JPH08141379A - Mixer - Google Patents
MixerInfo
- Publication number
- JPH08141379A JPH08141379A JP6293264A JP29326494A JPH08141379A JP H08141379 A JPH08141379 A JP H08141379A JP 6293264 A JP6293264 A JP 6293264A JP 29326494 A JP29326494 A JP 29326494A JP H08141379 A JPH08141379 A JP H08141379A
- Authority
- JP
- Japan
- Prior art keywords
- mixed
- liquid
- mixing
- pipe
- mixing pipe
- 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.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/40—Static mixers
- B01F25/45—Mixers in which the materials to be mixed are pressed together through orifices or interstitial spaces, e.g. between beads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/40—Static mixers
- B01F25/45—Mixers in which the materials to be mixed are pressed together through orifices or interstitial spaces, e.g. between beads
- B01F25/452—Mixers in which the materials to be mixed are pressed together through orifices or interstitial spaces, e.g. between beads characterised by elements provided with orifices or interstitial spaces
- B01F25/4521—Mixers in which the materials to be mixed are pressed together through orifices or interstitial spaces, e.g. between beads characterised by elements provided with orifices or interstitial spaces the components being pressed through orifices in elements, e.g. flat plates or cylinders, which obstruct the whole diameter of the tube
- B01F25/45211—Mixers in which the materials to be mixed are pressed together through orifices or interstitial spaces, e.g. between beads characterised by elements provided with orifices or interstitial spaces the components being pressed through orifices in elements, e.g. flat plates or cylinders, which obstruct the whole diameter of the tube the elements being cylinders or cones which obstruct the whole diameter of the tube, the flow changing from axial in radial and again in axial
Landscapes
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、例えば、超純水製造プ
ラントにおいて供給水に少量の薬品をパルス注入する場
合のように、大量の低粘度液体中に少量の液体を効率よ
く、かつ均一に混合することのできる混合装置に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention efficiently and uniformly distributes a small amount of liquid in a large amount of low-viscosity liquid such as in the case of pulse injection of a small amount of chemicals into feed water in an ultrapure water production plant. The present invention relates to a mixing device capable of mixing with each other.
【０００２】[0002]
【従来の技術】従来から、超純水製造プラントにおいて
供給水とパルス注入された少量の薬品とを混合する場合
には、ラインミキサーのような非駆動型の混合装置が用
いられている。2. Description of the Related Art Conventionally, a non-driving type mixing device such as a line mixer has been used for mixing feed water and a small amount of chemicals pulse-injected in an ultrapure water production plant.
【０００３】しかしながら、従来のラインミキサーで
は、少量の薬品がパルス注入される場合には、時間軸方
向の混合が十分に行うことができず、濃度の脈動を阻止
できないという問題があった。However, the conventional line mixer has a problem that when a small amount of chemicals is pulse-injected, the mixing in the time axis direction cannot be sufficiently performed and the pulsation of the concentration cannot be prevented.
【０００４】パルス注入の時間軸方向の混合を十分行な
わせるためには、薬品の添加された供給水を一旦タンク
に溜め、撹拌機により撹拌させるようにすればよいが、
このようにタンクに供給水を溜めるようにすると、装置
が大型化して設備コストが高くなる上に、装置を設置す
るためのスペースが多く必要になるという問題があっ
た。In order to sufficiently perform the mixing in the time axis direction of the pulse injection, the chemical-added feed water may be temporarily stored in a tank and stirred by a stirrer.
When the supply water is stored in the tank as described above, there is a problem that the device becomes large in size and the facility cost becomes high, and more space is required for installing the device.
【０００５】[0005]
【発明が解決しようとする課題】上述のように、従来の
ラインミキサーのような混合装置では、少量の薬品がパ
ルス注入される場合には、時間軸方向の混合が十分に行
うことができないという問題があり、また、時間方向の
混合を十分行なわせるために、薬品の添加された供給水
を一旦タンクに溜めて撹拌させるようにすると、装置が
大型化して設備コストが高くなる上に、装置を設置する
ためのスペースが多く必要になるという問題があった。As described above, in a conventional mixing device such as a line mixer, when a small amount of a drug is pulse-injected, it is impossible to sufficiently perform mixing in the time axis direction. There is a problem, and if the chemical-added feed water is once stored in a tank and agitated in order to perform sufficient mixing in the time direction, the equipment becomes large and the equipment cost increases, and the equipment is There was a problem that a lot of space for setting up was needed.
【０００６】本発明は上記の問題を解決するためになさ
れたもので、薬品等のパルス注入に対して効率良く混合
を行なうことのできるコンパクトな混合装置を提供する
ことを目的としている。The present invention has been made to solve the above problems, and an object of the present invention is to provide a compact mixing apparatus capable of efficiently mixing pulse injection of chemicals or the like.
【０００７】[0007]
【課題を解決するための手段】本発明の混合装置は、上
述した目的を達成するために、両端に端板を有する密閉
円筒形本体と、前記密閉円筒形本体の一端近傍の側面か
ら該密閉円筒形本体の中心から外れた位置に向けて挿入
された入口管と、前記密閉円筒形本体の他端の端板から
中心線に沿って挿入された先端が閉塞され外周に多数の
小孔を有する混合管とからなることを特徴としている。In order to achieve the above-mentioned object, a mixing apparatus of the present invention comprises a closed cylindrical main body having end plates at both ends, and a closed cylindrical main body from a side surface near one end of the closed cylindrical main body. An inlet pipe inserted toward a position deviated from the center of the cylindrical main body and a tip inserted along the center line from the end plate at the other end of the closed cylindrical main body are closed to form a large number of small holes on the outer periphery. It is characterized by comprising a mixing tube having.
【０００８】[0008]
【作用】本発明の混合装置では、例えば、少量の薬品が
パルス注入された供給水のような被混合液が、入口管か
ら流入すると、この被混合液は、密閉円筒形本体内を内
壁に沿って他端側に向けて回流しつつ、小孔から混合管
内に流入する。この時、混合管内に流入する被混合液は
小孔を通過する際に激しい渦流を形成して、他の小孔か
ら流入した被混合液と混合管内で十分に混合される。混
合管内で均一に混合された液体は、混合管の出口から出
口管へ放出される。In the mixing apparatus of the present invention, for example, when a liquid to be mixed, such as feed water, into which a small amount of chemicals has been pulse-injected, flows from the inlet pipe, the liquid to be mixed forms an inner wall inside the closed cylindrical body. While flowing toward the other end along the same, it flows into the mixing pipe through the small holes. At this time, the liquid to be mixed flowing into the mixing pipe forms a violent vortex when passing through the small holes, and is sufficiently mixed with the liquid to be mixed flowing from the other small holes in the mixing pipe. The liquid uniformly mixed in the mixing pipe is discharged from the outlet of the mixing pipe to the outlet pipe.
【０００９】[0009]
【実施例】以下、本発明の実施例を図面に基づいて説明
する。Embodiments of the present invention will be described below with reference to the drawings.
【００１０】図１は本発明の一実施例の混合装置の側面
図、図２はその横断面図、図３はその混合装置内部の混
合管の側面図である。FIG. 1 is a side view of a mixing apparatus according to an embodiment of the present invention, FIG. 2 is a cross sectional view thereof, and FIG. 3 is a side view of a mixing tube inside the mixing apparatus.
【００１１】これらの図において、密閉円筒形本体１
は、透明塩ビ管からなる両端にフランジ１ａ，１ｂが内
外面全周溶接により固着されている。密閉円筒形本体１
の一端は、フランジ１ａに同径の端板２がガスケット
（図示せず）を介してボルトで固定されて密閉端とされ
ている。In these figures, the closed cylindrical body 1
Has flanges 1a and 1b fixed to both ends of a transparent PVC pipe by welding the entire inner and outer surfaces. Closed cylindrical body 1
An end plate 2 having the same diameter is fixed to the flange 1a with a bolt (not shown) via a gasket (not shown) to form a closed end.
【００１２】密閉円筒形本体１の密閉端近傍の外周には
円孔が形成され、この円孔には入口管３が挿入され内外
面全周溶接により密閉円筒形本体１に固着されている。
入口管３の先端は、供給水が密閉円筒形本体１の内周に
沿って回流するように、密閉円筒形本体１の中心から外
れた位置に向けて挿入されている。A circular hole is formed in the outer periphery of the closed cylindrical body 1 in the vicinity of the closed end, and an inlet pipe 3 is inserted into the circular hole and fixed to the closed cylindrical body 1 by welding the entire inner and outer surfaces.
The tip of the inlet pipe 3 is inserted toward a position deviated from the center of the closed cylindrical main body 1 so that the supply water circulates along the inner circumference of the closed cylindrical main body 1.
【００１３】また、密閉円筒形本体１の反対側の端部に
は、フランジ１ｂに同径の端板４がガスケット（図示せ
ず）を介してボルトで固定され、この端板４を貫通して
混合管５が密閉円筒形本体１中に挿入されている。端板
４は、図３に示すように、内外面全周溶接により混合管
５の基部にフラン状に固設されている。混合管５は、先
端を端板で閉塞するとともに、端板４の内側に位置する
外周には多数の小孔６が等間隔で碁盤目状に穿設されて
いる。An end plate 4 having the same diameter is fixed to the flange 1b with a bolt (not shown) through a gasket (not shown) at the opposite end of the closed cylindrical main body 1, and the end plate 4 is penetrated. A mixing tube 5 is inserted into the closed cylindrical body 1. As shown in FIG. 3, the end plate 4 is fixed to the base of the mixing pipe 5 in a flan shape by welding the entire circumference of the inner and outer surfaces. The mixing tube 5 has its tip closed with an end plate, and a large number of small holes 6 are formed in a grid pattern at equal intervals on the outer periphery located inside the end plate 4.
【００１４】つぎに本発明の混合装置を使用した実験例
を図４に基づいて説明する。Next, an experimental example using the mixing apparatus of the present invention will be described with reference to FIG.
【００１５】同図に示す混合装置は、濾過水配管を混合
装置の入口管に接続するとともに、濾過水配管に各種の
薬品（ＮａＯＨ、フロコン、Ｎａ2 ＳＯ3 ）をパルス注
入する枝管を接続させ、また、混合管に接続する出口配
管にｐＨ計、（ＯＲＰ）を配設して処理水のｐＨとＯＲ
Ｈを測定できるようにされている。In the mixing device shown in the figure, a filtered water pipe is connected to an inlet pipe of the mixing device, and a branched pipe for pulse-injecting various chemicals (NaOH, Flocon, Na 2 SO 3 ) is connected to the filtered water pipe. In addition, the outlet pipe connected to the mixing pipe is equipped with a pH meter (ORP) to adjust the pH of the treated water and the OR.
It is designed to measure H.
【００１６】なお、混合装置は、図１乃至図３で示した
実施例とほぼ同構造の装置であるので対応部分に同一符
号を付して説明は省略する。符号７は排出管である。Since the mixing device has substantially the same structure as that of the embodiment shown in FIGS. 1 to 3, the corresponding parts are designated by the same reference numerals and the description thereof will be omitted. Reference numeral 7 is a discharge pipe.
【００１７】実験では、濾過水８にＮａＯＨ水溶液をパ
ルス注入して混合装置９を通過させ、一定時間間隔ごと
に逆浸透膜装置（ＲＯ）１０の入口で被混合液のｐＨ値
を計測して混合状態を確認した。In the experiment, a NaOH aqueous solution was pulse-injected into the filtered water 8 to pass through the mixing device 9, and the pH value of the liquid to be mixed was measured at the inlet of the reverse osmosis membrane device (RO) 10 at regular time intervals. The mixed state was confirmed.
【００１８】実験の条件は次の通りである。The conditions of the experiment are as follows.
【００１９】［使用機器］ ｐＨ計：堀場ＴＤ−９６０ ＮａＯＨ薬注ポンプ：日機装ＮＳＰ０１−Ｐ２ＳＣ−２
２ＭＥ（注入量手動調節型） ［濾過水］ 原水：琵琶湖水を濾過した水 ｐＨ値：６．８〜７．２ 塩素濃度：０．８ppm 流量：１６ｍ3 ／Ｈ ［測定条件］ 混合装置９からｐＨ計までの配管長：約１５ｍ 濾過水流量：一定 水温：３０．８℃（逆浸透膜装置出口） 薬品注入：パルス注入 なお、混合装置の容積は、本実験で予想される最大パル
ス時間間隔の２倍以上の滞流時間をとることができる容
積を目標とした。すなわち、例えば、媒体流体の定格流
量が９ｌ／ｓｅｃ、最大パルス間隔が２ｓｅｃでは、９
ｌ／ｓｅｃ×２ｓｅｃ×２＝３６ ｌとなるから、混合
装置の容積を５０ ｌ、定格流量での滞流時間を５ｓｅ
ｃとした。[Apparatus used] pH meter: Horiba TD-960 NaOH chemical injection pump: Nikkiso NSP01-P2SC-2
2ME (Injection volume manual adjustment type) [Filtration water] Raw water: Water obtained by filtering Lake Biwa water pH value: 6.8 to 7.2 Chlorine concentration: 0.8 ppm Flow rate: 16 m 3 / H [Measurement conditions] From mixing device 9 Pipe length up to pH meter: Approximately 15 m Flow rate of filtered water: Constant water temperature: 30.8 ° C (Outlet of reverse osmosis membrane device) Chemical injection: Pulse injection The volume of the mixing device is the maximum pulse time interval expected in this experiment. The target was a volume capable of taking a stagnant time of more than twice. That is, for example, when the rated flow rate of the medium fluid is 9 l / sec and the maximum pulse interval is 2 sec, 9
Since 1 / sec × 2 sec × 2 = 36 l, the volume of the mixing device is 50 l, and the stagnant time at the rated flow rate is 5 se.
c.
【００２０】実験の経過は次のとおりであった。The course of the experiment was as follows.
【００２１】まず、濾過水を上記の条件で配管１１に流
しながら、次表の時間間隔で、濾過水にＮａＯＨ水溶液
をパルス注入した。First, while flowing the filtered water through the pipe 11 under the above conditions, the NaOH aqueous solution was pulse-injected into the filtered water at the time intervals shown in the following table.
【００２２】[0022]
【表１】 ＮａＯＨ水溶液がパルス注入された被混合液は、入口管
３から密閉円筒形本体１へ流入して、密閉円筒形本体１
内を回流し、小孔６から混合管５内へ流入して混和され
る。被混合液は混合管５から密閉円筒形本体１外へ流出
し、ｐＨ計でｐＨ値が計測されて、逆浸透膜装置１０へ
流入する。[Table 1] The liquid mixture into which the NaOH aqueous solution has been pulse-injected flows into the closed cylindrical main body 1 from the inlet pipe 3, and the closed cylindrical main body 1
It circulates inside and mixes by flowing into the mixing pipe 5 through the small holes 6. The liquid to be mixed flows out from the mixing pipe 5 to the outside of the closed cylindrical main body 1, the pH value is measured by a pH meter, and the mixed liquid flows into the reverse osmosis membrane device 10.
【００２３】このような装置によって、薬品のパルス注
入量を変更して本発明の混合装置を用いて混和し、ｐＨ
値を計測した結果を図５に示す。With such a device, the pulse injection amount of the drug is changed, and the mixture is mixed by using the mixing device of the present invention.
The results of measuring the values are shown in FIG.
【００２４】この図から明らかなように、混合液は、時
間経過によるｐＨ値の変化がほとんどなく、均一に混合
されていることが確認された。As is clear from this figure, it was confirmed that the mixed solution was homogeneously mixed with almost no change in pH value over time.
【００２５】[0025]
【発明の効果】以上説明したように本発明の混合装置に
よれば、入口管が、密閉円筒形本体の一端近傍の側面か
ら該密閉円筒形本体の中心から外れた位置に向けて挿入
されているので、流入した被処理水は、密閉円筒形本体
の内壁に沿って回流しつつ混合管の小孔から混合管内に
乱流となって流入し、均一に混和される。As described above, according to the mixing apparatus of the present invention, the inlet pipe is inserted from the side surface near one end of the closed cylindrical body toward the position deviated from the center of the closed cylindrical body. Therefore, the inflowing treated water flows along the inner wall of the closed cylindrical main body as a turbulent flow into the mixing tube from the small holes of the mixing tube, and is uniformly mixed.
【００２６】そして、本発明では、混合管の長さ方向の
全周から混合管内に被混合液が混合管内に流入するので
被混合液の時間方向の混和が良好に行われる。In the present invention, the liquid to be mixed flows into the mixing pipe from the entire circumference in the lengthwise direction of the mixing pipe, so that the liquid to be mixed is favorably mixed in the time direction.
【００２７】また、本発明の混合装置は、構造が簡単で
あるので、容易に小型化することができ、広範の用途に
適用することができる。Further, since the mixing apparatus of the present invention has a simple structure, it can be easily miniaturized and can be applied to a wide range of applications.
【図１】本発明の一実施例の混合装置の側面図である。FIG. 1 is a side view of a mixing device according to an embodiment of the present invention.
【図２】図１に示した装置のII−IIに沿う横断面図であ
る。2 is a cross-sectional view taken along the line II-II of the device shown in FIG.
【図３】図１に示した混合装置内部の混合管の側面図で
ある。3 is a side view of a mixing tube inside the mixing device shown in FIG. 1. FIG.
【図４】本発明の一実施例の混合装置を使用した実験例
のシステム構成を示す図である。FIG. 4 is a diagram showing a system configuration of an experimental example using the mixing apparatus according to the embodiment of the present invention.
【図５】本発明の実験結果であるｐＨ測定値を示したグ
ラフである。FIG. 5 is a graph showing measured pH values as experimental results of the present invention.
１…密閉円筒形本体、１ａ、１ｂ…フランジ、２、４…
端板、３…入口管、５…混合管、６…小孔。1 ... Closed cylindrical body 1a, 1b ... Flange, 2, 4 ...
End plate, 3 ... inlet pipe, 5 ... mixing pipe, 6 ... small hole.
Claims (1)
本体の中心から外れた位置に向けて挿入された入口管
と、 前記密閉円筒形本体の他端の端板から中心線に沿って挿
入された先端が閉塞され外周に多数の小孔を有する混合
管とからなることを特徴とする混合装置。1. A closed cylindrical main body having end plates at both ends, an inlet pipe inserted from a side surface near one end of the closed cylindrical main body toward a position deviated from the center of the closed cylindrical main body, A mixing device comprising: a closed cylindrical main body; and a mixing pipe having a large number of small holes on its outer periphery, the distal end being inserted along the center line from the end plate at the other end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6293264A JPH08141379A (en) | 1994-11-28 | 1994-11-28 | Mixer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6293264A JPH08141379A (en) | 1994-11-28 | 1994-11-28 | Mixer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08141379A true JPH08141379A (en) | 1996-06-04 |
Family
ID=17792576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6293264A Withdrawn JPH08141379A (en) | 1994-11-28 | 1994-11-28 | Mixer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08141379A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101350893B1 (en) * | 2012-04-19 | 2014-01-10 | (주)우성하이텍 | apparatus for supplying and regulating nutrient solution automatically |
| US9138697B2 (en) | 2008-10-20 | 2015-09-22 | Asahi Organic Chemicals Industry Co., Ltd. | Spiral type fluid mixer and apparatus using spiral type fluid mixer |
| US9259694B2 (en) | 2008-08-07 | 2016-02-16 | Asahi Organic Chemicals Industry Co., Ltd. | Fluid mixer and apparatus using fluid mixer |
-
1994
- 1994-11-28 JP JP6293264A patent/JPH08141379A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9259694B2 (en) | 2008-08-07 | 2016-02-16 | Asahi Organic Chemicals Industry Co., Ltd. | Fluid mixer and apparatus using fluid mixer |
| US9138697B2 (en) | 2008-10-20 | 2015-09-22 | Asahi Organic Chemicals Industry Co., Ltd. | Spiral type fluid mixer and apparatus using spiral type fluid mixer |
| KR101350893B1 (en) * | 2012-04-19 | 2014-01-10 | (주)우성하이텍 | apparatus for supplying and regulating nutrient solution automatically |
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| A300 | Application deemed to be withdrawn because no request for examination was validly filed |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20020205 |