JPH0523708B2 - - Google Patents
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- Publication number
- JPH0523708B2 JPH0523708B2 JP61173849A JP17384986A JPH0523708B2 JP H0523708 B2 JPH0523708 B2 JP H0523708B2 JP 61173849 A JP61173849 A JP 61173849A JP 17384986 A JP17384986 A JP 17384986A JP H0523708 B2 JPH0523708 B2 JP H0523708B2
- Authority
- JP
- Japan
- Prior art keywords
- container
- measurement
- automatic valve
- measuring
- storage container
- 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
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- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、液体中の沈降性懸濁物質の沈降によ
り生成する沈降界面の位置を測定する装置に関
し、その試料液のサンプリング、界面位置計測、
サンプル排出、容器の洗浄等の操作を容易にし、
またこれらの作業の全自動化をも容易に可能にす
ることのできる装置に関するものである。Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a device for measuring the position of a sedimentation interface generated by settling of sedimentary suspended matter in a liquid, and for sampling a sample liquid and measuring the interface position. ,
Facilitates operations such as sample discharge and container cleaning,
The present invention also relates to a device that can easily fully automate these operations.
液体中の懸濁物質の沈降性状の測定は、各種固
液分離装置の設計、維持管理に必要不可欠のもの
であり、沈降界面の時間変化によつて求められ
る。
Measuring the sedimentation properties of suspended solids in liquids is essential for the design and maintenance of various solid-liquid separation devices, and is determined by the temporal changes in the sedimentation interface.
従来、懸濁物質の沈降性状を測定するには、所
定の測定容器に充填した一定量の懸濁液を重力場
あるいは遠心場に放置した後、所定時間毎に肉眼
観察を行つて界面位置を計測し、その時間微分か
ら沈降速度を計算していた。また、垂直に設置し
た沈降管側面を光透過性とし、所定時間毎に光学
センサを移動させて透過光量の変化する位置を検
出し、沈降速度を求める自動計測器も市販されて
いる。 Conventionally, in order to measure the sedimentation properties of suspended solids, a certain amount of suspension filled in a specified measurement container is left in a gravitational field or a centrifugal field, and then visually observed at specified intervals to determine the interface position. The sedimentation rate was calculated from the time derivative. There are also commercially available automatic measuring devices that measure the sedimentation speed by making the side surface of the vertically installed sedimentation tube transparent and moving an optical sensor at predetermined time intervals to detect the position where the amount of transmitted light changes.
しかしながら、従来の前記肉眼観察による方法
では手間がかかり、前記市販の光学的自動計測器
を使用しても、付随するサンプリング、サンプル
排出、測定容器の洗浄等の各操作に時間がかかる
ものであつた。
However, the conventional method using the naked eye observation is time-consuming, and even when the commercially available automatic optical measuring instrument is used, the accompanying operations such as sampling, sample discharge, and cleaning of the measurement container are time-consuming. Ta.
本発明は、液体中の沈降性懸濁物質の沈降界面
測定装置において、サンプリング、界面位置の計
測、サンプル排出、洗浄の各操作を短時間で容易
に行うことができ、各操作の全自動化をも容易に
しよとするものである。 The present invention is an apparatus for measuring sedimentation interfaces for sedimentary suspended solids in liquids, which allows each operation of sampling, measurement of the interface position, sample discharge, and cleaning to be performed easily in a short time, and fully automates each operation. It also aims to make it easier.
本発明は、沈降性懸濁物質を含む混合液体の沈
降界面を計測する光学的界面位置計測器を備え下
部に前記混合液体の液槽中の液面下に延長した吸
い上げ管を連設し上部に洗浄水注入口および溢流
部を設けた測定容器と、液面計を備え上部が前記
測定容器の溢流部に連通し下部に排水管を連設し
た貯留容器とを並置し、さらにこれらの測定容器
と貯留容器の内部を減圧する手段を設けたことを
特徴とする沈降界面測定装置である。
The present invention is provided with an optical interface position measuring device for measuring the settling interface of a mixed liquid containing sedimentary suspended matter, a suction pipe extending below the liquid level in a tank of the mixed liquid at the lower part, and an upper part. A measurement container equipped with a wash water inlet and an overflow part is juxtaposed with a storage container equipped with a liquid level gauge, the upper part of which communicates with the overflow part of the measurement container, and the lower part of which is connected with a drain pipe. This is a sedimentation interface measuring device characterized by being provided with means for reducing the pressure inside the measurement container and the storage container.
本発明の一実施例を図面を参照しながら説明す
れば、光が透過できるような透明材質からなる測
定容器１の側壁もしくはその近傍には光学的界面
位置計測器が備えられ、また測定容器１の下部に
は自動弁２を介して測定すべき懸濁液の液槽中の
液面下に延長されて懸濁液を吸い上げるための吸
い上げ管３が連設されている。
An embodiment of the present invention will be described with reference to the drawings. A measuring container 1 made of a transparent material that allows light to pass therethrough is provided with an optical interface position measuring device on or near the side wall thereof. A suction pipe 3 is connected to the lower part of the apparatus via an automatic valve 2 and extends below the surface of the suspension to be measured in the liquid tank for sucking up the suspension.
前記光学的界面位置計測器としては、所定時間
毎に光学センサを移動させて透過光量の変化する
位置を検出して沈降速度を求める市販されている
従来品を使用することができるが、特開昭61−
262632号公報で提案されているような、移動機構
を持つことなく、測定容器１の壁もしくはその近
傍に固定配置した光源４と、該光源４から平行光
レンズ５を経て測定容器１を透過して入射する光
量の変化位置を検出しうる多くの光反応素子で形
成された半導体光検出素子６とからなるものは、
計測精度よく、構造簡単で、小型化、軽量化され
るから好ましい。 As the optical interface position measuring device, a conventional commercially available device that moves an optical sensor at predetermined time intervals to detect the position where the amount of transmitted light changes and determines the sedimentation velocity can be used. 1986-
As proposed in Japanese Patent No. 262632, the light source 4 is fixedly arranged on or near the wall of the measuring container 1 without having a moving mechanism, and the light source 4 passes through the measuring container 1 through the parallel light lens 5. A semiconductor photodetector element 6 formed of many photoreactive elements capable of detecting the position of change in the amount of incident light is
It is preferable because it has good measurement accuracy, simple structure, and is compact and lightweight.
また、測定容器１の上部には洗浄水注入口７が
設けられて自動弁８を有する洗浄水配管９が連結
されると共に、測定容器１の上部は溢流管１０に
て並置された貯留容器１１上部と連通され、測定
容器１からあふれ出る液体が溢流管１０を経て貯
留容器１１に受容されるようになつており、貯留
容器１１の下部は自動弁１２を介して排水管１３
が連結されている。 A cleaning water inlet 7 is provided at the top of the measurement container 1 to which a cleaning water pipe 9 having an automatic valve 8 is connected. 11, the liquid overflowing from the measuring container 1 is received in the storage container 11 via the overflow pipe 10, and the lower part of the storage container 11 is connected to the drain pipe 13 via the automatic valve 12.
are connected.
さらに、貯留容器１１には液面計１４が配備さ
れ、貯留容器１１内の水位L1で作動するスイツ
チが付属されており、貯留容器１１内上端の空間
部１１−ａには真空ポンプ１５に真空配管１６を
介して接続される真空口１７が設けられ、真空ポ
ンプ１５と真空口１７間は分岐されて自動弁１８
を介して大気に通じている。なお本実施例では真
空ポンプ１５を貯留容器１１と連結した例を示し
たが、真空ポンプ１５を測定容器１側へ連結する
こともできる。 Furthermore, the storage container 11 is equipped with a liquid level gauge 14 and a switch that operates when the water level L 1 in the storage container 11 is reached. A vacuum port 17 is provided which is connected via a vacuum pipe 16, and an automatic valve 18 is provided which is branched between the vacuum pump 15 and the vacuum port 17.
It communicates with the atmosphere through. Although this embodiment shows an example in which the vacuum pump 15 is connected to the storage container 11, the vacuum pump 15 can also be connected to the measurement container 1 side.
図中、１９は液槽内の測定されるべき懸濁液を
示す。 In the figure, 19 indicates the suspension to be measured in the liquid tank.
しかして、測定される液槽内の懸濁液１９の吸
い上げ管３からサンプリングするが、サンプリン
グの前に洗浄水配管９の自動弁８、貯留容器１１
下部の自動弁１２、大気に通じる自動弁１８を閉
じ、測定容器１下部の自動弁２を開く。 Therefore, the suspension 19 in the liquid tank to be measured is sampled from the suction pipe 3, but before sampling, the automatic valve 8 of the cleaning water pipe 9, the storage container 11
The automatic valve 12 at the bottom and the automatic valve 18 communicating with the atmosphere are closed, and the automatic valve 2 at the bottom of the measurement container 1 is opened.
次いで、真空ポンプ１５を運転することによ
り、測定容器１内の圧力が低下し、懸濁液１９は
吸い上げ管３から吸い上げられ、測定容器１内に
入つて上行する。時間の経過と共に測定容器１内
の液面は上昇し、過剰分は測定容器１から溢れ出
て溢流管１０を経て貯留容器１１内に溜つてゆ
く。かくて、貯留容器１１内の液面は徐々に上昇
し、水位L1のレベルに達すると液面計１４が働
き、自動弁２が閉じて懸濁液１９の吸い上げを遮
断し、真空ポンプ１５は停止し、同時に自動弁１
８が開いて測定容器１及び貯留容器１１内を大気
圧にする。ここで、測定容器１内で溢流管１０ま
で充満した液体内部では懸濁物質の沈降が開始す
るので、そのまま数分間（約５分以内）静置した
後、光源４、平行光レンズ５、半導体光検出素子
６等で構成された光学的界面位置計測器により沈
降界面を計測する。 Next, by operating the vacuum pump 15, the pressure inside the measurement container 1 is reduced, and the suspension 19 is sucked up from the suction tube 3, enters the measurement container 1, and ascends. As time passes, the liquid level in the measuring container 1 rises, and the excess overflows from the measuring container 1, passes through the overflow pipe 10, and accumulates in the storage container 11. Thus, the liquid level in the storage container 11 gradually rises, and when it reaches the level L1 , the liquid level gauge 14 operates, the automatic valve 2 closes to cut off the suction of the suspension 19, and the vacuum pump 15 stops, and at the same time automatic valve 1
8 is opened to bring the inside of the measurement container 1 and the storage container 11 to atmospheric pressure. At this point, the suspended solids start to settle inside the liquid that has filled up to the overflow tube 10 in the measuring container 1, so after leaving it for several minutes (within about 5 minutes), the light source 4, parallel light lens 5, The settling interface is measured by an optical interface position measuring device composed of a semiconductor photodetector element 6 and the like.
このようにして沈降界面測定を終了した後は、
タイマー設定などによつて測定容器１下部の自動
弁２及び貯留容器１１下部の自動弁１２を開いて
各容器内の液体を排出し、排出終了時点（タイマ
ー設定）で容器の内面が乾かないうちに、自動弁
２を閉じると同時に洗浄水配管９の自動弁８を開
き、洗浄水注入口７から洗浄水を注入し、測定容
器１内を洗浄し、洗浄水が測定容器１内に充満す
ると溢流管１０からあふれ出て貯留容器１１に至
り、自動弁１２を経て排水管１３から排水され
る。かくて一定時間（タイマー設定）後、自動弁
８を閉じて洗浄水の注入を停止し洗浄を終了す
る。次に、自動弁２を開いて（自動弁１２は開い
たままになつている）測定容器１内に残つている
洗浄水を排出し、排出終了時点で貯留容器１１下
部の自動弁１２及び大気に通ずる自動弁１８を閉
じ次のサンプリングに備える。 After completing the sedimentation interface measurement in this way,
The automatic valve 2 at the bottom of the measuring container 1 and the automatic valve 12 at the bottom of the storage container 11 are opened according to a timer setting, etc., to drain the liquid in each container, and at the time of completion of draining (timer setting), before the inner surface of the container is dry. At the same time as closing the automatic valve 2, the automatic valve 8 of the cleaning water pipe 9 is opened, and cleaning water is injected from the cleaning water inlet 7 to clean the inside of the measuring container 1. When the cleaning water fills the measuring container 1, The water overflows from the overflow pipe 10, reaches the storage container 11, passes through the automatic valve 12, and is drained from the drain pipe 13. After a certain period of time (timer setting), the automatic valve 8 is closed to stop the injection of cleaning water and complete the cleaning. Next, the automatic valve 2 is opened (the automatic valve 12 remains open) to discharge the cleaning water remaining in the measurement container 1, and when the discharge is finished, the automatic valve 12 at the bottom of the storage container 11 is opened and the The automatic valve 18 leading to the sample is closed to prepare for the next sampling.
このような、懸濁液の一定量のサンプリング、
沈降界面位置の計測、サンプル排出、洗浄の各操
作は、極めて短時間で自動的に行われ、測定時間
は大幅に短縮される。また次回のサンプリング時
には、吸い上げ管３の中に残つている液体は最初
に吸い上げられて測定容器１内を上行し、溢流管
１０を経て貯留容器１１内に流れ出るから、測定
容器１内では液槽内の懸濁液の真の沈降界面位置
を測定することができる。 Sampling of a certain amount of suspension, such as
Measurement of the sedimentation interface position, sample discharge, and washing operations are automatically performed in an extremely short period of time, significantly reducing measurement time. In addition, at the time of the next sampling, the liquid remaining in the suction tube 3 is first sucked up and flows up inside the measurement container 1, and then flows out into the storage container 11 through the overflow tube 10. The true settling interface position of the suspension in the tank can be measured.
以上述べたように本発明によれば、測定すべき
懸濁物質を含む混合液の一定量を測定容器内に容
易にサンプリングすることができるばかりでな
く、次のような有益なる効果を有するものであ
る。
As described above, according to the present invention, it is possible not only to easily sample a certain amount of a mixed liquid containing suspended solids to be measured into a measuring container, but also to have the following beneficial effects. It is.
前回の測定時に吸い上げ管内に残つている液
体を測定前に貯留容器に流し出すことが可能に
なり、懸濁物質を含む混合液の真の体積濃度を
正確に測定することができる。 It becomes possible to drain the liquid remaining in the suction tube from the previous measurement into the storage container before measurement, making it possible to accurately measure the true volume concentration of the mixed liquid containing suspended solids.
測定容器の洗浄が確実となり、正確な測定を
可能にし、測定容器の取り換えや人手による定
期洗浄などの時間間隔を長くすることができ
る。 The measurement container can be reliably cleaned, enabling accurate measurement, and the time interval between replacement of the measurement container and periodic manual cleaning can be lengthened.
測定を短時間で容易に行うことができ、測定
間隔が大幅に短縮される。 Measurements can be easily performed in a short time, and the measurement interval is significantly shortened.
この計測結果を液体貯留槽の制御に利用する
ことによつて応答の早い制御が可能になる。 By using this measurement result to control the liquid storage tank, quick response control becomes possible.
図面は本発明の一実施例を示す構成説明図であ
る。
１……測定容器、２……自動弁、３……吸い上
げ管、４……光源、５……平行光レンズ、６……
半導体光検出素子、７……洗浄水注入口、８……
自動弁、９……洗浄水配管、１０……溢流管、１
１……貯留容器、１１−ａ……空間部、１２……
自動弁、１３……排水管、１４……液面計、１５
……真空ポンプ、１６……真空配管、１７……真
空口、１８……自動弁、１９……懸濁液、L1…
…水位。
The drawings are configuration explanatory diagrams showing one embodiment of the present invention. 1...Measurement container, 2...Automatic valve, 3...Suction tube, 4...Light source, 5...Parallel light lens, 6...
Semiconductor photodetector element, 7...Washing water inlet, 8...
Automatic valve, 9...Washing water piping, 10...Overflow pipe, 1
1...Storage container, 11-a...Space, 12...
Automatic valve, 13...Drain pipe, 14...Liquid level gauge, 15
... Vacuum pump, 16 ... Vacuum piping, 17 ... Vacuum port, 18 ... Automatic valve, 19 ... Suspension, L 1 ...
...water level.
Claims (1)
計測する光学的界面位置計測器を備え下部に前記
混合液体の液槽中の液面下に延長した吸い上げ管
を連設し上部に洗浄水注入口および溢流部を設け
た測定容器と、液面計を備え上部が前記測定容器
の溢流部に連通し下部に排水管を連設した貯留容
器とを並置し、さらにこれらの測定容器と貯留容
器の内部を減圧する手段を設けたことを特徴とす
る沈降界面測定装置。1.Equipped with an optical interface position measuring device for measuring the settling interface of a mixed liquid containing sedimentary suspended matter, a suction pipe extending below the liquid level in a tank of the mixed liquid is connected to the lower part, and a washing water is connected to the upper part. A measurement container provided with an inlet and an overflow part, and a storage container equipped with a liquid level gauge, the upper part of which communicates with the overflow part of the measurement container, and the lower part of which is connected to a drain pipe, are placed side by side, and these measurement containers are A sedimentation interface measuring device characterized in that a means for reducing the pressure inside the storage container is provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17384986A JPS6330742A (en) | 1986-07-25 | 1986-07-25 | Apparatus for measuring sedimentation interface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17384986A JPS6330742A (en) | 1986-07-25 | 1986-07-25 | Apparatus for measuring sedimentation interface |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6330742A JPS6330742A (en) | 1988-02-09 |
| JPH0523708B2 true JPH0523708B2 (en) | 1993-04-05 |
Family
ID=15968294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17384986A Granted JPS6330742A (en) | 1986-07-25 | 1986-07-25 | Apparatus for measuring sedimentation interface |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6330742A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE59309797D1 (en) * | 1992-12-19 | 1999-10-28 | Roche Diagnostics Gmbh | Device for the detection of a liquid phase boundary in a translucent measuring tube |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5214074A (en) * | 1975-06-24 | 1977-02-02 | Agency Of Ind Science & Technol | Method and device to automatically measure the indicator of amount of activated sludge |
| JPS541689A (en) * | 1977-06-06 | 1979-01-08 | Okui Denki Kk | Automatic sedimentation measuring instrument |
-
1986
- 1986-07-25 JP JP17384986A patent/JPS6330742A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6330742A (en) | 1988-02-09 |
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