WO2013089147A1 - 送液ポンプ及び液体クロマトグラフ - Google Patents
送液ポンプ及び液体クロマトグラフ Download PDFInfo
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- WO2013089147A1 WO2013089147A1 PCT/JP2012/082234 JP2012082234W WO2013089147A1 WO 2013089147 A1 WO2013089147 A1 WO 2013089147A1 JP 2012082234 W JP2012082234 W JP 2012082234W WO 2013089147 A1 WO2013089147 A1 WO 2013089147A1
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- WIPO (PCT)
- Prior art keywords
- liquid
- pump
- plunger
- pump chamber
- pump head
- Prior art date
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Classifications
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- 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
- F04B53/02—Packing the free space between cylinders and pistons
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- 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
- F04B13/00—Pumps specially modified to deliver fixed or variable measured quantities
-
- 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
- F04B53/14—Pistons, piston-rods or piston-rod connections
- F04B53/143—Sealing provided on the piston
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- 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
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- 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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/26—Conditioning of the fluid carrier; Flow patterns
- G01N30/28—Control of physical parameters of the fluid carrier
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/26—Conditioning of the fluid carrier; Flow patterns
- G01N30/28—Control of physical parameters of the fluid carrier
- G01N30/32—Control of physical parameters of the fluid carrier of pressure or speed
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/26—Conditioning of the fluid carrier; Flow patterns
- G01N30/28—Control of physical parameters of the fluid carrier
- G01N30/32—Control of physical parameters of the fluid carrier of pressure or speed
- G01N2030/326—Control of physical parameters of the fluid carrier of pressure or speed pumps
Definitions
- the present invention relates to a liquid feed pump that feeds liquid by sliding a plunger in a pump head and repeatedly sucking liquid from the suction port and discharging liquid from the discharge port, and a liquid chromatograph using the liquid feed pump. It relates to graphs.
- FIG. 1 A schematic cross-sectional view of the vicinity of a pump chamber of a general liquid feed pump is shown in FIG.
- a pump body 18 and a pump head 8 are provided.
- a cross head that reciprocates in one direction is accommodated in the pump body 18 by the cam mechanism, and the plunger 3 is held at the tip of the cross head. .
- the plunger 3 reciprocates in the axial direction with the operation of the crosshead.
- the pump head 8 is provided with a pump chamber 8a for storing the sucked liquid, and a suction port 8b and a discharge port 8c which are flow paths leading from the outside to the pump chamber 8a.
- the distal end of the plunger 3 penetrates the distal end of the pump body 18 and is inserted into the pump chamber 8 a in the pump head 8. As the tip of the plunger 3 slides in the pump chamber 8a, liquid is sucked from the suction port 8b and discharged from the discharge port 8c.
- a plunger seal 13 for preventing liquid from leaking out from a gap between the inner wall of the pump chamber 8a and the outer periphery of the plunger 3 is attached to a portion where the plunger 3 of the pump chamber 8a is inserted.
- the plunger seal 13 is a ring-shaped resin member having a through hole for allowing the plunger 3 to pass therethrough.
- the plunger seal 13 is sandwiched between the pump head 8 and the pump body 18 that holds the pump head 8. Further, a backup ring for enhancing the sealing performance of the plunger seal 13 may be inserted into the back surface portion of the plunger seal 13. In that case, the plunger seal 13 is clamped between the backup ring and the pump head. The backup ring is urged toward the plunger seal 13 by the pump body, and the plunger seal 13 is urged toward the pump head 8 by the backup ring.
- the plunger seal 13 is composed of a cylindrical protrusion protruding toward the pump head along the axial direction of a through hole provided in the center, and a flange provided at the base end of the protrusion.
- the seal mounting portion for mounting the plunger seal 13 of the pump head 8 is provided with a recess for fitting the protrusion of the plunger seal 13.
- the plunger seal 13 mounted on the seal mounting portion is such that the outer peripheral surface of the projecting portion is in close contact with the inner peripheral surface of the concave portion of the seal mounting portion, and the flange portion is in close contact with the peripheral surface of the concave portion of the seal mounting portion. Liquid leakage from the chamber 8a is prevented.
- the plunger seal 13 becomes easy to move as the plunger 3 reciprocates, and a slight gap is formed between the plunger seal 13 and the wall surface of the pump head 8.
- a mobile phase a mixture of a highly volatile acid (for example, trifluoroacetic acid, acetic acid, formic acid, etc.) and an organic solvent may be used.
- a highly volatile acid for example, trifluoroacetic acid, acetic acid, formic acid, etc.
- an organic solvent may be used.
- the mixed solution penetrates into the gap between the plunger seal 13 and the pump head 8 only the solvent component is volatilized, and the metal wall of the pump head 8 is corroded or etched by the acid remaining in the gap. I found out that there was a case.
- corrosion or etching of the metal wall surface of the pump head 8 occurs, liquid leakage from between the plunger seal 13 and the wall surface of the pump head 8 occurs.
- an object of the present invention is to prevent corrosion and etching of the wall surface of the pump head and prevent deterioration of the sealing performance of the plunger seal.
- a liquid feed pump of the present invention includes a liquid inlet for sucking liquid, a pump chamber for storing liquid sucked from the liquid inlet, and a pump head having a liquid outlet for discharging liquid in the pump chamber; A plunger whose tip side is inserted into the pump head and sliding in the pump head; and a plunger seal configured in a ring shape and sealing a gap between the pump head and the plunger while holding the plunger in a central hole thereof; A seal mounting portion provided at a portion of the pump head where the plunger is inserted into the pump chamber, having a wall surface that receives the plunger seal, and the wall surface is covered with a film made of an acid-resistant material. .
- the “ring shape” does not refer to a strict shape, but refers to a shape of a rotating body having a hole through which a plunger is inserted at the center and having a predetermined thickness. It is used in the meaning including the one having a flange portion protruding from the body portion of the ring as shown in the embodiment.
- the reason why the acid resistant material is used is that it can be used even when the liquid to be fed contains an acid.
- the liquid chromatograph of the present invention includes an analysis channel, a liquid feed pump for feeding a mobile phase to the analysis channel, a sample injection unit for injecting a sample into the analysis channel, and a sample on the analysis channel
- An analysis column that is provided on the downstream side of the injection section and separates the sample for each component, and a detection that is provided further downstream than the analysis column on the analysis flow path and detects the components separated by the analysis column.
- the liquid feed pump of the present invention is used as a liquid feed pump.
- the wall surface that receives the plunger seal of the seal mounting portion for mounting the plunger seal is covered with a film made of an acid-resistant material, so the gap between the plunger seal and the wall surface of the pump head Even if a liquid containing an acid permeates, the acid prevents the wall of the pump head from being corroded or etched. Thereby, liquid feeding can be performed accurately over a long period of time.
- liquid feed pump of the present invention since the liquid feed pump of the present invention having the above effects is used, high liquid feed accuracy is maintained over a long period of time, and the reliability of the analysis result can be improved.
- a material selected from the group consisting of precious metals, diamond-like carbon (hereinafter referred to as DLC), and engineering plastics resistant to acids can be used as the acid-resistant material.
- a noble metal suitable as an acid resistant material is gold, platinum, rhodium or iridium.
- the noble metals include eight kinds of metals such as gold, silver, ruthenium, rhodium, palladium, osmium, iridium and platinum. Of these metals, gold, platinum, rhodium and iridium are particularly excellent in resistance to acids. Therefore, it is suitable for the film material that prevents corrosion and etching of the wall surface of the pump head.
- engineering plastics having acid resistance include polyamide (PA), ultra high molecular weight polyethylene (U-PE), polyethersulfone (PES), polyphenylene sulfide (PPS), polyarylate (PAR), polyamideimide ( PAI), polyetheretherketone (PEEK), polytetrafluoroethylene (PTFE), liquid crystal polymer (LCP), polyvinylidene fluoride (PVDF), and the like.
- PA polyamide
- U-PE polyethersulfone
- PPS polyphenylene sulfide
- PAR polyarylate
- PAI polyamideimide
- PEEK polyetheretherketone
- PTFE polytetrafluoroethylene
- LCP liquid crystal polymer
- PVDF polyvinylidene fluoride
- the pump head is made of a metal made of stainless steel or the like
- the inner wall surface of the pump chamber is a metal surface.
- the plunger is formed of ceramic or sapphire. Therefore, the plunger whose outer peripheral surface slides with the inner wall surface of the pump chamber is a consumable item that needs to be replaced after being used for a certain period due to wear.
- a film made of an acid resistant material may be formed on the wall surface in the pump chamber together with the seal mounting portion.
- the inner wall surface of the pump chamber which is a metal surface
- the acid resistant material film By covering the inner wall surface of the pump chamber, which is a metal surface, with the acid resistant material film, wear of the plunger sliding with the inner wall surface of the pump chamber can be suppressed, and the life of the plunger can be extended.
- diamond-like carbon has a low friction coefficient, so the frictional force when the plunger contacts the wall surface of the pump chamber is reduced, the life of the plunger can be extended, and the load on the motor that drives the plunger is reduced. can do.
- the liquid delivery pump of this embodiment is configured by mounting a pump head 8 with a cleaning chamber 12 sandwiched at the tip of a pump body 2.
- a pump chamber 8 a is provided in the pump head 8.
- a cross head 4 is movably accommodated in the pump body 2.
- the cross head 4 is biased in a direction away from the pump head 8 (right direction in the figure) by an elastic body 6 such as a spring.
- a cam mechanism is provided on the base end side of the crosshead 4.
- the cam mechanism is a mechanism that rotationally drives the cam by a drive mechanism such as a motor. Since the cross head 4 is biased toward the cam mechanism by the elastic body 6, the base end portion of the cross head 4 follows the peripheral surface of the rotating cam. As a result, the crosshead 4 reciprocates in the direction approaching the pump head 8 in the pump body 2 and the direction away from the pump head 8 in the pump body 2 according to the rotation of the cam.
- the base end of the plunger 3 is held at the tip of the crosshead 4.
- the distal end portion of the plunger 3 penetrates the distal end of the pump body 2 and the cleaning chamber 12 and is inserted into the pump chamber 8 a inside the pump head 8.
- the tip of the plunger 3 slides along the wall surface of the pump chamber 8 a as the crosshead 4 operates.
- the pump head 8 is also provided with a liquid inlet channel 8b for sucking the liquid into the pump chamber 8a and a liquid outlet channel 8c for extruding the liquid from the pump chamber 8a.
- the liquid inlet channel 8b includes a check valve 9a including a spherical valve body and a valve seat for seating the valve body.
- the liquid outlet channel 8c includes a check valve 9b having the same structure as the check valve 9a.
- the check valves 9a and 9b are provided as a part of the pump head 8 in the figure, they may be attached to the pump head 8 from the outside.
- the plunger seal 10 is attached to the plunger 3 insertion portion of the pump chamber 8a.
- a backup ring 11 is inserted on the back side (pump body 2 side) of the plunger seal 10.
- the plunger seal 10 is for preventing liquid leakage from the gap between the inner wall of the pump chamber 8 a and the peripheral surface of the plunger 3.
- the back surface of the backup ring 11 is supported by the wall surface of the cleaning chamber 12.
- the plunger seal 10 is urged toward the pump chamber 8 a by the backup ring 11.
- the cleaning chamber 12 includes a flow path for flowing the cleaning liquid and a space for cleaning the outer peripheral surface of the plunger 3 passing therethrough with the cleaning liquid.
- a cleaning seal 16 that slidably holds the outer peripheral surface of the plunger 3 is provided in the plunger 3 insertion portion in the internal space of the cleaning chamber 12 to prevent leakage of the cleaning liquid.
- the back surface of the cleaning seal 16 is supported by the wall surface of the pump body 2.
- the plunger seal 10 is made of an elastic material such as polyethylene resin, and is a ring-shaped member having a hole for allowing the plunger 3 to pass therethrough.
- a central portion of the plunger seal 10 is provided with a cylindrical protrusion 10a protruding in the axial direction of the plunger 3 and a flange 10b provided at the base end of the protrusion 10a.
- a space 10c having a rectangular cross section that opens along the circumference of the protrusion 10a is provided on the pump chamber 8a side of the protrusion 10a.
- the space 10c stores liquid leaking from between the inner wall of the pump chamber 8a and the outer periphery of the plunger 3, and uses the increase in pressure in the pump chamber 8a to It is provided for the purpose of improving the adhesion between the plunger 3.
- a seal mounting portion 8d having a recess 15a for fitting the protrusion 10a of the plunger seal 10 is provided in a portion where the plunger 3 is inserted into the pump chamber 8a of the pump head 8. It has been.
- the protrusion 10a of the plunger seal 10 attached to the seal attachment portion 8d is fitted into the recess 15a, and the outer peripheral surface of the protrusion 10a is in close contact with the inner peripheral surface 15b of the recess 15a.
- the inner peripheral surface 15b of the recess 15a and the surface 15c around the recess 15a of the seal mounting portion 8d that is in close contact with the plunger seal 10 are covered with an acid-resistant material film 14 (shown by a thick line in FIG. 1).
- the plunger 3 has a diameter of 2 mm and the recess 8d has a diameter of 4 mm.
- the film thickness of the acid resistant material film 14 is, for example, about 3 ⁇ m.
- the material of the acid resistant material film 14 include noble metals such as gold, platinum, rhodium, and iridium, or DLC.
- the acid-resistant material film 14 made of the above-mentioned noble metal or DLC can be formed by, for example, an ionization vapor deposition method in addition to a PVD (Physical vapor deposition) process or a CVD (Chemical vapor deposition) process.
- an ionization vapor deposition method in addition to a PVD (Physical vapor deposition) process or a CVD (Chemical vapor deposition) process.
- the acid resistant material film 14 made of an engineering plastic such as PEEK or PTFE can be formed by powder coating.
- the acid-resistant material film 14 may also be formed on the inner surface of the pump chamber 8a, as shown by a thick line in FIG. In this embodiment, an acid-resistant material film 14 is formed on the inner peripheral surface and the deep bottom surface of the pump chamber 8a.
- the acid resistant material film 14 may be formed of a noble metal such as gold, platinum, rhodium or iridium, or an engineering plastic such as PEEK or PTFE.
- a liquid feed pump 20 is provided on the analysis flow path 24.
- the liquid feed pump 20 sends the mobile phase 22 in the analysis flow path 24.
- a sample injection unit 26 is provided on the analysis flow path 24 on the downstream side of the liquid feed pump 20.
- An analysis column 28 is provided on the downstream side of the sample injection portion 26 on the analysis flow path 24.
- a detector 30 is provided further downstream than the analysis column 28 on the analysis flow path 24.
- the sample injection unit 26 is realized by, for example, one port (injection port) among a plurality of ports provided in a switching valve constituting an autosampler. In that case, the sample is injected into the sample injection unit 26 by the needle of the autosampler. The injected sample once stays in the sample loop. Thereafter, the switching valve is switched to configure the analysis flow path 24, and the mobile phase 22 is fed by the liquid feed pump 20, whereby the sample retained in the sample loop is guided to the analysis column 28. In the analysis column 28, the sample is separated for each component, and each component is detected by the detector 30.
- the liquid flow rate of the mobile phase flowing through the analysis channel affects the detection signal obtained by the detector 30, the liquid flow rate of the mobile phase needs to be maintained with high accuracy.
- the liquid feed pump of the embodiment of FIG. 1 or 2 is used as the liquid feed pump 20
- the plunger of the pump head of the liquid feed pump The metal wall surface of the seal mounting portion is not corroded or etched by acid, liquid leakage from the outer peripheral portion of the plunger seal is prevented, and the liquid feeding accuracy of the liquid feeding pump is maintained for a long period of time. Thereby, the reliability of the analysis result of a liquid chromatograph increases.
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Abstract
Description
ポンプボディ18とポンプヘッド8を備えている。図示は省略されているが、ポンプボディ18内にはカム機構によって一方向(図において左右方向)で往復動を行なうクロスヘッドが収容されており、クロスヘッドの先端にプランジャ3が保持されている。プランジャ3はクロスヘッドの動作に伴なってその軸方向に往復動する。
耐酸性材料を使用するのは、送られる液が酸を含む場合にも使用できるようにするためである。
まず、図1Aに示されているように、この実施例の送液ポンプは、ポンプボディ2の先端に洗浄チャンバ12を挟んでポンプヘッド8が装着されて構成されている。ポンプヘッド8内にはポンプ室8aが設けられている。ポンプボディ2内にクロスヘッド4が移動可能に収容されている。
プランジャシール10は例えばポリエチレン樹脂などの弾性材料で構成され、プランジャ3を貫通させるための孔をもつリング状の部材である。プランジャシール10の中央部に、プランジャ3の軸方向へ突起した円柱形状の突起部10aと、突起部10aの基端に設けられたフランジ部10bを備えている。突起部10aのポンプ室8a側に、突起部10aの円周に沿って開口した矩形断面をもつ空間10cが設けられている。空間10cは、ポンプ室8aの内壁とプランジャ3の外周との間から漏れてきた液を貯留するとともに、ポンプ室8a内の圧力の上昇を利用してプランジャシール10とポンプヘッド8の内壁面やプランジャ3との間の密着性を高める目的で設けられている。
送液ポンプ20が分析流路24上に設けられている。送液ポンプ20は分析流路24において移動相22を送液する。分析流路24上で送液ポンプ20の下流側に試料注入部26が設けられている。分析流路24上の試料注入部26の下流側に分析カラム28が設けられている。分析流路24上の分析カラム28よりもさらに下流側に検出器30が設けられている。
3 プランジャ
4 クロスヘッド
6 弾性体
8 ポンプヘッド
8a ポンプ室
8b 液入口流路
8c 液出口流路
8d シール装着部
9a,9b チェック弁
10 プランジャシール
10a 突起部
10b フランジ部
11 バックアップリング
12 洗浄チャンバ
14 耐酸性材料膜
15a シール装着部凹部
15b 凹部内周面
15c 凹部周囲面
16 洗浄シール
Claims (6)
- 液体を吸入するための液入口、前記液入口から吸入された液を貯留するためのポンプ室及び前記ポンプ室内の液を吐出するための液出口を備えたポンプヘッドと、
前記ポンプヘッドに先端側が挿入され前記ポンプヘッド内で摺動するプランジャと、
リング形状に構成されその中心の孔で前記プランジャを保持しながら前記ポンプヘッドとプランジャとの間の隙間を封止するプランジャシールと、
前記ポンプヘッドの前記ポンプ室へ前記プランジャが挿入されている部分に設けられ、前記プランジャシールを受け入れる壁面をもち、該壁面が耐酸性材料からなる膜で被覆されているシール装着部と、を備えた送液ポンプ。 - 前記耐酸性材料は、貴金属、ダイヤモンドライクカーボン及び酸に対して耐性を有するエンジニアリングプラスチックからなる群から選ばれた材料である請求項1に記載の送液ポンプ。
- 前記貴金属は、金、白金、ロジウム及びイリジウムからなる群から選ばれた材料である請求項2に記載の送液ポンプ。
- 前記エンジニアリングプラスチックは、ポリエーテルエーテルケトン及びポリテトラフルオロエチレンからなる群から選ばれた材料である請求項2に記載の送液ポンプ。
- 前記ポンプ室内の壁面にも前記耐酸性材料からなる膜が形成されている請求項1から4のいずれか一項に記載の送液ポンプ。
- 分析流路と、
前記分析流路に移動相を送液するための送液ポンプであって請求項1から5のいずれか一項に記載の送液ポンプと、
前記分析流路に試料を注入するための試料注入部と、
前記分析流路上における前記試料注入部の下流側に設けられ、試料を成分ごとに分離するための分析カラムと、
前記分析流路上における前記分析カラムよりもさらに下流側に設けられ、前記分析カラムで分離された成分を検出するための検出器と、を備えた液体クロマトグラフ。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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CN201280059230.4A CN103975161B (zh) | 2011-12-12 | 2012-12-12 | 送液泵以及液相色谱仪 |
US14/349,945 US9689384B2 (en) | 2011-12-12 | 2012-12-12 | Liquid feed pump and liquid chromatograph |
JP2013549288A JP5610092B2 (ja) | 2011-12-12 | 2012-12-12 | 送液ポンプ及び液体クロマトグラフ |
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JPPCT/JP2011/078654 | 2011-12-12 | ||
PCT/JP2011/078654 WO2013088487A1 (ja) | 2011-12-12 | 2011-12-12 | 送液ポンプ及び液体クロマトグラフ |
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WO2013089147A1 true WO2013089147A1 (ja) | 2013-06-20 |
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PCT/JP2011/078654 WO2013088487A1 (ja) | 2011-12-12 | 2011-12-12 | 送液ポンプ及び液体クロマトグラフ |
PCT/JP2012/082234 WO2013089147A1 (ja) | 2011-12-12 | 2012-12-12 | 送液ポンプ及び液体クロマトグラフ |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2017210931A (ja) * | 2016-05-26 | 2017-11-30 | 株式会社島津製作所 | バックアップリング及びそのバックアップリングを用いた送液ポンプ |
JP2020516882A (ja) * | 2017-04-07 | 2020-06-11 | アイデックス ヘルス アンド サイエンス エルエルシー | 構造補強体を伴う生体適合性構成要素 |
JP2021088936A (ja) * | 2019-12-02 | 2021-06-10 | リップラップ カンパニー ソシエテ アノニムRIPRUP Company S.A. | 計量ポンプ |
US11703485B2 (en) | 2017-04-07 | 2023-07-18 | Idex Health & Science Llc | Biocompatible component with structural reinforcement |
US11905946B2 (en) | 2018-11-08 | 2024-02-20 | Shimadzu Corporation | Backup ring and liquid feeding pump using backup ring |
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DE102014016141A1 (de) * | 2014-10-30 | 2016-05-04 | Khs Corpoplast Gmbh | Kolbenanordnung zum Pumpen einer Flüssigkeit |
SI3298276T1 (sl) * | 2015-05-21 | 2021-08-31 | Henkel IP & Holding GmbH | Izničevalni protipovratni ventil |
US20170074403A1 (en) * | 2015-09-14 | 2017-03-16 | Waters Technologies Corporation | Seal assembly for supercritical fluid chromatography |
WO2017130316A1 (ja) * | 2016-01-27 | 2017-08-03 | 株式会社島津製作所 | 圧力制御バルブ及び超臨界流体クロマトグラフ |
EP3663578B1 (en) | 2018-12-06 | 2021-10-06 | Riprup Company S.A. | Micrometering pump |
JP7286808B2 (ja) * | 2019-12-27 | 2023-06-05 | 京セラ株式会社 | プランジャ、ポンプ、および液体分析装置 |
CN111336078B (zh) * | 2020-03-03 | 2022-02-25 | 大连依利特分析仪器有限公司 | 一种双柱塞液相色谱输液泵及该泵调控方法以及泵系统 |
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JP2017210931A (ja) * | 2016-05-26 | 2017-11-30 | 株式会社島津製作所 | バックアップリング及びそのバックアップリングを用いた送液ポンプ |
JP2020516882A (ja) * | 2017-04-07 | 2020-06-11 | アイデックス ヘルス アンド サイエンス エルエルシー | 構造補強体を伴う生体適合性構成要素 |
JP7046096B2 (ja) | 2017-04-07 | 2022-04-01 | アイデックス ヘルス アンド サイエンス エルエルシー | 構造補強体を伴う生体適合性構成要素 |
US11703485B2 (en) | 2017-04-07 | 2023-07-18 | Idex Health & Science Llc | Biocompatible component with structural reinforcement |
US11905946B2 (en) | 2018-11-08 | 2024-02-20 | Shimadzu Corporation | Backup ring and liquid feeding pump using backup ring |
JP2021088936A (ja) * | 2019-12-02 | 2021-06-10 | リップラップ カンパニー ソシエテ アノニムRIPRUP Company S.A. | 計量ポンプ |
JP7469752B2 (ja) | 2019-12-02 | 2024-04-17 | リップラップ カンパニー ソシエテ アノニム | 計量ポンプ |
Also Published As
Publication number | Publication date |
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WO2013088487A1 (ja) | 2013-06-20 |
CN103975161B (zh) | 2017-05-31 |
US9689384B2 (en) | 2017-06-27 |
US20140260565A1 (en) | 2014-09-18 |
CN103975161A (zh) | 2014-08-06 |
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