JPH0713839Y2 - Aeration device - Google Patents
Aeration deviceInfo
- Publication number
- JPH0713839Y2 JPH0713839Y2 JP1991056309U JP5630991U JPH0713839Y2 JP H0713839 Y2 JPH0713839 Y2 JP H0713839Y2 JP 1991056309 U JP1991056309 U JP 1991056309U JP 5630991 U JP5630991 U JP 5630991U JP H0713839 Y2 JPH0713839 Y2 JP H0713839Y2
- Authority
- JP
- Japan
- Prior art keywords
- rotating body
- tank
- air
- rotating shaft
- supported
- 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
-
- 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
Landscapes
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本考案は液面上の浮体に支持され
た曝気装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an aeration device supported by a floating body above a liquid surface.
【０００２】[0002]
【従来の技術】従来例としては処理される液体を溜めた
槽或は池等の底に沈めて用いる水中曝気装置と液面上の
浮体にて支持して水中へ曝気手段を吊り下げて用いるも
の或は槽外の圧力空気源から槽中へ送気するものがあ
る。液槽底部に沈めて用いる曝気装置としては水中ポン
プの吐出口にエゼクタ、ディフューザを連設し、エゼク
タへの空気導入管の入口を液面上に出すものがある。こ
のような水中ポンプは水中の異物を吸込んでもロックし
ないように羽根車前面を開放したいわゆるボルテックス
ポンプが用いられることが多い。槽外に置いた圧縮空気
源から空気を水中へ送り込んで曝気を送り込むものは槽
底及び液面下の曝気装置として用いられる。浮体に吊り
下げて用いられるものもポンプとエゼクタ、ディフュー
ザを併用したものである。2. Description of the Related Art As a conventional example, a submerged aerator used by submerging the liquid to be treated in the bottom of a tank or a pond, and a floater above the liquid surface are used to suspend the aerator in water. Some of them supply air into the tank from a pressurized air source outside the tank. As an aeration device that is used by being submerged in the bottom of the liquid tank, there is a device in which an ejector and a diffuser are connected in series to the discharge port of a submersible pump and the inlet of an air introduction pipe to the ejector is exposed above the liquid surface. As such a submersible pump, a so-called vortex pump having an open front surface of an impeller is often used so as not to lock even if foreign matter in the water is sucked. A device that sends aeration by injecting air into water from a compressed air source placed outside the tank is used as an aeration device at the bottom of the tank and below the liquid surface. The one used by suspending it on a floating body is a combination of a pump, an ejector, and a diffuser.
【０００３】[0003]
【考案が解決しようとする課題】槽底、槽上層部の水中
において水中ポンプにエゼクタ、ディフューザを連設し
た曝気装置は水中ポンプの液流により槽内の液体を強く
撹拌する作用があり、曝気に伴なう強い撹拌作用がある
ため、池で底に有機物の汚泥が堆積しているような所で
用いると、汚泥が舞い上り、池中が泥水化してしまい曝
気はされるものの観賞用の池等には用いられない。そし
て水中ポンプはその設置環境上、羽根車がロックして停
止することがあり、又汚水の浸入を防止する水密手段
（メカニカルシール等）を完全としなければならないの
で、安価に作ることは容易でない。又、槽外より、槽中
へ圧縮空気を送り込む曝気装置では槽外に置かれた圧縮
空気源としてのエアコンプレッサ、ブロワが騒音源とな
る。又、小型ガラス水槽用に用いられるダイヤフラムポ
ンプは小型に多用されるが振動音が耳につく。圧縮空気
を槽内に送り込む曝気装置は気泡を効率よく槽内へ送る
ことができるが圧送された空気は液中へ出る際に膨張す
るため、水中の気泡が大きく、曝気効果を低下させる。The aeration device in which the ejector and the diffuser are connected to the submersible pump in the water at the bottom of the tank and the upper layer of the tank has the action of strongly stirring the liquid in the tank by the liquid flow of the submersible pump. Because of the strong agitation that accompanies this, if it is used in a place where organic sludge is accumulated at the bottom of the pond, the sludge will float up and the pond will become muddy water, which will be aerated, but for ornamental use. Not used for ponds. Due to the installation environment of the submersible pump, the impeller may lock and stop, and the watertight means (mechanical seal, etc.) to prevent the infiltration of sewage must be perfect, so it is not easy to make at low cost. . Further, in an aerator that sends compressed air into the tank from the outside of the tank, an air compressor and a blower as a compressed air source placed outside the tank become noise sources. Further, the diaphragm pump used for a small glass water tank is often used in a small size, but a vibration sound is audible. An aerator that sends compressed air into the tank can efficiently send air bubbles into the tank, but the air that has been sent under pressure expands when it goes out into the liquid, so air bubbles in the water are large and the aeration effect is reduced.
【０００４】本考案は運転音が静かで槽底の堆積物を舞
い上らせることなく、曝気効果が良好であり、安価に製
作出来る曝気装置を提供することを目的とする。It is an object of the present invention to provide an aeration device which is quiet in operation, does not raise deposits on the bottom of the tank, has a good aeration effect, and can be manufactured at low cost.
【０００５】[0005]
【課題を解決するための手段】本考案は浮体に支持され
た駆動源に連結され、垂下し、軸受支持され大気と回転
体中を連通する中空の回転軸を有し該回転軸下部に回転
体を支持されたものにおいて、前記回転体は最外周に多
数の細孔を設けた周壁と周壁の軸方向両側を覆う端板を
設けた籠状であることを特徴とする曝気装置である。SUMMARY OF THE INVENTION The present invention is connected to a drive source supported by a floating body, droops, and is supported by a bearing to rotate with the atmosphere.
In those throughout the body is supporting the rotating member to the lower the rotating shaft has a hollow rotary shaft in communication, the rotating body end cover axially opposite sides of the peripheral wall and a peripheral wall provided with a large number of pores in the outermost periphery a aerator, characterized in that Ru cage der provided with a plate.
【０００６】[0006]
【０００７】[0007]
【実施例】以下、本考案の実施例を図面に従って説明す
る。図１は縦断面図を示す。液面Ｌ上に浮上する浮体例
えば浮子１は断面中空で円環状であり、内部に発泡スチ
ロール等の浮力のある部材を設けてある。浮子１上には
取付板２がわたされ浮子１に固定されている。取付板２
上にはフランジ付のモータ３が固定され、モータ３のモ
ータ軸３ａは取付板２の下方へ突出している。モータ３
と取付板２を介して対向するブラケット４は中空密閉構
造であり、取付板２に固定されている。ブラケット４に
その下端が開口する空気導入管５の上端は防音と防滴を
兼ねたマフラー６を介して大気中へ開口している。モー
タ軸３ａと垂直な回転軸７は同心であり、軸継手８によ
り連結されている。ブラケット４の下端には軸受筒９が
固定されている。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a vertical sectional view. A floating body that floats above the liquid surface L, for example, a float 1, has a hollow cross section and has an annular shape, and a buoyant member such as expanded polystyrene is provided inside. A mounting plate 2 is passed over the float 1 and fixed to the float 1. Mounting plate 2
A motor 3 with a flange is fixed on the upper side, and a motor shaft 3a of the motor 3 projects below the mounting plate 2. Motor 3
The bracket 4, which is opposed to the bracket 4 via the mounting plate 2, has a hollow hermetic structure and is fixed to the mounting plate 2. The upper end of the air introduction pipe 5 whose lower end is open to the bracket 4 is open to the atmosphere through a muffler 6 which is both soundproof and dripproof. A rotary shaft 7 perpendicular to the motor shaft 3a is concentric and is connected by a shaft joint 8. A bearing tube 9 is fixed to the lower end of the bracket 4.
【０００８】図２は軸受筒９の上下部を示す。回転軸７
は段部７ａでもって縮径され、縮径部７ｂに該段部７ａ
に当るように上部軸受１１が嵌合し、縮径部７ｂにねじ
込まれたナット１２を締め込むことにより上部軸受１１
が回転軸７に固定されている。上部軸受１１は軸受筒９
の上端の拡径部９ａに嵌入し、該拡径部９ａにねじ込ま
れたナット１３により固定されている。この図２の構成
により、回転軸７は軸方向移動せず回転自在に軸受筒９
に支持されている。軸受筒９の下端に嵌入する下部軸受
１４は回転軸７に圧入固定されており、軸受筒９下端に
圧入されたオイルシール１５は回転軸７を軸封してい
る。FIG. 2 shows the upper and lower parts of the bearing sleeve 9. Rotating shaft 7
Is reduced in diameter by the stepped portion 7a, and the reduced diameter portion 7b is provided with the stepped portion 7a.
The upper bearing 11 is fitted so as to hit the upper bearing 11 and the nut 12 screwed into the reduced diameter portion 7b is tightened to thereby
Is fixed to the rotary shaft 7. The upper bearing 11 is a bearing tube 9
It is fitted into the enlarged diameter portion 9a at the upper end of and is fixed by the nut 13 screwed into the enlarged diameter portion 9a. With the structure shown in FIG. 2, the rotating shaft 7 is rotatably supported without moving in the axial direction.
Supported by. The lower bearing 14 fitted in the lower end of the bearing cylinder 9 is press-fitted and fixed to the rotary shaft 7, and the oil seal 15 press-fitted in the lower end of the bearing cylinder 9 seals the rotary shaft 7.
【０００９】図３に示すように回転軸７の下端には回転
体１６が固定されている。該回転体１６は周壁１６ａが
多孔板で出来た円筒状であり、上端板１６ｂ、下端板１
６ｃを備える。上端板１６ｂの中心孔は回転軸７に嵌入
し、下端板１６ｃ中心部は回転軸７の下端面に接してい
る。回転軸７の下端面の外周近くに植設したピン１７は
下端板１６ｃに嵌入している。下端板１６ｃの中心部に
座金１８を当て座金１８、下端板１６ｃを挿通してボル
ト１９が回転軸７にねじ込まれている。回転体１６は直
径が７０ミリメートルから１５０ミリメートルであり、
周壁１６ａの多孔板の細孔は直径３〜５ミリメートルで
ある。As shown in FIG. 3, a rotary body 16 is fixed to the lower end of the rotary shaft 7. The rotating body 16 has a cylindrical shape with a peripheral wall 16a made of a perforated plate, and has an upper end plate 16b and a lower end plate 1
6c. The center hole of the upper end plate 16b is fitted into the rotating shaft 7, and the central portion of the lower end plate 16c is in contact with the lower end surface of the rotating shaft 7. The pin 17 that is planted near the outer periphery of the lower end surface of the rotating shaft 7 is fitted into the lower end plate 16c. A washer 18 is applied to the center of the lower end plate 16c, the washer 18 and the lower end plate 16c are inserted, and a bolt 19 is screwed into the rotary shaft 7. The rotating body 16 has a diameter of 70 mm to 150 mm,
The pores of the perforated plate of the peripheral wall 16a have a diameter of 3 to 5 mm.
【００１０】図１に示すように軸受筒９の下端に取付け
た回転体保護枠２１の下面には円板の底部撹拌防止板２
２が固定してある。保護枠２１は周囲を等配した位置に
設けた柱状の部材２１ａで上下の端板２１ｂ，２１ｃを
連結してある。As shown in FIG. 1, a bottom stirring prevention plate 2 of a circular plate is provided on the lower surface of the rotor protection frame 21 attached to the lower end of the bearing cylinder 9.
2 is fixed. The protective frame 21 is formed by connecting columnar members 21a, which are arranged at equal intervals, to the upper and lower end plates 21b and 21c.
【００１１】中空の回転軸７の中心には空気導入通路２
３が通じており、該通路２３は上端部で半径方向の孔２
３ａでもってブラケット４内に連通し、下端部で半径方
向の孔２３ｂでもって回転体１６内に連通している。An air introduction passage 2 is provided at the center of the hollow rotating shaft 7.
3 through which the passage 23 has a radial hole 2 at the upper end.
3a communicates with the inside of the bracket 4, and the lower end communicates with the inside of the rotary body 16 through a radial hole 23b.
【００１２】次に作用を説明する。モータ３を付勢する
とモータ軸３ａが回転し、軸継手８を介して回転軸７が
回転し、回転体１６が回転する。回転体１６の回転によ
り、回転体１６の中心部は負圧となり、マフラー６、空
気導入管５、ブラケット４内部、半径方向の孔２３ａ、
空気導入通路２３、半径方向の孔２３ｂをとおり、回転
体１６中へ出る。ここで回転体１６中で気液混合され乍
ら遠心力で周壁１６ａに向った吸込空気は、周壁１６ａ
の多孔板の細孔を通じて液中へ拡散する。この気泡は放
射状渦流で周囲に向い上下方向へ拡大しようとするが下
方は撹拌防止板２２を備えているため下方へ向う気泡は
殆どない。Next, the operation will be described. When the motor 3 is energized, the motor shaft 3a rotates, the rotating shaft 7 rotates via the shaft coupling 8, and the rotating body 16 rotates. Due to the rotation of the rotating body 16, the central portion of the rotating body 16 becomes a negative pressure, and the muffler 6, the air introduction pipe 5, the inside of the bracket 4, the radial hole 23a,
It passes through the air introduction passage 23 and the radial hole 23b and exits into the rotating body 16. Here, the suction air, which has been mixed in the rotating body 16 with gas and liquid toward the peripheral wall 16a by centrifugal force, is
Diffuses into the liquid through the pores of the perforated plate. These bubbles tend to expand toward the surroundings in the vertical direction by a radial vortex flow, but there are almost no bubbles pointing downward due to the stirring prevention plate 22 provided below.
【００１３】このような回転体を用いたため、液を撹拌
することが少なく静かに回転し、回転体の駆動源もモー
タであるから運転音はモータ音のみである。Since such a rotating body is used, the liquid is not agitated and rotates quietly, and since the drive source of the rotating body is also a motor, the operation sound is only the motor sound.
【００１４】実施例は回転体中へ空気を導入する通路を
回転軸を中空として、回転軸を空気通路としたが、空気
を回転体へ導入する手段は別途ホースで回転体中心部へ
導き、ホースと回転体を回転継手で結合するようにする
こともできる。In the embodiment, the passage for introducing air into the rotating body has a hollow rotating shaft and the rotating shaft is an air passage. However, a means for introducing air into the rotating body is separately led to the center of the rotating body by a hose. It is also possible to connect the hose and the rotating body with a rotary joint.
【００１５】実施例は浮子１と撹拌防止板２２をほぼ同
径としてあるため、図示の姿勢で撹拌防止板２２を地上
に置いてもよいし、回転軸７を水平にして地上を転動さ
せることも可能であり、可搬性にすぐれ、一定位置で整
備するのが便利である。In the embodiment, since the float 1 and the agitation prevention plate 22 have substantially the same diameter, the agitation prevention plate 22 may be placed on the ground in the posture shown in the drawing, or the rotary shaft 7 may be horizontal to roll on the ground. It is also possible that it is portable and convenient to maintain in a fixed position.
【００１６】[0016]
【考案の効果】（１）本考案は外周に多数の細孔を設け
た籠状の回転体を水中で回転し、回転体中心部と大気を
連通するようにしたから、回転体による液体の攪拌が少
なく、空気のみを曝気できる効果がある。（２）回転体
は静かに回転し、運転音は駆動源、例えばモータの音の
みである。（３）回転体は籠状であり、ポンプのように
羽根車、ケーシング、格別な軸封、水封手段を必要とし
ないので製作容易で安価である。（４）回転体は液体に
対するポンプ作用が小さく、吸込む曝気空気圧を大きく
しないで回転体の細孔から吹き出すので気泡が小さく且
つ多数で曝気効果が大きい。 EFFECTS OF THE INVENTION (1) In the present invention, a cage-shaped rotating body having a large number of pores on its outer circumference is rotated in water so that the center of the rotating body communicates with the atmosphere. There is little stirring and there is an effect that only air can be aerated. (2) The rotating body rotates quietly, and the operation sound is only the sound of the drive source, for example, the motor. (3) The rotating body has a cage shape, and unlike the pump, it does not require an impeller, a casing, a special shaft seal, or a water seal means, so that it is easy to manufacture and inexpensive. (4) The rotating body is liquid
The pump action against it is small, and the suctioned aeration air pressure is large
The air bubbles are blown out from the pores of the rotating body without
The aeration effect is large with a large number.
【図面の簡単な説明】[Brief description of drawings]
【図１】本考案の実施例の縦断面図である。FIG. 1 is a vertical sectional view of an embodiment of the present invention.
【図２】図１の軸受部の拡大詳細図である。FIG. 2 is an enlarged detailed view of the bearing portion of FIG.
【図３】図１の回転体部の拡大詳細図である。FIG. 3 is an enlarged detailed view of the rotating body portion of FIG.
１ 浮子 ３ モータ ５ 空気導入管 ７ 回転軸 ９ 軸受筒 ２２ 底部撹拌防止板 ２３ 空気導入通路 DESCRIPTION OF SYMBOLS 1 Float 3 Motor 5 Air introduction pipe 7 Rotating shaft 9 Bearing tube 22 Bottom stirring prevention plate 23 Air introduction passage
Claims (1)
下し、軸受支持され大気と回転体中を連通する中空の回
転軸を有し該回転軸下部に回転体を支持されたものにお
いて、前記回転体は最外周に多数の細孔を設けた周壁と
周壁の軸方向両側を覆う端板を設けた籠状であることを
特徴とする曝気装置。1. A hollow rotating shaft that is connected to a drive source supported by a floating body, hangs down, and is supported by a bearing to communicate the atmosphere with the inside of the rotating body. The rotating body is provided below the rotating shaft. in those supported, the rotary body aeration device, characterized in that Ru cage der provided with end plates covering the axially opposite sides of the peripheral wall and a peripheral wall provided with a large number of pores in the outermost periphery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991056309U JPH0713839Y2 (en) | 1991-06-24 | 1991-06-24 | Aeration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991056309U JPH0713839Y2 (en) | 1991-06-24 | 1991-06-24 | Aeration device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH052800U JPH052800U (en) | 1993-01-19 |
| JPH0713839Y2 true JPH0713839Y2 (en) | 1995-04-05 |
Family
ID=13023549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1991056309U Expired - Fee Related JPH0713839Y2 (en) | 1991-06-24 | 1991-06-24 | Aeration device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0713839Y2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997024291A1 (en) * | 1995-12-28 | 1997-07-10 | Sanki Co., Ltd. | Air charger |
| JP2016137454A (en) * | 2015-01-28 | 2016-08-04 | 日新技研株式会社 | Gas-liquid mixer and manufacturing method of fine bubble mixed liquid |
| JP2022525596A (en) * | 2019-03-14 | 2022-05-18 | モリアー インコーポレイテッド | Immersible nanobubble generation devices and methods |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5729007Y2 (en) * | 1977-03-16 | 1982-06-24 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61234994A (en) * | 1985-04-09 | 1986-10-20 | Nippon Gesuidou Jigyodan | Aeration apparatus |
| JPH0545438Y2 (en) * | 1988-04-11 | 1993-11-19 |
-
1991
- 1991-06-24 JP JP1991056309U patent/JPH0713839Y2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997024291A1 (en) * | 1995-12-28 | 1997-07-10 | Sanki Co., Ltd. | Air charger |
| JP2016137454A (en) * | 2015-01-28 | 2016-08-04 | 日新技研株式会社 | Gas-liquid mixer and manufacturing method of fine bubble mixed liquid |
| JP2022525596A (en) * | 2019-03-14 | 2022-05-18 | モリアー インコーポレイテッド | Immersible nanobubble generation devices and methods |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH052800U (en) | 1993-01-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |