JP5749593B2

JP5749593B2 - Air diffuser

Info

Publication number: JP5749593B2
Application number: JP2011161777A
Authority: JP
Inventors: 操安井; 広志瀧; 知晴小島
Original assignee: Daicen Membrane Systems Ltd
Current assignee: Daicen Membrane Systems Ltd
Priority date: 2011-07-25
Filing date: 2011-07-25
Publication date: 2015-07-15
Anticipated expiration: 2031-07-25
Also published as: JP2013022546A

Description

本発明は、水処理設備の生物処理槽内に設置して使用する用途に適した散気装置に関する。 The present invention relates to an air diffuser suitable for use in a biological treatment tank of a water treatment facility.

汚水処理施設において、微生物を使用する生物処理槽内には曝気するための散気装置が使用される。この散気装置としては、角型のメンブレンディフューザ、チューブ型のメンブレンディフューザ等を使用したものが知られている。 In a sewage treatment facility, an air diffuser for aeration is used in a biological treatment tank that uses microorganisms. As this air diffuser, those using a square membrane diffuser, a tube type membrane diffuser or the like are known.

チューブ型のメンブレンディフューザを使用した散気装置としては、例えば、特許文献１の図２に示すようにして、送風管（空気供給管）４０に形成された複数の開口部に複数のチューブ型のメンブレンディフューザを接続して取り付けたものが知られている。
しかし、送風管に対してチューブ型のメンブレンディフューザを直接ねじ込み等の手段接続した形態のものの場合、長期間運転を継続したときには、生物処理槽内の水圧や散気時において加えられる浮力等の外力によって、接続部分が破損し易いという問題がある。 As an air diffuser using a tube type membrane diffuser, for example, as shown in FIG. 2 of Patent Document 1, a plurality of tube types are provided in a plurality of openings formed in a blower pipe (air supply pipe) 40. A membrane diffuser connected and attached is known.
However, in the case where the tube type membrane diffuser is directly connected to the blower pipe by means such as screwing, external force such as buoyancy applied during the water pressure or diffused in the biological treatment tank when the operation is continued for a long time. Therefore, there is a problem that the connection part is easily damaged.

この問題を解決する方法として、複数部品の組み合わせからなる樹脂製の取り付け具を介して、送風管にチューブ型のメンブレンディフューザを取り付ける方法がある。
しかし、取り付け時に樹脂製の部品同士が接触することにより割れ等の破損が生じ易いという問題があり、特に寒冷時においては前記問題が発生し易い傾向がある。
さらに、送風管に複数のチューブ型のメンブレンディフューザを取り付けたときには、全てのチューブ型のメンブレンディフューザが同じ水平位置にあることが望ましいが、この点においてもバラツキが生じる傾向があり、改善の余地がある。 As a method for solving this problem, there is a method of attaching a tube-type membrane diffuser to a blower pipe through a resin fitting made of a combination of a plurality of components.
However, there is a problem that breakage such as cracking is likely to occur due to the resin parts coming into contact with each other at the time of attachment, and the above-mentioned problem tends to occur particularly in cold weather.
Furthermore, when multiple tube-type membrane diffusers are attached to the air duct, it is desirable that all the tube-type membrane diffusers be in the same horizontal position, but this also tends to cause variations, and there is room for improvement. is there.

特開２００８−２２１１５８号公報JP 2008-221158 A

本発明は、空気供給管と多孔散気筒（チューブ型のメンブレンディフューザ）との接続部分の耐久性が高く、複数の多孔散気筒の水平位置合わせもできる散気装置を提供することを課題とする。 It is an object of the present invention to provide an air diffuser having high durability at a connection portion between an air supply pipe and a porous diffuser cylinder (tube-type membrane diffuser) and capable of horizontal alignment of a plurality of porous diffuser cylinders. .

本発明は、課題の解決手段として、下記の発明を提供する。
空気供給口(12)を有する空気供給管(10)と、空気供給管(10)の空気供給口(12)に接続された多孔散気筒(40)を有しており、空気供給管(10)と多孔散気筒(40)が取り付け具を使用して接続された散気装置(1)であって、
空気供給管(10)と多孔散気筒(40)を接続するための取り付け具が、樹脂製の筒状取り付け具(20)と金属製の板状取り付け具(30)の組み合わせからなるものであり、
樹脂製の筒状取り付け具(20)が、
外筒部(21)と、
外筒部(21)の一端側開口部側に形成された閉塞底面(22)を貫通して固定された中筒部(23)と、
中筒部(23)が配置された端部側に形成された空気供給管(10)の外表面に当接するための曲面状当接部(24)と、
曲面状当接部(24)の反対側開口部に形成された多孔散気筒(40)の接続部(25)を有しており、
金属製の板状取り付け具(30)が、中央部に筒状取り付け具(20)を通すための穴(31)を有しているものであり、
取り付け具を使用した空気供給管(10)と多孔散気筒(40)の接続部が、
空気供給管(10)の空気供給口(12)に筒状取り付け具(20)の中筒部(23)が差し込まれ、かつ空気供給管(10)の外表面に筒状取り付け具(20)の曲面状当接部(24)が当接された状態にて、
筒状取り付け具(20)の外筒部(21)に中央部の穴(31)を通すことで嵌め込まれた板状取り付け具(30)が、曲面状当接部(24)の外周面及び空気供給管(10)の外周面に沿って折り曲げられ、折り曲げられた状態の板状取り付け具(30)が固定手段にて空気供給管(10)に対して固定されており、
筒状取り付け具(20)の多孔散気筒の接続部(25)に多孔散気筒(40)が接続されている、散気装置(1)。 The present invention provides the following inventions as means for solving the problems.
An air supply pipe (10) having an air supply port (12) and a porous cylinder (40) connected to the air supply port (12) of the air supply pipe (10); ) And the porous diffuser cylinder (40) are connected using an attachment device (1),
The fixture for connecting the air supply pipe (10) and the perforated cylinder (40) is a combination of a plastic cylindrical fixture (20) and a metal plate fixture (30). ,
Resin cylindrical fitting (20)
The outer tube (21),
The middle cylinder part (23) fixed through the closed bottom surface (22) formed on the one end side opening part side of the outer cylinder part (21),
A curved contact portion (24) for contacting the outer surface of the air supply pipe (10) formed on the end side where the middle tube portion (23) is disposed;
It has a connection part (25) of the porous dust cylinder (40) formed in the opening opposite to the curved contact part (24),
The metal plate-like fixture (30) has a hole (31) for passing the cylindrical fixture (20) in the center,
The connection between the air supply pipe (10) using the fixture and the porous dust cylinder (40)
The middle cylinder portion (23) of the cylindrical attachment (20) is inserted into the air supply port (12) of the air supply pipe (10), and the cylindrical attachment (20) is formed on the outer surface of the air supply pipe (10). In the state where the curved contact portion (24) is in contact,
The plate-shaped fixture (30) fitted by passing the central hole (31) through the outer cylindrical portion (21) of the cylindrical fixture (20) is the outer peripheral surface of the curved contact portion (24) and Folded along the outer peripheral surface of the air supply pipe (10), the bent plate-like fixture (30) is fixed to the air supply pipe (10) by fixing means,
An air diffuser (1) in which a porous diffuser cylinder (40) is connected to a connection portion (25) of the porous diffuser cylinder of a cylindrical attachment (20).

本発明の散気装置では、空気供給管と多孔散気筒とを接続するための取り付け具として樹脂製の筒状取り付け具と金属製の板状取り付け具の組み合わせが使用されており、空気供給管に接する内側に樹脂製の筒状取り付け具が配置され、外側に金属製の板状取り付け具が配置されている。
このため、空気供給管に対する取り付け具の固定強度が高く、同じ取り付け位置を維持できることから、取り付け具に複数本の多孔散気筒を接続したとき、全ての多孔散気筒を同じ水平方向位置（生物処理槽の底面から同じ高い位置）に維持することができる。
また、本発明の散気装置は、前記取り付け具を使用した接続部の耐久性が高く、長期間散気運転を継続した場合であっても前記接続部が破損することがない。 In the air diffuser of the present invention, a combination of a resin cylindrical attachment and a metal plate attachment is used as an attachment for connecting the air supply pipe and the porous diffusion cylinder, and the air supply pipe A plastic cylindrical attachment is arranged on the inner side in contact with the metal, and a metal plate-like attachment is arranged on the outer side.
For this reason, the fixing strength of the fixture to the air supply pipe is high and the same mounting position can be maintained. Therefore, when a plurality of porous dust cylinders are connected to the fixture, all porous dust cylinders are placed in the same horizontal position (biological treatment The same high position from the bottom of the tank).
Moreover, the diffuser of this invention has the high durability of the connection part using the said fixture, and the said connection part is not damaged even if it is a case where aeration operation is continued for a long period of time.

本発明の散気装置の斜視図。The perspective view of the diffuser of this invention. （ａ）は、本発明の散気装置で使用する筒状取り付け具の側面図（一部断面図）、（ｂ）は、（ａ）の正面図。(A) is a side view (partial cross-sectional view) of a cylindrical attachment used in the air diffuser of the present invention, and (b) is a front view of (a). 本発明の散気装置で使用する板状取り付け具の一実施形態を示す斜視図。The perspective view which shows one Embodiment of the plate-shaped fixture used with the air diffusing device of this invention. （ａ）は、本発明の散気装置で使用する板状取り付け具の他実施形態を示す平面図、（ｂ）は（ａ）の側面図。(A) is a top view which shows other embodiment of the plate-shaped attachment used with the diffuser of this invention, (b) is a side view of (a). 本発明の散気装置の組立説明図。The assembly explanatory drawing of the diffuser of the present invention. 本発明の散気装置の側面図（但し、板状取り付け具の固定前）であり、１対の多孔散気筒を配置したもの。It is a side view (however, before fixing a plate-shaped attachment) of the air diffuser of the present invention, in which a pair of porous air diffusion cylinders are arranged. 本発明の散気装置の側面図（但し、板状取り付け具の固定前）であり、１本の多孔散気筒を配置したもの。It is a side view (however, before fixing a plate-shaped attachment) of the air diffusion apparatus of this invention, and arrange | positions one porous air diffusion cylinder. 板状取り付け具の締め付け状態を示す平面図。The top view which shows the clamping | tightening state of a plate-shaped fixture.

＜散気装置１＞
本発明の散気装置１は、図１に示すように、樹脂製乃至は金属製の空気供給管１０が有している複数の空気供給口１２に対して、取り付け具を介して多孔散気筒（チューブ型のメンブレンディフューザ）４０が接続されている。空気供給管１０には、外部の空気源から送風するための樹脂製乃至は金属製の送風管１１が接続されている。 <Air diffuser 1>
As shown in FIG. 1, the air diffuser 1 of the present invention has a porous air diffusion cylinder via a fixture for a plurality of air supply ports 12 included in a resin or metal air supply pipe 10. A (tube-type membrane diffuser) 40 is connected. The air supply pipe 10 is connected to a resin or metal blower pipe 11 for blowing air from an external air source.

多孔散気筒４０は公知のものであり、特許文献１の図１に示されたようなチューブ型のメンブレンディフューザを使用することができ、その他、ダイセン・メンブレン・システムズ株式会社から販売されているＰＭＤ−Ｔシリーズ、例えばＰＭＤ−Ｔ０６（６１０Ｌ、７６２Ｌ、１０００Ｌ）、ＰＭＤ−Ｔ１０Ｓ（５００Ｌ、７６２Ｌ、１０００Ｌ）を使用することができる。 The perforated powder cylinder 40 is a known one, and a tube type membrane diffuser as shown in FIG. 1 of Patent Document 1 can be used. In addition, PMD sold by Daisen Membrane Systems Co., Ltd. -T series such as PMD-T06 (610L, 762L, 1000L), PMD-T10S (500L, 762L, 1000L) can be used.

多孔散気筒４０は、適用する生物処理槽の大きさや散気能力等に応じて本数や配置状態を適宜調整することができる。例えば、空気供給管１０の両側の対称位置に同数の多孔散気筒４０を配置する形態、空気供給管１０の一方の側のみに多孔散気筒４０を配置する形態、空気供給管１０の両側に長さ方向に互い違いの位置に多孔散気筒４０を配置する形態等にすることができる。
なお、図１では、空気供給口１２を示すため、空気供給口１２に多孔散気筒４０が接続していない部分も残した状態で示している。 The number and arrangement state of the porous diffusion cylinders 40 can be appropriately adjusted according to the size of the biological treatment tank to be applied, the air diffusion capacity, and the like. For example, a form in which the same number of porous cylinders 40 are arranged at symmetrical positions on both sides of the air supply pipe 10, a form in which the porous powder cylinders 40 are arranged only on one side of the air supply pipe 10, For example, the porous dust cylinders 40 may be arranged at alternate positions in the vertical direction.
In FIG. 1, in order to show the air supply port 12, the air supply port 12 is shown with a portion where the porous cylinder 40 is not connected.

＜取り付け具＞
散気装置１において、空気供給管１０と多孔散気筒４０を接続するための取り付け具は、樹脂製の筒状取り付け具２０と金属製の板状取り付け具３０(１３０)の組み合わせからなるものである。
筒状取り付け具２０は、塩化ビニル樹脂、ＡＢＳ樹脂、ポリオレフィン（ポリエチレン、ポリプロピレン等）、ポリエステル等の合成樹脂製のものにすることができ、板状取り付け具３０（１３０）はステンレス製やアルミニウム製が好ましい。 <Mounting tool>
In the air diffuser 1, the attachment for connecting the air supply pipe 10 and the porous diffusion cylinder 40 is a combination of a resin tubular attachment 20 and a metal plate attachment 30 (130). is there.
The cylindrical attachment 20 can be made of a synthetic resin such as vinyl chloride resin, ABS resin, polyolefin (polyethylene, polypropylene, etc.), polyester, etc., and the plate attachment 30 (130) is made of stainless steel or aluminum. Is preferred.

樹脂製の筒状取り付け具２０は、図２（ａ）、（ｂ）に示すようなものであり、外筒部２１、中筒部２３、曲面状当接部２４及び多孔散気筒４０への接続部２５を有している。図２（ａ）は、中筒部２３が確認できるように、外筒部２１の一部を取り除いた状態で示しています。
外筒部２１は、大径外筒部２１ａと小径外筒部２１ｂからなっているが、多孔散気筒４０との接続のし易さの観点から、同一径のものにしてもよいし、３つ以上の径の異なる部分からなるものにしてもよい。
外筒部２１の一端側開口部側には閉塞底面２２が形成されており、閉塞底面２２を貫通して、中筒部２３が固定されている。中筒部２３は、空気供給管１０の空気供給口１２に嵌め込まれる。
中筒部２３が配置された端部側には、空気供給管１０の外表面に当接するための曲面状当接部２４が形成されている。
さらに曲面状当接部２４の反対側開口部には、多孔散気筒４０の接続部２５が形成されている。接続部２５の形状及び構造は、多孔散気筒４０の接続部の形状及び構造に対応した構造のものである。多孔散気筒４０の接続部４１（図５参照）が外表面に雄ねじ部を有していれば、接続部２５は、前記雄ねじ部をねじ込み可能な大きさ及び形状の雌ねじ部からなるものにする。 The resin cylindrical attachment 20 is as shown in FIGS. 2A and 2B, and is attached to the outer cylinder portion 21, the middle cylinder portion 23, the curved contact portion 24, and the porous dust cylinder 40. A connection part 25 is provided. FIG. 2A shows a state in which a part of the outer cylinder portion 21 is removed so that the middle cylinder portion 23 can be confirmed.
Although the outer cylinder part 21 consists of the large diameter outer cylinder part 21a and the small diameter outer cylinder part 21b, from a viewpoint of the ease of connection with the porous powder cylinder 40, you may make it the thing of the same diameter. It may be composed of two or more parts having different diameters.
A closed bottom surface 22 is formed on the one end side opening side of the outer tube portion 21, and the middle tube portion 23 is fixed through the closed bottom surface 22. The middle cylinder portion 23 is fitted into the air supply port 12 of the air supply pipe 10.
A curved contact portion 24 for contacting the outer surface of the air supply pipe 10 is formed on the end side where the middle cylinder portion 23 is disposed.
Further, a connecting portion 25 of the porous cylinder 40 is formed at the opening opposite to the curved contact portion 24. The shape and structure of the connecting portion 25 is a structure corresponding to the shape and structure of the connecting portion of the porous dust cylinder 40. If the connection part 41 (see FIG. 5) of the porous cylinder 40 has a male thread part on the outer surface, the connection part 25 is made of a female thread part having a size and a shape that allows the male thread part to be screwed. .

金属製の板状取り付け具３０は、図３に示すようなものであり、中央部には筒状取り付け具２０の外筒部２１に嵌め込むための穴３１が形成されている。穴３１は、外筒部２１を通すことができ、曲面状当接部２４は通すことができない大きさ及び形状のものである。 The metal plate-like attachment tool 30 is as shown in FIG. 3, and a hole 31 for fitting into the outer cylinder part 21 of the tubular attachment tool 20 is formed in the center part. The hole 31 is of a size and shape that allows the outer cylinder portion 21 to pass therethrough and the curved contact portion 24 cannot pass.

別実施形態の金属製の板状取り付け具１３０は、図４（ａ）、（ｂ）に示すようなものである。中央部には筒状取り付け具２０の外筒部２１に嵌め込むための穴１３１が形成されている。穴１３１は、外筒部２１を通すことができ、曲面状当接部２４は通すことができない大きさ及び形状のものである。
板状取り付け具１３０は、さらに長さ方向の両端部１３０ａ、１３０ｂ側において締め付け手段と組み合わせて固定するための固定補助部を有している点が図３の板状取り付け具３０とは異なっている。 The metal plate-like mounting tool 130 of another embodiment is as shown in FIGS. 4 (a) and 4 (b). A hole 131 for fitting into the outer cylinder part 21 of the cylindrical attachment 20 is formed in the center part. The hole 131 is of a size and shape that allows the outer cylinder portion 21 to pass therethrough and the curved contact portion 24 cannot pass.
The plate-like fixture 130 is different from the plate-like fixture 30 in FIG. 3 in that the plate-like fixture 130 further includes a fixing auxiliary portion for fixing in combination with the fastening means on both ends 130a and 130b in the length direction. Yes.

固定補助部は、長さ方向の両端部１３０ａ、１３０ｂのそれぞれにおいて幅方向に形成されたトンネル状の外壁１３２、１３３で形成された差し込み孔１３４，１３５であり、トンネル状の外壁１３２、１３３の少なくとも一部が切り取られたものである。図４では、トンネル状の外壁１３２は２箇所が切り取られており（切り取り部１４１、１４２）、トンネル状の外壁１３３は２箇所が切り取られている（切り取り部１４３、１４４）。 The fixing auxiliary portions are insertion holes 134 and 135 formed by tunnel-like outer walls 132 and 133 formed in the width direction at both end portions 130a and 130b in the length direction. At least part of it is cut out. In FIG. 4, two portions of the tunnel-shaped outer wall 132 are cut out (cut portions 141 and 142), and two portions of the tunnel-shaped outer wall 133 are cut (cut portions 143 and 144).

＜散気装置１の空気供給管への多孔散気筒の取り付け構造及び組立方法＞
図５は、散気装置１を分解した状態を示す図であり、散気装置１の組立方法を示す図でもある。図６は、図５に示す状態から散気装置１を組み立てたときの正面図である。以下、組立方法により説明する。 <Attachment structure and assembly method of porous diffuser cylinder to air supply pipe of air diffuser 1>
FIG. 5 is a diagram illustrating a state where the air diffuser 1 is disassembled, and is also a diagram illustrating an assembling method of the air diffuser 1. FIG. 6 is a front view of the air diffuser 1 assembled from the state shown in FIG. Hereinafter, the assembly method will be described.

空気供給管１０の空気供給口１２に対して、筒状取り付け具２０の中筒部２３を差し込む。このとき、曲面状当接部２４は、空気供給管１０の外周面に当接された状態になっている。
この状態のまま、板状取り付け具１３０を曲面状当接部２４の外周面と空気供給管１０の外周面の両方に沿わせるように折り曲げる（図６参照）。
図６は、２つの多孔散気筒４０が、図１に示すように２つの多孔散気筒４０ａ、４０ｂの配置した実施形態を示しており、図７は、図１に示すように１つの多孔散気筒４０ｃを配置した実施形態を示している。 The middle cylinder portion 23 of the cylindrical attachment 20 is inserted into the air supply port 12 of the air supply pipe 10. At this time, the curved contact portion 24 is in contact with the outer peripheral surface of the air supply pipe 10.
In this state, the plate-like fixture 130 is bent so as to follow both the outer peripheral surface of the curved contact portion 24 and the outer peripheral surface of the air supply pipe 10 (see FIG. 6).
FIG. 6 shows an embodiment in which two porous cylinders 40 are arranged as shown in FIG. 1, and two porous cylinders 40a and 40b are arranged as shown in FIG. 1, and FIG. 7 shows one porous dispersion cylinder as shown in FIG. An embodiment in which a cylinder 40c is arranged is shown.

図６及び図７では、図４で示す板状取り付け具１３０を使用した形態を示しているが、図３で示す板状取り付け具３０を使用することもできる。
図６に示す実施形態では、一対の板状取り付け具１３０の差し込み孔１３４と差し込み孔１３５が近接する位置（例えば、間隔が１〜１０ｃｍ程度）になるように、空気供給管１０と板状取り付け具１３０の長さが調整されている。
なお、図４で示す板状取り付け具１３０を使用したとき、図６では、２つの差し込み孔１３４同士及び２つの差し込み孔１３５同士が近接する位置になるようにしても同じである。
図７に示す実施形態では、一つの板状取り付け具１３０の差し込み孔１３４、１３５が近接する位置（例えば、間隔が１〜１０ｃｍ程度）になるように、空気供給管１０と板状取り付け具１３０の長さが調整されている。 6 and 7 show a form using the plate-like fixture 130 shown in FIG. 4, the plate-like fixture 30 shown in FIG. 3 can also be used.
In the embodiment shown in FIG. 6, the air supply pipe 10 and the plate-like attachment are arranged so that the insertion hole 134 and the insertion hole 135 of the pair of plate-like attachment tools 130 are close to each other (for example, the interval is about 1 to 10 cm). The length of the tool 130 is adjusted.
In addition, when the plate-shaped attachment tool 130 shown in FIG. 4 is used, even if it makes the two insertion holes 134 and the two insertion holes 135 close to each other in FIG.
In the embodiment shown in FIG. 7, the air supply pipe 10 and the plate-like fixture 130 are arranged so that the insertion holes 134 and 135 of one plate-like fixture 130 are close to each other (for example, the interval is about 1 to 10 cm). The length of has been adjusted.

図６に示す状態において板状取り付け具１３０を固定する。なお、板状取り付け具３０を使用した場合には、リング状の締め付け具、金属バンド等によって板状取り付け具３０の上から締め付けることで、板状取り付け具３０と曲面状当接部２４を一緒に締め付けて固定する。 In the state shown in FIG. 6, the plate-like fixture 130 is fixed. When the plate-like attachment tool 30 is used, the plate-like attachment tool 30 and the curved contact portion 24 are joined together by tightening from above the plate-like attachment tool 30 with a ring-shaped fastening tool, a metal band or the like. Tighten to and fix.

図８により締め付け方法を説明する。
板状取り付け具１３０の長さ方向の端部１３０ａ側に形成されたトンネル状の差し込み孔１３４に対してボルト（棒状部材）５０が差し込まれており、ボルト５５をねじ込むことで差し込み孔１３４に対して固定されている。
板状取り付け具１３０の長さ方向の端部１３０ｂ側（端部１３０ａとは反対側）に形成されたトンネル状の差し込み孔１３５に対してボルト（棒状部材）６０が差し込まれており、ボルト６５をねじ込むことで差し込み孔１３５に対して固定されている。 The tightening method will be described with reference to FIG.
A bolt (rod-like member) 50 is inserted into a tunnel-like insertion hole 134 formed on the end 130 a in the length direction of the plate-shaped attachment 130, and the bolt 55 is screwed into the insertion hole 134. Is fixed.
A bolt (rod-like member) 60 is inserted into a tunnel-like insertion hole 135 formed on the end portion 130 b side (the opposite side to the end portion 130 a) in the length direction of the plate-shaped attachment 130. Is fixed with respect to the insertion hole 135 by screwing.

ボルト５０は幅方向に２つの貫通孔５１、５２を有しており、それぞれ端部１３０ａ側の切り取り部１４１、１４２に位置している。
ボルト６０は幅方向に２つの貫通孔６１、６２を有しており、それぞれ端部１３０ｂ側の切り取り部１４３、１４４に位置している。 The bolt 50 has two through holes 51 and 52 in the width direction, and is positioned at the cutout portions 141 and 142 on the end portion 130a side, respectively.
The bolt 60 has two through holes 61 and 62 in the width direction, and is located at the cutout portions 143 and 144 on the end portion 130b side, respectively.

ボルト５０の貫通孔５１とボルト６０の貫通孔６１にまたがって、ボルト７１が貫通されており、突出部７１ａ（図８ではボルト５０側であるが、ボルト６０側でもよい）にはナット７３がねじ込まれている。
ボルト５０の貫通孔５２とボルト６０の貫通孔６２にまたがって、ボルト７２が貫通されており、突出部７２ａ（図８ではボルト５０側であるが、ボルト６０側でもよい）にはナット７４がねじ込まれている。
図８の状態にて、ナット７３とナット７４をねじ込んで行くと、図６に示す２枚の板状取り付け具１３０の差し込み孔１３４、１３５の間隔が短くなり、対となる２枚の板状取り付け具１３０と２つの曲面状当接部２４が締め付けられることで、筒状取り付け具２０の空気供給管１０に対する固定強度が高められる。 A bolt 71 is passed through the through hole 51 of the bolt 50 and the through hole 61 of the bolt 60, and a nut 73 is provided on the projecting portion 71a (which is on the bolt 50 side in FIG. 8 but may be on the bolt 60 side). Screwed.
A bolt 72 extends through the through hole 52 of the bolt 50 and the through hole 62 of the bolt 60, and a nut 74 is provided on the protrusion 72 a (on the bolt 50 side in FIG. 8, but may be on the bolt 60 side). Screwed.
When the nut 73 and the nut 74 are screwed in the state of FIG. 8, the distance between the insertion holes 134 and 135 of the two plate-like attachments 130 shown in FIG. By fastening the fixture 130 and the two curved contact portions 24, the fixing strength of the cylindrical fixture 20 with respect to the air supply pipe 10 is increased.

散気装置１では、１つの筒状取り付け具２０は、その中筒部２３と曲面状当接部２４の２つの作用によって空気供給管１０に対して位置決めされると共に、図８に示すように板状取り付け具１３０の近接する差し込み孔同士を締め付けることで、前記位置決め状態を維持したまま、強く固定されている。
このため、筒状取り付け具２０の水平方向への位置合わせが容易にかつ確実にできることから、筒状取り付け具２０に接続された複数の多孔散気筒４０の水平方向への位置合わせも確実にできるようになる。 In the air diffuser 1, one cylindrical attachment 20 is positioned with respect to the air supply pipe 10 by two actions of the middle cylindrical portion 23 and the curved contact portion 24, and as shown in FIG. 8. By tightening the insertion holes adjacent to each other in the plate-like attachment tool 130, the plate-like attachment tool 130 is firmly fixed while maintaining the positioning state.
For this reason, it is possible to easily and reliably align the cylindrical mounting tool 20 in the horizontal direction. Therefore, it is also possible to reliably align the plurality of porous dust cylinders 40 connected to the cylindrical mounting tool 20 in the horizontal direction. It becomes like this.

本発明の散気装置１は、筒状取り付け具２０と板状取り付け具３０（１３０）の組み合わせからなる取り付け具を使用していることから、複数の多孔散気筒４０の水平レベルを同じすることができるため、生物処理槽内にて使用したとき、生物処理槽内をより均一に散気することができるようになる。 Since the air diffuser 1 according to the present invention uses an attachment composed of a combination of the tubular attachment 20 and the plate attachment 30 (130), the horizontal levels of the plurality of porous diffusion cylinders 40 are the same. Therefore, when used in the biological treatment tank, the inside of the biological treatment tank can be diffused more uniformly.

１散気装置
１０空気供給管
１１送風管
１２空気供給口
２０筒状取り付け具
３０、１３０板状取り付け具
４０多孔散気筒 DESCRIPTION OF SYMBOLS 1 Air diffuser 10 Air supply pipe 11 Blower pipe 12 Air supply port 20 Tubular attachment 30, 130 Plate attachment 40 Porous diffuser cylinder

Claims

An air supply pipe (10) having an air supply port (12) and a porous cylinder (40) connected to the air supply port (12) of the air supply pipe (10); ) And the porous diffuser cylinder (40) are connected using an attachment device (1),
The fixture for connecting the air supply pipe (10) and the perforated cylinder (40) is a combination of a plastic cylindrical fixture (20) and a metal plate fixture (30). ,
Resin cylindrical fitting (20)
The outer tube (21),
The middle cylinder part (23) fixed through the closed bottom surface (22) formed on the one end side opening part side of the outer cylinder part (21),
A curved contact portion (24) for contacting the outer surface of the air supply pipe (10) formed on the end side where the middle tube portion (23) is disposed;
It has a connection part (25) of the porous dust cylinder (40) formed in the opening opposite to the curved contact part (24),
The metal plate-like fixture (30) has a hole (31) for passing the cylindrical fixture (20) in the center,
The connection between the air supply pipe (10) using the fixture and the porous dust cylinder (40)
The middle cylinder portion (23) of the cylindrical attachment (20) is inserted into the air supply port (12) of the air supply pipe (10), and the cylindrical attachment (20) is formed on the outer surface of the air supply pipe (10). In the state where the curved contact portion (24) is in contact,
The plate-shaped fixture (30) fitted by passing the central hole (31) through the outer cylindrical portion (21) of the cylindrical fixture (20) is connected to the outer peripheral surface of the curved contact portion (24) and Folded along the outer peripheral surface of the air supply pipe (10), the bent plate-like fixture (30) is fixed to the air supply pipe (10) by fixing means,
An air diffuser (1) in which a porous diffuser cylinder (40) is connected to a connection portion (25) of the porous diffuser cylinder of a cylindrical attachment (20).

An air supply pipe (10) having an air supply port (12) and a porous cylinder (40) connected to the air supply port (12) of the air supply pipe (10); ) And the porous diffuser cylinder (40) are connected using an attachment device (1),
The fitting for connecting the air supply pipe (10) and the perforated cylinder (40) is a combination of a plastic cylindrical fitting (20) and a metal plate fitting (130). ,
Metal plate attachment (130)
It has a hole (131) for passing through the cylindrical fitting (20) in the center,
Furthermore, it has a fixing auxiliary part for fixing in combination with the fastening means on both ends (130a, 130b) side in the length direction,
The fixing auxiliary portions are insertion holes (134, 135) formed by tunnel-shaped outer walls (132, 133) formed in the width direction on both end sides in the length direction, and the tunnel-shaped outer walls (132, 133) is at least partly cut out,
The connection part of the air supply pipe (10) using the cylindrical attachment (20) and the plate attachment (130) and the porous scattering cylinder (40),
The middle tube portion (23) of the cylindrical attachment is inserted into the air supply port (12) of the air supply tube (10), and the curved contact portion of the tubular attachment is formed on the outer surface of the air supply tube (10). With (24) in contact,
The plate-like fixture (130) fitted by passing the central hole (131) through the outer cylindrical portion (21) of the cylindrical fixture has the outer peripheral surface of the curved contact portion (24) and the air supply pipe. Along the outer peripheral surface of (10), the tunnel-like insertion holes (134, 135) formed at both ends in the length direction are bent so as to be close to each other,
One or more through holes formed in the width direction for a total of two tunnel-shaped insertion holes (134, 135) formed at both ends (130a, 130b) in the length direction of the plate-shaped fixture (130) The rod-like member (50, 60) having (51, 52, 61, 62) has a tunnel-like outer wall (132) in which the through hole (51, 52, 61, 62) forms the insertion hole (134, 135). , 133) is inserted so that it is located in the cut-out part (141, 142, 143, 144),
The projecting part (71a, 72a) of the bolt (71, 72) penetrating the through hole (51, 52, 61, 62) of the two rod-like members (50, 60) is the nut (73, 74). plate fitting by being clamped (130) and the tubular fitting (20) is fixed to the air supply pipe (10), diffuser air device (1).