JP2511755B2 - Liquid chemical injection device for water treatment equipment - Google Patents
Liquid chemical injection device for water treatment equipmentInfo
- Publication number
- JP2511755B2 JP2511755B2 JP3269967A JP26996791A JP2511755B2 JP 2511755 B2 JP2511755 B2 JP 2511755B2 JP 3269967 A JP3269967 A JP 3269967A JP 26996791 A JP26996791 A JP 26996791A JP 2511755 B2 JP2511755 B2 JP 2511755B2
- Authority
- JP
- Japan
- Prior art keywords
- tank
- chemical liquid
- liquid
- chemical
- 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.)
- Expired - Fee Related
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J4/00—Feed or outlet devices; Feed or outlet control devices
- B01J4/008—Feed or outlet control devices
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
Description
【0001】[0001]
【産業上の利用分野】本発明は、汚水を浄化処理する水
処理装置の、汚水槽・PH調整槽・曝気槽等の処理槽内
に、塩素剤・消泡剤・PH調整剤・微生物の栄養剤等の
薬液を、点滴状に滴下させて注入するための注入装置に
ついての改良に関する。TECHNICAL FIELD The present invention relates to a chlorine treatment agent, a defoaming agent, a pH control agent, and a microorganism in a treatment tank such as a sewage tank, a pH adjusting tank, and an aeration tank of a water treatment device for purifying sewage. The present invention relates to an improvement of an injection device for injecting a drug solution such as a nutrient solution in a drip form.
【0002】[0002]
【従来の技術】水処理装置の処理槽内の汚水に対して薬
液を滴下して注入する手段は、従前にあっては、通常、
図1に示しているように、汚水等の被処理液aが張込ま
れている処理槽bの上方に、薬液タンク1を適宜の支持
部材により支架して、それの底部に、薬液を流出させて
処理槽b内の被処理液aに対して注入する注入管2を接
続し、その注入管2に開度を調整するバルブVを付設し
ておいてそのバルブVの開度の制御作動により、注入管
2からの薬液の流出が、極く少量づつ点滴状に滴下して
いくよう調整することで行なうか、図2に示している如
く、被処理液aが張込まれている処理槽bの上方に支架
した薬液タンク1に、薬液を汲み出す定量ポンプPを組
付けて、その定量ポンプPの吐出口に、薬液を処理槽b
内の被処理液aに対し流出させる注入管2を接続してお
いて、定量ポンプPの作動の制御により、注入管2から
の薬液の流出が、点滴状に滴下していくように調整する
ことで行なわれている。2. Description of the Related Art Means for dripping and injecting a chemical solution into wastewater in a treatment tank of a water treatment apparatus has conventionally been conventionally used.
As shown in FIG. 1, a chemical solution tank 1 is supported by an appropriate supporting member above a treatment tank b in which a liquid to be treated a such as sewage has been filled, and the chemical solution flows out to the bottom thereof. Then, an injection pipe 2 for injecting into the liquid to be treated a in the treatment tank b is connected, and a valve V for adjusting the opening is attached to the injection pipe 2 to control the opening of the valve V. By adjusting the flow of the chemical solution from the injection pipe 2 so as to be dripped in a very small amount in a drip state, or as shown in FIG. A metering pump P for pumping out the medicinal solution is attached to the medicinal solution tank 1 supported above the tank b, and the medicinal solution is treated at the discharge port of the metering pump P.
The injection pipe 2 for flowing out to the liquid to be treated a therein is connected, and by controlling the operation of the metering pump P, the outflow of the chemical liquid from the injection pipe 2 is adjusted so as to be drip-shaped. It is done by that.
【0003】また、薬液タンク1を密閉容器に形成し
て、それの上部に通気管を接続し、その通気管を経て密
閉容器よりなる薬液タンク1内に流入する通気量を調整
することで、薬液タンク1の底部に連通する注入管2か
らの薬液の流出量を制御する手段が、実開昭47−28
744号公報により提案されている。Further, by forming the liquid medicine tank 1 in a hermetically sealed container, connecting a ventilation pipe to the upper part of the liquid medicine tank 1, and adjusting the amount of air flowing into the liquid medicine tank 1 made of the hermetically sealed container through the air ventilation pipe, Means for controlling the outflow amount of the drug solution from the injection pipe 2 communicating with the bottom of the drug solution tank 1 is disclosed in Japanese Utility Model Laid-Open No. 47-28.
No. 744 publication.
【0004】[0004]
【発明が解決しようとする課題】従前の手段は、図1に
示す手段にあっては、注入管2からの薬液の滴下が、点
滴状に極く少量づつ行なわれるようにするのを、注入管
2に設けたバルブVの開度を調整することで行なうこと
から、調整されたバルブVの開口が極く狭い間隙になる
ことで、薬液中に混入する微細なごみや、薬液から析出
している薬液成分の結晶などが、バルブVの開口に引き
かかって目詰りを起すようになるので、安定した薬液の
注入が行なえない問題がある。According to the conventional means, in the means shown in FIG. 1, the injection of the liquid medicine from the injection pipe 2 is carried out in a very small amount like a drip. Since the adjustment is performed by adjusting the opening degree of the valve V provided in the pipe 2, the adjusted opening of the valve V becomes a very narrow gap, so that fine dust mixed in the chemical solution or precipitation from the chemical solution is generated. Since the crystal of the chemical liquid component that is present is caught on the opening of the valve V and causes clogging, there is a problem that the stable injection of the chemical liquid cannot be performed.
【0005】また、図2に示す手段にあっては、定量ポ
ンプPを用いることから、コストが嵩むことと、定量ポ
ンプPの駆動のために電源が必要となる制約があり、か
つ、メンテナンスが著しく面倒になる問題がある。Further, in the means shown in FIG. 2, since the metering pump P is used, the cost is increased, there is a restriction that a power source is required to drive the metering pump P, and the maintenance is required. There is a problem that becomes extremely troublesome.
【0006】また、実開昭47−28744号公報にあ
る手段にあっては、密閉容器よりなる薬液タンク1の上
部に連通させた通気管からの薬液タンク1に対する通気
量の調整がむづかしく、その通気量を、所定の薬液の滴
下量に対応するように調整・制御するのが困難な問題が
ある。Further, in the means disclosed in Japanese Utility Model Laid-Open No. 47-28744, it is difficult to adjust the amount of ventilation to the chemical liquid tank 1 from the ventilation pipe communicating with the upper portion of the chemical liquid tank 1 formed of a closed container. However, there is a problem that it is difficult to adjust and control the amount of ventilation so as to correspond to a predetermined amount of the chemical liquid dropped.
【0007】本発明は、従来手段に生じているこれらの
問題を解決するためになされたものであって、密閉容器
とした薬液タンクの上部に接続する通気管からの通気量
の制御で、薬液の滴下量を制御する電気を用いない簡略
な構成としながら、薬液中に微細なごみや析出物が存在
していても、薬液の滴下が極く少量づつ点滴状に行なわ
れるよう調整するのが、注入管および通気管に目詰まり
を生ぜしめることなく、安定して薬液の滴下注入が行な
えるようにする新たな手段を提供することを目的とす
る。The present invention has been made in order to solve these problems occurring in the conventional means, and the chemical liquid is controlled by controlling the ventilation amount from a ventilation pipe connected to the upper part of the chemical liquid tank which is a closed container. Even though there is fine dust or precipitates in the chemical solution, it is possible to adjust the drop amount of the chemical solution in a drip form in very small amounts, while having a simple configuration that does not use electricity to control the drop amount. It is an object of the present invention to provide a new means for stably performing a drop injection of a drug solution without causing clogging of the injection pipe and the ventilation pipe.
【0008】[0008]
【課題を解決するための手段】しかして、本発明は、上
述の目的のために、種々の研究と実験を重ねて得られた
知見に基づいて完成したものである。SUMMARY OF THE INVENTION The present invention, however, has been completed on the basis of the knowledge obtained through various studies and experiments for the above purpose.
【0009】即ち、従前の手段は、注入管2から滴下し
ていく薬液の滴下量を調整するのに、薬液の流出量を直
接制御するようにしていることから種々の問題が生じて
いるのであり、薬液タンクを密閉容器に形成して、それ
の底部に連通する注入管からの薬液の流出が、薬液タン
ク内の空気の圧力により制御されるようにしておいて、
この薬液タンクの上部に外部に対し連通する通気管を接
続し、その通気管の外端側に集泡器を接続して、その集
泡器を、処理槽に隣接する曝気槽内の被処理液の中に挿
入し、曝気槽内の被処理液中に吹き込まれる曝気用の空
気の泡の一部をこの集泡器で捕集して通気管を介し薬液
タンクに送給するようにして、この集泡器で収集する気
泡量により通気管の通気量を調整するようにしたとこ
ろ、良好な結果が得られたことによるものである。That is, since the conventional means is designed to directly control the outflow amount of the chemical liquid in order to adjust the amount of the chemical liquid dropped from the injection pipe 2, various problems occur. Yes, the chemical solution tank is formed in a closed container, and the outflow of the chemical solution from the injection pipe communicating with the bottom of the chemical solution tank is controlled by the pressure of the air in the chemical solution tank.
An aeration pipe communicating with the outside is connected to the upper part of this chemical solution tank, and a foam collector is connected to the outer end side of the ventilation pipe, and the foam collector is treated in the aeration tank adjacent to the treatment tank. It is inserted into the liquid and a part of the aeration air bubbles blown into the liquid to be treated in the aeration tank is collected by this bubble collector and sent to the chemical liquid tank through the ventilation pipe. The reason for this is that good results were obtained when the ventilation amount of the ventilation pipe was adjusted by the amount of bubbles collected by this foam collector.
【0010】そして、このことから本発明においては、
上述の目的を達成するための手段として、水処理装置
の、汚水槽・PH調整槽・曝気槽等の処理槽の上部開放
口の上方に、塩素剤・消泡剤・PH調整剤・微生物・栄
養剤等の薬液を滴下する注入管を配設し、その注入管の
基端側を、薬液装入口が開閉蓋により密封される密閉容
器よりなる薬液タンクの底部に接続連通し、その薬液タ
ンクをそれの底部が前記注入管の先端開口より高く位置
するよう支架し、該薬液タンクの上端部側に、外部から
気体を該薬液タンク内に流入させる通気管を接続し、そ
の通気管の外端側に逆漏斗状の集泡器を接続し、その集
泡器を、処理槽に隣接する曝気槽内の被処理液に吹き込
まれて旋回流動する曝気用の空気の泡の一部を捕集する
ようその被処理液に対し挿入し、その集泡器が収集する
気泡量により通気管の通気量を制御し注入管からの薬液
の滴下量を制御するようにした水処理装置における薬液
の注入装置を提起するものである。From this, in the present invention,
As a means for achieving the above-mentioned object, a chlorine agent, an antifoaming agent, a PH adjusting agent, a microorganism, An injection pipe for dropping a liquid medicine such as a nutrient solution is provided, and the base end side of the injection pipe is connected and communicated with the bottom of a liquid medicine tank consisting of a closed container whose liquid medicine inlet is sealed by an opening / closing lid. Is supported so that its bottom portion is located higher than the tip opening of the injection pipe, and a ventilation pipe for allowing gas to flow into the chemical liquid tank from the outside is connected to the upper end portion side of the chemical liquid tank. A reverse funnel-shaped foam collector is connected to the end side, and this foam collector is blown into the liquid to be treated in the aeration tank adjacent to the treatment tank to capture a part of the aeration air bubbles that swirl and flow. The aeration tube is inserted into the liquid to be treated so that it collects and the amount of bubbles collected by the foam collector Is intended to raise the infusion of the chemical in the water treatment apparatus adapted to control the dropping amount of the chemical liquid from the injection tube to control the amount of aeration.
【0011】[0011]
【実施例】次に本発明による水処理装置の薬液注入装置
の実施例を、図面に従い詳述する。なお、図面符号は、
従前手段のものと同効の構成部材については同一の符号
を用いるものとする。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a chemical injection device for a water treatment device according to the present invention will be described in detail below with reference to the drawings. In addition, the drawing symbols are
The same reference numerals are used for components having the same effect as those of the conventional means.
【0012】図3は、本発明による水処理装置の薬液注
入装置の一部破断した正面図で、図において、1は薬液
タンク、2は注入管、bは被処理液aが張込まれている
水処理装置の処理槽、cは隣接する曝気槽、3は通気
管、dは調整手段を示す。FIG. 3 is a partially cutaway front view of a chemical injection device of a water treatment apparatus according to the present invention. In the figure, 1 is a chemical tank, 2 is an injection pipe, and b is a liquid to be treated a. A treatment tank of the water treatment apparatus, c is an aeration tank adjacent to the water treatment apparatus, 3 is a ventilation pipe, and d is an adjusting means.
【0013】薬液タンク1は、密閉容器に形成してあ
り、上面側には薬液を注ぎ込むための薬液装入口10が
装設してあるが、装脱自在の開閉蓋11により密封され
るようにしてある。そして、該薬液タンク1は、被処理
物に対する薬液の滴下注入を要する処理槽bの上方に配
位して、適宜の支持部材により支架せしめてある。The chemical liquid tank 1 is formed as a hermetically sealed container, and a chemical liquid inlet 10 for pouring the chemical liquid is provided on the upper surface side, but it is sealed by a detachable opening / closing lid 11. There is. Then, the chemical liquid tank 1 is arranged above the processing tank b that requires the dropping and injection of the chemical liquid into the object to be processed, and is supported by an appropriate supporting member.
【0014】注入管2は、基端側が前記薬液タンク1の
下端部側に接続連通してあり、先端側は処理槽bの上面
側の開放口の上方に臨んでいる。該注入管2の途中に
は、手動により開閉する開閉弁20が接続している。こ
の開閉弁20は、薬液タンク1内に薬液を装填するため
に開閉蓋11を開放したときに、薬液タンク1内に存在
していた薬液が一時に流出するようになるのを防止する
ための開閉弁である。The injection pipe 2 has a base end side connected and communicated with the lower end side of the chemical liquid tank 1, and a front end side thereof faces above an open port on the upper surface side of the processing tank b. An on-off valve 20 that is manually opened and closed is connected to the middle of the injection pipe 2. The on-off valve 20 prevents the chemical solution existing in the chemical solution tank 1 from flowing out at a time when the opening / closing lid 11 is opened to load the chemical solution into the chemical solution tank 1. It is an on-off valve.
【0015】通気管3は、それの基端側が前記薬液タン
ク1に装填される薬液の液面Lより上方の空気層に対し
連通するよう、薬液タンク1の上端部側に接続してあ
る。30は、この通気管3の薬液タンク1から突出する
部位に設けた手動により開閉操作される開閉弁である。
この開閉弁30も、薬液タンク1内に薬液を装填する際
に通気管3を閉じておくためのものである。The vent pipe 3 is connected to the upper end side of the chemical liquid tank 1 so that the base end side thereof communicates with the air layer above the liquid level L of the chemical liquid loaded in the chemical liquid tank 1. Reference numeral 30 denotes an on-off valve which is provided at a portion of the ventilation pipe 3 protruding from the chemical liquid tank 1 and which is manually opened and closed.
This open / close valve 30 is also for closing the vent pipe 3 when the chemical liquid is loaded into the chemical liquid tank 1.
【0016】通気管3に設ける通気量の調整手段dは、
通気管3の外端側に、逆漏斗状に形成した集泡器4を接
続し、その集泡器4を、処理槽bに隣接して設けられる
接触曝気槽等の、曝気用の空気が被処理物中に吹き込ま
れる曝気槽cに導き、その曝気槽c内の被処理液eの中
に下端の開放口40を没入させておき、ブロワー装置5
と通ずる送気パイプ50により圧送されて、それの先端
に接続する散気管51を介して曝気槽c内の被処理液e
中に吹き込まれ、その被処理液e中を旋回流動している
曝気用の空気の気泡52…の一部を捕集して通気管3に
送るようにすることで、この集泡器4による気泡52…
の捕集量で、通気管3の通気量を調整するように構成し
てある。The ventilation amount adjusting means d provided in the ventilation pipe 3 is
An aeration funnel-shaped foam collector 4 is connected to the outer end side of the ventilation pipe 3, and the aeration air, such as a contact aeration tank provided adjacent to the treatment tank b, is connected to the foam collector 4. The blower device 5 is introduced to the aeration tank c blown into the object to be treated, and the lower end opening 40 is immersed in the liquid e to be treated in the aeration tank c.
The liquid to be treated e in the aeration tank c, which is pressure-fed by the air-feeding pipe 50 communicating with
By collecting a part of air bubbles 52 for aeration that are blown into the liquid e to be swirled in the liquid e to be treated and sent to the ventilation pipe 3, Bubble 52 ...
The ventilation amount of the ventilation pipe 3 is adjusted by adjusting the collection amount.
【0017】この実施例装置は、薬液タンク1内に薬液
を装填して開閉蓋11で薬液装入口10を封栓し、注入
管2に設けた開閉弁20と通気管3に設けた開閉弁30
とを開弁しておけば、集泡器4での気泡の捕集がなけれ
ば、薬液タンク1内から通気管3を経て集泡器4に至る
間が密閉された状態となることで、注入管2の開放口か
らの薬液の流出が停止した状態に保持される。In the apparatus of this embodiment, a chemical solution is loaded into the chemical solution tank 1, the chemical solution inlet 10 is sealed with an opening / closing lid 11, and an open / close valve 20 provided in the injection pipe 2 and an open / close valve provided in the ventilation pipe 3 are provided. Thirty
If and are opened, if there is no collection of air bubbles in the foam collector 4, the inside of the chemical solution tank 1 via the ventilation pipe 3 to the foam collector 4 will be in a sealed state, The outflow of the drug solution from the opening of the injection pipe 2 is maintained in a stopped state.
【0018】そして、ブロワー装置5に接続する送気パ
イプ50により圧送されて、散気管51から曝気槽c内
の被処理液e中に吹き出されてくる曝気用の空気の気泡
52…が、この集泡器4の下端の開放口40から内部に
入り込むと、その気泡の分だけ通気管3から薬液タンク
1内に気体が流入し、その分だけ注入管2から薬液が滴
下していくようになる。The air bubbles 52 for aeration that are pressure-fed by the air feed pipe 50 connected to the blower device 5 and are blown out from the air diffuser 51 into the liquid e to be treated in the aeration tank c are ... When entering into the inside from the opening 40 at the lower end of the bubble collector 4, the gas flows into the liquid medicine tank 1 from the ventilation pipe 3 by the amount of the bubbles, and the liquid medicine drips from the injection pipe 2 correspondingly. Become.
【0019】従って、集泡器4の形状、大きさ、および
配設位置を変更して、曝気用空気の気泡52…の捕集量
を調整することで、注入管2からの薬液の滴下量が調整
されるようになる。Therefore, by changing the shape, size, and location of the bubble collector 4 to adjust the amount of trapped air bubbles 52 of the aeration air, the amount of the chemical liquid dropped from the injection pipe 2 can be adjusted. Will be adjusted.
【0020】[0020]
【発明の効果】以上説明したように、本発明手段は、水
処理装置の処理槽b内の被処理液aに対して、薬液タン
ク1に接続した注入管2から滴下する薬液の滴下量を制
御するのに、処理槽bに隣接する曝気槽c内の被処理液
eに送給される曝気用の空気の泡の流れの一部を、集泡
器4で捕集して、これを通気管3を介して薬液タンク1
の上部に送り込むようにしておいて、この集泡器で収集
する気泡量の制御により注入管2からの薬液の滴下量を
制御するようにしているのだから、集泡器4の形状・大
きさ・および配設位置を所望に変更して、曝気用空気の
気泡52…の捕集量を調整することで、注入管2からの
薬液の滴下量が所望に制御されるようになる。As described above, according to the means of the present invention, the amount of the chemical liquid dropped from the injection pipe 2 connected to the chemical liquid tank 1 to the liquid a to be treated in the treatment tank b of the water treatment device is adjusted. In order to control, a part of the flow of the bubbles of the air for aeration sent to the liquid e to be treated in the aeration tank c adjacent to the treatment tank b is collected by the bubble collector 4, and this is collected. Chemical tank 1 via aeration pipe 3
The shape and size of the foam collector 4 are controlled by controlling the amount of bubbles collected by this foam collector so as to control the amount of the drug solution dripped from the injection pipe 2. By adjusting the arrangement position and changing the arrangement position as desired to adjust the amount of trapped air bubbles 52 of the aeration air, the amount of the chemical liquid dropped from the injection pipe 2 can be controlled as desired.
【0021】従って、薬液タンク1の上部に接続した通
気管3の通気量を制御して、注入管2からの薬液の滴下
量を制御するのが、電気を用いず、しかも、メンテナン
スが容易な、著しく簡略な機構で得られるようになる。Therefore, the ventilation amount of the ventilation pipe 3 connected to the upper portion of the chemical liquid tank 1 is controlled to control the dripping amount of the chemical liquid from the injection pipe 2, without using electricity, and the maintenance is easy. , Can be obtained with a remarkably simple mechanism.
【図1】従前手段の一部破断した正面図である。FIG. 1 is a partially cutaway front view of conventional means.
【図2】別の従前手段の一部破断した正面図である。FIG. 2 is a partially cutaway front view of another conventional means.
【図3】本発明による水処理装置の薬液注入装置の一部
破断した正面図である。FIG. 3 is a partially cutaway front view of the chemical liquid injector of the water treatment device according to the present invention.
【図4】別の例の一部破断した正面図である。FIG. 4 is a partially cutaway front view of another example.
【図5】さらに別の例の一部破断した正面図である。FIG. 5 is a partially cutaway front view of still another example.
a…被処理液、b…処理槽、c…曝気槽、d…調整手
段、e…被処理液、V…バルブ、P…ポンプ、L…液
面、1…薬液タンク、10…薬液装入口、11…開閉
蓋、2…注入管、20…開閉弁、3…通気管、30…開
閉弁、4…集泡器、40…開放口、5…ブロワー装置、
50…送気パイプ、51…散気管、52…気泡、6…オ
リフィス。a ... liquid to be treated, b ... treatment tank, c ... aeration tank, d ... adjusting means, e ... liquid to be treated, V ... valve, P ... pump, L ... liquid level, 1 ... chemical liquid tank, 10 ... chemical liquid inlet , 11 ... open / close lid, 2 ... injection pipe, 20 ... open / close valve, 3 ... vent pipe, 30 ... open / close valve, 4 ... foam collector, 40 ... open port, 5 ... blower device,
50 ... Air supply pipe, 51 ... Air diffuser, 52 ... Bubbles, 6 ... Orifice.
Claims (1)
気槽等の処理槽bの上部開放口の上方に、塩素剤・消泡
剤・PH調整剤・微生物・栄養剤等の薬液を滴下する注
入管2を配設し、その注入管2の基端側を、薬液装入口
10が開閉蓋11により密封される密閉容器よりなる薬
液タンク1の底部に接続連通し、その薬液タンク1をそ
れの底部が前記注入管2の先端開口より高く位置するよ
う支架し、該薬液タンク1の上端部側に、外部から気体
を該薬液タンク1内に流入させる通気管3を接続し、そ
の通気管3の外端側に逆漏斗状の集泡器4を接続し、そ
の集泡器4を、処理槽bに隣接する曝気槽c内の被処理
液eに吹き込まれて旋回流動する曝気用の空気の泡の一
部を捕集するようその被処理液eに対し挿入し、その集
泡器4が収集する気泡量により通気管3の通気量を制御
し注入管2からの薬液の滴下量を制御するようにした水
処理装置における薬液の注入装置。1. A chemical liquid such as a chlorine agent, an antifoaming agent, a pH adjusting agent, a microbe, a nutrient, etc. above the upper opening of a treatment tank b such as a sewage tank, a pH adjusting tank, and an aeration tank of a water treatment device. An injection pipe 2 for dripping is provided, and the base end side of the injection pipe 2 is connected and communicated with the bottom of the chemical liquid tank 1 which is a closed container in which the chemical liquid inlet 10 is sealed by an opening / closing lid 11. 1 is supported so that its bottom portion is positioned higher than the tip opening of the injection pipe 2, and a ventilation pipe 3 is connected to the upper end portion side of the chemical liquid tank 1 for allowing gas to flow into the chemical liquid tank 1 from the outside. An inverted funnel-shaped foam collector 4 is connected to the outer end side of the ventilation pipe 3, and the foam collector 4 is swirled and flown by being blown into the liquid e to be treated e in the aeration tank c adjacent to the treatment tank b. The air collected by the bubble collector 4 is inserted into the liquid e to be treated so as to collect a part of the bubbles of the aeration air. A chemical injection device in a water treatment device in which the ventilation amount of the ventilation pipe 3 is controlled by the amount of bubbles to control the dropping amount of the chemical liquid from the injection pipe 2.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3269967A JP2511755B2 (en) | 1991-09-20 | 1991-09-20 | Liquid chemical injection device for water treatment equipment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3269967A JP2511755B2 (en) | 1991-09-20 | 1991-09-20 | Liquid chemical injection device for water treatment equipment |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0576855A JPH0576855A (en) | 1993-03-30 |
JP2511755B2 true JP2511755B2 (en) | 1996-07-03 |
Family
ID=17479722
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3269967A Expired - Fee Related JP2511755B2 (en) | 1991-09-20 | 1991-09-20 | Liquid chemical injection device for water treatment equipment |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2511755B2 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004305813A (en) * | 2003-04-02 | 2004-11-04 | Meiwa Kosan Kk | Disinfectant injection device |
ES2378265T3 (en) * | 2007-03-21 | 2012-04-10 | Diversey, Inc. | Fluid dispensing apparatus |
-
1991
- 1991-09-20 JP JP3269967A patent/JP2511755B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH0576855A (en) | 1993-03-30 |
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