JP4056281B2 - Membrane diffuser using diffuser holder - Google Patents

Membrane diffuser using diffuser holder Download PDF

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Publication number
JP4056281B2
JP4056281B2 JP2002107251A JP2002107251A JP4056281B2 JP 4056281 B2 JP4056281 B2 JP 4056281B2 JP 2002107251 A JP2002107251 A JP 2002107251A JP 2002107251 A JP2002107251 A JP 2002107251A JP 4056281 B2 JP4056281 B2 JP 4056281B2
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Japan
Prior art keywords
diffuser
membrane
plate
holder
frame
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JP2002107251A
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Japanese (ja)
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JP2003300090A (en
Inventor
優治 川瀬
正夫 曽布川
昌和 栗田
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NGK Insulators Ltd
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NGK Insulators Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/10Biological treatment of water, waste water, or sewage

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  • Separation Using Semi-Permeable Membranes (AREA)
  • Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)

Description

【0001】
【発明の属する技術分野】
本発明は、下水処理場の曝気槽などで用いられる散気装置の改良に関するものであり、更に詳細には、既設の散気板ホルダーを利用したメンブレン散気装置に関するものである。
【0002】
【従来の技術】
下水処理場の曝気槽などには、図6に示すように四角形の散気板ホルダー1に多孔質セラミック製の散気板2を載せ、固定用金具3で固定した構造の散気装置が多数設置されているが、永年の使用により通気性が低下した散気板2をメンブレン(散気膜)に置き換えることが求められる場合がある。しかし従来のメンブレン散気装置は、多孔質セラミック製の散気板2とは全く構造が異なるため、その置き換えに際しては既設の散気板ホルダー1を全て撤去したうえ、新たにメンブレン散気装置を設置しなければならず、多くの工期と費用がかかり、また多くの廃棄物が発生するという問題があった。
【0003】
【発明が解決しようとする課題】
本発明は上記した従来の問題点を解決して、既設の散気板ホルダーを利用することによって、簡単かつ安価にメンブレンへの置き換えができるようにした散気板ホルダーを利用したメンブレン散気装置を提供するためになされたものである。
【0004】
【課題を解決するための手段】
上記の課題を解決するためになされた請求項1の発明は、外周に形成されるホルダー枠と、その内側に空気供給孔を備えた皿状底部とを連続して形成した四角形の散気板ホルダーの前記ホルダー枠にセラミック製散気板を載せて固定用金具で固定するようにした既設の散気装置を対象とし、四角形のメンブレンの外周を枠に固定し所定の張力を与えた状態のカートリッジ状のメンブレンを、前記既設の散気装置からセラミック製散気板を撤去した散気板ホルダーの皿状底部に装入し、その外周の枠の上面を枠状の押え冶具を介し、かつその枠状の押え冶具の厚さを調節し、セラミック製散気板を固定していた前記固定用金具で前記皿状底部に押し圧して固定するとともに、設置工事・改修工事に際し前記皿状底部に水を貯留しメンブレンの乾燥を防止可能としたことを特徴とするものである。
また同一の課題を解決するためになされた請求項2の発明は、外周に形成されるホルダー枠と、その内側に空気供給孔を備えた皿状底部とを連続して形成した四角形の散気板ホルダーとからなり、前記ホルダー枠にセラミック製散気板を載せて固定用金具で固定するようにした既設の散気装置を対象とし、前記散気板と同一サイズで裏面から表面への空気流路を備えた板状剛性体の上面にメンブレンを積層しその周囲のみを板状剛性体に固定したものを、前記既設の散気装置からセラミック製散気板を撤去した散気板ホルダーのホルダー枠に載せ、セラミック製散気板を固定していた前記固定用金具で固定するとともに、散気停止時に前記メンブレンを前記板状剛性体の上面で支承可能としたことを特徴とするものである。
【0005】
更に同一の課題を解決するためになされた請求項3の発明は、外周に形成されるホルダー枠と、その内側に空気供給孔を備えた皿状底部とを連続して形成した四角形の散気板ホルダーとからなり、前記ホルダー枠にセラミック製散気板を載せて固定用金具で固定するようにした既設の散気装置を対象とし、四角形のメンブレンを空気流路を貫通させた底板の上に配置し、その周囲を枠に固定したカートリッジ状のメンブレンを、前記既設の散気装置からセラミック製散気板を撤去した散気板ホルダーのホルダー枠に載せ、枠状の押え治具を用い、かつその枠状の押え冶具の厚さを調節して、セラミック製散気板を固定していた前記固定用金具でそのカートリッジ状のメンブレンの外周部をホルダー枠に押し圧して固定するとともに、散気停止時に前記メンブレンを前記底板の上面で支承可能としたことを特徴とするものである。
【0006】
上記したいずれの発明のメンブレン散気装置も、既設の散気板ホルダーと散気板の固定用金具をそのまま利用してメンブレンを取り付けたものであるから、簡単かつ安価にメンブレンへの置き換えを行なうことができる。
以下に各発明の好ましい実施形態を示す。
【0007】
【発明の実施の形態】
(請求項1の発明)
図1において1は既設の四角形の散気板ホルダーであり、皿状底部4の周囲上部にはホルダー枠5が形成されている。図示ように、外周に形成されるホルダー枠5と、その内側に、空気供給孔15を備えた皿状底部4とを連続して形成した四角形の散気板ホルダー1とからなり、前記ホルダー枠5にセラミック製散気板を載せて固定用金具3で固定するようにした既設の散気装置を対象とし、この実施形態では、散気板ホルダー1に固定されていた既設の散気板を取り外し、周囲に枠6とパッキン7とを備えたカートリッジ状のメンブレン8を散気板ホルダーの皿状底部4に装入して取り付ける。
【0008】
枠6は既存の散気板ホルダー皿状底部と縦横の寸法が同一のものであって、例えば28cm×28cmの金属製である。樹脂またはゴム製のメンブレン8は所定の張力を与えた状態で周囲をこの枠6に固定されている。固定方法は特に限定されるものではなく、たとえば図2Aに示すように枠6にメンブレン8の端部を溶着する方法、図2Bに示すようにメンブレン8の端部を枠6に巻き付けて固定する方法、図2Cに示すようにメンブレン8の端部にビード9を一体に形成しておき、枠6の溝10にこのビード9を嵌め込んで押え枠11で固定する方法など、様々な方法を採用することができる。
【0009】
パッキン7も枠6の下面に一体に設けておけば、全体がカートリッジ状に一体化されるので、これを図1のように散気板ホルダー1の皿状底部4内に装入し、その上面を枠状の押え冶具12を介して固定用金具3で固定する。この固定用金具3としては、既設の散気板固定用金具をそのまま用いることができる。カートリッジ状のメンブレン8の厚みは既設の散気板よりも薄く、しかも皿状底部4内に装入されるのでその上面高さは既設の散気板よりも低くなるが、枠状の押え冶具12の厚みを大きくして既設の固定用金具3で固定できるようにすることが好ましい。なお既設の固定用金具3は断面コ字状の金具13とボルト14により構成されているので、ボルト14の締め付け代によって多少の厚さの差は吸収することができる。
【0010】
このように構成された請求項1の発明のメンブレン散気装置は、従来と同様に皿状底部4の中央に形成された空気供給孔15から圧縮空気を供給すれば、圧縮空気はメンブレン8の下部の空間に入り、メンブレン8を膨らませながら散気することができる。また散気停止時には水圧によってメンブレン8は皿状底部4に押し付けられるが、メンブレン8と皿状底部4との距離は近いのでメンブレン8が変形したり破損したりすることはない。更に、皿状底部4内に水を貯めておけば設置工事・改修工事の際にメンブレン8が乾燥することもなく、メンブレン性能の劣化を容易に防止することができる。
【0011】
(請求項2の発明)
図3は請求項2の発明の実施形態を示す断面図である。この実施形態では、空気供給孔15を備えた散気板ホルダー1を用いた、先の実施形態と同じ既設の散気装置を対象として、従来の散気板の代わりに、従来の散気板と同一サイズの剛性体20の上面にメンブレン8を固定したものを用いる。剛性体20の材質は任意であるが、この実施形態では合成木材として市販されているガラス長繊維強化発泡体を用いた。この材料は軽量で耐食性があり、従来から散気板ホルダー1の盲蓋として使用実績のある材料である。剛性体20には裏面から表面への空気流路21を形成しておく。メンブレン8は周囲のみを剛性体20に固定しておくものとする。剛性体20へのメンブレン8の固定方法は溶着のみとしてもよいが、溶着した上から枠で押さえても、溶着したメンブレン8の端部を剛性体20の側面に適宜の金具で固定してもよい。
【0012】
このように剛性体20の上面にメンブレン8を固定したものを、パッキン22を挟んで散気板ホルダー1のホルダー枠5に載せ、固定用金具3で固定する。そして、従来と同様に皿状底部4の中央に形成された空気供給孔15から圧縮空気を供給すれば、圧縮空気は剛性体20の空気流路21を通じてメンブレン8と剛性体20との間に入り、メンブレン8を膨らませながら散気することができる。また散気停止時にも、メンブレン8は剛性体20の上面で支えられるので変形したり破損したりすることがない。更にこの構造は、剛性体20とメンブレン8の大きさを図3の紙面と垂直方向に自由に拡大できるので、既設の散気板ホルダー1を使いながら実質的な発泡面積を広げることができる。
【0013】
【0014】
【0015】
請求項3の発明)
図5は請求項3の発明の実施形態を示す断面図である。この実施形態では、空気供給孔15を備えた散気板ホルダー1を用いた、先の実施形態と同じ既設の散気装置を対象として、底板30上に固定したメンブレン8を、散気板ホルダー1のホルダー枠5にパッキン33を介して載せ、固定用金具3で固定するが、この実施形態では、枠状の押え冶具34を用いて高さを調整し、既設の散気板用の固定用金具3が使えるようにした。
また、底板30には空気流路32を貫通させておく。この散気装置も、従来と同様に皿状底部の中央に形成された空気供給孔15から圧縮空気を供給すれば、圧縮空気は底板30の空気流路32を通じてメンブレン8と底板30との間に入り、メンブレン8を膨らませながら散気することができる。また散気停止時にも、メンブレン8は底板30の上面に密着して支えられるので、変形したり破損したりすることがない。
【0016】
【発明の効果】
以上に説明したように、本願各発明のメンブレン散気装置は、既設の散気板ホルダーおよび固定用金具をそのまま利用したものであるから、メンブレンへの置き換えを簡単に行なうことができ、工事期間も短縮することができる。また既設の散気板ホルダーやその配管等を撤去する必要がないため、廃棄物の発生量も減少させることができる。しかもメンブレンは散気停止時における変形や破損が確実に防止され、専用のメンブレン散気装置と同様の機能を発揮することができる。
【図面の簡単な説明】
【図1】請求項1の発明の実施形態を示す断面図である。
【図2】メンブレン端部の固定方法を示す断面図である。
【図3】請求項2の発明の実施形態を示す断面図である。
【図4】請求項3の発明の実施形態を示す断面図である。
【図5】従来例を示す断面図である。
【符号の説明】
1 散気板ホルダー、2 従来の散気板、3 固定用金具、4 皿状底部、5 ホルダー枠、6 枠、7 パッキン、8 メンブレン、9 ビード、10 枠の溝、11 押え枠、12 枠状の押え冶具、13 断面コ字状の金具、14 ボルト、15 空気供給孔、20 散気板と同一サイズの剛性体、21 空気流路、30 底板、31 断面コの字状の枠、32 空気流路、33 パッキン、34 枠状の押え冶具
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an improvement of an air diffuser used in an aeration tank of a sewage treatment plant, and more particularly to a membrane air diffuser using an existing air diffuser plate holder.
[0002]
[Prior art]
In an aeration tank of a sewage treatment plant, as shown in FIG. 6, there are many air diffusers having a structure in which a porous air diffuser plate 2 is mounted on a square air diffuser plate holder 1 and fixed with fixing metal fittings 3. Although it is installed, it may be required to replace the diffuser plate 2 whose air permeability has been lowered due to long-term use with a membrane (a diffuser membrane). However, since the structure of the conventional membrane diffuser is completely different from the porous ceramic diffuser plate 2, the existing diffuser plate holder 1 is completely removed when replacing the membrane diffuser. There is a problem that it has to be installed, which requires a lot of construction time and cost, and generates a lot of waste.
[0003]
[Problems to be solved by the invention]
The present invention solves the above-mentioned conventional problems, and uses an existing diffuser plate holder, whereby a membrane diffuser using a diffuser plate holder that can be easily and inexpensively replaced with a membrane. It was made to provide.
[0004]
[Means for Solving the Problems]
The invention of claim 1 has been made in order to solve the aforementioned problem, a holder frame which is formed on the outer circumference, square formed by continuously and dished bottom with a air supply hole to the inside air diffuser The target is an existing diffuser with a ceramic diffuser plate mounted on the holder frame of the plate holder and fixed with fixing brackets, and the outer periphery of the rectangular membrane is fixed to the frame and given tension. The cartridge-shaped membrane was inserted into the dish-shaped bottom of the diffuser plate holder from which the ceramic diffuser plate was removed from the existing diffuser, and the upper surface of the outer peripheral frame was inserted through a frame-shaped presser jig . and by adjusting the thickness of the frame-shaped fixing jig, together with pressure and fixed pressing to the said dish shaped bottom portion with fixing clasp that secured the ceramic diffuser air plate, the dish upon installation work and repair work Water at the bottom of the membrane It is characterized in that which enables preventing燥.
The invention of claim 2 has been made to solve the same problem, a holder frame which is formed on the outer periphery, dusting square formed by continuously and dished bottom with a air supply holes on the inside It is intended for existing diffusers that consist of an air plate holder, and a ceramic diffuser plate is mounted on the holder frame and fixed with fixing metal fittings. A diffuser plate holder in which a membrane is laminated on the upper surface of a plate-like rigid body having an air flow path and only the periphery thereof is fixed to the plate-like rigid body, and the ceramic diffuser plate is removed from the existing diffuser The ceramic diffuser plate is fixed on the holder frame and fixed with the fixing bracket, and the membrane can be supported on the upper surface of the plate-like rigid body when the diffuser is stopped. It is.
[0005]
Furthermore the invention of claim 3 has been made to solve the same problem, dispersion of a holder frame which is formed on the outer periphery, and formed continuously with the dish-shaped bottom portion with a air supply holes on the inside square A bottom plate with a rectangular membrane penetrating the air flow path, intended for an existing diffuser device that consists of a gas plate holder and a ceramic diffuser plate mounted on the holder frame and fixed with a fixing bracket. Place the cartridge-shaped membrane, which is placed on the top and fixed to the frame, on the holder frame of the diffuser plate holder from which the ceramic diffuser plate has been removed from the existing diffuser. used, and by adjusting the thickness of the frame-shaped fixing jig, with pressure to fix pressing an outer peripheral portion of the cartridge-like membrane at the fixing brackets that secured the ceramic diffuser air plate holder frame , Stop aeration It is characterized in that the membrane was capable supported by the upper surface of the bottom plate.
[0006]
Since the membrane diffuser of any of the inventions described above is a membrane attached using the existing diffuser plate holder and the metal fitting for fixing the diffuser plate as they are, the membrane diffuser can be easily and inexpensively replaced with the membrane. be able to.
Preferred embodiments of each invention are shown below.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
(Invention of Claim 1)
In FIG. 1, reference numeral 1 denotes an existing quadrangular diffuser plate holder, and a holder frame 5 is formed on the upper periphery of the dish-shaped bottom 4. Illustrated so on, a holder frame 5 formed on the outer periphery, on the inside, consists diffuser plate holder 1 Tokyo rectangle formed by continuously and dished bottom 4 equipped with air supply holes 15, the holder Targeted is an existing diffuser device in which a ceramic diffuser plate is mounted on a frame 5 and fixed by a fixing bracket 3. In this embodiment, an existing diffuser plate fixed to the diffuser plate holder 1 is used. And a cartridge-like membrane 8 having a frame 6 and a packing 7 around it is inserted into the dish-like bottom 4 of the diffuser plate holder and attached.
[0008]
The frame 6 has the same vertical and horizontal dimensions as the existing diffuser plate holder dish-shaped bottom, and is made of, for example, a metal of 28 cm × 28 cm. The periphery of the membrane 8 made of resin or rubber is fixed to the frame 6 with a predetermined tension applied. The fixing method is not particularly limited. For example, the end of the membrane 8 is welded to the frame 6 as shown in FIG. 2A, and the end of the membrane 8 is wound around the frame 6 and fixed as shown in FIG. 2B. As shown in FIG. 2C, various methods such as forming a bead 9 integrally at the end of the membrane 8 and fitting the bead 9 in the groove 10 of the frame 6 and fixing it with the presser frame 11 are used. Can be adopted.
[0009]
If the packing 7 is also provided integrally on the lower surface of the frame 6, the whole is integrated into a cartridge shape, and this is inserted into the dish-shaped bottom portion 4 of the diffuser plate holder 1 as shown in FIG. The upper surface is fixed by the fixing bracket 3 through the frame-shaped presser jig 12. As the fixing metal fitting 3, an existing diffuser plate fixing metal fitting can be used as it is. The cartridge-like membrane 8 is thinner than the existing diffuser plate and is inserted into the dish-like bottom 4 so that the height of the upper surface is lower than that of the existing diffuser plate. It is preferable to increase the thickness of 12 so that it can be fixed with the existing fixing bracket 3. In addition, since the existing fixing metal fitting 3 is composed of a metal fitting 13 having a U-shaped cross section and a bolt 14, a slight thickness difference can be absorbed by the tightening allowance of the bolt 14.
[0010]
The membrane air diffuser of the invention of claim 1 configured as described above can supply compressed air from the membrane 8 by supplying compressed air from the air supply hole 15 formed in the center of the dish-like bottom portion 4 as in the prior art. The air can enter the lower space and diffuse while the membrane 8 is inflated. Further, when the aeration is stopped, the membrane 8 is pressed against the dish-like bottom 4 by water pressure. However, since the distance between the membrane 8 and the dish-like bottom 4 is short, the membrane 8 is not deformed or damaged. Further, if water is stored in the dish-shaped bottom portion 4, the membrane 8 does not dry during the installation work / renovation work, and deterioration of the membrane performance can be easily prevented.
[0011]
(Invention of Claim 2)
FIG. 3 is a sectional view showing an embodiment of the invention of claim 2. In this embodiment, a conventional diffuser plate is used in place of the conventional diffuser plate for the same existing diffuser device as in the previous embodiment using the diffuser plate holder 1 provided with the air supply holes 15. The membrane 8 is fixed to the upper surface of the rigid body 20 having the same size as the above. The material of the rigid body 20 is arbitrary, but in this embodiment, a long glass fiber reinforced foam commercially available as synthetic wood was used. This material is lightweight and corrosion-resistant, and has been used as a blind cover for the diffuser plate holder 1 conventionally. An air flow path 21 from the back surface to the front surface is formed in the rigid body 20. It is assumed that only the periphery of the membrane 8 is fixed to the rigid body 20. The method of fixing the membrane 8 to the rigid body 20 may be only welding. However, the membrane 8 may be pressed with a frame from the welded position, or the end of the welded membrane 8 may be fixed to the side surface of the rigid body 20 with an appropriate metal fitting. Good.
[0012]
In this way, the membrane 8 fixed to the upper surface of the rigid body 20 is placed on the holder frame 5 of the diffuser plate holder 1 with the packing 22 interposed therebetween, and fixed with the fixing bracket 3. And if compressed air is supplied from the air supply hole 15 formed in the center of the dish-shaped bottom part 4 as in the prior art, the compressed air passes between the membrane 8 and the rigid body 20 through the air flow path 21 of the rigid body 20. The air can be diffused while the membrane 8 is inflated. Further, even when the aeration is stopped, the membrane 8 is supported by the upper surface of the rigid body 20, so that it is not deformed or damaged. Furthermore, since this structure can freely increase the size of the rigid body 20 and the membrane 8 in the direction perpendicular to the paper surface of FIG. 3, the substantial foaming area can be expanded while using the existing diffuser plate holder 1.
[0013]
[0014]
[0015]
(Invention of Claim 3 )
FIG. 5 is a sectional view showing an embodiment of the invention of claim 3 . In this embodiment, the membrane 8 fixed on the bottom plate 30 is used for the same existing diffuser as in the previous embodiment using the diffuser plate holder 1 provided with the air supply holes 15. placed over the first holder frame 5 in the packing 33, but is fixed by the fixing bracket 3, in the embodiment of this, using a frame-shaped fixing jig 34 to adjust the height, for existing diffuser air plate The fixing bracket 3 can be used.
An air flow path 32 is passed through the bottom plate 30. Also in this air diffuser, if compressed air is supplied from the air supply hole 15 formed in the center of the dish-like bottom portion as in the conventional case, the compressed air passes between the membrane 8 and the bottom plate 30 through the air flow path 32 of the bottom plate 30. The air can be diffused while the membrane 8 is inflated. In addition, since the membrane 8 is supported in close contact with the upper surface of the bottom plate 30 even when the aeration is stopped, the membrane 8 is not deformed or damaged.
[0016]
【The invention's effect】
As described above, since the membrane diffuser of each invention of the present application uses the existing diffuser plate holder and the fixing bracket as they are, it can be easily replaced with the membrane, and the construction period Can also be shortened. Moreover, since it is not necessary to remove the existing diffuser plate holder and its piping, the amount of waste generated can be reduced. In addition, the membrane is reliably prevented from being deformed or damaged when the aeration is stopped, and can perform the same function as a dedicated membrane aeration device.
[Brief description of the drawings]
1 is a cross-sectional view showing an embodiment of the invention of claim 1;
FIG. 2 is a cross-sectional view showing a method for fixing a membrane end.
FIG. 3 is a sectional view showing an embodiment of the invention of claim 2;
4 is a cross-sectional view showing an embodiment of the invention of claim 3. FIG.
FIG. 5 is a cross-sectional view showing a conventional example.
[Explanation of symbols]
1 Diffuser holder, 2 Conventional diffuser plate, 3 Fixing bracket, 4 Dish bottom, 5 Holder frame, 6 frame, 7 Packing, 8 Membrane, 9 Bead, 10 Frame groove, 11 Presser frame, 12 frame Presser jig, 13 U-shaped bracket, 14 bolt, 15 air supply hole, 20 rigid body of the same size as the diffuser plate, 21 air flow path, 30 bottom plate, 31 U-shaped frame in cross section, 32 Air flow path, 33 packing, 34 Frame-shaped presser jig

Claims (3)

外周に形成されるホルダー枠と、その内側に空気供給孔を備えた皿状底部とを連続して形成した四角形の散気板ホルダーの前記ホルダー枠にセラミック製散気板を載せて固定用金具で固定するようにした既設の散気装置を対象とし、四角形のメンブレンの外周を枠に固定し所定の張力を与えた状態のカートリッジ状のメンブレンを、前記既設の散気装置からセラミック製散気板を撤去した散気板ホルダーの皿状底部に装入し、その外周の枠の上面を枠状の押え冶具を介し、かつその枠状の押え冶具の厚さを調節し、セラミック製散気板を固定していた前記固定用金具で前記皿状底部に押し圧して固定するとともに、設置工事・改修工事に際し前記皿状底部に水を貯留しメンブレンの乾燥を防止可能としたことを特徴とする散気板ホルダーを利用したメンブレン散気装置。A holder frame which is formed on the outer periphery, fixing put the ceramic diffuser air plate to the holder frame diffuser plate holder square formed by continuously and dished bottom with a air supply holes on the inside Targeting an existing diffuser that is fixed with metal fittings, a cartridge-like membrane in a state in which the outer periphery of a rectangular membrane is fixed to a frame and given a predetermined tension is applied to the ceramic diffuser from the existing diffuser. Insert the bottom plate of the diffuser plate holder with the air plate removed , and adjust the thickness of the frame-shaped presser jig on the upper surface of the outer frame through the frame-shaped presser jig . The fixing bracket that fixed the diffuser plate was pressed and fixed to the dish-shaped bottom part, and water was stored in the dish-shaped bottom part during installation work / renovation work to prevent drying of the membrane. Features a diffuser plate holder Use the membrane air diffuser. 外周に形成されるホルダー枠と、その内側に空気供給孔を備えた皿状底部とを連続して形成した四角形の散気板ホルダーとからなり、前記ホルダー枠にセラミック製散気板を載せて固定用金具で固定するようにした既設の散気装置を対象とし、前記散気板と同一サイズで裏面から表面への空気流路を備えた板状剛性体の上面にメンブレンを積層しその周囲のみを板状剛性体に固定したものを、前記既設の散気装置からセラミック製散気板を撤去した散気板ホルダーのホルダー枠に載せ、セラミック製散気板を固定していた前記固定用金具で固定するとともに、散気停止時に前記メンブレンを前記板状剛性体の上面で支承可能としたことを特徴とする散気板ホルダーを利用したメンブレン散気装置。Place a holder frame which is formed on the outer periphery, composed of a diffuser plate holder square formed by continuously and dished bottom with a air supply holes on the inside, a ceramic diffuser air plate to the holder frame The membrane is laminated on the upper surface of a plate-like rigid body having the same size as the diffuser plate and having an air flow path from the back surface to the front surface. The above-mentioned fixing, in which only the periphery is fixed to a plate-like rigid body is placed on the holder frame of a diffusion plate holder from which the ceramic diffusion plate is removed from the existing diffusion device, and the ceramic diffusion plate is fixed A membrane diffuser using a diffuser plate holder , wherein the membrane is fixed by a metal fitting, and the membrane can be supported on the upper surface of the plate-like rigid body when the diffuser is stopped . 外周に形成されるホルダー枠と、その内側に空気供給孔を備えた皿状底部とを連続して形成した四角形の散気板ホルダーとからなり、前記ホルダー枠にセラミック製散気板を載せて固定用金具で固定するようにした既設の散気装置を対象とし、四角形のメンブレンを空気流路を貫通させた底板の上に配置し、その周囲を枠に固定したカートリッジ状のメンブレンを、前記既設の散気装置からセラミック製散気板を撤去した散気板ホルダーのホルダー枠に載せ、枠状の押え治具を用い、かつその枠状の押え冶具の厚さを調節して、セラミック製散気板を固定していた前記固定用金具でそのカートリッジ状のメンブレンの外周部をホルダー枠に押し圧して固定するとともに、散気停止時に前記メンブレンを前記底板の上面で支承可能としたことを特徴とする散気板ホルダーを利用したメンブレン散気装置。Place a holder frame which is formed on the outer periphery, composed of a diffuser plate holder square formed by continuously and dished bottom with a air supply holes on the inside, a ceramic diffuser air plate to the holder frame For the existing diffuser device that is fixed with a fixing bracket, a cartridge-like membrane in which a rectangular membrane is placed on the bottom plate that penetrates the air flow path and the periphery is fixed to a frame, The ceramic diffuser plate is removed from the existing diffuser and placed on the holder frame of the diffuser plate holder. A frame-shaped holding jig is used and the thickness of the frame-shaped holding jig is adjusted. The outer peripheral part of the cartridge-like membrane was pressed against the holder frame and fixed with the fixing bracket that fixed the air diffuser plate, and the membrane could be supported on the upper surface of the bottom plate when the air diffuser stopped. The Membrane air diffuser utilizing diffuser plate holder for the symptoms.
JP2002107251A 2002-04-10 2002-04-10 Membrane diffuser using diffuser holder Expired - Fee Related JP4056281B2 (en)

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JP4716805B2 (en) * 2005-06-23 2011-07-06 三菱電線工業株式会社 Porous membrane material and diffuser
JP4528219B2 (en) * 2005-07-08 2010-08-18 ダイセン・メンブレン・システムズ株式会社 Air diffuser
JP2007014899A (en) * 2005-07-08 2007-01-25 Daicen Membrane Systems Ltd Air diffusion device
KR101291238B1 (en) * 2010-11-11 2013-08-01 주식회사 그린기술산업 The membrane diffusers with function of preventing reverse flow into these diffusers
AT14362U1 (en) * 2014-05-02 2015-09-15 Aquaconsult Anlagenbau Gmbh Mounting device for a ventilation element and aerator of such a ventilation element
CN110776123B (en) * 2019-12-03 2022-09-09 中水净通(西藏)高原供水科技发展有限公司 Household water purifier convenient to dismantle

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US20130093106A1 (en) * 2010-06-07 2013-04-18 Invent Umwelt-Und Verfahrenstechnik Ag Device for gassing liquids
US9556047B2 (en) * 2010-06-07 2017-01-31 Invent Umwelt-Und Verfahrenstechnik Ag Device for gassing liquids

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