JPH0611077Y2 - Venting of semipermeable membrane module - Google Patents
Venting of semipermeable membrane moduleInfo
- Publication number
- JPH0611077Y2 JPH0611077Y2 JP14400287U JP14400287U JPH0611077Y2 JP H0611077 Y2 JPH0611077 Y2 JP H0611077Y2 JP 14400287 U JP14400287 U JP 14400287U JP 14400287 U JP14400287 U JP 14400287U JP H0611077 Y2 JPH0611077 Y2 JP H0611077Y2
- Authority
- JP
- Japan
- Prior art keywords
- screw
- air vent
- vent hole
- semipermeable membrane
- membrane module
- 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 - Lifetime
Links
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- Self-Closing Valves And Venting Or Aerating Valves (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Description
【考案の詳細な説明】 〔産業上の利用分野〕 本考案は、半透膜モジュールの空気抜き構造に関し、さ
らに詳細には、Ｏ−リング等のパッキングを使用しない
半透膜モジュールの空気抜構造に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to an air vent structure for a semipermeable membrane module, and more particularly to an air vent structure for a semipermeable membrane module that does not use packing such as an O-ring. .
半透膜モジュールにおいて、半透膜で隔離された液体内
で発生した気体や原液供給時にモジュール内に混入した
気体は、半透膜表面に蓄積して半透膜の実効膜面積を減
少させることが知られている。このため、半透膜モジュ
ールに適当な空気抜機能を備えて液体内の空気を適宜排
出させる必要がある。In the semipermeable membrane module, the gas generated in the liquid separated by the semipermeable membrane or the gas mixed in the module at the time of supplying the undiluted liquid accumulates on the surface of the semipermeable membrane to reduce the effective membrane area of the semipermeable membrane. It has been known. For this reason, the semipermeable membrane module needs to have an appropriate air venting function to appropriately discharge the air in the liquid.
従来、このような空気抜を行うために、ケーシングに第
５図(A)に示した様な空気抜構造を備えた半透膜モジュ
ールが知られている。図示した空気抜構造は、ケーシン
グ壁部に設けられた空気抜孔１と螺子２とからなり、螺
子２が空気抜孔１の内壁の軸方向に延在した螺子孔部３
に螺合している。このような空気抜構造において、螺子
２を所定の位置に締込みその先端部の溝11に挿着された
Ｏ−リング５の外周部をケーシング壁部に押しつけるこ
とにより空気抜孔１を密閉し、螺子２をさらに締め込ん
でＯ−リング５をケーシング壁部から開放することでケ
ーシング内部の空気を排出していた。Conventionally, there has been known a semipermeable membrane module in which a casing has an air venting structure as shown in FIG. 5 (A) in order to perform such air venting. The illustrated air vent structure includes an air vent hole 1 and a screw 2 provided in a casing wall portion, and a screw hole portion 3 in which the screw 2 extends in the axial direction of the inner wall of the air vent hole 1.
It is screwed to. In such an air vent structure, the air vent hole 1 is sealed by tightening the screw 2 at a predetermined position and pressing the outer peripheral portion of the O-ring 5 inserted into the groove 11 at the tip thereof against the casing wall portion, The air inside the casing was discharged by further tightening the screw 2 and opening the O-ring 5 from the casing wall.
また、第５図(B)に示したようにＯ−リング等のパッキ
ングが螺子２の根元に挿着されたタイプの空気抜構造も
知られている。Further, as shown in FIG. 5 (B), an air vent structure of a type in which a packing such as an O-ring is inserted and attached at the base of the screw 2 is also known.
しかしながら、上記のような構造において、同図(A)に
示すようなＯ−リングの挿着用に形成された溝11や同図
(B)に示したようなケーシング壁部と螺子２の外周部に
よって形成されるＯ−リング近傍の微小空間は、ケーシ
ング内空間との流通が極めて悪いため、通常行われるモ
ジュール内の減菌や洗浄では細菌等の不純物が除去され
ていないことがあった。この結果、時間の経過とともに
上記の不純物等は、徐々にモジュール内の液体に拡散し
てモジュールを汚染させるという重大な問題を引き起こ
していた。However, in the structure as described above, the groove 11 and the figure formed in the insertion of the O-ring as shown in FIG.
The minute space near the O-ring formed by the casing wall portion and the outer peripheral portion of the screw 2 as shown in (B) is extremely poor in communication with the casing inner space, so that sterilization or sterilization in the module which is normally performed is avoided. Impurities such as bacteria were not sometimes removed by washing. As a result, with the passage of time, the above impurities and the like gradually diffuse into the liquid in the module to cause a serious problem of contaminating the module.
特に、モジュール内で圧力変動がある場合は、Ｏ−リン
グ等のパッキングの変形や溝内での移動によってパッキ
ング近傍の流体の流動が生じるため、上記の問題は顕著
であった。In particular, when there is a pressure fluctuation in the module, the above-mentioned problem is remarkable because the deformation of the packing such as the O-ring or the movement in the groove causes a fluid flow near the packing.
ところで、金属部材同士を高い気密性を維持しながら接
合できる方法として、上記のようなＯ−リング等のパッ
キングを用いず、先端部がテーパー状の金属部材同士を
圧接することで接続部の気密性を保つ方法が知られてい
る。この方法は、金属部材同士の接触面積を小さくする
ことにより小さな力で高い圧接力を発生させ、部材の接
触部の変形により両部材の気密な接合を達成するもので
ある。By the way, as a method of joining metal members while maintaining high airtightness, the airtightness of the connecting portion is achieved by pressing metal members having tapered tip portions without using the packing such as the O-ring as described above. It is known how to maintain sex. In this method, the contact area between the metal members is reduced to generate a high pressure contact force with a small force, and the contact portion of the members is deformed to achieve airtight joining of both members.
しかし、圧接する部材が互いに同程度の硬度を有する金
属であれば、圧接部が傷ついたり塑性変形し易く、本考
案のように圧接と開放を繰り返す用途には気密性を維持
するうえで不向きである。However, if the members to be pressure-contacted are metals having the same hardness as each other, the pressure-contacted portion is likely to be damaged or plastically deformed, which is not suitable for maintaining airtightness for repeated press-contacting and opening applications as in the present invention. is there.
そこで、本考案は、Ｏ−リング等のパッキングを使用せ
ず、しかも空気抜の繰り返し操作に適した半透膜モジュ
ールの空気抜を提供することを目的とする。Therefore, an object of the present invention is to provide an air vent for a semipermeable membrane module that does not use packing such as an O-ring and is suitable for repeated air vent operations.
本考案者等は上記の問題点を解決すべく鋭意検討した結
果、モジュールのケーシングよりも実質的に硬度が低い
材料で成型された螺子を使用し、気密性を維持する接合
部をテーパー状に形成することにより、Ｏ−リング等の
パッキングが不要でしかも繰り返し操作に適した空気抜
構造を開発することに成功した。As a result of diligent studies to solve the above problems, the present inventors have used a screw molded of a material having a hardness substantially lower than that of the casing of the module, and taper the joint that maintains airtightness. By forming it, we succeeded in developing an air vent structure that does not require packing such as an O-ring and is suitable for repeated operations.
即ち、本考案は螺子孔部を備え半透膜モジュールのケー
シング内外を連通する空気抜孔と、該螺子孔に螺合しか
つケーシング材より硬度の低い材料から成形された螺子
とからなり、 該空気抜孔と該螺子先端部にはそれぞれテーパー部を設
け、螺子締込み時に一方のテーパー部の一部が他方のテ
ーパー部の一部に圧接して空気抜孔を密閉することを特
徴とする半透膜モジュールの空気抜を提供するものであ
る。That is, the present invention comprises an air vent hole which has a screw hole portion and communicates with the inside and outside of the casing of a semipermeable membrane module, and a screw which is screwed into the screw hole and formed from a material having a hardness lower than that of the casing material. A semipermeable membrane characterized in that a taper portion is provided on each of the vent hole and the tip of the screw, and when the screw is tightened, a part of one taper portion is brought into pressure contact with a part of the other taper portion to seal the air vent hole. It is intended to provide air bleeding for the module.
本考案において、空気抜孔の開放時に孔の有効開孔面積
を高め空気の流通をよくするために、空気抜孔の螺子孔
部が軸方向の全長に亘って螺子山を一部欠いた構造であ
ることが好ましい。In the present invention, in order to increase the effective opening area of the air vent hole and improve the air flow when the air vent hole is opened, the screw hole portion of the air vent hole has a structure in which a screw thread is partially cut off along the entire axial length. It is preferable.
または、上記と同様の目的で、本考案の半透膜モジュー
ルの空気抜に使用する螺子が軸方向の全長に亘って螺子
山を一部欠いた構造であることが好ましい。Alternatively, for the same purpose as described above, the screw used for venting the semipermeable membrane module of the present invention preferably has a structure in which a part of the screw thread is cut off along the entire axial length.
以下、本考案を実施例により具体的に説明するが、本考
案はこれらに何等限定されない。Hereinafter, the present invention will be described in detail with reference to Examples, but the present invention is not limited thereto.
実施例１ ポリエーテルサルホン中空糸限外濾過膜を、ポリサルホ
ン（ＵＣＣ社製ユーデル）ケーシングに収納し、エポキ
シ接着剤により濾過膜の端部をケーシングに封着した。Example 1 A polyether sulfone hollow fiber ultrafiltration membrane was placed in a polysulfone (Udel manufactured by UCC) casing, and the end of the filtration membrane was sealed to the casing with an epoxy adhesive.
このような半透膜モジュールのケーシング壁面上に第１
図(A)に示すような空気抜構造を設けた。第１図(A)の空
気抜構造は、ケーシングに形成された空気抜孔１と空気
抜孔１を開閉する螺子２からなり、空気抜孔１の内壁に
は孔の軸方向に沿って同軸上に、螺子２と螺合する螺子
孔部３およびテーパー部４がそれぞれ形成されている。On the wall surface of the casing of such a semipermeable membrane module, the first
An air vent structure as shown in FIG. The air vent structure of FIG. 1 (A) is composed of an air vent hole 1 formed in a casing and a screw 2 for opening and closing the air vent hole 1. The inner wall of the air vent hole 1 is coaxial with the axial direction of the hole, A screw hole portion 3 and a taper portion 4 which are screwed with the screw 2 are formed.
螺子２は、その先端部に螺子軸と同軸上にテーパー部６
を有し、テーパー部６の末端部の直径は空気抜孔１のテ
ーパー部４の開放端の直径よりも大きい。このような螺
子２は、空気抜孔１のポリサルホンよりも硬度の低いポ
リエチレンあるいはポリプロピレンにより成型されてい
る。The screw 2 has a taper portion 6 at the tip thereof coaxially with the screw shaft.
And the diameter of the end portion of the tapered portion 6 is larger than the diameter of the open end of the tapered portion 4 of the air vent hole 1. The screw 2 is formed of polyethylene or polypropylene having a hardness lower than that of the polysulfone in the air vent hole 1.
このような空気抜構造において、螺子２を所定の位置ま
で締込むことにより、螺子２に設けられたテーパー部６
の末端円周部を空気抜孔に設けられたテーパー部４のテ
ーパー面上に圧接させて空気抜孔１の連通を密閉する。
第１図(B)に、螺子先端部に設けられたテーパー部６の
末端円周部12を空気抜孔に設けられたテーパー部４のテ
ーパー面上に圧接させた状態の拡大断面図を示す。In such an air vent structure, the taper portion 6 provided on the screw 2 is tightened by tightening the screw 2 to a predetermined position.
The end circumferential portion of (1) is pressed against the taper surface of the tapered portion 4 provided in the air vent hole to seal the communication of the air vent hole 1.
FIG. 1 (B) is an enlarged cross-sectional view showing a state in which the terminal circumferential portion 12 of the taper portion 6 provided at the screw tip portion is pressed against the taper surface of the taper portion 4 provided at the air vent hole.
逆に、同図(A)に示した螺子２を緩めることにより、空
気抜孔１のテーパー部４から螺子２の先端部が離れ、空
気抜孔１を開放することができる。On the contrary, by loosening the screw 2 shown in FIG. 1A, the tip of the screw 2 is separated from the tapered portion 4 of the air vent hole 1 and the air vent hole 1 can be opened.
このような空気抜構造の気密性を試験するために、モジ
ュール内に加圧ガスを送り込み、螺子２の密閉および開
放を20回繰り返した。その後モジュール内に外部と３kg
/cm2の圧力差の加圧ガスを保持した後、モジュール内の
圧力変化を測定したところ３kg/cm2の圧力差であり気密
性を維持していた。In order to test the airtightness of such an air vent structure, pressurized gas was fed into the module and the screw 2 was closed and opened 20 times. 3kg externally inside the module
After holding the pressurized gas having a pressure difference of / cm 2 , the pressure change in the module was measured and found to be 3 kg / cm 2 and the airtightness was maintained.
さらに、このような空気抜構造を使用したモジュールの
雑菌除去性について試験するために、モジュールを３％
ホルマリン水で２日間充填保持し、滅菌した後、無菌の
純水を透過側から供給して洗浄した。Furthermore, in order to test the module using such an air vent structure for the removal of various bacteria, the module was
After filling and holding with formalin water for 2 days and sterilizing, aseptic pure water was supplied from the permeation side to wash.
次いで、ホルマリン濃度を10ppm以下にした後、１週間
放置して生菌検査を行ったところ生菌は０ケ／ｄであ
った。Then, the formalin concentration was adjusted to 10 ppm or less, and the cells were allowed to stand for 1 week for a viable cell test. As a result, the viable cell count was 0 / d.
実施例２ 濾過膜、ケーシング及び螺子について実施例１と同様な
材料を使用して、第２図(A)の断面図に示すような空気
抜構造を製造した。Example 2 The same materials as in Example 1 were used for the filtration membrane, the casing and the screw to manufacture an air vent structure as shown in the sectional view of FIG. 2 (A).
第２図(A)は、実施例１と同様に、空気抜孔１と空気抜
孔１を開閉する螺子２からなり、空気抜孔１の内壁には
孔の軸方向に沿って同軸上に、螺子２と螺合する螺子孔
部３およびテーパー部４がそれぞれ形成され、螺子２の
先端部に螺子軸と同軸上にテーパー部６を有する。2 (A), similar to the first embodiment, it comprises an air vent hole 1 and a screw 2 for opening and closing the air vent hole 1. The inner wall of the air vent hole 1 is coaxial with the screw 2 along the axial direction of the hole. A screw hole portion 3 and a taper portion 4 which are screwed with each other are formed, and a tip portion of the screw 2 has a taper portion 6 coaxially with the screw shaft.
本実施例においては、螺子２のテーパー部６の末端円周
部12の直径は空気抜孔１の内壁に設けられたテーパー部
４の開放端の直径よりも小さい。このため、圧接状態が
実施例１と異なり、第２図(B)の拡大断面図に示したよ
うに、空気抜孔１に形成されたテーパー部４の開放端円
周部13が螺子２のテーパー部６のテーパー面を圧接して
気密性を維持している。In the present embodiment, the diameter of the terminal circumferential portion 12 of the taper portion 6 of the screw 2 is smaller than the diameter of the open end of the taper portion 4 provided on the inner wall of the air vent hole 1. Therefore, the pressure contact state is different from that of the first embodiment, and as shown in the enlarged sectional view of FIG. Airtightness is maintained by pressing the tapered surface of the portion 6 together.
実施例３ 実施例１で作成した螺子２を用意し、螺子２が螺合する
空気抜孔として第３図に示すような空気抜孔を作成し
た。Example 3 The screw 2 prepared in Example 1 was prepared, and an air vent hole as shown in FIG. 3 was created as an air vent hole into which the screw 2 is screwed.
第３図は、実施例１で示したような空気抜孔１を螺子孔
部３の方向から見た正面図を示し、螺子孔部３の螺子山
７は内周上の一部に一対の切欠部８を有する。切欠部８
は、軸方向に螺子穴部の全長に亘って形成されている。FIG. 3 is a front view of the air vent hole 1 as shown in the first embodiment as seen from the direction of the screw hole portion 3. The screw thread 7 of the screw hole portion 3 has a pair of notches on a part of the inner circumference. It has a part 8. Notch 8
Are formed over the entire length of the screw hole in the axial direction.
このような切欠部８を備えることにより、空気抜孔１の
開放時に空気抜孔の有効開孔面積を高め空気の流通を向
上することができる。By providing the cutout portion 8 as described above, it is possible to increase the effective opening area of the air vent hole when the air vent hole 1 is opened, and improve the flow of air.
実施例４ 実施例１で使用した空気抜孔１と同様の空気抜孔を作成
し、螺子２として本実施例では、第４図に示したような
螺子を使用している。Example 4 An air vent hole similar to the air vent hole 1 used in Example 1 was created, and as the screw 2, in the present embodiment, a screw as shown in FIG. 4 is used.
第４図は螺子２を螺子先端部の方向から見た正面図であ
り、螺子山９の外周上の一部に一対の切欠部10を備え
る。切欠部10は、軸方向に螺子２の全長に亘って形成さ
れている。FIG. 4 is a front view of the screw 2 as seen from the direction of the tip of the screw, and is provided with a pair of notches 10 on a part of the outer circumference of the screw thread 9. The notch 10 is formed over the entire length of the screw 2 in the axial direction.
このような切欠部10を備えることにより、空気抜孔の開
放時に孔の有効開孔面積を高め空気の流通を向上するこ
とができる。By providing such a notch portion 10, it is possible to increase the effective opening area of the air vent hole when opening the air vent hole and improve the air circulation.
本考案の半透膜モジュールの空気抜によれば、パッキン
グを使用した場合のようにモジュール内の液体を汚染す
ることがなく、しかも、空気抜孔の開閉により接合部を
傷つけないため、繰り返し使用によっても気密性を維持
することができる。The air vent of the semi-permeable membrane module of the present invention does not contaminate the liquid in the module as in the case of using packing, and furthermore, the opening and closing of the air vent hole does not damage the joint, so that it can be used repeatedly. Can also maintain airtightness.
また、過度の使用により気密性が低下した場合は、螺子
を交換するだけで足りる。Further, if the airtightness is lowered due to excessive use, it is sufficient to replace the screw.
さらに、密閉するために大きな圧力を必要とせず空気抜
の操作性においても優れるという利点を有するFurthermore, it has the advantage that it does not require a large pressure for sealing and is excellent in air operability.
第１図(A)は、本考案の半透膜モジュールの空気抜の一
具体例の断面図であり、同図(B)はその圧接部の拡大断
面図である。 第２図(A)は、本考案の半透膜モジュールの空気抜の別
の具体例の断面図であり、同図(B)はその圧接部の拡大
断面図である。 第３図は、本考案の半透膜モジュールの空気抜の一具体
例における空気抜孔の正面図である。 第４図は、本考案の半透膜モジュールの空気抜の一具体
例における螺子の正面図である。 第５図(A)及び(B)は、パッキングにＯ−リングを使用し
た従来の半透膜モジュールの空気抜構造の断面図であ
る。 〔主な参照番号〕 １……空気抜孔、２……螺子、 ３……螺子孔部、4,6……テーパー部、 ５……Ｏ−リング、7,9……螺子山、 8,10……切欠部、11……溝 12……末端円周部、 13……開放端円周部FIG. 1 (A) is a cross-sectional view of a specific example of air venting of the semipermeable membrane module of the present invention, and FIG. 1 (B) is an enlarged cross-sectional view of the pressure contact portion. FIG. 2 (A) is a cross-sectional view of another specific example of air venting of the semipermeable membrane module of the present invention, and FIG. 2 (B) is an enlarged cross-sectional view of the pressure contact portion. FIG. 3 is a front view of an air vent hole in a specific example of the air vent of the semipermeable membrane module of the present invention. FIG. 4 is a front view of a screw in a specific example of air venting of the semipermeable membrane module of the present invention. 5 (A) and 5 (B) are cross-sectional views of a conventional air vent structure of a semipermeable membrane module using an O-ring for packing. [Main reference numbers] 1 ... Air vent hole, 2 ... Screw, 3 ... Screw hole part, 4,6 ... Tapered part, 5 ... O-ring, 7, 9 ... Thread, 8,10 ...... Cutout, 11 ...... Groove 12 ...... End circumference, 13 ...... Open end circumference
Claims (3)
ング内外を連通する空気抜孔と、該螺子孔に螺合しかつ
ケーシング材より硬度の低い材料から成形された螺子と
からなり、 該空気抜孔と該螺子先端部にそれぞれテーパー部を設
け、螺子締込み時に一方のテーパー部の一部が他方のテ
ーパー部の一部に圧接して空気抜孔を密閉することを特
徴とする半透膜モジュールの空気抜。1. An air vent hole provided with a screw hole portion for communicating the inside and outside of a casing of a semipermeable membrane module, and a screw threaded into the screw hole and molded from a material having a hardness lower than that of a casing material. A semi-permeable membrane module characterized in that a taper portion is provided at each of the vent hole and the tip of the screw, and when the screw is tightened, a part of one taper portion is brought into pressure contact with a part of the other taper portion to seal the air vent hole. Deflated.
て螺子山を一部欠いた構造である実用新案登録請求の範
囲第１項記載の半透膜モジュールの空気抜。2. The air vent of the semipermeable membrane module according to claim 1, wherein the screw hole portion of the air vent hole has a structure in which a screw thread is partially cut off over the entire length in the axial direction.
欠いた構造である実用新案登録請求の範囲第１項記載の
半透膜モジュールの空気抜。3. The air vent of a semipermeable membrane module according to claim 1, wherein the screw has a structure in which a screw thread is partially cut off along the entire length in the axial direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14400287U JPH0611077Y2 (en) | 1987-09-21 | 1987-09-21 | Venting of semipermeable membrane module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14400287U JPH0611077Y2 (en) | 1987-09-21 | 1987-09-21 | Venting of semipermeable membrane module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6448104U JPS6448104U (en) | 1989-03-24 |
| JPH0611077Y2 true JPH0611077Y2 (en) | 1994-03-23 |
Family
ID=31411325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14400287U Expired - Lifetime JPH0611077Y2 (en) | 1987-09-21 | 1987-09-21 | Venting of semipermeable membrane module |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0611077Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010078027A (en) * | 2008-09-25 | 2010-04-08 | Nagano Yuki Kk | Piping joint |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3804060B2 (en) | 2000-12-14 | 2006-08-02 | 株式会社安川電機 | Feedback control device |
-
1987
- 1987-09-21 JP JP14400287U patent/JPH0611077Y2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010078027A (en) * | 2008-09-25 | 2010-04-08 | Nagano Yuki Kk | Piping joint |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6448104U (en) | 1989-03-24 |
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