JP2000117081A - Underwater stirring device - Google Patents
Underwater stirring deviceInfo
- Publication number
- JP2000117081A JP2000117081A JP10295066A JP29506698A JP2000117081A JP 2000117081 A JP2000117081 A JP 2000117081A JP 10295066 A JP10295066 A JP 10295066A JP 29506698 A JP29506698 A JP 29506698A JP 2000117081 A JP2000117081 A JP 2000117081A
- Authority
- JP
- Japan
- Prior art keywords
- water tank
- water
- discharge port
- pump blade
- pump
- 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.)
- Granted
Links
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、水中攪拌装置に係
り、特に水処理分野で槽内の微生物菌体の濃度を上げる
ために微生物担体を槽内に添加する深槽式の水槽内の被
処理水を攪拌するのに適した水中攪拌装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a submersible agitator, and more particularly to a submerged stirrer in a deep tank for adding a microbial carrier to the tank to increase the concentration of microbial cells in the tank in the field of water treatment. The present invention relates to an underwater stirring device suitable for stirring treated water.
【０００２】[0002]
【従来の技術】従来、微生物菌体にエアを供給する目的
で水槽内の被処理水中に設置される水中攪拌式曝気装置
は、一つのポンプ羽根を回転させてドラフト管の下側開
口から吸い上げた水を上側開口から吐き出す途中でエア
を曝気し、水中にエアを混合溶解していた。これによ
り、ドラフト管の上側開口から上向流となって吐出され
た水は、ドラフト管の外側を下降流となって下降してド
ラフト管の下側開口から吸い込まれる循環流を形成す
る。従って、エアが溶解された水を水槽内に満遍なく拡
散することができる。2. Description of the Related Art Conventionally, a submersible aeration device installed in water to be treated in a water tank for supplying air to microbial cells has been constructed by rotating one pump blade and sucking it from a lower opening of a draft tube. The air was aerated while discharging the water from the upper opening, and the air was mixed and dissolved in the water. As a result, the water discharged as an upward flow from the upper opening of the draft tube becomes a downward flow outside the draft tube and descends to form a circulating flow sucked from the lower opening of the draft tube. Therefore, the water in which the air is dissolved can be diffused evenly in the water tank.
【０００３】[0003]
【発明が解決しようとする課題】ところで、微生物菌体
の濃度を上げるために微生物を固定化した微生物担体を
水槽内に投入する場合、水槽内を沈降しようとする微生
物担体を浮上させて水槽内における担体濃度を均一に維
持することが重要であり、このことは深槽式の水槽の場
合には特に重要となる。When a microorganism carrier on which microorganisms are immobilized is introduced into a water tank in order to increase the concentration of the microbial cells, the microorganism carrier which is going to settle in the water tank is floated and the water is removed from the water tank. It is important to maintain a uniform carrier concentration in the water tank, which is particularly important in the case of a deep water tank.
【０００４】しかしながら、従来の水中攪拌式曝気装置
の場合は、ドラフト管の外側を流れる被処理水は下向流
となるために、浮上させなくてはならない微生物担体に
対して沈降させる方向の力が作用してしまい、微生物担
体が水槽底部に沈殿してしまうという欠点がある。更
に、沈殿しないようにドラフト管の下側開口から微生物
担体を吸い上げようとすると、ポンプ羽根によりドラフ
ト管内に大きな上向流を発生させなくてはならないの
で、動力費が嵩むという欠点がある。[0004] However, in the case of the conventional underwater stirring type aeration apparatus, since the water to be treated flowing outside the draft pipe flows downward, the force in the direction of sedimentation of the microorganism carrier that must be floated. Has the disadvantage that the microbial carrier precipitates at the bottom of the aquarium. Further, if the microorganism carrier is to be sucked up from the lower opening of the draft tube so as not to settle, a large upward flow must be generated in the draft tube by the pump blade, so that there is a drawback that the power cost is increased.
【０００５】また、水中攪拌式曝気装置の他に微生物担
体を浮上させる攪拌装置を設けることは、装置コストの
点で問題がある。本発明は、このような事情に鑑みてな
されたもので、水槽内を効率的に攪拌することができ、
しかも微生物担体を水槽内に投入した場合でも微生物担
体が水槽底部に沈殿しないようにできる水中攪拌装置を
提供することを目的とする。[0005] In addition to providing a stirring device for floating microbial carriers in addition to the underwater stirring type aeration device, there is a problem in terms of device cost. The present invention has been made in view of such circumstances, and can efficiently stir the inside of the water tank,
Moreover, it is an object of the present invention to provide an underwater stirring device capable of preventing the microorganism carrier from settling at the bottom of the water tank even when the microorganism carrier is put into the water tank.
【０００６】[0006]
【課題を解決するための手段】本発明は前記目的を達成
するために、水槽中に水没配置され、前記水槽中の水を
吸込口からケーシング内に吸い込んで上側吐出口から上
向きに吐出する第１のポンプ羽根と、前記吸い込んだ水
を下側吐出口から下向きに吐出させる第２のポンプ羽根
とを有するポンプ装置と、前記下側吐出口の近傍に該下
側吐出口から下向きに吐出された下向流を取り込む取込
口が形成されると共に、前記水槽の底部近傍に前記下向
流を排出する排出口が形成された筒体と、を備えたこと
を特徴とする。According to the present invention, in order to achieve the above-mentioned object, the present invention is characterized in that a water tank is disposed in a water tank, and the water in the water tank is sucked into a casing from a suction port and discharged upward from an upper discharge port. A pump device having a first pump blade and a second pump blade for discharging the sucked water downward from the lower discharge port; and a pump device which is discharged downward from the lower discharge port near the lower discharge port. And a cylindrical body having a discharge port for discharging the downward flow formed near the bottom of the water tank.
【０００７】本発明によれば、第１のポンプ羽根により
形成する上向流により水槽内の主として上部を攪拌する
一方、第２のポンプ羽根により形成する下向流を筒体内
に導いて水槽底部近傍から排出することにより、筒体の
外側に上向流を形成する。これにより、第２のポンプ羽
根により水槽内の主として下部を攪拌することができ、
しかも、筒体の外側に上向流が形成されるので、水槽内
に微生物担体を投入した場合、微生物担体が水槽の底部
に沈殿しないようにすることができる。According to the present invention, the upper part of the water tank is mainly stirred by the upward flow formed by the first pump blade, while the downward flow formed by the second pump blade is guided into the cylinder to form the bottom part of the water tank. By discharging from the vicinity, an upward flow is formed outside the cylindrical body. Thereby, the lower part in the water tank can be mainly stirred by the second pump blade,
In addition, since an upward flow is formed outside the cylindrical body, when the microorganism carrier is put into the water tank, the microorganism carrier can be prevented from settling at the bottom of the water tank.
【０００８】[0008]
【発明の実施の形態】以下、添付図面に従って本発明に
係る水中攪拌装置の好ましい実施の形態について詳説す
る。図１は、本発明に係る水中攪拌装置１０を水槽１２
内に配設した側面断面図であり、水槽１２内に好気性の
微生物、例えば硝化菌を固定化した微生物担体１４、１
４…を多数添加して水槽１２内の被処理水を処理する場
合で以下に説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of an underwater stirring device according to the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 shows an underwater stirring device 10 according to the present invention
FIG. 2 is a side cross-sectional view disposed in the inside, and a microbial carrier 14, 1 in which aerobic microorganisms, for example, nitrifying bacteria are immobilized in a water tank
A case where the water to be treated in the water tank 12 is treated by adding a large number of the components 4 will be described below.
【０００９】図１に示すように、水中攪拌装置１０は、
主として、水槽１２中に水没配置されたポンプ装置１６
と、ポンプ装置１６の下方近傍に配設された筒体（以下
「ドラフト管１８」という）と、ポンプ装置１６内にエ
アを供給するエアノズル２０とで構成される。ポンプ装
置１６は、上端に上側吐出口２２、下端に下側吐出口２
４を有する縦型円筒状のケーシング２６内に、上下２段
から成るポンプ羽根２８、３０が同一の回転軸３２に設
けられると共に、ケーシング２６の側面で２つのポンプ
羽根２８、３０の略中間位置に吸込口３４が形成され
る。As shown in FIG. 1, an underwater stirring device 10 comprises:
Mainly, a pump device 16 submerged in the water tank 12
And a cylinder (hereinafter, referred to as a “draft pipe 18”) disposed below and near the pump device 16, and an air nozzle 20 that supplies air into the pump device 16. The pump device 16 has an upper discharge port 22 at an upper end and a lower discharge port 2 at a lower end.
The pump blades 28 and 30 having two stages are provided on the same rotary shaft 32 in a vertical cylindrical casing 26 having the upper surface 4 and a substantially intermediate position between the two pump blades 28 and 30 on the side surface of the casing 26. The suction port 34 is formed at the bottom.
【００１０】回転軸３２の上端には、ポンプ羽根２８、
３０を回転するモータ３６が連結され、回転軸３２の上
部側に配設された第１のポンプ羽根２８は、回転した時
に水槽１２中の被処理水を吸込口３４からケーシング２
６内に吸い込んで上側吐出口２２から上向きに吐出する
ように羽根の形状が形成される。一方、回転軸３２の下
部側に配設された第２のポンプ羽根３０は、回転した時
に吸込口３４から吸い込んだ被処理水を下側吐出口２４
から下向きに吐出させるように羽根の形状が形成され
る。At the upper end of the rotating shaft 32, a pump blade 28,
The first pump blade 28, which is connected to a motor 36 for rotating the rotating shaft 30 and disposed above the rotating shaft 32, allows the water to be treated in the water tank 12 to rotate through the suction port 34 when the casing 2 is rotated.
The shape of the blade is formed so as to be sucked into the inside 6 and discharged upward from the upper discharge port 22. On the other hand, the second pump blade 30 disposed on the lower side of the rotary shaft 32 is configured to supply the water to be treated sucked from the suction port 34 when rotated to the lower discharge port 24.
The shape of the blade is formed so as to discharge downward from the blade.
【００１１】また、上側吐出口２２の周縁にはリング状
の鍔部材３８が取り付けられると共に、上側吐出口２２
の上方には上向きに吐出された被処理水を拡散する陣笠
状の拡散板３３が配設される。エアノズル２０は、第１
のポンプ羽根２８と第２のポンプ羽根３０の間に配設さ
れ、ケーシング２６を貫通して図示しないコンプレッサ
に接続される。A ring-shaped flange member 38 is attached to the periphery of the upper discharge port 22.
A diffusion plate 33 in the form of a cap that spreads the water to be treated discharged upward is disposed above the water. The air nozzle 20 has a first
Is disposed between the pump blade 28 and the second pump blade 30, and is connected to a compressor (not shown) through the casing 26.
【００１２】ドラフト管１８は、ポンプ装置１６のケー
シング２６の径よりも太い円筒状に形成され、ケーシン
グ２６の下端吐出口２４がドラフト管１８の上端に開口
する取込口４０からドラフト管１８内にわずかに挿入さ
れるように配置される。ドラフト管１８の下端は水槽１
２の底部近傍に位置すると共に、その下端には取込口４
０から取り込まれた被処理水を排出する排出口４２が形
成される。The draft pipe 18 is formed in a cylindrical shape having a diameter larger than the diameter of the casing 26 of the pump device 16, and the lower discharge port 24 of the casing 26 is opened from the intake port 40 opening at the upper end of the draft pipe 18 to the inside of the draft pipe 18. Is arranged to be inserted slightly. The lower end of the draft tube 18 is the water tank 1
2 is located near the bottom, and at its lower end is an intake 4
A discharge port 42 for discharging the water to be treated taken from 0 is formed.
【００１３】また、水槽１２内の下部には、被処理水を
水槽１２内に供給する原水配管４４が配設されると共
に、水槽１２の上端周縁にはトラフ４６が設けられる。
そして、水槽１２内で被処理水と微生物担体１４とが接
触して処理された処理水が、エアノズル２０から曝気さ
れたエアのエアリフト作用により水槽１２の上縁からト
ラフ４６に越流する。A raw water pipe 44 for supplying water to be treated into the water tank 12 is provided below the water tank 12, and a trough 46 is provided on the upper peripheral edge of the water tank 12.
Then, the treated water that has been treated by the contact of the water to be treated and the microorganism carrier 14 in the water tank 12 flows from the upper edge of the water tank 12 to the trough 46 by the air lift effect of the air aerated from the air nozzle 20.
【００１４】次に、上記の如く構成された水中攪拌装置
の作用について説明する。第１及び第２のポンプ羽根２
８、３０が回転した状態で水槽１２内の被処理水が吸込
口３４からケーシング２６内に吸い込まれると共に、エ
アノズル２０からケーシング２６内にエアが曝気され
る。これにより、被処理水にエアが混合溶解される。エ
アが混合溶解された被処理水の一部は、第１のポンプ羽
根２８により上側吐出口２２から上向きに吐出されると
共に拡散板３３で拡散され、エアノズル２０からの気泡
の上昇力と相まって水槽１２内を上向流として上昇す
る。この第１のポンプ羽根２８による上向流により、水
槽内の主として上部が攪拌される。Next, the operation of the underwater stirrer configured as described above will be described. First and second pump blades 2
The water to be treated in the water tank 12 is sucked into the casing 26 from the suction port 34 while the 8, 8 are rotated, and the air is aerated into the casing 26 from the air nozzle 20. Thereby, air is mixed and dissolved in the water to be treated. Part of the water to be treated in which the air is mixed and dissolved is discharged upward from the upper discharge port 22 by the first pump blade 28 and diffused by the diffusion plate 33, and combined with the rising force of the air bubbles from the air nozzle 20, the water tank. 12 rises as upward flow. Due to the upward flow by the first pump blade 28, mainly the upper part in the water tank is stirred.
【００１５】エアが混合溶解された被処理水の残りは、
第２のポンプ羽根３０により下側吐出口２４から下向き
に吐出される。下向きに吐出された被処理水は、ドラフ
ト管１８の取込口４０からドラフト管１８内に取り込ま
れて下向流となってドラフト管１８内を下降する。この
ドラフト管内の下向流によるエゼクタ効果により、ドラ
フト管１８の取込口４０からドラフト管１８周囲の被処
理水を吸引する。ドラフト管１８内を下降する下向流
は、排出口４２から水槽１２の底部に向かって排出さ
れ、水槽１２の底部に当たって方向転換し、ドラフト管
１８の外側を上昇する上向流を形成する。これにより、
第２のポンプ羽根３０により水槽１２内の主として下部
を攪拌することができる。しかも、ドラフト管１８の外
側に上向流が形成されるので、微生物担体１４が水槽１
２の底部に沈殿しないようにすることができる。The remaining water to be treated, in which the air is mixed and dissolved, is:
The water is discharged downward from the lower discharge port 24 by the second pump blade 30. The to-be-processed water discharged downward is taken into the draft pipe 18 from the intake 40 of the draft pipe 18, and becomes a downward flow and descends in the draft pipe 18. By the ejector effect due to the downward flow in the draft pipe, the water to be treated around the draft pipe 18 is sucked from the intake port 40 of the draft pipe 18. The downward flow descending in the draft pipe 18 is discharged from the outlet 42 toward the bottom of the water tank 12, turns on the bottom of the water tank 12, and forms an upward flow that rises outside the draft pipe 18. This allows
The lower part of the water tank 12 can be mainly stirred by the second pump blade 30. Moreover, since an upward flow is formed outside the draft tube 18, the microorganism carrier 14 is
2 can be prevented from settling at the bottom.
【００１６】また、本発明の水中攪拌装置１０の場合に
は、ドラフト管１８の外側が上向流となるので、従来の
ように、微生物担体１４を沈殿させないために大きな動
力を必要としない。従って、ランニングコストを低減で
きる。尚、本発明の実施の形態では、ポンプ装置１６に
エアノズル２０を設けて被処理水中にエアを混合溶解す
る例で説明したが、被処理水中にエアを混合溶解する必
要のない嫌気槽用の水中攪拌装置としても使用すること
ができる。Further, in the case of the underwater stirring device 10 of the present invention, since the outside of the draft tube 18 flows upward, large power is not required in order to prevent the microbial carrier 14 from sedimentation as in the prior art. Therefore, running costs can be reduced. In the embodiment of the present invention, an example is described in which the pump device 16 is provided with the air nozzle 20 to mix and dissolve air in the water to be treated. However, for an anaerobic tank that does not need to mix and dissolve air in the water to be treated. It can also be used as an underwater stirring device.
【００１７】[0017]
【発明の効果】以上説明したように、本発明の水中攪拌
装置によれば、水槽内を効率的に攪拌することができ、
しかも微生物担体を水槽内に投入した場合でも微生物担
体が水槽底部に沈殿しないようにできる。また、従来の
ように、微生物担体を沈殿させないために大きな動力を
必要としないので、ランニングコストを低減できる。As described above, according to the underwater stirring device of the present invention, the inside of the water tank can be efficiently stirred.
Moreover, even when the microorganism carrier is put into the water tank, the microorganism carrier can be prevented from settling at the bottom of the water tank. Further, unlike the conventional method, a large power is not required to prevent the microbial carrier from precipitating, so that the running cost can be reduced.
【図１】本発明の水中攪拌装置を水槽に配設した側面断
面図FIG. 1 is a side sectional view in which an underwater stirring device of the present invention is disposed in a water tank.
１０…水中攪拌装置 １２…水槽 １４…微生物担体 １６…ポンプ装置 １８…ドラフト管 ２０…エアノズル ２２…ケーシングの上側吐出口 ２４…ケーシングの下側吐出口 ２６…ケーシング ２８…第１のポンプ羽根 ３０…第２のポンプ羽根 ３３…拡散板 ３４…吸込口 ４０…ドラフト管の取込口 ４２…ドラフト管の排出口 ４４…原水配管 DESCRIPTION OF SYMBOLS 10 ... Underwater stirring device 12 ... Water tank 14 ... Microorganism carrier 16 ... Pump device 18 ... Draft tube 20 ... Air nozzle 22 ... Upper discharge port of casing 24 ... Lower discharge port of casing 26 ... Casing 28 ... First pump blade 30 ... Second pump blade 33 ... Diffusion plate 34 ... Suction port 40 ... Draft tube inlet 42 ... Draft tube outlet 44 ... Raw water piping
───────────────────────────────────────────────────── フロントページの続き (72)発明者 諏訪 秀行 東京都千代田区内神田１丁目１番14号 日 立プラント建設株式会社内 Ｆターム(参考） 3H071 AA02 BB03 CC12 CC47 DD74 4B033 NA19 NC04 ND04 NE06 NF06 4B065 AA01X BC01 BC41 CA54 4G036 AC03 4G078 AA02 AB20 BA05 CA06 CA23 DA19 DC06 ────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Hideyuki Suwa 1-1-14 Uchikanda, Chiyoda-ku, Tokyo F-term in Hitachi Plant Construction Co., Ltd. (Reference) 3H071 AA02 BB03 CC12 CC47 DD74 4B033 NA19 NC04 ND04 NE06 NF06 4B065 AA01X BC01 BC41 CA54 4G036 AC03 4G078 AA02 AB20 BA05 CA06 CA23 DA19 DC06
Claims (3)
吸込口からケーシング内に吸い込んで上側吐出口から上
向きに吐出する第１のポンプ羽根と、前記吸い込んだ水
を下側吐出口から下向きに吐出させる第２のポンプ羽根
とを有するポンプ装置と、 前記下側吐出口の近傍に該下側吐出口から下向きに吐出
された下向流を取り込む取込口が形成されると共に、前
記水槽の底部近傍に前記下向流を排出する排出口が形成
された筒体と、 を備えたことを特徴とする水中攪拌装置。A first pump blade disposed submerged in a water tank to suck water in the water tank into a casing from a suction port and discharge upward from an upper discharge port; and a lower discharge port for discharging the sucked water. And a pump device having a second pump blade that discharges downward from, and an intake port that captures a downward flow discharged downward from the lower discharge port is formed near the lower discharge port, A cylindrical body having a discharge port for discharging the downward flow near the bottom of the water tank.
羽根の間に、エアを吹き込むエアノズルが配設されてい
ることを特徴とする請求項１の水中攪拌装置。2. The underwater stirring device according to claim 1, wherein an air nozzle for blowing air is provided between the first pump blade and the second pump blade.
前記上側吐出口から上向きに吐出された上向流を拡散す
る拡散部材が設けられていることを特徴とする請求項１
の水中攪拌装置。3. Above the upper discharge port of the pump device,
2. A diffusion member for diffusing upward flow discharged upward from the upper discharge port is provided.
Underwater stirring device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29506698A JP3629979B2 (en) | 1998-10-16 | 1998-10-16 | Underwater stirrer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29506698A JP3629979B2 (en) | 1998-10-16 | 1998-10-16 | Underwater stirrer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000117081A true JP2000117081A (en) | 2000-04-25 |
| JP3629979B2 JP3629979B2 (en) | 2005-03-16 |
Family
ID=17815883
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29506698A Expired - Fee Related JP3629979B2 (en) | 1998-10-16 | 1998-10-16 | Underwater stirrer |
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| Country | Link |
|---|---|
| JP (1) | JP3629979B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008012475A (en) * | 2006-07-07 | 2008-01-24 | Sumitomo Heavy Industries Environment Co Ltd | Stirring impeller, underwater stirring device, and underwater stirring aerator |
| JP2013536057A (en) * | 2010-06-10 | 2013-09-19 | エスアイジー テクノロジー アーゲー | Product storage apparatus and method |
| CN109372737A (en) * | 2018-10-29 | 2019-02-22 | 国家能源投资集团有限责任公司 | Blockage-clearing device |
| CN113398819A (en) * | 2020-07-13 | 2021-09-17 | 徐红琴 | Concentration partition mixing flow stirring tank |
-
1998
- 1998-10-16 JP JP29506698A patent/JP3629979B2/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008012475A (en) * | 2006-07-07 | 2008-01-24 | Sumitomo Heavy Industries Environment Co Ltd | Stirring impeller, underwater stirring device, and underwater stirring aerator |
| JP4686414B2 (en) * | 2006-07-07 | 2011-05-25 | 住友重機械エンバイロメント株式会社 | Stirring impeller, underwater stirring device and underwater stirring aeration device |
| JP2013536057A (en) * | 2010-06-10 | 2013-09-19 | エスアイジー テクノロジー アーゲー | Product storage apparatus and method |
| CN109372737A (en) * | 2018-10-29 | 2019-02-22 | 国家能源投资集团有限责任公司 | Blockage-clearing device |
| CN113398819A (en) * | 2020-07-13 | 2021-09-17 | 徐红琴 | Concentration partition mixing flow stirring tank |
| CN113398819B (en) * | 2020-07-13 | 2023-06-16 | 新疆国化材料科技有限公司 | Concentration partition mixed flow stirring tank |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3629979B2 (en) | 2005-03-16 |
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