Non-valve filter with double filter layers

Abstract

The invention relates to the technical field of water treatment, and in particular relates to a non-valve filter with double filter layers used for water treatment. The filter comprises a water inlet pipe, a filter unit and a siphon system, wherein the water inlet pipe is located at the left upper part of the filter; a baffle is arranged at the opening of the water inlet branch pipe; homogeneous ceramsite filter material is located above a lower filter plate; an upper filter plate is located under a top cover; four clear water pipes run through the upper and lower filter plates and the filter material; a first water distribution chamber is located between the outer wall of the filter and the inner ring; a second water distribution chamber is located in an inner ring of the filter and above the filter material; a clear water chamber is located in the inner ring and under the lower filter plate; a water outlet is located at the right side of a flushing tank; the flushing tank is communicated with the clear water pipes; a siphon rising pipe is connected with a siphon down pipe and communicated with a top cover of the filter unit; the end of the siphon down pipe is provided with a washing intensity regulator and immersed in a drainage weir; a siphon break funnel is located at the left upper part of the flushing tank and connected with a siphon break pipe; an exhaust pipe and a siphon auxiliary pipe are located at the left side of the filter. The filter realizes automation of whole process of filtering and back flushing, is simple in operation, and is economical and practical.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a double filter layer valveless filter for water treatment. Background technique [0002] With the development of the economy and the increase of the population, water resources are in short supply in many areas, and some urban drinking water sources are seriously polluted, and the safety of drinking water for residents is threatened. The "Drinking Water Sanitation Standard" (GB5749-85) issued in 1985 can no longer meet the needs of safeguarding the health of the people. To this end, the state issued a new "Drinking Water Hygienic Standards" (GB5749-2006). Compared with the old standard, the new standard adds 11 new indicators, and some indicators have stricter restrictions. Higher standards mean better handling techniques and workmanship. However, in relatively backward and remote areas such as rural areas and mountainous areas, traditional gravity valvele...

AI Technical Summary

Problems solved by technology

However, for the valveless filter, due to the thin filter layer, the traditional filter material quartz sand is easy to plate, the replacement cycle is short, and the sand runs out during backwashing, etc., resulting in low filtration efficiency and difficult water discharge in the valveless filter. Meet the requirements of "Drinking Water Sanitation Standard" (GB5749-2006)

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