JPH03117167U - - Google Patents

Info

Publication number
JPH03117167U
JPH03117167U JP2609990U JP2609990U JPH03117167U JP H03117167 U JPH03117167 U JP H03117167U JP 2609990 U JP2609990 U JP 2609990U JP 2609990 U JP2609990 U JP 2609990U JP H03117167 U JPH03117167 U JP H03117167U
Authority
JP
Japan
Prior art keywords
diaphragm
fluid passage
center plate
plunger
switching valve
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
JP2609990U
Other languages
Japanese (ja)
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 filed Critical
Priority to JP2609990U priority Critical patent/JPH03117167U/ja
Publication of JPH03117167U publication Critical patent/JPH03117167U/ja
Pending legal-status Critical Current

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  • Multiple-Way Valves (AREA)

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本考案に係るガスクロマトグラフ用切
換弁の一実施例を示す断面図、第２図ａ，ｂは要
部拡大断面図で、ａはプランジヤによる流体通路
の閉止状態、ｂはガス圧による開成状態を示す図
、第３図はガスクロマトグラフ用切換弁の従来例
を示す断面図である。 ２……センタープレート、３〜６……ダイヤフ
ラム、７，８……空気圧受入室、２０〜２３……
プレート、２５Ａ……第１流路、２５Ｂ……第２
流路、２５Ｃ……第３流路、２６……プランジヤ
収納孔、２７……連通溝、２８……凹部、３０…
…Ｏリング、３１……環状溝、３２……Ｏリング
、Ｄ１〜Ｄｎ，Ｅ１〜Ｅｎ……プランジヤ、Ａ１
〜Ａｎ……流体通路。 FIG. 1 is a sectional view showing an embodiment of the gas chromatograph switching valve according to the present invention, and FIGS. 2 a and 2 b are enlarged sectional views of the main parts, where a is a state in which the fluid passage is closed by the plunger, and b is a gas pressure FIG. 3 is a sectional view showing a conventional example of a switching valve for a gas chromatograph. 2... Center plate, 3-6... Diaphragm, 7, 8... Air pressure receiving chamber, 20-23...
Plate, 25A...first channel, 25B...second
Channel, 25C...Third channel, 26...Plunger storage hole, 27...Communication groove, 28...Recess, 30...
... O-ring, 31 ... Annular groove, 32 ... O-ring, D 1 - Dn, E 1 - En ... Plunger, A 1
 ~An...Fluid passage.

Claims (1)

【実用新案登録請求の範囲】 センタープレートを挟んで設けたダイヤフラム
をガス圧によつて弾性変形させることにより前記
センタープレートに形成した流体通路を開き、プ
ランジヤによつて前記ダイヤフラムを押圧するこ
とにより前記流体通路を閉鎖するようにしたガス
クロマトグラフ用切換弁において、 前記センタープレートのダイヤフラムが接する
面に前記プランジヤと同軸の環状溝を設け、この
環状溝に前記ダイアフラムに弾性的に当接するＯ
リングを嵌着したことを特徴とするガスクロマト
グラフ用切換弁。[Claims for Utility Model Registration] A fluid passage formed in the center plate is opened by elastically deforming a diaphragm provided between the center plate by gas pressure, and by pressing the diaphragm with a plunger, the fluid passage is opened. In a switching valve for a gas chromatograph configured to close a fluid passage, an annular groove coaxial with the plunger is provided on a surface of the center plate in contact with the diaphragm, and an O is provided in the annular groove to elastically abut against the diaphragm.
A gas chromatograph switching valve characterized by a fitted ring.
JP2609990U 1990-03-16 1990-03-16 Pending JPH03117167U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2609990U JPH03117167U (en) 1990-03-16 1990-03-16

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2609990U JPH03117167U (en) 1990-03-16 1990-03-16

Publications (1)

Publication Number Publication Date
JPH03117167U true JPH03117167U (en) 1991-12-04

Family

ID=31529010

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2609990U Pending JPH03117167U (en) 1990-03-16 1990-03-16

Country Status (1)

Country Link
JP (1) JPH03117167U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06185650A (en) * 1992-07-29 1994-07-08 Protein Technologies Inc Valve matrix simultaneously synthesizing dna sequence or peptide arrangement
JP2001519878A (en) * 1997-04-04 2001-10-23 ロボバルブ アクチエボーラグ Diaphragm valve
JP2007285416A (en) * 2006-04-17 2007-11-01 Hitachi Metals Ltd Cutoff valve device and mass flow rate control device incorporated with this device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06185650A (en) * 1992-07-29 1994-07-08 Protein Technologies Inc Valve matrix simultaneously synthesizing dna sequence or peptide arrangement
JP2001519878A (en) * 1997-04-04 2001-10-23 ロボバルブ アクチエボーラグ Diaphragm valve
JP2007285416A (en) * 2006-04-17 2007-11-01 Hitachi Metals Ltd Cutoff valve device and mass flow rate control device incorporated with this device

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