JP2001200952A - Saddled three-way valve - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a saddled three-way valve for facilitating connecting execution work of a branch pipe by boring a main pipe only by rotating a valve element in one direction, and enabling a series of work of water supply and water stop to the branch pipe without reinstalling a rotary shaft part (an operation device) of the valve element while surely preventing fluid leakage to the outside without stopping fluid transport of the main pipe. SOLUTION: In a saddle part 2 fixed to the outer periphery of the main pipe 1 and this saddled three-way valve being installed in the saddle part to perform a water feed and stopping of the water feed to the branch pipe 9 from the main pipe 1, the three-way valve is composed of a valve body 5 for forming a first port part 6 joined to the saddle part 2, a second port part 7 detachably fitted with a cap 10 and arranged on the same axis as the first port part 6 and a third port part 8 in the direction almost orthogonal to this axis and the valve element 21 forming cross-sectional T-shaped passages 22, 23, 24 on the inside and being fitted to and installed in the valve body 5. The rotary shaft part 12 of the valve element 21 is arranged on the axis of the valve element 21 so as to be orthogonal to a horizontal plane including the T-shaped passages 22, 23, 24. The valve element 21 is made rotatable by 180 degrees around the rotary shaft part 12 of the valve.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は、流体輸送中の本管
に分岐管を接続施工するためのサドル付き三方弁に関す
るものであり、さらに詳しくは、本管の流体輸送を止め
ることなく且つ外部への流体漏れを確実に防止しつつ、
分岐管の接続施工を容易にしたサドル付き三方弁に関す
るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a three-way valve with a saddle for connecting and connecting a branch pipe to a main pipe during fluid transport, and more particularly to a three-way valve without stopping fluid transport in the main pipe and externally. While reliably preventing fluid leakage
The present invention relates to a three-way valve with a saddle that facilitates connection construction of a branch pipe.

【０００２】[0002]

【従来の技術】従来、流体輸送中の本管から分岐管を接
続施工させる分岐配管バルブにおいて、分岐配管施工時
の外部漏れを防止する構造としては、例えば、特開昭６
３―１６７１９１号公報に開示された分岐配管用バルブ
が知られていた。2. Description of the Related Art Conventionally, in a branch pipe valve for connecting and connecting a branch pipe from a main pipe during fluid transport, a structure for preventing external leakage at the time of branch pipe construction is disclosed in, for example, Japanese Unexamined Patent Publication No.
A valve for branch piping disclosed in Japanese Patent Application Publication No. 3-167191 has been known.

【０００３】前記分岐配管バルブの構造は、図９、図１
０に示すように、既設配管３２が接続される接続用開口
３３、接続用開口３３に対して反対側で、且つ接続用開
口３３に対して軸方向に整列する位置にあり、穿孔装置
３４又は操作装置３５が装着可能な操作用開口３６、及
び接続用開口３３と操作用開口３６の軸線に対して直角
方向に分岐用開口３７の３つの開口が設けられるバルブ
ボデー３８と、バルブボデー３８に内包され、接続用開
口３３と操作用開口３６とを連通する直線流路３９とこ
の流路に対して直角方向に分岐して分岐用開口３７と連
通することができる分岐流路４０とが形成されているボ
ール弁子４１と、分岐用開口３７に装着され、ボール弁
子４１を回転させる操作装置３５から構成されており、
接続用開口３３の内端と操作用開口３６の内端に一対の
シートリング４２が、さらに接続用開口３３の内端と操
作用開口３６の軸線に対して直交する位置に一対のシー
トリング４３が各々配設されている。これらニ対のシー
トリング４２、４３によってボール弁子４１はバルブボ
デー３８内に挟持される構造になっている。分岐配管用
バルブはクランプ４４上部に固定されている。The structure of the branch pipe valve is shown in FIGS.
0, the connection opening 33 to which the existing pipe 32 is connected, on the opposite side to the connection opening 33, and at a position axially aligned with the connection opening 33, the punching device 34 or The valve body 38 is provided with an operation opening 36 in which the operation device 35 can be mounted, and a valve body 38 provided with three openings of a branching opening 37 in a direction perpendicular to the axis of the connection opening 33 and the operation opening 36. A straight flow path 39 which is included and communicates the connection opening 33 and the operation opening 36 and a branch flow path 40 which branches in a direction perpendicular to the flow path and can communicate with the branch opening 37 are formed. The ball valve 41 and the operating device 35 mounted on the branch opening 37 and rotating the ball valve 41.
A pair of seat rings 42 are provided at the inner end of the connection opening 33 and the inner end of the operation opening 36, and a pair of seat rings 43 are provided at positions orthogonal to the inner end of the connection opening 33 and the axis of the operation opening 36. Are arranged respectively. The ball valve 41 is sandwiched in the valve body 38 by the two pairs of seat rings 42 and 43. The branch pipe valve is fixed to the upper part of the clamp 44.

【０００４】前記分岐配管用バルブを用いて既設配管３
２に分岐配管４５を接続施工する方法は、図９に示すよ
うに、まず、ボール弁子４１内の直線流路３９が、バル
ブボデー３８の接続用開口３３と操作用開口３６を連通
し、且つ分岐流路４０が分岐用開口３７と直交する位置
に配置された状態の分岐配管用バルブを、クランプ４４
にて既設配管３２に固定し、操作用開口３６の穿孔装置
３４のカッタ４６を延ばし、既設配管３２を穿孔する。
次いで、カッタ４６を後退させ、分岐用開口３７に装着
されている操作装置（ボール弁子４１の回転軸）３５を
回転させることによりボール弁子４１を縦方向（鉛直方
向）に９０度回転させて、分岐流路４０を接続用開口３
３に連通させる。その後、図１０に示すように、穿孔装
置３４をバルブボデー３８から取り外し、操作装置３５
を分岐用開口３７から操作用開口３６に装着し直し、分
岐配管４５を分岐用開口３７に接続する。最後に、操作
装置３５を回転させ、ボール弁子４１を横方向（水平方
向）に９０度回転させることにより、既設配管３２と分
岐配管４５を連通させるものであった。[0004] The existing piping 3
As shown in FIG. 9, the method of connecting and connecting the branch pipe 45 to the second pipe 2 is as follows. First, the straight flow path 39 in the ball valve 41 communicates with the connection opening 33 and the operation opening 36 of the valve body 38. The branch pipe valve in a state where the branch flow path 40 is arranged at a position orthogonal to the branch opening 37 is
Then, the cutter 46 of the punching device 34 of the operation opening 36 is extended, and the existing pipe 32 is pierced.
Next, the cutter 46 is retracted, and the operating device (rotary shaft of the ball valve 41) 35 mounted on the branch opening 37 is rotated to rotate the ball valve 41 90 degrees in the vertical direction (vertical direction). To connect the branch passage 40 to the connection opening 3.
Connect to 3. Thereafter, as shown in FIG. 10, the punching device 34 is removed from the valve body 38, and the operating device 35
Is remounted from the branch opening 37 to the operation opening 36, and the branch pipe 45 is connected to the branch opening 37. Finally, by rotating the operation device 35 and rotating the ball valve element 41 90 degrees in the horizontal direction (horizontal direction), the existing pipe 32 and the branch pipe 45 are communicated.

【０００５】[0005]

【発明が解決しようとする課題】このように、上記構造
の分岐配管用バルブを用いると、既設配管（本管）に分
岐配管（分岐管）を接続施工する場合、既設配管内の流
体の供給を止めることなく且つ流体の外部漏れを防止す
ることはできるものの、操作装置を分岐用開口から操作
用開口に装着し直してボール弁子をニ方向に回転するこ
とが必要で、分岐配管の接続施工の作業が煩雑になって
しまう。また、操作装置を装着し直す時に周囲の土砂等
がバルブ内に混入してしまい分岐配管用バルブの操作
性、シール性に不具合が生じる虞れがあった。As described above, when the branch pipe valve having the above structure is used, when the branch pipe (branch pipe) is connected to the existing pipe (main pipe), supply of the fluid in the existing pipe is performed. Although it is possible to prevent the fluid from leaking out without stopping the operation, it is necessary to remount the operating device from the branching opening to the operating opening and rotate the ball valve in two directions. The construction work becomes complicated. In addition, when the operating device is remounted, there is a possibility that surrounding earth and sand and the like may be mixed into the valve, causing a problem in operability and sealing performance of the branch pipe valve.

【０００６】本発明は、以上のような従来技術の問題点
に鑑みなされたもので、その目的は、サドル付き三方弁
において、本管の流体輸送を止めることなく且つ外部へ
の流体漏れを確実に防止しつつ、操作装置を装着し直す
ことなく、弁体を一方向へ回転させるだけで本管への穿
孔、分岐管への給水・止水の一連の作業を行うことを可
能にし、分岐管の接続施工を容易にしたサドル付き三方
弁を提供することにある。SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and has as its object to provide a three-way valve with a saddle that can reliably prevent fluid leakage to the outside without stopping fluid transport in the main pipe. It is possible to perform a series of operations to pierce the main pipe, supply water to the branch pipe, and stop water by simply rotating the valve body in one direction without reattaching the operating device while preventing An object of the present invention is to provide a three-way valve with a saddle that facilitates connection of pipes.

【０００７】[0007]

【課題を解決するための手段】このため本発明では、本
管の外周に固定されるサドル部と、該サドル部に取りつ
けられ前記本管から分岐管への通水や通水の停止を行う
サドル付き三方弁において、該三方弁が、前記サドル部
に結合される第１ポート部と、キャップが脱着自在に嵌
合され、該第１ポート部と同一軸線上に配置される第２
ポート部と、該軸線とほぼ直交する方向に第３ポート部
とが形成された弁本体、並びに内部に断面Ｔ字形の流路
が形成され且つ該弁本体内に嵌装された弁体とからな
り、該弁体の中心軸線上に、前記Ｔ字形の流路を含む水
平面と直交するように弁体の回転軸部が設けられ、該弁
体を弁の回転軸廻りに１８０度回動可能にしたことを特
徴とする。Therefore, according to the present invention, a saddle portion fixed to the outer periphery of the main pipe, and water flow from the main pipe to the branch pipe attached to the saddle portion and stop of water flow are performed. In a three-way valve with a saddle, the three-way valve has a first port portion connected to the saddle portion, a second cap which is detachably fitted with a cap, and which is arranged on the same axis as the first port portion.
A valve body having a port portion and a third port portion formed in a direction substantially perpendicular to the axis, and a valve body having a T-shaped cross section formed therein and fitted in the valve body. The rotation axis of the valve element is provided on the central axis of the valve element so as to be orthogonal to the horizontal plane including the T-shaped flow path, and the valve element can be turned 180 degrees around the rotation axis of the valve. It is characterized by the following.

【０００８】また、弁本体に、弁の回転軸部を支承する
首部を設けると共に、該首部に回動可能且つ弁の回転軸
部に対して回動不能となるように嵌合してハンドルを設
け、該ハンドルにハンドルストッパー機構を設けたこと
を第２の特徴とする。The valve body is provided with a neck for supporting the rotary shaft of the valve, and the handle is fitted to the neck so as to be rotatable and non-rotatable with respect to the rotary shaft of the valve. A second feature is that the handle is provided with a handle stopper mechanism.

【０００９】さらに、弁本体又はハンドルに開度指示部
を設けたことを第３の特徴とする。Further, a third feature is that an opening degree indicating portion is provided on the valve body or the handle.

【００１０】本発明のサドル付き三方弁の材質は、ポリ
オレフィン系のポリエチレンが好適に使用されるが、他
の樹脂または金属でも良く特に材質には限定されない。As the material of the three-way valve with a saddle of the present invention, polyolefin-based polyethylene is preferably used, but other resins or metals may be used, and the material is not particularly limited.

【００１１】[0011]

【発明の実施の形態】以下、本発明の実施の形態につい
て図面に示す実施例を参照して説明するが、本発明が本
実施例に限定されないことは言うまでもない。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments of the present invention will be described below with reference to the embodiments shown in the drawings, but it is needless to say that the present invention is not limited to the embodiments.

【００１２】図１は本発明のサドル付き三方弁を本管に
設置した状態を示す縦断面図である。図２は図１の状態
で本管を穿孔した状態を示す縦断面図である。図３は図
１の状態で本管を穿孔した後の状態を示す縦断面図であ
る。図４は本管への分岐管接続施工を完了した状態の縦
断面図である。図５は分岐管への給水を止めた状態を示
す縦断面図である。図６は図１のＡ−Ａ線に沿った部分
断面図である。図７は本発明に係る三方弁のみを示す分
解斜視図である。図８は三方弁のハンドルの底面斜視図
である。FIG. 1 is a longitudinal sectional view showing a state in which a three-way valve with a saddle of the present invention is installed in a main pipe. FIG. 2 is a longitudinal sectional view showing a state where the main pipe is pierced in the state of FIG. FIG. 3 is a longitudinal sectional view showing a state after the main pipe is pierced in the state of FIG. FIG. 4 is a longitudinal sectional view showing a state in which the branch pipe connection to the main pipe has been completed. FIG. 5 is a longitudinal sectional view showing a state in which water supply to the branch pipe is stopped. FIG. 6 is a partial sectional view taken along line AA of FIG. FIG. 7 is an exploded perspective view showing only the three-way valve according to the present invention. FIG. 8 is a bottom perspective view of the handle of the three-way valve.

【００１３】図１において、１は流体輸送中のポリエチ
レン製の本管で、２はポリエチレン製の鞍形を有したサ
ドル部で、内部には電気融着用の電熱線３が配設されて
いる。４はステンレス製のサドルクランプで、サドル部
２と本管１とを仮止めしている。In FIG. 1, reference numeral 1 denotes a main pipe made of polyethylene during fluid transport, 2 denotes a saddle part having a saddle shape made of polyethylene, and a heating wire 3 for electric welding is disposed inside. . Reference numeral 4 denotes a saddle clamp made of stainless steel, which temporarily fixes the saddle portion 2 to the main pipe 1.

【００１４】５はポリエチレン製の弁本体で、第１ポー
ト部６と第２ポート部７と第３ポート部８とが形成され
ている。第１ポート部６は、サドル部２中央に結合連通
されている。また第２ポート部７は、第１ポート部６に
相対して同一軸線上に配置され、弁本体５に嵌着固定さ
れているボディキャップ５―ａに設けられ、図４に示す
ように、その外周面には分岐管９の接続施工完了時に、
キャップ１０が外端面に装着されたシートリング１１を
介して螺合される。また第３ポート部８は、前記軸線と
ほぼ直交する位置に形成され、図３に示すように、その
先端部には分岐管９が接続固定できるようにされてい
る。Reference numeral 5 denotes a polyethylene valve body in which a first port portion 6, a second port portion 7, and a third port portion 8 are formed. The first port 6 is connected and connected to the center of the saddle 2. Further, the second port portion 7 is disposed on the same axis as the first port portion 6 and provided on a body cap 5-a fitted and fixed to the valve body 5, and as shown in FIG. When the connection of branch pipe 9 is completed,
The cap 10 is screwed through a seat ring 11 mounted on the outer end surface. Further, the third port portion 8 is formed at a position substantially orthogonal to the axis, and as shown in FIG. 3, a branch pipe 9 can be connected and fixed to a distal end portion thereof.

【００１５】さらに、図６及び図７に示すように、第１
ポート部６、第２ポート部７及び第３ポート部８を含む
平面と直交し、且つ前記軸線と第３ポート部８との交点
を通る後記弁体２１の中心軸線上に、後記弁体２１の回
転軸部１２を支承する略円盤状の首部１３が設けられ、
その中心には、弁体２１の回転軸部１２を支承するため
の貫通口１４が設けられている。すなわち、弁体２１の
回転軸部１２は、弁体２１のＴ字形の流路を含む平面と
直交すると共に、各ポート部と直交して設けられ、該弁
体２１はこの弁体２１の回転軸廻りに回動可能にされて
いる。これにより、本管（既設配管）１の穿孔から第１
ポート部６と分岐管９との導通までの一連の作業を、弁
体２１の回転軸部１２（従来技術における操作装置）を
移動させることなく、すなわち、弁体２１を従来のよう
にニ方向に回転させる必要がなく、一方向のみに回転さ
せるという極めて簡便な操作で行うことができる。尚、
１５は後記ハンドル１６の回転を１８０度以内に規制す
るストッパーで、貫通口１４外周に円弧（中心角９０
度）状に突設され、ハンドル１６の凹部２７に嵌合され
る。さらに首部１３の外周には開度表示部１７が設けら
れ、周方向に９０度間隔で「止水」「穿孔」「給水」の
表示が反時計回りに描出されている。Further, as shown in FIG. 6 and FIG.
On the central axis of the valve body 21, which is orthogonal to the plane including the port portion 6, the second port portion 7, and the third port portion 8 and passes through the intersection of the axis and the third port portion 8, A substantially disk-shaped neck portion 13 that supports the rotating shaft portion 12 is provided,
At the center thereof, a through hole 14 for supporting the rotating shaft portion 12 of the valve body 21 is provided. That is, the rotating shaft portion 12 of the valve body 21 is provided orthogonal to the plane including the T-shaped flow path of the valve body 21 and orthogonal to each port portion. It is rotatable around an axis. As a result, the main pipe (existing pipe) 1
A series of operations until the connection between the port portion 6 and the branch pipe 9 is performed without moving the rotary shaft portion 12 (operating device in the related art) of the valve body 21, that is, the valve body 21 is moved in two directions as in the conventional case. It is not necessary to rotate in one direction, and it can be performed by an extremely simple operation of rotating in only one direction. still,
Reference numeral 15 denotes a stopper for restricting rotation of the handle 16 described later within 180 degrees.
The projection 16 is formed in a convex shape and is fitted into the concave portion 27 of the handle 16. Further, an opening degree display section 17 is provided on the outer periphery of the neck portion 13, and the indications of "water stoppage", "perforation", and "water supply" are drawn counterclockwise at intervals of 90 degrees in the circumferential direction.

【００１６】また図１に示すように、１８、１９、２０
は、シートリングで、各々のポート部の内端に配設さ
れ、後記弁体２１を挟持している。尚、本実施例では、
開度表示部１７が文字によって表示されているが、色分
けなどの表示でも良く、開度を表わすものとして機能す
れば特に限定されない、また、開度表示部１７は弁本体
５に設けられているが、逆にハンドル１６に開度表示部
１７を設け、弁本体５に後記開度指示部２６を設けるも
のでも良い。Also, as shown in FIG.
Is a seat ring, which is disposed at the inner end of each port portion and sandwiches a valve body 21 described later. In this embodiment,
Although the opening degree display section 17 is displayed by characters, it may be displayed by color coding or the like, and is not particularly limited as long as it functions as indicating the opening degree. The opening degree display section 17 is provided on the valve body 5. However, on the contrary, the opening indicating section 17 may be provided on the handle 16 and the opening indicating section 26 may be provided on the valve body 5.

【００１７】２１は弁本体５内の中央に配置された球状
の硬質塩化ビニル樹脂製弁体で、内部には、図４に示す
ように、分岐管９の接続施工が完了した状態で、本管１
と分岐管９の導通時には第１ポート部６と連通するよう
に設けられた第３流路２４と、第３流路２４と直交した
第１流路２２及び第２流路２３とにより断面Ｔ字形の流
路が形成されている。さらに弁体２１は、分岐管９の接
続施工完了の状態（図４参照）から後記弁体２１の回転
軸部１２を中心にして時計回り方向に１８０度回動可能
に弁本体５に嵌装されている。Numeral 21 denotes a spherical rigid vinyl chloride resin valve disposed in the center of the valve body 5, and the inside of the valve is connected to the branch pipe 9 in a state where connection of the branch pipe 9 is completed as shown in FIG. Tube 1
The cross section T is formed by a third flow path 24 provided so as to communicate with the first port portion 6 when the flow path and the branch pipe 9 are conducted, and a first flow path 22 and a second flow path 23 orthogonal to the third flow path 24. A U-shaped channel is formed. Further, the valve body 21 is fitted to the valve main body 5 so as to be able to rotate clockwise by 180 degrees around the rotating shaft 12 of the valve body 21 from the state where the connection of the branch pipe 9 is completed (see FIG. 4). Have been.

【００１８】図６に示すように、１２は硬質塩化ビニル
樹脂製の弁の回転軸部で、断面Ｔ字形の流路を含む平面
と直交する弁体２１の中心軸線上に配置され、一端が弁
体２１に固定され、他端には後記ハンドル１６が固定さ
れている。As shown in FIG. 6, reference numeral 12 denotes a rotary shaft portion of a valve made of a hard vinyl chloride resin, which is disposed on a central axis of a valve body 21 orthogonal to a plane including a flow path having a T-shaped cross section. The handle 16 is fixed to the valve body 21 and the other end is fixed to the other end.

【００１９】図７、図８に示すように、１６はＡＢＳ製
のハンドルで、下端部には開度指示用窓である中心角９
０度の円弧状切り欠き部２５を有する略円盤状の開度指
示部２６が形成され、底面にはストッパー１５が摺動可
能に嵌合する中心角２７０度の部分円弧状の凹部２７が
設けられ、中心には、弁の回転軸部１２が固定される嵌
合凹部２８が設けられている。尚、本実施例では、開度
指示部２６が円弧状切り欠き部２５にて構成されている
が、これに限らず矢印などの他の開度指示構成でも良
い。As shown in FIGS. 7 and 8, reference numeral 16 denotes a handle made of ABS.
A substantially disk-shaped opening indicating portion 26 having an arc-shaped notch 25 of 0 degree is formed, and a partial arc-shaped concave portion 27 having a central angle of 270 degrees with which the stopper 15 is slidably fitted is provided on the bottom surface. In the center, there is provided a fitting recess 28 to which the rotary shaft portion 12 of the valve is fixed. In the present embodiment, the opening degree instructing section 26 is constituted by the arc-shaped notch 25, but the invention is not limited thereto, and another opening degree instructing section such as an arrow may be used.

【００２０】次に、図１乃至図８を参照して、本発明の
サドル付き三方弁を用いて本管１と分岐管９を接続施工
する方法について説明する。まず、ハンドル１６を操作
して、サドル付き三方弁の弁体２１の第１流路２２が第
１ポート部６と、第２流路２３が第２ポート部７と各々
連通し、第３流路２４が第３ポート部８の反対側に位置
するように調整する（図1に示す状態）。このとき、サ
ドル付き三方弁の開度表示部２６は「穿孔」の表示にな
るように調整しておく。Next, a method of connecting and connecting the main pipe 1 and the branch pipe 9 using the three-way valve with a saddle of the present invention will be described with reference to FIGS. First, by operating the handle 16, the first flow path 22 of the valve element 21 of the three-way valve with the saddle communicates with the first port portion 6, the second flow path 23 communicates with the second port portion 7, and the third flow path The road 24 is adjusted so as to be located on the opposite side of the third port section 8 (the state shown in FIG. 1). At this time, the opening degree display unit 26 of the three-way valve with a saddle is adjusted so as to display “perforation”.

【００２１】その後、図１に示すようにサドル付き三方
弁のサドル部２を本管１上面に跨らせ、サドルクランプ
４をサドル部２と本管１の外側より当てがい固定した
後、サドル部２と本管１を仮止めして、サドル部２に設
けられている電熱線３に通電し、本管１に融着させる。
これでサドル部２は、本管１と一体となる。次いで、第
２ポート部７上端部のシートリング１１を介して穿孔機
２９を装着し、サドルクランプ４を取り外す。Thereafter, as shown in FIG. 1, the saddle portion 2 of the three-way valve with a saddle is straddled over the upper surface of the main pipe 1 and the saddle clamp 4 is fixed to the saddle portion 2 from the outside of the main pipe 1 and fixed. The section 2 and the main pipe 1 are temporarily fixed, and a heating wire 3 provided in the saddle section 2 is energized to be fused to the main pipe 1.
Thus, the saddle portion 2 is integrated with the main pipe 1. Next, the punch 29 is mounted via the seat ring 11 at the upper end of the second port portion 7, and the saddle clamp 4 is removed.

【００２２】次に、図２に示すように、穿孔機２９の先
端部に設けられている穿孔刃３０を第２ポート部７内か
ら、第２流路２３内を通り、第１ポート部６内へと降下
させ、本管１上面に穿孔刃３０を当接させ、回転させて
本管１を穿孔する。この時、各々のシートリング１１、
１８、１９、２０によって、本管１中の流体の外部漏れ
は確実に防止される。Next, as shown in FIG. 2, a piercing blade 30 provided at the tip of the piercing machine 29 is passed through the second flow path 23 from inside the second port section 7 to the first port section 6. The main pipe 1 is pierced by being lowered into the main pipe 1 so that the drilling blade 30 is brought into contact with the upper surface of the main pipe 1 and rotated. At this time, each seat ring 11,
By means of 18, 19 and 20, external leakage of the fluid in the main pipe 1 is reliably prevented.

【００２３】本管１穿孔後は、図３に示すように、穿孔
刃３０を上昇させて第２ポート部７内に戻し、弁体２１
はそのままの状態で、第３ポート部８とポリエチレン製
分岐管９を、ＥＦ継手３１を用いて接続する（図３の状
態）。その後、ハンドル１６により弁体２１を縦方向
（図中、反時計回りに）９０度回転させる。このとき、
ハンドル１６の開度表示部１７が「給水」の表示になる
ように調整しておく。こうして、本管１と分岐管９は通
水状態となる。After piercing the main pipe 1, as shown in FIG. 3, the piercing blade 30 is raised and returned into the second port portion 7, and the valve body 21 is pierced.
Is connected to the third port portion 8 and the polyethylene branch pipe 9 using the EF joint 31 (the state of FIG. 3). Thereafter, the valve body 21 is rotated 90 degrees in the vertical direction (counterclockwise in the figure) by the handle 16. At this time,
The opening degree display section 17 of the handle 16 is adjusted so as to display "water supply". Thus, the main pipe 1 and the branch pipe 9 are in a water-permeable state.

【００２４】最後に、第２ポート部７から穿孔機２９を
取り外し、キャップ１０を螺着させることによって、本
管１内の流体を止めることなく本管１への分岐管９の接
続施工が完了する（図４の状態）。この時、弁体２１は
本管１内の流体圧がかかり、第２ポート部７のシートリ
ング１９に押圧されるため、確実なシールができ、第２
ポート部７には流体が漏れず、キャップ１０には流体圧
はかからない。したがって、キャップ１０からの流体漏
れは起こらず、サドル付き三方弁から外部への流体漏れ
は、長期にわたり確実に防止できる。Finally, the drilling machine 29 is removed from the second port section 7 and the cap 10 is screwed on to complete the connection of the branch pipe 9 to the main pipe 1 without stopping the fluid in the main pipe 1. (The state of FIG. 4). At this time, the fluid pressure in the main pipe 1 is applied to the valve body 21, and the valve body 21 is pressed by the seat ring 19 of the second port portion 7, so that reliable sealing can be performed, and
No fluid leaks into the port 7 and no fluid pressure is applied to the cap 10. Therefore, fluid leakage from the cap 10 does not occur, and fluid leakage from the three-way valve with a saddle to the outside can be reliably prevented for a long time.

【００２５】また、施工後、宅地の取り壊し等により、
本管１から分岐管９への給水を止める必要がある時は、
図５に示すように、ハンドル１６により弁体２１を時計
回りに１８０度回転させる。すなわち、開度表示部１７
が「止水」の表示になるようにハンドル１６を操作し、
サドル付き三方弁を止水状態にする。その時、本管１の
流体は第１ポート部６内でシールされる。Also, after the construction, demolishing the residential land, etc.
When it is necessary to stop the water supply from the main pipe 1 to the branch pipe 9,
As shown in FIG. 5, the valve body 21 is rotated clockwise by 180 degrees by the handle 16. That is, the opening degree display unit 17
Operate the handle 16 so that is displayed as "water stop",
Put the three-way valve with saddle in the water stop state. At that time, the fluid in the main pipe 1 is sealed in the first port portion 6.

【００２６】[0026]

【発明の効果】本発明は以上のように構成したので、こ
れを使用することにより以下の優れた効果が得られる。 （１）本管の流体輸送を止めることなく且つ外部への流
体漏れを確実に防止できる。 （２）弁体の回転軸部（操作装置）を分岐用開口から操
作用開口に装着し直すことなく、弁体を一方向へ回転さ
せるだけで本管への穿孔、分岐管への給水・止水の一連
の作業が行えるので、分岐管の接続施工を容易に行うこ
とができる。 （３）弁体の回転軸部（操作装置）を分岐用開口から操
作用開口に装着し直す必要がないので、周囲の土砂等が
バルブ内に混入することがなく、分岐配管用バルブの操
作性、シール性に不具合が生じる虞れがなくなる。 （４）分岐管への給水時にキャップに本管の流体圧がか
からないので、樹脂製のサドル付き三方弁であってもサ
ドル付き三方弁本体とキャップの間から漏水することが
ない。 （５）ハンドルストッパー機構を設けたので、弁体が必
要以上に回動することを防止でき、ハンドルの誤操作を
防止できる。 （６）弁本体又はハンドルに開度指示部を設けたので、
弁体の開度状態が一目で判り、施工ミスを確実に防止で
きる。Since the present invention is constructed as described above, the following excellent effects can be obtained by using the present invention. (1) Fluid leakage to the outside can be reliably prevented without stopping fluid transport of the main pipe. (2) Perforating the main pipe and supplying water to the branch pipe by simply rotating the valve body in one direction without remounting the rotary shaft (operating device) of the valve body from the branch opening to the operation opening. Since a series of operations for stopping water can be performed, connection of the branch pipes can be easily performed. (3) Since there is no need to remount the rotary shaft (operating device) of the valve element from the branching opening to the operating opening, the surrounding soil and the like do not enter the valve, and the operation of the branch piping valve is prevented. This eliminates the possibility that a problem may occur in the performance and sealing performance. (4) Since fluid pressure of the main pipe is not applied to the cap when water is supplied to the branch pipe, water does not leak from between the cap and the cap of the three-way valve with saddle even if the resin is a three-way valve with saddle. (5) Since the handle stopper mechanism is provided, the valve body can be prevented from rotating more than necessary, and erroneous operation of the handle can be prevented. (6) Since the opening degree indicator is provided on the valve body or the handle,
The state of opening of the valve body can be seen at a glance, and construction errors can be reliably prevented.

【図面の簡単な説明】[Brief description of the drawings]

【図１】本発明のサドル付き三方弁を本管に設置した状
態を示す縦断面図である。FIG. 1 is a longitudinal sectional view showing a state where a three-way valve with a saddle of the present invention is installed in a main pipe.

【図２】図１の状態で本管を穿孔した状態を示す縦断面
図である。FIG. 2 is a longitudinal sectional view showing a state where a main pipe is pierced in the state of FIG. 1;

【図３】図１の状態で本管を穿孔した後の状態を示す縦
断面図である。FIG. 3 is a longitudinal sectional view showing a state after the main pipe is pierced in the state of FIG. 1;

【図４】本管への分岐管接続施工を完了した状態の縦断
面図である。FIG. 4 is a longitudinal sectional view showing a state in which a branch pipe connection to a main pipe has been completed.

【図５】分岐管への給水を止めた状態を示す縦断面図で
ある。FIG. 5 is a longitudinal sectional view showing a state in which water supply to a branch pipe is stopped.

【図６】図１のＡ−Ａ線に沿った部分断面図である。FIG. 6 is a partial sectional view taken along line AA of FIG. 1;

【図７】本発明に係る三方弁のみを示す分解斜視図であ
る。FIG. 7 is an exploded perspective view showing only a three-way valve according to the present invention.

【図８】三方弁のハンドルの底面斜視図である。FIG. 8 is a bottom perspective view of the handle of the three-way valve.

【図９】従来の既設管穿孔時の縦断面図である。FIG. 9 is a longitudinal sectional view of a conventional existing pipe when drilling.

【図１０】従来の既設配管への分岐配管接続施工を完了
した状態を示す縦断面図である。FIG. 10 is a longitudinal sectional view showing a state in which a conventional branch pipe connection to existing pipes has been completed.

【符号の説明】[Explanation of symbols]

１ 本管 ２ サドル部 ３ 電熱線 ４ サドルクランプ ５ 弁本体 ５−ａボディキャップ ６ 第１ポート部 ７ 第２ポート部 ８ 第３ポート部 ９ 分岐管 １０ キャップ １１，１８，１９，２０ シートリング １２ 弁体の回転軸部 １３ 首部 １４ 貫通口 １５ ストッパー １６ ハンドル（操作装置） １７ 開度表示部 ２１ 弁体 ２２ 第１流路 ２３ 第２流路 ２４ 第３流路 ２５ 円弧状切り欠き部 ２６ 開度指示部 ２７ 凹部 ２８ 嵌合凹部 ２９ 穿孔機 ３０ 穿孔刃 ３１ ＥＦ継手 DESCRIPTION OF SYMBOLS 1 Main pipe 2 Saddle part 3 Heating wire 4 Saddle clamp 5 Valve body 5-a body cap 6 First port part 7 Second port part 8 Third port part 9 Branch pipe 10 Cap 11, 18, 19, 20 Seat ring 12 Rotating shaft 13 of valve body 13 Neck 14 Through hole 15 Stopper 16 Handle (operating device) 17 Openness display 21 Valve body 22 First flow path 23 Second flow path 24 Third flow path 25 Arc-shaped notch 26 Open Degree indicator 27 recess 28 fitting recess 29 drilling machine 30 drilling blade 31 EF joint

フロントページの続き Ｆターム(参考） 3H063 AA06 BB33 BB39 DA06 EE11 EE17 GG06 GG11 3H065 AA06 BA01 BA05 BC03 BC05 3H066 AA06 BA18 BA19 3H067 AA24 CC33 CC38 DD03 DD24 EA06 EC13 ED20 FF09 GG13 GG21 Continued on the front page F term (reference) 3H063 AA06 BB33 BB39 DA06 EE11 EE17 GG06 GG11 3H065 AA06 BA01 BA05 BC03 BC05 3H066 AA06 BA18 BA19 3H067 AA24 CC33 CC38 DD03 DD24 EA06 EC13 ED20 FF09 GG13 GG21

Claims (3)

【特許請求の範囲】[Claims] 【請求項１】本管の外周に固定されるサドル部と、該サ
ドル部に取りつけられ前記本管から分岐管への通水や通
水の停止を行うサドル付き三方弁において、該三方弁
が、前記サドル部に結合される第１ポート部と、キャッ
プが脱着自在に嵌合され、該第１ポート部と同一軸線上
に配置される第２ポート部と、該軸線とほぼ直交する方
向に第３ポート部とが形成された弁本体、並びに内部に
断面Ｔ字形の流路が形成され且つ該弁本体内に嵌装され
た弁体とからなり、該弁体の中心軸線上に、前記Ｔ字形
の流路を含む水平面と直交するように弁体の回転軸部が
設けられ、該弁体を弁体の回転軸廻りに１８０度回動可
能にしたことを特徴とするサドル付き三方弁。1. A three-way valve with a saddle fixed to the outer periphery of a main pipe and having a saddle attached to the saddle section for stopping water flow from the main pipe to a branch pipe or stopping water flow. A first port portion coupled to the saddle portion, a second port portion to which a cap is removably fitted and arranged on the same axis as the first port portion, in a direction substantially orthogonal to the axis. A valve body having a third port portion formed therein; and a valve body having a T-shaped cross section formed therein and fitted in the valve body. A three-way valve with a saddle, wherein a rotary shaft of a valve element is provided so as to be orthogonal to a horizontal plane including a T-shaped flow path, and the valve element is rotatable by 180 degrees around the rotation axis of the valve element. . 【請求項２】弁本体に、弁の回転軸部を支承する首部を
設けると共に、該首部に回動可能且つ弁の回転軸部に対
して回動不能となるように嵌合してハンドルを設け、該
ハンドルにハンドルストッパー機構を設けたことを特徴
とする請求項１記載のサドル付き三方弁。2. A valve body having a neck for supporting a rotary shaft of a valve, and a handle fitted to the neck so as to be rotatable and non-rotatable with respect to the rotary shaft of the valve. The three-way valve with a saddle according to claim 1, wherein a handle stopper mechanism is provided on the handle. 【請求項３】弁本体又はハンドルに開度指示部を設けた
ことを特徴とする請求項１又は請求項２記載のサドル付
き三方弁。3. The three-way valve with a saddle according to claim 1, wherein an opening indicating portion is provided on the valve body or the handle.