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JP4140933B2 - Tube with internal spiral guideway - Google Patents
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JP4140933B2 - Tube with internal spiral guideway - Google Patents

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Publication number
JP4140933B2
JP4140933B2 JP05229498A JP5229498A JP4140933B2 JP 4140933 B2 JP4140933 B2 JP 4140933B2 JP 05229498 A JP05229498 A JP 05229498A JP 5229498 A JP5229498 A JP 5229498A JP 4140933 B2 JP4140933 B2 JP 4140933B2
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JP
Japan
Prior art keywords
main body
guide path
tube
pipe
spiral guide
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JP05229498A
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Japanese (ja)
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JPH11248049A (en
Inventor
鈴木  茂
裕英 中川
孝育 吉井
俊秀 野中
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Chemical Corp
Kubota Corp
Sekisui Chemical Co Ltd
Original Assignee
Kubota Corp
Mitsubishi Plastics Inc
Sekisui Chemical Co Ltd
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Priority to JP05229498A priority Critical patent/JP4140933B2/en
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Description

【0001】
【発明の属する技術分野】
本発明は、自然流下式の垂直下水道管路に使用して好適な内面螺旋案内路付き管に関するものである。
【0002】
【従来の技術】
マンホール内に下水を流入させる際に、マンホール内に流入した下水を減衰させるため、例えば、実開平4─53842号公報に記載されているように、マンホール内に垂直下水管路(ドロップシャフト)を配置する方法が実施されている。垂直下水管路には、垂直に配置された直管状の管本体部の内部に、下水を螺旋状態で流下するように案内する螺旋案内路が設けられた螺旋案内路付き管が使用されている。又、螺旋案内路の軸芯部には、螺旋案内路にて案内される下水中に含まれた空気を上方に排除するために空気芯筒が設けられている。
【0003】
このうよな螺旋案内路付き管では、その上端部に流入する下水が、螺旋案内路に沿って流下する間に減衰される。従って、マンホールの底部等が、流下する下水によって強い衝撃を受けるおそれがなく、マンホール底部の摩耗が抑制される。
【0004】
【発明が解決しようとする課題】
縦管本体部内に流入する下水を螺旋状に流下するように案内する螺旋案内路は、通常は、管本体部における下水流入部よりも下方に設けられている。従って、縦管本体部の上端面から下水が自然落下によって流入する場合には、螺旋案内路に下水が衝突して大きな騒音が発生するおそれがある。又、自然流下する下水内に空気が混入することによって、臭気が発生するおそれもある。
【0005】
更に、自然流下によって縦管本体部内に下水を流下させる際に、内径が順次縮小されたレジューサーを使用する方法もあるが、この場合には、レジューサー内を流下する下水の流速が一時的に増加するために、縦管本体部内に流下した下水が螺旋案内路に衝突して発生する騒音が大きくなるという問題点がある。又、レジューサー内では渦流が発生するために、その渦流の方向が螺旋案内路による下水の螺旋流と反対向きに形成されると、下水は縦管本体部内の螺旋案内路に沿って円滑に流下することができず、騒音、臭気等が発生するおそれがある。
【0006】
本発明は、このような従来の問題点を解消し、流入管から流れ込む流体を、騒音、臭気等の発生を抑制した状態で、ほぼ垂直な縦管本体部内に円滑に流下させることができ、かつ、メンテナンスが容易な内面螺旋案内路付き管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】
本願の請求項1に記載の発明(本発明1)は、直管状の縦管本体部内に空気芯筒と螺旋案内路が設けられた内面螺旋案内路付き管であって、前記縦管本体部又はその延設部の前記螺旋案内路の上端部よりも上方の部分に流入管が接続され、前記空気芯筒の上部に空気芯筒延設部が着脱自在に連結され、該空気芯筒延設部の側方に、前記螺旋案内路の上端部付近から前記流入管の管頂よりも上方に到るまでの、縦管本体部又はその延設部までの間を横断するように遮蔽板が立設され、該空気芯筒延設部の上端部が前記縦管本体部又はその延設部の上端部に係止されている内面螺旋案内路付き管である。
【0008】
本願の請求項2に記載の発明(本発明2)は、前記空気芯筒延設部の上端部が係止された前記縦管本体部又はその延設部の上端部が、取外し自在な蓋体とされている本発明1に記載の内面螺旋案内路付き管である。
【0009】
本願の請求項3に記載の発明(本発明3)は、前記縦管本体部の上端部に縦管本体部延設部が接続され、その縦管本体部延設部の前記螺旋案内路の上端部よりも上方の部分に流入管が接続されており、かつ、前記空気芯筒延設部が二重管とされて伸縮自在とされている本発明1又は本発明2に記載の内面螺旋案内路付き管である。
【0010】
本願の請求項4に記載の発明(本発明4)は、前記縦管本体部の上端部に縦管本体部延設部が接続され、その縦管本体部延設部の前記螺旋案内路の上端部よりも上方の部分に流入管が接続されており、かつ、前記空気芯筒延設部の上端部が前記蓋体に対して高さ調整自在とされている本発明2に記載の内面螺旋案内路付き管である。
【0011】
本発明において、螺旋案内路を形成する材質としては、金属類をはじめ、プラスチックが挙げられる。
プラスチックとしては、熱可塑性樹脂では、ポリ塩化ビニルをはじめ、ポリエチレン、ポリプロピレン、メタクリル樹脂等が挙げられ、熱硬化性樹脂では、不飽和ポリエステル樹脂、ビニルエステル樹脂、エポキシ樹脂等が挙げられ、ガラス繊維等の無機繊維、炭素繊維、アラミド繊維、ビニロン繊維等の有機繊維にて強化したものとして使用することができる。
【0012】
螺旋案内路の各路の高さは、縦管の径の1/20〜5/12程度が好ましい。
螺旋案内路の肉厚は、口径によっても異なるが、通常、縦管の内径の1/20〜15/100程度が好ましい。
螺旋案内路の螺旋ピッチは、1〜10程度が好ましい。
【0013】
本発明において、縦管本体部、縦管本体部延設部、空気芯筒、空気芯筒延設部、遮蔽板を形成する材質としては、螺旋案内路を形成する材料と同様の材料が挙げられる。
【0014】
【作用】
本発明の内面螺旋案内路付き管は、前記縦管本体部又はその延設部の前記螺旋案内路の上端部よりも上方の部分に流入管が接続され、前記空気芯筒の上部に空気芯筒延設部が着脱自在に連結され、該空気芯筒延設部の側方に、前記螺旋案内路の上端部付近から前記流入管の管頂よりも上方に到るまでの、縦管本体部又はその延設部までの間を横断するように遮蔽板が立設されていることにより、流入管より縦管本体部又はその延設部内に流入する下水は、遮蔽板に遮られて、周方向に沿って一方向にのみ流動することになり、螺旋案内路の旋回方向に沿って円滑に流動するように案内されるとともに、遮蔽板に衝突することにより、一層減衰される。又、空気芯筒延設部の上端部が前記縦管本体部又はその延設部の上端部に係止されていることにより、流れ込む下水の流量が多い場合であっても、空気芯筒延長部及び遮蔽板が流出することがなく、流入管からの汚物等が縦管本体部延設部内に流れ込んで、空気芯筒延設部や遮蔽板の部分に滞留したときには、空気芯筒延設部を遮蔽板とともに取り外してメンテナンスを行うことができる。
【0015】
前記空気芯筒延設部の上端部が係止された前記縦管本体部又はその延設部の上端部が、取外し自在な蓋体とされていると、メテンテナンス時の、空気芯筒延設部及び遮蔽板の着脱がより容易となる。
【0016】
前記縦管本体部の上端部に縦管本体部延設部が接続され、その縦管本体部延設部の前記螺旋案内路の上端部よりも上方の部分に流入管が接続されており、かつ、前記空気芯筒延設部が二重管とされて伸縮自在とされていると、現場にて、下水管に対する流入管の高さが合致しない場合に、縦管本体部延設部を長めのものとしておいて、その下端部を切断することにより高さ調整を行い、その高さ調整分だけ空気芯筒延設部を伸縮して、空気芯筒延設部の上端部を空気芯筒延設部の上端部に係止するように施工することができる。
【0017】
前記縦管本体部の上端部に縦管本体部延設部が接続され、その縦管本体部延設部の前記螺旋案内路の上端部よりも上方の部分に流入管が接続されており、かつ、前記空気芯筒延設部の上端部が前記蓋体に対して高さ調整自在とされていると、現場にて、下水管に対する流入管の高さが合致しない場合に、縦管本体部延設部を長めのものとしておいて、その下端部を切断することにより高さ調整を行ない、その高さ調整分だけ、空気芯筒延設部の上端部を前記蓋体に対して高さ調整して、空気芯筒延設部の上端部を蓋体に係止するように施工することができる。
【0018】
【発明の実施の形態】
以下、本発明の実施の形態を、図面を参照して説明する。
図1は、本発明の内面螺旋案内路付き管の一例を示す断面図、図2はその要部を示す断面図、図3は図2におけるA−A線に沿う断面図である。
図1〜図3に示すように、内面螺旋案内路付き管は、縦管11と流入管接続部材12と空気芯筒延設部13とからなる。
【0019】
縦管11は、縦管本体部111と、空気芯筒113と、螺旋案内路112,112′とからなる。
縦管本体部111の上端には、受口114が設けられている。
縦管本体部111内の上部には、略中心部に、内部が中空とされた空気芯筒113が立設されている。
【0020】
縦管本体部111の内周面と、空気芯筒113の外周面との間に、第1の螺旋案内路112が配設されている。第1の螺旋案内路112の内周面は空気芯筒113の外周面に接着されている。第1の螺旋案内路112の外周面は縦管本体部111の内周面に接着されている。
【0021】
縦管本体部111の下端には、流出管115が接続されており、流出管115の管頂のやや上方の縦管本体部111の内部には、第2の螺旋案内路112′が配設されている。
第2の螺旋案内路112′の外周面は縦管本体部111の内周面に接着されている。第2の螺旋案内路112′には空気芯筒は取り付けられていない。
縦管本体部111の内部の第1の螺旋案内路112と第2の螺旋案内路112′間には、螺旋案内路は配設されていない。
【0022】
流入管接続部材12は、下水管2を縦管11の上部に接続するためのものであって、縦管11の上端の受口114に接続される縦管本体部延設部121と、その縦管本体部延設部121の中途に連結された流入管122とからなる。
【0023】
空気芯筒延設部13は、下端に、縦管11の空気芯筒113の上端に着脱自在に接続される受口131が形成されている。空気芯筒延設部13の側方には、上部螺旋案内路12の上端部付近から流入管122の管頂よりも上方に到るまでの、縦管本体部延設部121までの間を横断するように遮蔽板14が一体的に立設されている。
【0024】
空気芯筒延設部13の上端部は、縦管本体部延設部121の上端部に、ボルト15にて係止されている。
又、メンテナンスが必要なときには、ボルト15を除去することにより、空気芯筒延設部13を遮蔽板14とともに、縦管本体部延設部121の上方に取り外すことができるようになっている。
【0025】
以下、上記の内面螺旋案内路付き管の使用状態を同じ図1〜図3を参照して説明する。
下水管2よりマンホール内に進入する下水Mは、流入管122から、縦管本体部延設部121内に流入する。
このとき、遮蔽板14が第1の螺旋案内路112の上端部付近から流入管122の管頂よりも上方に到るまで立設されているので、下水Mは、遮蔽板14に遮られて、周方向に沿って一方向にのみ流動することになり、第1の螺旋案内路112の旋回方向に沿って円滑に流動するように案内される。又、下水Mは遮蔽板14に衝突することにより、一層減衰される。
【0026】
そして、下水Mは、第1の螺旋案内路112に沿って螺旋状に流下した後、螺旋状を維持流下し、第2の螺旋案内路112′に沿って螺旋状に流下する。下水は螺旋状に流下する間に減衰された状態となり、従って、流下する下水によってマンホールの底部に強い衝撃が加わるおそれがなく、流出管115からマンホールの流出口を経て暗渠配管に排出される。
【0027】
そして、流入管122からの汚物等が縦管本体部延設部121内に流れ込んで、空気芯筒延設部13や遮蔽板14の部分に滞留したときには、ボルト15を除去することにより、空気芯筒延設部13を遮蔽板14とともに、縦管本体部延設部121の上方に取り外して、メンテナンスを行う。
【0028】
図4は、本発明の内面螺旋案内路付き管の別の例の要部を示す一部断面図である。
この例の場合には、空気芯筒延設部13の上端部が係止された縦管本体部延設部の上端部が、取外し自在な蓋体123とされている。
蓋体123は、特に図示しないが、嵌合方式や係止方式等の適当て手段により縦管本体部延設部に固定される。
このような構成とすることにより、メンテナンス時に、蓋体123ごと、空気芯筒延設部13を遮蔽板14とともに、縦管本体部延設部121の上方に取り外すことができるので便利である。
【0029】
図5は、本発明の内面螺旋案内路付き管の更に別の例の要部を示す一部断面図である。
この例の場合には、空気芯筒延設部13が外筒部13aと内筒部13bの二重管とされていて、外管部13aに対して内筒部13bを留め具16にて所望の高さとなるように伸縮自在とされている。
この構成にすることにより、現場にて、下水管2に対する流入管122の高さが合致しない場合に、縦管本体部延設部121を長めのものとしておいて、その下端部を切断することにより高さ調整を行うが、その高さ調整に伴い、空気芯筒延設部13の上端部を空気芯筒延設部13の上端部に係止するのに必要となる。
【0030】
図6は、本発明の内面螺旋案内路付き管の更に別の例の要部を示す一部断面図である。
この例の場合には、空気芯筒延設部13の上端部が蓋体123に対して高さ調整自在とされている。
このような構成とすることにより、現場にて、下水管2に対する流入管122の高さが合致しない場合に、縦管本体部延設部121を長めのものとしておいて、その下端部を切断することにより高さ調整を行うが、その高さ調整に伴い、空気芯筒延設部13の上端部を蓋体123に係止するのに必要となる。
【0031】
【実施例】
以下、本発明を実施例により説明する。
実施例1
図1〜図3を参照して説明した、内面螺旋案内路付き管を作製した。
縦管11として、繊維強化樹脂モルタルからなり、肉厚12mm、内径500mmの縦管本体部111の上端に、肉厚12mm、内径524mmの受口が一体的に設けられ、縦管本体部111内の上部に、繊維強化樹脂被覆硬質ポリ塩化ビニルからなり、外径170mmの空気芯筒113が設けられ、その周囲に、繊維強化樹脂被覆硬質ポリ塩化ビニルからなり、肉厚10mm、外径500mm、内径170mmの上部螺旋案内路12が4ピッチ配置され、下部に、繊維強化樹脂被覆硬質ポリ塩化ビニルからなり、肉厚10mm、外径500mmの下部螺旋案内路12′が6ピッチ配設されているものを用いた。
【0032】
流入管接続部材12として、繊維強化樹脂被覆硬質ポリ塩化ビニルからなり、肉厚12mm、外径524mmの縦管本体延設部121の中途に、流入管122が連結されたものを用いた。
空気芯筒延設部13が繊維強化樹脂被覆硬質ポリ塩化ビニル製の外径170mmのものからなり、遮蔽板14が繊維強化樹脂製の肉厚10mmのものからなるものを用いた。
【0033】
この内面螺旋案内路付き管内に、下水管2より40L/sの流量の下水を流下させたところ、空気芯筒延設部13が振動したり、ずれたりすることなく、安定して運転することができた。
又、メンテナンス時には、ボルト15を除去することにより、空気芯筒延設部13を遮蔽板14とともに抜き去って、その中に入り、汚物等を簡単に除去することができた。
【0034】
実施例2
流入管接続部材12の縦管本体延設部121の上端部の150mmを、図4に示す蓋体123にしたことを以外は実施例1と同様にして、内面螺旋案内路付き管を作製した。
メンテナンス時には、ボルト15を除去することにより、蓋体123ごと、空気芯筒延設部13を遮蔽板14とともに、実施例1の1/3の時間にて抜き去っることができた。
【0035】
実施例3
図5に示すように、空気芯筒延設部13が外径170mmの外筒部13aと外径150mmの内筒部からなる二重管とされていて、外管部13aに対して内筒部13bを留め具16にて30mmピッチで所望の高さとなるように伸縮自在とされているものとしたこと以外は、実施例2と同様にして、内面螺旋案内路付き管を作製した。
【0036】
下水管2に対する流入管122の高さが60mm高かったので、縦管本体部延設部121の下端部を60mm切断することにより高さ調整を行った。その高さ調整に伴い、空気芯筒延設部13の上端部を2ピッチ分の60mm調整して、空気芯筒延設部13の上端部に係止した。
この現場での、調整作業を5分で行うことができた。
【0037】
【発明の効果】
本発明の内面螺旋案内路付き管は、上記のとおりにされているので、流入管から流れ込む流体を、騒音、臭気等の発生を抑制した状態で、ほぼ垂直な縦管本体部内に円滑に流下させることができ、かつ、メンテナンスが容易である。
【図面の簡単な説明】
【図1】本発明の内面螺旋案内路付き管の一例の組立て前の状態を示す一部断面図である。
【図2】図1に示すものの組立て後の要部を示す一部断面図である。面図である。
【図3】図2における、A─A線に沿う一部断面図である。
【図4】本発明の内面螺旋案内路付き管の別の例の一部を示す一部断面図である。
【図5】本発明の内面螺旋案内路付き管の更に別の例の一部を示す一部断面図である。
【図6】本発明の内面螺旋案内路付き管の更に別の例の一部を示す一部断面図である。
【符号の説明】
2 下水管
11 縦管
12 流入管接続部材
13 空気芯筒延設部
14 遮蔽板
111 縦管本体部
112,112′ 螺旋案内路
113 空気芯筒
121 縦管本体部延設部
122 流入管
123 蓋体
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a pipe with an inner surface spiral guide path suitable for use in a vertically flowing vertical sewer pipe.
[0002]
[Prior art]
In order to attenuate the sewage flowing into the manhole when the sewage flows into the manhole, for example, as described in Japanese Utility Model Publication No. 4-53842, a vertical sewage pipe (drop shaft) is provided in the manhole. A method of placement has been implemented. In the vertical sewage pipe, a pipe with a spiral guide path provided with a spiral guide path that guides the sewage to flow down in a spiral state is used inside a vertically arranged straight pipe body. . In addition, an air core cylinder is provided at the shaft core portion of the spiral guide path in order to eliminate upward the air contained in the sewage guided by the spiral guide path.
[0003]
In such a pipe with a spiral guide path, sewage flowing into the upper end of the pipe is attenuated while flowing down along the spiral guide path. Therefore, there is no possibility that the bottom of the manhole is subjected to a strong impact by the flowing down sewage, and wear of the manhole bottom is suppressed.
[0004]
[Problems to be solved by the invention]
The spiral guide path that guides the sewage flowing into the vertical pipe main body so as to flow spirally is usually provided below the sewage inflow portion in the pipe main body. Therefore, when sewage flows in from the upper end surface of the vertical pipe main body part by natural fall, there is a possibility that sewage collides with the spiral guide path and generates a large noise. In addition, odor may be generated when air is mixed into sewage flowing down naturally.
[0005]
Furthermore, there is a method of using a reducer with a reduced inner diameter when flowing down sewage into the vertical pipe body by natural flow, but in this case the flow rate of sewage flowing down the reducer is temporarily Therefore, there is a problem that the noise generated by the sewage flowing down into the vertical pipe main body collides with the spiral guide path is increased. In addition, since a vortex flow is generated in the reducer, if the direction of the vortex flow is formed in the direction opposite to the spiral flow of the sewage by the spiral guide passage, the sewage smoothly flows along the spiral guide passage in the vertical pipe body. It cannot flow down, and there is a risk of noise and odor.
[0006]
The present invention eliminates such conventional problems, and allows the fluid flowing from the inflow pipe to smoothly flow down into the substantially vertical vertical pipe body while suppressing the occurrence of noise, odor, etc. And it was made for the purpose of providing the pipe | tube with an internal spiral guideway with easy maintenance.
[0007]
[Means for Solving the Problems]
The invention according to claim 1 of the present application (present invention 1) is a pipe with an inner surface spiral guide path in which an air core cylinder and a spiral guide path are provided in a straight tubular vertical pipe body section, and the vertical pipe body section. Alternatively, an inflow pipe is connected to a portion of the extension portion above the upper end portion of the spiral guide path, and an air core tube extension portion is detachably connected to an upper portion of the air core tube. A shielding plate that crosses between the vertical pipe main body part or its extension part from the vicinity of the upper end part of the spiral guide path to the upper side of the top of the inflow pipe to the side of the installation part. Is a tube with an inner surface spiral guide path in which the upper end portion of the air core tube extending portion is locked to the vertical tube main body portion or the upper end portion of the extending portion.
[0008]
The invention according to claim 2 of the present application (invention 2) is such that the vertical tube main body portion in which the upper end portion of the air core tube extending portion is locked or the upper end portion of the extending portion is a removable lid. It is a pipe | tube with an internal spiral guideway of this invention 1 made into the body.
[0009]
In the invention according to claim 3 of the present application (invention 3), a vertical tube main body extension portion is connected to an upper end portion of the vertical pipe main body portion, and the spiral guide path of the vertical pipe main body extension portion is provided. The inner spiral according to the first or second aspect of the present invention, wherein an inflow pipe is connected to a portion above the upper end portion, and the air core tube extending portion is a double pipe that can be expanded and contracted. It is a pipe with a guideway.
[0010]
In the invention according to claim 4 of the present application (invention 4), a vertical tube main body extension portion is connected to an upper end portion of the vertical pipe main body portion, and the spiral guide path of the vertical pipe main body extension portion is provided. The inner surface according to the second aspect, wherein an inflow pipe is connected to a portion above the upper end portion, and the upper end portion of the air core tube extending portion is adjustable in height with respect to the lid body. It is a tube with a spiral guideway.
[0011]
In the present invention, examples of the material for forming the spiral guide path include metals and plastics.
Examples of plastics include thermoplastic resins such as polyvinyl chloride, polyethylene, polypropylene, and methacrylic resins. Thermosetting resins include unsaturated polyester resins, vinyl ester resins, and epoxy resins. Can be used as those reinforced with organic fibers such as inorganic fibers such as carbon fibers, aramid fibers, and vinylon fibers.
[0012]
The height of each path of the spiral guide path is preferably about 1/20 to 5/12 of the diameter of the vertical pipe.
Although the thickness of the spiral guide path varies depending on the diameter, it is usually preferably about 1/20 to 15/100 of the inner diameter of the vertical pipe.
The spiral pitch of the spiral guide path is preferably about 1 to 10.
[0013]
In the present invention, the material forming the vertical tube main body portion, the vertical tube main body portion extending portion, the air core tube, the air core tube extending portion, and the shielding plate is the same material as the material forming the spiral guide path. It is done.
[0014]
[Action]
In the pipe with an inner surface spiral guide path of the present invention, an inflow pipe is connected to a portion of the vertical pipe main body part or its extension part above the upper end part of the spiral guide path, and an air core is provided above the air core cylinder. A vertical tube body in which the tube extending portion is detachably connected, and extends from the vicinity of the upper end portion of the spiral guide path to the upper side of the top of the inflow tube to the side of the air core tube extending portion. Sewage flowing from the inflow pipe into the longitudinal pipe main body part or the extension part is blocked by the shield plate, by the shielding plate being erected so as to cross between the part and the extension part. The fluid flows only in one direction along the circumferential direction, is guided so as to smoothly flow along the turning direction of the spiral guide path, and is further attenuated by colliding with the shielding plate. Further, since the upper end portion of the air core tube extending portion is locked to the vertical pipe main body portion or the upper end portion of the vertical tube main body portion, the air core tube extension can be achieved even when the amount of sewage flowing in is large. If the filth from the inflow pipe flows into the extension part of the vertical pipe body and stays in the part of the air core cylinder extension or shield plate, the air core cylinder extension will not occur. The part can be removed together with the shielding plate for maintenance.
[0015]
If the upper end of the vertical tube main body portion or the extended portion of which the upper end portion of the air core tube extending portion is locked is a detachable lid, the air core tube extension at the time of maintenance is used. The installation part and the shielding plate can be easily attached and detached.
[0016]
A vertical pipe main body part extending part is connected to the upper end part of the vertical pipe main body part, and an inflow pipe is connected to a portion above the upper end part of the spiral guide path of the vertical pipe main body part extending part, And if the air core tube extension part is a double pipe and can be expanded and contracted, if the height of the inflow pipe with respect to the sewer pipe does not match at the site, the vertical pipe body part extension part is Adjust the height by cutting the lower end of the long one, expand and contract the air core tube extension by the height adjustment, and adjust the upper end of the air core tube extension to the air core. It can construct so that it may latch on the upper end part of a cylinder extension part.
[0017]
A vertical pipe main body part extending part is connected to the upper end part of the vertical pipe main body part, and an inflow pipe is connected to a portion above the upper end part of the spiral guide path of the vertical pipe main body part extending part, In addition, if the upper end of the air core tube extending portion is adjustable in height with respect to the lid body, the vertical pipe body when the height of the inflow pipe with respect to the sewer pipe does not match at the site Adjust the height by cutting the lower part of the part extending part, and adjust the height of the upper part of the air core cylinder extension part relative to the lid by the height adjustment. It can adjust and adjust so that the upper end part of an air core cylinder extension part may be locked to a cover body.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a cross-sectional view showing an example of a tube with an inner surface spiral guide path according to the present invention, FIG. 2 is a cross-sectional view showing an essential part thereof, and FIG. 3 is a cross-sectional view taken along line AA in FIG.
As shown in FIGS. 1 to 3, the pipe with an inner surface spiral guide path includes a vertical pipe 11, an inflow pipe connecting member 12, and an air core tube extending portion 13.
[0019]
The vertical tube 11 includes a vertical tube main body 111, an air core tube 113, and spiral guide paths 112 and 112 '.
A receiving port 114 is provided at the upper end of the vertical tube main body 111.
At the upper part in the vertical tube main body 111, an air core cylinder 113 having a hollow inside is erected substantially at the center.
[0020]
A first spiral guide path 112 is disposed between the inner peripheral surface of the vertical tube main body 111 and the outer peripheral surface of the air core cylinder 113. The inner peripheral surface of the first spiral guide path 112 is bonded to the outer peripheral surface of the air core tube 113. The outer peripheral surface of the first spiral guide path 112 is bonded to the inner peripheral surface of the vertical tube main body 111.
[0021]
An outflow pipe 115 is connected to the lower end of the vertical pipe main body 111, and a second spiral guide path 112 ′ is disposed inside the vertical pipe main body 111 slightly above the top of the outflow pipe 115. Has been.
The outer peripheral surface of the second spiral guide path 112 ′ is bonded to the inner peripheral surface of the vertical tube main body 111. No air core cylinder is attached to the second spiral guide path 112 '.
No spiral guide path is provided between the first spiral guide path 112 and the second spiral guide path 112 ′ inside the vertical tube main body 111.
[0022]
The inflow pipe connecting member 12 is for connecting the sewage pipe 2 to the upper part of the vertical pipe 11, and includes a vertical pipe main body extending portion 121 connected to the receiving port 114 at the upper end of the vertical pipe 11, It consists of an inflow pipe 122 connected in the middle of the vertical pipe body extension part 121.
[0023]
The air core tube extending portion 13 has a receiving port 131 that is detachably connected to the upper end of the air core tube 113 of the vertical tube 11 at the lower end. On the side of the air core tube extending portion 13, there is a space from the vicinity of the upper end portion of the upper spiral guide path 12 to the upper portion of the inflow tube 122 to the vertical tube main body extending portion 121. A shielding plate 14 is erected integrally so as to cross.
[0024]
The upper end portion of the air core tube extending portion 13 is locked by the bolt 15 to the upper end portion of the vertical tube main body extending portion 121.
Further, when maintenance is required, the air core tube extending portion 13 can be removed together with the shielding plate 14 and above the vertical tube main body extending portion 121 by removing the bolt 15.
[0025]
Hereinafter, the use state of said pipe | tube with an internal spiral guideway is demonstrated with reference to the same FIGS. 1-3.
The sewage M entering the manhole from the sewage pipe 2 flows from the inflow pipe 122 into the vertical pipe main body extension portion 121.
At this time, since the shielding plate 14 is erected from the vicinity of the upper end portion of the first spiral guide path 112 to the upper side of the top of the inflow pipe 122, the sewage M is blocked by the shielding plate 14. The fluid flows only in one direction along the circumferential direction, and is guided so as to smoothly flow along the turning direction of the first spiral guide path 112. Further, the sewage M is further attenuated by colliding with the shielding plate 14.
[0026]
The sewage M flows down spirally along the first spiral guide path 112, then flows down in a spiral manner, and flows down spirally along the second spiral guide path 112 ′. The sewage is attenuated while flowing down in a spiral manner, and therefore, there is no fear that a strong impact is applied to the bottom of the manhole by the flowing down sewage, and the sewage is discharged from the outflow pipe 115 to the underdrain pipe through the outlet of the manhole.
[0027]
And when the filth etc. from the inflow pipe 122 flows into the vertical pipe main body extension part 121 and stays in the air core cylinder extension part 13 or the shielding plate 14, the bolt 15 is removed to remove air. Maintenance is performed by removing the core tube extending portion 13 together with the shielding plate 14 above the vertical tube main body extending portion 121.
[0028]
FIG. 4 is a partial cross-sectional view showing a main part of another example of the tube with an inner spiral guide path of the present invention.
In the case of this example, the upper end portion of the vertical tube main body extending portion to which the upper end portion of the air core tube extending portion 13 is locked is a detachable lid 123.
Although not specifically shown, the lid 123 is fixed to the longitudinal tube main body extending portion by an appropriate means such as a fitting method or a locking method.
Such a configuration is convenient because the air core tube extending portion 13 together with the shielding plate 14 can be removed above the vertical tube main body extending portion 121 together with the cover 123 during maintenance.
[0029]
FIG. 5 is a partial cross-sectional view showing a main part of still another example of the pipe with an inner spiral guide path of the present invention.
In the case of this example, the air core tube extending portion 13 is a double tube of the outer tube portion 13a and the inner tube portion 13b, and the inner tube portion 13b is attached to the outer tube portion 13a by the fastener 16. It can be expanded and contracted to a desired height.
With this configuration, when the height of the inflow pipe 122 with respect to the sewage pipe 2 does not match with the sewer pipe 2 on the site, the longitudinal main body part extension part 121 is made longer and the lower end part is cut. However, it is necessary to lock the upper end portion of the air core tube extending portion 13 to the upper end portion of the air core tube extending portion 13 in accordance with the height adjustment.
[0030]
FIG. 6 is a partial cross-sectional view showing a main part of still another example of the pipe with an inner spiral guide path of the present invention.
In the case of this example, the height of the upper end portion of the air core tube extending portion 13 is adjustable with respect to the lid 123.
By adopting such a configuration, when the height of the inflow pipe 122 with respect to the sewer pipe 2 does not match with the sewer pipe 2 at the site, the longitudinal main body part extension part 121 is made longer and the lower end part is cut. The height adjustment is performed by doing this, and it is necessary to lock the upper end portion of the air core tube extending portion 13 to the lid body 123 in accordance with the height adjustment.
[0031]
【Example】
Hereinafter, the present invention will be described with reference to examples.
Example 1
A tube with an inner surface spiral guideway described with reference to FIGS. 1 to 3 was produced.
The vertical tube 11 is made of fiber reinforced resin mortar, and a receiving port having a thickness of 12 mm and an inner diameter of 524 mm is integrally provided at the upper end of the vertical tube main body 111 having a thickness of 12 mm and an inner diameter of 500 mm. An air core tube 113 having an outer diameter of 170 mm is provided on the top of the air core tube 113 having an outer diameter of 170 mm, and is formed of a fiber reinforced resin-coated hard polyvinyl chloride, and has a wall thickness of 10 mm, an outer diameter of 500 mm, The upper spiral guide path 12 having an inner diameter of 170 mm is arranged in 4 pitches, and the lower part is made of fiber-reinforced resin-coated hard polyvinyl chloride, and the lower spiral guide path 12 ′ having a wall thickness of 10 mm and an outer diameter of 500 mm is arranged in 6 pitches. A thing was used.
[0032]
The inflow pipe connecting member 12 is made of fiber reinforced resin-coated hard polyvinyl chloride, and has a longitudinal pipe body extending portion 121 having a thickness of 12 mm and an outer diameter of 524 mm, and an inflow pipe 122 connected thereto.
The air core tube extending portion 13 is made of fiber reinforced resin-coated hard polyvinyl chloride having an outer diameter of 170 mm, and the shielding plate 14 is made of fiber reinforced resin and having a thickness of 10 mm.
[0033]
When sewage with a flow rate of 40 L / s is caused to flow down from the sewer pipe 2 into the pipe with the inner surface spiral guide path, the air core tube extending portion 13 does not vibrate or shift so that it can operate stably. I was able to.
Further, at the time of maintenance, by removing the bolt 15, the air core tube extending portion 13 was removed together with the shielding plate 14 and entered therein, and filth and the like could be easily removed.
[0034]
Example 2
A tube with an internal spiral guideway was produced in the same manner as in Example 1 except that 150 mm at the upper end portion of the vertical tube main body extending portion 121 of the inflow tube connecting member 12 was changed to the lid 123 shown in FIG. .
At the time of maintenance, the bolt 15 was removed, so that the air core tube extending portion 13 together with the cover body 123 could be removed together with the shielding plate 14 in 1/3 of the time of the first embodiment.
[0035]
Example 3
As shown in FIG. 5, the air core tube extending portion 13 is a double tube composed of an outer tube portion 13a having an outer diameter of 170 mm and an inner tube portion having an outer diameter of 150 mm. A tube with an internal spiral guideway was produced in the same manner as in Example 2 except that the portion 13b was made to be stretchable by the fastener 16 so as to have a desired height at a pitch of 30 mm.
[0036]
Since the height of the inflow pipe 122 relative to the sewage pipe 2 was 60 mm higher, the height was adjusted by cutting the lower end portion of the vertical pipe body extension portion 121 by 60 mm. Along with the height adjustment, the upper end portion of the air core tube extending portion 13 was adjusted by 60 mm for two pitches and locked to the upper end portion of the air core tube extending portion 13.
The adjustment work at this site could be done in 5 minutes.
[0037]
【The invention's effect】
Since the pipe with the inner surface spiral guide path of the present invention is configured as described above, the fluid flowing from the inflow pipe smoothly flows into the substantially vertical vertical pipe body while suppressing the generation of noise, odor, and the like. And can be easily maintained.
[Brief description of the drawings]
FIG. 1 is a partial cross-sectional view showing a state before assembling of an example of a pipe with an inner spiral guide path of the present invention.
2 is a partial cross-sectional view showing a main part after assembling of what is shown in FIG. 1; FIG.
FIG. 3 is a partial cross-sectional view taken along the line AA in FIG.
FIG. 4 is a partial cross-sectional view showing a part of another example of a tube with an inner surface spiral guide path of the present invention.
FIG. 5 is a partial cross-sectional view showing a part of still another example of a tube with an inner surface spiral guide path of the present invention.
FIG. 6 is a partial cross-sectional view showing a part of still another example of the tube with the inner surface spiral guide path of the present invention.
[Explanation of symbols]
2 Sewage pipe 11 Vertical pipe 12 Inflow pipe connecting member 13 Air core tube extending part 14 Shield plate 111 Vertical pipe main body parts 112, 112 'Spiral guide path 113 Air core cylinder 121 Vertical pipe main body part extending part 122 Inflow pipe 123 Lid body

Claims (4)

直管状の縦管本体部内に空気芯筒と螺旋案内路が設けられた内面螺旋案内路付き管であって、前記縦管本体部又はその延設部の前記螺旋案内路の上端部よりも上方の部分に流入管が接続され、前記空気芯筒の上部に空気芯筒延設部が着脱自在に連結され、該空気芯筒延設部の側方に、前記螺旋案内路の上端部付近から前記流入管の管頂よりも上方に到るまでの、縦管本体部又はその延設部までの間を横断するように遮蔽板が立設され、該空気芯筒延設部の上端部が前記縦管本体部又はその延設部の上端部に係止されていることを特徴とする内面螺旋案内路付き管。A pipe with an inner surface spiral guide path in which an air core cylinder and a spiral guide path are provided in a straight tubular vertical pipe main body part, above the upper end part of the spiral guide path of the vertical pipe body part or its extension part An inflow pipe is connected to the portion, and an air core tube extending portion is detachably connected to an upper portion of the air core tube. A shielding plate is erected so as to cross between the vertical pipe main body part or its extension part up to the top of the pipe top of the inflow pipe, and the upper end part of the air core cylinder extension part is A tube with an inner surface spiral guide path, which is locked to an upper end portion of the vertical tube main body portion or an extending portion thereof. 前記空気芯筒延設部の上端部が係止された前記縦管本体部又はその延設部の上端部が、取外し自在な蓋体とされていることを特徴とする請求項1に記載の内面螺旋案内路付き管。2. The vertical tube main body portion in which the upper end portion of the air core tube extending portion is locked or the upper end portion of the extending portion is a detachable lid. Tube with internal spiral guideway. 前記縦管本体部の上端部に縦管本体部延設部が接続され、その縦管本体部延設部の前記螺旋案内路の上端部よりも上方の部分に流入管が接続されており、かつ、前記空気芯筒延設部が二重管とされて伸縮自在とされていることを特徴とする請求項1又は請求項2に記載の内面螺旋案内路付き管。A vertical pipe main body part extending part is connected to the upper end part of the vertical pipe main body part, and an inflow pipe is connected to a portion above the upper end part of the spiral guide path of the vertical pipe main body part extending part, The tube with an inner surface spiral guide path according to claim 1 or 2, wherein the air core tube extending portion is a double tube and can be expanded and contracted. 前記縦管本体部の上端部に縦管本体部延設部が接続され、その縦管本体部延設部の前記螺旋案内路の上端部よりも上方の部分に流入管が接続されており、かつ、前記空気芯筒延設部の上端部が前記蓋体に対して高さ調整自在とされていることを特徴とする請求項2に記載の内面螺旋案内路付き管。A vertical pipe main body part extending part is connected to the upper end part of the vertical pipe main body part, and an inflow pipe is connected to a portion above the upper end part of the spiral guide path of the vertical pipe main body part extending part, The pipe with an inner surface spiral guide path according to claim 2, wherein an upper end portion of the air core tube extending portion is height-adjustable with respect to the lid body.
JP05229498A 1998-03-04 1998-03-04 Tube with internal spiral guideway Expired - Lifetime JP4140933B2 (en)

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Application Number Priority Date Filing Date Title
JP05229498A JP4140933B2 (en) 1998-03-04 1998-03-04 Tube with internal spiral guideway

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JP4140933B2 true JP4140933B2 (en) 2008-08-27

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7978654B2 (en) 2006-06-01 2011-07-12 Sharp Kabushiki Kaisha Method for connecting mobile station to base station, mobile station, base station, multi-carrier mobile communication system, and random access channel mapping method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7978654B2 (en) 2006-06-01 2011-07-12 Sharp Kabushiki Kaisha Method for connecting mobile station to base station, mobile station, base station, multi-carrier mobile communication system, and random access channel mapping method

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