JPH0914572A - Anticorrosion core in pipe joint part - Google Patents
Anticorrosion core in pipe joint partInfo
- Publication number
- JPH0914572A JPH0914572A JP15658795A JP15658795A JPH0914572A JP H0914572 A JPH0914572 A JP H0914572A JP 15658795 A JP15658795 A JP 15658795A JP 15658795 A JP15658795 A JP 15658795A JP H0914572 A JPH0914572 A JP H0914572A
- Authority
- JP
- Japan
- Prior art keywords
- annular member
- end surface
- spigot
- tip end
- contact
- 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.)
- Pending
Links
Landscapes
- Joints With Sleeves (AREA)
- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、上水道や下水道の管路
の継手部、あるいは工業用水や薬液プラントの配管路の
継手部などに使用される管継手部の防食コアに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anticorrosion core for pipe joints used for joints of pipes for waterworks and sewers, or for pipes of industrial water and chemical plants.
【０００２】[0002]
【従来の技術】この種の管継手を備えた管を敷設する場
合においては、敷設場所の状況に応じて管の挿口側を適
宜に切断して、この管の長さを調節しなければならない
ことがある。このような切管を行った場合には、切断作
業によって新たな挿口の先端面が露出するため、継手部
内に防食コアを挿入して継手部内面、特に挿口先端面の
腐食を防止することが提案されている。2. Description of the Related Art In the case of laying a pipe having a pipe joint of this type, the length of the pipe must be adjusted by cutting the insertion side of the pipe appropriately according to the situation of the laying place. Sometimes it doesn't. When such a cutting tube is performed, the tip surface of a new insertion opening is exposed by the cutting work, so a corrosion-resistant core is inserted into the joint portion to prevent corrosion of the inner surface of the joint portion, especially the tip end surface of the insertion portion. Is proposed.
【０００３】図６，図８はこのような防食コアを実装し
た管継手部の断面構造を示すものである。図６におい
て、１，２は互いに接続される管であり、一方の管１の
挿口３が他方の管２の受口４に挿入されてこれらの管
１，２の挿口３と受口４とにより管継手部５が構成され
ている。６は管継手部５内に挿入された防食コアであ
り、この防食コア６は、図８に示すように、スチレンブ
タジエンゴムからなる筒状体７と、この筒状体７の中央
外周面に一体形成されたつば部８と、筒状体７の軸方向
に適宜間隔を隔てた複数箇所に筒状体７の外周面から外
方に向けて一体に突出形成された環状フィン９（９Ａ，
９Ｂ，９Ｃ，９Ｄ）とからなる。FIGS. 6 and 8 show the cross-sectional structure of a pipe joint portion on which such an anticorrosive core is mounted. In FIG. 6, reference numerals 1 and 2 denote pipes that are connected to each other, and the insertion opening 3 of one of the tubes 1 is inserted into the receiving opening 4 of the other tube 2 so that the insertion opening 3 and the receiving opening of these pipes 1 and 2 are connected to each other. The pipe joint portion 5 is constituted by 4 and. Reference numeral 6 denotes an anticorrosion core inserted into the pipe joint portion 5. The anticorrosion core 6 includes a tubular body 7 made of styrene-butadiene rubber and a central outer peripheral surface of the tubular body 7 as shown in FIG. The integrally formed collar portion 8 and the annular fins 9 (9A, 9A, 9A, 9A, 9A, 9A, 9B, 9A, 9B formed integrally with the outer circumferential surface of the tubular body 7 and projecting outward at a plurality of positions that are appropriately spaced in the axial direction of the tubular body 7.
9B, 9C, 9D).
【０００４】また、図６における１０は受口４の内周面
と挿口３の外周面との間に圧縮状態で設けられた環状の
シール材で、このシール材１０は受口４の内周面に形成
された溝部１１に配置される。Further, reference numeral 10 in FIG. 6 denotes an annular seal member provided between the inner peripheral surface of the receiving port 4 and the outer peripheral surface of the insertion port 3 in a compressed state. It is arranged in the groove portion 11 formed on the peripheral surface.
【０００５】図７に示すように、管１，２の挿口３と受
口４とを接続する際には、受口４の溝部１１にシール材
１０を予め嵌入させておく。そして、防食コア６の一端
側を管１の挿口３側の内部に圧入状態に挿入し、この管
１の挿口３を管２の受口４内に挿入する。これにより、
図７に示すように、防食コア６の他端側が管２の受口４
側の内部に圧入状態に挿入され、防食コア６は、互いに
接続される管１，２の受口４の内周面から挿口３の内周
面にわたって配置される。また、その内装状態におい
て、環状フィン９の先端部が受口４または挿口３の開口
端側へそれぞれ弾性変形しながら管１，２の内周面に圧
接される。As shown in FIG. 7, when the insertion ports 3 of the pipes 1 and 2 are connected to the receiving port 4, the sealing material 10 is fitted into the groove portion 11 of the receiving port 4 in advance. Then, one end side of the anticorrosion core 6 is inserted into the inside of the insertion opening 3 side of the tube 1 in a press-fitted state, and the insertion opening 3 of this tube 1 is inserted into the receiving opening 4 of the tube 2. This allows
As shown in FIG. 7, the other end of the anticorrosion core 6 is the receiving port 4 of the pipe 2.
The anticorrosion core 6 is press-fitted into the inside of the side, and is arranged from the inner peripheral surface of the receiving port 4 of the pipes 1 and 2 connected to each other to the inner peripheral surface of the insertion port 3. Further, in the interior state, the tips of the annular fins 9 are pressed against the inner peripheral surfaces of the pipes 1 and 2 while elastically deforming toward the opening end side of the receiving port 4 or the insertion port 3, respectively.
【０００６】なお、図６に示すように、環状フィン９の
うち、軸方向両端に位置する環状フィン９Ａ，９Ｄは、
その外端縁ほど筒状体７の中央部に位置するように傾斜
して形成されており、これにより、防食コア６の両端を
それぞれ管１，２に圧入状態に挿入させる作業を容易に
行うことができるようにされている。また、筒状体７に
おける両端側の環状フィン９Ａ，９Ｄと中央寄りの環状
フィン９Ｂ，９Ｃとの間にはそれぞれ空気抜き用孔部１
２が形成され、筒状体７の外周側空間と内周側空間とを
連通させることにより、環状フィン９Ａが管１の奥側に
反転したりすることが防止されている。As shown in FIG. 6, among the annular fins 9, the annular fins 9A and 9D located at both ends in the axial direction are
The outer edge is formed so as to be positioned closer to the center of the tubular body 7, so that both ends of the anticorrosion core 6 can be easily inserted into the pipes 1 and 2 in a press-fitted state. Has been made possible. Further, the air vent holes 1 are respectively provided between the annular fins 9A, 9D on both ends of the tubular body 7 and the annular fins 9B, 9C near the center.
2 is formed, and by connecting the outer peripheral side space and the inner peripheral side space of the tubular body 7 to each other, the annular fin 9A is prevented from being inverted to the inner side of the pipe 1.
【０００７】[0007]
【発明が解決しようとする課題】しかしながら、上記構
成の防食コア６によれば、防食コア６全体をその筒状の
形状を保持できるような材料で形成しているため、防食
コア６を管継手部５内に装着した際に、つば部８が挿口
３の先端面３ａに密着しないことがあり、その結果、挿
口３の先端面３ａの防食が不完全になってしまうという
問題を生じていた。However, according to the anticorrosion core 6 having the above structure, the anticorrosion core 6 is formed of a material capable of maintaining its tubular shape. The collar portion 8 may not come into close contact with the distal end surface 3a of the insertion opening 3 when it is mounted in the insertion portion 5, and as a result, there arises a problem that the corrosion prevention of the distal end surface 3a of the insertion opening 3 becomes incomplete. Was there.
【０００８】本発明は上記問題を解決するもので、挿口
の先端面を完全に防食することができる管継手部の防食
コアを提供することを目的とするものである。The present invention solves the above problems, and an object of the present invention is to provide an anticorrosion core for a pipe joint portion capable of completely anticorrosing the distal end surface of the insertion opening.
【０００９】[0009]
【課題を解決するための手段】上記問題を解決するため
に本発明は、管の挿口が他の管の受口内に挿入された際
に、これらで互いに接続される管の受口の内周面から挿
口の内周面にわたって配置される筒状体と、挿口が受口
に挿入されたときに受口の奥端面と挿口の先端面との間
に挟み込まれるつば部とが一体に形成され、このつば部
の挿口先端面に対向する面に、挿口の先端面に密着させ
る端面接触環状部材が配設されているものである。SUMMARY OF THE INVENTION In order to solve the above problems, the present invention relates to a pipe receiving port which is connected to each other when the pipe inserting port is inserted into another pipe receiving port. A cylindrical body arranged from the peripheral surface to the inner peripheral surface of the insertion opening, and a collar portion that is sandwiched between the rear end surface of the reception opening and the distal end surface of the insertion opening when the insertion opening is inserted into the reception opening. An end face contacting annular member that is formed integrally and faces the tip end surface of the insertion opening is provided on the surface of the flange portion that faces the tip end surface of the insertion opening.
【００１０】[0010]
【作用】上記構成により、つば部とは別に、挿口の先端
面に密接させる端面接触環状部材を設けたので、端面接
触環状部材として専ら密着性に優れた材料を採用するこ
とができ、挿口の先端面を確実に防食することができ
る。With the above construction, since the end face contacting annular member to be brought into close contact with the tip end face of the insertion opening is provided separately from the collar portion, it is possible to use a material having excellent adhesion as the end face contacting annular member. The tip end surface of the mouth can be surely protected from corrosion.
【００１１】[0011]
【実施例】以下、本発明の実施例を図面に基づき説明す
る。図１および図２はそれぞれ本発明の一実施例にかか
る防食コアを実装した管継手部の断面図、図３は同防食
コアの一部切欠正面図である。なお、従来と同機能のも
のには同符号を付して、その説明は省略する。Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 are cross-sectional views of a pipe joint portion in which an anticorrosion core according to an embodiment of the present invention is mounted, and FIG. 3 is a partially cutaway front view of the anticorrosion core. In addition, the same reference numerals are given to those having the same functions as the conventional ones, and the description thereof will be omitted.
【００１２】図１〜図３に示すように、防食コア６のつ
ば部８における挿口３の先端面３ａに対向する面にはブ
チルゴム製の端面接触環状部材２１が全周にわたって接
着され、この端面接触環状部材２１を挿口３の先端面３
ａに接触させるようになっている。この端面接触環状部
材２１の材料となるブチルゴムは未加硫または加硫のい
ずれのものでもよい。As shown in FIGS. 1 to 3, an end face contacting annular member 21 made of butyl rubber is adhered to the face of the flange portion 8 of the anticorrosion core 6 facing the tip face 3a of the insertion port 3 over the entire circumference. The end surface contact annular member 21 is attached to the front end surface 3 of the insertion port 3.
It is designed to come into contact with a. The butyl rubber used as the material for the end surface contact annular member 21 may be either unvulcanized or vulcanized.
【００１３】上記構成により、挿口３の先端面３ａに接
触させる端面接触環状部材２１をつば部８とは別に設け
て、この端面接触環状部材２１として専ら密着性に優れ
たブチルゴムを採用したため、図１に示すように、防食
コア６を管継手部５内に装着した際には、端面接触環状
部材２１が挿口３の先端面３ａに完全に密着し、管１，
２内に水道水などを通した場合でも挿口３の先端面３ａ
に水道水が接触することを確実に防止でき、防食性を向
上させることができる。With the above structure, the end face contacting annular member 21 to be brought into contact with the tip end face 3a of the insertion opening 3 is provided separately from the collar portion 8, and the end face contacting annular member 21 is made of butyl rubber having excellent adhesion. As shown in FIG. 1, when the anticorrosion core 6 is mounted in the pipe joint portion 5, the end surface contact annular member 21 is completely adhered to the tip end surface 3 a of the insertion opening 3, and the pipe 1,
Tip surface 3a of insertion port 3 even when tap water is passed through 2
It is possible to reliably prevent tap water from coming into contact with the water and improve the anticorrosion property.
【００１４】図４は本発明の他の実施例を示すもので、
この実施例においても上記実施例と同様な位置に同形状
の端面接触環状部材２２が配設されているが、この端面
接触環状部材２２は、発泡樹脂でなるスポンジで製造さ
れている。FIG. 4 shows another embodiment of the present invention.
In this embodiment as well, the end face contacting annular member 22 having the same shape is arranged at the same position as in the above embodiment, but this end face contacting annular member 22 is made of sponge made of foamed resin.
【００１５】この構成によると、防食コア６を管継手部
５内に装着した際に、端面接触環状部材２２が挿口３の
先端面３ａと防食コア６のつば部８との間で圧縮され
て、端面接触環状部材２２が挿口３の先端面３ａに完全
に密着し、上記実施例と同様に、管１，２内に水道水な
どを通した場合でも挿口３の先端面３ａに水道水が接触
することを端面接触環状部材２２により確実に防止でき
て、防食性を向上させることができる。According to this structure, when the anticorrosion core 6 is mounted in the pipe joint portion 5, the end surface contact annular member 22 is compressed between the tip surface 3a of the insertion opening 3 and the brim portion 8 of the anticorrosion core 6. Then, the end surface contact annular member 22 completely adheres to the tip surface 3a of the insertion opening 3, and even when tap water or the like is passed through the pipes 1 and 2, the tip surface 3a of the insertion opening 3 remains on the tip surface 3a. The contact of tap water can be reliably prevented by the end surface contact annular member 22, and the corrosion resistance can be improved.
【００１６】さらに、図５は本発明のその他の実施例を
示すもので、この実施例においても上記実施例と同様な
位置に同形状の端面接触環状部材２３が配設されている
が、この端面接触環状部材２３は、水に接触すると膨潤
する水膨潤性ゴムで製造されている。Further, FIG. 5 shows another embodiment of the present invention. In this embodiment, the end face contact annular member 23 having the same shape is arranged at the same position as in the above embodiment. The end surface contact annular member 23 is made of water-swelling rubber that swells when it comes into contact with water.
【００１７】この構成によると、防食コア６を管継手部
５内に装着した後、管１，２内に水道水などを通した際
に、端面接触環状部材２３が膨潤して挿口３の先端面３
ａに完全に密着し、挿口３の先端面３ａに水道水が接触
することを端面接触環状部材２３により確実に防止でき
て、防食性が向上する。According to this structure, when the anticorrosion core 6 is mounted in the pipe joint portion 5 and then tap water or the like is passed through the pipes 1 and 2, the end face contacting annular member 23 swells and the insertion port 3 of the insertion port 3 is swelled. Tip surface 3
The end face contacting annular member 23 can reliably prevent the tap water from coming into contact with the distal end face 3a of the insertion opening 3 and the corrosion resistance is improved.
【００１８】[0018]
【発明の効果】以上述べたように本発明によると、つば
部とは別に、挿口の先端面に密接させる端面接触環状部
材を設けることにより、端面接触環状部材として専ら密
着性に優れた材料を採用することができ、その結果、挿
口の先端面を確実に防食することができる。As described above, according to the present invention, by providing the end face contacting annular member which is brought into close contact with the distal end face of the insertion opening in addition to the collar portion, a material having excellent adhesion as the end face contacting annular member. Can be adopted, and as a result, the tip end surface of the insertion opening can be surely protected against corrosion.
【図１】本発明の一実施例の防食コアを用いて管継手を
接合した状態を示す一部切欠正面図である。FIG. 1 is a partially cutaway front view showing a state in which a pipe joint is joined using an anticorrosion core according to an embodiment of the present invention.
【図２】同防食コアを用いて管継手を接合する状態を示
す一部切欠正面図である。FIG. 2 is a partially cutaway front view showing a state in which a pipe joint is joined using the anticorrosion core.
【図３】同防食コアの一部切欠正面図である。FIG. 3 is a partially cutaway front view of the anticorrosion core.
【図４】本発明の他の実施例の防食コアの一部切欠正面
図である。FIG. 4 is a partially cutaway front view of an anticorrosion core according to another embodiment of the present invention.
【図５】本発明の他の実施例の防食コアの一部切欠正面
図である。FIG. 5 is a partially cutaway front view of an anticorrosion core according to another embodiment of the present invention.
【図６】従来の防食コアを用いて管継手を接合する状態
を示す一部切欠正面図である。FIG. 6 is a partially cutaway front view showing a state in which a pipe joint is joined using a conventional anticorrosion core.
【図７】同従来の防食コアを用いて管継手を接合した状
態を示す一部切欠正面図である。FIG. 7 is a partially cutaway front view showing a state in which a pipe joint is joined using the conventional anticorrosion core.
【図８】同従来の防食コアの一部切欠正面図である。FIG. 8 is a partially cutaway front view of the conventional anticorrosion core.
１，２ 管 ３ 挿口 ４ 受口 ５ 管継手部 ６ 防食コア ７ 筒状体 ８ つば部 ９Ａ，９Ｂ，９Ｃ，９Ｄ 環状フィン ２１，２２，２３ 端面接触環状部材 1, 2 Pipe 3 Inserting port 4 Receiving port 5 Pipe joint part 6 Corrosion preventive core 7 Cylindrical body 8 Collar part 9A, 9B, 9C, 9D Annular fin 21,22,23 End face contact annular member
Claims (1)
際に、これらで互いに接続される管の受口の内周面から
挿口の内周面にわたって配置される筒状体と、挿口が受
口に挿入されたときに受口の奥端面と挿口の先端面との
間に挟み込まれるつば部とが一体に形成され、このつば
部の挿口先端面に対向する面に、挿口の先端面に密着さ
せる端面接触環状部材が配設されていることを特徴とす
る管継手部の防食コア。1. A tubular shape, which is arranged from an inner peripheral surface of a receiving port of a pipe connected to them to an inner peripheral surface of the inserting port when the insertion port of the tube is inserted into the receiving port of another tube. The body and the collar part that is sandwiched between the back end surface of the mouth and the tip surface of the mouth when the mouthpiece is inserted into the mouth are integrally formed and face the tip surface of the mouth part of the mouthpiece. An end face contacting annular member which is brought into close contact with the tip end face of the insertion opening is disposed on the surface of the pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15658795A JPH0914572A (en) | 1995-06-23 | 1995-06-23 | Anticorrosion core in pipe joint part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15658795A JPH0914572A (en) | 1995-06-23 | 1995-06-23 | Anticorrosion core in pipe joint part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0914572A true JPH0914572A (en) | 1997-01-17 |
Family
ID=15631032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15658795A Pending JPH0914572A (en) | 1995-06-23 | 1995-06-23 | Anticorrosion core in pipe joint part |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0914572A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007224980A (en) * | 2006-02-22 | 2007-09-06 | Hitachi Metals Ltd | Pipe end anticorrosion member and piping structure |
| JP2009041773A (en) * | 2007-07-18 | 2009-02-26 | Sekisui Chem Co Ltd | Connection part structure and connection method for piping |
-
1995
- 1995-06-23 JP JP15658795A patent/JPH0914572A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007224980A (en) * | 2006-02-22 | 2007-09-06 | Hitachi Metals Ltd | Pipe end anticorrosion member and piping structure |
| JP2009041773A (en) * | 2007-07-18 | 2009-02-26 | Sekisui Chem Co Ltd | Connection part structure and connection method for piping |
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