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2. 发明公开

EP1156217A1 FLUID DEVICE WITH BELLOWS 有权
标题翻译：带有波纹的流体装置
公开(公告)号：EP1156217A1
公开(公告)日：2001-11-21
申请号：EP00976354.1
申请日：2000-11-20
申请人： NIPPON PILLAR PACKING CO., LTD.
发明人： NISHIO, Kiyoshi, Nippon Pillar Packing Co., Ltd , FUJII, Makoto, Nippon Pillar Packing Co., Ltd , KATSURA, Masayoshi, Nippon Pillar Packing Co., Ltd , KAWAMURA, Hitoshi, Nippon Pillar Packing Co., Ltd
IPC分类号： F04B43/08 , F04B9/14
CPC分类号： F15B1/103 , F04B43/0063 , F04B43/084 , F04B43/088 , F15B2201/205 , F15B2201/3153
摘要： It is an object of the invention to, even in the case where transported liquid containing a sedimenting material such as slurry is used, prevent the sedimenting material from stagnating and collecting in an extending and contracting portion of a bellows. In order to attain the object, a bellows 7 that is extendingly and contractingly deformable in the axial direction is placed in a pump body 1 with setting the axis B of the bellows vertical so as to be driven to perform extending and contracting deformation, and form a liquid chamber 9 inside the bellows 7. A suction port 18 and a discharge port 19 are formed in an inner bottom face 4a of the pump body 1 facing the liquid chamber 9. Liquid is sucked from the suction port 18 into the liquid chamber 9 by extension of the bellows 7, and the liquid in the liquid chamber 9 is discharged from the discharge port 1 by contraction of the bellows 7. The extending and contracting portion of the bellows 7 which is configured by forming ridge-like folds 71 and valley-like folds 72 in a vertically alternate and continuous manner is formed into a shape in which the lower one of upper and lower lamella portions 71a and 71b of each of the ridge-like folds 71, or the lower lamella portion 71b is downward inclined as moving toward the axis B, not only in an extending state but also in a contracting state. Even in the case where liquid containing a sedimenting material such as slurry is used, therefore, the sedimenting material can be prevented from sedimenting and stagnating in the extending and contracting portion of the bellows 7.
摘要翻译：本发明的目的在于，即使在使用含有泥浆等沉降材料的输送液体的情况下，也能够防止沉降材料滞留并收集到波纹管的伸缩部。为了实现该目的，通过将波纹管的轴线B设置成竖直从而被驱动以执行伸缩变形，将能够在轴向方向上伸缩地收缩变形的波纹管7放置在泵体1中，并且形成一个位于波纹管7内部的液体室9.一个吸入口18和一个排出口19形成在泵体1的面向液体室9的内底面4a中。液体从吸入口18吸入液体室9 通过波纹管7的延伸，液体室9中的液体通过波纹管7的收缩而从排出口1排出。波纹管7的延伸和收缩部分通过形成脊状褶皱71和谷部垂直交替且连续的方式形成的褶皱72形成为这样的形状：其中，每个脊状褶皱71或下部片层部分71b的上部和下部薄片部分71a和71b中的下部片层部分71a和71b处于向下 d随着朝向轴线B移动而倾斜，不仅处于伸展状态，而且处于收缩状态。因此，即使在使用含有泥浆等沉降材料的液体的情况下，也能够防止沉降材料在波纹管7的伸缩部分沉降滞留。

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