JPS62267581A - Precise measuring delivery device - Google Patents
Precise measuring delivery deviceInfo
- Publication number
- JPS62267581A JPS62267581A JP10969786A JP10969786A JPS62267581A JP S62267581 A JPS62267581 A JP S62267581A JP 10969786 A JP10969786 A JP 10969786A JP 10969786 A JP10969786 A JP 10969786A JP S62267581 A JPS62267581 A JP S62267581A
- Authority
- JP
- Japan
- Prior art keywords
- liquid
- valve body
- diaphragm
- suction port
- discharge
- 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
Links
- 239000007788 liquid Substances 0.000 claims abstract description 36
- 229920001971 elastomer Polymers 0.000 claims abstract description 7
- 239000000806 elastomer Substances 0.000 claims abstract description 7
- 230000008602 contraction Effects 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 238000011084 recovery Methods 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 2
- 239000011347 resin Substances 0.000 abstract description 3
- 229920005989 resin Polymers 0.000 abstract description 3
- NPNPZTNLOVBDOC-UHFFFAOYSA-N 1,1-difluoroethane Chemical compound CC(F)F NPNPZTNLOVBDOC-UHFFFAOYSA-N 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- PHAFDKCRJVKSSR-UHFFFAOYSA-N ethene hydrofluoride Chemical group F.C=C PHAFDKCRJVKSSR-UHFFFAOYSA-N 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔概要〕
本ｆｆｉ ＩＪＩは駆！ｈｒ′一段と、該駆動−Ｌ段に
より吸入された液体を精密に計；１シして吐出する計か
吐出部とからなる精密計量吐出装置において、前記計丑
吐出部は内部に作動室が形成された本体を有し、該作動
室には液体の吸入口及び吐出口が形成され、該吸入口は
前記駆動７段に応動する弁体により開閉され、弾力性を
有するエラストマからなるダイヤフラムの中央部が、漬
弁体に、また該ダイヤフラムの該周辺部がＩ絢記本体に
それぞれ１ノ４着されており、該ダイヤフラムは該弁体
の移動とともに伸縮し、特に該弁体が吸入口を閉じた後
の該ダイヤフラムの収縮回復力により作動室内の液体禿
吐出口から吐出するものであることを特徴とする。ダイ
ヤフラムの伸縮回復力により吐出される液体のｔｙ位叱
出噛は極めて微！−４であるから、例えば吐出回数の設
定により微ｊ’％、の液体を精度良く吐出させることが
ｉｌｌ濠となる。[Detailed Description of the Invention] [Summary] This ffi IJI is Kakeru! In a precision metering and dispensing device comprising one stage of hr' and a meter or discharge section that precisely measures and discharges the liquid sucked by the drive-L stage, the meter and discharge section has an operating chamber formed inside thereof. The working chamber has a liquid suction port and a liquid discharge port, and the suction port is opened and closed by a valve body that responds to the seven drive stages, and the center of a diaphragm made of an elastic elastomer. The peripheral part of the diaphragm is attached to the dipping valve body, and the peripheral part of the diaphragm is attached to the main body, and the diaphragm expands and contracts with the movement of the valve body. The liquid is discharged from the discharge port in the working chamber by the contraction recovery force of the diaphragm after closing. The amount of liquid discharged due to the expansion and contraction recovery power of the diaphragm is extremely small! -4, for example, by setting the number of times of ejection, it becomes ill moat to eject a small amount of liquid with high accuracy.
本発明は、精密計響吐出装置に関し、特に微礒の液体を
精密に計量して吐出する装置に関する。TECHNICAL FIELD The present invention relates to a precision metering discharge device, and more particularly to a device that precisely measures and discharges a small amount of liquid.
一般に滴定等において、微九１の液体を精密に計ｆｔ）
して吐出させる装置が必要とされるが、従来のこの種の
装置としては、ビユレット等の手動で液体を滴ドさせる
器具、あるいはポンプ式のもの（４４Ｆ開閉５８−６６
０２０号公報、特開昭５８−１７８８８８号公報等）な
どがある
（ ｆｉ １１が解決しようとする問題点〕しかしなが
ら、前者のものはｆ４ｈのため効率および再現性が悪く
、後者のものは複数個の弁が必要など機構が複雑で、特
に１回の吐出量を微にとするためには装置がかなり大が
かりとなり、高価となる問題がある。Generally, in titration, etc., precisely measure a liquid of 91 ft)
However, conventional devices of this type include devices that manually drip liquid, such as a billet, or pump type devices (44F opening/closing 58-66).
(Problems that fi 11 attempts to solve) However, the former has poor efficiency and reproducibility due to f4h, and the latter has multiple problems. The mechanism is complicated, such as requiring several valves, and in particular, in order to reduce the amount of discharge per discharge, the device becomes quite large and expensive.
木受Ｉｇ＋はかかる従来の問題点に鑑みて創作されたも
のであり、筒中な構成で穀量の液体を吐出することがで
きる精密計賃吐出装置の提供を１１的とする。The wooden receiver Ig+ was created in view of such conventional problems, and its eleventh purpose is to provide a precision metering discharge device capable of discharging the amount of liquid in a cylinder.
〔問題点を解決するための一′ｒ一段〕本発明は、駆動
手段と、該駆動・ト段により吸入された液体を精密に計
量して吐出する計ｒ１″Ｃ吐出部とからなる精密計−１
，吐出装置において、 ＋ｔｉｉ記計１吐出部は内部に
作動室が形成された本体を有し。[One step to solve the problem] The present invention provides a precision meter consisting of a drive means and a discharge section that precisely measures and discharges the liquid drawn in by the drive step. -1
In the discharge device, the discharge part has a main body in which an operating chamber is formed.
該作動室には液体の吸入口及び吐出口が形成され、該吸
入口は前記駆動手段に応動する弁体により開閉され、弾
力性を有するエラストマからなるダイヤフラムの中央部
が該弁体に、また該ダイヤフラムの該周辺部が前記本体
にそれぞれ固ｎされており、該ダイヤフラムは該弁体の
移動とともに伸縮し、特に該弁体が吸入［夏を閉じた後
の該ダイヤフラムの収縮回復力により作動室内の液体を
吐出口から吐出するものであることを特徴とする。A liquid suction port and a liquid discharge port are formed in the working chamber, and the suction port is opened and closed by a valve body that responds to the driving means, and a central portion of a diaphragm made of an elastic elastomer is connected to the valve body. The peripheral portions of the diaphragm are each fixed to the main body, and the diaphragm expands and contracts with the movement of the valve body, and is especially activated by the contraction recovery force of the diaphragm after the valve body closes the suction [summer]. It is characterized in that the liquid in the room is discharged from the discharge port.
駆動′「段によって弁体が応動して吸入口が開くと、作
動室に液体が流入する０次に駆動手段によって弁体が応
動して吸入口が閉じると、作業室への液体の流入は止ま
る。When the valve body responds to the actuation stage and the suction port opens, liquid flows into the working chamber. When the valve body responds to the driving means and the suction port closes, liquid does not flow into the working chamber. Stop.
ところで弁体が吸入口が開くときにはダイヤフラムは伸
張するが、弁体が吸入［１が閉じるときにはダイヤフラ
ムは収縮する。このときのダイヤフラムの収ｆｉ動作は
弁体の動きに連動するが、一定のタイムラグをもってい
る。このためダイヤフラムの収縮作用が作動室内の液体
に圧力として加わり、これにより作動室の吐出口から一
定の微雀の液体が吐出される。By the way, when the valve element's suction port opens, the diaphragm expands, but when the valve element's suction port [1] closes, the diaphragm contracts. The diaphragm's retracting operation at this time is linked to the movement of the valve body, but there is a certain time lag. Therefore, the contraction action of the diaphragm applies pressure to the liquid in the working chamber, and as a result, a certain amount of liquid is discharged from the discharge port of the working chamber.
第１図には木９．用の一実施例の断面図が示されている
。Figure 1 shows tree 9. A cross-sectional view of one embodiment is shown.
精密計丑吐出装ｍｌは、駆動−Ｌ段である゛電磁石２と
計埴吐出部とからなっている。電磁石２は右底円筒状の
カバー４を備え、該カバー４の内部にポビン５に巻回さ
れたコイル６とプランジャ７と圧縮スプリング８とスト
ッパ９とが収納されている。ポビン５の軸方向中央部に
は貫通孔が穿、；りされており、該貫通孔の内周面には
円筒状のスリーブｌＯが取り付けられていて、プランジ
ャ７は、スリーブｌＯの内部に摺動自在に設けられてい
る。コイル６が非通電状態のときは、プランジャ７はス
プリング８により、第１図において下方に押圧されてい
る。コイル６に通電されると、プランジャ７に加わる゛
屯磁力はスプリング８の押圧力に打ち勝ち、プランジャ
７は１方に移動し、プランジャ７の細径部７ａがストッ
パ９に当接した位置に位置決めされる。スト−、バ９は
、カバー４のＬｎ４ａに螺合されており、ロックナラ）
９ａにより固着されている。したがって、ロックナツト
９ａＩｊｔ緩めてストッパ９を回すことにより、ストッ
パ９の位ｌを任意に変えることができる。The precision meter discharge device ml consists of an electromagnet 2, which is the driving L stage, and a meter discharge section. The electromagnet 2 includes a cylindrical cover 4 at the bottom right, and a coil 6 wound around a pobbin 5, a plunger 7, a compression spring 8, and a stopper 9 are housed inside the cover 4. A through hole is bored in the axial center of the pobbin 5, and a cylindrical sleeve lO is attached to the inner peripheral surface of the through hole, and the plunger 7 slides inside the sleeve lO. It is set up so that it can move freely. When the coil 6 is de-energized, the plunger 7 is pressed downward in FIG. 1 by the spring 8. When the coil 6 is energized, the magnetic force applied to the plunger 7 overcomes the pressing force of the spring 8, and the plunger 7 moves in one direction and is positioned at a position where the narrow diameter portion 7a of the plunger 7 abuts against the stopper 9. be done. The stop bar 9 is screwed onto Ln4a of the cover 4, and is locked (locked).
It is fixed by 9a. Therefore, by loosening the lock nut 9aIjt and turning the stopper 9, the position l of the stopper 9 can be changed as desired.
計驕叱出部３は、有機孔１１が穿設された本体１２と有
機孔ｌｌ内に取り付けられた弁部材１３とを備えている
０本体１２には、それぞれ有機孔１１を外部と連通ずる
吸入孔１４及び吸入孔１４より若［太径の吐出孔１５が
穿設されておリ、吸入孔１４はパイプ１６を介して液タ
ンク１７に、吐出孔１５はパイプ１８を介してノズル１
９に連結されている。弁部材１３は、第２図に示されて
いるように、弁部材１３をプランジャ７に螺着されるた
め断面が波形に成形されたダイヤフラム１３ｃと、吸入
口１４ａを開閉する弁体１３ｂとから成っており、４フ
ツ化エチレン樹脂を一体成形型して作られている。弁部
材１３は丙定部１３ａの外径と対応した内径を有する有
気孔１１の大径部１１ａに挿入され、段部１１ｂとスペ
ーサ２０とにより位置決め固定されて有気孔１１とダイ
ヤフラム１３ｃとにより作動室１１ｂが画成される。有
気孔１１の底部中央には凸部１１ｃが形成されていて、
該凸部１１ｃの中央部には前記吸入孔１４の吸入口１４
ａが開口しており、弁体１３ｄは吸入口１４ａを開閉す
るようになっている。なお、符号１５ａで示されるのは
、吐出孔１５に連通ずる吐出口である。カバー４、スペ
ーサ２０．及び本体１２はスクリュー２１により一体と
されている。The planning unit 3 includes a main body 12 in which organic holes 11 are formed and a valve member 13 installed in the organic holes 11. The main body 12 has organic holes 11 connected to the outside. A suction hole 14 and a discharge hole 15 with a diameter smaller than the suction hole 14 are bored.
It is connected to 9. As shown in FIG. 2, the valve member 13 is made up of a diaphragm 13c having a corrugated cross section so that the valve member 13 is screwed onto the plunger 7, and a valve body 13b that opens and closes the suction port 14a. It is made by integrally molding tetrafluoroethylene resin. The valve member 13 is inserted into the large diameter portion 11a of the air hole 11 having an inner diameter corresponding to the outer diameter of the predetermined portion 13a, is positioned and fixed by the stepped portion 11b and the spacer 20, and is operated by the air hole 11 and the diaphragm 13c. A chamber 11b is defined. A convex portion 11c is formed at the center of the bottom of the air hole 11,
The suction port 14 of the suction hole 14 is located in the center of the convex portion 11c.
a is open, and the valve body 13d opens and closes the suction port 14a. Note that reference numeral 15a indicates a discharge port that communicates with the discharge hole 15. Cover 4, spacer 20. The main body 12 is integrated with a screw 21.
従って、コイル６に通電することにより、弁体１３ｄは
第１図において−１一方へ移動して吸入［１１４ａを開
［二１し、コイル６への電流を遮断することにより、弁
体１３ｄはド方へ移動して吸入口１４ａを閉塞する。Therefore, by energizing the coil 6, the valve body 13d moves to the -1 side in FIG. and closes the suction port 14a.
なお１本実施例において弁体１３ｄの移動量はストッパ
９により０．２［ｍ層］に設定しており。In this embodiment, the amount of movement of the valve body 13d is set to 0.2 [m layer] by the stopper 9.
さらに、スプリング８に付勢されない状ｙ３においては
、弁体１３ｄはその移動範囲の中間（最下端位置から０
．１ ［鳳ｍｌ 、１一方）に位置するように設定しで
ある。Furthermore, in the state y3 where the spring 8 is not biased, the valve body 13d moves in the middle of its movement range (from the lowest position to 0
．． It is set to be located at 1 [Otori ml, 1 one hand].
以］−の構成における精密計ｊ−８吐出装置１の作用を
説明する。The operation of the precision meter J-8 discharge device 1 in the configuration shown below will be explained.
コイル６に矩形波を印加すると、プランジャ７は矩形波
に応答してｌ二下動し、弁部材１３の弁体１３ｄは吸入
口１４ａを開閉する。吸入工程においては、弁体１３ｄ
はプランジャ７の移動に応じて上方に移動するが、ダイ
ヤフラム１３ｃはその弾力性のためプランジャ７の動き
に一致せず、若干遅れて追従する。従って、弁体１３ｄ
が上方に移動すると、まず吸入口１４ａが開き、少し遅
れてダイヤフラム１３ｃが上方へ移動して吸入行程が始
まる。前述のように、吸入孔１４と吐出孔１５とはその
内径が異なるため、流体抵抗の差によって液体は吸入孔
１４より作動室ｌｉｄ内に流入するが、＋ｆｉｉ ’４
のように１弾力性を有するダイヤフラム１３ｃにより徐
々に無理なく吸入されるため、気泡など生じることなく
前記流体抵抗の差に応じた微量の液体が吸入される。When a rectangular wave is applied to the coil 6, the plunger 7 moves downward by two degrees in response to the rectangular wave, and the valve body 13d of the valve member 13 opens and closes the suction port 14a. In the suction process, the valve body 13d
moves upward in accordance with the movement of the plunger 7, but the diaphragm 13c does not match the movement of the plunger 7 due to its elasticity and follows with a slight delay. Therefore, the valve body 13d
When the suction port 14a moves upward, the suction port 14a first opens, and after a short delay, the diaphragm 13c moves upward and the suction stroke begins. As mentioned above, since the suction hole 14 and the discharge hole 15 have different inner diameters, the liquid flows into the working chamber lid from the suction hole 14 due to the difference in fluid resistance.
Since the diaphragm 13c having an elasticity of 1 is gradually and effortlessly sucked in, a small amount of liquid corresponding to the difference in fluid resistance is sucked in without generating bubbles or the like.
吐出行程においては、まず弁体１３ｄがド動して吸入口
１４ａが閉塞し、その後ダイヤフラム１３ｃがド動する
ため１作動室ｌｉｄ内の微：□ｉ、の液体は吐出孔１５
を介してノズル１９より吐出される。このように作動室
に微量に液体を吸入し、かつ該液体を作動室から吐出１
１に微ｉ、）に吐出するためには、吸入から吐出までの
時間を短くする必要がある。このため電磁石２に印加す
るパルス幅は１〜２量ｓｅｃ程度が望ましい。In the discharge stroke, first the valve body 13d moves to close the suction port 14a, and then the diaphragm 13c moves, so that the liquid of □i in the first working chamber lid flows through the discharge hole 15.
The liquid is discharged from the nozzle 19 through the nozzle 19. In this way, a small amount of liquid is sucked into the working chamber, and the liquid is discharged from the working chamber.
In order to emit the amount of water in a minute amount (1), it is necessary to shorten the time from inhalation to ejection. Therefore, the pulse width applied to the electromagnet 2 is preferably about 1 to 2 seconds.
吐出工程１回当たりの吐出礒は、吸入孔１４及び吐出孔
１５の流体抵抗の差、ダイヤフラム１３ｃの弾力性、及
び弁体１３ ｄ、の移動量等によって定まり、ストッパ
９を１箇することにより弁体１３ｄの移動量を任、ａに
設定することができ、１回ちたりの吐出驕が外部調整で
きる。The discharge force per discharge process is determined by the difference in fluid resistance between the suction hole 14 and the discharge hole 15, the elasticity of the diaphragm 13c, and the amount of movement of the valve body 13d. The amount of movement of the valve body 13d can be set to any value, and the discharge amount per discharge can be adjusted externally.
しかし単位時間ちたりの吐出礒は、コイル６へ印加する
矩形波の周波数を変えることにより変化させることがで
きる。However, the discharge amount per unit time can be changed by changing the frequency of the rectangular wave applied to the coil 6.
発明者の実験によると、弁部材１３を＋ｉｉ述のように
設定した場合、吐出行程１回りたり１〜３［連立１の吐
出、ｒＨＨ，が１１）られた。According to the inventor's experiments, when the valve member 13 is set as described in +ii above, 1 to 3 [discharge of simultaneous 1, rHH, is 11] per discharge stroke.
なお、本実施例においては、弁部材１３を４７フ化エチ
レン樹脂を一体成形したが、他のエラストマを一体成形
しても良く、また、ダイヤフラム１３ｃのみをエラスト
マで作っても良い。In this embodiment, the valve member 13 is integrally molded from 47 fluoride ethylene resin, but other elastomers may be integrally molded, or only the diaphragm 13c may be made of elastomer.
また、吸入孔１４及び吐出孔１５の流体抵抗は必ずしも
変える必要はなく、同一でも良い、すなわち、吸入行程
において吸入孔１４と吐出孔１５とから同量の液体が作
動室ｌｉｄに吸入されても、吐出し程において、吐出が
開始される前に吸入り、Ｉ ｌ ４ ａが閉塞されるた
め、設定された州が必ず吐出されるからである。Further, the fluid resistance of the suction hole 14 and the discharge hole 15 does not necessarily need to be changed, and may be the same, that is, even if the same amount of liquid is sucked into the working chamber lid from the suction hole 14 and the discharge hole 15 during the suction stroke. This is because, in the exhalation process, inhalation occurs before exhalation starts, and I l 4 a is occluded, so that the set state is always expelled.
以上説１ｊ１シたように、本発明によれば駆動手段に応
動して吸入口を開閉する弁体を備え、かつ該弁体移動と
ともに連動して伸縮する弾力性のあるエラストマにより
液体を吸入および吐出するように構成しているので、敬
呈の液体が精度良く計縫、吐出でき、さらに弁が１個で
済むため構成が筒中となり、安価に製作できるなど格別
な高価を有する。As explained above, according to the present invention, a valve body is provided that opens and closes the suction port in response to a driving means, and liquid is sucked and retracted using an elastic elastomer that expands and contracts in conjunction with the movement of the valve body. Since it is configured to be discharged, the liquid can be accurately metered and discharged, and since only one valve is required, the configuration is in a cylinder, and it can be manufactured at a low cost, making it extremely expensive.
第１図は本発明の一実施例の断面図、第２図は第１図に
使用される弁部材の斜視図を示す。
（符号の説１月）
２・・・駆動手段、
３・・・計賃吐出部、
１ｉｃｉ・・・作動室、
１２・・・本体。
１３ｃ・・・ダイヤフラム、
１３ｄ・・・弁体、
１４ａ・・・吸入口、
１５ａ・・・吐出口、FIG. 1 is a sectional view of an embodiment of the present invention, and FIG. 2 is a perspective view of a valve member used in FIG. 1. (Code theory January) 2... Drive means, 3... Meter discharge section, 1ici... Working chamber, 12... Main body. 13c...diaphragm, 13d...valve body, 14a...intake port, 15a...discharge port,
Claims (1)
計量して吐出する計量吐出部とからなる精密計量吐出装
置において、 前記計量吐出部は内部に作動室が形成された本体を有し
、該作動室には液体の吸入口及び吐出口が形成され、該
吸入口は前記駆動手段に応動する弁体により開閉され、
弾力性を有するエラストマからなるダイヤフラムの中央
部が該弁体に、また該ダイヤフラムの該周辺部が前記本
体にそれぞれ固着されており、 該ダイヤフラムは該弁体の移動とともに伸縮し、特に該
弁体が吸入口を閉じた後の該ダイヤフラムの収縮回復力
により作動室内の液体を吐出口から吐出するものである
ことを特徴とする精密計量吐出装置。[Scope of Claims] A precision metering and dispensing device comprising a driving means and a metering and discharging section that accurately measures and discharges liquid drawn in by the driving means, wherein the metering and dispensing section has an operating chamber formed therein. The working chamber has a liquid suction port and a liquid discharge port, and the suction port is opened and closed by a valve body responsive to the driving means,
A central part of a diaphragm made of an elastic elastomer is fixed to the valve body, and a peripheral part of the diaphragm is fixed to the main body, and the diaphragm expands and contracts with the movement of the valve body. A precision metering and dispensing device, characterized in that the liquid in the working chamber is discharged from the discharge port by the contraction recovery force of the diaphragm after the suction port is closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10969786A JPS62267581A (en) | 1986-05-15 | 1986-05-15 | Precise measuring delivery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10969786A JPS62267581A (en) | 1986-05-15 | 1986-05-15 | Precise measuring delivery device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62267581A true JPS62267581A (en) | 1987-11-20 |
Family
ID=14516910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10969786A Pending JPS62267581A (en) | 1986-05-15 | 1986-05-15 | Precise measuring delivery device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62267581A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007059910A1 (en) * | 2005-11-28 | 2007-05-31 | Btg Instruments Gmbh | Device for analysing sample fluids containing suspended materials |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5458208A (en) * | 1977-10-17 | 1979-05-10 | Keihin Seiki Mfg | Fuel pump with automatic interrupting valve |
-
1986
- 1986-05-15 JP JP10969786A patent/JPS62267581A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5458208A (en) * | 1977-10-17 | 1979-05-10 | Keihin Seiki Mfg | Fuel pump with automatic interrupting valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007059910A1 (en) * | 2005-11-28 | 2007-05-31 | Btg Instruments Gmbh | Device for analysing sample fluids containing suspended materials |
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