| 摘要 |
PROBLEM TO BE SOLVED: To provide a filter device for drinking water for passing and filtering raw water to the inside from the outside of an elastic ring-like part.SOLUTION: The filter device for the drinking water comprises a container, a support tool installed in the container and connected to a cleaning pipe line and an elastic filter member interposed between a fixed support plate and a movable support plate for constituting the support tool and having a large number of elastic ring-like parts continuing over the other end part from one end part, and passes and filters the raw water to the inside from the outside of the elastic ring-like part. The filter device for the drinking water removes wash water to the outside of the elastic filter member by using a clearance of the elastic ring-like part elastically displaced in the extending direction by pressure of the wash water, by introducing the wash water inside the elastic filter member via the cleaning pipe line provided in the container, when removing an impurity stuck to the clearance of the elastic ring-like part or captured by the elastic ring-like part. |
