JPH0318953B2 - - Google Patents
Info
- Publication number
- JPH0318953B2 JPH0318953B2 JP62055390A JP5539087A JPH0318953B2 JP H0318953 B2 JPH0318953 B2 JP H0318953B2 JP 62055390 A JP62055390 A JP 62055390A JP 5539087 A JP5539087 A JP 5539087A JP H0318953 B2 JPH0318953 B2 JP H0318953B2
- Authority
- JP
- Japan
- Prior art keywords
- cone
- water
- impeller
- air
- shaped disk
- 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 - Lifetime
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 28
- 238000005273 aeration Methods 0.000 claims description 13
- 239000003638 chemical reducing agent Substances 0.000 claims description 7
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 239000007788 liquid Substances 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 238000004090 dissolution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Description
【発明の詳細な説明】
［産業上の利用分野］
この発明は、水処理設備に用いられる水中曝気
装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to an underwater aeration device used in water treatment equipment.
［従来の技術］
送水用インペラーと散気ロータとを同軸上に設
け、空気（気泡）の破砕と水の循環とを同一駆動
装置で行うようにした水中曝気装置は従来公知で
ある。（一例として特開昭60−7997公報参照）
しかし、この種の曝気装置においては、散気用
ロータの羽根で空気を細かく砕いた後、この気泡
を含んだ水を送水用インペラーで撹拌しながら送
水することとなり、空気量が多くなるほど循環水
量が低下しエネルギーロスが大きい。[Prior Art] Underwater aeration equipment is conventionally known in which a water conveying impeller and an aeration rotor are coaxially disposed, and the same drive device performs the crushing of air (bubbles) and the circulation of water. (For an example, see Japanese Patent Application Laid-Open No. 60-7997.) However, in this type of aeration device, after the air is broken into small pieces by the blades of the aeration rotor, the water containing air bubbles is stirred by the water impeller. Water has to be pumped, and as the amount of air increases, the amount of circulating water decreases, resulting in greater energy loss.
一方、送水用インペラーでは水のみを移送し、
インペラーの出口側においてスリツト状吹出口又
は多孔板より空気を噴出させるようにした水中曝
気装置も公知である。（特開昭59−92093号公報、
特開昭59−16597号公報、特公昭61−37999号公
報、実開昭55−137995号公報、実開61−40196号
公報等参照）
しかし、この種の曝気装置においては、気泡の
破砕が不十分となり微細気泡を得ることが困難で
ある。 On the other hand, water impellers transfer only water;
Submerged aeration devices are also known in which air is blown out from a slit-like outlet or a perforated plate on the outlet side of an impeller. (Unexamined Japanese Patent Publication No. 59-92093,
(See JP-A-59-16597, JP-A-61-37999, JP-A-55-137995, JP-A-61-40196, etc.) However, in this type of aeration device, the destruction of air bubbles is difficult. This makes it difficult to obtain fine bubbles.
［この発明が解決しようとする問題点］
以上のように、従来公知の曝気装置においては
気泡を撹拌して微細化しようとすると循環水量が
低下し、一方、循環水量を低下させることなく空
気を添加しようとすると気泡の破砕が不十分とな
り微細気泡が得られないという問題点があつた。[Problems to be Solved by the Invention] As described above, in conventionally known aeration devices, when trying to agitate bubbles to make them finer, the amount of circulating water decreases. When attempting to add it, there was a problem in that the bubbles were not sufficiently crushed and fine bubbles could not be obtained.
本発明は、上記問題点を解決し、循環水量の低
下を招くことなく、しかも微細気泡が得られる曝
気装置を提供しようとするものである。 The present invention aims to solve the above-mentioned problems and provide an aeration device that can produce fine bubbles without causing a decrease in the amount of circulating water.
［問題点を解決するための手段］
この発明は、前記問題点を解決するための手段
として、水中モータ１により減速機２を介して駆
動される送水インペラー３の下流側に該送水イン
ペラー３と同軸にかつ一体にコーン型デイスク４
を配設し、該コーン型デイスク４の周縁部と周囲
が開放されたケーシング５の周縁部との間に空気
噴出間隙６を設けてなることを特徴とする水中曝
気装置を得たものである。[Means for Solving the Problems] As a means for solving the above-mentioned problems, the present invention provides a water supply impeller 3 and a water supply impeller 3 on the downstream side of the water supply impeller 3 driven by the submersible motor 1 via the reduction gear 2. Cone-shaped disk 4 coaxially and integrally
This submersible aeration device is characterized in that an air jetting gap 6 is provided between the periphery of the cone-shaped disk 4 and the periphery of the casing 5 whose periphery is open. .
［実施例］
図面に示した実施例によりこの発明の構成を説
明する。[Example] The structure of the present invention will be explained with reference to an example shown in the drawings.
第１図は、上向流式とした実施例である。 FIG. 1 shows an example of an upward flow type.
図において、１は水中モータであつて、減速機
２を介して上向送水用インペラー３およびその下
流側のコーン型デイスク４を駆動する。 In the figure, reference numeral 1 denotes a submersible motor, which drives an upward water-feeding impeller 3 and a cone-shaped disk 4 downstream thereof via a speed reducer 2.
コーン型デイスク４と上部ケーシング５との間
には空気噴出間隙６が形成されている。５′は側
面ケーシングである。 An air ejection gap 6 is formed between the cone-shaped disk 4 and the upper casing 5. 5' is a side casing.
７は前記インペラー３のボスであつて、モータ
１、減速機２の出力軸８に取り付けられている。 7 is a boss of the impeller 3, which is attached to the output shaft 8 of the motor 1 and the reduction gear 2.
このボス７には上向き送気用の通気孔９が設け
られており、また、上端外周にはコーン型デイス
ク４が、下端外周にはスカート状ガイド板１０が
夫々取り付けられている。 This boss 7 is provided with a ventilation hole 9 for upward air supply, and a cone-shaped disk 4 is attached to the outer periphery of the upper end, and a skirt-shaped guide plate 10 is attached to the outer periphery of the lower end.
１１は給気管であつて、前記ガイド板１０で囲
まれたボス７下方の空気室１２に開口している。 Reference numeral 11 denotes an air supply pipe, which opens into an air chamber 12 below the boss 7 surrounded by the guide plate 10.
水中モータ１の回転は減速機２によつて所定の
速度に減速されて出力軸８に伝えられ、該出力軸
８に取り付けられたボス７を介してインペラー３
及びその下流側のコーン型デイスク４を回転させ
る。 The rotation of the underwater motor 1 is reduced to a predetermined speed by the reducer 2 and transmitted to the output shaft 8, and is transmitted to the impeller 3 via the boss 7 attached to the output shaft 8.
And the cone-shaped disk 4 on the downstream side thereof is rotated.
水はインペラー３により側面ケーシング５′内
を上向きに揚水され、上部ケーシング５と側面ケ
ーシング５′との間から吐出される。 Water is pumped upward in the side casing 5' by the impeller 3 and is discharged from between the upper casing 5 and the side casing 5'.
空気は給気管１１から前記ボス７下方の空気室
１２に噴き込まれ、ボス７内の通気孔９を経てコ
ーン型デイスク４と上部ケーシング５との間隙６
から吐出される。ここで水と混合され微細気泡と
なつて槽内に送られる。 Air is injected from the air supply pipe 11 into the air chamber 12 below the boss 7, passes through the ventilation hole 9 in the boss 7, and enters the gap 6 between the cone-shaped disk 4 and the upper casing 5.
It is discharged from. Here, it is mixed with water and sent into the tank as fine bubbles.
第２図は、下降流式とした実施例である。 FIG. 2 shows an example of a downflow type.
図において、１は水中モータであつて、減速機
２を介して下向送水用インペラー３およびその下
流側のコーン型デイスク４を駆動する。 In the figure, reference numeral 1 denotes a submersible motor, which drives a downward water-feeding impeller 3 and a cone-shaped disk 4 downstream thereof via a speed reducer 2.
コーン型デイスク４と下部ケーシング５との間
には空気噴出用間隙６が形成されている。５′は
側面ケーシングである。 An air jetting gap 6 is formed between the cone-shaped disk 4 and the lower casing 5. 5' is a side casing.
７は前記インペラー３のボスであつて、モータ
１、減速機２の出力軸８に取り付けられている。 7 is a boss of the impeller 3, which is attached to the output shaft 8 of the motor 1 and the reduction gear 2.
前記コーン型デイスク４はボス７の下端外周に
取り付けられている。 The cone-shaped disk 4 is attached to the outer periphery of the lower end of the boss 7.
１１は給気管であつて、前記ボス７の下方の空
気室１２に開口している。 Reference numeral 11 denotes an air supply pipe, which opens into an air chamber 12 below the boss 7.
水中モータ１の回転は減速機２によつて所定の
速度に減速されて出力軸８に伝えられ、該出力軸
８に取り付けられたボス７を介してインペラー３
及びその下流側のコーン型デイスク４を回転させ
る。 The rotation of the underwater motor 1 is reduced to a predetermined speed by the reducer 2 and transmitted to the output shaft 8, and is transmitted to the impeller 3 via the boss 7 attached to the output shaft 8.
And the cone-shaped disk 4 on the downstream side thereof is rotated.
水はインペラー３により側面ケーシング５′内
を下向きに送水され、下部ケーシング５と側面ケ
ーシング５′との間から吐出される。 Water is sent downward through the side casing 5' by the impeller 3 and is discharged from between the lower casing 5 and the side casing 5'.
空気は給気管１１から前記ボス７下方の空気室
１２に噴き込まれ、コーン型デイスク４と下部ケ
ーシング５との間隙６から吐出される。ここで水
の混合され微細気泡となつて槽内に送られる。 Air is injected from the air supply pipe 11 into the air chamber 12 below the boss 7, and is discharged from the gap 6 between the cone-shaped disk 4 and the lower casing 5. Here, water is mixed and formed into fine bubbles that are sent into the tank.
［作用］
この発明の水中曝気装置によれば、上無流式の
場合も下降流式の場合も、送水インペラー３の下
流側にコーン型デイスク４が配設されており、イ
ンペラー３は常に水のみを移送するものである。
空気はコーン型デイスク４の周縁とケーシング５
との間隙６から吐出させるが、コーン型デイスク
４の遠心力で微細化され、この微細気泡が恰も膜
状の気体となつて液中に分散し、この時非常に高
い溶解効率が得られる。[Function] According to the underwater aeration device of the present invention, the cone-shaped disc 4 is disposed downstream of the water supply impeller 3, regardless of whether it is an upper flow type or a downward flow type, so that the impeller 3 is always filled with water. It is intended to transport only
Air flows around the periphery of the cone-shaped disk 4 and the casing 5
The liquid is discharged from the gap 6 between the liquid and the liquid, but the centrifugal force of the cone-shaped disk 4 atomizes the liquid, and the fine air bubbles become a film-like gas and are dispersed in the liquid, resulting in a very high dissolution efficiency.
コーン型デイスク４の周速は30〜５ｍ／sec程
度に保つと効果的である。モータ１の回転は減速
機２によつて減速されるが、この減速比およびコ
ーン型デイスク４の径を適当に選択することによ
つて前記のような周速とすることができる。 It is effective to maintain the circumferential speed of the cone-shaped disk 4 at about 30 to 5 m/sec. The rotation of the motor 1 is reduced by the reduction gear 2, and by appropriately selecting the reduction ratio and the diameter of the cone-shaped disk 4, the circumferential speed as described above can be achieved.
コーン型デイスク４は回転方向の抵抗が少ない
のでその周速を速くすることができ、微細気泡を
生成させるためにはなるべく高速とすることが好
ましいが、あまり速すぎるとエネルギー消費が多
くなり不経済となる。 Since the cone-shaped disk 4 has little resistance in the rotational direction, its circumferential speed can be increased, and in order to generate fine bubbles, it is preferable to set the speed as high as possible, but if it is too fast, energy consumption will increase and it will be uneconomical. becomes.
［効果］
この発明によれば、水中モータ１により減速機
２を介して駆動される送水インペラー３の下流側
に該送水インペラー３と同軸かつ一体にコーン型
デイスク４を配設し、該コーン型デイスク４の周
縁部と周囲が開放されたケーシング５の周縁部と
の間に空気噴出間隙６を設けてなるものであるか
ら、インペラー３は常に水のみを移送することと
なり曝気風量の増加に伴つて循環水量が低下する
現象を回避することができ、また、空気はコーン
型デイスク４の遠心力で微細化されて水中に供給
され循環水と撹拌混合されるので、静止したスリ
ツト噴出口や多孔板から空気を噴出させるものに
比し酸素の溶解効率を高くすることができる効果
がある。[Effects] According to the present invention, the cone-shaped disk 4 is disposed coaxially and integrally with the water impeller 3 on the downstream side of the water impeller 3 driven by the underwater motor 1 via the reducer 2, and Since the air jet gap 6 is provided between the peripheral edge of the disk 4 and the peripheral edge of the casing 5, which is open around the periphery, the impeller 3 always transfers only water, and as the aeration air volume increases. In addition, since the air is atomized by the centrifugal force of the cone-shaped disk 4, supplied into the water, and mixed with the circulating water, it is possible to avoid the phenomenon that the amount of circulating water decreases. This method has the effect of increasing oxygen dissolution efficiency compared to a method in which air is blown out from a plate.
図面はこの発明の構成を示す実施例の説明図で
あつて、第１図は上向流式、第２図は下降流式の
断面を示す。
１：水中モータ、２：減速機、３：インペラ
ー、４：コーン型デイスク、５：ケーシング、
５′：側面ケーシング、６：空気噴出間隙、７：
インペラー３のボス、８：出力軸、９：通孔、１
０：ガイド板、１１：給気管、１２：空気室。
The drawings are explanatory diagrams of embodiments showing the structure of the present invention, in which FIG. 1 shows a cross section of an upward flow type and FIG. 2 shows a cross section of a downward flow type. 1: Submersible motor, 2: Reducer, 3: Impeller, 4: Cone-shaped disc, 5: Casing,
5': Side casing, 6: Air jet gap, 7:
Boss of impeller 3, 8: Output shaft, 9: Through hole, 1
0: Guide plate, 11: Air supply pipe, 12: Air chamber.
Claims (1)
れる送水インペラー３の下流側に、該送水インペ
ラー３と同軸かつ一体にコーン型デイスク４を配
設し、該コーン型デイスク４の周縁部と周囲が開
放されたケーシング５の周縁部との間に空気噴出
間隙６を設けてなることを特徴とする水中曝気装
置。1 A cone-shaped disk 4 is disposed coaxially and integrally with the water impeller 3 on the downstream side of the water impeller 3 driven by the underwater motor 1 via the reducer 2, and the periphery of the cone-shaped disk 4 and the surrounding area are An underwater aeration device characterized in that an air ejection gap 6 is provided between the casing 5 and the peripheral edge of the open casing 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62055390A JPS63221896A (en) | 1987-03-12 | 1987-03-12 | Underwater aeration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62055390A JPS63221896A (en) | 1987-03-12 | 1987-03-12 | Underwater aeration device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63221896A JPS63221896A (en) | 1988-09-14 |
| JPH0318953B2 true JPH0318953B2 (en) | 1991-03-13 |
Family
ID=12997185
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62055390A Granted JPS63221896A (en) | 1987-03-12 | 1987-03-12 | Underwater aeration device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63221896A (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4503870B2 (en) * | 2001-03-16 | 2010-07-14 | 株式会社鶴見製作所 | Underwater air mixer |
| DE102007037586B3 (en) * | 2007-08-09 | 2008-09-18 | Invent Umwelt- Und Verfahrenstechnik Ag | Stirring device for activated sludge |
| US8434744B2 (en) * | 2007-08-09 | 2013-05-07 | Invent Umwelt-Und Verfahrenstechnik Ag | Stirring device for activated sludges |
| JP4987811B2 (en) * | 2008-07-10 | 2012-07-25 | 株式会社日立プラントテクノロジー | Aeration stirrer |
| WO2010041565A1 (en) * | 2008-10-06 | 2010-04-15 | 国立大学法人筑波大学 | Microbubble generating pump, microbubble generating pump rotor blade and microbubble generating pump stator blade |
| JP5368063B2 (en) * | 2008-11-15 | 2013-12-18 | 株式会社帝国電機製作所 | Oily substance combustion apparatus and oily substance combustion method |
| JP5521534B2 (en) * | 2009-12-22 | 2014-06-18 | 株式会社Ｉｈｉ | Stirrer |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5916597A (en) * | 1982-07-21 | 1984-01-27 | Ebara Corp | Aerator |
| JPS5992093A (en) * | 1982-11-17 | 1984-05-28 | Hanshin Doryoku Kikai Kk | Circulatory aerative purification of sludge and apparatus therefor |
| JPS6140196B2 (en) * | 1981-02-20 | 1986-09-08 | Mitsubishi Pencil Co | |
| JPS62106896A (en) * | 1985-11-01 | 1987-05-18 | Ebara Corp | Aeration apparatus |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6140196U (en) * | 1984-08-21 | 1986-03-13 | 株式会社 西原環境衛生研究所 | Aerator |
| JPH0331382Y2 (en) * | 1987-02-27 | 1991-07-03 |
-
1987
- 1987-03-12 JP JP62055390A patent/JPS63221896A/en active Granted
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6140196B2 (en) * | 1981-02-20 | 1986-09-08 | Mitsubishi Pencil Co | |
| JPS5916597A (en) * | 1982-07-21 | 1984-01-27 | Ebara Corp | Aerator |
| JPS5992093A (en) * | 1982-11-17 | 1984-05-28 | Hanshin Doryoku Kikai Kk | Circulatory aerative purification of sludge and apparatus therefor |
| JPS62106896A (en) * | 1985-11-01 | 1987-05-18 | Ebara Corp | Aeration apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63221896A (en) | 1988-09-14 |
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