JP2685350B2 - Drainage basin - Google Patents
Drainage basinInfo
- Publication number
- JP2685350B2 JP2685350B2 JP2290136A JP29013690A JP2685350B2 JP 2685350 B2 JP2685350 B2 JP 2685350B2 JP 2290136 A JP2290136 A JP 2290136A JP 29013690 A JP29013690 A JP 29013690A JP 2685350 B2 JP2685350 B2 JP 2685350B2
- Authority
- JP
- Japan
- Prior art keywords
- cleaning port
- drainage
- inflow
- peripheral surface
- main body
- 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
- Branch Pipes, Bends, And The Like (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 この発明は排水桝に関し、特にたとえば下水道配管等
に用いられる、排水桝に関する。TECHNICAL FIELD The present invention relates to a drainage basin, and more particularly to a drainage basin used in, for example, sewer piping.
この種の従来の排水桝の一例が、特願平２−131497号
において開示されている。この従来の排水桝１は、第３
図に示すように、それぞれが流出管２の軸線に対して45
゜の角度で交わる軸線を有する流入管3aおよび3bを備
え、流入管3aおよび3bのそれぞれには、受口管4aおよび
4bが回動可能に接合されている。An example of this type of conventional drainage basin is disclosed in Japanese Patent Application No. 2-131497. This conventional drainage basin 1
As shown in the figure, each is 45 with respect to the axis of the outflow pipe 2.
Inflow pipes 3a and 3b having axes intersecting at an angle of ° are provided, and each of the inflow pipes 3a and 3b has a receiving pipe 4a and
4b is rotatably joined.
そして、この排水桝１では、掃除口５の内径Ｄが206m
mの場合、流入管3aおよび3bのそれぞれの軸線が交わる
点Ｐと掃除口５の中心軸Ｏとの距離Ｌが45mmであること
が標準とされていた。And in this drainage basin 1, the inner diameter D of the cleaning port 5 is 206 m.
In the case of m, the standard is that the distance L between the point P where the respective axes of the inflow pipes 3a and 3b intersect and the central axis O of the cleaning port 5 is 45 mm.
従来の排水桝１では、距離Ｌが短いため、流入管3aか
ら点Ｐの直下を通って流入管3bに至る距離が短かかっ
た。そのため、排水桝１を流れる排水の流量が多くなる
と、流入管3aおよび3bの相互間で排水が越流するという
問題点があった。In the conventional drainage basin 1, since the distance L is short, the distance from the inflow pipe 3a to the inflow pipe 3b through directly below the point P is short. Therefore, when the flow rate of the drainage flowing through the drainage basin 1 increases, the drainage overflows between the inflow pipes 3a and 3b.
それゆえに、この発明の主たる目的は、排水が越流し
ない、排水桝を提供することである。Therefore, the main object of the present invention is to provide a drainage basin in which drainage does not overflow.
この発明は、本体、本体の上部に形成される掃除口、
本体の側面に形成される流出管、およびそれぞれが本体
の側面に形成されるかつそれぞれの軸線が流出管の軸線
に対して45゜の角度で交わる２つの流入管を備える排水
桝において、２つの流入管のそれぞれの内周面と流出管
の内周面とが、流出管の内周面と掃除口の内周面とが交
わる位置またはその位置より上流側で交わり、２つの流
入管のそれぞれの軸線が交わる点と掃除口の中心軸との
距離をＬとし、掃除口の内径をＤとしたとき、L/D≧0.3
が成立する、排水桝である。This invention includes a main body, a cleaning port formed on the top of the main body,
In the drainage basin, which is provided with an outflow pipe formed on a side surface of the main body and two inflow pipes each formed on a side surface of the main body and each axis of which intersects the axis of the outflow pipe at an angle of 45 °, The inner peripheral surface of the inflow pipe and the inner peripheral surface of the outflow pipe intersect at the position where the inner peripheral surface of the outflow pipe intersects with the inner peripheral surface of the cleaning port or at the upstream side of that position, and each of the two inflow pipes When the distance between the intersection of the axes of and the central axis of the cleaning port is L and the inner diameter of the cleaning port is D, L / D ≧ 0.3
Is a drainage basin.
２つの流入管のそれぞれの軸線が交わる点Ｐと掃除口
の中心軸Ｏとの距離Ｌと、掃除口の内径Ｄとが、L/D≧
0.3の関係を満たすように設定されるので、一方の流入
管から２つの流入管のそれぞれの軸線が交わる点の直下
を通って他方の流入管へ至る越流経路が長くなる。した
がって、一方の流入管から他方の流入管へ至るまでの間
に排水の勢いが減衰され得る。The distance L between the point P where the axes of the two inflow pipes intersect and the central axis O of the cleaning port and the inner diameter D of the cleaning port are L / D ≧
Since it is set to satisfy the relationship of 0.3, the overflow path from one inflow pipe to the other inflow pipe is extended just below the point where the axes of the two inflow pipes intersect. Therefore, the momentum of the drainage can be attenuated from one inflow pipe to the other inflow pipe.
この発明によれば、２つの流入管相互間で排水が越流
するのを防止できる。According to the present invention, it is possible to prevent the drainage from overflowing between the two inflow pipes.
この発明の上述の目的，その他の目的，特徴および利
点は、図面を参照して行う以下の実施例の詳細な説明か
ら一層明らかとなろう。The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description of embodiments with reference to the drawings.
第1A図〜第1C図を参照して、この発明の一実施例の排
水桝10は、たとえば塩化ビニルなどの合成樹脂からなる
本体12を含む。本体12の上部には、掃除口14が形成さ
れ、本体12の左右側面には流出管16および流入管18が形
成される。掃除口14,流出管16および流入管18のそれぞ
れには、図示しないパイプの管端を受容する受口20,22
および24が形成される。Referring to FIGS. 1A to 1C, drainage basin 10 of one embodiment of the present invention includes a main body 12 made of a synthetic resin such as vinyl chloride. A cleaning port 14 is formed in the upper portion of the main body 12, and an outflow pipe 16 and an inflow pipe 18 are formed on the left and right side surfaces of the main body 12. Each of the cleaning port 14, the outflow pipe 16, and the inflow pipe 18 has a receiving port 20, 22 for receiving a pipe end of a pipe (not shown).
And 24 are formed.
また、本体12の前後側面には、それぞれの軸線26aお
よび26bが流出管16の軸線28に対して45゜の角度で交わ
るように流入管30aおよび30bが形成される。これらの流
入管30aおよび30bの内周面と流出管16の内周面とが交わ
る位置ａは、流出管16の内周面と掃除口14の内周面とが
交わる位置ｂと同じ位置かあるいはその位置より上流側
に位置決めされる。したがって、流入管30aおよび30bは
それぞれの開口面積（流路断面積）が縮小されることな
く、そのまま掃除口14の側面に接続される。Further, inflow pipes 30a and 30b are formed on the front and rear side surfaces of the main body 12 so that the respective axis lines 26a and 26b intersect the axis line 28 of the outflow pipe 16 at an angle of 45 °. The position a at which the inner peripheral surfaces of the inflow pipes 30a and 30b and the inner peripheral surface of the outflow pipe 16 intersect is the same as the position b at which the inner peripheral surface of the outflow pipe 16 and the inner peripheral surface of the cleaning port 14 intersect. Alternatively, it is positioned upstream from that position. Therefore, the inflow pipes 30a and 30b are directly connected to the side surface of the cleaning port 14 without reducing their opening areas (flow passage cross-sectional areas).
そして、流入管30aおよび30bには、継手部32aおよび3
2bを介して、拡径受口34aおよび34bを備える受口管36a
および36bが回動可能に接合される。継手部32aおよび32
bにおける流入管30aおよび30bと受口管36aおよび36bと
の接合面38aおよび38bは、流出管16の軸線28に対して2
2.5゜の角度で傾斜するように形成される。Then, the inflow pipes 30a and 30b are connected to the joint portions 32a and 3a.
2b through the mouthpiece pipe 36a with the enlarged diameter receptacles 34a and 34b
And 36b are rotatably joined. Fittings 32a and 32
The joint surfaces 38a and 38b of the inflow pipes 30a and 30b and the receiving pipes 36a and 36b in b are 2 with respect to the axis 28 of the outflow pipe 16.
It is formed to incline at an angle of 2.5 °.
継手部32aは、第２図からよくわかるように、流入管3
0aの端部外周面に２段階に拡径される鍔40を含み、段部
42にはシールリング44が装着される。そして、この鍔40
の外側には、受口管36aの端部に形成された嵌合部46が
嵌合される。この嵌合部46の端部内周面には、鍔40の最
大外径よりも小さい内径を有する環状突部48が形成され
る。したがって、接合時には、嵌合部46が加熱軟化さ
れ、環状突部48が鍔40を乗り越えるように強制的に嵌合
される。なお、継手部32bは、継手部32aと同様に構成さ
れるので、その説明は省略する。As can be seen from FIG. 2, the joint portion 32a is provided with the inflow pipe 3
The outer peripheral surface of the end portion of 0a includes a collar 40 whose diameter is expanded in two steps.
A seal ring 44 is attached to 42. And this Tsuba 40
A fitting portion 46 formed at the end of the receiving pipe 36a is fitted to the outer side of the. An annular protrusion 48 having an inner diameter smaller than the maximum outer diameter of the collar 40 is formed on the inner peripheral surface of the end of the fitting portion 46. Therefore, at the time of joining, the fitting portion 46 is heated and softened, and the annular projection 48 is forcibly fitted so as to get over the collar 40. The joint portion 32b has the same structure as the joint portion 32a, and therefore its description is omitted.
継手部32aおよび32bにおいて受口管36aおよび36bを回
動すると、受口管36aおよび36bの分岐角度を45゜〜90゜
の間で変更することができ、第1A図に示す水平面内にお
いては、45゜分岐あるいは90゜分岐のいずれか一方を選
択することができる。By rotating the receiving pipes 36a and 36b in the joint portions 32a and 32b, the branch angle of the receiving pipes 36a and 36b can be changed between 45 ° and 90 °, and in the horizontal plane shown in FIG. 1A. , 45 ° branch or 90 ° branch can be selected.
そして、この排水桝10では、一方の流入管30a（また
は30b）から軸線26aおよび26bが交わる点Ｐの直下を通
って他方の流入管30b（または30a）へ至る越流経路が比
較的長く設定される。したがって、この長い越流経路を
流れる過程で排水の勢いが減衰され、流入管30aおよび3
0b間での排水の越流が防止され得る。Then, in this drainage basin 10, the overflow path from one of the inflow pipes 30a (or 30b) to the other of the inflow pipes 30b (or 30a) immediately below the point P where the axes 26a and 26b intersect is set to be relatively long. To be done. Therefore, the momentum of the drainage is attenuated in the process of flowing through this long overflow path, and the inflow pipes 30a and 3
Overflow of drainage between 0b can be prevented.
上述したように、位置ａが、位置ｂと同じ位置かある
いはそれより上流側に位置決めされることを前提にする
と、越流経路の長さは、点Ｐと掃除口14の中心軸Ｏとの
距離Ｌが長くなるほど長くなる。一方、距離Ｌが越流を
防止し得る程度に長いか否かの判断は、掃除口14の内径
Ｄに対して相対的に行なわれなければならない。As described above, on the assumption that the position a is positioned at the same position as the position b or at the upstream side thereof, the length of the overflow path is defined by the point P and the central axis O of the cleaning port 14. The longer the distance L, the longer the distance. On the other hand, the determination as to whether or not the distance L is long enough to prevent overflow must be made relative to the inner diameter D of the cleaning port 14.
そこで、発明者等は、掃除口14の内径Ｄを206mmに設
定し、距離Ｌと流入管30aおよび30bを流れる排水の流量
とを変化させて、排水の越流の有無を調べ、その結果を
別表にまとめた。Therefore, the inventors set the inner diameter D of the cleaning port 14 to 206 mm, change the distance L and the flow rate of the drainage flowing through the inflow pipes 30a and 30b, and check the presence or absence of overflow of the drainage. It is summarized in the attached table.
まず、距離Ｌが45mm（従来の排水桝）のときには、排
水の流量を50/min以上にしたとき、越流が生じた。ま
た、距離Ｌが55mmのときには、排水の流量を100/min
（生活排水の最大流量）にしたとき、越流が生じた。そ
して、距離Ｌが65mmのときには、排水の流量を100/mi
nにしても排水の越流は生じなかった。First, when the distance L was 45 mm (conventional drainage basin), overflow occurred when the flow rate of drainage was set to 50 / min or more. When the distance L is 55 mm, the drainage flow rate is 100 / min.
When set to (maximum discharge of domestic wastewater), overflow occurred. When the distance L is 65 mm, the drainage flow rate is 100 / mi.
Even with n, overflow of drainage did not occur.
この実験より、一般家庭レベルでは、L/D≧0.3を満た
すように排水桝10を設計したとき、排水の越流が生じな
いことがわかった。From this experiment, it was found that when the drainage basin 10 was designed so as to satisfy L / D ≧ 0.3, the overflow of drainage did not occur at the level of general households.
【図面の簡単な説明】 第1A図〜第1C図はこの発明の一実施例を示す図解図であ
り、第1A図は一部断面平面図、第1B図は正面断面図、第
1C図は側面半断面図である。 第２図は継手部の拡大図である。 第３図は従来技術を示す平面図解図である。 図において、10は排水桝、12は本体、14は掃除口、16は
流出管、26a,26b,28は軸線、30a,30bは流入管、ａは流
入管の内周面と流出管の内周面とが交わる位置、ｂは流
出管の内周面と掃除口の内周面とが交わる位置を示す。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1A to FIG. 1C are schematic views showing an embodiment of the present invention, FIG. 1A is a partial sectional plan view, FIG. 1B is a front sectional view,
FIG. 1C is a side half sectional view. FIG. 2 is an enlarged view of the joint portion. FIG. 3 is a plan view showing a conventional technique. In the figure, 10 is a drainage basin, 12 is a main body, 14 is a cleaning port, 16 is an outflow pipe, 26a, 26b and 28 are axis lines, 30a and 30b are inflow pipes, a is the inner peripheral surface of the inflow pipe and the outflow pipe. The position where the peripheral surface intersects, b is the position where the inner peripheral surface of the outflow pipe and the inner peripheral surface of the cleaning port intersect.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 武井 秀樹 大阪府堺市石津北町64番地 株式会社ク ボタビニルパイプ工場内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Hideki Takei Inventor Hideki Takei 64 Ishizukita-machi, Sakai City, Osaka Prefecture Kubota Vinyl Pipe Co., Ltd.
Claims (1)
口、前記本体の側面に形成される流出管、およびそれぞ
れが前記本体の側面に形成されるかつそれぞれの軸線が
前記流出管の軸線に対して45゜の角度で交わる２つの流
入管を備える排水桝において、 前記２つの流入管のそれぞれの内周面と前記流出管の内
周面とが、前記流出管の内周面と前記掃除口の内周面と
が交わる位置またはその位置より上流側で交わり、 前記２つの流入管のそれぞれの軸線が交わる点と前記掃
除口の中心軸との距離をＬとし、前記掃除口の内径をＤ
としたとき、L/D≧0.3が成立する、排水桝。1. A main body, a cleaning opening formed on an upper portion of the main body, an outflow pipe formed on a side surface of the main body, and an axis line of each of the outflow pipes formed on a side surface of the main body. In a drainage basin comprising two inflow pipes intersecting each other at an angle of 45 ° with respect to each other, an inner peripheral surface of each of the two inflow pipes and an inner peripheral surface of the outflow pipe are An inner diameter of the cleaning port, where L is a distance between a point where the inner peripheral surface of the cleaning port intersects or an upstream side of the position, and a point where the axes of the two inflow pipes intersect with the central axis of the cleaning port. To D
The drainage basin that satisfies L / D ≧ 0.3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2290136A JP2685350B2 (en) | 1990-10-26 | 1990-10-26 | Drainage basin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2290136A JP2685350B2 (en) | 1990-10-26 | 1990-10-26 | Drainage basin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04165196A JPH04165196A (en) | 1992-06-10 |
| JP2685350B2 true JP2685350B2 (en) | 1997-12-03 |
Family
ID=17752260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2290136A Expired - Fee Related JP2685350B2 (en) | 1990-10-26 | 1990-10-26 | Drainage basin |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2685350B2 (en) |
-
1990
- 1990-10-26 JP JP2290136A patent/JP2685350B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04165196A (en) | 1992-06-10 |
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