JPH07275681A - Stirring blade - Google Patents

Stirring blade

Info

Publication number
JPH07275681A
JPH07275681A JP7058531A JP5853195A JPH07275681A JP H07275681 A JPH07275681 A JP H07275681A JP 7058531 A JP7058531 A JP 7058531A JP 5853195 A JP5853195 A JP 5853195A JP H07275681 A JPH07275681 A JP H07275681A
Authority
JP
Japan
Prior art keywords
stirring
section
cross
blade
blades
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
Application number
JP7058531A
Other languages
Japanese (ja)
Other versions
JP2987073B2 (en
Inventor
Sunao Kawamura
直 河村
Kazunori Harada
和紀 原田
Eiji Maruyama
英治 丸山
Yasuhiko Mizuseki
康彦 水関
Keisuke Sekida
啓介 関田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Hitachi Plant Technologies Ltd
Original Assignee
Hitachi Techno Engineering Co Ltd
Hitachi Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Techno Engineering Co Ltd, Hitachi Ltd filed Critical Hitachi Techno Engineering Co Ltd
Priority to JP7058531A priority Critical patent/JP2987073B2/en
Publication of JPH07275681A publication Critical patent/JPH07275681A/en
Application granted granted Critical
Publication of JP2987073B2 publication Critical patent/JP2987073B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Mixers Of The Rotary Stirring Type (AREA)

Abstract

PURPOSE:To enhance stirring effect especially in a gas-liquid mixing stirrer by performing stirring with a stirring blade consisting of blades each having a recessed cross section toward a rotary direction and assymmetric in its cross section with respects to a horizontal axis so that the upper part of the cross section protrudes in the rotary direction as compared with the lower part thereof. CONSTITUTION:Stirring is performed with a stirring blade consisting of blades 8 each having a recessed cross section toward a rotary direction 7 and assymmetric in its cross section with respect to a horizontal axis to that the upper part of the cross section protrudes in the rotary direction as compared with the lower part thereof. That is, the air 12 blown in a stirring tank 1 from an air blowing-in port 3 raises through a liquid 13 and almost all of the air 12 impinges against the blades 8 to be sucked to the insides 11 of the recessed cross sections thereof to be strongly emitted into the liquid 13 resent in the outer peripheral parts 15 of the blades 8 by the centrifugal force generated by the rotation of the blades 8. As a result, the air 12 is uniformly dispersed into the liquid 13 and stirring effect is enhanced to a large extent as compared with a conventional stirring blade.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は立型撹拌機、特に気液混
合を目的とした撹拌機に好適な撹拌翼に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vertical stirrer, and more particularly to a stirring blade suitable for a stirrer for the purpose of gas-liquid mixing.

【０００２】[0002]

【従来の技術】従来の撹拌翼は、断面が凹凸となってい
ない平羽根や、断面が水平軸に対して対象形の凹状断面
の羽根を有していた。関連する従来技術としては、例え
ば特開昭６０−６４６２１号公報が挙げられる。2. Description of the Related Art Conventional stirring impellers have flat blades whose cross section is not uneven, and blades whose cross section is concave with respect to the horizontal axis. As a related conventional technique, there is, for example, JP-A-60-64621.

【０００３】[0003]

【発明が解決しようとする課題】上記従来技術の平羽根
では、撹拌槽の下部より吹き込まれた気体等の密度の低
い流体のほとんどは平羽根に当って撹拌されるが、その
一部は複数の平羽根の間を通過して上昇するために十分
な撹拌効果が得られない。また、断面が水平軸に対して
対象形の凹状断面を有した羽根においても、同様の問題
があった。In the above-mentioned conventional flat blade, most of the low density fluid such as gas blown from the lower part of the stirring tank hits the flat blade and is stirred, but some of them are plural. Since it passes through between the flat blades and rises, a sufficient stirring effect cannot be obtained. Further, the same problem occurs in a blade whose cross section has a concave cross section symmetrical with respect to the horizontal axis.

【０００４】本発明の目的は、特に気液混合用の撹拌機
に用いて撹拌効果の向上が期待される撹拌翼、撹拌装置
並びに撹拌方法を提供することにある。An object of the present invention is to provide a stirring blade, a stirring device, and a stirring method which are expected to improve the stirring effect particularly when used in a gas-liquid mixing stirrer.

【０００５】[0005]

【課題を解決するための手段】上記目的を達成するため
に、各羽根を回転方向に向って凹状断面とし、凹状断面
の上側がその下側よりも回転方向に突出するように断面
が水平軸に対して非対象形の羽根としたものである。ま
た、さらに撹拌効果を向上させるためにこの羽根に複数
の小径穴を設けたものである。In order to achieve the above object, each blade has a concave cross section in the direction of rotation, and the cross section has a horizontal axis such that the upper side of the concave cross section projects in the rotational direction more than the lower side. On the other hand, it is an asymmetrical blade. Further, in order to further improve the stirring effect, this blade is provided with a plurality of small diameter holes.

【０００６】[0006]

【作用】凹状断面の上側がその下側よりも回転方向に突
出するような断面であるため、撹拌槽の下部より吹き込
まれた気体等の密度の低い流体のほとんどは上側の回転
方向に突出した羽根に当って凹状断面の内側に吸い込ま
れ、回転による遠心力により羽根の外周方向に吐出さ
れ、羽根の外周部の液体中に吐出されて混合，撹拌され
る。また、この羽根に複数の小径穴が設けられていれ
ば、凹状断面の内側に吸い込まれた流体の一部はこの小
径穴を通過して羽根後方の液体中に吐出されて混合，撹
拌が行われ、撹拌効果がさらに向上する。[Function] Since the upper side of the concave cross section projects in the rotational direction more than the lower side, most of the low density fluid such as gas blown from the lower part of the stirring tank projects in the upper rotational direction. It is sucked into the inside of the concave cross section by hitting the blade, discharged by the centrifugal force due to the rotation in the outer peripheral direction of the blade, and discharged into the liquid on the outer peripheral portion of the blade to be mixed and stirred. If the blade has a plurality of small diameter holes, part of the fluid sucked inside the concave cross section passes through the small diameter hole and is discharged into the liquid behind the blade for mixing and stirring. The stirring effect is further improved.

【０００７】[0007]

【実施例】以下、本発明の一実施例を図１および図２に
より説明する。撹拌槽１には気体吹き込みノズル２およ
び気体吹き込みノズル２と連結された気体吹出口３が設
けられている。駆動装置４により回転するシャフト５に
は、撹拌翼取付用のデイスク６が設けられている。撹拌
翼を形成する複数の羽根８はこのデイスク６に取り付け
られる。この羽根８は回転方向に向って凹状断面を有
し、凹状断面の上側９が凹状断面の下側１０よりも回転
方向７に突出するように断面が水平軸Ａ−Ａに対して非
対象形となっており、上記シャフト５と共に回転する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. The stirring tank 1 is provided with a gas blowing nozzle 2 and a gas blowing outlet 3 connected to the gas blowing nozzle 2. A disk 6 for mounting a stirring blade is provided on a shaft 5 rotated by the drive device 4. A plurality of blades 8 forming a stirring blade are attached to the disk 6. The blade 8 has a concave cross section in the rotational direction, and the cross section is asymmetrical with respect to the horizontal axis AA so that the upper side 9 of the concave cross section projects in the rotational direction 7 more than the lower side 10 of the concave cross section. And rotates together with the shaft 5.

【０００８】以上のように構成されているので、気体吹
き込みノズル２を通って気体吹込口３より撹拌槽１内に
吹き込まれた気体１２は液体１３中を上昇し、そのほと
んどは羽根８の回転方向７に突出した上側の羽根９に当
って凹状断面の内側１１に吸い込まれ、羽根８の回転に
よる遠心力により、羽根８の外周部１５にある液体１３
中に強く吐出される。この結果、気体１２は液体１３中
に均一に分散され、従来の撹拌翼に比べて撹拌効果が大
幅に向上する。なお、羽根８に複数の小径穴を設けれ
ば、気体１２の一部はこの小径穴を通過することにより
撹拌効果はさらに向上する。With the above-described structure, the gas 12 blown into the stirring tank 1 through the gas blowing nozzle 2 through the gas blowing nozzle 3 rises in the liquid 13, and most of the gas 12 rotates the blade 8. The liquid 13 on the outer peripheral portion 15 of the blade 8 is agitated by the upper blade 9 protruding in the direction 7 and sucked into the inner side 11 of the concave cross section, and by the centrifugal force generated by the rotation of the blade 8.
It is ejected strongly inside. As a result, the gas 12 is uniformly dispersed in the liquid 13, and the stirring effect is significantly improved as compared with the conventional stirring blade. If the blade 8 is provided with a plurality of small diameter holes, a part of the gas 12 passes through the small diameter holes to further improve the stirring effect.

【０００９】[0009]

【発明の効果】本発明によれば、撹拌槽の下部より吹き
込まれた気体は液体中に均一に分散し、従来の撹拌翼に
比べて撹拌効果が大巾に向上する。According to the present invention, the gas blown from the lower part of the stirring tank is uniformly dispersed in the liquid, and the stirring effect is greatly improved as compared with the conventional stirring blade.

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明の一実施例を示す縦断面図である。FIG. 1 is a vertical sectional view showing an embodiment of the present invention.

【図２】図１のＢ−Ｂ線断面図である。FIG. 2 is a sectional view taken along line BB of FIG.

【符号の説明】[Explanation of symbols]

１…撹拌槽、５…シャフト、６…デイスク、８…羽根、
１２…気体、１３…液体。1 ... stirring tank, 5 ... shaft, 6 ... disk, 8 ... blade,
12 ... Gas, 13 ... Liquid.

───────────────────────────────────────────────────── フロントページの続き (72)発明者 丸山 英治 山口県下松市大字東豊井794番地 株式会 社日立製作所笠戸工場内 (72)発明者 水関 康彦 山口県下松市大字東豊井794番地 日立テ クノエンジニアリング株式会社笠戸事業所 内 (72)発明者 関田 啓介 山口県下松市大字東豊井794番地 日立テ クノエンジニアリング株式会社笠戸事業所 内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Eiji Maruyama Eiji Maruyama 794 Azuma Higashitoyo, Shimomatsu, Yamaguchi Prefecture Inside the Kasado Plant, Hitachi, Ltd. Techno Engineering Co., Ltd., Kasado Plant (72) Inventor Keisuke Sekita, 794, Higashitoyoi, Higashitoyoi, Kudamatsu City, Yamaguchi Prefecture Hitachi Techno Engineering Co., Ltd., Kasado Plant

Claims (3)

【特許請求の範囲】[Claims] 【請求項１】各羽根が回転方向に向かって凹状断面を有
し、凹状断面の上側が凹状断面の下側よりも回転方向に
突出するように断面が水平軸に対して非対象形の羽根で
あることを特徴とする撹拌翼。1. A blade whose cross section is asymmetric with respect to the horizontal axis so that each blade has a concave cross section in the rotational direction, and the upper side of the concave cross section projects in the rotational direction more than the lower side of the concave cross section. A stirring blade characterized by being. 【請求項２】請求項１記載の撹拌翼を用いた撹拌装置。2. A stirring device using the stirring blade according to claim 1. 【請求項３】各羽根が回転方向に向かって凹状断面を有
し、凹状断面の上側が凹状断面の下側よりも回転方向に
突出するように断面が水平軸に対して非対象形の羽根か
らなる撹拌翼により撹拌を行うことを特徴とする撹拌方
法。3. A blade whose cross section is asymmetric with respect to the horizontal axis so that each blade has a concave cross section in the rotational direction, and the upper side of the concave cross section projects in the rotational direction more than the lower side of the concave cross section. The stirring method is characterized in that the stirring is performed by a stirring blade comprising.
JP7058531A 1995-03-17 1995-03-17 Stirring blade, stirring device and stirring method Expired - Lifetime JP2987073B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7058531A JP2987073B2 (en) 1995-03-17 1995-03-17 Stirring blade, stirring device and stirring method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7058531A JP2987073B2 (en) 1995-03-17 1995-03-17 Stirring blade, stirring device and stirring method

Publications (2)

Publication Number Publication Date
JPH07275681A true JPH07275681A (en) 1995-10-24
JP2987073B2 JP2987073B2 (en) 1999-12-06

Family

ID=13087024

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7058531A Expired - Lifetime JP2987073B2 (en) 1995-03-17 1995-03-17 Stirring blade, stirring device and stirring method

Country Status (1)

Country Link
JP (1) JP2987073B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7296925B2 (en) * 2003-05-08 2007-11-20 EKATO Rühr- und Mischtechnik GmbH Agitator with improved blade configuration
KR20160002993U (en) * 2013-12-26 2016-08-30 스미토모 쥬기카이 프로세스 기키 가부시키가이샤 Stirring blade and stirring device
CN109267828A (en) * 2018-12-07 2019-01-25 湖北科技学院 A kind of one-to-many electron key and matched theftproof lock
CN110773048A (en) * 2019-11-14 2020-02-11 威尚生物技术（合肥）有限公司 Reagent bottle mixing device
CN114146592A (en) * 2021-10-26 2022-03-08 浙江长江搅拌设备有限公司 Composite stirring paddle

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7296925B2 (en) * 2003-05-08 2007-11-20 EKATO Rühr- und Mischtechnik GmbH Agitator with improved blade configuration
KR20160002993U (en) * 2013-12-26 2016-08-30 스미토모 쥬기카이 프로세스 기키 가부시키가이샤 Stirring blade and stirring device
CN109267828A (en) * 2018-12-07 2019-01-25 湖北科技学院 A kind of one-to-many electron key and matched theftproof lock
CN110773048A (en) * 2019-11-14 2020-02-11 威尚生物技术（合肥）有限公司 Reagent bottle mixing device
CN114146592A (en) * 2021-10-26 2022-03-08 浙江长江搅拌设备有限公司 Composite stirring paddle
CN114146592B (en) * 2021-10-26 2023-10-27 浙江长江搅拌设备有限公司 Composite stirring paddle

Also Published As

Publication number Publication date
JP2987073B2 (en) 1999-12-06

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