JPH0227878Y2 - - Google Patents
Info
- Publication number
- JPH0227878Y2 JPH0227878Y2 JP1985144752U JP14475285U JPH0227878Y2 JP H0227878 Y2 JPH0227878 Y2 JP H0227878Y2 JP 1985144752 U JP1985144752 U JP 1985144752U JP 14475285 U JP14475285 U JP 14475285U JP H0227878 Y2 JPH0227878 Y2 JP H0227878Y2
- Authority
- JP
- Japan
- Prior art keywords
- hollow shaft
- screw
- liquid
- air
- sucked
- 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
Links
- 239000007788 liquid Substances 0.000 claims description 16
- 230000002265 prevention Effects 0.000 claims description 11
- 238000005273 aeration Methods 0.000 claims description 8
- 238000003756 stirring Methods 0.000 description 3
- 238000005276 aerator Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000002023 wood Substances 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
Landscapes
- Activated Sludge Processes (AREA)
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
Description
【考案の詳細な説明】
産業上の利用分野
本考案は曝気装置の渦流防止装置に関するもの
である。[Detailed Description of the Invention] Industrial Application Field The present invention relates to a vortex prevention device for an aeration system.
従来の技術とその問題点
自吸式曝気装置として特公昭58−2094号公報に
開示されたものがある。これは液面上に設置した
モータより中空軸内に貫通した駆動軸下端にスク
リユーを設け、このスクリユーを回動させる時、
スクリユー先端部分の液中に負圧が発生する。こ
の負圧を利用して中空軸内を流下せしめる気体を
液中に開口した中空軸下端面より液中に放出さ
せ、液体と気体とを混合させる所謂他の気体押し
込み手段を有せずして自吸させるものである。こ
の自吸式曝気装置に於ては液の撹拌時、渦流が発
生し、この渦流が水面上に達すると、この液面よ
り液中に吸気され、中空軸内を通しての吸気量が
減少する。液面よりの吸気はさらに渦流を増大
し、撹拌抵抗を増すと共に液面附近のみの吸気と
なり槽又は池底部への吸気は行われない。これを
防ぐため中空軸下端の上部に円弧形の渦流防止板
を設けている。しかしこの方法では単に渦流を防
止するだけで、スクリユーの保護を行えず、また
撹拌流を池又は槽底まで導びくようにドラフトチ
ユーブを要するものとなる。Prior art and its problems There is a self-priming aeration device disclosed in Japanese Patent Publication No. 58-2094. This is done by installing a screw at the lower end of the drive shaft that penetrates into the hollow shaft from the motor installed above the liquid level, and when rotating this screw,
Negative pressure is generated in the liquid at the screw tip. Utilizing this negative pressure, the gas flowing down inside the hollow shaft is released into the liquid from the lower end surface of the hollow shaft that opens into the liquid, and the liquid and gas are mixed without using any other gas pushing means. It is made to self-inhale. In this self-priming aeration device, a vortex is generated when the liquid is stirred, and when this vortex reaches the water surface, air is sucked into the liquid from the liquid surface, reducing the amount of air sucked through the hollow shaft. Air intake from the liquid level further increases the vortex, increases the stirring resistance, and the air is only sucked in near the liquid level, and air is not sucked into the bottom of the tank or pond. To prevent this, an arc-shaped eddy current prevention plate is provided above the lower end of the hollow shaft. However, this method merely prevents vortex flow, but does not protect the screw, and also requires a draft tube to guide the stirring flow to the bottom of the pond or tank.
問題点の解決手段
自吸式曝気装置の中空軸下端に突設されたスク
リユーの外周部分を覆うようにして網又は多孔板
を用いて筒状にした渦流防止板を突設し、これに
よりスクリユーの保護とともにドラフトチユーブ
の役目をも兼ねるようにする。A solution to the problem: A vortex prevention plate made of a mesh or perforated plate is protruded to cover the outer circumference of the screw, which is protruded from the lower end of the hollow shaft of the self-priming aerator. In addition to protecting the air, it also serves as a draft tube.
実施例
以下本考案を図面に示す実施例にもとづいて説
明する。Embodiments The present invention will be described below based on embodiments shown in the drawings.
第１図は本考案網又は多孔板製筒状の渦流防止
板を示す正面図、第２図はその側面図、第３図は
網又は多孔板の拡大説明図である。 FIG. 1 is a front view showing a cylindrical eddy current prevention plate made of the net or perforated plate of the present invention, FIG. 2 is a side view thereof, and FIG. 3 is an enlarged explanatory view of the net or perforated plate.
図に於て１は曝気装置の中空軸で、この中空軸
の上部にはモータＭが配設されると共に上端は液
面上方位置で開口するかもしくは液面より上方位
置に穿孔した吸気孔より空気又は気体をこの中空
軸１内に吸入するようになす。２は上記中空軸１
内に貫通され、モータＭにて回転駆動される駆動
軸で、この軸２は中空軸１の下端より少し突出さ
せ、この下端にスクリユー４を固定する。この軸
２の長手方向の対向する側面例えば中空軸２の頂
面と下面にそつてフランジ部３，３が形成されて
いる。これは中空軸を形成するときのもので、こ
のフランジ部３を用いて渦流防止筒５を設ける。
この渦流防止筒は液中のスカムその他の不純物や
微生物の付着などによつてもあまり目詰りが生じ
ない程度で、しかも大きなごみ例えば空ビン．空
罐．木片などよりスクリユーを保護できる穿孔し
た材質例えばエキスパンドメタルを用いて筒形に
形成する。この筒の大きさは中空軸下端とスクリ
ユーとを完全に覆うい、かつこの筒内でスクリユ
ーが円滑に回動して液体の撹拌や充分に行なえよ
うにしてその内径、長さが定められる。またこの
筒形の渦流防止筒５はドラフトチユーブの役目を
も兼ねるため、スクリユーにて発生した渦流が所
要深度の液中もしくは底部にまで導びかれるのに
必要な長さ、形状を有するものとすると共にまた
必要に応じてこの筒形の両端縁の補強を行うた
め、図示の如く補強リング６，６を一体に設ける
こともある。 In the figure, 1 is a hollow shaft of the aeration device, and a motor M is disposed on the upper part of this hollow shaft, and the upper end is opened at a position above the liquid level or through an intake hole bored at a position above the liquid level. Air or gas is sucked into this hollow shaft 1. 2 is the above hollow shaft 1
A drive shaft is passed through the hollow shaft 1 and rotated by a motor M. This shaft 2 is made to protrude slightly from the lower end of the hollow shaft 1, and a screw 4 is fixed to this lower end. Flange portions 3, 3 are formed along opposite sides of the shaft 2 in the longitudinal direction, for example, along the top and bottom surfaces of the hollow shaft 2. This is used when forming a hollow shaft, and the eddy current prevention cylinder 5 is provided using this flange portion 3.
This eddy flow prevention cylinder does not get clogged by scum or other impurities in the liquid, or by the adhesion of microorganisms, and it also prevents clogging from large objects such as empty bottles. Empty can. It is formed into a cylindrical shape using a perforated material such as expanded metal that can protect the screw from a piece of wood. The size of this cylinder is such that it completely covers the lower end of the hollow shaft and the screw, and its inner diameter and length are determined so that the screw can rotate smoothly within this cylinder to sufficiently stir the liquid. In addition, since this cylindrical swirl prevention tube 5 also serves as a draft tube, it must have the length and shape necessary to guide the swirl generated by the screw into the liquid at a required depth or to the bottom. At the same time, in order to reinforce both ends of this cylindrical shape as necessary, reinforcing rings 6, 6 may be provided integrally as shown in the figure.
この筒形の渦流防止筒５を中空軸１へ固定する
にはこの筒の外部に１乃至２以上の取付金具７，
７を突設し、この取付金具７の先端を中空軸のフ
ランジ部３にボルト等にて固着するか、又は中空
軸の外周面に溶着してもよい。 In order to fix this cylindrical vortex prevention tube 5 to the hollow shaft 1, one or more mounting brackets 7 are installed on the outside of this tube.
7 may be provided protrudingly, and the tip of this mounting fitting 7 may be fixed to the flange portion 3 of the hollow shaft with bolts or the like, or may be welded to the outer peripheral surface of the hollow shaft.
又円筒をネツト又多孔板からなる筒状体にする
ことにより、孔のない円筒に比し、負荷が増すこ
となく、空気の吹込みも増加するので、曝気効率
が向上する。 Furthermore, by making the cylinder a cylindrical body made of a net or a perforated plate, compared to a cylinder without holes, the load does not increase and the amount of air blown can be increased, so that the aeration efficiency is improved.
考案の効果
本考案による時はスクリユー外周を覆うように
なした渦流防止筒を網又は多孔板にて筒形として
いる為、スクリユーを保護できると共に渦流を防
止し、かつ曝気機を負荷を増すことなく、空気の
吹込みも増加するので、効率のよい曝気を行う利
点を有する。Effects of the invention According to the present invention, the eddy current prevention tube that covers the outer circumference of the screw is cylindrical with a mesh or perforated plate, which protects the screw, prevents eddy current, and increases the load on the aerator. This has the advantage of efficient aeration since the amount of air blowing increases.
第１図は要部の正面図、第２図は側面図、第３
図はエキスパンドメタルの拡大図、第４図は実施
例図である。
１は中空軸、２は駆動軸、３はフランジ部、４
はスクリユー、５は渦流防止筒、６は補強リン
グ、７は取付金具。
Figure 1 is a front view of the main parts, Figure 2 is a side view, and Figure 3 is a front view of the main parts.
The figure is an enlarged view of the expanded metal, and FIG. 4 is an example view. 1 is a hollow shaft, 2 is a drive shaft, 3 is a flange part, 4
5 is the screw, 5 is the vortex prevention tube, 6 is the reinforcing ring, and 7 is the mounting bracket.
Claims (1)
を設け、該スクリユーの回動にて液中に発生する
負圧を利用し、中空軸内を通して吸気するように
した目吸式曝気装置に於いて、網又は多孔板から
なる筒状体をスクリユー外周の全周に配したこと
を特徴とする曝気装置の渦流防止装置。 In an eye suction type aeration device, a screw is provided at the lower end of a hollow shaft driven by a motor, and air is sucked through the hollow shaft by utilizing the negative pressure generated in the liquid by the rotation of the screw. A vortex flow prevention device for an aeration device, characterized in that a cylindrical body made of a mesh or a perforated plate is arranged around the entire outer circumference of a screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985144752U JPH0227878Y2 (en) | 1985-09-20 | 1985-09-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985144752U JPH0227878Y2 (en) | 1985-09-20 | 1985-09-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6250721U JPS6250721U (en) | 1987-03-30 |
| JPH0227878Y2 true JPH0227878Y2 (en) | 1990-07-26 |
Family
ID=31055646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985144752U Expired JPH0227878Y2 (en) | 1985-09-20 | 1985-09-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0227878Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0641679Y2 (en) * | 1989-03-13 | 1994-11-02 | 日立機電工業株式会社 | Aeration device |
| JP3958346B1 (en) * | 2006-07-11 | 2007-08-15 | 南舘 誠 | Microbubble generator |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5721098B2 (en) * | 1974-04-06 | 1982-05-04 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54177758U (en) * | 1978-06-05 | 1979-12-15 | ||
| JPS6223597Y2 (en) * | 1980-07-14 | 1987-06-16 |
-
1985
- 1985-09-20 JP JP1985144752U patent/JPH0227878Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5721098B2 (en) * | 1974-04-06 | 1982-05-04 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6250721U (en) | 1987-03-30 |
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