JP2002001072A5

JP2002001072A5 -

Info

Publication number: JP2002001072A5
Application number: JP2000182702A
Authority: JP
Filing date: 2000-06-19
Publication date: 2007-06-14
Anticipated expiration: 2020-06-19

Description

支持布９の繊維方向とセル枠３の内側の縁３１の方向とが互いに違えるとは、具体的には、前記支持布９の縦糸１１の繊維方向Ｘ−Ｘと、前記セル枠３の縦方向部材３１ａの内側の縁３１１ａの方向Ｙ−Ｙとのなす角度ａが、５〜４５度、好ましくは１０〜４５度、更に好ましくは３０〜４５度のものである。角度ａがこの範囲であれば、例え、脱塩室と濃縮室に圧力差が生じるような運転下において、セル枠の内側の縁がイオン交換膜に食い込み切断力が加わっても、容易には破れることがない。また、角度ａが５度以上であれば、組付け後、脱塩室に被処理水が供給され、支持布９が膨潤したり、濃縮室の圧力による押圧を受けて、多少の位置がずれることがあっても、支持布９の繊維方向とセル枠３の内側の縁３１の方向とが合うようなことはない。また、セル枠の横方向部材３１ｂの内側の縁方向に対しては、支持布９の横糸１２の繊維方向で上記と同様に定義される。なお、図２中、符号１３部分は繊維方向を示す説明のためのもので、支持布９の一部に示すに止めた。 The direction of the inner edge 31 of the fiber direction and the cell frame 3 supporting the cloth 9 and is made different from each other, specifically, the fiber direction X-X of the longitudinal yarns 11 of the supporting cloth 9, the cell frame 3 The angle a between the inner edge 311a of the vertical member 31a and the direction YY is 5 to 45 degrees, preferably 10 to 45 degrees, and more preferably 30 to 45 degrees. If the angle a is within this range, even if the inner edge of the cell frame bites into the ion exchange membrane and a cutting force is applied, for example, under an operation in which a pressure difference occurs between the desalting chamber and the concentrating chamber, the angle a is easily changed. There is no tear. If the angle a is 5 degrees or more, after assembly, the water to be treated is supplied to the desalting chamber, and the support cloth 9 swells or is pressed by the pressure of the concentrating chamber, so that the position is slightly shifted. Even if this happens, the fiber direction of the support cloth 9 does not match the direction of the inner edge 31 of the cell frame 3. In addition, with respect to the inner edge direction of the horizontal member 31b of the cell frame, the fiber direction of the weft 12 of the support cloth 9 is defined in the same manner as described above. In FIG. 2, reference numeral 13 is used for describing the fiber direction and is shown in a part of the support cloth 9.