WO2011013162A1 - プランジャ駆動式計量ポンプ - Google Patents

プランジャ駆動式計量ポンプ Download PDF

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Publication number
WO2011013162A1
WO2011013162A1 PCT/JP2009/003526 JP2009003526W WO2011013162A1 WO 2011013162 A1 WO2011013162 A1 WO 2011013162A1 JP 2009003526 W JP2009003526 W JP 2009003526W WO 2011013162 A1 WO2011013162 A1 WO 2011013162A1
Authority
WO
WIPO (PCT)
Prior art keywords
pump
plunger
head
metering pump
pump head
Prior art date
Application number
PCT/JP2009/003526
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
前田愛明
冨田眞巳
Original Assignee
株式会社島津製作所
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 株式会社島津製作所 filed Critical 株式会社島津製作所
Priority to CN200980160574.2A priority Critical patent/CN102472270B/zh
Priority to PCT/JP2009/003526 priority patent/WO2011013162A1/ja
Priority to US13/387,547 priority patent/US20120118141A1/en
Priority to JP2011524535A priority patent/JPWO2011013162A1/ja
Publication of WO2011013162A1 publication Critical patent/WO2011013162A1/ja

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
    • F04B53/162—Adaptations of cylinders
    • F04B53/164—Stoffing boxes

Definitions

  • the present invention relates to a plunger-driven metering pump that performs metering and liquid feeding by reciprocating a plunger.
  • a plunger-driven metering pump is often used as a mechanism for measuring a liquid and feeding the liquid to an analytical instrument.
  • the plunger-driven metering pump reciprocates the plunger in the pump chamber and continuously feeds a constant amount of liquid.
  • FIG. 1 is an exploded perspective view of a conventional plunger-driven pump
  • FIG. 2 is a cross-sectional view thereof.
  • the plunger-driven pump includes a pump body 1, a plunger 2, a pump head 3, a plunger seal 4 and a seal holder 5, a bolt 6 for attaching the pump head 3 to the pump body 1, and the like.
  • the pump head 3 has a pump chamber 31 inside, and includes a liquid suction port 32 for sucking liquid into the pump chamber 31 and a liquid discharge port 33 for discharging liquid from the pump chamber 31.
  • the plunger seal 4 is held by a seal holder 5 and maintains the liquid tightness of the pump chamber 31.
  • the pump head 3 is attached to the pump body 1 with a plurality of fixtures 6 such as bolts, for example. Accordingly, when the tightening force of the plurality of bolts 6 is uneven, the pump head 3 is attached to the pump body 1 with an inclination, and the plunger seal 4 is deformed by applying an uneven force to the plunger seal 4. Occurs. The deformation of the plunger seal 4 leads to leakage of liquid from the pump chamber 31, damage to the plunger seal 4, and shortened life.
  • the present invention has been made in view of the above problems, and an object of the present invention is to reduce the trouble of correctly attaching the pump head to the pump body.
  • the plunger-driven metering pump according to the present invention is a plunger-driven metering pump that feeds liquid by reciprocating the plunger in the pump chamber.
  • a pump body that supports the plunger so as to reciprocate;
  • a cylindrical head mounting portion provided at one end of the pump body and having an external thread portion on the outer peripheral portion;
  • a pump head attached to the head attaching portion via a seal and having the pump chamber inside; It has a cylindrical fixing tool which is inserted in the outer periphery of the pump head and has an engaging part engaging with the pump head and an internal thread part engaged with the external thread part on the inner peripheral surface.
  • the pump head may have a flange that is locked by the locking portion.
  • the cylindrical fixture is composed of a large hole portion having a large inner diameter and a small hole portion having a small inner diameter.
  • the locking portion may be a boundary portion between the large hole portion and the small hole portion.
  • the pump head is fixed to the cylindrical head mounting portion provided in the pump body with a single cylindrical fixture. Therefore, unlike the conventional case where the fixing is performed with a plurality of bolts, it is not necessary to consider the uniformity of the tightening force. Further, the pump head is attached to the pump body by screwing a female screw provided on the inner peripheral surface of the cylindrical fixture and a male screw provided on the outer peripheral portion of the head mounting portion. Therefore, a tool is not required at the time of attachment, and labor for correctly attaching the pump head is reduced.
  • the fragmentary sectional view of the conventional plunger drive type metering pump. The disassembled perspective view of the plunger drive type metering pump which concerns on one Example of this invention.
  • the fragmentary sectional view of the plunger drive type metering pump concerning one example of the present invention.
  • the perspective view of the fixing tool which concerns on one Example of this invention.
  • the fragmentary sectional view of the plunger drive type metering pump concerning the 1st modification of the present invention.
  • FIG. 3 is an exploded perspective view of the plunger-driven metering pump according to the present embodiment
  • FIG. 4 is a sectional view thereof
  • FIG. 5 is a perspective view of the fixing device according to the present embodiment.
  • the plunger-driven metering pump of this embodiment is greatly different from the conventional example in that the pump head 9 is fixed to the pump body 1 with a single fixture 7.
  • a protrusion 8 is integrally provided at one end of the pump body 1.
  • the protruding portion 8 includes a cylindrical portion 81 and a large-diameter portion 82 having a larger outer diameter than the cylindrical portion 81.
  • the large diameter portion 82 is provided at the tip of the cylindrical portion 81, and a male screw groove 83 is formed on the outer periphery.
  • a recess for accommodating the cylindrical seal holder 5 is provided on the pump head 9 side of the protruding portion 8.
  • the plunger 2 is supported by the pump body 1 so as to be able to reciprocate.
  • the tip of the plunger 2 protrudes from the protrusion 8.
  • the pump head 9 has a cylindrical shape, and has a flange 94 having an outer diameter substantially the same as that of the large-diameter portion 82 of the cylindrical portion 8 at one end thereof.
  • a recess for accommodating the seal holder 5 and a pump chamber 91 are provided inside the pump head 9.
  • the pump head 9 has a liquid suction port 92 for sucking liquid into the pump chamber 91 and a liquid discharge port 93 for discharging liquid from the pump chamber 91.
  • the seal holder 5 is cylindrical, has a through hole 51 extending in the axial direction, and the seal 4 is held on the pump head 9 side.
  • the seal 4 has a convex shape, and the convex side is directed to the pump body side.
  • the fixture 7 has a nut shape and has a through hole in the center.
  • the through hole is composed of a large hole portion 71 having a large inner diameter size and a small hole portion 73 having a small inner diameter size.
  • the inner diameter of the large hole portion 71 is set slightly larger than the outer diameter of the large diameter portion 82, and a female screw groove 72 that engages with the male screw groove 83 is cut on the inner peripheral surface thereof.
  • the thickness of the portion of the large hole 71 where the female screw groove 72 is not provided is set slightly larger than the thickness of the flange 94 of the pump head 9, and the inner diameter of the small hole 73 is slightly smaller than the outer diameter of the pump head 9. Is set to be large. Four flat surfaces are machined on the outer periphery of the fixture 7 so that the fixture 7 can be easily tightened.
  • the fixture 7 is made of resin and is manufactured as a single product.
  • the pump head 9 is attached to the pump body 1 as follows. First, the seal holder 5 is fitted into the recess of the projecting portion 8 of the pump body 1 while the tip of the plunger 2 is inserted through the through hole 51 of the seal holder 5. Next, the pump head 9 is attached. Specifically, the plunger 2 protruding from the tip of the seal holder 5 is fitted into the pump chamber 91 of the pump head 9, the seal holder 5 is fitted into the recess of the pump head 9, and the flange 94 is brought into contact with the end of the large diameter portion 82. .
  • the fixture 7 is inserted from the tip of the pump head 9, and the female screw groove 72 and the male screw groove 83 of the large diameter portion 82 are screwed together.
  • a stepped portion (hereinafter referred to as a stepped portion 74) at the boundary between the large hole portion 71 and the small hole portion 73 abuts on the flange 94 of the pump head 9.
  • the fixing tool 7 is strongly tightened until the flange 94 presses the large diameter portion 82. Thereby, a pump head is firmly fixed with respect to a protrusion part.
  • the pump head 9 since the pump head 9 is attached to the pump body 1 with the single fixture 7, the pump head 9 can be correctly attached to the pump body 1 without considering the balance of the fastening force of the fixture. Therefore, the force applied to the plunger seal 4 is also equalized, and the plunger seal 4 can be prevented from being deformed. In addition, since a skillful technique or tool for fastening the fixing tool 7 is not required, the pump head 9 can be easily attached only by manual work, and the labor of attachment can be reduced.
  • Such an effect is particularly beneficial when the diameter of the plunger 2 is large (for example, 6 mm or more). This is because, when the diameter of the plunger 2 is large, the plunger seal 4 and the pump head 9 are correspondingly enlarged, so that the influence of the inclination of the pump head 9 is increased, and the problem of deformation of the plunger seal 4 is likely to occur.
  • the fixture 7 can also be used when the pump head 9 of the flange 94 having a smaller thickness than the portion of the large hole portion 71 where the female screw 72 is not provided is fixed to the protruding portion 8. Also in this case, when the fixing tool 7 is tightened, the stepped portion 74 comes into contact with the flange 94 (see FIG. 6), so that the pump head 9 can be fixed to the protruding portion 8.
  • the fixture 7 can be applied to the pump head 9 in which the outer diameter of the flange 94 is smaller than that of the large diameter portion 82. Also in this case, since a part of the stepped portion 74 of the fixture 7 abuts on the flange 94 (see FIG. 7), the pump head 9 can be fixed to the protruding portion 8.
  • the fixture 7 according to the present invention can be used even when the flanges are slightly different in one size.
  • the form for implementing this invention using an Example and a modification was demonstrated, this invention is not limited to said example, A change is accept
  • the outer dimensions of the projecting portions 8 of the pump body 1 may all be the same.
  • the shape of the pump head 9 does not need to be cylindrical as a whole, and it is sufficient if only a portion fixed by the fixture 7, that is, only a portion on the pump body 1 side is cylindrical. In that case, the tip of the pump head 9 must be large enough to fit the fixture 7.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Reciprocating Pumps (AREA)
PCT/JP2009/003526 2009-07-27 2009-07-27 プランジャ駆動式計量ポンプ WO2011013162A1 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN200980160574.2A CN102472270B (zh) 2009-07-27 2009-07-27 柱塞驱动式计量泵
PCT/JP2009/003526 WO2011013162A1 (ja) 2009-07-27 2009-07-27 プランジャ駆動式計量ポンプ
US13/387,547 US20120118141A1 (en) 2009-07-27 2009-07-27 Plunger-type measuring pump
JP2011524535A JPWO2011013162A1 (ja) 2009-07-27 2009-07-27 プランジャ駆動式計量ポンプ

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2009/003526 WO2011013162A1 (ja) 2009-07-27 2009-07-27 プランジャ駆動式計量ポンプ

Publications (1)

Publication Number Publication Date
WO2011013162A1 true WO2011013162A1 (ja) 2011-02-03

Family

ID=43528845

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2009/003526 WO2011013162A1 (ja) 2009-07-27 2009-07-27 プランジャ駆動式計量ポンプ

Country Status (4)

Country Link
US (1) US20120118141A1 (zh)
JP (1) JPWO2011013162A1 (zh)
CN (1) CN102472270B (zh)
WO (1) WO2011013162A1 (zh)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104024847B (zh) * 2011-12-26 2017-11-21 株式会社岛津制作所 流路切换阀
US11319951B2 (en) * 2017-11-29 2022-05-03 Shimadzu Corporation Plunger pump
JP2021076028A (ja) * 2019-11-05 2021-05-20 シナノケンシ株式会社 プランジャポンプ

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS588277A (ja) * 1981-07-06 1983-01-18 Noboru Kimura プランジヤ−式計量ポンプ
JPH05321824A (ja) * 1992-05-15 1993-12-07 Nikkiso Co Ltd 往復動ポンプ
JPH09137782A (ja) * 1995-11-15 1997-05-27 Shimadzu Corp プランジャ往復動型ポンプの製造方法
JP2000064965A (ja) * 1998-05-18 2000-03-03 Yasunaga Corp プランジャポンプ用ポンプエレメント組立体
JP2003515699A (ja) * 1999-11-30 2003-05-07 マイクロリス・コーポレイション 高粘度の流体をポンピングするための装置および方法
JP2004500516A (ja) * 2000-03-10 2004-01-08 スペイト、クリストファー 薬品計量ポンプ
JP2004183563A (ja) * 2002-12-03 2004-07-02 Nippon Pillar Packing Co Ltd ポンプ
JP2008025515A (ja) * 2006-07-24 2008-02-07 Noiberuku Kk 液体吐出装置
JP2008506068A (ja) * 2004-07-09 2008-02-28 サン−ゴバン パフォーマンス プラスティックス コーポレイション 精密供給ポンプ

Family Cites Families (10)

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Publication number Priority date Publication date Assignee Title
US2056936A (en) * 1934-06-01 1936-10-13 Irving M Hayward Motor-pump unit
US4915591A (en) * 1986-01-08 1990-04-10 Saphirwerk Industrieprodukte Ag Reciprocating pump and control using outlet valve position sensors
DE8912315U1 (de) * 1989-10-17 1989-11-30 Hewlett-Packard GmbH, 7030 Böblingen Dichtungsanordnung für eine Kolbenpumpe
GB2275310B (en) * 1993-02-19 1996-01-10 Duracell Batteries Ltd Pumps
JP3728827B2 (ja) * 1996-09-30 2005-12-21 株式会社島津製作所 送液ポンプ
JP3783303B2 (ja) * 1996-10-29 2006-06-07 株式会社島津製作所 プランジャ型送液ポンプ
US6000916A (en) * 1998-02-06 1999-12-14 Optimize Technologies, Inc. Pump head quick connect assembly
DE19960510C1 (de) * 1999-12-15 2001-05-10 Terra Ag Fuer Tiefbautechnik S Rammgerät
US6544229B1 (en) * 2000-05-01 2003-04-08 Baxter International Inc Linearly motile infusion pump
US20050276705A1 (en) * 2003-05-27 2005-12-15 Ropintassco 2, Llc. Positive displacement pump having piston and/or liner with vapor deposited polymer surface

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS588277A (ja) * 1981-07-06 1983-01-18 Noboru Kimura プランジヤ−式計量ポンプ
JPH05321824A (ja) * 1992-05-15 1993-12-07 Nikkiso Co Ltd 往復動ポンプ
JPH09137782A (ja) * 1995-11-15 1997-05-27 Shimadzu Corp プランジャ往復動型ポンプの製造方法
JP2000064965A (ja) * 1998-05-18 2000-03-03 Yasunaga Corp プランジャポンプ用ポンプエレメント組立体
JP2003515699A (ja) * 1999-11-30 2003-05-07 マイクロリス・コーポレイション 高粘度の流体をポンピングするための装置および方法
JP2004500516A (ja) * 2000-03-10 2004-01-08 スペイト、クリストファー 薬品計量ポンプ
JP2004183563A (ja) * 2002-12-03 2004-07-02 Nippon Pillar Packing Co Ltd ポンプ
JP2008506068A (ja) * 2004-07-09 2008-02-28 サン−ゴバン パフォーマンス プラスティックス コーポレイション 精密供給ポンプ
JP2008025515A (ja) * 2006-07-24 2008-02-07 Noiberuku Kk 液体吐出装置

Also Published As

Publication number Publication date
US20120118141A1 (en) 2012-05-17
CN102472270B (zh) 2015-07-08
JPWO2011013162A1 (ja) 2013-01-07
CN102472270A (zh) 2012-05-23

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