JP2009061441A - Water pipe cleaning method - Google Patents

Water pipe cleaning method Download PDF

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JP2009061441A
JP2009061441A JP2008187251A JP2008187251A JP2009061441A JP 2009061441 A JP2009061441 A JP 2009061441A JP 2008187251 A JP2008187251 A JP 2008187251A JP 2008187251 A JP2008187251 A JP 2008187251A JP 2009061441 A JP2009061441 A JP 2009061441A
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pipe
water pipe
pig
water
branch pipe
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JP4989576B2 (en
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Shoichi Shimomura
章一 下村
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Kurimoto Ltd
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Kurimoto Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To simply, easily and efficiently clean a water pipe by smoothly moving a pipe cleaning pig to a water pipe and a branch pipe. <P>SOLUTION: A water pipe cleaning method comprises the steps of introducing the pipe cleaning pig 3 from the branch pipe 2 on the feeding side connected to the water pipe 1, feeding pressurized fluid into the branch pipe 2 to move the pipe cleaning pig 3 from the branch pipe 2 into the water pipe 1, forcing the cleaning pig 3 to move further by the pressurized fluid to scrub and clean the inner surface of the water pipe 1, moving the cleaning pig 3 from the water pipe 1 to the branch pipe 2 on the removal side after scrubbing and cleaning the water pipe 1, and removing the cleaning pig 3 to the outside. A flexible wire 51 having a rotary power source 52 connected to the rear end and a rotary cleaning tool 50 connected to the leading end is inserted into the water pipe 1 through the branch pipe 2 to introduce the rotary cleaning tool 50 on the leading end into the water pipe 1, and the rotary cleaning tool 50 is turned by the rotary drive source 52 via the flexible wire 51 to remove foreign matter on the inner surface of the water pipe 1, and then the water pipe cleaning pig 3 is introduced from the branch pipe 2 into the water pipe 1 to scrub and clean the water pipe 1. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、地中に埋設している水道管に洗管ピグを圧送して、洗管ピグでもって水道管の内面を擦り洗いする洗浄方法に関する。   The present invention relates to a cleaning method in which a washing pipe pig is pumped to a water pipe buried in the ground and the inner surface of the water pipe is rubbed with the washing pipe pig.

地中の水道管に洗管ピグを挿入し、これを水道水で圧送して水道管の内面を擦り洗いする方法とこれに使用する洗管ピグは開発されている。(特許文献1ないし4参照)
特開平10−314689号公報 特開平11−253902号公報 特開平9−268642号公報 特開平9−268643号公報
A method of scrubbing the inner surface of a water pipe by inserting a wash pipe pig into an underground water pipe and pumping it with tap water has been developed. (See Patent Documents 1 to 4)
Japanese Patent Laid-Open No. 10-314689 JP-A-11-253902 JP-A-9-268642 Japanese Patent Laid-Open No. 9-268643

これらの特許文献に記載される洗浄方法は、洗管ピグを水道管内に圧送して、洗管ピグの表面で水道管の内面を擦って洗浄する。この方法は、簡単に地中の水道管を洗浄できる。ただ、この洗浄方法は、水道管に洗管ピグを入れるために、水道管に挿入管と排出管を連結している。挿入管と排出管を連結するために、地面を掘り起こして水道管を地上に表出し、この状態で水道管に挿入管と排出管を連結する必要があり、この工程に非常に手間がかかる欠点がある。   In the cleaning methods described in these patent documents, the washing pipe pig is pumped into the water pipe, and the inner surface of the water pipe is rubbed and washed with the surface of the washing pipe pig. This method can easily clean underground water pipes. However, in this cleaning method, the insertion pipe and the discharge pipe are connected to the water pipe in order to put the washing pipe pig into the water pipe. In order to connect the insertion pipe and the discharge pipe, it is necessary to dig up the ground and expose the water pipe to the ground, and in this state, it is necessary to connect the insertion pipe and the discharge pipe to the water pipe. There is.

本発明は、この欠点を解決することを目的に開発されたもので、本発明の大切な目的は、水道管に洗管ピグの挿入管や排出管を連結することなく、水道管に洗管ピグを挿入し、また、水道管から洗管ピグを取り出しして、極めて簡単かつ容易に、しかも能率よく水道管を洗浄する水道管の洗浄方法を提供することにある。   The present invention was developed for the purpose of solving this drawback, and an important object of the present invention is to connect the water pipe to the water pipe without connecting the insertion pipe or the discharge pipe of the washing pipe to the water pipe. It is an object of the present invention to provide a water pipe cleaning method for inserting a pig and taking out a washing pipe pig from the water pipe so as to clean the water pipe very easily, easily and efficiently.

本発明の水道管の洗浄方法は、前述の目的を達成するために以下の構成を備える。
水道管の洗浄方法は、水道管1に連結している送り込み側の消火栓と空気管と泥吐き部のいずれかからなる分岐管2から洗管ピグ3を挿入し、挿入された洗管ピグ3を圧送する加圧流体を分岐管2に供給して、この加圧流体で洗管ピグ3を分岐管2から水道管1内に移送し、さらに加圧流体でもって水道管1に洗管ピグ3を圧送して、洗管ピグ3でもって水道管1の内面を擦り洗いし、水道管1を擦り洗いした洗管ピグ3を、水道管1から取り出し側の分岐管2に移送して外部に取り出す。この洗浄方法は、後端を回転動力源52に連結して先端に回転洗浄具50を連結している可撓性線材51を、分岐管2から水道管1に挿通して先端の回転洗浄具50を水道管1内に挿入し、回転動力源52で可撓性線材51を介して回転洗浄具50を回転して水道管1の内面の異物を除去し、その後、洗管ピグ3を分岐管2から水道管1に挿入して洗管ピグ3で水道管1を擦り洗いする。
The water pipe cleaning method of the present invention has the following configuration in order to achieve the above-described object.
The water pipe is washed by inserting a wash pipe pig 3 from a branch pipe 2 consisting of a fire hydrant on the feed side connected to the water pipe 1, an air pipe and a mud spout, and the inserted wash pipe pig 3 Is supplied to the branch pipe 2, and the washing pipe pig 3 is transferred from the branch pipe 2 into the water pipe 1 with the pressurized fluid, and further, the washing pipe pig is supplied to the water pipe 1 with the pressurized fluid. 3 is pumped, the inner surface of the water pipe 1 is rubbed with the washing pipe pig 3, the washing pipe pig 3 rubbed with the water pipe 1 is transferred from the water pipe 1 to the branch pipe 2 on the take-out side, and externally Take out. In this cleaning method, a flexible wire 51 having a rear end connected to a rotational power source 52 and a rotary cleaning tool 50 connected to the tip is inserted from the branch pipe 2 into the water pipe 1 and the tip rotary cleaning tool is inserted. 50 is inserted into the water pipe 1, the rotary cleaning tool 50 is rotated by the rotational power source 52 via the flexible wire 51 to remove foreign matters on the inner surface of the water pipe 1, and then the washing pipe pig 3 is branched. The pipe 2 is inserted into the water pipe 1 and the water pipe 1 is rubbed with the washing pipe pig 3.

本発明の請求項2の水道管の洗浄方法は、洗管ピグ3を水道管1から分岐管2に、または分岐管2から水道管1に移送する湾曲ガイド部41を有するガイドベラ40を、分岐管2から水道管1の連結部9に向かって挿入し、このガイドベラ40に沿って、先端に回転洗浄具50を連結している可撓性線材51を挿入して、水道管1の異物を除去する。この洗浄方法は、ガイドベラ40を、先端に回転洗浄具50を連結している可撓性線材51の挿入と、洗管ピグ3の分岐管2と水道管1との間の移送ガイドに併用する。   The method for cleaning a water pipe according to claim 2 of the present invention branches a guide spatula 40 having a curved guide portion 41 for transferring the washing pipe pig 3 from the water pipe 1 to the branch pipe 2 or from the branch pipe 2 to the water pipe 1. Insert the flexible wire 51 connecting the rotary cleaning tool 50 at the tip along the guide spatula 40 from the pipe 2 toward the connecting portion 9 of the water pipe 1, and remove foreign matter from the water pipe 1. Remove. In this cleaning method, the guide spatula 40 is used in combination with the insertion of the flexible wire 51 that connects the rotary cleaning tool 50 to the tip and the transfer guide between the branch pipe 2 and the water pipe 1 of the wash pipe pig 3. .

さらに、本発明の請求項3の水道管の洗浄方法は、回転洗浄具50に回転ブラシ53を使用する。   Further, in the water pipe cleaning method according to claim 3 of the present invention, the rotary brush 53 is used in the rotary cleaning tool 50.

本発明の請求項4の水道管の洗浄方法は、分岐管2から水道管1に挿入する洗管ピグ3に、本体ピグ4の先端にロッド状又は紐状の折曲部5を介してガイドピグ5を連結している洗管ピグ3を使用する。   The water pipe cleaning method according to claim 4 of the present invention is such that a guide pipe is inserted into a pipe pipe 3 inserted into the water pipe 1 from the branch pipe 2 through a rod-like or string-like bent part 5 at the tip of the main body pig 4. Use wash tube pig 3 connecting 5.

さらに、本発明の請求項5の水道管の洗浄方法は、分岐管2から水道管1に挿入する洗管ピグ3に、本体ピグ4の先端に折曲部6を介して、外径を80mmよりも太い円柱状または球形状のガイドピグ5を連結している洗管ピグ3を使用する。   Furthermore, in the water pipe cleaning method according to claim 5 of the present invention, the outer diameter of the water pipe is inserted into the water pipe 3 inserted from the branch pipe 2 into the water pipe 1 through the bent portion 6 at the tip of the main body pig 4. The washing tube pig 3 which connects the thicker cylindrical or spherical guide pig 5 is used.

本発明の請求項6の水道管の洗浄方法は、分岐管2に補修弁28を連結している水道管1を洗浄する方法であって、回転洗浄具50を補修弁28に通過させて分岐管2から水道管1に挿入して洗浄する。   The water pipe cleaning method according to claim 6 of the present invention is a method for cleaning the water pipe 1 in which the repair valve 28 is connected to the branch pipe 2, and the branch is made by passing the rotary cleaning tool 50 through the repair valve 28. Insert from pipe 2 into water pipe 1 and wash.

本発明の請求項7の水道管の洗浄方法は、補修弁28を閉じる状態で、両フランジ短管10の第1フランジ10Aを補修弁28を介して分岐管2に連結し、他方のフランジ10bである第2フランジ10Bには止水フランジ蓋56を固定し、両フランジ短管10の内部に回転洗浄具50を配置して、この回転洗浄具50に連結している可撓性線材51を止水フランジ蓋56に回転できるが水密構造として貫通させる準備工程と、補修弁28を開いて回転洗浄具50を両フランジ短管10から分岐管2を通過して水道管1に挿入して水道管1を洗浄する洗浄工程と、回転洗浄具50を分岐管2から両フランジ短管10内に後退させた後、補修弁28を閉じる回収工程とで水道管を洗浄する。   In the water pipe cleaning method according to claim 7 of the present invention, the first flange 10A of both the short flange pipes 10 is connected to the branch pipe 2 through the repair valve 28 in a state where the repair valve 28 is closed, and the other flange 10b. The waterproof flange lid 56 is fixed to the second flange 10B, and the rotary cleaning tool 50 is disposed inside the short flanges 10 of both flanges, and the flexible wire 51 connected to the rotary cleaning tool 50 is provided. A preparatory process that can rotate to the water stop flange lid 56 but penetrates as a watertight structure, and opens the repair valve 28 and the rotary cleaning tool 50 passes through the branch pipe 2 from both flange short pipes 10 and is inserted into the water pipe 1 to supply water. The water pipe is cleaned by a cleaning process for cleaning the pipe 1 and a recovery process for retracting the rotary cleaning tool 50 from the branch pipe 2 into the short flanges 10 and then closing the repair valve 28.

本発明の請求項8の水道管の洗浄方法は、両フランジ短管10に排水弁57を連結して、排水弁57で排水しながら回転洗浄具50で水道管1を洗浄する。   In the water pipe cleaning method according to the eighth aspect of the present invention, the drainage valve 57 is connected to the both short flange pipes 10, and the water pipe 1 is washed with the rotary cleaning tool 50 while draining with the drainage valve 57.

本発明の水道管の洗浄方法は、水道管に洗管ピグの挿入管や排出管を連結することなく、水道管に洗管ピグを挿入し、また水道管から洗管ピグを取り出しして、極めて簡単かつ容易に、しかも能率よく水道管を洗浄できる特長がある。とくに、本発明の洗浄方法は、古くて内面に多量の異物が付着する水道管をも簡単に能率よく洗浄できる特徴がある。それは、本発明の洗浄方法が、先端に回転洗浄具を連結している可撓性線材を分岐管から水道管に挿通して、先端の回転洗浄具を水道管の内部に挿入し、この状態で可撓性線材で回転洗浄具を回転して水道管の内面の異物を除去し、綺麗になった水道管に洗管ピグを入れて擦り洗いし、擦り洗いした洗管ピグを分岐管から取り出すからである。   The water pipe cleaning method of the present invention, without connecting the insertion pipe or discharge pipe of the washing pipe to the water pipe, inserting the washing pipe pig into the water pipe, and taking out the washing pipe pig from the water pipe, It has the advantage that water pipes can be cleaned very easily and easily. In particular, the cleaning method of the present invention is characterized in that it can easily and efficiently clean a water pipe that is old and has a large amount of foreign matter adhering to its inner surface. This is because the cleaning method of the present invention inserts the flexible wire connecting the rotary cleaning tool at the tip into the water pipe from the branch pipe, and inserts the rotary cleaning tool at the tip into the water pipe. Rotate the rotary cleaning tool with a flexible wire to remove foreign matter on the inner surface of the water pipe, put the washing pipe pig into the clean water pipe and rub it, and remove the washed washing pipe pig from the branch pipe It is because it takes out.

とくに、本発明の洗浄方法は、水道管にすでに連結している消火栓と空気管と泥吐き部のいずれかからなる分岐管を利用することに加えて、水道管の分岐管に連結される部分を回転洗浄具で綺麗にした後、洗管ピグを水道管に挿入し、また水道管から洗管ピグを取り出しするので、簡単かつ容易に、しかも能率良く水道管を洗浄できる。   In particular, the cleaning method of the present invention uses a branch pipe consisting of any one of a fire hydrant, an air pipe and a mud spout already connected to the water pipe, and a portion connected to the branch pipe of the water pipe. After cleaning with a rotary cleaning tool, the washing pipe pig is inserted into the water pipe, and the washing pipe pig is taken out of the water pipe, so that the water pipe can be easily and easily cleaned.

さらに、本発明の請求項2の洗浄方法は、分岐管から水道管の連結部に向かって、ガイドベラを挿入し、このガイドベラに沿って先端に回転洗浄具を連結している可撓性線材を挿入する。とくに、この洗浄方法は、ガイドベラを、先端に回転洗浄具を連結している可撓性線材の挿入と、分岐管と水道管の間の洗管ピグの移送ガイドに併用するので、ガイドベラでもって、回転洗浄具のある可撓性線材をスムーズに分岐管から水道管に挿入でき、また、洗管ピグを分岐管と水道管との間でスムーズに移送できる。   Furthermore, in the cleaning method of claim 2 of the present invention, a flexible wire material is inserted in which a guide spatula is inserted from the branch pipe toward the connecting part of the water pipe, and a rotary cleaning tool is connected to the tip along the guide spatula. insert. In particular, this cleaning method uses the guide spatula in combination with the insertion of a flexible wire having a rotary cleaning tool connected to the tip and the transfer guide for the washing pipe pig between the branch pipe and the water pipe. The flexible wire with the rotary cleaning tool can be smoothly inserted into the water pipe from the branch pipe, and the washing pipe pig can be smoothly transferred between the branch pipe and the water pipe.

さらに、本発明の請求項3の洗浄方法は、回転洗浄具に回転ブラシを使用するので、水道管の内面に付着するサビ瘤などの異物を能率よく除去できる。   Furthermore, since the cleaning method of claim 3 of the present invention uses a rotating brush for the rotating cleaning tool, it is possible to efficiently remove foreign matters such as rust on the inner surface of the water pipe.

さらに、本発明の請求項4の洗浄方法は、水道管の内面を効率よく洗浄しながら、細い分岐管と太い水道管にスムーズに洗管ピグを移送して、簡単に能率よく、しかも詰まらないように取り出しできる特長がある。それは、この洗浄方法が、本体ピグの先端に折曲部を介して本体ピグよりも小さい外形のガイドピグを連結している洗管ピグを使用するからである。この構造の洗管ピグは、水道管から分岐管に移送する状態において、細い分岐管にガイドピグがあって、本体ピグが水道管にある状態で、分岐管のガイドピグを加圧流体で圧送させて、折曲部を介して水道管内の本体ピグを引っ張って分岐管に移送できる。したがって、水道管から細い分岐管にスムーズに洗浄ピグを移送させて効率よく洗浄できる。   Further, according to the cleaning method of claim 4 of the present invention, the washing pipe pig is smoothly transferred to the thin branch pipe and the thick water pipe while efficiently washing the inner surface of the water pipe, and it is easily and efficiently clogged. There is a feature that can be taken out. This is because this cleaning method uses a washing tube pig in which a guide pig having an outer shape smaller than that of the main body pig is connected to the front end of the main body pig through a bent portion. The wash pipe pig of this structure is such that when it is transferred from the water pipe to the branch pipe, there is a guide pig in the thin branch pipe, and the main body pig is in the water pipe, and the guide pig of the branch pipe is pumped with pressurized fluid. The main body pig in the water pipe can be pulled through the bent portion and transferred to the branch pipe. Therefore, the cleaning pig can be smoothly transferred from the water pipe to the thin branch pipe, and can be efficiently cleaned.

本発明の請求項7の水道管の洗浄方法は、補修弁を介して分岐管に連結される両フランジ短管を止水フランジ蓋で閉塞しながら、止水フランジ蓋を水密に貫通する可撓性線材で回転洗浄具を回転させて洗浄するので、可撓性線材の挿通部分における水漏れを防止しながら、回転洗浄具を水道管に挿入して水道管を洗浄できる。とくに、両フランジ短管の第1フランジを補修弁を介して分岐管に連結し、第2フランジに止水フランジ蓋を固定するので、この止水フランジ蓋を取り外すことで、洗管ピグの挿入や取り出しを簡単かつ容易にして、洗管ピグでもって能率よく水道管を洗浄できる。   According to a seventh aspect of the present invention, there is provided a water pipe cleaning method in which a flexible pipe that tightly penetrates a water stop flange lid while closing both flange short pipes connected to a branch pipe via a repair valve with a water stop flange cover. Since the rotating cleaning tool is rotated and cleaned with the conductive wire, the rotating cleaning tool can be inserted into the water pipe and the water pipe can be cleaned while preventing water leakage at the insertion portion of the flexible wire. In particular, the first flange of both flanged short pipes is connected to the branch pipe via the repair valve, and the water stop flange cover is fixed to the second flange. By removing this water stop flange cover, the washing pipe pig can be inserted. The water pipe can be washed efficiently with the washing pipe pig.

さらに、本発明の請求項8の洗浄方法は、両フランジ短管に排水弁を連結して、排水弁で排水しながら回転洗浄具で水道管を洗浄するので、発生する汚濁水を排水弁から排水しながら洗浄できる。とくに、この洗浄方法は、汚濁水を排水弁から排水しながら洗浄できることから、水道管内を有圧の状態として、すなわち断水することなく、水道管や分岐管を回転洗浄具で洗浄できる。このように、水道管を有圧の状態で回転洗浄具で洗浄する方法は、洗管ピグで洗浄する前工程となる回転洗浄具による洗浄に、制限のある断水時間を費やすことなく、いいかえると、洗管ピグで水道管を洗浄する作業に必要な断水時間を十分に確保しながら水道管を回転洗浄具で洗浄できる。さらに、水道管の断水時間に制限を受けることなく回転洗浄具で水道管を洗浄できるので、回転洗浄具による洗浄に十分な時間をかけて、確実かつ綺麗に洗浄できる特徴もある。   Further, in the cleaning method according to claim 8 of the present invention, the drainage valve is connected to the short flanges of both flanges, and the water pipe is washed with the rotary cleaning tool while draining with the drainage valve. Can be washed while draining. In particular, in this cleaning method, since the polluted water can be washed while draining from the drain valve, the water pipe and the branch pipe can be washed with a rotary cleaning tool in a state where the inside of the water pipe is in a pressurized state, that is, without being cut off. In this way, the method of cleaning the water pipe with a rotary cleaning tool in a pressured state can be said to use a rotary cleaning tool, which is the previous process of cleaning with a cleaning pipe pig, without spending a limited water shut-off time. The water pipe can be washed with a rotary washing tool while ensuring sufficient water shut-off time necessary for the operation of washing the water pipe with the washing pipe pig. Furthermore, since the water pipe can be cleaned with the rotary cleaning tool without being limited by the water shutoff time of the water pipe, there is also a feature that the cleaning with the rotary cleaning tool takes a sufficient time and can be reliably and cleanly cleaned.

以下、本発明の実施例を図面に基づいて説明する。ただし、以下に示す実施例は、本発明の技術思想を具体化するための水道管の洗浄方法とこれに使用する洗管ピグを例示するものであって、本発明は洗浄方法と洗管ピグを以下に特定しない。   Embodiments of the present invention will be described below with reference to the drawings. However, the examples shown below illustrate a water pipe cleaning method for embodying the technical idea of the present invention and a washing pipe pig used therefor, and the present invention relates to the cleaning method and the washing pipe pig. Is not specified below.

さらに、この明細書は、特許請求の範囲を理解しやすいように、実施例に示される部材に対応する番号を、「特許請求の範囲」および「課題を解決するための手段の欄」に示される部材に付記している。ただ、特許請求の範囲に示される部材を、実施例の部材に特定するものでは決してない。   Further, in this specification, for easy understanding of the scope of claims, numbers corresponding to the members shown in the embodiments are indicated in the “claims” and “means for solving problems” sections. It is added to the members. However, the members shown in the claims are not limited to the members in the embodiments.

図1に示すように、地中に埋設している水道管1は、分岐管2を連結している。分岐管2は、たとえば、消火栓と空気管と泥吐き部のいずれかである。水道管1は、これらの分岐管2を所定の間隔で連結している。これらの分岐管2は、先端を地上に設けている。水道管1に連結しているこれらの分岐管2を利用して、洗管ピグ3を分岐管2から水道管1に入れ、また水道管1を洗浄した洗管ピグ3を水道管1から外部に取り出す。これらの分岐管2は、先端を地面から表出させているので、ここから洗管ピグ3を水道管1に入れることによって、地面を掘り起こすことなく地中に埋設する水道管1に洗管ピグ3を入れることができ、また地中の水道管1から洗管ピグ3を外部に取り出しできる。水道管1に入れられた洗管ピグ3は、加圧流体で圧送されて水道管1の内部を移動する。移動する洗管ピグ3は、表面で水道管1の内面を擦り、水道管1の内面に付着する汚れや異物、あるいは錆等を除去して綺麗に洗浄する。   As shown in FIG. 1, a water pipe 1 buried in the ground is connected to a branch pipe 2. The branch pipe 2 is any one of a fire hydrant, an air pipe, and a mud spout, for example. The water pipe 1 connects these branch pipes 2 at a predetermined interval. These branch pipes 2 are provided with tips on the ground. Using these branch pipes 2 connected to the water pipe 1, the washing pipe pig 3 is put into the water pipe 1 from the branch pipe 2, and the washing pipe pig 3 that has washed the water pipe 1 is removed from the water pipe 1 to the outside. Take out. Since these branch pipes 2 have their tips exposed from the ground, by putting a wash pipe pig 3 into the water pipe 1 from here, the wash pipe pigs are embedded in the water pipe 1 buried in the ground without digging up the ground. 3 and the washing pipe pig 3 can be taken out from the underground water pipe 1. The washing pipe pig 3 placed in the water pipe 1 is pumped with a pressurized fluid and moves inside the water pipe 1. The moving washing pipe pig 3 is cleaned cleanly by rubbing the inner surface of the water pipe 1 on the surface to remove dirt, foreign matter, rust, etc. adhering to the inner surface of the water pipe 1.

水道管1の特定の領域を洗管ピグ3で洗浄するとき、水道管1に洗管ピグ3を入れる分岐管2の外側と、水道管1から洗管ピグ3を取り出す分岐管2の外側を仕切弁8で閉塞する。一対の仕切弁8で水道管1の特定の領域を閉塞する状態で、図2に示すように、分岐管2から水道管1に向かってガイドベラ40を挿入した後、水道管1と分岐管2との連結部9の内面を回転洗浄具50で綺麗にしてこれを分岐管2から取り出し、その後、図3に示すように、分岐管2に洗管ピグ3を入れ、この洗管ピグ3の背面に加圧流体を供給して、洗管ピグ3をガイドベラ40の湾曲ガイド部41で案内しながら、分岐管2から水道管1に移送し、さらに水道管1の内部を移動させる。水道管1を洗浄した洗管ピグ3は、図5に示すように、続いて供給される加圧流体で、水道管1から分岐管2に圧送され、この分岐管2から外部に排出される。このとき、図4に示すように、取り出し側の分岐管2にも水道管1に向かってガイドベラ40を挿入して水道管1の内面を回転洗浄具50で綺麗にして、ガイドベラ40を残して回転洗浄具50を取り出し、取り出さないガイドベラ40の湾曲ガイド部41でもって、水道管1から分岐管2にスムーズに洗管ピグ3を移送する。   When a specific area of the water pipe 1 is washed with the washing pipe pig 3, the outside of the branch pipe 2 for inserting the washing pipe pig 3 into the water pipe 1 and the outside of the branch pipe 2 for taking out the washing pipe pig 3 from the water pipe 1 The gate valve 8 is closed. In a state where a specific region of the water pipe 1 is closed by the pair of gate valves 8, as shown in FIG. 2, after inserting the guide spatula 40 from the branch pipe 2 toward the water pipe 1, the water pipe 1 and the branch pipe 2 are inserted. Clean the inner surface of the connecting portion 9 with the rotary cleaning tool 50 and remove it from the branch pipe 2. Then, as shown in FIG. 3, the wash pipe pig 3 is put in the branch pipe 2, and the wash pipe pig 3 A pressurized fluid is supplied to the back surface, and the washing pipe pig 3 is transferred from the branch pipe 2 to the water pipe 1 while being guided by the curved guide portion 41 of the guide spatula 40, and further moved inside the water pipe 1. As shown in FIG. 5, the washing pipe pig 3 that has washed the water pipe 1 is pumped from the water pipe 1 to the branch pipe 2 by the pressurized fluid that is subsequently supplied, and is discharged from the branch pipe 2 to the outside. . At this time, as shown in FIG. 4, the guide spatula 40 is also inserted into the branch pipe 2 on the take-out side toward the water pipe 1 to clean the inner surface of the water pipe 1 with the rotary cleaning tool 50, leaving the guide spatula 40. The rotary washing tool 50 is taken out, and the washing pipe pig 3 is smoothly transferred from the water pipe 1 to the branch pipe 2 by the curved guide portion 41 of the guide spatula 40 that is not taken out.

加圧流体で水道管1を圧送される洗管ピグ3は、表面で水道管1の内面を擦り洗いしながら移動する。汚れの甚だしい水道管1は、洗管ピグ3を水道管1内に複数回移送する。繰り返し水道管1の内部に圧送される洗管ピグ3は、通過する毎に水道管1の内面を擦り洗いして綺麗にする。したがって、洗管ピグ3を水道管1に通過させる回数を多くして、水道管1の内面をより綺麗に洗浄できる。   The washing pipe pig 3 that is pumped through the water pipe 1 with the pressurized fluid moves while scrubbing the inner surface of the water pipe 1 with the surface. The heavily contaminated water pipe 1 transfers the washing pipe pig 3 into the water pipe 1 a plurality of times. The wash pipe pig 3 repeatedly pumped into the water pipe 1 is cleaned by scrubbing the inner surface of the water pipe 1 each time it passes. Therefore, the inner surface of the water pipe 1 can be cleaned more cleanly by increasing the number of times the washing pipe pig 3 is passed through the water pipe 1.

洗管ピグ3は、水道管1の内面に押圧される状態で移動して、水道管1の内面を綺麗に擦り洗いする。洗管ピグ3が水道管1の内面を押圧する力が弱くなると、能率よく擦り洗いできなくなる。したがって、洗管ピグ3は、弾性変形できる材料を水道管1の内径よりも太く加工して製作される。洗管ピグ3の外形と弾性は、水道管1内を圧送して移送でき、かつ水道管1の内面を所定の圧力で押圧して綺麗に擦り洗いできるように製作される。この洗管ピグ3は、水道管1の内部を圧送できるが、水道管1から細い分岐管2に移送するのが難しい。さらに分岐管2は、連結部9であるT字状のチーズを介して水道管1に連結されるので、水道管1から分岐管2に移送される洗管ピグ3は、水道管1と分岐管2の境界で移送方向を90度変更する必要があり、このことが、洗管ピグ3の移送を難しくする。   The washing pipe pig 3 moves while being pressed against the inner surface of the water pipe 1, and cleans the inner surface of the water pipe 1 cleanly. When the force with which the washing pipe pig 3 presses the inner surface of the water pipe 1 becomes weak, it becomes impossible to efficiently scrub. Accordingly, the washing pipe pig 3 is manufactured by processing a material that can be elastically deformed to be thicker than the inner diameter of the water pipe 1. The outer shape and elasticity of the washing tube pig 3 are manufactured so that the inside of the water pipe 1 can be pumped and transferred, and the inner surface of the water pipe 1 can be pressed with a predetermined pressure to be scrubbed cleanly. The washing pipe pig 3 can pump the inside of the water pipe 1, but is difficult to transfer from the water pipe 1 to the thin branch pipe 2. Furthermore, since the branch pipe 2 is connected to the water pipe 1 through the T-shaped cheese which is the connecting portion 9, the washing pipe pig 3 transferred from the water pipe 1 to the branch pipe 2 is branched from the water pipe 1. It is necessary to change the transfer direction by 90 degrees at the boundary of the tube 2, which makes the transfer of the washing tube pig 3 difficult.

水道管1から分岐管2に、また分岐管2から水道管1に洗管ピグ3をスムーズに移送するために、図3と図5の鎖線で示すように、分岐管2から水道管1に向かってガイドベラ40が挿入される。ガイドベラ40は、図6と図7に示すように、取り出し側の分岐管2や送り込み側の分岐管2から水道管1に向かって挿入されて、分岐管2から水道管1の底面に沿って湾曲する湾曲ガイド部41を先端に設けている。   In order to smoothly transfer the washing pipe pig 3 from the water pipe 1 to the branch pipe 2 and from the branch pipe 2 to the water pipe 1, as shown by the chain line in FIG. 3 and FIG. A guide spatula 40 is inserted. As shown in FIGS. 6 and 7, the guide spatula 40 is inserted from the branch pipe 2 on the take-out side and the branch pipe 2 on the feed side toward the water pipe 1 and extends from the branch pipe 2 along the bottom surface of the water pipe 1. A curved guide portion 41 that is curved is provided at the tip.

ガイドベラ40は、弾性変形できる板材、たとえば硬質のプラスチックや金属板で製作される。ガイドベラ40は、できる限り薄くして、洗管ピグ3をスムーズに移送できるようにする。ガイドベラ40の厚さは、たとえば、2mm以下、好ましくは1mm以下とする。厚すぎると、洗管ピグ3を移送する分岐管2や水道管1の実質的な内径を細くして、スムーズに移送できなくなるからである。ただ、ガイドベラ40が薄すぎると十分な強度を実現できず、移送する洗管ピグ3で曲がってスムーズに移送できなくなる。したがって、ガイドベラ40は、洗管ピグ3を水道管1から分岐管2に、また分岐管2から水道管1にスムーズに案内するように、たとえば0.1mm以上、好ましくは0.2mm以上、さらに好ましくは0.5mm以上とする。ただし、ガイドベラ40は、使用する材質により強度が異なるので、厚さを前述の範囲には特定しない。弾性金属板からなるガイドベラは、硬質プラスチックのガイドベラに比較して十分な強度を有するので、薄くして十分な強度を実現する。弾性変形する板材からなるガイドベラ40は、分岐管2から水道管1に挿入するときに、先端の湾曲ガイド部41を分岐管2を通過できる直線状に弾性変形できる。直線状に弾性変形されて分岐管2を通過する湾曲ガイド部41は、分岐管2と水道管1との境界まで挿入されて、先端を水道管1の底面に接触させる位置まで挿入されると、水道管1の底面の水平面から分岐管2の内面の垂直面に沿って湾曲する形状に復元する。   The guide spatula 40 is made of a plate material that can be elastically deformed, for example, a hard plastic or a metal plate. The guide spatula 40 is made as thin as possible so that the washing tube pig 3 can be smoothly transferred. The thickness of the guide spatula 40 is, for example, 2 mm or less, preferably 1 mm or less. This is because if the thickness is too thick, the substantial inner diameter of the branch pipe 2 and the water pipe 1 for transferring the washing pipe pig 3 is reduced, and the pipe cannot be smoothly transferred. However, if the guide spatula 40 is too thin, sufficient strength cannot be realized, and it cannot be smoothly transferred because it is bent by the transfer pipe 3 to be transferred. Therefore, the guide spatula 40 is, for example, 0.1 mm or more, preferably 0.2 mm or more, so as to smoothly guide the washing pipe pig 3 from the water pipe 1 to the branch pipe 2 and from the branch pipe 2 to the water pipe 1. Preferably it is 0.5 mm or more. However, since the strength of the guide spatula 40 varies depending on the material used, the thickness is not specified in the above range. The guide spatula made of an elastic metal plate has sufficient strength as compared with a hard plastic guide spatula, so it is thinned to achieve sufficient strength. The guide spatula 40 made of a plate material that is elastically deformed can be elastically deformed into a linear shape that can pass through the branch pipe 2 through the curved guide portion 41 at the tip when inserted into the water pipe 1 from the branch pipe 2. When the curved guide portion 41 that is elastically deformed in a straight line and passes through the branch pipe 2 is inserted to the boundary between the branch pipe 2 and the water pipe 1 and inserted to a position where the tip contacts the bottom surface of the water pipe 1. Then, the shape is restored from the horizontal surface of the bottom surface of the water pipe 1 to the shape curved along the vertical surface of the inner surface of the branch pipe 2.

ガイドベラ40は、水道管1と分岐管2の境界に湾曲ガイド部41を配置して、この湾曲ガイド部41でもって、水道管1から分岐管2に、また分岐管2から水道管1に洗管ピグ3をスムーズに移送する。したがって、湾曲ガイド部41は、図2ないし図7に示すように、先端の接線方向を水道管1の底面の水平方向として、他端の接線方向を分岐管2の内面の垂直方向とするように内側に湾曲している。湾曲ガイド部41が湾曲する曲率半径(r)は、好ましくは水道管1の直径(D1)にほぼ等しくする。曲率半径(r)を水道管1の直径(D1)とする湾曲ガイド部41は、水道管1から分岐管2に、また分岐管2から水道管1にスムーズに洗管ピグ3を移送できる。さらに、ガイドベラは、湾曲ガイド部の曲率半径(r)を水道管の直径(D1)よりも大きくして、洗管ピグを水道管から分岐管に、また分岐管から水道管によりスムーズに移送できる。湾曲ガイド部の曲率半径(r)を大きくするガイドベラは、弾性変形する板材で製作して、分岐管に挿入するときには、分岐管を通過できる直線状に弾性変形して、湾曲ガイド部を分岐管と水道管の境界まで挿入する。ただし、ガイドベラは、湾曲ガイド部の曲率半径(r)を分岐管の直径(D2)に等しくし、さらに分岐管の直径(D2)よりも小さくして、洗管ピグを水道管から分岐管に、また分岐管から水道管に移送することもできる。したがって、本発明は、湾曲ガイド部の曲率半径(r)を前記の範囲に特定するものではないが、好ましくは、湾曲ガイド部の曲率半径(r)を大きくして、洗管ピグを水道管と分岐管にスムーズに移送する。   In the guide spatula 40, a curved guide part 41 is arranged at the boundary between the water pipe 1 and the branch pipe 2, and the curved guide part 41 is used to wash the water pipe 1 from the water pipe 1 to the branch pipe 2 and from the branch pipe 2 to the water pipe 1. Pipe pipe 3 is transported smoothly. Therefore, as shown in FIGS. 2 to 7, the curved guide portion 41 has the tangential direction at the tip as the horizontal direction of the bottom surface of the water pipe 1 and the tangential direction at the other end as the vertical direction of the inner surface of the branch pipe 2. Curved inward. The radius of curvature (r) at which the curved guide portion 41 is curved is preferably substantially equal to the diameter (D1) of the water pipe 1. The curved guide portion 41 having the radius of curvature (r) as the diameter (D1) of the water pipe 1 can smoothly transfer the washing pipe pig 3 from the water pipe 1 to the branch pipe 2 and from the branch pipe 2 to the water pipe 1. Further, the guide spatula can smoothly transfer the washing pipe pig from the water pipe to the branch pipe and from the branch pipe to the water pipe by making the curvature radius (r) of the curved guide portion larger than the diameter (D1) of the water pipe. . A guide spatula that increases the radius of curvature (r) of the curved guide portion is made of a plate material that is elastically deformed, and when inserted into the branch pipe, it is elastically deformed into a straight line that can pass through the branch pipe, and the curved guide portion is made into a branch pipe. Insert to the boundary of the water pipe. However, in the guide spatula, the radius of curvature (r) of the curved guide portion is made equal to the diameter (D2) of the branch pipe and further smaller than the diameter (D2) of the branch pipe, and the washing pipe pig is changed from the water pipe to the branch pipe. It can also be transferred from the branch pipe to the water pipe. Therefore, the present invention does not specify the radius of curvature (r) of the curved guide portion within the above range, but preferably, the radius of curvature (r) of the curved guide portion is increased to make the washing pipe pig a water pipe. And smoothly transfer to the branch pipe.

ガイドベラ40は、図8に示すように、長手方向に直交する方向の断面形状である横断面形状を、分岐管2と水道管1の内面に沿う溝型に湾曲する形状としている。図のガイドベラ40の幅(W)は、分岐管2と水道管1の全周の1/2に沿う幅よりも狭く、また分岐管2と水道管1の全周の1/4に沿う幅よりも広くしている。ただ、ガイドベラの幅(W)は、分岐管と水道管の全周の1/4に沿う幅よりも狭くすることもできる。ガイドベラ40は、幅(W)を広くして、洗管ピグ3をスムーズに水道管1から分岐管2に、また分岐管2から水道管1に移送できる。ただ、ガイドベラは、幅(W)が広くなると、分岐管に通過させる湾曲ガイド部を、直線状に弾性変形させるのが難しくなる。反対にガイドベラは、幅(W)を狭くして、分岐管に通過させる湾曲ガイド部を直線状に弾性変形しやすくできる。このため、幅(W)の狭いガイドベラは、湾曲ガイド部の曲率半径(r)を大きくできる。湾曲ガイド部の曲率半径(r)が大きいことは、洗管ピグを水道管と分岐管とにスムーズに移送でき、またガイドベラの幅(W)が狭いことは、洗管ピグを水道管と分岐管とにスムーズに移送するのを難しくする。したがって、ガイドベラ40の幅(W)は、湾曲ガイド部41の曲率半径(r)を考慮し、さらにガイドベラ40の材質等を考慮して最適値に設定される。   As shown in FIG. 8, the guide spatula 40 has a cross-sectional shape that is a cross-sectional shape in a direction orthogonal to the longitudinal direction, curved in a groove shape along the inner surfaces of the branch pipe 2 and the water pipe 1. The width (W) of the guide spatula 40 in the figure is narrower than the width along the entire circumference of the branch pipe 2 and the water pipe 1, and the width along the quarter of the entire circumference of the branch pipe 2 and the water pipe 1. Than wider. However, the width (W) of the guide spatula can be made narrower than the width along ¼ of the entire circumference of the branch pipe and the water pipe. The guide spatula 40 can widen the width (W) and smoothly transfer the washing pipe pig 3 from the water pipe 1 to the branch pipe 2 and from the branch pipe 2 to the water pipe 1. However, when the width of the guide spatula becomes wide, it becomes difficult to elastically deform the curved guide portion that is passed through the branch pipe in a straight line. On the other hand, the guide spatula can narrow the width (W), and can easily elastically deform the curved guide portion that passes through the branch pipe in a straight line. For this reason, a guide spatula with a narrow width (W) can increase the radius of curvature (r) of the curved guide portion. The curvature radius (r) of the curved guide part is large, so that the washing pipe pig can be smoothly transferred to the water pipe and the branch pipe. The narrow width (W) of the guide spatula means that the washing pipe pig is branched from the water pipe. Makes it difficult to transfer smoothly to and from the tube. Therefore, the width (W) of the guide spatula 40 is set to an optimum value in consideration of the curvature radius (r) of the curved guide part 41 and further considering the material of the guide spatula 40 and the like.

さらに、図9ないし図11に示すガイドベラ40は、湾曲ガイド部41を、縦に伸びる複数の切り込み46でもって複数の櫛片47に分割している。図のガイドベラ40は、湾曲ガイド41を7本に分割する櫛片47としている。ただし、ガイドベラは、湾曲ガイド部を4〜15本に分割された櫛片とすることもできる。このガイドベラ40は、所定の幅の弾性金属板で製作される。所定の幅の弾性金属板は、横断面形状を分岐管2と水道管1の内面に沿う溝型に湾曲する形状としている。このガイドベラ40は、金属板の幅(W)を、分岐管2の全周の1/2に沿う幅よりも狭く、また分岐管2の全周の1/4に沿う幅よりも広くしている。分割された複数の櫛片47からなる湾曲ガイド部41は、後端から先端に向かって次第に切り込み46の横幅を広くする形状に弾性的に拡開している。弾性的に拡開される櫛片47の先端の全幅(H)は、水道管1の全周に沿う幅の約半分としている。ただし、拡開される櫛片の先端の全幅(H)は、水道管の全周に沿う幅の約1/4よりも広く、3/4よりも狭くすることができる。   Further, the guide spatula 40 shown in FIGS. 9 to 11 divides the curved guide portion 41 into a plurality of comb pieces 47 with a plurality of cuts 46 extending vertically. The illustrated guide spatula 40 is a comb piece 47 that divides the curved guide 41 into seven pieces. However, the guide spatula may be a comb piece in which the curved guide portion is divided into 4 to 15 pieces. The guide spatula 40 is made of an elastic metal plate having a predetermined width. The elastic metal plate having a predetermined width has a cross-sectional shape curved into a groove shape along the inner surfaces of the branch pipe 2 and the water pipe 1. In this guide spatula 40, the width (W) of the metal plate is narrower than the width along half of the entire circumference of the branch pipe 2, and wider than the width along quarter of the whole circumference of the branch pipe 2. Yes. The curved guide portion 41 made up of the plurality of divided comb pieces 47 is elastically expanded into a shape that gradually increases the lateral width of the cut 46 from the rear end toward the tip. The full width (H) of the tip of the comb piece 47 that is elastically expanded is about half the width along the entire circumference of the water pipe 1. However, the full width (H) of the tip of the comb piece to be expanded can be wider than about 1/4 of the width along the entire circumference of the water pipe, and can be narrower than 3/4.

以上のガイドベラ40は、図10の矢印で示すように、櫛片47の切り込み幅を狭くするように変形させて全体の横幅を狭くして、湾曲ガイド部41を分岐管2から水道管1に挿入する。複数の櫛片47に分割された湾曲ガイド部41は、分岐管2から太い水道管1に挿入されると、櫛片47が弾性復元力で水道管1の内部で拡開される。水道管1に挿入されてその内部で櫛片47を拡開状態とする湾曲ガイド部41は、太い水道管1から細い分岐管2に洗管ピグ3をスムーズに案内し、また、細い分岐管2から太い水道管1に洗管ピグ3をスムーズに案内する。それは、分割された櫛片47が、分岐管2から水道管1に次第に拡開して、洗管ピグ3を分岐管2から水道管1に、また水道管1から分岐管2に案内するからである。このガイドベラ40は、分岐管2から引き上げるときに、分割された櫛片47が互いに接近するように弾性変形して、水道管1よりも細い分岐管2からスムーズに引き抜きできる。   As shown by the arrow in FIG. 10, the above guide spatula 40 is deformed so as to narrow the cut width of the comb piece 47 to narrow the entire lateral width, and the curved guide portion 41 is changed from the branch pipe 2 to the water pipe 1. insert. When the curved guide portion 41 divided into the plurality of comb pieces 47 is inserted into the thick water pipe 1 from the branch pipe 2, the comb pieces 47 are expanded inside the water pipe 1 by elastic restoring force. The curved guide portion 41 that is inserted into the water pipe 1 and expands the comb piece 47 therein smoothly guides the wash pipe pig 3 from the thick water pipe 1 to the thin branch pipe 2, and the thin branch pipe Smoothly guide the wash pipe pig 3 from 2 to the thick water pipe 1. That is because the divided comb pieces 47 gradually expand from the branch pipe 2 to the water pipe 1 and guide the washing pipe pig 3 from the branch pipe 2 to the water pipe 1 and from the water pipe 1 to the branch pipe 2. It is. When the guide spatula 40 is pulled up from the branch pipe 2, it is elastically deformed so that the divided comb pieces 47 approach each other, and can be smoothly pulled out from the branch pipe 2 thinner than the water pipe 1.

図2ないし図5に示すガイドベラ40は、送り込み側の分岐管2あるいは取り出し側の分岐管2の開口端に連結された補修弁28に、両フランジ短管10を介して三フランジY字管11を連結した後、三フランジY字管11の直管11Aから、水道管1に向かって挿入している。このガイドベラ40は、詳細には後述するが、洗管ピグ3を送り込み側の分岐管2から水道管1に移送するときに、送り込み側の分岐管2に挿入され、水道管1を洗浄した洗管ピグ3を、水道管1から取り出し側の分岐管2に移送させるときに、取り出し側の分岐管2に挿入される。したがって、ひとつのガイドベラ40を使用して、送り込み側の分岐管2と取り出し側の分岐管2の両方に使用しながら水道管1を洗浄できる特長がある。   A guide spatula 40 shown in FIGS. 2 to 5 is connected to the repair valve 28 connected to the opening end of the branch pipe 2 on the feeding side or the branch pipe 2 on the take-out side, and the three-flange Y-shaped pipe 11 via the both flange short pipes 10. After connecting, the straight pipe 11A of the three flange Y-shaped pipe 11 is inserted toward the water pipe 1. The guide spatula 40, which will be described in detail later, is inserted into the feeding side branch pipe 2 when the washing pipe pig 3 is transferred from the feeding side branch pipe 2 to the water pipe 1, and the washing pipe 1 is washed. When the pipe pig 3 is transferred from the water pipe 1 to the branch pipe 2 on the take-out side, it is inserted into the branch pipe 2 on the take-out side. Therefore, there is an advantage that the water pipe 1 can be cleaned using one guide spatula 40 while using it for both the branch pipe 2 on the feeding side and the branch pipe 2 on the take-out side.

ただ、本発明は、送り込み側の分岐管と取り出し側の分岐管の所定の位置にガイドベラを固定した状態で、洗管ピグを水道管内で移送して洗浄することもできる。このことを実現するガイドベラの一例を、図12ないし図14に示す。これらの図に示すガイドベラ40は、上端部の外周に沿って、水平方向に延びる鍔部42を設けている。このガイドベラ40は、図12、図13、図16及び図17に示すように、分岐管2の開口端に連結された補修弁28の上端のフランジ28bと、両フランジ短管10の下端のフランジ10bとで鍔部42を挟着して定位置に固定される。このガイドベラ40は、鍔部42から湾曲ガイド部41の先端までの長さ(T)が、挟着される補修弁28の上端から水道管1の底面までの距離と等しくなるように設計される。この構造で分岐管2に挿入されて、定位置に固定されるガイドベラ40は、洗管ピグ3を分岐管2から水道管1に、又は水道管1から分岐管2に移送させる場合においても、ガイドベラ40の位置がずれることなく、洗管ピグ3を確実に案内して、能率良く移送できる。   However, in the present invention, the washing pipe pig can be transferred and washed in the water pipe in a state where the guide spatula is fixed at predetermined positions of the branch pipe on the feeding side and the branch pipe on the take-out side. An example of a guide spatula for realizing this is shown in FIGS. The guide spatula 40 shown in these drawings is provided with a flange 42 extending in the horizontal direction along the outer periphery of the upper end. As shown in FIGS. 12, 13, 16, and 17, the guide spatula 40 includes a flange 28 b at the upper end of the repair valve 28 connected to the open end of the branch pipe 2, and a flange at the lower end of both flanged short pipes 10. 10b and the collar portion 42 is sandwiched and fixed in place. This guide spatula 40 is designed so that the length (T) from the collar part 42 to the tip of the curved guide part 41 is equal to the distance from the upper end of the repair valve 28 to be sandwiched to the bottom surface of the water pipe 1. . The guide spatula 40 inserted into the branch pipe 2 with this structure and fixed in place, even when the washing pipe pig 3 is transferred from the branch pipe 2 to the water pipe 1 or from the water pipe 1 to the branch pipe 2, Without the position of the guide spatula 40, the washing tube pig 3 can be reliably guided and efficiently transferred.

さらに、図12ないし図14に示すガイドベラ40は、鍔部42よりも上端部を、上端に向かって広がるテーパー状に成形している。このように、上端部をテーパー部43とするガイドベラ40は、図に示すように、テーパー部43の外周面を、両フランジ短管10のテーパー管10aの内面に沿う状態で配置できる。このガイドベラ40は、とくに、送り側において、テーパー部43の内面に沿って、洗管ピグ3を無理なく分岐管2に移送できる特長がある。ただ、ガイドベラは、必ずしも上端部にテーパー部を設ける必要はない。   Further, the guide spatula 40 shown in FIGS. 12 to 14 is formed such that the upper end portion is wider than the flange portion 42 and is tapered toward the upper end. Thus, as shown in the drawing, the guide spatula 40 having the upper end portion as the tapered portion 43 can arrange the outer peripheral surface of the tapered portion 43 in a state along the inner surface of the tapered tube 10a of both the flanged short tubes 10. The guide spatula 40 has a feature that the washing pipe pig 3 can be transferred to the branch pipe 2 without difficulty along the inner surface of the tapered portion 43 on the feeding side. However, the guide spatula does not necessarily need to be provided with a tapered portion at the upper end.

さらに、図12ないし図14に示すガイドベラ40は、補修弁28の弁本体28aに挿入される部分を細く成形して幅狭部44としている。これは、分岐管2の内径よりも細い補修弁28の弁本体28aの内面に沿ってガイドベラ40を配置するためである。このように、幅狭部44を有するガイドベラ40は、幅狭部44の外周面を補修弁28の弁本体28aの内面に沿う状態で無理なく配置して、洗管ピグをスムーズに移送できる。ただ、ガイドベラは、必ずしもこの幅狭部を設ける必要はない。たとえば、補修弁の弁本体の内径が分岐管の内径と等しい場合は、幅狭部を設けることなく、ガイドベラの外周面を補修弁の内面に沿う状態で配置でき、また、弁本体の内径が分岐管の内径より細い場合においても、弾性変形するガイドベラによって、ガイドベラの外周面を弁本体の内面に沿う状態で配置できるからである。   Further, the guide spatula 40 shown in FIGS. 12 to 14 has a narrow portion 44 formed by thinly forming a portion of the repair valve 28 to be inserted into the valve body 28a. This is because the guide spatula 40 is disposed along the inner surface of the valve body 28a of the repair valve 28 that is thinner than the inner diameter of the branch pipe 2. Thus, the guide spatula 40 having the narrow portion 44 can smoothly transfer the washing pipe pig by arranging the outer peripheral surface of the narrow portion 44 along the inner surface of the valve body 28a of the repair valve 28 without difficulty. However, it is not always necessary to provide the narrow portion of the guide spatula. For example, when the inner diameter of the valve body of the repair valve is equal to the inner diameter of the branch pipe, the outer peripheral surface of the guide spatula can be arranged along the inner surface of the repair valve without providing a narrow portion. This is because the outer periphery of the guide spatula can be arranged along the inner surface of the valve body by the guide spatula that is elastically deformed even when it is thinner than the inner diameter of the branch pipe.

さらに、図12ないし図15に示すガイドベラ40は、分岐管2に挿入した状態で、分岐管2の内面と対向する本体部45の幅(W)を分岐管2の全周のほぼ1/2に沿う幅としている。さらに、このガイドベラ40は、図12と図15に示すように、湾曲ガイド部41における幅を狭くして、湾曲ガイド部41を板状に近似させている。この形状のガイドベラ40は、ここを通過する洗管ピグ3をスムーズに方向転換させて、水道管1から分岐管2に、あるいは分岐管2から水道管1に速やかに移送できる特長がある。さらに、このガイドベラ40は、分岐管2に挿入するときに、湾曲ガイド部41を無理なく直線状に弾性変形できる特長がある。ただ、ガイドベラは、湾曲ガイド部における幅を狭くすることなく、全体の幅を等しくすることもできる。   Further, the guide spatula 40 shown in FIGS. 12 to 15 is inserted into the branch pipe 2 so that the width (W) of the main body 45 facing the inner surface of the branch pipe 2 is approximately ½ of the entire circumference of the branch pipe 2. It is set as the width along. Further, as shown in FIGS. 12 and 15, the guide spatula 40 narrows the width of the curved guide portion 41 to approximate the curved guide portion 41 to a plate shape. The guide spatula 40 having this shape has a feature that the washing pipe pig 3 passing therethrough can be smoothly transferred to the branch pipe 2 from the water pipe 1 or from the branch pipe 2 to the water pipe 1 quickly. Further, the guide spatula 40 has an advantage that the curved guide portion 41 can be elastically deformed linearly without difficulty when being inserted into the branch pipe 2. However, the guide spatula can also make the whole width equal, without narrowing the width | variety in a curved guide part.

さらに、図12のガイドベラ40は、湾曲ガイド部41の曲率半径(r)を、分岐管2の直径(D2)にほぼ等しくしている。このガイドベラ40は、分岐管2に挿通するときに、先端の湾曲ガイド部41を直線状に弾性変形させることなく挿入でき、あるいは、弾性変形させる量を少なくできる特長がある。ただ、湾曲ガイド部の曲率半径(r)は、これよりも小さくすることも、大きくすることもできる。   Furthermore, the guide spatula 40 in FIG. 12 has the curvature radius (r) of the curved guide portion 41 substantially equal to the diameter (D2) of the branch pipe 2. The guide spatula 40 can be inserted without elastically deforming the curved guide portion 41 at the tip when inserted into the branch pipe 2, or has an advantage that the amount of elastic deformation can be reduced. However, the curvature radius (r) of the curved guide portion can be made smaller or larger.

水道管1は、分岐管2との連結部9で洗管ピグ3をスムーズに移送することが大切である。それは、この部分で洗管ピグ3の移送方向を直角に曲げることから、この部分で洗管ピグ3が詰まりやすいからである。とくに、洗管ピグ3で洗浄する水道管1は、年月が経過して内面にサビ瘤等の異物が付着していることから、分岐管2との連結部9を綺麗にして洗管ピグ3をスムーズに移送することが大切である。とくに、異物は水道管1の底面に堆積しやすいので、水道管1の底面を綺麗にして洗管ピグ3をスムーズに移送することが大切である。   It is important for the water pipe 1 to smoothly transfer the washing pipe pig 3 at the connecting portion 9 with the branch pipe 2. This is because the washing pipe pig 3 is easily clogged in this portion because the transfer direction of the washing tube pig 3 is bent at a right angle in this portion. In particular, the water pipe 1 to be washed with the washing pipe pig 3 has foreign matters such as rust on the inner surface after the passage of time, so that the connecting portion 9 with the branch pipe 2 is cleaned to make the washing pipe pig. It is important to transport 3 smoothly. In particular, since foreign substances are likely to accumulate on the bottom surface of the water pipe 1, it is important to clean the bottom surface of the water pipe 1 and smoothly transfer the washing pipe pig 3.

図18は、水道管1の内面を綺麗にする方法を示している。この図において、水道管1の内面は回転洗浄具50で擦り洗いされる。この回転洗浄具50は可撓性線材51の先端に連結されて、可撓性線材51で回転される。可撓性線材51は、後端をモータやエンジン等の回転動力源52に連結して、これらの回転動力源52で回転される。さらに、可撓性線材51は、好ましくは可撓性のチューブ54に挿入している。   FIG. 18 shows a method for cleaning the inner surface of the water pipe 1. In this figure, the inner surface of the water pipe 1 is scrubbed with a rotary cleaning tool 50. The rotary cleaning tool 50 is connected to the tip of the flexible wire 51 and is rotated by the flexible wire 51. The flexible wire 51 is connected to a rotational power source 52 such as a motor or an engine at the rear end thereof, and is rotated by the rotational power source 52. Further, the flexible wire 51 is preferably inserted into a flexible tube 54.

図18の回転洗浄具50は回転ブラシ53である。回転ブラシ53は、回転軸に無数の金属線を放射状に固定している。回転ブラシ53は、回転されて金属線の先端で水道管1の内面を擦り洗いする。ただし、回転洗浄具には、回転して水道管の内面を擦り洗いできるすべてのもの、たとえば繊維の表面に研磨材を付着している不織布、研磨材を付着しない不織布、軟質のプラスチック発泡体、回転軸に放射状に無数の研磨シートを連結している回転ペーパーなども使用できる。回転洗浄具50は、図2と図4に示すように、分岐管2から水道管1に挿入される。変形できる線材や可撓性の研磨紙を回転軸に放射状に連結している回転洗浄具、すなわち回転軸に可撓性材を放射状に固定している回転洗浄具50は、回転時に遠心力で外径を大きくできる。したがって、この回転洗浄具50は、細い分岐管2から太い水道管1に案内して、水道管1の内面を広い面積で効率よく擦り洗いできる。また、不織布や軟質のプラスチック発泡体からなる弾性変形できる回転洗浄具は、細い分岐管を通過するときには細くなり、太い水道管に入れられると弾性的に復元力で太くなるので、水道管の内面を広い面積で効率よく擦り洗いできる。   The rotary cleaning tool 50 in FIG. 18 is a rotary brush 53. The rotating brush 53 has an infinite number of metal wires fixed radially to the rotating shaft. The rotating brush 53 is rotated to scrub the inner surface of the water pipe 1 with the tip of the metal wire. However, in the rotary cleaning tool, anything that can rotate and scrub the inner surface of the water pipe, such as a nonwoven fabric with an abrasive attached to the surface of the fiber, a non-abrasive nonwoven fabric, a soft plastic foam, Rotating paper or the like in which an infinite number of abrasive sheets are radially connected to the rotating shaft can also be used. As shown in FIGS. 2 and 4, the rotary cleaning tool 50 is inserted from the branch pipe 2 into the water pipe 1. A rotary cleaning tool in which a deformable wire or flexible abrasive paper is radially connected to a rotation shaft, that is, a rotary cleaning tool 50 in which a flexible material is radially fixed to the rotation shaft is subjected to centrifugal force during rotation. The outer diameter can be increased. Accordingly, the rotary cleaning tool 50 can guide the thin branch pipe 2 to the thick water pipe 1 and efficiently scrub the inner surface of the water pipe 1 in a wide area. In addition, an elastically deformable rotary cleaning tool made of non-woven fabric or soft plastic foam is thin when passing through a thin branch pipe, and elastically thickens when placed in a thick water pipe. Can be efficiently rubbed in a large area.

可撓性線材51は、回転動力源52に回転されて回転洗浄具50を回転する。したがって、変形できるが回転力を伝達できる可撓性の金属線や硬質のプラスチック線が使用される。可撓性線材51は、分岐管2から水道管1に挿入されて分岐管2と水道管1との連結部9で湾曲し、この湾曲された状態にあって回転洗浄具50を回転させる。分岐管2と水道管1との連結部9で所定の曲率半径で直角に曲がる可撓性線材51は、回転洗浄具50を分岐管2との連結部9から水道管1内に深く挿入できる。このため、この可撓性線材51は、水道管1の内部に深く回転洗浄具50を挿入してこれを回転して、水道管1を連結部9から深く奥まで擦り洗いできる。   The flexible wire 51 is rotated by the rotational power source 52 to rotate the rotary cleaning tool 50. Therefore, a flexible metal wire or a hard plastic wire that can be deformed but can transmit a rotational force is used. The flexible wire 51 is inserted into the water pipe 1 from the branch pipe 2 and is bent at the connecting portion 9 between the branch pipe 2 and the water pipe 1, and the rotary cleaning tool 50 is rotated in this curved state. The flexible wire 51 bent at a right angle with a predetermined radius of curvature at the connecting portion 9 between the branch pipe 2 and the water pipe 1 can insert the rotary cleaning tool 50 deeply into the water pipe 1 from the connecting portion 9 with the branch pipe 2. . For this reason, this flexible wire 51 can scrub the water pipe 1 deeply from the connecting part 9 by inserting the rotary cleaning tool 50 deeply into the water pipe 1 and rotating it.

可撓性線材51は、回転洗浄具50を水道管1の所定の位置に挿通できる長さを有する。この可撓性線材51は、図2、図4、及び図18に示すように、分岐管2の外部で後端を回転動力源52に連結する。回転動力源52は、可撓性線材51の後端を掴むチャック55を有し、このチャック55で可撓性線材51を掴んで回転させる。   The flexible wire 51 has a length that allows the rotary cleaning tool 50 to be inserted into a predetermined position of the water pipe 1. As shown in FIGS. 2, 4, and 18, the flexible wire 51 connects the rear end to the rotational power source 52 outside the branch pipe 2. The rotational power source 52 has a chuck 55 that grips the rear end of the flexible wire 51, and grips and rotates the flexible wire 51 with the chuck 55.

可撓性線材51を被覆する可撓性のチューブ54は、内部に回転洗浄具50を回転できるように挿通して、それ自体は変形できる可撓性を有すパイプである。この可撓性のチューブ54は、金属線や金属板を螺旋状に巻いて筒状として表面をプラスチックで被覆して製作される。ただ、この可撓性のチューブは、変形できる硬質のプラスチックパイプも使用できる。表面が可撓性のチューブ54で被覆される可撓性線材51は、分岐管2から水道管1に挿入して表面が回転しない。このため、回転する可撓性線材51が回転洗浄具50で水道管1を擦り洗いするときに、分岐管2や水道管1の接触部を損傷させない。ただ、可撓性線材は必ずしも可撓性のチューブで被覆する必要はない。   The flexible tube 54 that covers the flexible wire 51 is a pipe having flexibility that allows the rotary cleaning tool 50 to be inserted therein so that it can rotate and deform itself. The flexible tube 54 is manufactured by winding a metal wire or a metal plate in a spiral shape so that the surface is covered with plastic. However, this flexible tube can also be a hard plastic pipe that can be deformed. The flexible wire 51 whose surface is covered with the flexible tube 54 is inserted into the water pipe 1 from the branch pipe 2 and the surface does not rotate. For this reason, when the rotating flexible wire 51 scrubs the water pipe 1 with the rotary cleaning tool 50, the contact part of the branch pipe 2 and the water pipe 1 is not damaged. However, the flexible wire does not necessarily have to be covered with a flexible tube.

先端に回転洗浄具50を有する可撓性線材51は、ガイドベラ40を挿入した後、分岐管2に挿入される。ガイドベラ40は、先端に回転洗浄具50を連結している可撓性線材51を分岐管2から水道管1にスムーズに案内する。このため、先端に回転洗浄具50を連結している可撓性線材51は、好ましくはガイドベラ40を入れた状態で、分岐管2から水道管1に挿入される。ただ、ガイドベラを挿入することなく、先端に回転洗浄具50を連結している可撓性線材51を分岐管2から水道管1に挿入することもできる。この方法は、可撓性線材51の先端部を分岐管2から水道管1の方向に湾曲するように変形し、可撓性線材51を回転することなく分岐管2から水道管1に挿入してスムーズに案内できる。   The flexible wire 51 having the rotary cleaning tool 50 at the tip is inserted into the branch pipe 2 after the guide spatula 40 is inserted. The guide spatula 40 smoothly guides the flexible wire 51 connecting the rotary cleaning tool 50 to the tip from the branch pipe 2 to the water pipe 1. For this reason, the flexible wire 51 which has connected the rotary cleaning tool 50 to the front-end | tip is inserted in the water pipe 1 from the branch pipe 2 with the guide spatula 40 inserted preferably. However, it is also possible to insert the flexible wire 51 connecting the rotary cleaning tool 50 to the tip from the branch pipe 2 into the water pipe 1 without inserting the guide spatula. In this method, the distal end portion of the flexible wire 51 is deformed so as to bend in the direction from the branch pipe 2 to the water pipe 1, and the flexible wire 51 is inserted into the water pipe 1 from the branch pipe 2 without rotating. Can guide you smoothly.

さらに、図19と図20は、太い水道管1から細い分岐管2によりスムーズに移送できる独特の構造の洗管ピグ3を示す。この図の洗管ピグ3は、本体ピグ4と、この本体ピグ4の先端に、折曲部6を介して連結している本体ピグ4よりも小さい外形のガイドピグ5とを備える。   Further, FIGS. 19 and 20 show a washing tube pig 3 having a unique structure that can be smoothly transferred from the thick water pipe 1 to the thin branch pipe 2. The washing tube pig 3 in this figure includes a main body pig 4 and a guide pig 5 having an outer shape smaller than that of the main body pig 4 connected to the front end of the main body pig 4 via a bent portion 6.

本体ピグ4は、弾性変形材を円柱状に加工した弾性柱の表面に研磨層7を設けている。図の本体ピグ4は、先端部をテーパー状に細くしている。この本体ピグ4は、凹凸のある水道管1の内部をスムーズに引っかかることなく圧送される。また、分岐管2から水道管1に、また水道管1から分岐管2にスムーズに移送される。弾性柱の弾性変形材は、ウレタン樹脂やEVA等の軟質の合成樹脂発泡体である。合成樹脂発泡体は独立気泡を有する発泡体、または連続気泡を有する発泡体である。独立気泡を有する合成樹脂発泡体は、液体や気体の透過が少なく、加圧流体を透過させないので効率よく圧送できる。また、連続気泡の合成樹脂発泡体は、変形率を大きくして、水道管から細い分岐管にスムーズに移送できる。弾性変形材は、合成樹脂発泡体に代わって、ゴム状弾性体を気密に閉塞して、内部に気体を充填する構造等とすることもできる。   The main body pig 4 is provided with a polishing layer 7 on the surface of an elastic column obtained by processing an elastic deformable material into a cylindrical shape. The main body pig 4 shown in the drawing has a tapered tip. The main body pig 4 is pumped without being smoothly caught inside the uneven water pipe 1. Further, the water is smoothly transferred from the branch pipe 2 to the water pipe 1 and from the water pipe 1 to the branch pipe 2. The elastic deformation material of the elastic column is a soft synthetic resin foam such as urethane resin or EVA. The synthetic resin foam is a foam having closed cells or a foam having open cells. Synthetic resin foams having closed cells are less permeable to liquids and gases and do not allow pressurized fluid to pass through, so they can be pumped efficiently. In addition, the open cell synthetic resin foam can be smoothly transferred from a water pipe to a thin branch pipe by increasing the deformation rate. Instead of the synthetic resin foam, the elastic deformable material may have a structure in which a rubber-like elastic body is hermetically closed and gas is filled therein.

弾性柱の表面に設けている研磨層7は、繊維表面に研磨粒を付着した不織布が使用できる。この研磨層7は凹部のある水道管1の内面に面接触して、水道管1の内面を綺麗に擦り洗いできる。ただ、研磨層は、弾性柱の表面に研磨粒を付着して設けることもできる。また、本体ピグは、弾性柱を成形する合成樹脂発泡体に研磨粒を添加して発泡成形して、弾性柱の全体に研磨粒を分布することもできる。この本体ピグは、摩耗して小さくなっても、次々と表面に新しい研磨層ができるので、摩耗しても効果的に擦り洗いできる。   As the polishing layer 7 provided on the surface of the elastic column, a nonwoven fabric in which abrasive grains are attached to the fiber surface can be used. The polishing layer 7 is in surface contact with the inner surface of the water pipe 1 having the recesses, so that the inner surface of the water pipe 1 can be scrubbed cleanly. However, the polishing layer can also be provided by attaching abrasive grains to the surface of the elastic column. In addition, the main body pig can be foam-molded by adding abrasive grains to the synthetic resin foam for molding the elastic columns, and the abrasive grains can be distributed throughout the elastic columns. Even if the main body pig wears down and becomes smaller, new polishing layers are formed on the surface one after another.

本体ピグ4は、水道管1の内面に圧送されて擦り洗いできるように、外径を水道管1の内径よりも大きく、たとえば水道管1の内径の1.2倍以上、さらに好ましくは1.5倍以上とする。本体ピグが太すぎると、水道管1内をスムーズに圧送できなくなり、また水道管1から細い分岐管2への移動が難しくなる。したがって、本体ピグ4の外径は、たとえば水道管1の内径の3倍以下、好ましくは2倍以下とする。本体ピグ4の水道管1に対する外径は、弾性柱に柔軟な弾性変形材を使用する場合は太くし、反対に硬い弾性変形材を使用する場合は細くする。また、水道管内の汚れの程度が甚だしく、実質的な内径が細くなっている水道管には、最初に細い本体ピグを圧送して擦り洗いし、次第に太い本体ピグを圧送して綺麗に擦り洗いする。したがって、本体ピグの外径は、弾性柱の弾性と水道管の内径と水道管の汚れの程度を考慮して最適な太さに設計される。   The main body pig 4 has an outer diameter larger than the inner diameter of the water pipe 1, for example, 1.2 times or more of the inner diameter of the water pipe 1, more preferably 1. 5 times or more. If the main body pig is too thick, the inside of the water pipe 1 cannot be smoothly pumped, and the movement from the water pipe 1 to the thin branch pipe 2 becomes difficult. Therefore, the outer diameter of the main body pig 4 is, for example, not more than 3 times, preferably not more than 2 times the inner diameter of the water pipe 1. The outer diameter of the main body pig 4 with respect to the water pipe 1 is increased when a flexible elastic deformable material is used for the elastic column, and conversely when the hard elastic deformable material is used. Also, for water pipes where the degree of dirt in the water pipe is heavy and the inner diameter is thin, first wash the main body pig by pumping and scrubbing, then gradually pump the thick main body pig and scrub it cleanly To do. Therefore, the outer diameter of the main body pig is designed to an optimum thickness in consideration of the elasticity of the elastic column, the inner diameter of the water pipe, and the degree of contamination of the water pipe.

以上の洗管ピグ3は、折曲部6を、可撓性のある軟質ウレタン樹脂等の軟質プラスチックをロッド状に成形したものとしている。プラスチックでロッド状に成形している折曲部6は、一端を本体ピグ4に埋設して連結し、他端をガイドピグ5に埋設して連結している。この折曲部6は、本体ピグ4とガイドピグ5に埋設する部分に複数の枝6Aを突出するように設けている。この形状の折曲部6は、本体ピグ4とガイドピグ5に抜けないように連結できる。   In the washing pipe pig 3 described above, the bent portion 6 is formed by molding a soft plastic such as a flexible soft urethane resin into a rod shape. One end of the bent portion 6 formed of plastic in a rod shape is embedded in the body pig 4 and connected, and the other end is embedded in the guide pig 5 and connected. The bent portion 6 is provided so that a plurality of branches 6 </ b> A protrude from portions embedded in the main body pig 4 and the guide pig 5. The bent portion 6 having this shape can be connected to the main body pig 4 and the guide pig 5 so as not to come off.

ロッド状の折曲部6は、本体ピグ4とガイドピグ5とを離して連結すると共に、細長いロッド部を曲がりやすくする。この構造の洗管ピグ3は、ガイドピグ5と本体ピグ4を分岐管2から水道管1に、また水道管1から分岐管2にスムーズに移送できる。とくに、水道管1から細い分岐管2にスムーズにガイドピグ5と本体ピグ4を移送できる。それは、分岐管2にガイドピグ5があって、本体ピグ4が水道管1にある状態で、分岐管2のガイドピグ5が加圧流体に圧送されて、折曲部6を介して水道管1内の本体ピグ4を引っ張って分岐管2に移送できるからである。また、ガイドピグ5が水道管1から分岐管2に移送されるときに、細長いロッド状の折曲部6が曲がりやすく、ガイドピグ5を水道管1から分岐管2にスムーズに移送できる効果もある。さらに、ロッド状の折曲部6は、ガイドピグ5が分岐管2に、本体ピグ4が水道管1内にあるとき、本体ピグ4が加圧流体で圧送されてロッド状の折曲部6を後ろから押すことも、ガイドピグ5と本体ピグ4をスムーズに移送することに効果がある。   The rod-like bent portion 6 separates and connects the main body pig 4 and the guide pig 5 and makes the elongated rod portion easy to bend. The washing pipe pig 3 having this structure can smoothly transfer the guide pig 5 and the main body pig 4 from the branch pipe 2 to the water pipe 1 and from the water pipe 1 to the branch pipe 2. In particular, the guide pig 5 and the main body pig 4 can be smoothly transferred from the water pipe 1 to the thin branch pipe 2. That is, the guide pipe 5 is provided in the branch pipe 2 and the main body pig 4 is in the water pipe 1, and the guide pig 5 of the branch pipe 2 is pumped to the pressurized fluid and the water pipe 1 is passed through the bent portion 6. This is because the main body pig 4 can be pulled and transferred to the branch pipe 2. Further, when the guide pig 5 is transferred from the water pipe 1 to the branch pipe 2, the elongated rod-like bent portion 6 is easily bent, and there is an effect that the guide pig 5 can be smoothly transferred from the water pipe 1 to the branch pipe 2. Furthermore, when the guide pig 5 is in the branch pipe 2 and the main body pig 4 is in the water pipe 1, the rod-shaped bent section 6 is fed by the pressurized fluid so that the rod-shaped bent section 6 is Pushing from behind also has an effect of smoothly transferring the guide pig 5 and the main body pig 4.

ただし、洗管ピグは、折曲部をロッド状には特定しない。折曲部は、たとえば、図示しないが、自由に変形できる紐状とすることもできる。紐状の折曲部は、ガイドピグが分岐管にある状態で、本体ピグを水道管に位置させる長さ、たとえば本体ピグの外径よりも長くする。折曲部を紐状とする洗管ピグは、加圧流体で圧送される分岐管のガイドピグが、紐状の折曲部を介して水道管の本体ピグを引っ張って、水道管から分岐管に移送させる。紐状の折曲部は、変形しやすいので、ガイドピグが水道管から分岐管に移送するときに曲がりやすく、ガイドピグを水道管から分岐管にスムーズに移送できる。   However, the washing tube pig does not specify the bent portion in a rod shape. For example, the bent portion may be a string that can be freely deformed, although not shown. The string-like bent portion is longer than the length for positioning the main body pig on the water pipe, for example, the outer diameter of the main body pig, with the guide pig in the branch pipe. The washing pipe pig with the bent portion in the shape of a string is that the guide pig of the branch pipe that is pumped with pressurized fluid pulls the main pipe of the water pipe through the string-like bent portion, so that the water pipe is changed to the branch pipe. Transport. Since the string-like bent portion is easily deformed, it is easily bent when the guide pig is transferred from the water pipe to the branch pipe, and the guide pig can be smoothly transferred from the water pipe to the branch pipe.

さらに、洗管ピグ3は、折曲部6を、本体ピグ4とガイドピグ5に一体構造とすることもできる。図21に示す洗管ピグ3は、本体ピグ4と折曲部6とガイドピグ5の全体を合成樹脂発泡体で一体的に成形している。この構造は、安価に多量生産できる。この折曲部6は、本体ピグ4とガイドピグ5を成形する合成樹脂発泡で成形される。この洗管ピグ3は、折曲部6をガイドピグ5よりも細く成形して、曲がりやすくしている。   Further, the washing tube pig 3 can have the bent portion 6 integrally formed with the main body pig 4 and the guide pig 5. The washing tube pig 3 shown in FIG. 21 is formed by integrally molding the main body pig 4, the bent portion 6, and the guide pig 5 with a synthetic resin foam. This structure can be mass-produced at low cost. The bent portion 6 is molded by synthetic resin foam for molding the main body pig 4 and the guide pig 5. The washing pipe pig 3 is formed such that the bent portion 6 is formed thinner than the guide pig 5 so that it can be easily bent.

ガイドピグ5は、水道管1を洗浄するためのものではなく、本体ピグ4を水道管1から分岐管2に引っ張り上げるために設けている。したがって、ガイドピグ5は、分岐管2内をスムーズに圧送される外径に製作される。水道管1に連結している分岐管2の内径は、ほとんどが75mmである。ガイドピグ5は、この内径の分岐管2に加圧流体で圧送されるように、外径を80mm〜150mmとする。ガイドピグ5は、本体ピグ4と同じように、分岐管2の内面に弾性的に押圧される状態で、加圧流体に圧送される。   The guide pig 5 is not for cleaning the water pipe 1 but is provided for pulling the main body pig 4 from the water pipe 1 to the branch pipe 2. Therefore, the guide pig 5 is manufactured to an outer diameter that is smoothly pumped through the branch pipe 2. The inner diameter of the branch pipe 2 connected to the water pipe 1 is almost 75 mm. The guide pig 5 has an outer diameter of 80 mm to 150 mm so as to be pumped by the pressurized fluid to the branch pipe 2 having the inner diameter. As with the main body pig 4, the guide pig 5 is pumped to the pressurized fluid while being elastically pressed against the inner surface of the branch pipe 2.

ガイドピグ5は、本体ピグ4と同じように、弾性変形材を円柱状に加工して製作される。弾性変形材は、ウレタン樹脂やEVA等の軟質の合成樹脂発泡体である。弾性変形材は、合成樹脂発泡体に代わって、ゴム状弾性体を気密に閉塞して、内部に気体を充填する構造とすることもできる。図のガイドピグ4は円柱状としているが、ガイドピグは、必ずしも円柱状とする必要はなく、分岐管内をスムーズに圧送できる他の外形とすることもできる。ガイドピグは、図示しないが、球形状とすることもできる。球形状のガイドピグは、外径である直径を80mm〜150mmとすることができる。さらに、ガイドピグは、側面の一部にテーパー面を有する円柱状や円錐台形状とすることもできる。これらのガイドピグも、底面の外径を80mm〜150mmとして分岐管内をスムーズに圧送できる。   As with the main body pig 4, the guide pig 5 is manufactured by processing an elastically deformable material into a cylindrical shape. The elastic deformable material is a soft synthetic resin foam such as urethane resin or EVA. In place of the synthetic resin foam, the elastic deformable material may be structured such that the rubber-like elastic body is hermetically closed and gas is filled therein. The guide pig 4 shown in the figure has a cylindrical shape, but the guide pig does not necessarily have a cylindrical shape, and may have another external shape that can be smoothly pumped in the branch pipe. Although not shown, the guide pig can be formed in a spherical shape. The spherical guide pig can have an outer diameter of 80 mm to 150 mm. Further, the guide pig may be formed in a columnar shape or a truncated cone shape having a tapered surface on a part of the side surface. These guide pigs can also be smoothly pumped through the branch pipe by setting the outer diameter of the bottom surface to 80 mm to 150 mm.

以上の構造の洗管ピグ3は、本体ピグ4の先端に折曲部6を介して本体ピグ4よりも小さい外形のガイドピグ5を連結した構造としている。この構造の洗管ピグ3は、水道管1から分岐管2に移送する状態において、細い分岐管2にガイドピグ5があって、本体ピグ4が水道管1にある状態で、分岐管2のガイドピグ5を加圧流体で圧送させて、折曲部6を介して水道管1内の本体ピグ4を引っ張って分岐管2に移送できる。また、分岐管2から水道管1に移送する状態において、分岐管2に本体ピグ4があって、ガイドピグ5が水道管1に侵入する状態で、ガイドピグ5を優先して水道管1内で移送させて、折曲部6を介して本体ピグ4を引っ張って水道管1に移送できる。したがって、以上の構造の洗管ピグ3は、水道管1から細い分岐管2に、また分岐管2から水道管1にスムーズに洗管ピグ3を移送させて効率よく洗浄できる。ただ、洗管ピグは、以上の構造に特定せず、ガイドピグのない洗管ピグを使用して、洗管ピグを水道管から分岐管に、また分岐管から水道管に移送して、水道管を効率よく洗浄することもできる。   The washing tube pig 3 having the above structure has a structure in which a guide pig 5 having an outer shape smaller than that of the main body pig 4 is connected to the front end of the main body pig 4 via a bent portion 6. The washing pipe pig 3 having this structure has a guide pig 5 in the thin branch pipe 2 in a state where the washing pipe pig 3 is transferred from the water pipe 1 to the branch pipe 2 and a guide pig of the branch pipe 2 in a state where the main body pig 4 is in the water pipe 1. The main body pig 4 in the water pipe 1 can be pulled through the bent portion 6 and transferred to the branch pipe 2 by feeding the pressure 5 with a pressurized fluid. Further, in the state of transferring from the branch pipe 2 to the water pipe 1, the main body pig 4 is present in the branch pipe 2, and the guide pig 5 is invaded into the water pipe 1, and the guide pig 5 is preferentially transferred in the water pipe 1. The main body pig 4 can be pulled through the bent portion 6 and transferred to the water pipe 1. Therefore, the washing pipe pig 3 having the above structure can be efficiently washed by smoothly transferring the washing pipe pig 3 from the water pipe 1 to the thin branch pipe 2 and from the branch pipe 2 to the water pipe 1. However, the washing pipe pig is not specified in the above structure, and the washing pipe pig without the guide pig is used to transfer the washing pipe pig from the water pipe to the branch pipe and from the branch pipe to the water pipe. Can be efficiently cleaned.

本発明の洗浄方法は、以下のようにして地中に埋設している水道管1を洗浄する。
(1)図1に示すように、洗管ピグ3で洗浄する領域の両側、すなわち送り込み側の分岐管2の外側と、取り出し側の分岐管2の外側に連結している仕切弁8を閉弁する。
(2)分岐管2の上端に連結された補修弁28と消火栓等を連結しているフランジの止ネジを外して、送り込み側と取り出し側の消火栓等を外して、分岐管2に連結された補修弁28の上端を開口する。
(3)図2と図3に示すように、送り込み側の分岐管2に連結された補修弁28の開口端に、両フランジ短管10を介して三フランジY字管11を連結する。さらに、図4と図5に示すように、取り出し側の分岐管2に連結された補修弁28の開口端に、両フランジ短管10を介して三フランジY字管11を連結する。
The cleaning method of the present invention cleans the water pipe 1 embedded in the ground as follows.
(1) As shown in FIG. 1, the gate valves 8 connected to both sides of the area to be cleaned with the washing pipe pig 3, that is, the outside of the branch pipe 2 on the feeding side and the outside of the branch pipe 2 on the take-out side are closed. I speak.
(2) Remove the set screw of the flange connecting the repair valve 28 connected to the upper end of the branch pipe 2 and the fire hydrant, etc., remove the fire hydrant etc. on the feeding side and the take-out side, and connected to the branch pipe 2 The upper end of the repair valve 28 is opened.
(3) As shown in FIGS. 2 and 3, the three-flange Y-shaped pipe 11 is connected to the opening end of the repair valve 28 connected to the branch pipe 2 on the feeding side through the short flanges 10. Further, as shown in FIGS. 4 and 5, the three-flange Y-shaped pipe 11 is connected to the open end of the repair valve 28 connected to the branch pipe 2 on the take-out side via the short flanges 10.

両フランジ短管10は、テーパー管10aの両端にフランジ10bを設けている。テーパー管10aは、分岐管2に向かって内径を次第に細くして、三フランジY字管11から挿入される洗管ピグ3を分岐管2に無理なく案内する。したがって、このテーパー管10aは、下端の内径を分岐管2と同じとし、上端の内径を、三フランジY字管11の下端と同じ内径としている。たとえば、図2ないし図5の三フランジY字管11は、下端の内径を100mmとするので、テーパー管10aは、上端の内径を100mm、下端の内径を75mmとしている。三フランジY字管11は、下端の内径を100mm、上端と分岐端の内径を125mmとしている。   Both flange short pipes 10 are provided with flanges 10b at both ends of the tapered pipe 10a. The tapered tube 10a gradually narrows the inner diameter toward the branch tube 2, and guides the washing tube pig 3 inserted from the three flange Y-shaped tube 11 to the branch tube 2 without difficulty. Therefore, the tapered tube 10 a has the same inner diameter at the lower end as that of the branch pipe 2 and the same inner diameter as the lower end of the three-flange Y-shaped tube 11. For example, the three-flange Y-shaped tube 11 of FIGS. 2 to 5 has an inner diameter of 100 mm at the lower end, and the tapered tube 10a has an inner diameter of the upper end of 100 mm and an inner diameter of the lower end of 75 mm. The three-flange Y-shaped pipe 11 has an inner diameter of 100 mm at the lower end and an inner diameter of 125 mm at the upper end and the branch end.

図3に示す送り込み側の三フランジY字管11は、直管11Aの上端に開閉弁12を介して、加圧流体源24に連結するカップリング13を連結している。分岐管11Bの開口端にも開閉弁14を介して加圧流体源25に連結するカップリング15を連結している。三フランジY字管11には圧力計16を連結して、加圧流体の圧力を検出するようにしている。   The three-flange Y-shaped pipe 11 on the feeding side shown in FIG. 3 has a coupling 13 connected to a pressurized fluid source 24 connected to the upper end of the straight pipe 11A via the on-off valve 12. A coupling 15 connected to a pressurized fluid source 25 is connected to the open end of the branch pipe 11B via the on-off valve 14. A pressure gauge 16 is connected to the three flange Y-shaped tube 11 so as to detect the pressure of the pressurized fluid.

図5に示す取り出し側の三フランジY字管11は、直管11Aの上端に開閉弁17を介してチーズ18を連結し、チーズ18の開口端に開閉弁19、20を介して、加圧流体源26に連結するカップリング21と、真空装置27に連結するカップリング22とを連結している。分岐管11Bの開口端には仕切弁23を連結している。この三フランジY字管11も圧力計16を連結して、加圧流体の圧力を検出するようにしている。   The three-flange Y-shaped tube 11 on the take-out side shown in FIG. 5 connects the cheese 18 via the open / close valve 17 to the upper end of the straight pipe 11A, and pressurizes the open end of the cheese 18 via the open / close valves 19 and 20. A coupling 21 connected to the fluid source 26 and a coupling 22 connected to the vacuum device 27 are connected. A gate valve 23 is connected to the open end of the branch pipe 11B. The three flange Y-shaped tube 11 is also connected to a pressure gauge 16 to detect the pressure of the pressurized fluid.

図12ないし図14に示すように、上端部の外周に沿って鍔部42を設けたガイドベラ40は、分岐管2に補修弁28と両フランジ短管10を連結する工程で、分岐管2に挿入されて、定位置に固定される。このガイドベラ40は、分岐管2の上端に連結された補修弁28の開口端から挿入される。このとき、送り込み側の分岐管2の挿入するガイドベラ40は、湾曲ガイド部41の先端が取り出し側の分岐管2の方向を向く姿勢で挿入する。また、取り出し側の分岐管2の挿入するガイドベラ40は、湾曲ガイド部41の先端が送り込み側の分岐管2の方向を向く姿勢で挿入する。補修弁28の開口端から挿入されたガイドベラ40は、図16と図17に示すように、補修弁28の上端のフランジ28bと、両フランジ短管10の下端のフランジ10bとで鍔部42を挟着する状態で定位置に固定される。このように、外周面から突出する鍔部42が挟着されて固定されるガイドベラ40は、水圧で洗管ピグ3を移送させる状態において、ガイドベラ40の位置が移動することなく、洗管ピグ3をスムーズに移送させて能率良く洗浄できる。鍔部のないガイドベラは、以下に示すようにして使用される。   As shown in FIGS. 12 to 14, the guide spatula 40 provided with the flange 42 along the outer periphery of the upper end portion is connected to the branch pipe 2 in the step of connecting the repair valve 28 and both flange short pipes 10 to the branch pipe 2. Inserted and fixed in place. The guide spatula 40 is inserted from the open end of the repair valve 28 connected to the upper end of the branch pipe 2. At this time, the guide spatula 40 into which the feed-side branch pipe 2 is inserted is inserted in a posture in which the tip of the curved guide portion 41 faces the direction of the take-out branch pipe 2. Further, the guide spatula 40 into which the branch pipe 2 on the take-out side is inserted is inserted in such a posture that the distal end of the curved guide portion 41 faces the direction of the branch pipe 2 on the feed side. As shown in FIGS. 16 and 17, the guide spatula 40 inserted from the opening end of the repair valve 28 has a flange 42 b between the upper flange 28 b of the repair valve 28 and the lower flange 10 b of both flange short pipes 10. It is fixed at a fixed position while being sandwiched. In this way, the guide spatula 40 to which the collar portion 42 protruding from the outer peripheral surface is sandwiched and fixed is not moved and the position of the guide spatula 40 is not moved in the state in which the wash pipe pig 3 is transferred by water pressure. Can be transferred smoothly and washed efficiently. A guide spatula without a buttock is used as follows.

(4)図2と図4に示すように、送り込み側の三フランジY字管11の直管11Aを開口して、水道管1に向かってガイドベラ40を挿入する。ガイドベラ40は、湾曲ガイド部41の先端が取り出し側の分岐管2の方向を向く姿勢で挿入する。このとき、湾曲ガイド部41の先端部を直線状に弾性変形させて挿入する。また、図9ないし図11に示すガイドベラ40は、図10の矢印で示すように、櫛片47の切り込み幅を狭くするように湾曲ガイド部41を変形させて全体の横幅を狭くして、湾曲ガイド部41を分岐管2から水道管1に挿入する。ガイドベラ40は、湾曲ガイド部41の先端が水道管1の底面に接触する位置まで挿入する。この状態でガイドベラ40の湾曲ガイド部41は、分岐管2の内面の垂直面から、水道管1の底面の水平面に沿って湾曲する形状に復元する。また、複数の櫛片47に分割された湾曲ガイド部41は、図10と図11に示すように、太い水道管1に挿入されると、櫛片47が弾性復元力で水道管1の内部で拡開される。 (4) As shown in FIGS. 2 and 4, the straight pipe 11 </ b> A of the three-flange Y-shaped pipe 11 on the feeding side is opened, and the guide spatula 40 is inserted toward the water pipe 1. The guide spatula 40 is inserted in such a posture that the tip of the curved guide portion 41 faces the direction of the branch pipe 2 on the take-out side. At this time, the distal end portion of the curved guide portion 41 is inserted while being elastically deformed linearly. Further, as shown by the arrow in FIG. 10, the guide spatula 40 shown in FIGS. 9 to 11 is deformed so that the cutting width of the comb piece 47 is narrowed and the bending guide portion 41 is deformed to reduce the overall lateral width, thereby bending the guide spatula 40. The guide part 41 is inserted into the water pipe 1 from the branch pipe 2. The guide spatula 40 is inserted to a position where the tip of the curved guide portion 41 contacts the bottom surface of the water pipe 1. In this state, the curved guide portion 41 of the guide spatula 40 is restored from the vertical surface of the inner surface of the branch pipe 2 to a shape that curves along the horizontal plane of the bottom surface of the water pipe 1. In addition, as shown in FIGS. 10 and 11, when the curved guide portion 41 divided into a plurality of comb pieces 47 is inserted into the thick water pipe 1, the comb pieces 47 are elastically restored to the inside of the water pipe 1. Will be expanded.

(5)図2に示すように、送り込み側の三フランジY字管11の直管11Aから水道管1に向かって、先端に回転洗浄具50を連結している可撓性線材51を回転することなく挿入する。挿入される回転洗浄具50は、ガイドベラ40の湾曲ガイド部41に沿って、分岐管2から水道管1に挿入される。可撓性線材51は、回転洗浄具50を水道管1に入れるまで挿入する。この状態で可撓性線材51の後端に連結するモータ等の回転動力源52を駆動して、可撓性線材51を回転し、可撓性線材51で回転洗浄具50を回転して、水道管1の内面を擦り洗いする。回転する回転洗浄具50は、水道管1の内面を擦って内面に付着するサビ瘤や異物を強制的に除去する。このとき、水道管1に水を流して、回転洗浄具50で除去された異物を水道管1から排出する。また、可撓性線材51を回転させながら、さらに押し込んで、水道管1の内面を分岐管2との連結部9から奥まで擦り洗いできる。水道管1の内面を擦り洗いした後、先端に回転洗浄具50を連結している可撓性線材51を分岐管2に連結している三フランジY字管11の直管11Aから引き出す。 (5) As shown in FIG. 2, the flexible wire 51 connecting the rotary cleaning tool 50 at the tip is rotated from the straight pipe 11 </ b> A of the three-flange Y-shaped pipe 11 on the feeding side toward the water pipe 1. Insert without. The rotating cleaning tool 50 to be inserted is inserted from the branch pipe 2 into the water pipe 1 along the curved guide portion 41 of the guide spatula 40. The flexible wire 51 is inserted until the rotary cleaning tool 50 is inserted into the water pipe 1. In this state, a rotational power source 52 such as a motor connected to the rear end of the flexible wire 51 is driven, the flexible wire 51 is rotated, and the rotary cleaning tool 50 is rotated by the flexible wire 51, Scrub the inner surface of the water pipe 1. The rotating rotary cleaning tool 50 rubs the inner surface of the water pipe 1 to forcibly remove rust and foreign matter adhering to the inner surface. At this time, water is allowed to flow through the water pipe 1, and the foreign matter removed by the rotary cleaning tool 50 is discharged from the water pipe 1. Further, while rotating the flexible wire 51, the inner surface of the water pipe 1 can be rubbed from the connecting portion 9 with the branch pipe 2 to the back by further pushing. After scrubbing the inner surface of the water pipe 1, the flexible wire 51 connecting the rotary cleaning tool 50 to the tip is pulled out from the straight pipe 11 </ b> A of the three flange Y-shaped pipe 11 connected to the branch pipe 2.

(6)送り込み側の分岐管2の所定の位置にガイドベラ40をセットした状態で、送り込み側の三フランジY字管11の直管11Aから洗管ピグ3を入れた後、直管11Aの開口端を閉塞する。
図16に示すように、鍔部42を補修弁28と両フランジ短管10との間に固定して、ガイドベラ40を送り込み側の分岐管2の所定の位置にセットしている送り込み側の三フランジY字管11は、分岐管11Bから洗管ピグ3を入れ、洗管ピグ3を押して直管11Aまで押し込んだ後、分岐管11Bを閉塞することもできる。図16の三フランジY字管11は、分岐管11Bに開閉弁14を介してカップリング15を連結しているので、このカップリング15を介して分岐管11Bを加圧空気源25のコンプレッサに連結し、コンプレッサ25から加圧空気を供給して、洗管ピグ3を直管11Aまで押し込むことができる。
(6) In the state where the guide spatula 40 is set at a predetermined position of the branch pipe 2 on the feeding side, the washing pipe pig 3 is inserted from the straight pipe 11A of the three-flange Y-shaped pipe 11 on the feeding side, and then the opening of the straight pipe 11A Close the end.
As shown in FIG. 16, the flange 42 is fixed between the repair valve 28 and both flange short pipes 10, and the guide spatula 40 is set at a predetermined position of the branch pipe 2 on the feed side. The flange Y-shaped pipe 11 can also close the branch pipe 11B after inserting the wash pipe pig 3 from the branch pipe 11B and pushing the wash pipe pig 3 into the straight pipe 11A. 16 has a coupling 15 coupled to the branch pipe 11B via an on-off valve 14, and therefore the branch pipe 11B is used as a compressor for the pressurized air source 25 via the coupling 15. Connected, pressurized air is supplied from the compressor 25, and the washing pipe pig 3 can be pushed into the straight pipe 11A.

(7)その後、送り込み側の三フランジY字管11の上端に設けているカップリング13を介して加圧流体源24に連結し、加圧流体源24から加圧流体を供給する。加圧流体源24はコンプレッサである。コンプレッサである加圧流体源24は、加圧流体として加圧空気を供給する。供給された加圧空気は、図3に示すように、洗管ピグ3を、三フランジY字管11と両フランジ短管10と分岐管2に通過させ、さらに分岐管2から水道管1に圧送する。水道管1は分岐管2よりも太いので、洗管ピグ3は分岐管2から水道管1に無理なく圧送される。このとき、分岐端のカップリング15を加圧流体源25であるコンプレッサに連結して、ここから三フランジY字管11に加圧空気を供給することもできる。 (7) Thereafter, the fluid is connected to the pressurized fluid source 24 via the coupling 13 provided at the upper end of the three-flange Y-shaped pipe 11 on the feeding side, and the pressurized fluid is supplied from the pressurized fluid source 24. The pressurized fluid source 24 is a compressor. A pressurized fluid source 24, which is a compressor, supplies pressurized air as a pressurized fluid. As shown in FIG. 3, the supplied pressurized air causes the washing pipe pig 3 to pass through the three-flange Y-shaped pipe 11, the both flanged short pipe 10 and the branch pipe 2, and further from the branch pipe 2 to the water pipe 1. Pump. Since the water pipe 1 is thicker than the branch pipe 2, the washing pipe pig 3 is pumped from the branch pipe 2 to the water pipe 1 without difficulty. At this time, the coupling 15 at the branch end can be connected to a compressor as the pressurized fluid source 25, and pressurized air can be supplied to the three-flange Y-tube 11 from here.

(8)送り込み側の三フランジY字管11から供給される加圧流体は、洗管ピグ3を送り込み側の分岐管2から水道管1へ移送させる。このとき、洗管ピグ3は、送り込み側の分岐管2に挿入されたガイドベラ40の湾曲ガイド部41に沿って、分岐管2から水道管1へスムーズに移送される。さらに、送り込み側の三フランジY字管11から加圧流体を供給して、洗管ピグ3を送り込み側から取り出し側に圧送する。 (8) The pressurized fluid supplied from the three-flange Y-shaped pipe 11 on the feeding side transfers the washing pipe pig 3 from the branch pipe 2 on the feeding side to the water pipe 1. At this time, the washing pipe pig 3 is smoothly transferred from the branch pipe 2 to the water pipe 1 along the curved guide portion 41 of the guide spatula 40 inserted into the branch pipe 2 on the feeding side. Further, pressurized fluid is supplied from the three-flange Y-shaped tube 11 on the feeding side, and the washing tube pig 3 is pressure-fed from the feeding side to the removal side.

(9)洗管ピグ3が取り出し側に圧送されると、送り込み側からの加圧空気の供給を停止する。その後、洗管ピグ3を取り出し側から送り込み側に逆方向に圧送して水道管1の内面をさらに擦り洗いする。このとき、取り出し側の三フランジY字管11に連結しているカップリング19を加圧流体源26のコンプレッサに連結し、送り込み側の三フランジY字管11に連結している開閉弁14を開いて空気を排気できる状態とする。取り出し側から供給される加圧流体は、洗管ピグ3を取り出し側から送り込み側に逆方向に圧送する。この状態で、取り出し側から送り込み側に逆移送された洗管ピグ3は、その後、再び、送り込み側から取り出し側に圧送される。洗管ピグ3を、送り込み側と取り出し側に繰り返し往復させて、水道管1の内面はより綺麗に擦り洗いされる。水道管1の内面を往復するように圧送される洗管ピグ3は、本体ピグ4の表面に設けている研磨層7で水道管1の内面を擦り洗いする。 (9) When the washing tube pig 3 is pumped to the take-out side, the supply of pressurized air from the feed-in side is stopped. Thereafter, the washing pipe pig 3 is pressure-fed in the reverse direction from the take-out side to the feed-in side to further scrub the inner surface of the water pipe 1. At this time, the coupling 19 connected to the three-flange Y-shaped pipe 11 on the take-out side is connected to the compressor of the pressurized fluid source 26, and the on-off valve 14 connected to the three-flange Y-shaped pipe 11 on the feeding side is provided. Open and air can be exhausted. The pressurized fluid supplied from the take-out side pumps the washing tube pig 3 from the take-out side to the feed side in the reverse direction. In this state, the washing tube pig 3 that has been reversely transferred from the take-out side to the feed-in side is then pumped again from the feed-in side to the take-out side. The washing pipe pig 3 is repeatedly reciprocated between the feeding side and the taking-out side, so that the inner surface of the water pipe 1 is scrubbed cleanly. The washing tube pig 3 that is pressure-fed so as to reciprocate the inner surface of the water pipe 1 rubs the inner surface of the water pipe 1 with the polishing layer 7 provided on the surface of the main body pig 4.

(10)水道管1の内面を往復して綺麗に擦り洗いした洗管ピグ3は、取り出し側の三フランジY字管11から外部に取り出される。このとき、取り出し側の三フランジY字管11の直管11Aを開口して、水道管1に向かってガイドベラ40を挿入する。ガイドベラ40は、湾曲ガイド部41の先端が送り込み側の分岐管2の方向を向く姿勢で挿入する。このとき、湾曲ガイド部41の先端部を直線状に弾性変形させて挿入する。また、図9ないし図11に示すガイドベラ40は、図10の矢印で示すように、櫛片47の切り込み幅を狭くするように湾曲ガイド部41を変形させて全体の横幅を狭くして、湾曲ガイド部41を分岐管2から水道管1に挿入する。ガイドベラ40は、湾曲ガイド部41の先端が水道管1の底面に接触する位置まで挿入する。この状態でガイドベラ40の湾曲ガイド部41は、分岐管2の内面の垂直面から、水道管1の底面の水平面に沿って湾曲する形状に復元する。また、複数の櫛片47に分割された湾曲ガイド部41は、図10と図11に示すように、太い水道管1に挿入されると、櫛片47が弾性復元力で水道管1の内部で拡開される。 (10) The wash pipe pig 3 that has been cleaned and scrubbed cleanly by reciprocating the inner surface of the water pipe 1 is taken out from the three-flange Y-shaped pipe 11 on the take-out side. At this time, the straight pipe 11 </ b> A of the three-flange Y-shaped pipe 11 on the take-out side is opened, and the guide spatula 40 is inserted toward the water pipe 1. The guide spatula 40 is inserted in a posture in which the distal end of the curved guide portion 41 faces the direction of the branch pipe 2 on the feeding side. At this time, the distal end portion of the curved guide portion 41 is inserted while being elastically deformed linearly. Further, as shown by the arrow in FIG. 10, the guide spatula 40 shown in FIGS. 9 to 11 is deformed so that the cutting width of the comb piece 47 is narrowed and the bending guide portion 41 is deformed to reduce the overall lateral width, thereby bending the guide spatula 40. The guide part 41 is inserted into the water pipe 1 from the branch pipe 2. The guide spatula 40 is inserted to a position where the tip of the curved guide portion 41 contacts the bottom surface of the water pipe 1. In this state, the curved guide portion 41 of the guide spatula 40 is restored from the vertical surface of the inner surface of the branch pipe 2 to a shape that curves along the horizontal plane of the bottom surface of the water pipe 1. In addition, as shown in FIGS. 10 and 11, when the curved guide portion 41 divided into a plurality of comb pieces 47 is inserted into the thick water pipe 1, the comb pieces 47 are elastically restored to the inside of the water pipe 1. Will be expanded.

(11)取り出し側の分岐管2にガイドベラ40を挿入した後、先端に回転洗浄具50を連結している可撓性線材51を挿入して水道管1の内面を擦り洗いする。その後、先端に回転洗浄具50を連結している可撓性線材51を引き抜く。可撓性線材51を引き抜くが、ガイドベラ40は引き抜くことなく、そのままの位置に配置する。
ただ、取り出し側の分岐管2に挿入するガイドベラ40と、先端に回転洗浄具50を連結している可撓性線材51は、送り出し側の分岐管2に洗管ピグ3を挿入する前に挿入することも、送り出し側の分岐管2に洗管ピグ3を挿入した後、洗管ピグ3を移送して水道管1を洗浄する前に挿入することもできる。
(11) After the guide spatula 40 is inserted into the branch pipe 2 on the take-out side, the flexible wire 51 connecting the rotary cleaning tool 50 is inserted at the tip to scrub the inner surface of the water pipe 1. Thereafter, the flexible wire 51 connecting the rotary cleaning tool 50 to the tip is pulled out. The flexible wire 51 is pulled out, but the guide spatula 40 is not pulled out and is arranged in the same position.
However, the guide spatula 40 to be inserted into the branch pipe 2 on the take-out side and the flexible wire 51 connecting the rotary cleaning tool 50 to the tip are inserted before the washing pipe pig 3 is inserted into the branch pipe 2 on the delivery side. Alternatively, after the washing pipe pig 3 is inserted into the branch pipe 2 on the delivery side, the washing pipe pig 3 can be transferred and inserted before the water pipe 1 is washed.

(12)取り出し側の分岐管2の所定の位置にガイドベラ40をセットした状態で、送り込み側から加圧流体を供給して、洗管ピグ3を水道管1から分岐管2に移送する。このとき、洗管ピグ3は、取り出し側の分岐管2に挿入されたガイドベラ40の湾曲ガイド部41に沿って、水道管1から分岐管2へスムーズに移送される。このとき、取り出し側の三フランジY字管11に連結している真空装置27で空気を強制的に排出して、洗管ピグ3を水道管1から分岐管2にスムーズに移送することができる。
図3と図5に示す洗管ピグ3は、本体ピグ4の先端に連結しているガイドピグ5が本体ピグ4よりも細く、また折曲部6を介して本体ピグ4に連結しているので、このガイドピグ5に先導されて水道管1から分岐管2にスムーズに移送される。分岐管2に移送されるガイドピグ5は、送り込み側から供給される加圧空気に圧送されて、分岐管2を上昇する。このときも、取り出し側の三フランジY字管11に連結している真空装置27で空気を強制的に排気して、ガイドピグ5をスムーズに分岐管2に上昇できる。分岐管2を上昇するガイドピグ5は、折曲部6を介して本体ピグ4を引っ張って、水道管1から分岐管2に移送する。
(12) With the guide spatula 40 set at a predetermined position of the branch pipe 2 on the take-out side, pressurized fluid is supplied from the feed side, and the washing pipe pig 3 is transferred from the water pipe 1 to the branch pipe 2. At this time, the washing pipe pig 3 is smoothly transferred from the water pipe 1 to the branch pipe 2 along the curved guide portion 41 of the guide spatula 40 inserted into the branch pipe 2 on the take-out side. At this time, air can be forcibly discharged by the vacuum device 27 connected to the three-flange Y-shaped pipe 11 on the take-out side, and the washing pipe pig 3 can be smoothly transferred from the water pipe 1 to the branch pipe 2. .
In the washing tube pig 3 shown in FIGS. 3 and 5, the guide pig 5 connected to the tip of the main body pig 4 is thinner than the main body pig 4 and is connected to the main body pig 4 via the bent portion 6. The guide pig 5 guides the water smoothly from the water pipe 1 to the branch pipe 2. The guide pig 5 transferred to the branch pipe 2 is pumped to the pressurized air supplied from the feed side and moves up the branch pipe 2. Also at this time, air can be forcibly exhausted by the vacuum device 27 connected to the three-flange Y-shaped pipe 11 on the take-out side, and the guide pig 5 can be smoothly raised to the branch pipe 2. The guide pig 5 ascending the branch pipe 2 pulls the main body pig 4 through the bent portion 6 and transfers it from the water pipe 1 to the branch pipe 2.

(13)分岐管2に移送された洗管ピグ3は、加圧空気で分岐管2を上昇する方向に圧送され、取り出し側の分岐管2から外部に排出される。
さらに、このとき、取り出し側の分岐管2に挿入されたガイドベラ40を分岐管2から引き出しながら、洗管ピグ3を外部に排出することもできる。とくに、ガイドベラ40は、先端部に湾曲ガイド部41を設けているので、この湾曲ガイド部41で洗管ピグ3の後端を引き上げながら、洗管ピグ3をスムーズに外部に排出できる。
(13) The washing pipe pig 3 transferred to the branch pipe 2 is pumped in the direction of ascending the branch pipe 2 with pressurized air, and is discharged to the outside from the branch pipe 2 on the take-out side.
Further, at this time, the washing tube pig 3 can be discharged to the outside while the guide spatula 40 inserted in the branch tube 2 on the take-out side is pulled out from the branch tube 2. In particular, since the guide spatula 40 is provided with the curved guide portion 41 at the tip portion, the washing tube pig 3 can be smoothly discharged to the outside while the curved guide portion 41 pulls up the rear end of the washing tube pig 3.

以上のように加圧流体に加圧空気を使用すると、洗管ピグ3を速やかに分岐管2と水道管1に圧送できる。ただし、加圧流体には加圧液体、すなわち水を加圧して供給することもできる。この場合、加圧流体源は、水を加圧して排出できるタービンポンプ等の水ポンプである。   As described above, when pressurized air is used as the pressurized fluid, the washing pipe pig 3 can be quickly pumped to the branch pipe 2 and the water pipe 1. However, a pressurized liquid, that is, water can be pressurized and supplied as the pressurized fluid. In this case, the pressurized fluid source is a water pump such as a turbine pump that can pressurize and discharge water.

以上の実施例は、消火栓と空気管と泥吐き部のいずれかからなる分岐管2を使用して、洗管ピグ3を水道管1に入れ、また排出するので、水道管1に洗管ピグ3を出し入れする分岐管2を連結する必要がない。ただ、本発明の洗浄方法は、水道管に、これよりも細い分岐管を連結して、先端に回転洗浄具を連結している可撓性線材を、分岐管から水道管に挿通して、水道管内に挿入される回転洗浄具を回転して水道管の内面の異物を除去し、その後、洗管ピグを分岐管から水道管に出し入れすることもできる。この場合、水道管よりも細い分岐管を利用して、この分岐管から洗管ピグを水道管に出し入れできる。したがって、水道管に分岐管を連結するとしても、細い分岐管を連結するので、分岐管の連結を簡単に経済的にできる。   The above embodiment uses the branch pipe 2 composed of any one of a fire hydrant, an air pipe, and a mud spout, and puts the washing pipe pig 3 into the water pipe 1 and discharges it. There is no need to connect the branch pipe 2 for taking in and out 3. However, in the cleaning method of the present invention, the branch pipe thinner than this is connected to the water pipe, and the flexible wire connecting the rotary cleaning tool at the tip is inserted from the branch pipe into the water pipe, The rotary cleaning tool inserted into the water pipe can be rotated to remove foreign matter on the inner surface of the water pipe, and then the washing pipe pig can be taken in and out of the branch pipe. In this case, a wash pipe pig can be taken in and out of the water pipe using a branch pipe thinner than the water pipe. Therefore, even if the branch pipe is connected to the water pipe, since the thin branch pipe is connected, the connection of the branch pipe can be made easily and economically.

ところで、水道管の洗浄は、通常、水道管を断水して行われる。洗浄によって発生する汚濁水を、一般家庭等の水道に流入させないためである。通常の水道管の洗浄においては、水道管を所定の区間で断水して洗浄し、洗浄時に発生する汚濁水を水道管から排水した後、断水を解除することにより、水道管の洗浄による汚濁水を一般家庭等の水道に流入させないようにしている。ただ、水道管を断水することは、一般家庭等において極めて不便であり、長時間の断水は好ましくない。このため、水道管の洗浄のために確保される断水時間には制限を受ける。したがって、水道管の洗浄は、限られた断水時間内に行う必要があり、限られた断水時間内で、いかに水道管の全体を綺麗に洗浄できるかが極めて大切である。ここで、回転洗浄具による洗浄は、洗管ピグによる水道管の洗浄の前工程として水道管を洗浄するものであり、水道管や分岐管の内面の異物を除去する方法として極めて有効である。ただ、この回転洗浄具による洗浄を断水時間内に行うと、洗管ピグによる水道管の洗浄にかける時間が短縮される。洗管ピグによる水道管の洗浄は、最も大切な主となる洗浄工程であるため、前工程である回転洗浄具による洗浄に、限られた断水時間を費やすことは有効ではない。したがって、水道管を断水することなく、回転洗浄具による洗浄を実行できると、洗管ピグで洗浄する作業に必要な洗浄時間を確保して、限られた断水時間を有効に利用できる。
以下に、水道管を断水することなく、回転洗浄具で洗浄する方法を詳述する。
By the way, the water pipe is usually washed by shutting off the water pipe. This is to prevent the polluted water generated by the cleaning from flowing into the water supply of ordinary households. In normal water pipe cleaning, the water pipe is washed by water in a predetermined section, and the polluted water generated by washing the water pipe is released by draining the polluted water generated during washing from the water pipe and then releasing the water drain. Is not allowed to flow into the water supply of ordinary households. However, it is extremely inconvenient for ordinary households to cut off water pipes, and it is not preferable to cut water for a long time. For this reason, there is a limit to the water shut-off time secured for cleaning the water pipe. Therefore, it is necessary to clean the water pipe within a limited water shut-off time, and it is extremely important how the entire water pipe can be cleaned cleanly within the limited water shut-off time. Here, the cleaning with the rotary cleaning tool is for cleaning the water pipe as a pre-process of cleaning the water pipe with the washing pipe pig, and is extremely effective as a method for removing foreign matters on the inner surface of the water pipe and the branch pipe. However, if the cleaning with the rotary cleaning tool is performed within the water shut-off time, the time required for cleaning the water pipe with the cleaning pipe pig is shortened. Washing water pipes with washing pipe pigs is the most important main washing process, and therefore it is not effective to spend a limited amount of time for washing with a rotary cleaning tool, which is a previous process. Therefore, if the cleaning with the rotary cleaning tool can be performed without shutting off the water pipe, the cleaning time required for the operation of cleaning with the washing pipe pig can be secured, and the limited water shut-off time can be used effectively.
Below, the method of wash | cleaning with a rotary washing tool, without shutting off a water pipe is explained in full detail.

図22ないし図25は、断水することなく、回転洗浄具50で水道管を洗浄する工程を示している。
消火栓と空気管と泥吐き部のいずれかからなる分岐管は、開閉できる補修弁を連結している。消火栓に使用される分岐管は、補修弁を開いて排水される。また、空気管を連結している分岐管は、補修弁を開いて空気を排出する。また、泥吐き部に使用される分岐管は、補修弁を開いて泥吐きに使用される。
22 to 25 show a process of cleaning the water pipe with the rotary cleaning tool 50 without water cutoff.
The branch pipe which consists of any one of a fire hydrant, an air pipe, and a mud spout connects the repair valve which can be opened and closed. The branch pipe used for the fire hydrant is drained by opening the repair valve. Further, the branch pipe connecting the air pipe opens the repair valve and discharges air. Moreover, the branch pipe used for a mud discharge part opens a repair valve, and is used for mud discharge.

これ等の図に示す水道管の洗浄方法は、断水することなく回転洗浄具50で水道管1を洗浄する。これ等の図は、補修弁28に空気弁58を連結している分岐管2から回転洗浄具50を水道管1に挿入して、水道管1を洗浄する方法を示すが、消火栓や泥吐き部に使用される分岐管も同じように補修弁を開閉して、水道管を洗浄できる。   In the water pipe cleaning method shown in these drawings, the water pipe 1 is cleaned with the rotary cleaning tool 50 without water interruption. These drawings show a method of cleaning the water pipe 1 by inserting the rotary cleaning tool 50 into the water pipe 1 from the branch pipe 2 connecting the air valve 58 to the repair valve 28. In the same way, the branch pipe used in the section can also open and close the repair valve to clean the water pipe.

(1)準備工程(図22及び図23)
図22の分岐管2は、補修弁28に空気弁58を連結している。図23に示すように、補修弁28を閉じて空気弁58を外し、補修弁28を閉じる状態に保持して、両フランジ短管10を連結する。両フランジ短管10は、第1フランジ10Aを補修弁28に固定して、分岐管2に連結される。両フランジ短管10は、好ましくは図に示すように、直接に補修弁28に連結される。ただし、図示しないが、両フランジ短管は、別の配管を介して分岐管に連結することもできる。両フランジ短管10は、第1フランジ10Aを補修弁28のフランジ28bにボルトとナットを介して固定されて、分岐管2に直線状に連結される。さらに、両フランジ短管10の他方のフランジ10bである第2フランジ10Bに止水フランジ蓋56が固定される。この止水フランジ蓋56に、回転洗浄具50に連結している可撓性線材51を回転できるが水漏れしないように貫通させて、両フランジ短管10の内部に回転洗浄具50を配置する。止水フランジ蓋56には、可撓性線材51を水漏れしないように貫通させるが、完全に水漏れしないように貫通させる必要はない。それは、この部分からの水漏れは、水道管1を洗浄するときに発生する汚濁水を排水できるからである。したがって、本明細書において、「止水フランジ蓋に可撓性線材を水漏れしないように貫通させる」とは、水漏れによって作業ができない状態を除く意味に使用する。
(1) Preparation process (FIGS. 22 and 23)
In the branch pipe 2 of FIG. 22, an air valve 58 is connected to the repair valve 28. As shown in FIG. 23, the repair valve 28 is closed, the air valve 58 is removed, and the repair valve 28 is held in a closed state, and both the short flange pipes 10 are connected. Both flange short pipes 10 are connected to the branch pipe 2 by fixing the first flange 10 </ b> A to the repair valve 28. Both flange short tubes 10 are preferably connected directly to the repair valve 28, as shown. However, although not shown, both flange short pipes can be connected to the branch pipe via another pipe. Both flange short pipes 10 are fixed to the branch pipe 2 in a straight line by fixing the first flange 10A to the flange 28b of the repair valve 28 via bolts and nuts. Furthermore, the water stop flange cover 56 is fixed to the second flange 10B, which is the other flange 10b of the both flange short pipes 10. A flexible wire 51 connected to the rotary cleaning tool 50 can be rotated through the water stop flange cover 56 so as not to leak water, and the rotary cleaning tool 50 is disposed inside both the flanged short pipes 10. . Although the flexible wire 51 is penetrated to the water stop flange lid 56 so as not to leak water, it is not necessary to penetrate so as not to leak completely. This is because the water leakage from this portion can drain the polluted water generated when the water pipe 1 is washed. Therefore, in this specification, “penetrate the flexible wire through the water-stop flange cover so as not to leak” is used to mean a state in which work cannot be performed due to water leak.

(2)洗浄工程
図24と図25に示すように、補修弁28を開いて回転洗浄具50を両フランジ短管10から分岐管2を通過して水道管1に挿入し、回転洗浄具50を回転させて水道管1を洗浄する。回転洗浄具50を回転させながら前進して、水道管1の内面を所定の位置まで洗浄する。洗浄工程は、分岐管2を通過するときにも回転洗浄具50を回転させて、分岐管2の内面も洗浄できる。洗浄工程において、両フランジ短管10に連結している排水弁57を開いて、排水弁57で排水しながら回転洗浄具50で分岐管2と水道管1を洗浄する。排水弁57から排水することで、回転洗浄具50が洗浄してできる汚濁水を水道管1の外部に排出する。この洗浄工程は、水道管1を断水することなく、すなわち、有圧の状態で作業するので、回転洗浄具50が洗浄してできる汚濁水は、図25の矢印で示すように、分岐管2から補修弁28を通過して両フランジ短管10に設けた排水弁57から外部に排出される。
(2) Cleaning Step As shown in FIGS. 24 and 25, the repair valve 28 is opened, and the rotary cleaning tool 50 is inserted into the water pipe 1 through the branch pipe 2 from both flange short pipes 10, and the rotary cleaning tool 50 is inserted. The water pipe 1 is washed by rotating. The rotary cleaning tool 50 moves forward while rotating, and the inner surface of the water pipe 1 is cleaned to a predetermined position. In the cleaning process, the inner surface of the branch pipe 2 can also be cleaned by rotating the rotary cleaning tool 50 even when passing through the branch pipe 2. In the cleaning process, the drain valve 57 connected to the both flange short pipes 10 is opened, and the branch pipe 2 and the water pipe 1 are cleaned with the rotary cleaning tool 50 while draining with the drain valve 57. By draining from the drain valve 57, the polluted water which the rotary cleaning tool 50 wash | cleans is discharged | emitted to the exterior of the water pipe 1. FIG. Since this washing process works without shutting off the water pipe 1, that is, under pressure, the polluted water produced by washing with the rotary washing tool 50 is the branch pipe 2 as shown by the arrow in FIG. Then, it passes through the repair valve 28 and is discharged to the outside from the drain valve 57 provided in the both flange short pipes 10.

(3)回収工程
水道管1の洗浄が終了すると、図23に示すように、回転洗浄具50を分岐管2から両フランジ短管10内に後退させた後、補修弁28を閉じて、回転洗浄具50を回収する。以上の工程で、回転洗浄具50による水道管1の洗浄、すなわち擦り洗いが完了する。
(3) Recovery process When cleaning of the water pipe 1 is completed, as shown in FIG. 23, the rotary cleaning tool 50 is retracted from the branch pipe 2 into the short flange pipe 10, and then the repair valve 28 is closed and rotated. The cleaning tool 50 is collected. With the above process, the cleaning of the water pipe 1 with the rotary cleaning tool 50, that is, the scrubbing is completed.

回転洗浄具50で断水することなく洗浄された水道管1は、両フランジ短管10を外すことなく、図26に示すように、洗管ピグ3を両フランジ短管10から補修弁28に通過させて水道管1に挿入して、洗管ピグ3で水道管1を洗浄する。このように、補修弁28から両フランジ短管10を外すことなく、洗管ピグ3を水道管1に挿入して洗浄する方法は、洗浄時間を短くする点において有効である。とくに、洗管ピグ3による洗浄の前工程として、回転洗浄具50による洗浄を行う洗浄方法は、回転洗浄具50による洗浄工程から洗管ピグ3による洗浄工程への移行にかかる時間を短縮することが重要である。これらの洗浄工程の移行に時間がかかると、全体としての作業時間が長くなり、また、場合によっては、限られた断水時間を無駄に消費するからである。図26に示す両フランジ短管10は、第2フランジ10Bから止水フランジ蓋56を取り外して、第2フランジ10Bに三フランジY字管11を連結して、洗管ピグ3を水道管1に挿入するので、洗管ピグ3の挿入作業を簡単かつ容易にしながら、作業時間を短縮できる特徴が実現される。   As shown in FIG. 26, the water pipe 1 cleaned without being cut off by the rotary cleaning tool 50 passes through the washing pipe pig 3 from the both flange short pipes 10 to the repair valve 28 without removing the both flange short pipes 10. The water pipe 1 is inserted into the water pipe 1 and the water pipe 1 is washed with the washing pipe pig 3. Thus, the method of inserting and washing the washing pipe pig 3 into the water pipe 1 without removing both flange short pipes 10 from the repair valve 28 is effective in shortening the washing time. In particular, as a pre-process of cleaning with the washing tube pig 3, the cleaning method of cleaning with the rotary cleaning tool 50 shortens the time required for the transition from the cleaning process with the rotary cleaning tool 50 to the cleaning process with the cleaning tube pig 3. is important. This is because, if it takes time to shift to these cleaning steps, the overall work time becomes longer, and in some cases, the limited water shut-off time is wasted. 26, the double flange Y-shaped pipe 11 is connected to the second flange 10B by removing the water stop flange cover 56 from the second flange 10B, and the washing pipe pig 3 is connected to the water pipe 1. Since it inserts, the characteristic which can shorten work time, implement | achieving the insertion work of the washing pipe pig 3 simply and easily is implement | achieved.

洗管ピグ3は、以下のようにして水道管1に挿入されて、水道管1を洗浄する。
(1)補修弁28を閉じて、両フランジ短管10の第2フランジ10Bから止水フランジ蓋56を取り外す。
(2)両フランジ短管10の第2フランジ10Bに、三フランジY字管11を連結する。図26は、両フランジ短管10に送り込み側の三フランジY字管11を連結する状態を示している。図示しないが、取り出し側に配置される両フランジ短管も、止水フランジ蓋を取り外した後、第2フランジに取り出し側の三フランジY字管を連結する。
(3)洗管ピグ3で洗浄する領域の両側、すなわち送り込み側の分岐管の外側と、取り出し側の分岐管の外側に連結している仕切弁(図示せず)を閉弁して断水する。
すなわち、以上の工程を、水道管1を断水することなく行うことができる。
(4)補修弁28を開弁すると共に、送り込み側の三フランジY字管11の直管11Aを開口して、水道管1に向かってガイドベラ40を挿入する。ガイドベラ40は、湾曲ガイド部41の先端が取り出し側の分岐管2の方向を向く姿勢で挿入する。ガイドベラ40は、湾曲ガイド部41の先端が水道管1の底面に接触する位置まで挿入する。
(5)送り込み側の分岐管2の所定の位置にガイドベラ40をセットした状態で、送り込み側の三フランジY字管11の直管11Aから洗管ピグ3を入れた後、直管11Aの開口端を閉塞する。
(6)送り込み側の三フランジY字管11の上端に設けているカップリング13を介して加圧流体源24を連結する。加圧流体源24から加圧流体を供給して、洗管ピグ3を、三フランジY字管11と両フランジ短管10と分岐管2に通過させ、さらに分岐管2から水道管1に圧送する。このとき、洗管ピグ3は、送り込み側の分岐管2に挿入されたガイドベラ40の湾曲ガイド部41に沿って、分岐管2から水道管1へスムーズに移送される。さらに、送り込み側の三フランジY字管11から加圧流体を供給して、洗管ピグ3を送り込み側から取り出し側に圧送する。
その後、前述したように、洗管ピグ3を水道管内で移送させて、水道管1を洗浄する。
The washing pipe pig 3 is inserted into the water pipe 1 as follows to wash the water pipe 1.
(1) The repair valve 28 is closed, and the water stop flange cover 56 is removed from the second flange 10B of both flange short pipes 10.
(2) The three-flange Y-shaped pipe 11 is connected to the second flange 10 </ b> B of both the flanged short pipes 10. FIG. 26 shows a state where the three-flange Y-shaped pipe 11 on the feeding side is connected to the both flange short pipes 10. Although not shown, both flange short pipes arranged on the take-out side also connect the three-flange Y-shaped pipe on the take-out side to the second flange after removing the water-stop flange cover.
(3) Water is shut off by closing a gate valve (not shown) connected to both sides of the region to be cleaned with the washing pipe pig 3, that is, outside the branch pipe on the feeding side and outside the branch pipe on the take-out side. .
That is, the above process can be performed without shutting off the water pipe 1.
(4) The repair valve 28 is opened, the straight pipe 11A of the three-flange Y-shaped pipe 11 on the feeding side is opened, and the guide spatula 40 is inserted toward the water pipe 1. The guide spatula 40 is inserted in such a posture that the tip of the curved guide portion 41 faces the direction of the branch pipe 2 on the take-out side. The guide spatula 40 is inserted to a position where the tip of the curved guide portion 41 contacts the bottom surface of the water pipe 1.
(5) In the state where the guide spatula 40 is set at a predetermined position of the branch pipe 2 on the feeding side, the washing pipe pig 3 is inserted from the straight pipe 11A of the three-flange Y-shaped pipe 11 on the feeding side, and then the opening of the straight pipe 11A Close the end.
(6) The pressurized fluid source 24 is connected through the coupling 13 provided at the upper end of the three-flange Y-shaped pipe 11 on the feeding side. The pressurized fluid is supplied from the pressurized fluid source 24, and the washing pipe pig 3 is passed through the three-flange Y-shaped pipe 11, the both flanged short pipes 10 and the branch pipe 2, and is further pumped from the branch pipe 2 to the water pipe 1. To do. At this time, the washing pipe pig 3 is smoothly transferred from the branch pipe 2 to the water pipe 1 along the curved guide portion 41 of the guide spatula 40 inserted into the branch pipe 2 on the feeding side. Further, pressurized fluid is supplied from the three-flange Y-shaped tube 11 on the feeding side, and the washing tube pig 3 is pressure-fed from the feeding side to the removal side.
Thereafter, as described above, the washing pipe pig 3 is transferred in the water pipe and the water pipe 1 is washed.

洗管ピグ3を取り出し側の三フランジY字管から取り出して洗管ピグによる洗浄が完了した後、補修弁28を閉じて三フランジY字管11と両フランジ短管10を外す。その後、補修弁28に空気弁58を連結して水道管1の洗浄が完了する。   After the washing tube pig 3 is taken out from the three-flange Y-shaped tube on the take-out side and cleaning by the washing tube pig is completed, the repair valve 28 is closed and the three-flange Y-shaped tube 11 and both flange short tubes 10 are removed. Thereafter, the air valve 58 is connected to the repair valve 28 to complete the cleaning of the water pipe 1.

本発明の一実施例にかかる洗浄方法で洗浄される水道管を示す概略断面図である。It is a schematic sectional drawing which shows the water pipe wash | cleaned with the washing | cleaning method concerning one Example of this invention. 図1に示す水道管に連結している送り込み側の分岐管に回転洗浄具を挿入して水道管を洗浄する状態を示す拡大断面図である。It is an expanded sectional view which shows the state which inserts a rotation washing tool into the branch pipe of the sending side connected with the water pipe shown in FIG. 1, and wash | cleans a water pipe. 図2に示す送り込み側の分岐管から洗管ピグを挿入する状態を示す拡大断面図である。It is an expanded sectional view which shows the state which inserts a washing pipe pig from the branch pipe by the side of feeding shown in FIG. 図1に示す水道管に連結している取り出し側の分岐管に回転洗浄具を挿入して水道管を洗浄する状態を示す拡大断面図である。It is an expanded sectional view which shows the state which inserts a rotation washing tool in the branch pipe of the taking-out side connected with the water pipe shown in FIG. 1, and wash | cleans a water pipe. 図4に示す取り出し側の分岐管から洗管ピグを取り出す状態を示す拡大断面図である。It is an expanded sectional view which shows the state which takes out a washing pipe pig from the extraction side branch pipe shown in FIG. ガイドベラの一例を示す斜視図である。It is a perspective view which shows an example of a guide spatula. 図6に示すガイドベラの垂直断面図である。FIG. 7 is a vertical sectional view of the guide spatula shown in FIG. 6. 図6に示すガイドベラを分岐管に挿入した状態を示す水平断面図である。It is a horizontal sectional view which shows the state which inserted the guide spatula shown in FIG. 6 in the branch pipe. ガイドベラの他の一例を示す垂直断面図である。It is a vertical sectional view showing another example of the guide spatula. 図9に示すガイドベラの正面図である。It is a front view of the guide spatula shown in FIG. 図9に示すガイドベラの斜視図である。It is a perspective view of the guide spatula shown in FIG. ガイドベラの他の一例を示す垂直断面図である。It is a vertical sectional view showing another example of the guide spatula. 図12に示すガイドベラの正面図である。It is a front view of the guide spatula shown in FIG. 図12に示すガイドベラの平面図である。It is a top view of the guide spatula shown in FIG. 図12に示すガイドベラの湾曲ガイド部を示す断面斜視図である。It is a cross-sectional perspective view which shows the curve guide part of the guide spatula shown in FIG. 図12に示すガイドベラを送り込み側の分岐管に挿入する状態を示す断面図である。It is sectional drawing which shows the state which inserts the guide spatula shown in FIG. 12 in the branch pipe by the side of sending. 図12に示すガイドベラを取り出し側の分岐管に挿入する状態を示す断面図である。It is sectional drawing which shows the state which inserts the guide spatula shown in FIG. 12 in the branch pipe by the side of taking out. 本発明の一実施例にかかる水道管の洗浄方法を示す概略断面図である。It is a schematic sectional drawing which shows the washing | cleaning method of the water pipe concerning one Example of this invention. 洗管ピグの一例を示す斜視図である。It is a perspective view which shows an example of a washing pipe pig. 図19に示す洗管ピグの断面図である。It is sectional drawing of the washing pipe pig shown in FIG. 洗管ピグの他の一例を示す断面図である。It is sectional drawing which shows another example of a washing pipe pig. 補修弁に空気弁を連結している分岐管を示す一部断面図である。It is a partial cross section figure which shows the branch pipe which has connected the air valve to the repair valve. 補修弁に両フランジ短管を連結する状態を示す断面図である。It is sectional drawing which shows the state which connects both flange short pipes to a repair valve. 回転洗浄具で水道管を洗浄する状態を示す断面図である。It is sectional drawing which shows the state which wash | cleans a water pipe with a rotary cleaning tool. 回転洗浄具で水道管を洗浄する状態を示す断面図である。It is sectional drawing which shows the state which wash | cleans a water pipe with a rotary cleaning tool. 図25に示す分岐管から洗管ピグを挿入する状態を示す断面図である。It is sectional drawing which shows the state which inserts a washing pipe pig from the branch pipe shown in FIG.

符号の説明Explanation of symbols

1…水道管
2…分岐管
3…洗管ピグ
4…本体ピグ
5…ガイドピグ
6…折曲部 6A…枝
7…研磨層
8…仕切弁
9…連結部
10…両フランジ短管 10a…テーパー管
10b…フランジ
10A…第1フランジ
10B…第2フランジ
11…三フランジY字管 11A…直管
11B…分岐管
12…開閉弁
13…カップリング
14…開閉弁
15…カップリング
16…圧力計
17…開閉弁
18…チーズ
19…開閉弁
20…開閉弁
21…カップリング
22…カップリング
23…仕切弁
24…加圧流体源
25…加圧流体源
26…加圧流体源
27…真空装置
28…補修弁 28a…弁本体
28b…フランジ
40…ガイドベラ
41…湾曲ガイド部
42…鍔部
43…テーパー部
44…幅狭部
45…本体部
46…切り込み
47…櫛片
50…回転洗浄具
51…可撓性線材
52…回転動力源
53…回転ブラシ
54…チューブ
55…チャック
56…止水フランジ蓋
57…排水弁
58…空気弁
DESCRIPTION OF SYMBOLS 1 ... Water pipe 2 ... Branch pipe 3 ... Washing pipe pig 4 ... Main body pig 5 ... Guide pig 6 ... Bending part 6A ... Branch 7 ... Polishing layer 8 ... Gate valve 9 ... Connection part 10 ... Both flange short pipes 10a ... Tapered pipe
10b ... Flange
10A ... 1st flange
10B ... 2nd flange 11 ... Three flange Y-shaped pipe 11A ... Straight pipe
11B ... Branch pipe 12 ... Open / close valve 13 ... Coupling 14 ... Open / close valve 15 ... Coupling 16 ... Pressure gauge 17 ... Open / close valve 18 ... Cheese 19 ... Open / close valve 20 ... Open / close valve 21 ... Coupling 22 ... Coupling 23 ... Partition Valve 24 ... Pressurized fluid source 25 ... Pressurized fluid source 26 ... Pressurized fluid source 27 ... Vacuum device 28 ... Repair valve 28a ... Valve body
28b ... Flange 40 ... Guide spatula 41 ... Curved guide part 42 ... Saddle part 43 ... Tapered part 44 ... Narrow part 45 ... Main body part 46 ... Cut 47 ... Comb piece 50 ... Rotary cleaning tool 51 ... Flexible wire 52 ... Rotational power Source 53 ... Rotating brush 54 ... Tube 55 ... Chuck 56 ... Water stop flange lid 57 ... Drain valve 58 ... Air valve

Claims (8)

水道管(1)に連結している送り込み側の消火栓と空気管と泥吐き部のいずれかからなる分岐管(2)から洗管ピグ(3)を挿入し、挿入された洗管ピグ(3)を圧送する加圧流体を分岐管(2)に供給して、この加圧流体で洗管ピグ(3)を分岐管(2)から水道管(1)内に移送し、さらに加圧流体でもって水道管(1)に洗管ピグ(3)を圧送して、洗管ピグ(3)でもって水道管(1)の内面を擦り洗いし、水道管(1)を擦り洗いした洗管ピグ(3)を、水道管(1)から取り出し側の分岐管(2)に移送して外部に取り出す水道管の洗浄方法であって、
後端を回転動力源(52)に連結して先端に回転洗浄具(50)を連結している可撓性線材(51)を、分岐管(2)から水道管(1)に挿通して先端の回転洗浄具(50)を水道管(1)内に挿入し、回転動力源(52)で可撓性線材(51)を介して回転洗浄具(50)を回転して水道管(1)の内面の異物を除去し、その後、洗管ピグ(3)を分岐管(2)から水道管(1)に挿入して洗管ピグ(3)で水道管(1)を擦り洗いすることを特徴とする水道管の洗浄方法。
Insert the wash pipe pig (3) from the fire hydrant on the feed side connected to the water pipe (1), the branch pipe (2) consisting of either an air pipe or mud spout, and the inserted wash pipe pig (3 ) Is supplied to the branch pipe (2), and the wash pipe pig (3) is transferred from the branch pipe (2) into the water pipe (1) with this pressurized fluid. Therefore, the washing pipe pig (3) is pumped to the water pipe (1), the inner surface of the water pipe (1) is washed with the washing pipe pig (3), and the water pipe (1) is washed with water. A method for cleaning a water pipe that takes the pig (3) from the water pipe (1) to the branch pipe (2) on the take-out side and takes it out.
Insert the flexible wire (51) with the rear end connected to the rotary power source (52) and the rotary cleaning tool (50) to the tip from the branch pipe (2) to the water pipe (1). Insert the rotary cleaning tool (50) at the tip into the water pipe (1) and rotate the rotary cleaning tool (50) through the flexible wire (51) with the rotary power source (52) to turn the water pipe (1 ), And then wash the water pipe (1) with the washing pipe pig (3) by inserting the washing pipe pig (3) into the water pipe (1) from the branch pipe (2). A method for cleaning water pipes.
分岐管(2)から水道管(1)の連結部(9)に向かって、洗管ピグ(3)を水道管(1)から分岐管(2)に、または分岐管(2)から水道管(1)に移送する湾曲ガイド部(41)を有するガイドベラ(40)を挿入し、このガイドベラ(40)に沿って、先端に回転洗浄具(50)を連結している可撓性線材(51)を挿入して水道管(1)の内面の異物を除去して、前記ガイドベラ(40)を、先端に回転洗浄具(50)を連結している可撓性線材(51)の挿入と、分岐管(2)と水道管(1)の間の洗管ピグ(3)の移送ガイドに併用する請求項1に記載される水道管の洗浄方法。   From the branch pipe (2) to the connecting part (9) of the water pipe (1), wash the pig (3) from the water pipe (1) to the branch pipe (2), or from the branch pipe (2) to the water pipe Insert a guide spatula (40) having a curved guide part (41) to be transferred to (1), and connect the rotary cleaning tool (50) to the tip along the guide spatula (40) (51 ) To remove foreign matter on the inner surface of the water pipe (1), the guide spatula (40), insertion of the flexible wire (51) connecting the rotary cleaning tool (50) to the tip, The method for cleaning a water pipe according to claim 1, which is used in combination with a transfer guide for a washing pipe pig (3) between the branch pipe (2) and the water pipe (1). 前記回転洗浄具(50)に回転ブラシ(53)を使用する請求項1に記載される水道管の洗浄方法。   The water pipe cleaning method according to claim 1, wherein a rotary brush (53) is used for the rotary cleaning tool (50). 分岐管(2)から水道管(1)に挿入する洗管ピグ(3)に、本体ピグ(4)の先端にロッド状又は紐状の折曲部(6)を介してガイドピグ(5)を連結している洗管ピグ(3)を使用する請求項1に記載される水道管の洗浄方法。   Insert the guide pig (5) into the washing pipe pig (3) inserted from the branch pipe (2) into the water pipe (1) through the rod-like or string-like bent part (6) at the tip of the main body pig (4). The method for cleaning a water pipe according to claim 1, wherein the connecting pipe (3) is used. 分岐管(2)から水道管(1)に挿入する洗管ピグ(3)に、本体ピグ(4)の先端に折曲部(6)を介して、外径を80mmよりも太い円柱状または球形状のガイドピグ(5)を連結している洗管ピグ(3)を使用する請求項1に記載される水道管の洗浄方法。   From the branch pipe (2) to the washing pipe pig (3) to be inserted into the water pipe (1), the outer diameter of the cylinder is larger than 80 mm through the bent part (6) at the tip of the main body pig (4) or The method for cleaning a water pipe according to claim 1, wherein a washing pipe pig (3) connected to a spherical guide pig (5) is used. 前記分岐管(2)に補修弁(28)を連結している水道管(1)を洗浄する方法であって、回転洗浄具(50)を補修弁(28)に通過させて分岐管(2)から水道管(1)に挿入して洗浄する請求項1に記載される水道管の洗浄方法。   A method of cleaning a water pipe (1) connecting a repair valve (28) to the branch pipe (2), wherein a rotary cleaning tool (50) is passed through the repair valve (28) and the branch pipe (2 The water pipe cleaning method according to claim 1, wherein the water pipe is inserted into the water pipe (1) and washed. 補修弁(28)を閉じる状態で、両フランジ短管(10)の第1フランジ(10A)を補修弁(28)を介して分岐管(2)に連結し、他方のフランジ(10b)である第2フランジ(10B)には止水フランジ蓋(56)を固定し、両フランジ短管(10)の内部に回転洗浄具(50)を配置して、この回転洗浄具(50)に連結している可撓性線材(51)を止水フランジ蓋(56)に回転できるが水漏れしないように貫通させる準備工程と、
補修弁(28)を開いて回転洗浄具(50)を両フランジ短管(10)から分岐管(2)を通過して水道管(1)に挿入して水道管(1)を洗浄する洗浄工程と、
回転洗浄具(50)を分岐管(2)から両フランジ短管(10)内に後退させた後、補修弁(28)を閉じる回収工程とからなる請求項6に記載される水道管の洗浄方法。
With the repair valve (28) closed, the first flange (10A) of both flange short pipes (10) is connected to the branch pipe (2) through the repair valve (28), and the other flange (10b) A water stop flange cover (56) is fixed to the second flange (10B), and a rotary cleaning tool (50) is arranged inside the short pipes (10) of both flanges and connected to the rotary cleaning tool (50). A flexible wire rod (51) that can be rotated to the water-stop flange lid (56), but to pass through so as not to leak water, and
Washing the water pipe (1) by opening the repair valve (28) and inserting the rotary cleaning tool (50) from both flange short pipes (10) through the branch pipe (2) into the water pipe (1) Process,
7. The water pipe cleaning according to claim 6, further comprising a recovery step of closing the repair valve (28) after the rotary cleaning tool (50) is retracted from the branch pipe (2) into both flange short pipes (10). Method.
前記両フランジ短管(10)に排水弁(57)を連結して、排水弁(57)で排水しながら回転洗浄具(50)で水道管(1)を洗浄する請求項7に記載される水道管の洗浄方法。   The drainage valve (57) is connected to the both flange short pipes (10), and the water pipe (1) is washed with the rotary cleaning tool (50) while draining with the drainage valve (57). How to clean water pipes.
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Publication number Priority date Publication date Assignee Title
JP2010269010A (en) * 2009-05-22 2010-12-02 Kubota Engineer:Kk Cleaning brush
JP2011101847A (en) * 2009-11-11 2011-05-26 Kubota Corp Method and apparatus for washing inside of water pipe
JP2012096197A (en) * 2010-11-05 2012-05-24 Kubota Corp Method for cleaning inside surface of pipe and crushing tool
JP2012096198A (en) * 2010-11-05 2012-05-24 Kubota Corp Method for cleaning inside surface of pipe
JP2012096196A (en) * 2010-11-05 2012-05-24 Kubota Corp Washing method for inner face of pipe and jig for recovery
CN102794284A (en) * 2012-08-10 2012-11-28 中铁隧道集团有限公司 Dredge device of annular embedded corrugated pipe duct and dredge method thereof
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KR102335828B1 (en) * 2021-07-13 2021-12-06 주식회사 대현이엔씨 Water Pipe Cleaning Device using Clean Ball and Cleaning Method using the same

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