JPH0528498U - Aeration device - Google Patents
Aeration deviceInfo
- Publication number
- JPH0528498U JPH0528498U JP084735U JP8473591U JPH0528498U JP H0528498 U JPH0528498 U JP H0528498U JP 084735 U JP084735 U JP 084735U JP 8473591 U JP8473591 U JP 8473591U JP H0528498 U JPH0528498 U JP H0528498U
- Authority
- JP
- Japan
- Prior art keywords
- hollow shaft
- screw
- intake
- shaft
- aeration
- 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
Links
- 238000005273 aeration Methods 0.000 title claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 230000000903 blocking effect Effects 0.000 claims abstract description 6
- 238000005276 aerator Methods 0.000 claims description 9
- 230000000694 effects Effects 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 abstract description 2
- 239000010865 sewage Substances 0.000 description 9
- 238000001816 cooling Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 239000010840 domestic wastewater Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 239000005061 synthetic rubber 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
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
Abstract
(57)【要約】
【目的】 中空軸内に穿孔した吸気孔に、液体の撹拌曝
気により発生する泡により閉塞されないようにして曝気
効果を向上せしめる。
【構成】 上部に吸気孔Ｈを、下端にスクリュー５を備
えた中空軸４を軸カバー内２を貫通してモータ３の駆動
にてスクリュー先端水域に生じる負圧を利用して吸気口
より吸気し、スクリュー下端に放気する。そして中空軸
４に穿孔した吸気孔Ｈの少なくとも下部位置に円板状の
遮弊板１０を突設する。これにより軸カバー内に侵入す
る泡を消泡し、吸気孔の閉塞を未然に防止する。
(57) [Abstract] [Purpose] The aeration effect is improved by preventing the air intake holes bored in the hollow shaft from being blocked by bubbles generated by aeration and aeration of liquid. [Structure] An intake hole H is provided at an upper part and a hollow shaft 4 having a screw 5 at a lower end is penetrated through a shaft cover 2 to utilize a negative pressure generated in a screw tip water region by driving a motor 3 so as to intake from an intake port. And let the bottom of the screw vent. Then, a disc-shaped blocking plate 10 is projectingly provided at least at a lower position of the intake hole H formed in the hollow shaft 4. As a result, the bubbles that enter the shaft cover are eliminated, and the intake holes are prevented from being blocked.
Description
【０００１】[0001]
本考案は中空軸内に穿孔した吸気孔に、液体の撹拌曝気により発生する泡によ り閉塞されないようにして曝気効果を向上せしめた曝気装置に関するものである 。 The present invention relates to an aeration device in which an aeration effect is improved by preventing an air intake hole bored in a hollow shaft from being blocked by bubbles generated by aeration and aeration of a liquid.
【０００２】[0002]
従来汚水等の処理、即ち汚水中に空気に吹き込み、曝気により生物処理を行う 場合、汚水の種別等により汚水を撹拌曝気すると、多量の泡が発生することがあ る。特に近年、家庭廃水中に含有される洗剤等によりこの泡の発生が汚水処理に 際して一つの問題となっている。 In the conventional treatment of sewage, that is, when biological treatment is performed by blowing air into sewage and aerating it, a large amount of bubbles may be generated if the sewage is stirred and aerated depending on the type of sewage. Particularly in recent years, the generation of bubbles has become one of the problems in the treatment of sewage due to the detergent contained in domestic wastewater.
【０００３】[0003]
汚水の曝気において、自吸式スクリュー曝気機が用いられる。これはスクリュ ーの回動にてスクリュー先端水域に発生する負圧を利用し、スクリューを固定し た中空軸内を空気を流下させて水中へ放気するもので、この空気の吸引は中空軸 の上部に穿孔して、中空軸内の負圧にて行っている。このため、汚水の撹拌曝気 によって泡が発生し、これが徐々に生長して水面上に盛り上がっていると、曝気 機の中空状カバー内へも侵入し、これが中空軸の吸気孔を塞ぐようになり、吸気 不能、もしくは吸気量が減少して充分な曝気が行えなくなる。 A self-priming screw aerator is used for aeration of sewage. This utilizes the negative pressure generated in the water area at the tip of the screw due to the rotation of the screw, and allows air to flow down through the hollow shaft with the screw fixed, and this air is sucked into the hollow shaft. Is bored in the upper part of the hollow shaft and negative pressure is applied inside the hollow shaft. As a result, bubbles are generated due to aeration and aeration of sewage, and when they grow and rise to the surface of the water, they also penetrate into the hollow cover of the aerator, which blocks the air intake holes of the hollow shaft. , Inhalation is impossible, or the amount of inhalation decreases and sufficient aeration cannot be performed.
【０００４】 本考案は発生した泡が曝気機のカバー内に侵入しても吸気孔を塞ぐことがない ようにすることを目的とする。An object of the present invention is to prevent the generated air bubbles from blocking the air intake hole even if they enter the cover of the aerator.
【０００５】[0005]
本考案は上記目的を達成するためになしたもので、上部に吸気孔を、下端にス クリューを備えた中空軸を軸カバー内を貫通してモータの駆動にてスクリュー先 端水域に生じる負圧を利用して吸気口より吸気し、スクリュー下端に放気する曝 気機において、中空軸に穿孔した吸気孔の少なくとも下部位置に円板状の遮弊板 を突設し、軸カバー内に侵入する泡を消泡し、吸気孔の閉塞を未然に防止したこ とを要旨とする。 The present invention was made in order to achieve the above-mentioned object, and a hollow shaft having an intake hole at the upper part and a screw at the lower end penetrates through the shaft cover to generate negative pressure in the water area at the screw tip by driving the motor. In an aerator that uses pressure to inhale from the intake port and discharges to the lower end of the screw, a disc-shaped shield plate is provided at least under the intake hole drilled in the hollow shaft, and is installed inside the shaft cover. The gist is that the invading bubbles are defoamed to prevent the intake holes from being blocked.
【０００６】[0006]
下端にスクリューを備え、かつ水面より上方の上部に吸気孔を穿孔した中空軸 を曝気機の筒状をしたカバー内に挿通し、カバーの上部位置より吸気する。この 時、カバー内において、かつ吸気孔の少なくとも下部位置に遮弊板を中空軸に突 設する。これによりカバー内に吸引した空気は吸気孔より中空軸内へ吸引し、ス クリュー下端より水中へ放出するが、汚水の撹拌にて発生した泡がカバー内へ侵 入してきても、中空軸の吸気孔下部位置の遮弊板にて、泡はそれ以上の侵入を阻 止されるので、吸気孔は塞がれることがなく、吸気を行い続け、所定の曝気が行 える。 A hollow shaft equipped with a screw at the lower end and having an intake hole drilled in the upper part above the water surface is inserted into the cylindrical cover of the aerator, and air is taken in from the upper part of the cover. At this time, an obstruction plate is provided on the hollow shaft so as to project in the cover and at least at a position below the intake hole. As a result, the air sucked into the cover is sucked into the hollow shaft from the intake hole and discharged into the water from the lower end of the screw.However, even if bubbles generated by stirring the dirty water enter the cover, Since the bubbles are prevented from further entering by the blocking plate at the lower part of the air intake hole, the air intake hole is not blocked, and the air intake is continued and a predetermined aeration can be performed.
【０００７】[0007]
以下本考案曝気装置を図示の実施例にもとづいて説明する。 図においてＡは本考案曝気装置の全体を示し、架台より垂下した取付ブラケッ トＢにて曝気機のフレームＦを支持し、水面に対し、先端のスクリューが所定の 深度に、また所定侵入角度となるようにして設置される。 The aeration apparatus of the present invention will be described below based on the illustrated embodiment. In the figure, A shows the whole aeration device of the present invention, in which a frame F of the aerator is supported by a mounting bracket B hung from a stand, and the screw at the tip has a predetermined depth and a predetermined penetration angle with respect to the water surface. Will be installed.
【０００８】 曝気機のフレームＦにはモータカバー１と軸カバー２とを接合して支持すると 共に、モータカバー１内にモータ３を、軸カバー２内に中空軸４をそれぞれ納め 、中空軸４の上端はモータ軸に固定され、モータ３にて回動されるように支持す る。The motor cover 1 and the shaft cover 2 are joined to and supported by the frame F of the aerator, and the motor 3 is housed in the motor cover 1 and the hollow shaft 4 is housed in the shaft cover 2. The upper end of is fixed to the motor shaft, and is supported so as to be rotated by the motor 3.
【０００９】 中空軸４の下端には汚水を撹拌、及び曝気するのに適した形状を有するスクリ ュー５が突設され、常に水面より上方位置となる上部位置に吸気孔Ｈが穿孔され ると共に、この吸気孔Ｈ位置にほぼ対向するようにして軸カバー２に曝気用空気 取入口６が設けられる。これは軸カバー２に空気取入管７を突設し、この管７の 上端を成長した泡の最高位置よりも上方位置となるようにして、その長さが定め られる。At the lower end of the hollow shaft 4, a screen 5 having a shape suitable for stirring and aerating sewage is projected, and an intake hole H is formed at an upper position which is always above the water surface. An aeration air intake 6 is provided in the shaft cover 2 so as to substantially face the intake hole H position. The length is determined by projecting an air intake pipe 7 on the shaft cover 2 and setting the upper end of the pipe 7 to a position higher than the highest position of the grown bubbles.
【００１０】 モータカバー１にも同様にして泡の最高位置より上方位置にモータ冷却用の空 気取入口８と冷却後の空気吐出口９を設け、これによりモータの冷却を行わしめ る。Similarly, the motor cover 1 is also provided with an air intake 8 for cooling the motor and an air discharge port 9 for cooling the motor at a position above the highest position of the bubbles, thereby cooling the motor.
【００１１】 中空軸４には吸気孔Ｈの下部位置、あるいは吸気孔Ｈの下部と上部の両位置に 遮弊板１０を突設する。この遮弊板１０は円板状で、中空軸４に固定され、中空 軸４とともに回動するが、その外周縁は軸カバー２の内周面にほぼ近接して若干 の隙間を有するも、軸カバー内に侵入してくる泡が、この下部側の遮弊板１０に てそれ以上の侵入が阻止されるようになす。この遮弊板１０は金属板の他に、上 記目的を達成すれば、その材質として合成樹脂・ゴムその他を用いることができ る。The hollow shaft 4 is provided with an obstruction plate 10 at a lower position of the intake hole H, or at both lower and upper positions of the intake hole H. The shielding plate 10 has a disk shape and is fixed to the hollow shaft 4 and rotates together with the hollow shaft 4. The outer peripheral edge of the shield plate 10 is close to the inner peripheral surface of the shaft cover 2 and has a slight gap. Bubbles that enter the shaft cover are prevented from further entering the shield plate 10 on the lower side. In addition to the metal plate, the shielding plate 10 may be made of synthetic resin, rubber or the like as its material if the above object is achieved.
【００１２】 また遮弊板１０は中空軸４に突設する代わりに軸カバー２内に、即ち中空軸を 挿通する孔を中央に穿孔した座金状としてこれを取り付けることも可能で、同様 な作用を有する。Further, the shielding plate 10 may be mounted in the shaft cover 2 instead of being projected from the hollow shaft 4, that is, in the form of a washer having a hole through which the hollow shaft is inserted at the center. Have.
【００１３】[0013]
本考案曝気装置は上部に吸気孔を、下端にスクリューを備えた中空軸を軸カバ ー内を貫通してモータの駆動にてスクリュー先端水域に生じる負圧を利用して吸 気口より吸気し、スクリュー下端に放気する曝気機において、中空軸に穿孔した 吸気孔の少なくとも下部位置に円板状の遮弊板を突設するようになしたため、汚 水の撹拌曝気によって発生した泡が成長して軸カバー内に侵入してきても遮弊板 にてそれ以上の侵入が阻止され、吸気孔の閉塞が防止されるので、吸気量を減少 されることなく、所定の曝気が行える。しかもこの回転する円板状の遮弊板にて 軸カバー内に侵入してきた泡の上部が機械的な剪断力を受けて消泡され、吸気孔 の閉塞を防止するものである。 The aeration device of the present invention penetrates the hollow shaft equipped with an intake hole at the upper part and a screw at the lower end through the shaft cover, and uses the negative pressure generated in the screw tip water region by driving the motor to inhale from the intake port. In an aerator that discharges air to the lower end of the screw, a disc-shaped barrier plate is provided so as to project at least at the lower position of the intake hole that is drilled in the hollow shaft, so that bubbles generated by aeration and aeration of sewage grow. Even if the air enters the shaft cover, the blocking plate prevents the air from further entering and prevents the intake hole from being blocked, so that a predetermined aeration can be performed without reducing the intake air amount. In addition, the rotating disc-shaped blocking plate prevents the upper part of the bubbles that have entered the shaft cover from being mechanically sheared and defoamed, thereby preventing the intake holes from being blocked.
【図１】本考案曝気装置の要部を示す拡大断面図であ
る。FIG. 1 is an enlarged cross-sectional view showing a main part of an aeration device of the present invention.
【図２】同曝気装置の外観全体を示す正面図である。FIG. 2 is a front view showing the overall appearance of the aeration apparatus.
【図３】同側面図である。FIG. 3 is a side view of the same.
１ モータカバー ２ 軸カバー ３ モータ ４ 中空軸 ５ スクリュー ６ 空気取入口 １０ 遮弊板 Ｈ 吸気孔 1 Motor Cover 2 Shaft Cover 3 Motor 4 Hollow Shaft 5 Screw 6 Air Intake 10 Barrier Plate H Intake Hole
Claims (1)
えた中空軸を軸カバー内を貫通してモータの駆動にてス
クリュー先端水域に生じる負圧を利用して吸気口より吸
気し、スクリュー下端に放気する曝気機において、中空
軸に穿孔した吸気孔の少なくとも下部位置に円板状の遮
弊板を突設し、軸カバー内に侵入する泡を消泡し、吸気
孔の閉塞を未然に防止したことを特徴とする曝気装置。1. A screw shaft is provided with an intake hole at an upper part and a hollow shaft having a screw at a lower end, and penetrates through a shaft cover to suck air from an intake port by using a negative pressure generated in a water region at a screw tip by driving a motor. In an aerator that discharges air to the lower end, a disc-shaped blocking plate is provided at least at the lower position of the intake hole drilled in the hollow shaft to eliminate bubbles entering the shaft cover and block the intake hole. An aeration device characterized by being prevented beforehand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991084735U JPH0646557Y2 (en) | 1991-09-20 | 1991-09-20 | Aeration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991084735U JPH0646557Y2 (en) | 1991-09-20 | 1991-09-20 | Aeration device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0528498U true JPH0528498U (en) | 1993-04-16 |
| JPH0646557Y2 JPH0646557Y2 (en) | 1994-11-30 |
Family
ID=13838956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1991084735U Expired - Lifetime JPH0646557Y2 (en) | 1991-09-20 | 1991-09-20 | Aeration device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0646557Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59138432U (en) * | 1983-03-02 | 1984-09-14 | 日立機電工業株式会社 | liquid stirring device |
-
1991
- 1991-09-20 JP JP1991084735U patent/JPH0646557Y2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59138432U (en) * | 1983-03-02 | 1984-09-14 | 日立機電工業株式会社 | liquid stirring device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0646557Y2 (en) | 1994-11-30 |
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