Filter with circulation filtering layer

Abstract

A filter with a circulation filtering layer is characterized in that a water distributing pond arranged at the upper portion of a shell is connected with a raw water pipe, a water distributing hole plate at the bottom of the water distributing pond and the upper end of a sealing cover are fixed, and the lower end of the sealing cover is in contact with the upper layer of the circulation filtering layer; a driving shaft and three driven shafts are arranged in a rectangle mode on the two side walls of the shell, the driving shaft is fixedly connected with a power device, the two ends of the driving shaft are fixedly connected with a driving chain wheel, and the two ends of each driven shaft are fixedly connected with a driven chain wheel; a supporting chain fixed by the circulation filtering layer is connected to the driving chain wheel and the driven chain wheel in a wrapped mode, the upper layer of the circulation filtering layer strides a clear water collecting pond, and the lower layer of the circulation filtering layer is arranged in a washing pond; the circulation filtering layer surrounds the clear water collecting pond, and the clear water collecting pond is connected with a clear water outlet pipe through water draining holes in the side walls; a plurality of washing sprayers arranged on the lower part of the clear water collecting pond are connected with a washing pump and a clear water header pipe through a washing pipeline. The filter has the advantages of being high in intercepting capability, high in filtering precision, good in outlet water quality and wide in application range.

Description

technical field [0001] The invention belongs to water treatment filtering equipment, and is a circulating filter layer filter, which is suitable for filtering various suspended solids, colloids and other particulate matter in water. Background technique [0002] The filter material layer of existing water treatment filter equipment is all stacked or fixed in the pond body of filter tank, as quartz sand, fiber ball, comet filter material, fiber bundle and filter cloth etc. The process is: filter → filter layer cleaning → filter circulation process. The existing filtering equipment mainly has the following problems: 1. The strength of the filter layer formed by stacking loose filter materials should not be too large during cleaning, otherwise chaotic layers and material running will occur, so the cleaning effect is poor; 2. The filter layer can reach Saturation requires cleaning and regeneration, and the equipment cannot work continuously; 3. The thickness of the filter layer...

AI Technical Summary

Problems solved by technology

The existing filtering equipment mainly has the following problems: 1. The strength of the filter layer formed by stacking loose filter materials should not be too large during cleaning, otherwise chaotic layers and material running will occur, so the cleaning effect is poor; 2. The filter layer can reach Saturation requires cleaning and regeneration, and the equipment cannot work continuously; 3. The thickness of the filter layer determines the interception capacity and filtration accuracy. The thicker the filter layer, the greater the head loss, the higher the height of the equipment, and the thinner the filter layer, the greater the interception capacity and filtration accuracy. The lower the filtration accuracy; 4. When the turbidity of raw water exceeds 50NTU, the filter layer will fail in a short time; 5. The filtered water must be water after coagulation and sedimentation treatment; 6. It cannot be used for water containing Filtration of sewage such as sludge, algae, sand and gravel

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