JPH1193232A - Waste water collecting pipe joint and sublimation pattern to manufacture this pipe joint - Google Patents
Waste water collecting pipe joint and sublimation pattern to manufacture this pipe jointInfo
- Publication number
- JPH1193232A JPH1193232A JP9255425A JP25542597A JPH1193232A JP H1193232 A JPH1193232 A JP H1193232A JP 9255425 A JP9255425 A JP 9255425A JP 25542597 A JP25542597 A JP 25542597A JP H1193232 A JPH1193232 A JP H1193232A
- Authority
- JP
- Japan
- Prior art keywords
- drainage
- pipe joint
- wall
- pipe
- backflow prevention
- 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.)
- Granted
Links
Landscapes
- Sink And Installation For Waste Water (AREA)
- Branch Pipes, Bends, And The Like (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、例えばマンショ
ン等の中高層建築物における排水経路に用いられる管継
手であって、排水立て管に例えば大便器排水用あるいは
雑排水用の横枝管を接続するための排水集合管継手（以
下、単に「管継手」とも言う）および該管継手を製作す
るための消失模型に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe joint for use in a drainage path of a middle-to-high-rise building such as a condominium, for example, in which a horizontal branch pipe for toilet bowl drainage or gray drainage is connected to a drainage stack pipe. Drainage collecting pipe joint (hereinafter, also simply referred to as "pipe joint") and a vanishing model for manufacturing the pipe joint.
【０００２】[0002]
【従来の技術】一般に、この種の管継手は、各階におい
て別々の横枝管を経て排水される大便器排水や雑排水
（台所や浴槽等からの排水）を一本の排水立て管に流入
させるため、複数の横枝管受け口を備えている。このた
め、例えば図７に示すように通常平面的に見て相互に直
交する位置に配置される２箇所の受け口５０，５１のう
ち一方の受け口５０を経て大量の大便器排水Ｈが流入す
ると、この大便器排水Ｈは流入方向前方の管内壁に衝突
して左右に分岐し、この分岐した大便器排水ｈがもう一
方の受け口である雑排水用の受け口５１に逆流する問題
が発生していた。2. Description of the Related Art In general, a pipe joint of this kind flows into a single drain stack through a toilet drain or a miscellaneous drain (drain from a kitchen or a bathtub) drained through separate horizontal branch pipes on each floor. For this purpose, a plurality of horizontal branch pipe receiving ports are provided. For example, as shown in FIG. 7, when a large amount of toilet wastewater H flows through one of the two receiving ports 50, 51 arranged at positions orthogonal to each other when viewed in a plan view, The toilet wastewater H collides with the inner wall of the pipe in front of the inflow direction and branches right and left, and a problem occurs in which the branched toilet wastewater h flows backward into the other drainage receiving port 51 for miscellaneous drainage. .
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、未だこ
の逆流の問題を積極的に解消しようとする試みはなされ
ていない。特に、近年この種の管継手のコンパクト化
（横枝管受け口が配置される胴部の小径化）が図られて
いる中、この逆流の問題は以前にも増して解決すべき課
題としてクローズアップされてきている。そこで、本発
明は、横枝管から流入した排水（主として大便器排水）
が、他の横枝管受け口（主として雑排水用受け口）に逆
流することをより確実に防止することができる排水集合
管継手および該管継手を消失模型鋳造法により製作する
際に用いる消失模型を提供することを目的とする。However, no attempt has been made to actively solve the problem of the backflow. In particular, in recent years, this type of pipe joint has been made more compact (reducing the diameter of the body where the horizontal branch pipe receiving port is disposed), and the problem of this backflow has been increasing as a problem to be solved more than before. Have been. Therefore, the present invention provides a wastewater flowing from a horizontal branch pipe (mainly toilet flushing water).
However, a drainage collecting pipe joint that can more reliably prevent backflow to another horizontal branch pipe receiving port (mainly a miscellaneous drainage receiving port) and a vanishing model used when the pipe joint is manufactured by a vanishing model casting method. The purpose is to provide.
【０００４】[0004]
【課題を解決するための手段】このため、請求項１記載
の排水集合管継手は、排水立て管に複数の排水横枝管を
接続するための排水集合管継手であって、前記排水横枝
管を接続するための受け口の管継手内壁側の開口部に沿
って、該開口部への排水の逆流を防止するための逆流防
止壁を管継手内方に向けて張出し形成したことを特徴と
する。この排水集合管継手によれば、他の受け口から流
入した排水が対向する管内壁に衝突した後、左右に分岐
し、そのまま管内壁を伝わって当該受け口の開口部に至
る場合に、当該受け口の開口部には逆流防止壁が管内方
に向けて張出し形成されているので、上記管内壁を伝わ
る排水はこの逆流防止壁に遮られて当該受け口の内部に
逆流しない。この逆流防止壁は、当該受け口の開口部全
周に沿って形成しておく他、上記管内壁を伝わる排水が
至る側にのみ形成しておいてもよい。必要に応じた範囲
（管壁を伝わる排水が至る側）にのみ逆流防止壁を設け
ておけば、その分張出し部分が少なくなるので、逆流防
止壁に固形物等が堆積あるいは引っ掛かる問題を生ずる
ことはない。この逆流防止壁は、管継手製作段階で一体
に形成しておいても、別体で製作した逆流防止壁を接着
等の手段により所定の位置に後付けしてもよい。従っ
て、逆流防止壁は、管継手本体とは別の材質で製作して
もよい（例えば樹脂製）。According to a first aspect of the present invention, there is provided a drainage joint for connecting a plurality of drainage lateral branch pipes to a drainage stack, wherein the drainage horizontal branch is provided. Along with an opening on the pipe joint inner wall side of the receptacle for connecting the pipe, a backflow prevention wall for preventing backflow of drainage to the opening is formed to protrude inward of the pipe joint. I do. According to this drainage joint, when the drainage flowing from the other port collides with the opposing pipe inner wall, it branches right and left, and then directly travels along the pipe inner wall to reach the opening of the receiving port. Since the backflow prevention wall is formed in the opening so as to protrude toward the inside of the pipe, the drainage flowing through the inside wall of the pipe is blocked by the backflow prevention wall and does not flow back into the receiving port. This backflow prevention wall may be formed along the entire periphery of the opening of the receptacle, or may be formed only on the side to which the drainage transmitted through the pipe inner wall reaches. If the backflow prevention wall is provided only in the necessary range (the side to which the drainage flowing through the pipe wall reaches), the overhanging portion will be reduced, and the problem that solids and the like accumulate or get caught on the backflow prevention wall may occur. There is no. The backflow prevention wall may be formed integrally at the stage of manufacturing the pipe joint, or a separately manufactured backflow prevention wall may be attached to a predetermined position by means such as bonding. Therefore, the backflow prevention wall may be made of a material different from that of the pipe joint body (for example, made of resin).
【０００５】また、請求項２記載の排水集合管継手は、
排水立て管に大便器排水用の横枝管と雑排水用の横枝管
を接続するための排水集合管継手であって、前記雑排水
用の横枝管を接続するための受け口の管継手内壁側の開
口部に沿って、該開口部への前記大便器排水の逆流を防
止するための逆流防止壁を管継手内方に向けて張出し形
成したしたことを特徴とする。この排水集合管継手によ
れば、管継手内部に流入した大便器排水が雑排水用の受
け口に逆流することが防止される。すなわち、横枝管、
受け口を経て管継手内部に流入した大量の大便器排水
は、対向する管内壁面に衝突して左右に分岐し、然る後
管内壁面を伝わって雑排水用の受け口側に至る。従来で
あれば、この分岐後の大便器排水が雑排水用の受け口に
逆流していた。しかしながら、請求項２記載の構成によ
れば、雑排水用受け口の開口部には逆流防止壁が管内方
へ向けた張出し形成されているので、分岐後管内壁面を
伝わる大便器排水はこの逆流防止壁に遮られて雑排水用
の受け口に逆流しない。施工上の理由から、この種の管
継手における大便器排水用の受け口は雑排水用の受け口
よりも通常上側にずれて配置されている。しかも、大便
器排水は一度に大量に流される場合が多い。このような
理由から大便器排水は管継手内部に流入した後、対向す
る管内壁面に勢いよく衝突し、衝突後左右に分岐してそ
のまま管内壁面を伝わって側方へ流下（分流）する。通
常大便器排水用の受け口に対して直交する位置に雑排水
用の受け口が配置されている。このため上記分岐した大
便器排水は、従来であれば側方へ流下した後雑排水用の
受け口に逆流（流入）する場合があった。しかしなが
ら、雑排水用受け口の開口部に逆流防止壁が張出し形成
されているので、この逆流防止壁に遮られて分流した大
便器排水が雑排水用の受け口に逆流することは確実に防
止される。[0005] The drainage pipe joint according to claim 2 is
A drainage pipe joint for connecting a horizontal branch pipe for toilet drainage and a horizontal branch pipe for miscellaneous drainage to a drainage stack, and a pipe joint for a receptacle for connecting the horizontal branch pipe for miscellaneous drainage. A backflow preventing wall for preventing backflow of the toilet drainage into the opening is formed to extend inward of the pipe joint along the opening on the inner wall side. According to the drainage pipe joint, the toilet bowl drainage that has flowed into the pipe joint is prevented from flowing back to the miscellaneous drainage receiving port. That is, the horizontal branch pipe,
A large amount of toilet drainage that has flowed into the fitting via the receiving port collides with the opposing pipe inner wall surface and branches right and left, and then travels along the pipe inner wall surface to reach the miscellaneous drainage port side. Conventionally, the toilet drainage after this branch has flowed back to the wastewater drainage port. However, according to the second aspect of the present invention, since the backflow prevention wall is formed so as to protrude toward the inside of the pipe at the opening of the miscellaneous drainage port, the toilet flush draining along the inside wall of the pipe after branching is prevented from flowing back. It is not blocked by the wall and does not flow back to the drain for gray water. For construction reasons, the receptacle for toilet bowl drainage in this type of pipe joint is usually offset above the drainage drainage port. In addition, toilet bowl drainage is often flushed in large quantities at one time. For such a reason, the toilet flush drains into the pipe joint and then collides vigorously with the opposing inner wall surface of the pipe, branches right and left after the collision, flows down the inner wall surface of the pipe as it is, and flows down (divides) to the side. Normally, a drain for miscellaneous drainage is arranged at a position orthogonal to the receptacle for draining toilet bowl. For this reason, in some cases, the above-mentioned sewage toilet water that has been branched off may flow back to the side and then flow back (inflow) to the gray water drainage port. However, since the backflow prevention wall is formed so as to protrude at the opening of the miscellaneous drainage port, the toilet bowl drainage that is blocked by the backflow prevention wall and diverted is reliably prevented from flowing back to the miscellaneous drainage port. .
【０００６】請求項３記載の排水集合管継手は、請求項
１又は２記載の排水集合管継手であって、逆流防止壁を
開口部の、排水衝突側の側部に沿って形成したことを特
徴とする。この排水集合管継手によれば、分流した排水
（大便器排水）の逆流を防止するために必要最小限の範
囲で逆流防止壁を設けておけばよく、必ずしも受け口開
口部の全周に沿って逆流防止壁を形成しておく必要はな
い。管内方への張出し部分が多いと、流下する排水中に
含まれる固形物等が堆積しやすくなる問題が発生する。
そこで、必要最小限の範囲で逆流防止壁を張出し形成す
ることが望ましい。逆流防止壁を張出し形成する範囲
は、受け口開口部に沿った方向の範囲であるとともに、
管内方への張出し寸法についての範囲であることを意味
する。According to a third aspect of the present invention, there is provided a drainage pipe joint according to the first or second aspect, wherein the backflow preventing wall is formed along a side of the opening on the side of the drainage collision side. Features. According to this drain collecting pipe joint, a backflow prevention wall may be provided in a minimum necessary range in order to prevent a backflow of the diverted drainage (toilet bowl drainage), and the wall may not necessarily extend along the entire circumference of the receptacle opening. It is not necessary to form a backflow prevention wall. If there are many projecting portions inward of the pipe, there arises a problem that solids and the like contained in the drainage flowing down are easily deposited.
Therefore, it is desirable to form the backflow prevention wall overhang within the minimum necessary range. The range in which the backflow prevention wall is formed overhanging is a range in the direction along the receptacle opening,
It means that it is within the range of the overhang dimension in the pipe.
【０００７】請求項４記載の排水集合管継手は、請求項
１又は２記載の排水集合管継手であって、逆流防止壁を
開口部の側部および上部に沿って形成したことを特徴と
する。この排水集合管継手によれば、逆流防止壁の、開
口部の側部に沿った部分により上記分流した大便器排水
の逆流を防止できるとともに、開口部の上部に沿った部
分により立て管排水の逆流をも防止することができる。According to a fourth aspect of the present invention, there is provided a drainage pipe joint according to the first or second aspect, wherein the backflow preventing wall is formed along a side portion and an upper portion of the opening. . According to this drainage collecting pipe joint, the backflow prevention wall can prevent backflow of the separated toilet bowl drainage by a portion along the side of the opening, and a part of the vertical drainage by the portion along the upper part of the opening. Backflow can also be prevented.
【０００８】請求項５記載の排水集合管継手は、請求項
１又は２記載の排水集合管継手であって、逆流防止壁を
開口部の全周に沿って形成したことを特徴とする。この
排水集合管継手によれば、あらゆる方向からの逆流を防
止することができる。According to a fifth aspect of the present invention, there is provided a drainage pipe joint according to the first or second aspect, wherein the backflow prevention wall is formed along the entire circumference of the opening. According to the drainage pipe joint, backflow from all directions can be prevented.
【０００９】請求項６記載の排水集合管継手は、請求項
３〜５の何れかに記載の排水集合管継手であって、受け
口が管継手本体とは別体で製作され、該別体型の受け口
側に逆流防止壁を形成したことを特徴とする。この排水
集合管継手によっても同様の作用効果を得ることができ
る。受け口一体型の管継手に限らず、受け口別体型の管
継手にも適用でき、この場合逆流防止壁は上記のように
受け口側に設けても、管継手本体側に設けてもよい。[0009] The drainage collecting pipe joint according to claim 6 is the drainage collecting pipe joint according to any one of claims 3 to 5, wherein the receiving port is manufactured separately from the pipe fitting main body. A backflow prevention wall is formed on the receiving port side. The same operation and effect can be obtained by this drain collecting pipe joint. The present invention can be applied not only to the pipe joint integrated with the receiving port but also to a separate pipe fitting of the receiving port. In this case, the backflow prevention wall may be provided on the receiving port side as described above or on the pipe fitting main body side.
【００１０】請求項７記載の消失模型は、請求項３〜５
の何れかに記載の排水集合管継手を消失模型鋳造法によ
り製作する際に用いる受け口用の消失模型であって、管
継手内壁よりも内方に張り出す逆流防止壁用の壁部を形
成したことを特徴とする。この消失模型によれば、管継
手を消失模型鋳造法により製作する場合に、上記作用効
果を奏する逆流防止壁を所定の位置に容易に形成するこ
とができる。消失模型の段階で逆流防止壁用の壁部を形
成しておけば、張出し形成する範囲あるいは張出し寸法
等に関して任意の逆流防止壁を簡単に設けることができ
る。[0010] The vanishing model according to the seventh aspect is the third aspect of the present invention.
The drainage collecting pipe joint according to any one of the above, is a vanishing model for a receiving port used when manufacturing by a vanishing model casting method, and has a wall portion for a backflow prevention wall that protrudes inward from an inner wall of the pipe joint. It is characterized by the following. According to this vanishing model, when the pipe joint is manufactured by the vanishing model casting method, the backflow prevention wall having the above-mentioned effects can be easily formed at a predetermined position. If a wall for the backflow prevention wall is formed at the stage of the disappearance model, an arbitrary backflow prevention wall can be easily provided with respect to the range of the overhang formation or the overhang dimension.
【００１１】[0011]
【発明の実施の形態】次に、本発明の種々実施形態を図
１〜図６に基づいて説明する。図１および図２は第１実
施形態の排水集合管継手１を示している。この管継手１
は上流側の立て管２ａを接続するための上部受け口２
と、下流側の立て管３ａの受け口に挿入接続される下部
接続口３を備えている。上部受け口２の下側には若干大
径の胴部４が形成され、この胴部４に大便器排水用の横
枝管Ｄを接続するための大便器排水用の受け口５と、雑
排水用の横枝管Ｚを接続するための雑排水用の受け口６
が設けられている。大便器排水用の受け口５と雑排水用
の受け口６は相互に直交する位置関係に配置されてい
る。また、大便器排水用の受け口５は胴部４の上側に位
置し、雑排水用の受け口６は下側に位置しており、両受
け口５，６は上下にずれて配置されている。胴部４の下
側には下方へ徐々に小径となるテーパ管部７が形成さ
れ、このテーパ管部７の下側に上記下部接続口３が設け
られている。胴部４の下端部からテーパ管部７に至る内
壁面には減速ガイド８が、テーパ管部７の内壁面には通
気調整ガイド９がそれぞれ内方へ張出し形成されてお
り、これらは流入した排水を受け止めて減速させつつ管
内壁面に沿って旋回させる機能を有するもので、これに
より管内中心部を大気に連通（空気コア）させて管内の
圧力変動を低減できるようになっている。これら排水集
合管継手１の基本的な構成については特に変更を要しな
い。図中Ｃはコンクリートスラブを示しており、このコ
ンクリートスラブＣを貫いた状態に当該管継手１が固定
される。DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, various embodiments of the present invention will be described with reference to FIGS. 1 and 2 show a drainage pipe joint 1 according to a first embodiment. This pipe joint 1
Is an upper receptacle 2 for connecting an upright standing pipe 2a.
And a lower connection port 3 that is inserted and connected to the receptacle of the standing pipe 3a on the downstream side. A slightly large-diameter trunk 4 is formed below the upper receptacle 2, and a toilet drain drain 5 for connecting a horizontal branch pipe D for toilet drain to the trunk 4, and a drainage for miscellaneous drainage Drainage port 6 for connecting horizontal branch pipe Z
Is provided. The receptacle 5 for toilet bowl drainage and the receptacle 6 for miscellaneous drainage are arranged in a positional relationship orthogonal to each other. The receptacle 5 for toilet bowl drainage is located above the body 4, the receptacle 6 for miscellaneous drainage is located below, and the receptacles 5, 6 are vertically offset. A tapered tube portion 7 having a gradually decreasing diameter is formed below the body portion 4, and the lower connection port 3 is provided below the tapered tube portion 7. A deceleration guide 8 is formed on the inner wall surface extending from the lower end of the body portion 4 to the tapered tube portion 7, and a ventilation adjustment guide 9 is formed on the inner wall surface of the tapered tube portion 7 so as to extend inward. It has a function of receiving the drainage and turning it along the inner wall surface of the pipe while decelerating the pipe, whereby the center of the pipe communicates with the atmosphere (air core) to reduce pressure fluctuations in the pipe. The basic configuration of the drainage pipe joint 1 does not require any particular change. In the figure, C indicates a concrete slab, and the pipe joint 1 is fixed in a state penetrating the concrete slab C.
【００１２】さて、図示するように雑排水用の受け口６
の、管継手内壁側の開口部６ａには逆流防止壁１０が形
成されている。この逆流防止壁１０は、上記開口部６ａ
に沿って管内方へ張出し形成されている。しかも、図示
するように開口部６ａの、大便器排水Ｈが管内壁面に衝
突する地点側の側部に沿って、概ね上部から１／４周よ
りも若干下方に至る範囲に形成されている。この逆流防
止壁１０の管内方への張出し寸法は、図３に示すように
管内壁を伝わる排水を堰き止めるに必要かつ十分な寸法
に設定されている。この張出し寸法は、流下する大便器
排水に含まれる固形物の堆積等を回避するため極力小さ
く、また角部を有しないことが望ましい。具体的には、
断面略半円形状に盛り上げる程度に張出し形成すること
が望ましい。Now, as shown in FIG.
A backflow prevention wall 10 is formed in the opening 6a on the pipe joint inner wall side. The backflow prevention wall 10 is provided with the opening 6a.
Along the inside of the tube. Moreover, as shown in the figure, the opening 6a is formed along the side of the point where the toilet drainage H collides with the inner wall surface of the pipe, so as to extend from the upper portion to a position slightly lower than 1/4 turn. The dimension of the backflow prevention wall 10 projecting inward of the pipe is set to a dimension necessary and sufficient to block the drainage transmitted through the inner wall of the pipe as shown in FIG. It is desirable that the overhang size be as small as possible and have no corners in order to avoid the accumulation of solid matter contained in the toilet water flowing down. In particular,
It is desirable to form the overhang so as to raise the cross section into a substantially semicircular shape.
【００１３】このような逆流防止壁１０を設けた排水集
合管継手１によれば、大便器排水用の横枝管Ｄを経て受
け口５から勢いよく流入した大量の大便器排水Ｈは、図
３に示すように当該受け口５に対向する管内壁面に衝突
し、然る後左右に分岐する。分岐した一方の大便器排水
ｈは、管内壁に沿って受け口６の開口部６ａ側に回り込
む。しかしながら、この開口部６ａには逆流防止壁１０
が張出し形成されているので、この大便器排水ｈの流れ
は逆流防止壁１０によって堰き止められ、従って受け口
６内に逆流することなく下方へ流下する。このように所
定の位置に逆流防止壁１０を張出し形成しておくだけ
で、当該受け口６内への逆流を確実に防止することがで
き、近年における管継手の小サイズ化にも大きなコスト
アップを招くことなく十分対応することができる。According to the drainage collecting pipe joint 1 provided with such a backflow prevention wall 10, a large amount of toilet bowl drainage H which has flowed vigorously from the receptacle 5 through the horizontal branch pipe D for toilet bowl drainage is shown in FIG. As shown in (1), it collides with the inner wall surface of the pipe facing the receiving port 5, and then branches right and left. One of the branched toilet bowl drains h wraps around the opening 6a of the receptacle 6 along the inner wall of the pipe. However, this opening 6a has a backflow prevention wall 10
Is formed so that the flow of the toilet drain water h is blocked by the backflow prevention wall 10 and thus flows downward without flowing back into the receptacle 6. By simply forming the backflow prevention wall 10 at a predetermined position in this manner, backflow into the receiving port 6 can be reliably prevented, and a large cost increase can be achieved even in recent years in reducing the size of the pipe joint. It is possible to respond sufficiently without inviting.
【００１４】次に、上記逆流防止壁１０を設ける範囲に
ついては図４に示すように種々変更を加えることができ
る。例えば、上記実施形態では、雑排水用受け口６の開
口部６ａの、大便器排水衝突地点側の側部の、上部から
１／４周よりも若干下方に至る範囲に形成した場合（図
４（Ａ）、以下「１／４周タイプ」という）を例示した
が、図４（Ｂ）に示すように大便器排水衝突地点側の側
部のみならず、反対側の側部にも対称（逆Ｕ字型）に形
成する構成（以下、「逆Ｕ字タイプ」という）としても
よい。この逆Ｕ字タイプの逆流防止壁１１によれば、当
該開口部６ａの上部に沿って張出し形成されているの
で、前記例示したように大便器排水Ｈの逆流を防止でき
るばかりでなく、立て管排水の逆流をも防止することが
できる。また、図４（Ｃ）に示すように逆流防止壁１２
は開口部６ａの全周にわたって張出し形成してもよい。
この全周タイプの逆流防止壁１２によれば、あらゆる方
向から流下あるいは飛散する排水の逆流を防止すること
ができる。Next, the range in which the backflow prevention wall 10 is provided can be variously changed as shown in FIG. For example, in the above-described embodiment, the opening 6a of the miscellaneous drainage port 6 is formed in a range slightly lower than 1/4 turn from the upper side of the side of the toilet drainage collision point (FIG. 4 ( A), hereinafter referred to as “1/4 turn type”), but as shown in FIG. 4 (B), not only the side on the side of the toilet drainage collision point but also the side on the opposite side is symmetrical (reverse). It may be configured to be formed in a U-shape (hereinafter, referred to as “inverted U-shape”). According to the reverse U-shaped backflow prevention wall 11, the backflow prevention wall 11 is formed so as to protrude along the upper portion of the opening 6a. The backflow of drainage can also be prevented. Also, as shown in FIG.
May be formed over the entire periphery of the opening 6a.
According to the backflow prevention wall 12 of the full circumference type, the backflow of the drainage flowing down or scattered from all directions can be prevented.
【００１５】次に、図５には当該排水集合管継手１を消
失模型鋳造法により製作する場合に用いる消失模型２０
が示されている。図６（Ａ）は管継手全体の消失模型２
０を示し、図５（Ｂ）はその雑排水用の受け口部分を製
作するための消失模型２１を示している。受け口用消失
模型２１は接着により管継手本体部分の所定位置に固定
される。この点は特に変更を要しない。また、消失模型
鋳造法および消失模型の材質についても特に変更を要す
るものではないので、その説明を省略する。さて、図示
するように雑排水用受け口を鋳造するための消失模型２
１の、管継手内方側の端部には取付け用のフランジ部２
１ｃが形成され、このフランジ部２１ｃの内周側に、受
け口の管継手内方側の開口部を形成するための開口部２
１ａとなっている。この開口部２１ａに沿って、前記逆
Ｕ字型の逆流防止壁１１（図４（Ｂ）参照）を鋳造する
ための壁部２１ｂが同じく逆Ｕ字型に張出し形成されて
いる。その張出し寸法等の形状については、目的とする
逆流防止壁に合わせて適切に設定する必要がある。この
ように、管継手を消失模型鋳造法により製作する場合に
は、消失模型の段階で適切な壁部２１ｂを形成しておく
ことにより、前記逆流防止壁１１を容易に得ることがで
きる。なお、上記壁部２１ｂを開口部２１ａの片側ある
いは全周に形成することにより、前記１／４周タイプの
逆流防止壁１０（図４（Ａ）参照）あるいは全周タイプ
の逆流防止壁１２（図４（Ｃ）参照）を容易に得ること
ができる。Next, FIG. 5 shows a vanishing model 20 used when the drainage pipe joint 1 is manufactured by a vanishing model casting method.
It is shown. FIG. 6 (A) shows the disappearance model 2 of the entire pipe joint.
0, and FIG. 5 (B) shows a vanishing model 21 for manufacturing a receiving portion for the gray water. The receiving vanishing model 21 is fixed to a predetermined position of the pipe joint main body by bonding. This does not require any change. Also, the vanishing model casting method and the material of the vanishing model do not need to be particularly changed, and therefore, the description thereof is omitted. Now, as shown in the figure, a vanishing model 2 for casting a drainage drainage port.
1. A flange portion 2 for mounting is provided on the inner end of the pipe joint.
1c is formed on the inner peripheral side of the flange portion 21c.
1a. Along the opening 21a, a wall 21b for casting the reverse U-shaped backflow prevention wall 11 (see FIG. 4 (B)) is also formed in an inverted U-shape. It is necessary to appropriately set the shape such as the overhang dimension according to the intended backflow prevention wall. As described above, when the pipe joint is manufactured by the vanishing model casting method, the backflow prevention wall 11 can be easily obtained by forming an appropriate wall portion 21b at the stage of the vanishing model. By forming the wall 21b on one side or the entire circumference of the opening 21a, the 1/4 circumference type backflow prevention wall 10 (see FIG. 4A) or the full circumference type backflow prevention wall 12 ( FIG. 4C) can be easily obtained.
【００１６】次に、上記例示した逆流防止壁１０〜１２
は、管継手本体に一体に形成された受け口６に適用した
場合を例示したが、本発明に係る逆流防止壁は、管継手
本体とは別体で製作した受け口にも同様に適用すること
ができる。この別体型の受け口３０が図６に例示されて
いる。この受け口３０も雑排水用の横枝管Ｚを接続する
ためのもので、管継手本体３１の取付け座部３１ａの内
周側にセットされ、固定フランジ３２および固定ボルト
３３〜３３を用いて管継手本体３１に固定されている。
なお、当該受け口３０の内周側には円筒形状のパッキン
３５が装着され、その外側端面（図示右端面）を上記固
定フランジ３２で押さえ付けることにより当該受け口３
０が所定の位置に固定され、また横枝管Ｚが抜けない用
に固定される。また、当該受け口３０と管継手本体３１
の取付け座３１ａとの間にもパッキン３６が介装されて
両者間の水密性が確保されている。このようにして取付
けられる別体型の受け口３０の、管継手内方側の開口部
３０ａに沿って前記と同様の逆流防止壁３０ｂが形成さ
れている。この逆流防止壁３０ｂは図６（Ｃ）に示すよ
うに開口部３０ａに沿って逆Ｕ字型に形成されている。
しかしながら、この受け口別体型の場合も、前記と同様
必要に応じて大便器排水が衝突する側の片側にのみ形成
してもよく、あるいは開口部３０ａの全周に沿って形成
してもよい。Next, the backflow prevention walls 10 to 12 exemplified above are used.
Has exemplified the case where the present invention is applied to the receptacle 6 formed integrally with the pipe joint body, but the backflow prevention wall according to the present invention can be similarly applied to a receptacle manufactured separately from the pipe joint body. it can. This separate receptacle 30 is illustrated in FIG. This receiving port 30 is also for connecting a horizontal branch pipe Z for miscellaneous drainage, and is set on the inner peripheral side of the mounting seat portion 31a of the pipe joint body 31, and is connected to the pipe using a fixing flange 32 and fixing bolts 33 to 33. It is fixed to the joint body 31.
A cylindrical packing 35 is attached to the inner peripheral side of the receiving port 30, and the outer end face (the right end face in the drawing) is pressed by the fixing flange 32 to thereby form the receiving port 3.
0 is fixed at a predetermined position, and the horizontal branch pipe Z is fixed so as not to come off. In addition, the socket 30 and the pipe joint body 31
The packing 36 is also interposed between the mounting seat 31a and the watertightness between the two. A backflow prevention wall 30b similar to the above is formed along the opening 30a on the inner side of the pipe joint of the separate receptacle 30 attached in this manner. The backflow prevention wall 30b is formed in an inverted U-shape along the opening 30a as shown in FIG.
However, also in the case of the separate receptacle type, as described above, it may be formed only on one side on the side where the toilet drainage collides, if necessary, or may be formed along the entire circumference of the opening 30a.
【００１７】以上説明した各実施形態にはさらに変更を
加えることができる。例えば、大便器排水用の横枝管Ｄ
と雑排水用の横枝管Ｚが１本づつ接続される排水集合管
継手１を例示したが、大便器排水用あるいは雑排水用の
横枝管Ｄ，Ｚが２本以上接続される排水集合管継手であ
っても同様に適用することができる。また、雑排水用の
受け口６にのみ逆流防止壁１０（または１１，１２）を
設ける構成を例示したが、大便器排水用の受け口５にも
必要に応じて同様の逆流防止壁を設けてもよい。さら
に、いわゆる一体型の排水集合管継手を例示したが、上
下に２分されたいわゆる２体型の排水集合管継手にも同
様に適用することができる。この２体型の管継手におい
て、上部継手に大便器排水用の受け口が設けられ、下部
継手に雑排水用の受け口が設けられた場合であっても、
両受け口が相互に直交する位置関係に接続される場合で
あれば同様の問題が生じうるので、前記例示した逆流防
止壁１０（または１１，１２）を設けることにより雑排
水用の受け口への大便器排水の逆流を防止することがで
きる。The embodiments described above can be further modified. For example, a horizontal branch pipe D for urinal drainage
And the horizontal branch pipes Z for miscellaneous drainage are connected one by one. However, the drainage collection pipe connects two or more horizontal branch pipes D and Z for toilet bowl drainage or miscellaneous drainage. The same can be applied to a pipe joint. Further, the configuration in which the backflow prevention wall 10 (or 11, 12) is provided only in the receptacle 6 for miscellaneous drainage is illustrated, but the same backflow prevention wall may be provided in the receptacle 5 for toilet drainage as necessary. Good. Further, while a so-called integral drainage joint has been exemplified, the present invention can be similarly applied to a so-called two-piece drainage joint which is vertically divided into two parts. In this two-piece type pipe joint, even if the upper joint is provided with a toilet drainage receptacle and the lower joint is provided with a miscellaneous drainage receptacle,
A similar problem may occur if the two receptacles are connected in a mutually orthogonal positional relationship. By providing the above-described backflow prevention wall 10 (or 11, 12), a large drainage receptacle can be provided. The backflow of the toilet drain can be prevented.
【図１】本発明の実施形態を示す図であり、排水集合管
継手の全体斜視図である。本図では、当該管継手の内部
が透視して示されており、排水の流れが矢印で示されて
いる。FIG. 1 is a view showing an embodiment of the present invention, and is an overall perspective view of a drainage pipe joint. In this figure, the inside of the pipe joint is shown in a see-through manner, and the flow of drainage is indicated by arrows.
【図２】排水集合管継手の縦断面図である。本図におい
ても排水の流れが矢印で示されている。FIG. 2 is a longitudinal sectional view of a drainage pipe joint. Also in this figure, the flow of drainage is indicated by arrows.
【図３】排水集合管継手の横断面図である。本図におい
ても排水の流れが矢印で示されている。FIG. 3 is a cross-sectional view of a drainage pipe joint. Also in this figure, the flow of drainage is indicated by arrows.
【図４】逆流防止壁を設ける範囲を示す図であり、
（Ａ）は開口部の１／４周よりもやや長い範囲に設けた
例であり、（Ｂ）は開口部に対して左右対称に設けた例
であり、（Ｃ）は開口部の全周に沿って設けた例を示
す。FIG. 4 is a view showing a range in which a backflow prevention wall is provided;
(A) is an example provided in a range slightly longer than １ ／ of the opening, (B) is an example provided symmetrically with respect to the opening, and (C) is an entire circumference of the opening. The example provided along is shown.
【図５】逆流防止壁用の壁部を設けた消失模型を示す図
であり、（Ａ）は消失模型全体の縦断面図を示し、
（Ｂ）は受け口単体の斜視図を示す。FIG. 5 is a view showing a vanishing model provided with a wall portion for a backflow prevention wall, (A) is a longitudinal sectional view of the entire vanishing model,
(B) shows a perspective view of the receptacle alone.
【図６】別体型の受け口を示す図であり、（Ａ）は管継
手本体に取り付けた状態の縦断面図、（Ｂ）は受け口単
体の側面図、（Ｃ）は（Ｂ）の（Ｃ）矢視図であって、
受け口単体の背面図である。FIGS. 6A and 6B are views showing a separate receptacle, in which FIG. 6A is a longitudinal sectional view showing a state where the receptacle is attached to the pipe joint body, FIG. 6B is a side view of the receptacle alone, and FIG. ) Arrow view,
It is a rear view of a receptacle only.
【図７】逆流防止壁を有しない従来の排水集合管継手の
横断面図である。本図において排水が矢印で示され、大
便器排水が対向壁面に衝突した後分岐して、雑排水用の
受け口に逆流する様子が示されている。FIG. 7 is a cross-sectional view of a conventional drainage pipe joint having no backflow prevention wall. In this figure, the drainage is indicated by an arrow, and the toilet bowl drainage collides with the opposing wall surface, branches off, and flows back to the miscellaneous drainage receiving port.
１…排水集合管継手 ２…上部受け口、３…下部接続口、４…胴部 ５…大便器排水用の受け口 ６…雑排水用の受け口、６ａ…開口部 ７…テーパ管部、８…減速ガイド、９…通気調整ガイド １０…逆流防止壁（１／４周タイプ） １１…逆流防止壁（逆Ｕ字タイプ） １２…逆流防止壁（全周タイプ） Ｄ…大便器排水用の横枝管 Ｚ…雑排水用の横枝管 Ｈ…大便器排水、ｈ…分岐後の大便器排水 ２０…消失模型 ２１…受け口用消失模型 ２１ａ…開口部、２１ｂ…壁部 ３０…別体型の受け口 ３０ａ…開口部、３０ｂ…逆流防止壁 DESCRIPTION OF SYMBOLS 1 ... Drainage collecting pipe joint 2 ... Upper receiving port, 3 ... Lower connecting port, 4 ... Trunk part 5 ... Receiving port for toilet bowl drainage 6 ... Receiving port for miscellaneous drainage, 6a ... Opening 7 ... Tapered pipe section, 8 ... Deceleration Guide, 9: Ventilation adjustment guide 10: Backflow prevention wall (1/4 circumference type) 11 ... Backflow prevention wall (reverse U-shaped type) 12 ... Backflow prevention wall (full circumference type) D: Horizontal branch pipe for toilet drain Z: horizontal branch pipe for miscellaneous drainage H: toilet drainage, h: toilet drainage after branching 20: vanishing model 21 ... vanishing model for receptacle 21a ... opening, 21b ... wall 30 ... separate receptacle 30a ... Opening, 30b ... backflow prevention wall
Claims (7)
るための排水集合管継手であって、前記排水横枝管を接
続するための受け口の管継手内壁側の開口部に沿って、
該開口部への排水の逆流を防止するための逆流防止壁を
管継手内方に向けて張出し形成したことを特徴とする排
水集合管継手。1. A drainage joint for connecting a plurality of drainage lateral branch pipes to a drainage stack, the drainage joint being connected to the drainage horizontal branch pipe along an opening on the pipe joint inner wall side. ,
A drainage pipe joint, wherein a backflow prevention wall for preventing backflow of drainage water into the opening is formed so as to protrude inward of the pipe joint.
排水用の横枝管を接続するための排水集合管継手であっ
て、前記雑排水用の横枝管を接続するための受け口の管
継手内壁側の開口部に沿って、該開口部への前記大便器
排水の逆流を防止するための逆流防止壁を管継手内方に
向けて張出し形成したことを特徴とする排水集合管継
手。2. A drainage pipe joint for connecting a horizontal branch pipe for toilet bowl drainage and a horizontal branch pipe for miscellaneous drainage to a drainage stack pipe, for connecting the horizontal branch pipe for miscellaneous drainage. A backflow preventing wall for preventing backflow of the toilet drainage into the opening along the opening on the inner wall side of the pipe joint of the receptacle, and formed to extend inwardly of the pipe joint. Collective pipe joint.
あって、逆流防止壁を開口部の、排水衝突側の側部に沿
って形成したことを特徴とする排水集合管継手。3. The drainage pipe joint according to claim 1, wherein the backflow prevention wall is formed along a side of the opening on the side of the drainage collision side.
あって、逆流防止壁を開口部の側部および上部に沿って
形成したことを特徴とする排水集合管継手。4. The drainage pipe joint according to claim 1, wherein the backflow prevention wall is formed along the side and upper part of the opening.
あって、逆流防止壁を開口部の全周に沿って形成したこ
とを特徴とする排水集合管継手。5. The drainage pipe joint according to claim 1, wherein the backflow prevention wall is formed along the entire circumference of the opening.
管継手であって、受け口が管継手本体とは別体で製作さ
れ、該別体型の受け口側に逆流防止壁を形成したことを
特徴とする排水集合管継手。6. The drainage joint according to claim 3, wherein the receiving port is formed separately from the pipe joint body, and a backflow prevention wall is formed on the receiving port side of the separate type. A drain collecting pipe joint characterized by the above-mentioned.
管継手を消失模型鋳造法により製作する際に用いる受け
口用の消失模型であって、管継手内壁よりも内方に張り
出す逆流防止壁用の壁部を形成したことを特徴とする排
水集合管継手を製作するための消失模型。7. A vanishing model for a receiving port used when producing the drainage collecting pipe joint according to any one of claims 3 to 5 by a vanishing model casting method, and protrudes inward from an inner wall of the pipe joint. A vanishing model for manufacturing a drainage pipe joint characterized by forming a wall for a backflow prevention wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25542597A JP4124843B2 (en) | 1997-09-19 | 1997-09-19 | Drainage collecting pipe joint and disappearance model for producing the pipe joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25542597A JP4124843B2 (en) | 1997-09-19 | 1997-09-19 | Drainage collecting pipe joint and disappearance model for producing the pipe joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1193232A true JPH1193232A (en) | 1999-04-06 |
| JP4124843B2 JP4124843B2 (en) | 2008-07-23 |
Family
ID=17278594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25542597A Expired - Fee Related JP4124843B2 (en) | 1997-09-19 | 1997-09-19 | Drainage collecting pipe joint and disappearance model for producing the pipe joint |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4124843B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003232062A (en) * | 2001-12-04 | 2003-08-19 | Noriatsu Kojima | Drain pipe joint |
| JP2004084395A (en) * | 2002-08-28 | 2004-03-18 | Kubota Corp | Wastewater collecting pipe |
| JP2008196304A (en) * | 2008-03-24 | 2008-08-28 | Kubota Corp | Drainage collection pipe |
| JP2011085014A (en) * | 2011-02-03 | 2011-04-28 | Kubota Corp | Drain collecting pipe |
| JP2011085015A (en) * | 2011-02-03 | 2011-04-28 | Kubota Corp | Drain collecting pipe |
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| JPS63297637A (en) * | 1987-05-27 | 1988-12-05 | 株式会社クボタ | Drain joint pipe |
| JPH07167366A (en) * | 1993-11-24 | 1995-07-04 | Sekisui Chem Co Ltd | Drain pipeline and drain pipe joint used for drain pipeline |
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1997
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| JPS5332614B2 (en) * | 1973-06-21 | 1978-09-09 | ||
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| JPS63297637A (en) * | 1987-05-27 | 1988-12-05 | 株式会社クボタ | Drain joint pipe |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003232062A (en) * | 2001-12-04 | 2003-08-19 | Noriatsu Kojima | Drain pipe joint |
| JP2004084395A (en) * | 2002-08-28 | 2004-03-18 | Kubota Corp | Wastewater collecting pipe |
| JP4118635B2 (en) * | 2002-08-28 | 2008-07-16 | 株式会社クボタ | Drainage collecting pipe |
| JP2008196304A (en) * | 2008-03-24 | 2008-08-28 | Kubota Corp | Drainage collection pipe |
| JP2011085014A (en) * | 2011-02-03 | 2011-04-28 | Kubota Corp | Drain collecting pipe |
| JP2011085015A (en) * | 2011-02-03 | 2011-04-28 | Kubota Corp | Drain collecting pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4124843B2 (en) | 2008-07-23 |
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