JPH0713761Y2 - Automatic sample concentrator - Google Patents
Automatic sample concentratorInfo
- Publication number
- JPH0713761Y2 JPH0713761Y2 JP10132188U JP10132188U JPH0713761Y2 JP H0713761 Y2 JPH0713761 Y2 JP H0713761Y2 JP 10132188 U JP10132188 U JP 10132188U JP 10132188 U JP10132188 U JP 10132188U JP H0713761 Y2 JPH0713761 Y2 JP H0713761Y2
- Authority
- JP
- Japan
- Prior art keywords
- nozzle
- sample
- purge gas
- automatic sample
- automatic
- 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.)
- Expired - Lifetime
Links
Landscapes
- Sampling And Sample Adjustment (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Description
この考案は、試料自動濃縮装置に関する。さらに詳しく
は、化学分析等における試料自動調整装置の試料自動濃
縮装置に関する。This invention relates to an automatic sample concentrating device. More specifically, it relates to an automatic sample concentrating device of an automatic sample adjusting device in chemical analysis and the like.
試験管等の容器中にある溶液を濃縮する場合、通常は試
験管を周囲より加熱して試料溶液を蒸発させ、さらに試
料溶液上面にN2ガス等のパージガスをあてることによ
り、試料液の濃縮効率を上げるという方法がとられてい
る。この方法による従来の濃縮装置の一般的な構成を第
２図にあらわす。ヒータ、温度センサ等を備えたドライ
バス５によって所定温度に保たれたアルミブロック４中
に試験管３がセットされ、試料容液が一定温度で加熱さ
れる。２は、パージガスを試料液面に吹きつけるための
ノズルであり、パージガスライン17によりN2ガス等が供
給される。ノズル２は、ノズルホルダ６に取り付けられ
ており、ノズル用ガイドシャフト１に沿ってノズル２の
先端が試料液面に近づく様、高さが調節される。When concentrating a solution in a container such as a test tube, usually the test tube is heated from the surroundings to evaporate the sample solution, and a purge gas such as N 2 gas is applied to the upper surface of the sample solution to concentrate the sample solution. The method is to increase efficiency. A general configuration of a conventional concentrating device according to this method is shown in FIG. The test tube 3 is set in the aluminum block 4 kept at a predetermined temperature by the dry bath 5 having a heater, a temperature sensor, etc., and the sample solution is heated at a constant temperature. Reference numeral 2 denotes a nozzle for blowing a purge gas onto the sample liquid surface, and N 2 gas or the like is supplied by the purge gas line 17. The nozzle 2 is attached to the nozzle holder 6, and its height is adjusted so that the tip of the nozzle 2 approaches the sample liquid surface along the nozzle guide shaft 1.
ところが、従来装置では、試料が蒸発し、液面が下がれ
ば、ノズル２の先端と試料液面との距離が大きくなり、
パージガスによる有効な濃縮効率が得られなかった。こ
れを避けるため、人手によってノズルの先端を試料液面
に近づく様に下げるということも可能であるが、これが
甚だ面倒であることは言うまでもない。 この考案は、かかる問題点に鑑みてなされたものであ
り、その目的とするところは、試料が濃縮されている途
中においても濃縮効率が下がらない様な試料自動濃縮装
置を提供することにある。However, in the conventional apparatus, if the sample evaporates and the liquid level drops, the distance between the tip of the nozzle 2 and the sample liquid level increases,
No effective concentration efficiency was obtained with the purge gas. In order to avoid this, it is possible to manually lower the tip of the nozzle so as to approach the sample liquid surface, but it goes without saying that this is extremely troublesome. The present invention has been made in view of such a problem, and an object thereof is to provide an automatic sample concentrating device in which the concentration efficiency does not decrease even while the sample is being concentrated.
上記の目的を達成するために、この考案の提供する試料
自動濃縮装置では、パージガスの背圧を検出しノズル−
試料液面間の距離をモニターする手段を備えると共に、
このモニター手段からの信号によりパージガス供給ノズ
ルを自動的に昇降制御することができる機構を設けるこ
とにより、試料液面の下降にノズルが自動的に追随する
ことを可能にした。In order to achieve the above object, the automatic sample concentrator provided by the present invention detects the back pressure of the purge gas and detects the nozzle-
A means for monitoring the distance between the sample liquid surfaces is provided, and
By providing a mechanism capable of automatically raising and lowering the purge gas supply nozzle in response to a signal from this monitor means, the nozzle can automatically follow the lowering of the sample liquid level.
以下、この考案の実施例について図面を参照しながら説
明する。 第１図において、この考案が提供する試料自動濃縮装置
では、ノズル２の上方に３方ジョイント７を設け、一方
には圧力センサ８を、他方には電磁弁15を介してパージ
ガスライン17を取り付ける。圧力センサ８により、ノズ
ル２中のパージガスの背圧を検出することによって、ノ
ズル先端と試料液面との距離を常にモニターし、これが
有効な濃縮効率を得られる距離に維持する様に、モータ
11によってノズル２の高さを制御する。 また、フォトマイクロスイッチ13は、ノズル２の先端の
高さが濃縮終了時の試料溶液量になるような高さに予め
設定される。濃縮を行い、試料溶液が目的とする量まで
濃縮された時、ノズルホルダ６に取り付けられたスリッ
ト14がフォトマイクロスイッチ13の光軸を遮断し、制御
部16により濃縮作業が終了されると同時に、電磁弁15に
よりパージガスの供給が停止される。An embodiment of the present invention will be described below with reference to the drawings. Referring to FIG. 1, in the automatic sample concentrator provided by the present invention, a three-way joint 7 is provided above the nozzle 2, a pressure sensor 8 is attached to one side, and a purge gas line 17 is attached to the other side via a solenoid valve 15. . By detecting the back pressure of the purge gas in the nozzle 2 by the pressure sensor 8, the distance between the tip of the nozzle and the sample liquid surface is constantly monitored, and the motor is adjusted so that the effective concentration efficiency is maintained.
The height of the nozzle 2 is controlled by 11. Further, the photomicro switch 13 is preset to a height such that the height of the tip of the nozzle 2 becomes the amount of the sample solution at the end of the concentration. When the sample solution is concentrated to a desired amount, the slit 14 attached to the nozzle holder 6 blocks the optical axis of the photomicro switch 13, and the control unit 16 completes the concentration operation at the same time. The supply of the purge gas is stopped by the solenoid valve 15.
【考案の効果】 この考案にかかる試料自動濃縮装置は、以上の様な構成
としたので、以下に記載される様な効果を奏する。 従来の装置では、試料溶液の濃縮が進むにつれて濃縮効
率が低下してしまっていたが、この考案によれば、常に
高い濃縮効率を得ることが可能である。また、濃縮操作
に全く人手を介さないので、複数の試料を同一条件のも
とに濃縮調整することができ、分析の精度をも向上させ
ることができる。さらには、こうした濃縮操作が全自動
で行え、且つ、濃縮終了と同時にパージガスラインをも
自動閉鎖されるので、他の自動分析装置に連携すること
ができ、操作的、時間的、また、経済的にも大きな利点
を生む。EFFECTS OF THE INVENTION Since the automatic sample concentrating apparatus according to the present invention has the above-mentioned configuration, it has the following effects. In the conventional device, the concentration efficiency decreased as the concentration of the sample solution progressed, but according to this invention, it is possible to always obtain a high concentration efficiency. In addition, since the concentration operation does not require any human intervention, the concentration of a plurality of samples can be adjusted under the same conditions, and the accuracy of analysis can be improved. Furthermore, since such concentration operation can be performed fully automatically and the purge gas line is automatically closed at the same time as the concentration is completed, it can be linked to other automatic analyzers, which is operative, time-consuming, and economical. Also produces great advantages.
第１図は、本考案による試料自動濃縮装置の構成をあら
わした図、第２図は、従来の試料自動濃縮装置の構成を
あらわした図である。 （１）…ノズル用ガイドシャフト （２）…ノズル （３）…試験管 （４）…アルミブロック （５）…ホットドライバス （６）…ノズルホルダ （７）…３方ジョイント （８）…圧力センサ （９）…スライドベアリング （10）…送りネジ （11）…モータ （12）…フォトマイクロスイッチ用ガイドシャフト （13）…フォトマイクロスイッチ （14）…スリット （15）…電磁弁 （16）…制御部 （17）…パージガスラインFIG. 1 is a diagram showing a configuration of an automatic sample concentrating device according to the present invention, and FIG. 2 is a diagram showing a configuration of a conventional sample automatic concentrating device. (1) ... Nozzle guide shaft (2) ... Nozzle (3) ... Test tube (4) ... Aluminum block (5) ... Hot dry bath (6) ... Nozzle holder (7) ... Three-way joint (8) ... Pressure Sensor (9)… Slide bearing (10)… Feed screw (11)… Motor (12)… Guide shaft for photo micro switch (13)… Photo micro switch (14)… Slit (15)… Solenoid valve (16)… Controller (17) ... Purge gas line
Claims (1)
段と、試料容器中にパージガスを供給するためのノズル
と、パージガスの背圧を検出する圧力センサと、この圧
力センサからの信号によりノズルを自動的に昇降制御す
る機構とを備えてなる試料自動濃縮装置。1. A heating means for keeping a sample container at a predetermined temperature, a nozzle for supplying a purge gas into the sample container, a pressure sensor for detecting a back pressure of the purge gas, and a signal from the pressure sensor. An automatic sample concentrating device comprising a mechanism for automatically raising and lowering a nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10132188U JPH0713761Y2 (en) | 1988-07-30 | 1988-07-30 | Automatic sample concentrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10132188U JPH0713761Y2 (en) | 1988-07-30 | 1988-07-30 | Automatic sample concentrator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0225001U JPH0225001U (en) | 1990-02-19 |
| JPH0713761Y2 true JPH0713761Y2 (en) | 1995-04-05 |
Family
ID=31330206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10132188U Expired - Lifetime JPH0713761Y2 (en) | 1988-07-30 | 1988-07-30 | Automatic sample concentrator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0713761Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4737865B2 (en) * | 2001-05-01 | 2011-08-03 | ユースエンジニアリング株式会社 | Solution concentrator |
| CN106442092B (en) * | 2016-11-03 | 2023-03-07 | 睿科集团(厦门)股份有限公司 | Drawer device capable of automatically inserting nitrogen blowing needle into concentrated test tube |
-
1988
- 1988-07-30 JP JP10132188U patent/JPH0713761Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0225001U (en) | 1990-02-19 |
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