Water purifier with purifying, forward washing and backward washing functions

Abstract

The invention relates to a water purifier with purifying, forward washing and backward washing functions. A first valve ring, a second valve ring and a third valve ring are sequentially arranged on a valve element in a sleeving manner, and a first sealing ring, a second sealing ring, a third sealing ring, a fourth sealing ring and a fifth sealing ring are fixedly arranged on the inner wall of a valve. A controller capable of controlling the valve element to move enables passages of all channels inside the valve to be changed in directions after the position of the valve element is converted, and further the flow direction is conveniently set, and thus the functions of purifying water, forwards or backwards washing purifying tanks, and the like are realized. Meanwhile, the water purifier is provided with a plurality of purifying tanks, so as to be capable of realizing washing of multiple kinds of impurities in water once and multiple times of purifying; impurities accumulated in all the purifying tanks can be forcefully carried away due to backwards washing, and thus the purifying quality is favorably ensured, especially, a forwards washing procedure is added after the backwards washing, a small amount of sewage or impurities deposited on the bottoms of the tanks after being backwards washed are thoroughly removed, the purifying quality can be further ensured, and the service life of a filter material can be prolonged.

Description

technical field [0001] The invention relates to a water purifier, in particular to a water purifier with functions of purifying, forward washing and backwashing. Background technique [0002] Water purification can remove sand particles, suspended particles of organic matter, parasites, giardia baskets, cryptosporidium, bacteria, algae, viruses and fungi, minerals such as calcium, silica, magnesium and some toxic Metals such as lead, copper and chromium, residual chlorine in tap water, etc. The water purifier in the prior art has a structure with a purification tank and a valve. The valve can only control the positive flow of water in the purification tank to achieve purification, but cannot adjust the flow direction of the water to clean the filter material. Long-term use of such a The purifier reduces the purification effect and affects the life of the filter material. Contents of the invention [0003] The invention overcomes the deficiencies of the prior art and prov...

AI Technical Summary

Problems solved by technology

The water purifier in the prior art has a structure with a purification tank and a valve. The valve can only control the positive flow of water in the purification tank to achieve purification, but cannot adjust the flow direction of the water to clean the filter material. Long-term use of such a The purifier reduces the purification effect and affects the life of the filter material

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