JP2553254B2 - Invert type for sewage basins - Google Patents
Invert type for sewage basinsInfo
- Publication number
- JP2553254B2 JP2553254B2 JP3089448A JP8944891A JP2553254B2 JP 2553254 B2 JP2553254 B2 JP 2553254B2 JP 3089448 A JP3089448 A JP 3089448A JP 8944891 A JP8944891 A JP 8944891A JP 2553254 B2 JP2553254 B2 JP 2553254B2
- Authority
- JP
- Japan
- Prior art keywords
- sewage
- mold
- invert
- bottom portion
- step surface
- 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 - Lifetime
Links
Landscapes
- Sewage (AREA)
- Moulds, Cores, Or Mandrels (AREA)
Description
【0001】[0001]
【産業上の利用分野】本発明は、主として、公共下水道
に用いられる汚水桝を成形するための汚水桝用インバー
ト型に関し、合成樹脂成形体の底部の内面に、段面と、
所定の深さで落ち込ませた凹溝とを設け、段面を底部の
中心点より放流側に寄せた位置に設定した基準点に向か
って連続して下降傾斜させることにより、汚水桝用イン
バート型を用いて汚水桝を成形する際に、その汚水桝用
インバート型とその受型との間に生ずる隙間をなくし、
正確な形状の汚水桝を成形できるようにしたものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates mainly to an invert type for a waste water container for molding a waste water container used for public sewers, and relates to a bottom surface of a synthetic resin molding, a step surface,
An invert type for sewage basin is provided by providing a concave groove that is recessed at a predetermined depth, and by continuously inclining the step surface toward a reference point set at a position closer to the discharge side than the center point of the bottom part. When molding a sewage basin using, eliminate the gap between the sewage basin invert mold and its receiving mold,
It is designed so that a sewage basin with an accurate shape can be molded.
【0002】[0002]
【従来の技術】従来、コンクリート製の汚水桝を成形す
る場合、コンクリートに対する離型性のよい材質の型を
用い、その型にコンクリートを流し込んで成形してい
た。2. Description of the Related Art Conventionally, when molding a concrete sewage basin, a mold made of a material having a good releasability for concrete is used, and the concrete is poured into the mold.
【0003】[0003]
【発明が解決しようとする課題】しかしながら、上記従
来の汚水桝には次のような問題点があった。 (イ)型が鉄製であるため、重量が重く、成形時の取り
扱いが容易でない。特に公共下水用の汚水桝の場合は、
形状が大型になるため、このことが大きな問題点となっ
ていた。 (ロ)上記型を使用して成形される汚水桝はコンクリー
ト成形体である。このため汚水に含まれる各種化学物質
に侵されてしまうことがあり、また止水性が悪かった。 (ハ)汚水の流れる面がコンクリート面であるため、汚
水の流れに対する抵抗が大きかった。However, the above-mentioned conventional sewage basin has the following problems. (B) Since the mold is made of iron, it is heavy and not easy to handle during molding. Especially in the case of sewage basins for public sewage,
This is a big problem because the shape becomes large. (B) The sewage basin molded using the above mold is a concrete molded body. For this reason, it may be attacked by various chemical substances contained in the sewage, and the water-stopping property was poor. (C) Since the surface of the sewage flowing is a concrete surface, the resistance against the flow of the sewage was large.
【0004】[0004]
【課題を解決するための手段】上述した問題点を解決す
るため、本発明に係る汚水桝用インバート型は、底部と
その外周縁に沿って立ち上がる外壁部とを有する合成樹
脂成形体から成り、前記外壁部によって囲まれた前記底
部の内面は、段面と前記段面から所定の深さで落ち込む
凹溝とを含んでおり、前記凹溝は、外部に開口する流入
口及び放流口を有しており、前記段面は、前記凹溝によ
って複数に区画されていて、各段面の表面は、前記底部
の中心点の付近または前記中心点よりは放流側に寄せた
位置であって、前記凹溝内に設定した基準点に向かって
連続して下降傾斜し、しかも、同一面上に乗る平面状の
傾斜面となっていることを特徴とする。In order to solve the above-mentioned problems, an invert type for sewage basin according to the present invention comprises a synthetic resin molding having a bottom portion and an outer wall portion rising along an outer peripheral edge thereof, The inner surface of the bottom portion surrounded by the outer wall portion includes a step surface and a concave groove that falls from the step surface to a predetermined depth, and the concave groove has an inflow port and an outflow port that open to the outside. And, the step surface is divided into a plurality of by the recessed groove, the surface of each step surface is near the center point of the bottom portion or a position closer to the discharge side than the center point, It is characterized in that it is continuously inclined downward toward a reference point set in the groove and is a flat inclined surface that rides on the same plane.
【0005】[0005]
【作用】本発明に係る汚水桝用インバート型は、合成樹
脂成形体からなるので、軽量であり、成形作業及び持ち
運びが容易になり、また複雑な形状の型も容易に形成で
きる。The sewage basin invert mold according to the present invention is made of a synthetic resin molded product, and is therefore lightweight, easy to mold and carry, and a mold having a complicated shape can be easily formed.
【0006】しかも、底部とその外周縁に沿って立ち上
げた外壁部とを有する合成樹脂成形体の底部の内面に、
段面とこの段面から所定の深さで落ち込ませた凹溝とを
設けたから、汚水桝の底部において、汚水流路を形成す
るのに必要な全ての用件を備えている。従って、汚水桝
成形の際の型として用いると共に、汚水桝の汚水流路を
形成する構成部材として、桝本体の一部として残し、い
わゆる捨型として使用できる。このため、合成樹脂成形
体による流路を有し、耐薬品性、止水性、平滑性に優れ
た軽量の汚水桝が得られる。Moreover, on the inner surface of the bottom portion of the synthetic resin molded body having the bottom portion and the outer wall portion raised along the outer peripheral edge thereof,
Since the step surface and the recessed groove which is made to fall from the step surface to a predetermined depth are provided, all the requirements for forming the waste water flow path are provided at the bottom of the waste water basin. Therefore, it can be used as a mold at the time of forming a sewage basin, and can be used as a so-called mould, leaving a part of the sewage basin body as a constituent member for forming a sewage channel of the sewage basin. Therefore, it is possible to obtain a lightweight sewage basin having a flow path made of a synthetic resin molded body and having excellent chemical resistance, water resistance, and smoothness.
【0007】更に、各段面の表面は、底部の中心点の付
近または中心点よりは放流側に寄せた位置であって、凹
溝内に設定した基準点に向かって連続して下降傾斜し、
しかも、同一面上に乗る平面状の傾斜面となっているか
ら、汚水桝を成形する際に、受型の上に被せて用いる場
合、受型の受面を段面の傾斜に合せておくことにより、
凹溝の位置に無関係に段面を受面に接合させ、所定の形
状の汚水桝が正確に成形できる。Further, the surface of each step is located near the center point of the bottom or at a position closer to the discharge side than the center point, and continuously descends toward the reference point set in the groove. ,
Moreover, since it is a flat inclined surface that rides on the same surface, when using it by covering it over the receiving mold when molding the sewage basin, the receiving surface of the receiving mold should be adjusted to the slope of the step surface. By
The stepped surface is joined to the receiving surface irrespective of the position of the concave groove, and the sewage basin having a predetermined shape can be accurately formed.
【0008】[0008]
【実施例】図1は本発明に係る汚水桝用インバート型の
斜視図、図2はその平面図である。図において、汚水桝
用インバート型1は全体が肉厚2〜10mm程度の合成樹
脂成形体で形成されていて、底部2の外周縁に沿って適
当な高さの外壁部3を筒状に立ち上げた円形の有底リン
グ状となっている。底部2の内面には段面21と、この
段面21から適当な深さで落ち込む半円形状の凹溝2
2、23を設けると共に、凹溝22、23の端部を、外
壁部3に貫通して設けた円形状の開口部24、25、2
6に連通させてある。31は外壁部3の外周に沿って設
けたつば部である。DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a perspective view of an invert type for sewage basins according to the present invention, and FIG. 2 is a plan view thereof. In the figure, the sewage basin invert die 1 is entirely formed of a synthetic resin molded body having a wall thickness of about 2 to 10 mm, and an outer wall portion 3 having an appropriate height is formed in a cylindrical shape along the outer peripheral edge of the bottom portion 2. It has a rounded bottomed ring shape. A step surface 21 is formed on the inner surface of the bottom portion 2, and a semi-circular concave groove 2 that drops from the step surface 21 at an appropriate depth.
2, 23, and circular openings 24, 25, 2 provided by penetrating the outer wall 3 with the ends of the concave grooves 22, 23.
It is connected to 6. Reference numeral 31 is a brim portion provided along the outer periphery of the outer wall portion 3.
【0009】底部2の内面の段面21は、底部2の中心
点Oから汚水の放流側の開口部25側に寄せた位置に設
定した基準点A(図2参照)に向かって同心円状に連続
して下降傾斜させてある。4は段面21の表面上におい
て、基準点Aを中心とする同心円状の等高線であって、
段面21が基準点Aに向かって連続して下降傾斜してい
る状態を示す。The step surface 21 on the inner surface of the bottom portion 2 is formed in a concentric pattern from a center point O of the bottom portion 2 toward a reference point A (see FIG. 2) set at a position closer to the opening 25 side on the discharge side of waste water. It is continuously inclined downward. 4 is a concentric contour line centered on the reference point A on the surface of the step surface 21,
It shows a state in which the step surface 21 is continuously inclined downward toward the reference point A.
【0010】図3は本発明に係る汚水桝用インバート型
の別の実施例における平面図である。この実施例では、
基準点Aを底部2の中心部Oの付近に設定し、段面21
がこの基準点Aを中心にして同心円状の等高線4を描き
ながら下降傾斜するように形成してある。FIG. 3 is a plan view of another embodiment of the invert type for a waste water stub according to the present invention. In this example,
The reference point A is set near the center O of the bottom 2 and the step surface 21
Is formed so as to descend and incline while drawing a concentric circular contour line 4 around the reference point A.
【0011】図4は本発明に係る汚水桝用インバート型
の更に別の実施例における平面図である。この実施例の
場合は、等高線4が両外周側で直線状になるように形成
してある。FIG. 4 is a plan view of still another embodiment of the invert type for a wastewater basin according to the present invention. In the case of this embodiment, the contour lines 4 are formed to be linear on both outer peripheral sides.
【0012】図5は本発明に係る汚水桝用インバート型
1を用いて汚水桝を成形する方法を示す図で、内部にア
ングル等の支持部材6を取付けた筒状の内型枠5を床に
設置しておき、支持部材6の上に受型7を乗せ、受型7
の上に伏せた状態で、汚水桝用インバート型1を被せ
る。内型枠5の外側にはコンクリート等の成形材を注入
充填する環状空間が生じるように、筒状の外型枠8を同
軸状に配置する。そして、矢印cで示すように、上方か
らコンクリートを一点鎖線Dの位置まで流し込み、か
つ、固化させる。この後、型抜きすることにより、本発
明に係る汚水桝用インバート型1を構成部分として一体
化し、かつ、内型枠5及び外型枠8の形状によって定ま
る形状を持つ汚水桝が成形される。従って、汚水桝用イ
ンバート型1は捨型となってコンクリート製の汚水桝の
一部を構成することになる。FIG. 5 is a view showing a method for forming a wastewater stub by using the invert mold 1 for a sewage stub according to the present invention, in which a tubular inner formwork 5 having a support member 6 such as an angle attached therein is floored. Installed on the support member 6, and the receiving mold 7 is placed on the supporting member 6 to
Cover with the invert type 1 for sewage basin while lying down. A cylindrical outer mold 8 is coaxially arranged so that an annular space for injecting and filling a molding material such as concrete is formed outside the inner mold 5. Then, as shown by the arrow c, the concrete is poured from above to the position of the alternate long and short dash line D and solidified. Thereafter, by removing the mold, a sewage basin according to the present invention is integrated as a constituent part, and a sewage basin having a shape determined by the shapes of the inner mold 5 and the outer mold 8 is formed. . Therefore, the sewage stub invert mold 1 becomes a waste mold and constitutes a part of the concrete sewage stub.
【0013】図6は受型7の平面図、図7は図6EーE
線上断面図である。この受型7は図1及び図2に示した
インバート型に適合するもので、点A1 は図2に示す汚
水桝用インバート型1の基準点Aに対応する点である。
受型7の受面は点A1 に向かって同心円状に連続して上
昇傾斜させて形成してある。従って、基準点Aと点A1
を重ね合わせることによって、汚水桝用インバート型1
と受型7とは隙間なく重なり合う。このため、凹溝2
2、23の位置が異なる汚水桝用インバート型であって
も、汚水桝用インバート型1が傾いたりすることなく確
実に重なるようになる。FIG. 6 is a plan view of the receiving mold 7, and FIG. 7 is FIG.
It is sectional drawing on a line. The receiving mold 7 is suitable for the invert type shown in FIGS. 1 and 2, and the point A1 is a point corresponding to the reference point A of the invert type 1 for sewage basins shown in FIG.
The receiving surface of the receiving die 7 is formed by concentrically continuously rising and inclining toward the point A1. Therefore, the reference point A and the point A1
Invert type 1 for sewage basin by overlapping
And the receiving mold 7 overlap each other without a gap. Therefore, the groove 2
Even if the sewage stub invert type having the positions 2 and 23 different from each other, the sewage stub inversion type 1 is surely overlapped without tilting.
【0014】図8は本発明の汚水桝用インバート型1を
用いて成形した汚水桝の断面図である。桝本体9はコン
クリートでなり、桝底部10、桝外壁部11を有する有
底筒状となっており、桝底部10の内側表面上には本発
明の汚水桝用インバート型1が一体的にインサート成型
されている。FIG. 8 is a sectional view of a sewage basin molded using the sewage basin invert mold 1 of the present invention. The cell body 9 is made of concrete and has a cylindrical shape with a bottom having a cell bottom portion 10 and a cell outer wall portion 11. On the inner surface of the cell bottom portion 10, the invert type 1 for sewage vessel of the present invention is integrally inserted. It is molded.
【0015】[0015]
【発明の効果】以上述べたように、本発明によれば次の
ような効果が得られる。 (a)合成樹脂成形体からなるので、軽量で、成形作業
及び持ち運びが容易であり、成形性の良好な汚水桝用イ
ンバート型が提供できる。 (b)底部とその外周縁に沿って立ち上げた外壁部とを
有する合成樹脂成形体とし、底部に汚水を流すための流
路となる凹溝を設けてあるので、汚水桝成形の際に型と
して用いると共に、汚水桝の構成部材として桝本体に残
す、いわゆる捨型として利用できる。このため汚水が合
成樹脂からなる流路を流れることになるので、耐薬品
性、止水性、平滑性に優れた軽量の汚水桝を製作するの
に好適な汚水桝用インバート型を提供できる。 (c)各段面の表面は、底部の中心点の付近または中心
点よりは放流側に寄せた位置であって、凹溝内に設定し
た基準点に向かって連続して下降傾斜し、しかも、同一
面上に乗る平面状の傾斜面となっているから、汚水桝を
成形する際に、凹溝の位置に無関係に段面を受面に適合
させ、所定の形状の汚水桝が正確に成形できる。As described above, according to the present invention, the following effects can be obtained. (A) Since it is made of a synthetic resin molded product, it is possible to provide an invert type for a sewage basin which is lightweight, easy to mold and carry, and has good moldability. (B) Since a synthetic resin molded body having a bottom portion and an outer wall portion raised along the outer peripheral edge thereof is provided, and a concave groove serving as a flow path for flowing sewage is provided in the bottom portion, when forming a sewage basin. It can be used not only as a mold but also as a so-called waste mold, which is left as a constituent member of a sewage basin in a basin body. For this reason, since the sewage flows through the flow path made of synthetic resin, it is possible to provide an invert type for a sewage stub suitable for manufacturing a lightweight sewage stub having excellent chemical resistance, water-stopping property and smoothness. (C) The surface of each step is near the center point of the bottom or at a position closer to the discharge side than the center point, and continuously descends and slopes toward the reference point set in the groove, and , Since it is a flat inclined surface that rides on the same surface, when molding a sewage basin, the step surface is adapted to the receiving surface regardless of the position of the concave groove, and the sewage basin of a predetermined shape can be accurately Can be molded.
【図1】本発明に係る汚水桝用インバート型の斜視図で
ある。FIG. 1 is a perspective view of an invert type for a sewage basin according to the present invention.
【図2】本発明に係る汚水桝用インバート型の平面図で
ある。FIG. 2 is a plan view of an invert type for a sewage basin according to the present invention.
【図3】本発明に係る汚水桝用インバート型の別の実施
例における平面図である。FIG. 3 is a plan view of another example of the invert type for a wastewater sac according to the present invention.
【図4】本発明に係る汚水桝用インバート型の更に別の
実施例における平面図である。FIG. 4 is a plan view of still another embodiment of the invert type for sewage basins according to the present invention.
【図5】本発明に係る汚水桝用インバート型を用いて汚
水桝を成形する方法を示す図である。FIG. 5 is a diagram showing a method for forming a wastewater stub by using the invert mold for the sewage basin according to the present invention.
【図6】受型の平面図である。FIG. 6 is a plan view of a receiving mold.
【図7】図6EーE線上における断面図である。FIG. 7 is a cross-sectional view taken along the line EE of FIG.
【図8】本発明に係る汚水桝用インバート型を用いて成
形された汚水桝の断面図である。FIG. 8 is a cross-sectional view of a sewage basin formed by using the sewage basin invert mold according to the present invention.
1 汚水桝用インバート型 21 段面 22 凹溝 4 等高線 1 Invert type for sewage basin 21 Step surface 22 Recessed groove 4 Contour line
Claims (1)
壁部とを有する合成樹脂成形体から成り、前記外壁部に
よって囲まれた前記底部の内面は、段面と前記段面から
所定の深さで落ち込む凹溝とを含んでおり、前記凹溝
は、外部に開口する流入口及び放流口を有しており、前
記段面は、前記凹溝によって複数に区画されていて、各
段面の表面は、前記底部の中心点の付近または前記中心
点よりは放流側に寄せた位置であって、前記凹溝内に設
定した基準点に向かって連続して下降傾斜し、しかも、
同一面上に乗る平面状の傾斜面となっていることを特徴
とする汚水桝用インバート型。1. An inner surface of the bottom portion surrounded by the outer wall portion is formed of a synthetic resin molded body having a bottom portion and an outer wall portion rising along an outer peripheral edge of the bottom portion, and a step surface and a predetermined depth from the step surface. The concave groove has a flow-in opening and an outlet opening to the outside, the step surface is divided into a plurality of by the concave groove, The surface is in the vicinity of the center point of the bottom or at a position closer to the discharge side than the center point, and is continuously inclined downward toward a reference point set in the groove, and
Invert type for sewage basins, which has a flat inclined surface that rides on the same surface.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3089448A JP2553254B2 (en) | 1991-03-28 | 1991-03-28 | Invert type for sewage basins |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3089448A JP2553254B2 (en) | 1991-03-28 | 1991-03-28 | Invert type for sewage basins |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH04221135A JPH04221135A (en) | 1992-08-11 |
JP2553254B2 true JP2553254B2 (en) | 1996-11-13 |
Family
ID=13970968
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3089448A Expired - Lifetime JP2553254B2 (en) | 1991-03-28 | 1991-03-28 | Invert type for sewage basins |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2553254B2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2588128B2 (en) * | 1994-01-31 | 1997-03-05 | 旭コンクリート株式会社 | Method of forming pre-swiveling manhole pump station |
-
1991
- 1991-03-28 JP JP3089448A patent/JP2553254B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH04221135A (en) | 1992-08-11 |
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