Patent ID: 9669336
Date: 2017-06-06
CPC Classifications: B01D,C02F

Claim:
1. A water purifier, comprising: a first filter tank and a second filter tank for filtrating liquid; a flow system including, at least, a first channel in which the liquid is filtrated in at least one of the first filter tank and the second filter tank, a second channel in which the liquid is filtrated in the second filter tank and the first filter tank is washed, and a third channel in which the liquid is filtrated in the first filter tank and the second filter tank is washed; a plurality of valve mechanisms configured to be opened and closed so as to perform switching among the first, second, and third channels; and a switching portion including an operating portion configured to be operated by a user of the water purifier and a rotating shaft rotatable together with the operating portion to actuate the plurality of valve mechanisms to perform the switching among the first, second, and third channels such that the channels are selected cyclically in order of the first channel, the second channel, the first channel, the third channel and the first channel, each of the valve mechanisms working in junction with the operation of the switching portion; wherein the plurality of valve mechanisms are positioned within a single case; wherein each of the valve mechanisms includes an inlet through which liquid flows from the flow system into the valve mechanism, an outlet through which the liquid flows out of the valve mechanism into the flow system, a cam fixed to the rotating shaft, a cam guide surrounding a part of the rotating shaft and a part of the cam, and a blocking portion fixed to the cam guide and configured to open or close the inlet or the outlet, and wherein operation of the operating portion allows the cam guide and the blocking portion to move in conjunction with rotation of the rotating shaft and the cam, and the movement of the cam guide and the blocking portion allows the blocking portion to open or close the inlet or the outlet.