JP4073664B2 - Stirrer in sewage treatment tank - Google Patents

Stirrer in sewage treatment tank Download PDF

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Publication number
JP4073664B2
JP4073664B2 JP2001387489A JP2001387489A JP4073664B2 JP 4073664 B2 JP4073664 B2 JP 4073664B2 JP 2001387489 A JP2001387489 A JP 2001387489A JP 2001387489 A JP2001387489 A JP 2001387489A JP 4073664 B2 JP4073664 B2 JP 4073664B2
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JP
Japan
Prior art keywords
discharge port
treatment tank
sewage treatment
discharge
bend
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
Application number
JP2001387489A
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Japanese (ja)
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JP2003181264A (en
Inventor
正彦 福田
猛 荻野
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Tsurumi Manufacturing Co Ltd
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Tsurumi Manufacturing Co Ltd
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Filing date
Publication date
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Priority to JP2001387489A priority Critical patent/JP4073664B2/en
Publication of JP2003181264A publication Critical patent/JP2003181264A/en
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    • 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

【０００１】
【発明の技術分野】
本発明は、汚水処理槽内の攪拌装置に関するものである。
【０００２】
【従来技術とその問題点】
汚水処理を行う反応槽では、攪拌処理工程においてスカムが発生し、水面上に浮上して層を形成する。そしてスカムの層に担体が補足されて攪拌が阻害されるため、汚水の処理効率は低下することになる。
【０００３】
その対策として従来は、図５に例示するようなシャワー式の消泡装置Ｓ１によりスカムを除去し、或いは図６に例示するようフロートで浮設させたポンプＳ２によってスカムを吸い取るなど、攪拌装置の他に専用の機器を別途設置する必要があり、そのための設置スペースを確保しなければならず、また、イニシャルコストおよびランニングコストを押し上げる要因にもなるのである。
【０００４】
【発明の目的】
本発明の目的は、スカム除去用の機器を別途設置することを要せず、攪拌装置自体にスカム堆積防止機能を有しており、担体を効率よく循環させて有効な汚水処理がローコストに行われる、汚水処理槽内の攪拌装置を提供することにある。
【０００５】
【発明の構成】
本発明に係る請求項１記載の汚水処理槽内の攪拌装置では、横型水中モータの回転軸にプロペラを嵌着し該プロペラの外周をガイドリングで囲繞してなる攪拌機を汚水処理槽内における支持体に支承させ、ガイドリングの口周部と回動自在に嵌合し回転軸と直交方向に吐出口を開口させたエルボ状の吐出ベンドを付設し、吐出口が下向き方向となるよう吐出ベンドを回動操作することにより汚水処理槽内攪拌のための下向き水流が発生し、吐出口が上向き方向となるよう吐出ベンドを回動操作することにより水面上のスカム拡散のための上向き水流が発生するよう構成した。また請求項２記載の発明では、請求項１記載の汚水処理槽内の攪拌装置を前提として、吐出口の外側一端に繋留して上導させた牽引具の牽引操作により吐出口が上向き方向となるよう吐出ベンドが回転し、牽引具の牽引を弛める操作により吐出口が下向き方向となるよう吐出ベンドが回動するよう構成した。
【０００６】
【作用】
吐出口が下向き状態の場合に横型水中モータを駆動させると、プロペラの回転により下向き水流が発生して汚水処理槽内を攪拌する、吐出口を上向きに反転させた状態で横型水中モータを駆動させると、プロペラの回転により上向き水流が発生し水面上のスカム拡散作用を生じて担体が循環し易い状態となる。そしてスカムを拡散させたのち再び吐出口を下向き状態に反転させると、プロペラによる下向き水流の発生で汚水処理槽内が攪拌される。このように上向き水流と下向き水流の交互発生により、担体を効率よく循環させて有効な汚水処理が行われることになる。
【０００７】
【実施例】
以下実施例の図１ないし図４により説明をする。
【０００８】
１は汚水処理槽内に立設されたガイドパイプ等の支持体、２は横型水中モータ３の回転軸４にプロペラ５を嵌着し該プロペラ５の外周をガイドリング６で囲繞してなる攪拌機であり、例えば横型水中モータ３の後方に付設された係合子７によりガイドパイプ等の支持体１と係合して支承され、吊下げチェーン８の操作によって昇降自在に構成される。９はガイドリング６の口周部と回動自在に嵌合し回転軸４と直交方向に吐出口１０を開口させたエルボ状の吐出ベンド、１１は吐出口１０の外側一帯に繋留して上導させたチェーンやロッド等の牽引具であり、該牽引具１１の牽引操作により吐出口１０が上向き方向となるよう吐出ベンド９が回転し、また牽引具１１の牽引を弛めれば重力の作用によって吐出口１０が下向き方向となるよう吐出ベンド９が回動する。しかし牽引具１１の操作によることなく、吊下げチェーン８の操作で攪拌機２を一旦水面上へ引き上げ、吐出ベンド９を直接回動させて吐出口１０の向きを変更させることも可能である。
【０００９】
吐出口１０が下向き方向となるよう吐出ベンド９を回動操作した図１および図２の状態において横型水中モータ３を駆動させると、プロペラ５の回転により下向き水流が発生して汚水処理槽内を攪拌する。また、吐出口１０を上向き方向となるよう吐出ベンド９を回動操作した図３および図４の状態では、上向水流が発生し水面上のスカム拡散作用を生じて担体が循環し易い状態となる。そしてスカムを拡散させたのち再び吐出口１０が下向き方向となるよう吐出ベンド９を回動操作した図１および図２の状態とすれば、下向き水流の発生により汚水処理槽内が攪拌される。このように上向き水流と下向き水流の交互発生により、担体を効率よく循環させて有効な汚水処理が行われるのであるが、前述の牽引具１１による吐出ベンド９の回動操作は、水面上の状態を視認することにより手動操作で行ってもよく、或いは自動操作により間欠的に行わせてもよい。
【００１０】
【発明の効果】
本発明汚水処理槽内の攪拌装置によれば、攪拌装置自体にスカム堆積防止機能を有しており、担体を効率よく循環させて有効な汚水処理が行われるため、従来のようなスカム除去用の機器を別途設置する必要がなく、イニシャルコストおよびランニングコストを著しく低減させ得るという利点がある。
【図面の簡単な説明】
【図１】 本発明に係る汚水処理槽内の攪拌装置の操作態様を例示した説明図であって、吐出口を下向き方向となるよう吐出ベンドを回動させた状態を示す。
【図２】 図１のＡ−Ａ線における縦断側面図である。
【図３】 本発明に係る汚水処理槽内の攪拌装置の設置態様を例示した説明図であって、吐出口が上向き方向となるよう吐出ベンドを回動させた状態を示す。
【図４】 図３のＢ−Ｂ線における縦断側面図である。
【図５】 従来における汚水処理槽内の攪拌装置の設置態様を例示した説明図であって、シャワー式の消泡装置を併設させた事例を示す。
【図６】 従来における汚水処理槽内の攪拌装置の設置態様を例示した説明図であって、浮設式ポンプによるスカム吸引装置を併設させた事例を示す。
【符号の説明】
１ 支持体
２ 攪拌機
３ 横型水中モータ
４ 回転軸
５ プロペラ
６ ガイドリング
９ 吐出ベンド
１０ 吐出口
１１ 牽引具[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a stirring device in a sewage treatment tank.
[0002]
[Prior art and its problems]
In a reaction tank that performs sewage treatment, scum is generated in the stirring treatment step, and floats on the water surface to form a layer. And since a support | carrier is supplemented by the layer of a scum and stirring is inhibited, the processing efficiency of sewage falls.
[0003]
Conventionally, as a countermeasure, a scum is removed by a shower-type defoaming device S1 as illustrated in FIG. 5, or a scum is sucked up by a pump S2 floated as illustrated in FIG. In addition, it is necessary to separately install a dedicated device, and it is necessary to secure an installation space for that purpose, and it becomes a factor that increases initial cost and running cost.
[0004]
OBJECT OF THE INVENTION
The object of the present invention is that it is not necessary to separately install a scum removing device, and the stirrer itself has a function of preventing scum accumulation, so that efficient sewage treatment can be performed at low cost by circulating the carrier efficiently. An object of the present invention is to provide a stirring device in a sewage treatment tank.
[0005]
[Structure of the invention]
The stirrer in the sewage treatment tank according to claim 1 according to the present invention supports a stirrer in which a propeller is fitted to the rotating shaft of a horizontal submersible motor and the outer periphery of the propeller is surrounded by a guide ring in the sewage treatment tank. An elbow-shaped discharge bend that is supported on the body and is pivotably fitted to the periphery of the guide ring and is open in the direction orthogonal to the rotation axis is attached so that the discharge port is in the downward direction. Rotating operation generates a downward water flow for stirring in the sewage treatment tank, and rotating the discharge bend so that the discharge port faces upward generates an upward water flow for scum diffusion on the water surface. Configured to do. Moreover, in invention of Claim 2, on the premise of the stirring apparatus in the sewage treatment tank of Claim 1, a discharge port is made into an upward direction by the pulling operation of the traction tool tethered and led to the outer end of a discharge port. The discharge bend is configured to rotate so that the discharge port is directed downward by the operation of loosening the traction of the traction tool.
[0006]
[Action]
When the horizontal submersible motor is driven when the discharge port is in the downward state, a downward water flow is generated by the rotation of the propeller to stir the sewage treatment tank, and the horizontal submersible motor is driven with the discharge port turned upside down. Then, an upward water flow is generated by the rotation of the propeller, causing a scum diffusion action on the water surface, and the carrier is easily circulated. Then, after the scum is diffused and the discharge port is reversed again in the downward direction, the inside of the sewage treatment tank is agitated by the generation of the downward water flow by the propeller. Thus, by alternately generating the upward water flow and the downward water flow, the carrier is efficiently circulated and an effective sewage treatment is performed.
[0007]
【Example】
The embodiment will be described below with reference to FIGS.
[0008]
1 is a support body such as a guide pipe standing upright in a sewage treatment tank, and 2 is a stirrer in which a propeller 5 is fitted on a rotating shaft 4 of a horizontal submersible motor 3 and an outer periphery of the propeller 5 is surrounded by a guide ring 6. For example, it is supported by engaging with a support 1 such as a guide pipe by an engaging member 7 attached to the rear side of the horizontal submersible motor 3, and is configured to be raised and lowered by operation of the suspension chain 8. Reference numeral 9 denotes an elbow-shaped discharge bend which is rotatably fitted to the peripheral portion of the guide ring 6 and opens the discharge port 10 in a direction orthogonal to the rotation shaft 4. It is a towing tool such as a chain or a rod that is guided, and the pulling operation of the towing tool 11 rotates the discharge bend 9 so that the discharge port 10 is directed upward. The discharge bend 9 is rotated by the action so that the discharge port 10 is directed downward. However, it is also possible to change the direction of the discharge port 10 by pulling up the stirrer 2 once onto the water surface by operating the suspension chain 8 and directly rotating the discharge bend 9 without operating the traction tool 11.
[0009]
When the horizontal submersible motor 3 is driven in the state shown in FIGS. 1 and 2 in which the discharge bend 9 is rotated so that the discharge port 10 is in the downward direction, a downward water flow is generated by the rotation of the propeller 5 and the inside of the sewage treatment tank. Stir. Further, in the state of FIGS. 3 and 4 in which the discharge bend 9 is rotated so that the discharge port 10 is in the upward direction, the upward water flow is generated and the scum diffusion action on the water surface is generated, so that the carrier can easily circulate. Become. Then, after the scum is diffused, the discharge bend 9 is rotated so that the discharge port 10 is directed downward again, and the state shown in FIGS. In this way, effective sewage treatment is performed by efficiently circulating the carrier by alternately generating upward water flow and downward water flow. However, the rotation operation of the discharge bend 9 by the traction tool 11 described above is performed on the water surface. May be performed manually by visually recognizing or may be performed intermittently by automatic operation.
[0010]
【The invention's effect】
According to the stirrer in the sewage treatment tank of the present invention, the stirrer itself has a function of preventing scum accumulation, and effective sewage treatment is performed by efficiently circulating the carrier. There is an advantage that the initial cost and the running cost can be remarkably reduced without the need to separately install the equipment.
[Brief description of the drawings]
FIG. 1 is an explanatory view illustrating an operation mode of a stirring device in a sewage treatment tank according to the present invention, showing a state in which a discharge bend is rotated so that a discharge port is in a downward direction.
FIG. 2 is a longitudinal side view taken along line AA in FIG.
FIG. 3 is an explanatory view exemplifying an installation mode of a stirring device in a sewage treatment tank according to the present invention, and shows a state in which a discharge bend is rotated so that a discharge port is in an upward direction.
4 is a longitudinal side view taken along line BB in FIG. 3. FIG.
FIG. 5 is an explanatory view exemplifying an installation mode of a stirrer in a conventional sewage treatment tank, and shows an example in which a shower-type defoaming device is additionally provided.
FIG. 6 is an explanatory view exemplifying a conventional installation mode of a stirring device in a sewage treatment tank, and shows an example in which a scum suction device using a floating pump is additionally provided.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Support body 2 Stirrer 3 Horizontal submersible motor 4 Rotating shaft 5 Propeller 6 Guide ring 9 Discharge bend 10 Discharge port 11 Traction tool

Claims (2)

横型水中モータの回転軸にプロペラを嵌着し該プロペラの外周をガイドリングで囲繞してなる攪拌機を汚水処理槽内における支持体に支承させ、ガイドリングの口周部と回動自在に嵌合し回転軸と直交方向に吐出口を開口させたエルボ状の吐出ベンドを付設し、吐出口が下向き方向となるよう吐出ベンドを回動操作することにより汚水処理槽内攪拌のための下向き水流が発生し、吐出口が上向き方向となるよう吐出ベンドを回動操作することにより水面上のスカム拡散のための上向き水流が発生するよう構成したことを特徴とする、汚水処理槽内の攪拌装置。A propeller is fitted on the rotating shaft of a horizontal submersible motor, and the agitator, which surrounds the outer periphery of the propeller with a guide ring, is supported by a support in the sewage treatment tank and is pivotably fitted to the periphery of the guide ring. An elbow-shaped discharge bend with a discharge port opened in the direction orthogonal to the rotation axis is attached, and the downward flow of water for stirring in the sewage treatment tank is generated by rotating the discharge bend so that the discharge port is in the downward direction. A stirrer in a sewage treatment tank, characterized in that an upward water flow is generated for scum diffusion on the water surface by rotating the discharge bend so that the discharge port is directed upward. 吐出口の外側一端の繋留して上導させた牽引具の牽引操作により吐出口が上向き方向となるよう吐出ベンドが回転し、牽引具の牽引を弛める操作により吐出口が下向き方向となるよう吐出ベンドが回動するよう構成したことを特徴とする、請求項１記載の汚水処理槽内の攪拌装置。The discharge bend rotates so that the discharge port is directed upward by the pulling operation of the traction tool tethered and guided at the outer end of the discharge port, and the discharge port is discharged downward by the operation of loosening the traction of the traction tool. The stirrer in a wastewater treatment tank according to claim 1, wherein the bend is configured to rotate.
JP2001387489A 2001-12-20 2001-12-20 Stirrer in sewage treatment tank Expired - Lifetime JP4073664B2 (en)

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JP4073664B2 true JP4073664B2 (en) 2008-04-09

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101313254B (en) * 2005-11-28 2011-08-24 阪田油墨株式会社 Liquid developer

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4522319B2 (en) * 2005-05-31 2010-08-11 株式会社鶴見製作所 Scum remover

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101313254B (en) * 2005-11-28 2011-08-24 阪田油墨株式会社 Liquid developer

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