JP2019211081A5 - - Google Patents

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JP2019211081A5
JP2019211081A5 JP2019101649A JP2019101649A JP2019211081A5 JP 2019211081 A5 JP2019211081 A5 JP 2019211081A5 JP 2019101649 A JP2019101649 A JP 2019101649A JP 2019101649 A JP2019101649 A JP 2019101649A JP 2019211081 A5 JP2019211081 A5 JP 2019211081A5
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JP
Japan
Prior art keywords
seal
pinch valve
tubular body
strain
ring
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JP2019101649A
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Japanese (ja)
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JP7377009B2 (en
JP2019211081A (en
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図8は、曲率Rと全閉押圧力Fとの関係を示す図であり、図9は、曲率とひずみEとの関係を示す図である。「全閉押圧力」とは、駆動部5によって駆動された押圧部4によって管体3を変形させ、ピンチバルブ1を全閉状態にするのに必要な押圧力をいい、「ひずみ」とは全閉状態において、管体3の最も変形している部分、例えば、押圧部4の先端部が当接する管体3の部分におけるひずみをいう。ひずみEは、変形前後の長さの変化分を、変形前の長さで割った値である。 FIG. 8 is a diagram showing the relationship between the curvature R and the fully closed pressing pressure F, and FIG. 9 is a diagram showing the relationship between the curvature R and the strain E. The "fully closed pressing pressure" means the pressing force required to deform the tubular body 3 by the pressing portion 4 driven by the driving unit 5 to bring the pinch valve 1 into the fully closed state, and "strain" is In the fully closed state, it refers to the strain in the most deformed portion of the tubular body 3, for example, the portion of the tubular body 3 with which the tip end portion of the pressing portion 4 abuts. The strain E is a value obtained by dividing the change in length before and after deformation by the length before deformation.

第2実施形態によるピンチバルブ100は、通常使用時に密閉性を確保するための1次シールに加え、管体3が破裂した場合に備えた2次シールであるシール部を有する。それによって、管体3が破裂したとしても、管体3の内部の流体がピンチバルブ100の外部へ流出することがない。具体的には、ピンチバルブ100は、シール部として、第1シール部材である環状突起133と、第2シール部材であるOリング25と、第4シール部材であるOリング17とを有し、これらは管体3の外面近傍の空間と、ピンチバルブ100の外部との流体連通をシールする。なお、上述したように、第2実施形態によるピンチバルブ100は、第1実施形態の第3シール部材であるOリング29に相当する構成を有していない。環状突起133をOリングに代えてもよい。 The pinch valve 100 according to the second embodiment has, in addition to a primary seal for ensuring airtightness during normal use, a seal portion which is a secondary seal in case the tubular body 3 ruptures. As a result, even if the pipe body 3 bursts, the fluid inside the pipe body 3 does not flow out to the outside of the pinch valve 100. Specifically, the pinch valve 100 has an annular protrusion 133 as a first seal member, an O-ring 25 as a second seal member, and an O-ring 17 as a fourth seal member as a seal portion. , These seal the fluid communication between the space near the outer surface of the tubular body 3 and the outside of the pinch valve 100. As described above, the pinch valve 100 according to the second embodiment does not have a configuration corresponding to the O-ring 29 which is the third seal member of the first embodiment. The annular projection 133 may be replaced with an O-ring.

JP2019101649A 2018-05-31 2019-05-30 pinch valve Active JP7377009B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2018105150 2018-05-31
JP2018105150 2018-05-31

Publications (3)

Publication Number Publication Date
JP2019211081A JP2019211081A (en) 2019-12-12
JP2019211081A5 true JP2019211081A5 (en) 2022-03-15
JP7377009B2 JP7377009B2 (en) 2023-11-09

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JP2019101649A Active JP7377009B2 (en) 2018-05-31 2019-05-30 pinch valve

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021156338A (en) 2020-03-26 2021-10-07 旭有機材株式会社 valve
JP2021156339A (en) 2020-03-26 2021-10-07 旭有機材株式会社 Pinch valve
US20230250883A1 (en) * 2022-02-04 2023-08-10 Terumo Bct, Inc. Pinch Valve

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0336663B1 (en) * 1988-04-05 1994-08-24 Whitey Co. Valve for fluids
JPH1089503A (en) * 1996-09-18 1998-04-10 Sekisui Chem Co Ltd Valve
CN2641404Y (en) 2003-09-18 2004-09-15 温州市双屿防腐设备制造公司 Pneuamtic tube clamping valve
DE102007002765B3 (en) * 2007-01-18 2008-04-10 Festo Ag & Co. Pinch valve for use as cannula connecting piece in medical applications, has housing wall limiting operating space, and position detection unit provided for contactless detection of operating position of impact unit
JP5901119B2 (en) * 2011-01-21 2016-04-06 旭有機材工業株式会社 Pinch valve tube, pinch valve, and fluid control device
DE102011015385A1 (en) * 2011-03-29 2012-10-04 Festo Ag & Co. Kg pinch
JP2015209892A (en) * 2014-04-25 2015-11-24 大木工業株式会社 Pinch valve device

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