JPS6332385Y2 - - Google Patents
Info
- Publication number
- JPS6332385Y2 JPS6332385Y2 JP1981148362U JP14836281U JPS6332385Y2 JP S6332385 Y2 JPS6332385 Y2 JP S6332385Y2 JP 1981148362 U JP1981148362 U JP 1981148362U JP 14836281 U JP14836281 U JP 14836281U JP S6332385 Y2 JPS6332385 Y2 JP S6332385Y2
- Authority
- JP
- Japan
- Prior art keywords
- amount
- pump
- flow rate
- arithmetic processing
- liquid
- 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
Links
- 239000007788 liquid Substances 0.000 claims description 22
- 238000011088 calibration curve Methods 0.000 claims description 16
- 238000005259 measurement Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Flow Control (AREA)
Description
【考案の詳細な説明】
本考案は定流量ポンプに関し、更に詳述すれば
簡易に流量の校正を行ない得ると共に、流量の変
更等も簡単にできる定流量ポンプに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a constant flow pump, and more specifically to a constant flow pump that can easily calibrate the flow rate and easily change the flow rate.
従来、所定流量で送液するプランジヤポンプは
ある。しかし、その送液量は温度、粘度、シール
部材の摩耗による漏れ、負荷圧力の変動等により
変化し、一定のものではない。流量の変動に対し
ては、従来はポンプの吐出量を実測し、これから
目標値との偏差を求め、ポンプに設けられた流量
調節用螺子等を適当に調節することを繰返して行
なつていた。しかし、上記方法による場合には、
流量の調節は勘に頼る部分が多くなり、時間がか
かるのが一般である。また、予め流量の実測値と
目盛の関係(検量線)を作成しておいて、この検
量線を用いてポンプの流量を定めることも行なわ
れている。しかし、この方法による場合には、上
述したように、送液する流体、温度、粘度その他
が変わる毎に検量線も変化し、従つてその都度、
検量線を作り直すことが必要となり、やはり繁雑
なものである。 Conventionally, there are plunger pumps that pump liquid at a predetermined flow rate. However, the amount of liquid fed varies depending on temperature, viscosity, leakage due to wear of the sealing member, fluctuations in load pressure, etc., and is not constant. In the past, to deal with fluctuations in flow rate, the method was to measure the pump's discharge volume, calculate the deviation from the target value, and repeatedly adjust the flow adjustment screws etc. installed on the pump. . However, in the case of the above method,
Adjusting the flow rate requires a lot of intuition and is generally time consuming. Furthermore, a relationship (calibration curve) between the measured value of the flow rate and the scale is created in advance, and the flow rate of the pump is determined using this calibration curve. However, when using this method, as mentioned above, the calibration curve changes every time the fluid to be delivered, temperature, viscosity, etc. change, and therefore, each time,
It is necessary to recreate the calibration curve, which is still complicated.
本考案は上記事情を改善するためになされたも
ので、マイクロコンピユータとポンプを連結する
ことにより、正確かつ簡易に所望の流量で作動さ
せ得るポンプを提供することを目的とする。 The present invention was made to improve the above-mentioned situation, and an object of the present invention is to provide a pump that can be operated accurately and easily at a desired flow rate by connecting a microcomputer and the pump.
以下、本考案の一実施例につき図面を参照して
説明する。 Hereinafter, one embodiment of the present invention will be described with reference to the drawings.
第1図は本考案のポンプの構成を示すブロツク
線図で、図中1はキーボード等の入力装置であ
る。この入力装置からデータ、プログラム等が入
力され、また後述するポンプ3に対する各種操作
が行なわれる。入力データ等はインターフエース
部及びメモリ領域を内蔵した演算処理装置2に送
られ、ここで所定の演算処理等が行なわれるが、
入力装置1及び演算処理装置2の代りにこれらが
一体となつたいわゆるワンボードマイクロコンピ
ユータを入力演算処理装置として使用することも
できる。演算処理装置で演算され、これによる電
気的制御量が定流量ポンプ3に送られる。 FIG. 1 is a block diagram showing the configuration of the pump of the present invention, in which numeral 1 represents an input device such as a keyboard. Data, programs, etc. are input from this input device, and various operations on the pump 3, which will be described later, are performed. Input data, etc. are sent to an arithmetic processing unit 2 that includes an interface section and a memory area, and predetermined arithmetic processing is performed here.
Instead of the input device 1 and the arithmetic processing device 2, a so-called one-board microcomputer in which these are integrated can also be used as the input arithmetic processing device. The arithmetic processing unit calculates the electrically controlled amount, and the electrically controlled amount is sent to the constant flow pump 3.
このポンプ3は電気的制御量を受けて流量が制
御される定流量ポンプで、このポンプ3は、例え
ばパルス信号を受けてそのパルス数に比例して作
動するパルスモータ等を駆動源としたプランジヤ
ポンプが本考案に好適に使用できる。 This pump 3 is a constant flow pump whose flow rate is controlled in response to an electrically controlled amount, and this pump 3 is a plunger whose drive source is, for example, a pulse motor that receives a pulse signal and operates in proportion to the number of pulses. A pump can be suitably used in the present invention.
次に、ポンプにパルスモータを駆動源としたプ
ランジヤポンプを用いた場合を例にとり、所定液
量で送液する場合につき説明する。 Next, a case will be described in which a predetermined amount of liquid is delivered using a plunger pump using a pulse motor as a driving source.
まず、送液に先立ち予め流量の校正を行なう。
入力装置1から演算処理装置2に指示を与えて所
定数(第2図においてはn1)のパルスをポンプ3
に送る。すると、ポンプ3はパルス数(n1)に応
じた吐出量(第2図においてはv1)で送液するか
ら、この吐出量を実測する。次いで、入力装置1
から演算処理装置2に指示を与えて、前記所定数
と異なる数(n3)のパルスをポンプ3に送らせ
る。すると、ポンプは同様にパルス数に応じた吐
出量v3を送液する。この吐出量v3を測定し、この
ようにして得られた2以上のパルス数と吐出量と
の関係を入力装置1に入力し、演算処理装置2で
入力した関係から検量線を作成し、これをメモリ
ーに記憶する。 First, prior to liquid feeding, the flow rate is calibrated in advance.
An instruction is given from the input device 1 to the arithmetic processing device 2 to pump a predetermined number of pulses (n 1 in FIG. 2) to the pump 3.
send to Then, since the pump 3 pumps liquid at a discharge amount (v 1 in FIG. 2) corresponding to the number of pulses (n 1 ), this discharge amount is actually measured. Next, input device 1
gives an instruction to the arithmetic processing unit 2 to cause the pump 3 to send a number (n 3 ) of pulses different from the predetermined number. Then, the pump similarly delivers a discharge amount v 3 corresponding to the number of pulses. This discharge amount v 3 is measured, and the relationship between the number of pulses of 2 or more obtained in this manner and the discharge amount is inputted to the input device 1, and a calibration curve is created from the relationship inputted by the arithmetic processing device 2. Store this in memory.
次に、送液する場合につき述べると、上記操作
により検量線をメモリーに記憶させた後、所望の
送液量v2を入力装置1から入力すると、演算処理
装置2は予め求めて記憶してある検量線を用い
て、前記入力された送液量v2に対応するパルス数
n2を算出し、このパルス数n2の数のパルスをポン
プ3に送出する。このパルスを受けて、ポンプ3
は所望の送液量v2を吐出するものである。また、
上記例においては所定量の液体を吐出する場合に
つき述べたが、単位時間当りのパルス数と流量と
の関係を示す検量線を作成して記憶しておけば、
任意の流量を同様に簡単に得ることができるもの
である。 Next, regarding the case of liquid feeding, after storing the calibration curve in the memory by the above operation, when the desired liquid feeding amount v 2 is inputted from the input device 1, the arithmetic processing device 2 calculates and stores the amount v2 in advance. Using a certain calibration curve, calculate the number of pulses corresponding to the input liquid delivery amount v 2
n 2 is calculated, and pulses equal to this pulse number n 2 are sent to the pump 3. In response to this pulse, pump 3
is for discharging the desired amount of liquid v 2 . Also,
In the above example, we have described the case of discharging a predetermined amount of liquid, but if you create and memorize a calibration curve that shows the relationship between the number of pulses per unit time and the flow rate,
Any flow rate can be obtained easily as well.
本実施例においては、予め所定パルス数に対応
する吐出量を実測で求め、検量線を作成してメモ
リ内に記憶させているため、所望の吐出量を入力
すると、直ちに吐出量がパルス数に換算されてポ
ンプに送られ、これにより入力した吐出量が直ち
にポンプから吐出され、操作が簡単である。そし
て、実測により校正された検量線を用いているの
で、吐出量は正確なものである。更に、本実施例
においては、ポンプの駆動源にパルスで作動する
パルスモータを使用しているので、送液量が極め
て正確で繰返し精度も高い上、制御も簡単で、全
体の構成も比較的簡単なものになる。また、この
構成によるポンプは常にデイジタルで設定した値
が正確に吐出される特長がある。 In this example, the ejection amount corresponding to a predetermined number of pulses is actually measured, a calibration curve is created, and it is stored in the memory, so when the desired ejection amount is input, the ejection amount immediately changes to the number of pulses. It is converted and sent to the pump, so that the input discharge amount is immediately discharged from the pump, and the operation is simple. Since a calibration curve calibrated through actual measurements is used, the discharge amount is accurate. Furthermore, in this example, a pulse motor that operates with pulses is used as the drive source of the pump, so the amount of liquid fed is extremely accurate and repeatable, the control is simple, and the overall configuration is relatively simple. It becomes something easy. In addition, the pump with this configuration has the feature that the digitally set value is always accurately discharged.
なお、本実施例においては1箇の検量線しかメ
モリーに記憶していないが、各種の条件の異なる
状態で作成した検量線を多数記憶しておき、これ
らを適宜選択して使用することもでき、更にタイ
マー等を用意しておいて所定時間毎に自動的に検
量線の校正を行なうようにしても良く、その他本
考案の要旨を逸脱しない範囲で種々変形して差支
えない。 In this example, only one calibration curve is stored in the memory, but it is also possible to store a large number of calibration curves created under various conditions and select and use them as appropriate. Further, a timer or the like may be provided to automatically calibrate the calibration curve at predetermined intervals, and other modifications may be made without departing from the gist of the present invention.
而して、本考案は入力装置と、演算処理装置と
演算処理装置の送出する制御量により送液量が制
御される定流量ポンプを用いて、予め内部に検量
線を記憶しておき、これにより所望の送液量又は
流量を直ちに吐出するようにしたので、送液精度
が極めて高く、例えば化学自動分析等における分
注用等に利用して好適なものである。そして、送
液量又は流量の設定は入力装置に直接所望の送液
量又は流量を入力できるので使用し易いものであ
る。 Therefore, the present invention uses an input device, an arithmetic processing unit, and a constant flow pump whose liquid delivery amount is controlled by the control amount sent by the arithmetic processing unit, and stores a calibration curve internally in advance. Since the desired amount or flow rate of liquid is immediately discharged, the accuracy of liquid feeding is extremely high, and it is suitable for use, for example, in dispensing in automatic chemical analysis. The setting of the amount of liquid to be fed or the flow rate is easy to use because the desired amount or flow rate of liquid to be fed can be directly input into the input device.
第1図は本考案の一実施例を示すブロツク線
図、第2図はパルス数と吐出量との関係を示すグ
ラフである。
1……入力装置、2……演算処理装置、3……
ポンプ。
FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a graph showing the relationship between the number of pulses and the discharge amount. 1...Input device, 2...Arithmetic processing unit, 3...
pump.
Claims (1)
置と、演算処理装置と、演算処理装置の送出す
る電気的制御量により送液量又は流量が制御さ
れる定流量ポンプとよりなり、予め順次異なる
電気的制御量を演算処理装置から定流量ポンプ
に送出させ、この電気的制御量に対応して作動
する定流量ポンプの送液量又は流量を実測によ
り求め、前記順次異なる電気的制御量とこれら
に対応して得られた送液量又は流量実測値とを
前記入力装置を介して演算処理装置に入力し、
演算処理装置でこれら入力値から検量線を作成
して演算処理装置のメモリに記憶しておき、定
流量ポンプの送液時においては演算処理装置に
おいて入力装置により入力される送液量又は流
量を前記検量線を用いて電気的制御量に換算
し、この換算した電気的制御量を定流量ポンプ
に送出してその送液量又は流量を制御すること
を特徴とするポンプ。 2 電気的制御量がパルス数である実用新案登録
請求の範囲第1項記載のポンプ。[Scope of Claim for Utility Model Registration] 1. An input device that inputs input from the outside to a calculation processing device, a calculation processing device, and a constant flow pump whose liquid delivery amount or flow rate is controlled by an electrical control amount sent from the calculation processing device. Therefore, different electrically controlled amounts are sequentially sent from the processing unit to the constant flow pump in advance, and the liquid feeding amount or flow rate of the constant flow pump that operates in accordance with the electrically controlled amount is determined by actual measurement, and the inputting different electrically controlled amounts and correspondingly obtained liquid feeding amounts or flow rate actual measurements to the arithmetic processing device via the input device;
The arithmetic processing unit creates a calibration curve from these input values and stores it in the memory of the arithmetic processing unit, and when the constant flow pump is sending liquid, the arithmetic processing unit calculates the amount or flow rate of the liquid fed by the input device. A pump characterized in that the calibration curve is used to convert into an electrical control amount, and the converted electrical control amount is sent to a constant flow pump to control the amount of liquid fed or the flow rate. 2. The pump according to claim 1, wherein the electrically controlled amount is the number of pulses.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14836281U JPS5853885U (en) | 1981-10-06 | 1981-10-06 | pump |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14836281U JPS5853885U (en) | 1981-10-06 | 1981-10-06 | pump |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5853885U JPS5853885U (en) | 1983-04-12 |
JPS6332385Y2 true JPS6332385Y2 (en) | 1988-08-29 |
Family
ID=29941186
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14836281U Granted JPS5853885U (en) | 1981-10-06 | 1981-10-06 | pump |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5853885U (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5382639B2 (en) * | 2008-03-27 | 2014-01-08 | 兵神装備株式会社 | Flow control method and flow control system for rotary positive displacement pump |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4920701A (en) * | 1972-06-20 | 1974-02-23 |
-
1981
- 1981-10-06 JP JP14836281U patent/JPS5853885U/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4920701A (en) * | 1972-06-20 | 1974-02-23 |
Also Published As
Publication number | Publication date |
---|---|
JPS5853885U (en) | 1983-04-12 |
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