JPS58816Y2 - Liquid quantitative supply device - Google Patents

Description

【考案の詳細な説明】 この考案は所定時間ごとに一定量の液体を計量して送出
する液体の定量供給装置に関する。[Detailed Description of the Invention] This invention relates to a liquid quantitative supply device that measures and delivers a fixed amount of liquid at predetermined intervals.

従来の液体の定量供給装置としては、ローラチューブポ
ンプ、シリンダポンプ、またはベローズポンプ等がある
。Conventional liquid metering supply devices include roller tube pumps, cylinder pumps, and bellows pumps.

このうちローラチューブポンプはチューブが経時的に疲
労してくるので頻繁にチューブを交換する必要があり、
シリンダポンプはシリンダの内筒と外筒との間に寿命を
長くするために潤滑油を塗布する必要があり、使用液体
が潤滑油と反応しないものおよび相互に溶解しないもの
に制限される。Among these, roller tube pumps require frequent replacement of the tubes as they become fatigued over time.
Cylinder pumps require lubricating oil to be applied between the inner and outer cylinders to prolong their life, and the liquids used are limited to those that do not react with the lubricating oil and those that do not dissolve in each other.

また、ベローズポンプには前述のような問題点はないが
、連続使用時には送止弁に塵等が付着して送液量に大き
な変化を期たすことがあり充分な信頼性がない、などの
欠点がある。In addition, although bellows pumps do not have the problems mentioned above, during continuous use, dust etc. may adhere to the stop valve, causing a large change in the amount of liquid pumped, resulting in insufficient reliability. There are drawbacks.

この考案は上記従来の装置の欠点の解消を目的としてな
されたもので、液体の落差を利用して間欠的であるが簡
単な構成でしかも少量の電力で確実に一定量の液体を供
給しうるようにしたものである。This idea was made with the aim of eliminating the drawbacks of the conventional devices mentioned above, and it is possible to reliably supply a fixed amount of liquid using a small amount of electric power, using a drop in the liquid, intermittently, but with a simple configuration. This is how it was done.

第１図はこの考案の一実施例の系統図で、１は定量づつ
供給しようとする液体２の貯槽、３はその出口、４は三
方電磁弁、５は三方電磁弁４を所定の時間間隔で作動さ
せる駆動装置、６は接続電線、７は三方電磁弁４は連結
口１Ｎと導管８で連通された所定容量の容器、９はこの
容器７内に連通した貯槽１内の液面よりも上方で開口す
る細管で、容器７、導管８および細管で計量器１０を構
成する。Fig. 1 is a system diagram of an embodiment of this invention, in which 1 is a storage tank for liquid 2 to be supplied in fixed quantities, 3 is an outlet thereof, 4 is a three-way solenoid valve, and 5 is a three-way solenoid valve 4 that is connected at predetermined time intervals. 6 is a connecting electric wire, 7 is a three-way solenoid valve 4, a container with a predetermined capacity is communicated with the connection port 1N through a conduit 8, and 9 is a liquid level lower than the liquid level in the storage tank 1 that communicates with the container 7. The container 7, the conduit 8, and the thin tube constitute a measuring device 10, which is a thin tube that opens upward.

１１は出口３と三方電磁弁４の連結口Ｎ、０とを連通ず
る導管、１２は三方電磁弁４の連給口Ｎ・Ｃに連結され
た液体の送出管である。11 is a conduit that communicates the outlet 3 with connection ports N and 0 of the three-way solenoid valve 4, and 12 is a liquid delivery pipe connected to the connection ports N and C of the three-way solenoid valve 4.

このように構成された装置はつぎのように作動する。The device constructed in this manner operates as follows.

即ち、まず三方電磁弁４をＮ、０と１Ｎとが連通し、Ｎ
−Ｃが閉じた状態に切換えると、液体２は出口３、導管
１１．三方電磁弁４および導管８を経て容器７内に充満
し、更に細管９内を液面まで上昇して止る。That is, first, N, 0 and 1N of the three-way solenoid valve 4 are connected, and N
-C is switched to the closed state, the liquid 2 is transferred to the outlet 3, the conduit 11. The liquid fills the container 7 through the three-way solenoid valve 4 and the conduit 8, rises inside the thin tube 9 to the liquid level, and stops.

この状態における三方電磁弁４以降の液量は液面の高さ
で定まるが、液面の変動は、それに対応する細管９内の
水位の変動に伴う液量の変動にすぎず、結局、計量器１
０に分取される液量は実用上はぼ一定量となる。In this state, the amount of liquid after the three-way solenoid valve 4 is determined by the height of the liquid level, but the fluctuation in the liquid level is just a fluctuation in the amount of liquid due to the corresponding fluctuation in the water level in the thin tube 9. Vessel 1
The amount of liquid collected at zero is practically constant in practice.

つぎに三方電磁弁４を１ＮとＮ、Ｃが連通し、Ｎ・０が
閉じる状態に切換えると、計量器１０に分取された液体
２は、送出管１２から流下し、一定時間後には計量器１
０に分取された液体２に全部流出する。Next, when the three-way solenoid valve 4 is switched to a state where 1N, N, and C are connected and N and 0 are closed, the liquid 2 collected in the meter 10 flows down from the delivery pipe 12, and after a certain period of time, it is measured. Vessel 1
All of the liquid flows out into liquid 2, which is fractionated into liquid 2.

このような二つの状態をとるように、三方電磁弁４を所
定時間毎に切換える動作を駆動装置５により行なわせる
と、結局送出管１２から、一定時間毎に、一定量の液体
２１が計量されて流れ出ることになる。When the driving device 5 causes the three-way solenoid valve 4 to switch over at predetermined time intervals to achieve these two states, a predetermined amount of liquid 21 is eventually measured from the delivery pipe 12 at predetermined time intervals. It will flow out.

計量器１０に液体２を分取するのに要する時間、および
計量器１０に分取された液体２が流出する時間は、液面
の高さ、液体２の粘度、導管８，１１の太さ、容器７の
容積、細管９の太さおよび送出管１２の太さなどで定ま
る。The time required to dispense the liquid 2 to the measuring device 10 and the time for the separated liquid 2 to flow out to the measuring device 10 are determined by the height of the liquid level, the viscosity of the liquid 2, and the thickness of the conduits 8 and 11. , is determined by the volume of the container 7, the thickness of the thin tube 9, the thickness of the delivery tube 12, etc.

例えば、導管８の内径が３ｍｍ以上、計量器１０の容積
が１０ｍ１、液体２の粘度が２センチポアズ以下、三方
電磁弁４のオリフィス直径が２ｍｍ以上、容器７と液面
との水位の差が１０ｃｍ以上、容器７と流出口１２との
水位差が１０ｃｍ以上であるときは、■回の計量、送出
の動作を４０秒以下で行うことができた。For example, the inner diameter of the conduit 8 is 3 mm or more, the volume of the meter 10 is 10 m1, the viscosity of the liquid 2 is 2 centipoise or less, the orifice diameter of the three-way solenoid valve 4 is 2 mm or more, and the difference in water level between the container 7 and the liquid level is 10 cm. As described above, when the water level difference between the container 7 and the outlet 12 was 10 cm or more, the measurement and delivery operations could be performed twice in 40 seconds or less.

なお上記諸条件を適宜変更することにより、所望量の計
量を、所望の頻度で行いうろことは多く説明するまでも
なく明らかであろう。It will be obvious without much explanation that by appropriately changing the above conditions, a desired amount of measurement can be performed at a desired frequency.

第２図はこの考案の応用例で、この考案に係る液体の定
量供給装置を２台組合せ、一定量の計量した被検液に、
一定量の分析試薬を添加したのち分析計に導入するよう
にした分析装置の系統図で、被検液２ｂおよび分析試薬
２ａは共通の駆動装置５により、第１図の実施例と全く
同様の操作によって一定液量で液体計量器４ａおよび４
ｂに分取された後、混合器１３で均一混合され、光学的
、電気化学的またはその他の適切な方法による分析計１
４によって目的成分を測定される。Figure 2 shows an application example of this invention, in which two quantitative liquid supply devices according to this invention are combined to supply a fixed amount of measured liquid to the sample.
This is a system diagram of an analyzer in which a certain amount of analytical reagent is added and then introduced into the analyzer, and the test liquid 2b and the analytical reagent 2a are driven by a common drive device 5 in exactly the same way as in the embodiment shown in FIG. The liquid measuring devices 4a and 4 have a constant liquid volume depending on the operation.
After being fractionated in b, the mixture is uniformly mixed in a mixer 13, and then transferred to an analyzer 1 using an optical, electrochemical or other appropriate method.
4, the target component is measured.

以上のようにこの考案によれば、任意の容積の液体計量
器と三方電磁弁、駆動装置および液体の貯槽とを組合せ
、液体の落差を活用して一定頻度で液体を計量して流出
させるように威したので、装置が安価にできるうえ、従
来の各種定量ポンプと比較して回転部や摩耗の恐れがあ
る頻繁な往復運動部がないため長寿命であり、がつ広い
範囲の流量にわたって適用できる液体定量供給装置とす
ることができる。As described above, according to this invention, a liquid measuring device of arbitrary volume, a three-way solenoid valve, a driving device, and a liquid storage tank are combined, and the liquid is measured and drained at a constant frequency by utilizing the head of the liquid. This makes the device less expensive, and compared to conventional metering pumps, there are no rotating parts or frequent reciprocating parts that can wear out, so it has a long life, and can be applied over a wide range of flow rates. It can be used as a liquid metering supply device.

この装置は各種被処理水への薬液の一定流速での供給に
、ガス洗浄帯への一定流速での一種類以上の薬液の供給
、または湿式の水またはガス分析装置の薬液供給装置と
して、更には２種以上の液体の一定割合での混合等に適
用することができる。This device can be used to supply chemical solutions at a constant flow rate to various types of water to be treated, to supply one or more types of chemical solutions at a constant flow rate to a gas washing zone, or as a chemical solution supply device for wet water or gas analyzers. can be applied to mixing two or more types of liquids at a constant ratio.

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

第１図はこの考案の一実施例の系統図、第２図はこの考
案の応用例の系統図である。 図において、１，１ ａ、１ ｂは液体の貯槽、２は液
体、２ａは被検液、２ｂは分析試薬、３，３ ａ 、３
ｂは出口、４，４ ａ 、４ ｂは三方電磁弁、５は
駆動装置、６，６ａ、６ｂは接続電線、７，７ ａ 、
７ ｂは容器、８，８ ａ 、８ｂ、１１，１１ ａ、
１１ ｂは導管、９，９ ａ 、９ ｂは細管、１０゜
１０ ａ 、１０ ｂは計量器、１２，１２ ａ 、１
２ ｂ ハ送出口、１３は混合器、１４は分析計である
。FIG. 1 is a system diagram of an embodiment of this invention, and FIG. 2 is a system diagram of an application example of this invention. In the figure, 1, 1 a, 1 b are liquid storage tanks, 2 is liquid, 2 a is test liquid, 2 b is analytical reagent, 3, 3 a, 3
b is an outlet, 4, 4 a, 4 b is a three-way solenoid valve, 5 is a drive device, 6, 6 a, 6 b are connecting wires, 7, 7 a,
7 b is a container, 8, 8 a, 8 b, 11, 11 a,
11 b is a conduit, 9, 9 a, 9 b is a thin tube, 10° 10 a, 10 b is a measuring instrument, 12, 12 a, 1
2b c) a delivery port, 13 a mixer, and 14 an analyzer.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 計量して供給しようとする液体の貯槽、この貯槽の吐出
口と三方弁を介して連結されその三方弁によって連通さ
れたとき上記貯槽内の液体の水圧によりその液体が充満
せしめる所定容量の容器とこの容器内と連通して上記貯
槽の液面上で開口する細管とよりなる液体の計量器、お
よび上記三方弁を駆動して上記貯槽の吐出口と上記容器
とを連通ずる状態と、上記貯槽の吐出口を閉じ上記容器
内と液体の送出口とを連通してその容器内の液体を吐出
する状態に切換える弁切換装置を備え、上記弁切換装置
を所定時間間隔で上記二つの状態に交互に切換えるよう
にした液体の定量供給装置。A storage tank for a liquid to be metered and supplied, and a container of a predetermined capacity that is connected to the discharge port of this storage tank via a three-way valve and is filled with the liquid by the water pressure of the liquid in the storage tank when communicated by the three-way valve. a liquid meter comprising a thin tube that communicates with the inside of the container and opens above the liquid surface of the storage tank; a state in which the three-way valve is driven to communicate the discharge port of the storage tank with the container; and the storage tank. A valve switching device is provided for switching the discharge port to a state in which the liquid in the container is discharged by communicating the inside of the container with the liquid delivery port, and the valve switching device is alternately switched between the two states at predetermined time intervals. A liquid quantitative supply device that switches to