Rural drinking water filtering system

Abstract

The invention discloses a rural drinking water filtering system. The system at least comprises two filtering devices with the same structure, water inlets in the bottoms of lower sealing heads of thetwo filtering devices are connected with first ends of respective three-way valves respectively, second ends of the respective three-way valves are connected with a backwashing drainage pipe, and third ends of the respective three-way valves are connected with a water inlet pipe; the first end of a venturi tube is connected with a water inlet valve, the second end of the venturi tube is connectedwith a projection pump added with a flocculating agent, and the third end of the venturi tube is connected with a water inlet pipe; and water outlets in the bottoms of the two filtering devices are connected into a clean water tank through valves, and backwash wastewater flows to a discharge pipe. At least two devices in the system are in linkage for filtering treatment, backwash water of one device can be supplied by clear water obtained by treatment of the other device, and a backwash high-level water tank or a backwash water pump directly taking water from a clear water tank does not need to be arranged; water inlet and backwashing drainage are designed by adopting an internal drainage tube, so that the installation and maintenance of valves are facilitated, and smooth backwashing drainage flow is ensured. The system is also suitable for filtering in other similar water purification processes.

Description

technical field [0001] The invention relates to a drinking water filtering device, in particular to a rural drinking water filtering system. Background technique [0002] Drinking water safety in rural areas is closely related to the health of thousands of households. At present, most of the drinking water sources in rural areas are mountain spring water, mountain pit water, and river water. The water body is directly exposed to the natural environment, and is easily polluted by sand and mud on the mountain surface, as well as human and animal activities, especially in the rainy season. A large amount of sediment poured in, and the water source became turbid or even yellow, and it was not suitable for direct drinking. Therefore, there will be an increasing demand for drinking water filtration devices in rural areas. In order to facilitate automatic operation, rural drinking water stations, especially small drinking water stations at the village level, usually use valveless...

AI Technical Summary

Problems solved by technology

This type of filter not only has a complex structure and high investment costs, but also has poor cleaning effect and a large amount of backwash water, which not only affects the quality of effluent water, but also is not conducive to water saving.

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