Three-position five-path valve

Abstract

The invention discloses a three-position five-path valve and a full-automatic running water treatment system controlled by the three-position five-path valve. The three-position five-path valve comprises a valve body, wherein a cavity is arranged in the valve body; the cavity is internally provided with a valve element and a valve housing; the valve element and the valve housing are in sliding fit; the valve element is provided with a running water communicating passage, a water filtering communicating passage and a water drainage communicating passage; one side of the running water communicating passage is also provided with a pressure reducing structure; the full-automatic running water treatment system comprises the three-position five-path valve, a water purifying assembly and a subsequent water consumption unit; the valve element and the valve housing are prevented from being damaged by overhigh water pressure of running water due to the pressure reducing structure arranged on the valve element of the three-position five-path valve; and the full-automatic running water treatment system can ensure that water treatment medium is in an optimal purifying work state, regularly performs back flush and forward flush on water filtering medium, and clears harmful substances accumulated in the water filtering medium in time, so that the water filtering medium is recovered to be in the optimal purifying state.

Description

technical field [0001] The invention relates to a control valve, in particular to a three-position five-way valve. Background technique [0002] The water purification treatment process is the process of removing or reducing harmful pollutants in water through physical, chemical and biological methods according to the pollution status of different water sources and the specific requirements of users for water quality. [0003] In the tap water treatment system, when the organic matter adsorbed by the water filter medium reaches a certain limit, the water filter medium will lose its purification function. After the organic matter adsorbed on the water filter medium is saturated, if it is not replaced in time, new pollution will be generated Therefore, in order to ensure stable and reliable water quality after purification, it is necessary to ensure that the water treatment medium is in the best purification working condition. Forward flushing and forward flushing are used to...

AI Technical Summary

Problems solved by technology

[0005] Chinese Invention Patent Application Publication CN1644969.A discloses a three-position five-way rotary angle valve, which controls the cycle conversion among three different working states of purification, reverse flushing, and forward flushing through electromagnetic and manual control. , but there is no pressure relief mechanism on the spool, when the water pressure of tap water entering the spool through the water inlet is too high, it is easy to cause damage to the spool and valve sleeve

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