter material, and play a role in the concentration of filtered water and the equal distribution of backwash water. [0003] figure 1 Shown is the sectional structure of the ordinary filter tank (1). The lower water collection device (2) such as figure 1 As shown, it is installed in the lower section of the crushed stone support layer of the filter tank (1). The types of the lower water collection device (2) include the porous tube form or the Hoiler form, the filter cap form, etc., such as figure 1 As shown, the form of the filter cap is to bury a plurality of filter caps (4) vertically. [0004] figure 2 It shows the well-known backwashing process of the lower water collectio...

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Problems solved by technology

[0004] figure 2 It shows the well-known backwash process of the lower water collection device (2). If the backwash does not form an equal flow distribution, there will be insufficient flushing, partial blockage on the filter side and stagnant water.

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