JP3414636B2 - Pig for washing pipe - Google Patents
Pig for washing pipeInfo
- Publication number
- JP3414636B2 JP3414636B2 JP05871498A JP5871498A JP3414636B2 JP 3414636 B2 JP3414636 B2 JP 3414636B2 JP 05871498 A JP05871498 A JP 05871498A JP 5871498 A JP5871498 A JP 5871498A JP 3414636 B2 JP3414636 B2 JP 3414636B2
- Authority
- JP
- Japan
- Prior art keywords
- pig
- diameter
- pipe
- washing
- pipes
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Sink And Installation For Waste Water (AREA)
- Cleaning In General (AREA)
Description
【発明の詳細な説明】
【０００１】
【発明の属する技術分野】この発明は、洗管用ピグに関
し、詳しくは径の異なる管であっても一種類で適用可能
な洗管用ピグに関する。
【０００２】
【従来の技術】管路内には経年的に錆や水垢等が付着
し、次第に流れの効率が低下してくる。特に下水管は、
上記の付着物の他に下水中の不純物が管壁に堆積し、ま
た下水中の有機物を養分として各種藻類が内壁に繁茂す
ることがあるので流れの効率の低下は上水道管路に比べ
激しい。
【０００３】従って、定期的に管路の清掃が必要とな
り、この管路清掃の手段としてピグ洗管が知られてい
る。このピグ洗管は、管内径にほぼ合致した径の浮遊体
を管路内に挿入し、流体圧力を利用して強制的に下流へ
と圧送し、その摩擦を利用して管内の汚損物質や錆等の
付着物を除去するものである。
【０００４】
【発明が解決しようとする課題】ところで、上記ピグ洗
管に使用されるピグは径が小さすぎると管壁に対する接
触圧が得られないので充分な洗管ができず、大き過ぎる
と管内に詰まって洗管そのものが不可能となる。
【０００５】従って、対象となる管毎に径の合ったピグ
を用意する必要があり、ピグの保管管理が面倒となる問
題があった。さらに、管路によっては途中で管径が変化
している場合があり、この変化部に差しかかれば、当然
ピグの径が不適格となるのでこの部分の洗管ができなく
なる欠点があった。
【０００６】この発明は上記問題を解消することを目的
としてなされたものであり、ピグ洗管を行なう場合、大
小径の異なる管であっても一種のピグで洗管が行なえ、
また途中で管径が変化する管路であっても、変化部の内
面も洗管できる洗管用ピグを提供することを目的として
なされたものである。
【０００７】
【課題を解決するための手段】この目的を達成するた
め、本発明では洗管用ピグを、曲げ弾性を有する材料よ
りなる割りリングであって、径が次第に小さくなる複数
個の割りリングを、最大径のものから最小径のものまで
順に同軸に配置し、該複数のリング体を支持骨で一体に
連結してなる洗管用ピグ骨組みと、該洗管用ピグ骨組み
に最小径側先端から被せ、最大径側後端で開口を閉じた
袋状被覆材とから構成した。
【０００８】従って、この発明によれば、ピグは洗管用
骨組みの曲げ弾性によって管内面に弾力的に接触するの
で、この弾性範囲内であれば、径の異なる管であっても
適用可能となり、また途中で径の異なる管であっても確
実に洗管できるのである。
【０００９】
【発明の実施の形態】次に、この発明の洗管用ピグの実
施の形態について説明する。図１はこの発明の一実施の
形態の洗管用ピグ骨組みの斜視図、図２は組み立てた状
態の断面図である。
【００１０】図１において、洗管用ピグ１の骨組み２
は、ばね鋼板や硬質プラスチックのなど曲げ弾性を有す
る材料よりなる割りリングであって、径が次第に小さく
なる複数個の割りリング３、４、５を、最大径のもの３
から最小径のもの５まで順に同軸に配置し、これら複数
のリング体３〜５を支持骨６…６で一体に連結して形成
され、割り部３Ａ、４Ａ、５Ａで矢印方向に弾性変形す
ることによって径が収縮変形可能とされている。
【００１１】なお、図中７は骨組み２先端に設けられた
コーンキャップを示し、必要に応じ取り付けられる。ま
た、図３（ａ）に示すようにリング体３の割り部３Ａを
挟む一方側３Ｂには図３（ｂ）に拡大して示すように、
他方側３Ｃの先端部を係止する係止部８が周方向に複数
にわたって形成され、使用する管の内径に応じて最大径
のリング３の径が縮小可能とされている。
【００１２】そして、図２に示すように洗管用ピグ骨組
み２の最小径側５あるいはコーンキャップ７（図示例は
コーンキャップ７）側から、袋状被覆材９が被せられ、
最大径側割りリング３の後端で開口９Ａを閉じて構成さ
れている。
【００１３】上記において洗管用ピグ骨組み２を覆う袋
状被覆材９は、耐摩耗性のあるシートまたは布とされ、
例えばアラミド繊維、ナイロン繊維等の繊維からなる織
布や帆布などが使用される。
【００１４】次に上記洗管用ピグの使用法について説明
する。まず、最大径の割りリング３の径を洗管しようと
する管１０の内径に合わせ、割り３Ａを挟む割りリング
３の一方側３Ｂの適当な係止部８に、他方側３Ｃの先端
部を係止し縮径することによって径を調整する。
【００１５】なお、骨組みを構成する割りリング３の弾
性反発力によって生じる管壁との摩擦力が管内の流体圧
力より小さい場合は割りリング３の縮径のための端部３
Ｂと３Ｃの係止は特に必要はない。
【００１６】次に、図２に示したように、骨組み２に袋
状被覆材９を骨組み２の最小径リング５側から被せ、最
大径側の割りリング３Ａの端面で袋状被覆材６の開口部
６Ａを結止する。
【００１７】このように組み立てた洗管用ピグ１を図４
に示すように目的の管１０に挿入し内部流体Ｗの圧力を
利用して下流側へ移動させる。このとき、洗管用ピグ１
は、骨組みが弾性を有しているので、管内壁に弾撥的に
接触し、管内壁の付着物Ｖを欠き取る。
【００１８】なお、図５に示すように管１０に内径の拡
大部１０Ａがある場合は、上記した最大径リング３の端
部係止をすることなく管内に挿入する。従って、管内径
拡大部に差しかかれば洗管用ピグ１は、骨組みの弾性に
より点線で示すように拡径し拡大部１０Ａ内壁との弾性
接触を保つ。
【００１９】また、径の縮小部に差しかかれば、先端の
最小径リング５部分から縮径しつつ押し込まれて行く。
【００２０】
【発明の効果】以上説明したように、この発明の洗管用
ピグは弾性を有する骨組みと袋状被覆材とから構成した
ので、管内径に弾撥的に接触し少々の径の相違があって
も上記弾性範囲内であれば同一の洗管用ピグで洗管が可
能となる。
【００２１】従って、従来のように管内径に応じて多数
のピグを用意する必要がなく、これらの取り扱いの手間
が省ける。また、この発明の洗管用ピグは、径方向弾撥
力があるので拡径部や縮径部が連続的に続く管であって
も一律に洗管ができる。Description: BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to a pig for washing pipes, and more particularly, to a pig for washing pipes which can be used as a single type even for pipes having different diameters. 2. Description of the Related Art Rust, scale, etc. adhere to pipes over time, and the flow efficiency gradually decreases. Especially the sewer pipe
In addition to the above-mentioned deposits, impurities in the sewage are deposited on the pipe wall, and various algae can proliferate on the inner wall by using organic matter in the sewage as nutrients, so that the efficiency of the flow is greatly reduced as compared with the water pipe. [0003] Therefore, it is necessary to periodically clean the pipe, and a pig washing pipe is known as a means for cleaning the pipe. In this pig washing pipe, a floating body having a diameter substantially matching the inside diameter of the pipe is inserted into the pipe, and is forcibly pumped to the downstream using a fluid pressure. It removes deposits such as rust. [0004] By the way, the pig used in the pig washing tube has too small a diameter so that the contact pressure against the tube wall cannot be obtained. Clogging in the tube makes the washing tube itself impossible. [0005] Therefore, it is necessary to prepare pigs having the same diameter for each target pipe, and there is a problem that the pig storage management is troublesome. Furthermore, there is a case where the pipe diameter is changed in the middle of some pipes, and if this change portion is reached, the diameter of the pig becomes inappropriate, so that there is a disadvantage that the pipe cannot be washed in this portion. SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and when pig washing is performed, even if the pipes have different diameters, the washing can be performed by a kind of pig.
It is another object of the present invention to provide a pig for washing pipe which can wash the inner surface of the changing part even if the pipe diameter changes along the way. In order to achieve this object, according to the present invention, a pig for washing a pipe is provided as a split ring made of a material having bending elasticity, the split ring having a diameter gradually reduced. Are arranged coaxially in order from the largest diameter to the smallest diameter, and a pig-washing pig skeleton in which the plurality of rings are integrally connected by supporting bones, and And a bag-shaped covering material whose opening was closed at the rear end on the maximum diameter side. Therefore, according to the present invention, the pig elastically contacts the inner surface of the pipe due to the bending elasticity of the frame for washing the pipe, so that the pig can be applied to pipes having different diameters within this elastic range. In addition, even if the pipes have different diameters on the way, the pipes can be surely washed. Next, an embodiment of the pig for washing pipe of the present invention will be described. FIG. 1 is a perspective view of a pig-washing pig skeleton according to an embodiment of the present invention, and FIG. 2 is a sectional view of an assembled state. In FIG. 1, a frame 2 of a pig 1 for a washing pipe is shown.
Is a split ring made of a material having a bending elasticity such as a spring steel plate or a hard plastic, and a plurality of split rings 3, 4, 5 of which diameters are gradually reduced are divided into three rings having a maximum diameter.
To the smallest diameter 5 are sequentially arranged coaxially, and the plurality of ring bodies 3 to 5 are formed integrally by supporting bones 6..., And are elastically deformed in the direction of the arrow by the split portions 3A, 4A, and 5A. This allows the diameter to shrink and deform. In the figure, reference numeral 7 denotes a cone cap provided at the tip of the framework 2, which is attached as required. Also, as shown in FIG. 3A, one side 3B of the ring body 3 sandwiching the split portion 3A as shown in FIG.
A plurality of locking portions 8 for locking the distal end of the other side 3C are formed in the circumferential direction, and the diameter of the ring 3 having the maximum diameter can be reduced according to the inner diameter of the pipe to be used. Then, as shown in FIG. 2, a bag-like covering material 9 is put on the minimum diameter side 5 or the cone cap 7 (cone cap 7 in the illustrated example) of the pig frame 2 for washing pipes.
The opening 9 </ b> A is closed at the rear end of the largest diameter side split ring 3. In the above, the bag-like covering material 9 covering the pipe washing pig skeleton 2 is a wear-resistant sheet or cloth,
For example, a woven fabric or a canvas made of fibers such as aramid fiber and nylon fiber is used. Next, how to use the pig for washing pipes will be described. First, the diameter of the split ring 3 having the largest diameter is adjusted to the inner diameter of the pipe 10 to be washed, and the tip of the other side 3C is fitted to an appropriate locking portion 8 on one side 3B of the split ring 3 sandwiching the split 3A. The diameter is adjusted by locking and reducing the diameter. When the frictional force with the pipe wall caused by the elastic repulsive force of the split ring 3 constituting the frame is smaller than the fluid pressure in the pipe, the end 3 for reducing the diameter of the split ring 3 is used.
There is no particular need to lock B and 3C. Next, as shown in FIG. 2, a bag-like covering material 9 is put on the frame 2 from the side of the minimum diameter ring 5 of the frame 2, and the bag-like covering material 6 is applied to the end face of the split ring 3A on the maximum diameter side. The opening 6A is closed. The pig 1 for washing pipes assembled in this manner is shown in FIG.
As shown in (1), it is inserted into the target pipe 10 and is moved downstream using the pressure of the internal fluid W. At this time, pig 1
Since the skeleton has elasticity, it comes into resilient contact with the inner wall of the pipe and removes the deposit V on the inner wall of the pipe. If the tube 10 has an enlarged portion 10A having an inner diameter as shown in FIG. 5, the ring 10 is inserted into the tube without engaging the end of the maximum diameter ring 3 described above. Therefore, the pig for washing pipe 1 is expanded by the elasticity of the skeleton as shown by the dotted line, and keeps elastic contact with the inner wall of the expanded portion 10A when the pipe is inserted into the expanded portion of the inner diameter of the tube. Further, when approaching the reduced diameter portion, it is pushed in while reducing the diameter from the smallest diameter ring 5 at the tip. As described above, since the pig for washing pipe of the present invention is composed of an elastic skeleton and a bag-shaped covering material, it is resiliently contacted with the inner diameter of the pipe and has a slight difference in diameter. Even if there is, the washing pipe can be washed with the same washing pipe pig within the above elastic range. Therefore, it is not necessary to prepare a large number of pigs in accordance with the inner diameter of the pipe as in the prior art, and the handling of these pigs can be omitted. Further, since the pig for washing pipe of the present invention has a radial elasticity, it can be uniformly washed even in a pipe having a continuously enlarged or reduced diameter portion.
【図面の簡単な説明】
【図１】この発明の一実施の形態の分解斜視図である。
【図２】同側断面図である。
【図３】最大径割りリングの説明図で（ａ）は正面図、
（ｂ）は要部の部分断面図である。
【図４】実施の形態の使用状態を示す断面図である。
【図５】実施の形態の他の使用状態を示す断面図であ
る。
【符号の説明】
１ 洗管用ピグ
２ 骨組み
３、４、５ 割りリング
３Ａ、４Ａ、５Ａ 割り部
３Ｂ リング体の割り部を挟む一方側
３Ｃ 他方側
６ 支持骨
７ コーンキャップ
８ 係止部
９ 袋状被覆材
９Ａ 開口
１０ 洗管しようとする管BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of an embodiment of the present invention. FIG. 2 is a side sectional view of the same. FIG. 3 is an explanatory view of a maximum diameter split ring, (a) is a front view,
(B) is a partial sectional view of a main part. FIG. 4 is a cross-sectional view showing a use state of the embodiment. FIG. 5 is a sectional view showing another use state of the embodiment. [Description of Signs] 1 Pig for washing pipe 2 Frame 3, 4, 5 Split ring 3A, 4A, 5A Split portion 3B One side 3C sandwiching the split portion of the ring body 6 Other side 6 Support bone 7 Cone cap 8 Locking portion 9 Bag 9A Opening 10 Tube to be washed
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平１−249184（ＪＰ，Ａ) 実開 平４−65182（ＪＰ，Ｕ) 実開 平６−3482（ＪＰ，Ｕ) 実開 昭61−2587（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) B08B 1/00 - 9/06 E03C 1/302 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-1-249184 (JP, A) JP-A-4-65182 (JP, U) JP-A-6-3482 (JP, U) JP-A-61- 2587 (JP, U) (58) Field surveyed (Int. Cl. 7 , DB name) B08B 1/00-9/06 E03C 1/302
Claims (1)
グであって、径が次第に小さくなる複数個の割りリング
を、最大径のものから最小径のものまで順に同軸に配置
し、該複数のリング体を支持骨で一体に連結してなる洗
管用ピグ骨組みと、該洗管用ピグ骨組みに最小径側先端
から被せ、最大径側後端で開口を閉じた袋状被覆材とか
らなることを特徴とする洗管用ピグ。(57) [Claims 1] A split ring made of a material having bending elasticity, wherein a plurality of split rings having a gradually decreasing diameter are sequentially arranged from a largest diameter to a smallest diameter. A pig-washing pig skeleton that is coaxially arranged, and the plurality of ring bodies are integrally connected by a supporting bone, and a bag that covers the pig-washing pig skeleton from the front end at the minimum diameter side and closes the opening at the rear end at the maximum diameter side. A pig for washing pipes, comprising: a coating material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05871498A JP3414636B2 (en) | 1998-03-11 | 1998-03-11 | Pig for washing pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05871498A JP3414636B2 (en) | 1998-03-11 | 1998-03-11 | Pig for washing pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11253902A JPH11253902A (en) | 1999-09-21 |
| JP3414636B2 true JP3414636B2 (en) | 2003-06-09 |
Family
ID=13092173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP05871498A Expired - Fee Related JP3414636B2 (en) | 1998-03-11 | 1998-03-11 | Pig for washing pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3414636B2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4538431B2 (en) * | 2006-07-24 | 2010-09-08 | 株式会社栗本鐵工所 | Water pipe washing method and water pipe washing pipe pig used for this method |
| JP4489797B2 (en) * | 2006-12-20 | 2010-06-23 | 株式会社栗本鐵工所 | Cleaning method for water pipes and guide spatula for washing pipe pig used in this method |
| JP4500334B2 (en) * | 2007-07-31 | 2010-07-14 | 株式会社栗本鐵工所 | Water pipe washpig |
| CN102015129B (en) * | 2008-03-14 | 2014-03-19 | 迪瓦西公司 | Cleaning bullet and method of operating the same |
| US8973738B2 (en) | 2011-03-28 | 2015-03-10 | Diversey, Inc. | Cleaning device |
| CN102698990B (en) * | 2012-06-08 | 2015-03-04 | 哈尔滨工业大学 | Long-distance hydraulic power pipe scraper capable of passing through valve |
| CN104631581B (en) * | 2015-01-26 | 2017-04-05 | 黎铁良 | A kind of pipe dredging device |
-
1998
- 1998-03-11 JP JP05871498A patent/JP3414636B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH11253902A (en) | 1999-09-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |