JP6798807B2 - Air vent drainage pipe cover and rainwater drainage system - Google Patents
Air vent drainage pipe cover and rainwater drainage system Download PDFInfo
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- JP6798807B2 JP6798807B2 JP2016132270A JP2016132270A JP6798807B2 JP 6798807 B2 JP6798807 B2 JP 6798807B2 JP 2016132270 A JP2016132270 A JP 2016132270A JP 2016132270 A JP2016132270 A JP 2016132270A JP 6798807 B2 JP6798807 B2 JP 6798807B2
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本発明は、雨水を効率よく排水するために用いられる空気抜き排水管カバー及び雨水排水システムに関するものである。 The present invention relates to an air vent drainage pipe cover and a rainwater drainage system used for efficiently draining rainwater.
従来、住宅などには屋根から流れ落ちる雨水を受ける軒樋と、集水器や呼び樋を介して軒樋に接続され軒樋に集められた雨水を排水する竪樋を備えた雨樋システムが設置されている。このような雨樋システムにおいては住宅などの外観を損なうことがないように、設置される竪樋の本数を減少させる必要がある。従って１本の竪樋の単位時間当たりの排水量を増加させ、大雨時においても大量の雨水を効率よく排水することができる高排水の雨水排水システムが用いられている（例えば特許文献1参照）。 Conventionally, a rain gutter system equipped with an eaves gutter that receives rainwater flowing down from the roof and a gutter that is connected to the eaves gutter via a water collector or a gutter and drains the rainwater collected in the eaves gutter has been installed. Has been done. In such a rain gutter system, it is necessary to reduce the number of gutters to be installed so as not to spoil the appearance of the house or the like. Therefore, a high-drainage rainwater drainage system is used that can increase the amount of drainage per unit time of one gutter and efficiently drain a large amount of rainwater even during heavy rain (see, for example, Patent Document 1).
しかしながら、上述の高排水の雨水排水システムにおいては、１本の竪樋から地中に埋設されている横引き管内に流れ込む水量が増大するため竪樋と横引き管を接続する曲管内で乱流が発生し、曲管内や横引き管内に空気溜まりができる。このような場合空気溜まりにより曲管内や横引き管内の流路面積が小さくなることから雨水が流れにくくなり排水管カバーから雨水が噴出することがあった。 However, in the above-mentioned high-drainage rainwater drainage system, the amount of water flowing from one gutter into the horizontal pull pipe buried in the ground increases, so that turbulence flows in the curved pipe connecting the vertical pipe and the horizontal pull pipe. Is generated, and air pools are formed in the curved pipe and the horizontal drainage pipe. In such a case, since the flow path area in the curved pipe or the horizontal pulling pipe becomes small due to the air pool, rainwater may not flow easily and rainwater may be ejected from the drain pipe cover.
本発明の目的は、排水管内の空気溜まりの空気を排出することにより雨水の排水能力を向上させる空気抜き排水管カバー及び雨水排水システムを提供することである。 An object of the present invention is to provide an air vent drainage pipe cover and a rainwater drainage system that improve the drainage capacity of rainwater by discharging the air in the air pool in the drainage pipe.
本発明の空気抜き排水管カバーは、竪樋の下部に接続される筒状の上側接続部と、前記上側接続部の下方に設けられ下端部が曲管の上端部に接続される筒状の下側接続部と、を備え、前記下側接続部は筒状の周壁部を有し、前記上側接続部は前記周壁部の周囲を覆う筒状のカバー部を有し、前記周壁部及び前記カバー部により形成される、前記上側接続部の筒状内部及び前記下側接続部の筒所内部により構成される平常時に雨水が流下する雨水流路から前記雨水流路外に空気を導出する空気導出路、及び前記空気導出路により導出された空気を前記カバー部の下部から排出する空気排出路を備える。 The air vent drainage pipe cover of the present invention has a tubular upper connection portion connected to the lower part of the downspout and a tubular lower portion provided below the upper connection portion and the lower end portion is connected to the upper end portion of the curved pipe. The lower connection portion has a tubular peripheral wall portion, and the upper connection portion has a tubular cover portion that covers the periphery of the peripheral wall portion, and the peripheral wall portion and the cover portion. Air derivation that draws air out of the rainwater flow path from the rainwater flow path through which rainwater flows in normal times, which is formed by the inside of the tubular part of the upper connection part and the inside of the tubular part of the lower connection part. It is provided with an air discharge path for discharging the air led out by the path and the air lead-out path from the lower part of the cover portion.
また本発明の空気抜き排水管カバーは、前記空気導出路及び前記空気排出路が前記周壁部の周上に上下方向に延びる通路として隣り合って形成されていてもよい。 Further, the air vent drainage pipe cover of the present invention may be formed so as to be adjacent to each other as a passage in which the air outlet path and the air discharge path extend in the vertical direction on the periphery of the peripheral wall portion.
また本発明の空気抜き排水管カバーは、前記周壁部の大径部の内壁に上下方向に延びる空気導出溝と、前記周壁部の小径部の外壁に上下方向に延びる空気排出溝とを備え、前記上側接続部は、前記下側接続部の前記周壁部内に嵌入され、前記空気導出路は、前記上側接続部の下部により前記空気導出溝の上部を内側から覆うことにより形成され、前記空気排出路は、前記空気排出溝を前記カバー部の内壁により外側から覆うことにより形成されていてもよい。 Further, the air vent drainage pipe cover of the present invention includes an air lead-out groove extending in the vertical direction on the inner wall of the large diameter portion of the peripheral wall portion and an air discharge groove extending in the vertical direction on the outer wall of the small diameter portion of the peripheral wall portion. The upper connection portion is fitted into the peripheral wall portion of the lower connection portion, and the air lead-out path is formed by covering the upper part of the air lead-out groove from the inside by the lower portion of the upper connection portion, and the air discharge path. May be formed by covering the air discharge groove from the outside with an inner wall of the cover portion.
また本発明の空気抜き排水管カバーは、前記下側接続部が立上げ管を介して前記曲管の一方の端部に接続されていてもよい。 Further, in the air vent drainage pipe cover of the present invention, the lower connecting portion may be connected to one end of the curved pipe via a riser pipe.
また本発明の雨水排水システムは、サイホン作用を利用した高排水雨樋と、前記高排水雨樋を構成する竪樋の下部に本発明の空気抜き排水管カバーを備えていてもよい。 Further, the rainwater drainage system of the present invention may be provided with the high drainage rain gutter utilizing the siphon action and the air vent drainage pipe cover of the present invention under the vertical gutter constituting the high drainage gutter.
また本発明の雨水排水システムは、前記曲管の他方の端部に接続される横引き管と、前記横引き管に設けられる雨水桝及びトラップ桝とを備え、前記雨水桝及び前記トラップ桝の少なくとも一方は、前記横引き管内の空気溜まりの空気を排出する圧力開放蓋を備えていてもよい。 Further, the rainwater drainage system of the present invention includes a horizontal pulling pipe connected to the other end of the curved pipe, a rainwater basin and a trap basin provided in the horizontal pulling pipe, and the rainwater basin and the trap basin. At least one of them may be provided with a pressure release lid for discharging the air in the air pool in the horizontal pulling pipe.
本発明によれば、排水管内の空気溜まりの空気を排出することにより雨水の排水能力を向上させる空気抜き排水管カバー及び雨水排水システムを提供することができる。 According to the present invention, it is possible to provide an air vent drainage pipe cover and a rainwater drainage system that improve the drainage capacity of rainwater by discharging the air in the air pool in the drainage pipe.
以下、図面を参照して本発明の実施の形態に係る空気抜き排水管カバー及び雨水排水システムについて説明する。図１は実施の形態に係る雨水排水システムの全体構成を示す図である。図１に示すように雨水排水システム２は、軒樋４に集められた雨水を竪樋６を介して横引き管８に流出させるように構成されている。即ち、雨水排水システム２は、屋根の軒先に取り付けられた軒樋４と、上端部が集水器５（図２参照）を介して軒樋４に接続された竪樋６と、竪樋６の下端部が上端部に接続された空気抜き排水管カバー１０と、空気抜き排水管カバー１０の下端部に上端部が接続された立上げ管１２と、立上げ管１２の下端部に一方の端部が接続された曲管１４と、曲管１４の他方の端部に接続された横引き管８と、横引き管８に設けられている雨水桝１８、トラップ桝２０及び合流桝２２と、竪樋６の上下方向の中間部に設けられたオーバーフローソケット２６を備えている。ここで合流桝１８は、下流側に接続される接続管２４を介して下水本管Ｐに接続されている。なおオーバーフローソケット２６は、空気抜き排水管カバー１０や雨水桝１８などが冠水して竪樋６内の雨水を排水できない場合に竪樋６から雨水を逃がす機能を有している。 Hereinafter, the air vent drainage pipe cover and the rainwater drainage system according to the embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing an overall configuration of a rainwater drainage system according to an embodiment. As shown in FIG. 1, the rainwater drainage system 2 is configured to allow rainwater collected in the eaves gutter 4 to flow out to the horizontal pulling pipe 8 via the gutter 6. That is, the rainwater drainage system 2 includes an eaves gutter 4 attached to the eaves of the roof, a gutter 6 whose upper end is connected to the eaves gutter 4 via a water collector 5 (see FIG. 2), and a gutter 6. The air vent drainage pipe cover 10 whose lower end is connected to the upper end, the riser pipe 12 whose upper end is connected to the lower end of the air vent drainage pipe cover 10, and one end to the lower end of the riser pipe 12. A curved pipe 14 to which is connected, a horizontal pulling pipe 8 connected to the other end of the curved pipe 14, a rainwater basin 18, a trap basin 20, a merging basin 22 provided in the horizontal pulling pipe 8, and a gutter. An overflow socket 26 provided at an intermediate portion in the vertical direction of the gutter 6 is provided. Here, the merging basin 18 is connected to the sewage main pipe P via a connecting pipe 24 connected to the downstream side. The overflow socket 26 has a function of allowing rainwater to escape from the gutter 6 when the air vent drainage pipe cover 10 or the rainwater basin 18 is flooded and the rainwater in the gutter 6 cannot be drained.
竪樋６は、硬質塩化ビニル樹脂等により形成された円筒状の管部材であり、図２に示すように上端部が軒樋４に設けられた落し口３２が形成された集水器５に接続され、住宅などの外壁に、外壁から所定間隔をあけて上下方向に配設されている。また軒樋４及び竪樋６は、大雨時に軒樋４内に流入した雨水の排水能力を向上させるために、サイホン作用を利用した高排水機構を備えている。 The downspout 6 is a cylindrical pipe member formed of a hard vinyl chloride resin or the like, and as shown in FIG. 2, the water collector 5 having a drop port 32 having an upper end portion provided in the eaves gutter 4 is formed. It is connected and is arranged vertically on the outer wall of a house or the like at a predetermined interval from the outer wall. Further, the eaves gutter 4 and the vertical gutter 6 are provided with a high drainage mechanism utilizing a siphon action in order to improve the drainage capacity of rainwater flowing into the eaves gutter 4 during heavy rain.
図２及び図３に示すようにサイホン作用を利用した高排水機構を備える高排水雨樋は、軒樋２内の底部に軒樋２の延在方向に沿って配設された吸水管２８と、竪樋６内に配設された負圧誘発管３０と、集水器５に形成された落し口３２において上端部が吸水管２８の一方の端部に接続され下端部が負圧誘発管３０の上端部に接続される継手３４を備えて構成されている。吸水管２８、負圧誘発管３０及び継手３４は、例えばポリカーボネート、ポリ塩化ビニル、ポリオレフィンなどの熱可塑性合成樹脂を用い押出成形や射出成形によって形成されている。吸水管２８と負圧誘発管３０は、例えば３５〜６０ｍｍの外径を有している。 As shown in FIGS. 2 and 3, the high drainage gutter provided with the high drainage mechanism utilizing the siphon action has a water absorption pipe 28 arranged at the bottom of the eaves gutter 2 along the extending direction of the eaves gutter 2. , The upper end of the negative pressure inducing pipe 30 arranged in the downspout 6 and the drop port 32 formed in the water collector 5 is connected to one end of the water absorption pipe 28, and the lower end is the negative pressure inducing pipe. It is configured to include a joint 34 connected to the upper end of the 30. The water absorption pipe 28, the negative pressure induction pipe 30, and the joint 34 are formed by extrusion molding or injection molding using, for example, a thermoplastic synthetic resin such as polycarbonate, polyvinyl chloride, or polyolefin. The water absorption pipe 28 and the negative pressure induction pipe 30 have an outer diameter of, for example, 35 to 60 mm.
図３に示すように吸水管２８は両端が開口した筒状体であり、集水器５と反対側の開口部２８ａの近傍に複数の吸水孔２８ｂを有している。この吸水孔２８ｂは吸水管２８の径方向からも雨水を取り込めるように設けられた貫通孔である。 As shown in FIG. 3, the water absorption pipe 28 is a tubular body having both ends open, and has a plurality of water absorption holes 28b in the vicinity of the opening 28a on the opposite side of the water collector 5. The water absorption hole 28b is a through hole provided so that rainwater can be taken in from the radial direction of the water absorption pipe 28.
負圧誘発管３０は、例えば６０〜１００ｍｍの外径を有する竪樋６内に挿入され、負圧誘発管３０の外面と竪樋６の内面との間に隙間をあけて配設されている。負圧誘発管３０は、竪樋４と略同等の長さで形成され下端部が空気抜き排水管カバー１０内に位置するように配設されている。また負圧誘発管３０は、軒樋４内の雨水を引っ張って自然落下よりも高速で排水させるための負圧を誘発する負圧誘発部３０ａを備えている。負圧誘発部３０ａは、吸水管２８から流入した雨水が流れる管内流路の一部の流路面積が負圧誘発管３０の他の部分よりも小さくなるように、負圧誘発管３０を絞って形成されている。なお負圧誘発部３０ａは、軒樋４の落し口３２から例えば１ｍ以上、下方の位置に形成することが好ましい。 The negative pressure induction tube 30 is inserted into a gutter 6 having an outer diameter of, for example, 60 to 100 mm, and is arranged with a gap between the outer surface of the negative pressure induction tube 30 and the inner surface of the gutter 6. .. The negative pressure induction pipe 30 is formed to have substantially the same length as the downspout 4, and is arranged so that the lower end portion is located inside the air vent drainage pipe cover 10. Further, the negative pressure inducing pipe 30 includes a negative pressure inducing portion 30a for inducing a negative pressure for pulling rainwater in the eaves gutter 4 and draining it at a speed higher than that of free fall. The negative pressure inducing unit 30a narrows the negative pressure inducing pipe 30 so that the area of a part of the in-pipe flow path through which the rainwater flowing from the water absorption pipe 28 flows is smaller than the other part of the negative pressure inducing pipe 30. Is formed. The negative pressure inducing portion 30a is preferably formed at a position below, for example, 1 m or more from the drop opening 32 of the eaves gutter 4.
図４は空気抜き排水管カバーの下方向からの斜視図である。空気抜き排水管カバー１０は、竪樋６に接続される筒状の上側接続部４０と、上側接続部４０の下方に設けられ立上げ管１２の上端部に接続される筒状の下側接続部６０を備えている。 FIG. 4 is a perspective view from below of the air vent drainage pipe cover. The air vent drainage pipe cover 10 has a tubular upper connecting portion 40 connected to the downspout 6 and a tubular lower connecting portion provided below the upper connecting portion 40 and connected to the upper end of the riser pipe 12. It has 60.
図５は空気抜き排水管カバーの上側接続部のカバー部の図示を省略した斜視図であり、図６は上側接続部の縦断面図である。上側接続部４０は、カバー部４４と、上側接続壁部４６とを備えている。上側接続壁部４６は、竪樋６の下部が挿入される開口４２を有する管体部４８と、管体部４８の下端に環状方向に等間隔で形成された上側流路制御板５０を備えている。ここで上側流路制御板５０は、所定の幅を有し管体部４８の下端から下方向に延びる板状の部材である。 FIG. 5 is a perspective view in which the cover portion of the upper connection portion of the air vent drainage pipe cover is omitted, and FIG. 6 is a vertical cross-sectional view of the upper connection portion. The upper connecting portion 40 includes a cover portion 44 and an upper connecting wall portion 46. The upper connection wall portion 46 includes a pipe body portion 48 having an opening 42 into which the lower portion of the downspout 6 is inserted, and an upper flow path control plate 50 formed at the lower end of the pipe body portion 48 at equal intervals in the annular direction. ing. Here, the upper flow path control plate 50 is a plate-shaped member having a predetermined width and extending downward from the lower end of the tubular body portion 48.
カバー部４４は、開口４２の縁部から斜め下方向に拡径する第一拡径部４４ａと、第一拡径部４４ａの下端に接続される第一円筒部４４ｂと、第一円筒部４４ｂの下端から斜め下方向に拡径する第二拡径部４４ｃと、第二拡径部４４ｃの下端に接続される第二円筒部４４ｄとを備えている。ここで第一円筒部４４ｂは、内壁が上側接続壁部４６の外壁に対して所定の間隔を有して形成されている。また第二円筒部４４ｄは、後述する下側接続部６０の差し口６４（図７参照）の上側の一部の外壁に対して所定の間隔を有して形成されている。 The cover portion 44 has a first diameter-expanded portion 44a whose diameter expands diagonally downward from the edge of the opening 42, a first cylindrical portion 44b connected to the lower end of the first diameter-expanded portion 44a, and a first cylindrical portion 44b. A second diameter-expanded portion 44c that expands the diameter diagonally downward from the lower end of the second diameter-expanded portion 44c, and a second cylindrical portion 44d that is connected to the lower end of the second diameter-expanded portion 44c. Here, the inner wall of the first cylindrical portion 44b is formed at a predetermined distance from the outer wall of the upper connecting wall portion 46. Further, the second cylindrical portion 44d is formed at a predetermined distance from a part of the outer wall on the upper side of the outlet 64 (see FIG. 7) of the lower connecting portion 60, which will be described later.
図７は下側接続部の斜視図である。下側接続部６０は上側接続壁部４６と接続される下側接続壁部６２と、立上げ管１２の上端部が接続される円筒形状の差し口６４とを備えている。周壁部を構成する下側接続壁部６２は周方向に空気導出溝６２ｃとして機能する大径部６２ａと、空気排出溝６２ｄとして機能する小径部６２ｂが交互に配置される円筒状の部材である。即ち下側接続壁部６２の円筒形状の内壁部に大径部６２ａとして形成されている上下方向に延びる溝が空気導出溝６２ｃとして機能し、下側接続壁部６２の円筒形状の外壁部に小径部６２ｂとして形成されている上下方向に延びる溝が空気排出溝６２ｄとして機能する。なお、大径部６２ａの外壁部の下部は、差し口６４の外壁部に接続され、空気導出溝６２ｃの下端部が下側接続壁部６２の外部に対して閉塞されている。 FIG. 7 is a perspective view of the lower connection portion. The lower connecting portion 60 includes a lower connecting wall portion 62 connected to the upper connecting wall portion 46 and a cylindrical outlet 64 to which the upper end portion of the riser pipe 12 is connected. The lower connecting wall portion 62 constituting the peripheral wall portion is a cylindrical member in which a large diameter portion 62a functioning as an air lead-out groove 62c and a small diameter portion 62b functioning as an air discharge groove 62d are alternately arranged in the circumferential direction. .. That is, the groove extending in the vertical direction formed as the large diameter portion 62a on the cylindrical inner wall portion of the lower connecting wall portion 62 functions as the air lead-out groove 62c, and forms on the cylindrical outer wall portion of the lower connecting wall portion 62. The groove extending in the vertical direction formed as the small diameter portion 62b functions as the air discharge groove 62d. The lower portion of the outer wall portion of the large diameter portion 62a is connected to the outer wall portion of the outlet 64, and the lower end portion of the air outlet groove 62c is closed with respect to the outside of the lower connecting wall portion 62.
下側接続壁部６２の小径部６２ｂの上端部には、下側流路制御板６６が設けられている。ここで下側流路制御板６６は、所定の幅を有し小径部６２ｂの上端から上方向に延びる板状の部材である。 A lower flow path control plate 66 is provided at the upper end of the small diameter portion 62b of the lower connection wall portion 62. Here, the lower flow path control plate 66 is a plate-shaped member having a predetermined width and extending upward from the upper end of the small diameter portion 62b.
図８は空気抜き排水管カバーのカバー部の図示を省略した斜視図であり、図９は空気抜き排水管カバーの下側接続部の上端部における横断面図である。空気抜き排水管カバー１０は、上側接続壁部４６の下部を下側接続壁部６２の円筒内の上部に嵌合させている。即ち上側接続壁部４６の管体部４８の下端に形成されている上側流路制御板５０が下側接続壁部６２の大径部６２ａに位置し空気導出溝６２ｃの上部を内側から覆うようにして上側接続壁部４６の下部を下側接続壁部６２の円筒内の上部に嵌合させている。この場合に下側接続壁部６２の円筒内に嵌合させた上側接続壁部４６の下部の外壁は、下側接続壁部６２の内壁に接着されている。なお、カバー部４４の内壁と、下側接続壁部６２の大径部６２ａの外壁とが接着されていても良い。 FIG. 8 is a perspective view of the cover portion of the air vent drainage pipe cover (not shown), and FIG. 9 is a cross-sectional view of the upper end portion of the lower connection portion of the air vent drainage pipe cover. In the air vent drainage pipe cover 10, the lower portion of the upper connecting wall portion 46 is fitted to the upper portion of the lower connecting wall portion 62 in the cylinder. That is, the upper flow path control plate 50 formed at the lower end of the tubular body portion 48 of the upper connecting wall portion 46 is located at the large diameter portion 62a of the lower connecting wall portion 62 and covers the upper part of the air outlet groove 62c from the inside. The lower part of the upper connecting wall portion 46 is fitted to the upper part of the lower connecting wall portion 62 in the cylinder. In this case, the lower outer wall of the upper connecting wall portion 46 fitted into the cylinder of the lower connecting wall portion 62 is adhered to the inner wall of the lower connecting wall portion 62. The inner wall of the cover portion 44 and the outer wall of the large diameter portion 62a of the lower connecting wall portion 62 may be adhered to each other.
下側流路制御板６６は、隣り合う上側流路制御板５０の間の空間を覆っている。従って空気抜き排水管カバー１０内には、上側接続壁部４６、上側流路制御板５０、下側流路制御板６６、下側接続壁部６２及び差し口６４により構成される雨水流路が形成される。 The lower flow path control plate 66 covers the space between the adjacent upper flow path control plates 50. Therefore, a rainwater flow path composed of an upper connection wall portion 46, an upper flow path control plate 50, a lower flow path control plate 66, a lower connection wall portion 62, and an outlet 64 is formed in the air vent drainage pipe cover 10. Will be done.
また空気導出溝６２ｃの下部は、下側接続壁部６２の円筒形状の内側に解放され、空気導出溝６２ｃの上部が上側流路制御板５０により内側から覆われおり、更に空気導出溝６２ｃの上部が下側接続壁部６２の円筒形状の外側に解放されていることから、空気導出溝６２ｃ及び上側流路制御板５０により、雨水流路から空気を雨水流路外に導出する空気導出路６３ａが形成される。 Further, the lower portion of the air outlet groove 62c is released inside the cylindrical shape of the lower connecting wall portion 62, the upper portion of the air outlet groove 62c is covered from the inside by the upper flow path control plate 50, and the air outlet groove 62c is further covered. Since the upper part is open to the outside of the cylindrical shape of the lower connecting wall portion 62, the air leading path for leading air from the rainwater channel to the outside of the rainwater channel by the air leading groove 62c and the upper flow path control plate 50. 63a is formed.
更に上側接続部４０のカバー部４４が下側接続壁部６２の全体を覆うように配置された際に、カバー部４４の内壁が下側接続壁部６２の大径部６２ａの外壁に近接して大径部６２ａと大径部６２ａとの間に位置する小径部６２ｂ、即ち空気導出溝６２ｃの外側を覆うと共にカバー部４４の下方に開口を形成する。従って空気排出溝６２ｄ及びカバー部４４により、空気導出路６３ａを介して雨水流路外に導出された空気を空気抜き排水管カバー１０の外に排出する空気排出路６３ｂが形成される。 Further, when the cover portion 44 of the upper connection portion 40 is arranged so as to cover the entire lower connection wall portion 62, the inner wall of the cover portion 44 approaches the outer wall of the large diameter portion 62a of the lower connection wall portion 62. It covers the outside of the small diameter portion 62b located between the large diameter portion 62a and the large diameter portion 62a, that is, the air outlet groove 62c, and forms an opening below the cover portion 44. Therefore, the air discharge groove 62d and the cover portion 44 form an air discharge path 63b for discharging the air led out to the outside of the rainwater flow path through the air lead-out path 63a to the outside of the air vent drainage pipe cover 10.
横引き管８は、所定の排水勾配を有して地中に埋設されている。横引き管８には、圧力開放蓋１８ａを備えた雨水桝１８、圧力開放蓋２０ａを備えたトラップ桝２０及び室内配管１６が接続される合流桝２２が設けられており、合流桝２２を介して下水本管Ｐに接続されている。室内配管１６は、建物内の床上に設置されている便器などの宅内排水設備５０を合流桝２２に接続している。 The horizontal pulling pipe 8 has a predetermined drainage gradient and is buried in the ground. The horizontal pulling pipe 8 is provided with a rainwater basin 18 having a pressure release lid 18a, a trap basin 20 having a pressure release lid 20a, and a merging basin 22 to which the indoor pipe 16 is connected, and is provided through the merging basin 22. It is connected to the sewage main pipe P. The indoor pipe 16 connects the in-house drainage facility 50 such as a toilet bowl installed on the floor in the building to the merging basin 22.
トラップ桝２０は、トラップ２１ａを介して雨水桝１８及び上流側の横引き管８にＴ字継手２１ｂにより連結されている。トラップ２１ａは谷状に湾曲する谷状ターン部を有し、上流側の横引き管８の管内を、汚水が流れる室内排水管１６から遮断する封水を溜めるように構成されている。雨水桝１８に設けられている圧力開放蓋１８ａ及びトラップ桝２０に設けられている圧力開放蓋２０ａは、雨水桝１８及びトラップ桝２０の上流側、又は下流側において所定の内圧が生じたときに蓋の一部が開いて圧力を開放し、圧力開放蓋１８ａ及び圧力開放蓋２０ａが雨水桝１８及びトラップ桝２０から外れるのを防止する。即ち圧力開放蓋１８ａ及び圧力開放蓋２０ａは、上下に貫通する通気孔が設けられた蓋本体と、蓋本体に被せられた弁体を備えており、雨水桝１８及びトラップ桝２０の内圧が高くなると、その内圧を受けて弁体が浮き上がり通気孔が開放され雨水桝１８及びトラップ桝２０内の空気が排出される。これにより圧力開放蓋１８ａ及び圧力開放蓋２０ａが雨水桝１８及びトラップ桝２０から外れるのを防止することができる。 The trap basin 20 is connected to the rainwater basin 18 and the horizontal pulling pipe 8 on the upstream side via the trap 21a by a T-shaped joint 21b. The trap 21a has a valley-shaped turn portion that curves in a valley shape, and is configured to collect sealing water that shuts off the inside of the horizontal pulling pipe 8 on the upstream side from the indoor drain pipe 16 through which sewage flows. The pressure release lid 18a provided on the rainwater basin 18 and the pressure release lid 20a provided on the trap basin 20 are used when a predetermined internal pressure is generated on the upstream side or the downstream side of the rainwater basin 18 and the trap basin 20. A part of the lid is opened to release the pressure, and the pressure release lid 18a and the pressure release lid 20a are prevented from coming off from the rainwater basin 18 and the trap basin 20. That is, the pressure release lid 18a and the pressure release lid 20a are provided with a lid body provided with ventilation holes penetrating vertically and a valve body covered with the lid body, and the internal pressure of the rainwater basin 18 and the trap basin 20 is high. Then, the valve body is lifted by the internal pressure, the ventilation holes are opened, and the air in the rainwater basin 18 and the trap basin 20 is discharged. As a result, it is possible to prevent the pressure release lid 18a and the pressure release lid 20a from coming off from the rainwater basin 18 and the trap basin 20.
次に本実施の形態に係る雨水排水システムによる雨水の排水について説明する。図２及び図３に示すように本実施の形態に係る雨水排水システム２は、サイホン作用を利用した高排水機構を備えているため、軒樋４に流入した雨水が竪樋６内を流れると共に開口部２８ａ及び吸水孔２８ｂから吸水管２８内に流入し、吸水管２８から負圧誘発管３０内を流れて排水される。大雨時に多量の雨水が吸水管２８から負圧誘発管３０内を流れると、流路面積を縮小している負圧誘発部３０ａの抵抗で乱流が生じ、負圧誘発部３０ａよりも上方に雨水の滞留が発生し吸水管２８及び負圧誘発管３０が雨水で満たされる。吸水管２８及び負圧誘発管３０が雨水で満たされ、負圧誘発部３０ａの抵抗力を上回る水圧が負圧誘発部３０ａに作用すると、滞留した雨水が急激に流下して負圧が発生する。これにより軒樋４内の雨水が負圧により引っ張られて開口部２８ａ及び吸水孔２８ｂから急激に吸い込まれ、自然落下よりも高速で竪樋６内の雨水を流下させることができる。 Next, the drainage of rainwater by the rainwater drainage system according to the present embodiment will be described. As shown in FIGS. 2 and 3, since the rainwater drainage system 2 according to the present embodiment has a high drainage mechanism utilizing a siphon action, rainwater flowing into the eaves gutter 4 flows in the gutter 6 as well. It flows into the water absorption pipe 28 through the opening 28a and the water absorption hole 28b, flows through the negative pressure induction pipe 30 from the water absorption pipe 28, and is drained. When a large amount of rainwater flows from the water absorption pipe 28 into the negative pressure inducing pipe 30 during heavy rain, turbulence is generated by the resistance of the negative pressure inducing part 30a that reduces the flow path area, and is above the negative pressure inducing part 30a. Rainwater stays and the water absorption pipe 28 and the negative pressure induction pipe 30 are filled with rainwater. When the water absorption pipe 28 and the negative pressure inducer pipe 30 are filled with rainwater and a water pressure exceeding the resistance of the negative pressure inducer 30a acts on the negative pressure inducer 30a, the accumulated rainwater suddenly flows down and a negative pressure is generated. .. As a result, the rainwater in the eaves gutter 4 is pulled by the negative pressure and is rapidly sucked in from the opening 28a and the water absorption hole 28b, so that the rainwater in the gutter 6 can flow down at a speed higher than that of free fall.
この雨水排水システムにおいては、竪樋６から空気抜き排水管カバー１０及び立上げ管１２を介して曲管１４に多量の雨水が流入することから、曲管１４内で乱流が発生し、排水管を構成する曲管１４内や横引き管８内に空気溜まりが生じる。このような場合、曲管１４内に生じた空気溜まりの空気は、立上げ管１２内を上昇し空気抜き排水管カバー１０の下側接続部６２の内部から空気導出路６３ａ及び空気排出路６３ｂを通って空気抜き排水管カバー１０の下部から空気抜き排水管カバー１０の外部に排出される。また横引き管８内に生じた空気溜まりの空気は、雨水桝１８に設けられている圧力開放蓋１８ａ及びトラップ桝２０に設けられている圧力開放蓋２０ａから排出される。 In this rainwater drainage system, a large amount of rainwater flows from the downspout 6 into the curved pipe 14 through the air vent drainage pipe cover 10 and the riser pipe 12, so that turbulent flow is generated in the curved pipe 14 and the drainage pipe is drained. An air pool is generated in the curved pipe 14 and the horizontal pulling pipe 8 constituting the above. In such a case, the air in the air pool generated in the curved pipe 14 rises in the riser pipe 12 and passes through the air outlet passage 63a and the air discharge passage 63b from the inside of the lower connection portion 62 of the air vent drainage pipe cover 10. It is discharged from the lower part of the air bleeding drainage pipe cover 10 to the outside of the air bleeding drainage pipe cover 10. Further, the air in the air pool generated in the horizontal pulling pipe 8 is discharged from the pressure release lid 18a provided in the rainwater basin 18 and the pressure release lid 20a provided in the trap basin 20.
従って、排水管を構成する曲管１４内や横引き管８内において発生した空気溜まりの空気を空気抜き排水管カバー１０や、雨水桝１８に設けられている圧力開放蓋１８ａ及びトラップ桝２０に設けられている圧力開放蓋２０ａから排出することができるため、曲管１４内や横引き管８内の流路面積の減少を抑制し、曲管１４内や横引き管８内を満管にして雨水を流すことができることから多量の雨水を良好に排水することができる。 Therefore, the air in the air pool generated in the curved pipe 14 and the horizontal pulling pipe 8 constituting the drain pipe is provided in the air vent drain pipe cover 10, the pressure release lid 18a provided in the rainwater basin 18, and the trap basin 20. Since it can be discharged from the pressure release lid 20a, the decrease in the flow path area in the curved pipe 14 and the horizontal pulling pipe 8 is suppressed, and the inside of the curved pipe 14 and the horizontal pulling pipe 8 is filled up. Since rainwater can flow, a large amount of rainwater can be drained satisfactorily.
また空気抜き排水管カバー１０の下部から下向きに空気を排出するため、空気と共に雨水が空気抜き排水管カバー１０から排出された場合においても、飛散した雨水により家屋の壁が汚れるのを防止することができる。 Further, since the air is discharged downward from the lower part of the air bleeding drainage pipe cover 10, even when rainwater is discharged from the air bleeding drainage pipe cover 10 together with the air, it is possible to prevent the wall of the house from being contaminated by the scattered rainwater. ..
なお上述の実施の形態に係る雨水排水システム２の高排水機構においては、吸水管２８及び負圧誘発管３０を備え、負圧誘発管３０に負圧誘発部３０ａを設けてサイホン作用を利用した高速排水を行っているが、吸水管２８及び負圧誘発管３０を用いない場合においてもサイホン作用を利用した高速排水を行うことができる。即ち立上げ管１２を空気抜き排水管カバー１０の差し口６４内に嵌入し、差し口６４の内壁と立上げ管１２の外壁とを液密となるように接着した場合には、立上げ管１２の上端部において雨水流路が縮径されるため、大雨の場合には立上げ管１２の上端部より上の排水管カバー１０、竪樋６内に雨水が溜まって満水状態になりサイホン作用が発生する。従ってサイホン作用を利用して軒樋４及び竪樋６内の雨水を高速で排水することができる。 In the high drainage mechanism of the rainwater drainage system 2 according to the above-described embodiment, the water absorption pipe 28 and the negative pressure induction pipe 30 are provided, and the negative pressure induction pipe 30 is provided with the negative pressure induction portion 30a to utilize the siphon action. Although high-speed drainage is performed, high-speed drainage using the siphon action can be performed even when the water absorption pipe 28 and the negative pressure induction pipe 30 are not used. That is, when the riser pipe 12 is fitted into the outlet 64 of the air vent drainage pipe cover 10 and the inner wall of the outlet 64 and the outer wall of the riser pipe 12 are adhered so as to be liquid-tight, the riser pipe 12 Since the diameter of the rainwater flow path is reduced at the upper end of the pipe, in the case of heavy rain, rainwater collects in the drain pipe cover 10 and the gutter 6 above the upper end of the riser pipe 12, and the siphon action is performed. appear. Therefore, the rainwater in the eaves gutter 4 and the gutter 6 can be drained at high speed by utilizing the siphon action.
また上述の実施の形態においては、円筒形状の竪樋６に用いられる上側接続部４０及び下側接続部６０が円筒形状を有する空気抜き排水管カバー１０について説明したが、角筒形状の竪樋に用いる場合には、上側接続部及び下側接続部が竪樋と同様な角筒形状を有する空気抜き排水管カバーを用いるなど、竪樋と同様な筒形状を有する上側接続部及び下側接続部により構成される空気抜き排水管カバーを用いる。 Further, in the above-described embodiment, the air vent drainage pipe cover 10 in which the upper connecting portion 40 and the lower connecting portion 60 used for the cylindrical gutter 6 have a cylindrical shape has been described, but the gutter has a square cylinder shape. When using, the upper connection part and the lower connection part having the same tubular shape as the gutter, such as using an air vent drainage pipe cover whose upper connection part and lower connection part have the same square tubular shape as the gutter, Use the constructed air vent drainage pipe cover.
また上述の実施の形態においては、雨水桝１８に圧力開放蓋１８ａを設けると共にトラップ桝２０に圧力開放蓋２０ａを設けているが、雨水桝１８及びトラップ桝２０のいずれか一方に圧力開放蓋を設けるようにしてもよい。 Further, in the above-described embodiment, the rainwater basin 18 is provided with the pressure release lid 18a and the trap basin 20 is provided with the pressure release lid 20a, but one of the rainwater basin 18 and the trap basin 20 is provided with the pressure release lid. It may be provided.
２…雨水排水システム、４…軒樋、６…竪樋、８…横引き管、１０…空気抜き排水管カバー、１４…曲管、１８…雨水桝、２０…トラップ桝、２２…合流桝、２８…吸水管、３０…負圧誘発管、３０ａ…負圧誘発部、４０…上側接続部、４４…カバー部、４６…上側接続壁部、４８…管体部、５０…上側流路制御板、６０…下側接続部、６２…下側接続壁部、６２ｃ…空気導出溝、６２ｄ…空気排出溝、６３ａ…空気導出路、６３ｂ…空気排出路、６６…下側流路制御板 2 ... Rainwater drainage system, 4 ... Eaves gutter, 6 ... Vertical gutter, 8 ... Horizontal pipe, 10 ... Air vent drainage pipe cover, 14 ... Curved pipe, 18 ... Rainwater basin, 20 ... Trap basin, 22 ... Confluence basin, 28 ... Water absorption pipe, 30 ... Negative pressure inducer pipe, 30a ... Negative pressure inducer, 40 ... Upper connection part, 44 ... Cover part, 46 ... Upper connection wall part, 48 ... Pipe body part, 50 ... Upper flow path control plate, 60 ... Lower connection part, 62 ... Lower connection wall part, 62c ... Air outlet groove, 62d ... Air exhaust groove, 63a ... Air outlet path, 63b ... Air exhaust path, 66 ... Lower flow path control plate
Claims (6)
前記上側接続部の下方に設けられ下端部が立上げ管を介して曲管の一方の端部に接続される筒状の下側接続部と、を備え、
前記下側接続部は筒状の周壁部を有し、
前記上側接続部は前記周壁部の周囲を覆う筒状のカバー部を有し、
前記周壁部及び前記カバー部により形成される、前記上側接続部の筒状内部及び前記下側接続部の筒所内部により構成される平常時に雨水が流下する雨水流路から前記雨水流路外に空気を導出する空気導出路、及び前記空気導出路により導出された空気を前記カバー部の下部から排出する空気排出路を備えることを特徴とする空気抜き排水管カバー。 A tubular upper connection that connects to the bottom of the gutter,
A tubular lower connection portion provided below the upper connection portion and having a lower end portion connected to one end of a curved pipe via a riser pipe is provided.
The lower connecting portion has a tubular peripheral wall portion and has a tubular peripheral wall portion.
The upper connection portion has a tubular cover portion that covers the periphery of the peripheral wall portion.
From the rainwater flow path to which rainwater flows down in normal times, which is formed by the peripheral wall portion and the tubular portion of the upper connection portion and the inside of the tubular portion of the lower connection portion, to the outside of the rainwater flow path. An air vent drainage pipe cover including an air lead-out path for leading out air and an air discharge path for discharging the air led out by the air lead-out path from the lower part of the cover portion.
前記周壁部の小径部の外壁に上下方向に延びる空気排出溝と
を備え、
前記上側接続部は、前記竪樋の下部が挿入される管体部と、前記管体部の下端に形成された上側流路制御板と、を備え、当該上側流路制御板が、前記下側接続部の前記周壁部内に嵌入され、
前記空気導出路は、前記上側接続部の下部により前記空気導出溝の上部を内側から覆うことにより形成され、
前記空気排出路は、前記空気排出溝を前記カバー部の内壁により外側から覆うことにより形成されること特徴とする請求項１または２記載の空気抜き排水管カバー。 The inner wall of the large diameter portion of the peripheral wall portion is provided with an air outlet groove extending in the vertical direction, and the outer wall of the small diameter portion of the peripheral wall portion is provided with an air discharge groove extending in the vertical direction.
The upper connection portion includes a pipe body portion into which the lower portion of the downspout is inserted and an upper flow path control plate formed at the lower end of the pipe body portion, and the upper flow path control plate is the lower portion. It is fitted into the peripheral wall portion of the side connection portion,
The air lead-out path is formed by covering the upper part of the air lead-out groove from the inside by the lower part of the upper connection portion.
The air vent drainage pipe cover according to claim 1 or 2, wherein the air exhaust passage is formed by covering the air exhaust groove from the outside with an inner wall of the cover portion.
前記高排水雨樋を構成する竪樋の下部に請求項１〜４の何れか一項に記載の空気抜き排水管カバーを備えることを特徴とする雨水排水システム。 A high drainage gutter that uses the siphon action,
A rainwater drainage system comprising the air vent drainage pipe cover according to any one of claims 1 to 4 below the downspout that constitutes the high drainage rain gutter.
前記横引き管に設けられる雨水桝及びトラップ桝と
を備え、
前記雨水桝及び前記トラップ桝の少なくとも一方は、前記横引き管内の空気溜まりの空気を排出する圧力開放蓋を備えることを特徴とする請求項５記載の雨水排水システム。 A horizontal pulling pipe connected to the other end of the curved pipe,
A rainwater basin and a trap basin provided in the horizontal pulling pipe are provided.
The rainwater drainage system according to claim 5 , wherein at least one of the rainwater basin and the trap basin is provided with a pressure opening lid for discharging the air of the air pool in the horizontal pulling pipe.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016132270A JP6798807B2 (en) | 2016-07-04 | 2016-07-04 | Air vent drainage pipe cover and rainwater drainage system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016132270A JP6798807B2 (en) | 2016-07-04 | 2016-07-04 | Air vent drainage pipe cover and rainwater drainage system |
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| US4798028A (en) * | 1987-11-30 | 1989-01-17 | Pinion John A | Downspout trap and clean out |
| JP2550741Y2 (en) * | 1990-07-05 | 1997-10-15 | 東洋化学株式会社 | Gutter drain pipe cover |
| JP4130595B2 (en) * | 2003-02-21 | 2008-08-06 | タキロン株式会社 | Siphon rainwater drainage system |
| JP5117041B2 (en) * | 2006-12-13 | 2013-01-09 | カネソウ株式会社 | Rain water spray prevention device in relay drain device |
| JP5699280B2 (en) * | 2011-03-17 | 2015-04-08 | パナソニックＩｐマネジメント株式会社 | 竪 樋 with antenna |
| JP2013002144A (en) * | 2011-06-16 | 2013-01-07 | Sekisui Chem Co Ltd | Rain gutter system |
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