| 摘要 |
<p>PURPOSE:To improve durability of an expansible/contractible elastic body and prevent leak and secure the sure press-feeding by forming an expansible/contractible elastic body into a horizontal spread form and expanding and contracting the elastic body of the working fluid outside through the positive or negative pressure and sucking and discharging a press-fed fluid through the opening and closing of a basic edge part. CONSTITUTION:An expansible/contractible elastic body 3' is expanded/contracted between stoppers 4' by the reciprocative action of the positive and negative pressure of the working fluid 6 in a casing 2', and the press-fed fluid 12 supplied from a press- fed fluid tank 11 of slurry, etc., is supplied into the expansible/contractible body by opening closing device at the basic edge part 26'. In the next cycle, the expansible/ contractible elastic body 3' contacts, and the closing device at the basic edge part 26 on one side is opened, and the press-fed fluid 12 in the expansible/contractible elastic body 3' is surely press-fed into a processing device such as a filter press in the next stage. During this time, the expansible/contractible elastic body 3' is not fatigued even in the respective use in high frequency due to the expansion or contraction in the thickness direction, and the sealing performance of the press-fed fluid 12 such as slurry at the basic edge parts 26a and 26' is secured.</p> |
