JP2014051950A5 - - Google Patents

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Publication number
JP2014051950A5
JP2014051950A5 JP2012198289A JP2012198289A JP2014051950A5 JP 2014051950 A5 JP2014051950 A5 JP 2014051950A5 JP 2012198289 A JP2012198289 A JP 2012198289A JP 2012198289 A JP2012198289 A JP 2012198289A JP 2014051950 A5 JP2014051950 A5 JP 2014051950A5
Authority
JP
Japan
Prior art keywords
bellows
ring
pump chamber
pump
pressure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2012198289A
Other languages
Japanese (ja)
Other versions
JP2014051950A (en
Filing date
Publication date
Application filed filed Critical
Priority to JP2012198289A priority Critical patent/JP2014051950A/en
Priority claimed from JP2012198289A external-priority patent/JP2014051950A/en
Publication of JP2014051950A publication Critical patent/JP2014051950A/en
Publication of JP2014051950A5 publication Critical patent/JP2014051950A5/ja
Pending legal-status Critical Current

Links

Description

In such a bellows pump, the bottom wall of the plastic bellows is deformed, for example, when the pump chamber is pressurized in the discharge process and / or when the pump chamber is depressurized (negative pressure) in the suction process. There was a possibility of causing. For example, in the discharge process in which the bellows is contracted, the bottom wall of the bellows may be pressed by the pressure in the pump chamber and bend in a convex shape, and conversely, in the suction process in which the bellows expands, Therefore, there is a possibility that the bottom wall of the bellows is sucked and bent into a concave shape. Alternatively, if means for extending and retracting the bellows is an air cylinder Organization, the pressurized air to the air supply and exhaust space, there is a fear causing deformation such as bend the bottom wall of a plastic bellows. For example, when the pressure in the supply / exhaust space is smaller than the pressure in the pump chamber in the discharge process in which the bellows is contracted, the bottom wall of the bellows is pressed by the pressurized air into the supply / exhaust space and bent into a concave shape in the pump chamber. There is a risk. Thus, when the bottom wall of the bellows is deformed in this way, the amount of liquid delivered (discharged fluid) or the amount of circulating fluid by the bellows pump is not stable, and variation cannot be achieved. .

Claims (1)

  1. Said annular sealing member is an O-ring, characterized in that said O-ring is engaged with and held by the O-ring groove formed in the bottom wall or working plate of the bellows, according to claim 1 or claim 2 Bellows pump.
JP2012198289A 2012-09-10 2012-09-10 Bellows pump Pending JP2014051950A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2012198289A JP2014051950A (en) 2012-09-10 2012-09-10 Bellows pump

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP2012198289A JP2014051950A (en) 2012-09-10 2012-09-10 Bellows pump
TW102128069A TW201410976A (en) 2012-09-10 2013-08-06 Bellows pump
KR1020130106575A KR20140034070A (en) 2012-09-10 2013-09-05 Bellows pump
CN201310403659.7A CN103671041A (en) 2012-09-10 2013-09-06 Bellows pump
US14/021,679 US20140072465A1 (en) 2012-09-10 2013-09-09 Bellows Pump
EP20130004383 EP2706235A1 (en) 2012-09-10 2013-09-09 Bellows pump

Publications (2)

Publication Number Publication Date
JP2014051950A JP2014051950A (en) 2014-03-20
JP2014051950A5 true JP2014051950A5 (en) 2015-05-28

Family

ID=49165486

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2012198289A Pending JP2014051950A (en) 2012-09-10 2012-09-10 Bellows pump

Country Status (6)

Country Link
US (1) US20140072465A1 (en)
EP (1) EP2706235A1 (en)
JP (1) JP2014051950A (en)
KR (1) KR20140034070A (en)
CN (1) CN103671041A (en)
TW (1) TW201410976A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3179105B1 (en) * 2014-08-08 2019-05-29 Nippon Pillar Packing Co., Ltd. Bellows pump device
JP6046856B1 (en) 2015-03-10 2016-12-21 株式会社イワキ Volumetric pump
DE102015004868A1 (en) * 2015-04-13 2016-10-13 Bernd Niethammer Pump for an SCR system in vehicles
TWI626372B (en) 2015-04-13 2018-06-11 徐郁輝 A kind of floatable water bags which have foldable layer structure
JPWO2018143422A1 (en) * 2017-02-03 2019-11-21 イーグル工業株式会社 Liquid supply system

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3081974A (en) * 1959-09-08 1963-03-19 Dezurik Corp Sealing means for gate valves
JPH0269081U (en) * 1988-11-15 1990-05-25
CN2077045U (en) * 1990-04-27 1991-05-15 郑国亮 Hand pump valve pipe
JP3519364B2 (en) 2000-12-05 2004-04-12 株式会社イワキ Bellows pump
JP4644697B2 (en) * 2007-06-06 2011-03-02 日本ピラー工業株式会社 Reciprocating pump
JP4547451B2 (en) * 2007-11-22 2010-09-22 シグマテクノロジー有限会社 Bellows pump and operation method of bellows pump
US8636484B2 (en) * 2009-01-09 2014-01-28 Tom M. Simmons Bellows plungers having one or more helically extending features, pumps including such bellows plungers, and related methods
JP4982515B2 (en) * 2009-02-24 2012-07-25 日本ピラー工業株式会社 Bellows pump
JP5315550B2 (en) * 2009-06-10 2013-10-16 株式会社イワキ Double reciprocating pump
JP5559020B2 (en) 2010-12-07 2014-07-23 日本ピラー工業株式会社 Bellows pump

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