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JP2009046828A - Dredge device with check valve - Google Patents

Dredge device with check valve
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Publication number
JP2009046828A
JP2009046828AJP2007211844AJP2007211844AJP2009046828AJP 2009046828 AJP2009046828 AJP 2009046828AJP 2007211844 AJP2007211844 AJP 2007211844AJP 2007211844 AJP2007211844 AJP 2007211844AJP 2009046828 AJP2009046828 AJP 2009046828A
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valve body
side connection
connection port
jig
valve
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JP2007211844A
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Japanese (ja)
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Tetsuji Yamazaki
哲司 山崎
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Maezawa Kasei Industries Co Ltd
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Maezawa Kasei Industries Co Ltd
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Abstract

Translated fromJapanese

【課題】逆流した排水が排水設備から噴き出すことを防止でき、弁体が破損した場合であっても弁体を容易に交換できる逆流防止弁体付き桝装置を提供する。
【解決手段】桝本体2に、流入側接続口4及び流出側接続口5を形成し、これら流入側接続口4と流出側接続口5とを接続するインバート部6及びこのインバート部6の上方に開口する掃除口7を形成する。この桝本体2の流入側接続口4のインバート部6側に弁体3を着脱自在に取付けて、桝本体2と弁体3とによって逆流防止弁体付き桝装置1を構成する。弁体3は、この弁体3を桝本体2の掃除口7または掃除口7に接続された立ち上がり管8に固定する円弧状で弾性変形可能な押さえ部14を備える。この押さえ部14に桝本体2の流入側接続口4を開閉可能に閉塞する弁部16を回動可能に取付ける。
【選択図】図1
There is provided a dredging device with a backflow prevention valve body that can prevent backflowed drainage from being discharged from a drainage facility and can easily replace the valve body even when the valve body is damaged.
An inflow portion and an outflow side connection port are formed in the main body, and an invert portion for connecting the inflow side connection port and the outflow side connection port, and an upper portion of the invert portion. A cleaning port 7 is formed to open. The valve body 3 is detachably attached to the invert portion 6 side of the inflow side connection port 4 of the main body 2, and the main body 2 and the valve body 3 constitute the back device 1 with the backflow prevention valve body. The valve body 3 includes an arcuate elastically deformable pressing portion 14 that fixes the valve body 3 to the cleaning port 7 of the bag main body 2 or the rising pipe 8 connected to the cleaning port 7. A valve portion 16 that closes the inflow side connection port 4 of the bag main body 2 so as to be openable and closable is rotatably attached to the pressing portion 14.
[Selection] Figure 1

Description

Translated fromJapanese

本発明は、逆流した排水が排水設備から噴き出すことを防止できるとともに、弁体が破損してしまった場合であっても容易に交換できる逆流防止弁体付き桝装置に関する。  The present invention relates to a dredging device with a backflow prevention valve body that can prevent backflowed wastewater from being ejected from a drainage facility and can be easily replaced even when the valve body is damaged.

一般に、家庭内の各排水設備から排出される排水は、排水設備に接続した排水枝管を経て宅地内に設置された宅地桝に流入し、この宅地桝から直接または他の宅地桝を経て一つの公共桝に合流し、最終的にこの公共桝から下水道本管へと排出されるようになっている。  In general, wastewater discharged from each drainage facility in the household flows into a residential land installed in the residential land through a drain branch pipe connected to the drainage facility, and is discharged directly from this residential land or through another residential land. It is merged into one public dredging and finally discharged from this public dredging to the sewer main.

近年、この下水道本管に流入する排水量が増大し、特に台風などで大量の雨水が下水道本管に流入すると、下水道本管の排水能力を超え、溢れ出る排水またはこの排水によって圧送された空気が公共桝を経て排水枝管を逆流し、各排水設備から排水または空気が建物内に噴き出す問題が生じている。  In recent years, the amount of wastewater flowing into this sewer main has increased, and in particular when a large amount of rainwater flows into the sewer main due to typhoons, the drainage capacity of the sewer main exceeds the drainage capacity of the sewer main, or the air pumped by this drainage. There is a problem that the drainage branch pipe flows backward through the public dredger, and drainage or air is blown out from the drainage facilities into the building.

そこで、従来、排水桝本体の流入側接続管を接続する流入側接続口の内側開口端近傍の内壁面部に、フック状の係合部を突設し、この係合部に流入側接続口の内端部をこの流入側接続口から排水桝本体内に流入する排水によって開放される弁体を回動可能に取付ける構造のものが知られている(例えば、特許文献1参照。)。  Therefore, conventionally, a hook-shaped engagement portion is provided on the inner wall surface near the inner opening end of the inflow side connection port for connecting the inflow side connection pipe of the drainage drainage main body, and the inflow side connection port is provided in this engagement portion. A structure in which an inner end portion is rotatably attached to a valve body that is opened by drainage flowing into the drainage drainage main body from the inflow side connection port (see, for example, Patent Document 1).

しかしながら、この特許文献1の従来の排水桝のように、合成樹脂にて射出成形した桝本体内部に弁体を開閉可能に支持するフック状の係合部を一体に突設することは成形上困難である。また、桝本体内部に形成されたフック状の係合部に弁体を開閉可能に取付ける構成では、既設の桝本体に弁体を取付けることができず、さらに、例えば逆流する排水や空気の圧力等によって弁体が破損してしまった場合に交換できないという問題がある。  However, as in the conventional drainage basin ofPatent Document 1, it is difficult to integrally form a hook-like engagement portion that supports the valve body so as to be openable and closable inside a casket body that is injection-molded with synthetic resin. Have difficulty. Further, in the configuration in which the valve body is detachably attached to the hook-shaped engagement portion formed inside the cocoon body, the valve body cannot be attached to the existing cocoon body, and further, for example, backflow drainage or air pressure There is a problem that it cannot be replaced if the valve body is damaged due to, for example.

また、従来、桝本体の流入側接続口の内径に略等しい外径を有する略円筒状の逆流防止装置本体を備え、この逆流防止本体には、流入側接続口から桝本体内に流入する排水によって開放される弁体と、逆流防止装置本体を桝本体内から差込接続する取付け装置の取付け部とが設けられ、既設の桝本体にも取付け可能であり、例えば逆流する排水や空気の圧力等により弁体が破損してしまった場合であっても交換可能である逆流防止装置が知られている。(例えば、特許文献2参照。)。  In addition, conventionally, it has been provided with a substantially cylindrical backflow prevention device body having an outer diameter substantially equal to the inside diameter of the inflow side connection port of the main body, and this backflow prevention body has a drainage that flows into the main body from the inflow side connection port. The valve body to be opened and the attachment part of the attachment device for inserting and connecting the backflow prevention device main body from the inside of the main body are provided and can be attached to the existing main body, for example, due to the backflow drainage or air pressure There is known a backflow prevention device that is replaceable even when the valve body is damaged. (For example, refer to Patent Document 2).

しかしながら、この特許文献2の従来の逆流防止装置では、取付ける際に、使用方法が複雑な取付け装置を使用する必要があり、取付け操作が複雑で容易に交換できない問題がある。
特開平10−195969号公報(第2−3頁、図4、図7)特開2006−283547号公報(第8−10頁、図1)
However, in the conventional backflow prevention device ofPatent Document 2, it is necessary to use a mounting device whose usage is complicated when mounting, and there is a problem that the mounting operation is complicated and cannot be easily replaced.
JP 10-195969 (page 2-3, FIG. 4, FIG. 7) JP 2006-283547 A (page 8-10, FIG. 1)

上述した従来の排水桝や逆流防止装置は、逆流した排水が排水設備から噴き出すことを防止できるものの、弁体が破損してしまった場合に、交換できないものや、交換可能であるが交換する際の取付け操作が複雑で容易に交換できないものであり、弁体が破損してしまった場合であっても容易に交換できるものが望まれていた。  Although the above-mentioned conventional drainage basin and backflow prevention device can prevent the backflowed wastewater from being ejected from the drainage facility, when the valve body is damaged, it can not be replaced, or it can be replaced, but when replacing Therefore, there has been a demand for a mechanism that can be easily replaced even when the valve body is damaged.

本発明はこのような点に鑑みなされたもので、逆流した排水が排水設備から噴き出すことを防止でき、弁体が破損した場合であっても弁体を容易に交換できる逆流防止弁体付き桝装置を提供する。  The present invention has been made in view of the above points, and can prevent the backflowed drainage from being ejected from the drainage facility, and can easily replace the valve body even when the valve body is damaged. Providing the device.

請求項1に記載された発明は、流入側接続口、流出側接続口、これら流入側接続口と流出側接続口とを接続するインバート部及びこのインバート部の上方に開口する掃除口を形成した桝本体と、この桝本体の前記流入側接続口の前記インバート部側に着脱可能に取付けられる弁体とを備えた逆流防止弁体付き桝装置であって、前記弁体は、この弁体を前記桝本体の前記掃除口またはこの掃除口に接続された立ち上がり管に固定する円弧状の押さえ部と、この押さえ部に回動可能に取付けられ前記流入側接続口を開閉可能に閉塞する弁部とによって構成したものである。  The invention described inclaim 1 forms an inflow side connection port, an outflow side connection port, an invert portion connecting the inflow side connection port and the outflow side connection port, and a cleaning port opening above the invert portion. A scissor device with a backflow prevention valve body, comprising a scissors main body and a valve body detachably attached to the invert portion side of the inflow side connection port of the scissors main body, wherein the valve body includes the valve body An arc-shaped pressing part that is fixed to the cleaning port of the main body or the riser pipe connected to the cleaning port, and a valve unit that is rotatably attached to the pressing part and closes the inflow side connection port so as to be opened and closed. It is constituted by.

そして、下水道本管から溢れた排水が前記流出側接続口から前記桝本体へ逆流しても、前記弁体の前記弁部によって前記流入側接続口が閉塞されているので、逆流する排水は前記流入側接続管に侵入することがなく、家屋内の排水設備から排水及びこの排水によって圧送された空気が噴き出すことがない。また、前記流入側接続口から前記桝本体へ流入する排水によって前記弁体の前記弁部が前記本体内に向って開口されるため、各排水設備から排出される排水は、前記桝本体内に流入して前記流出側接続口から下水道本管へ排出される。  And even if the waste water overflowing from the sewer main flows backward from the outflow side connection port to the main body, the inflow side connection port is closed by the valve portion of the valve body, There is no intrusion into the inflow side connecting pipe, and the drainage from the drainage system in the house and the air pumped by the drainage do not blow out. Further, since the valve portion of the valve body is opened toward the inside of the main body by the drainage flowing into the main body from the inflow side connection port, the drainage discharged from each drainage facility flows into the main body. Then, it is discharged from the outflow side connection port to the sewer main.

さらに、前記弁体は、弾性変形可能な前記押さえ部を前記桝本体の前記掃除口またはこの掃除口に接続された立ち上がり管に固定して前記桝本体に取付けられているので、前記押さえ部を縮径することによって、前記弁体を脱着できる。  Further, the valve body is attached to the bag body by fixing the elastically deformable pressing part to the cleaning port of the bag main body or the rising pipe connected to the cleaning port. The valve body can be detached by reducing the diameter.

請求項2に記載された発明は、請求項1に記載された逆流防止弁体付き桝装置において、桝本体には、弁体に形成した被係合部が係脱可能に係合する係合部を設けたものである。  According to a second aspect of the present invention, in the scissor device with the backflow prevention valve body according to the first aspect, the engaged portion formed on the valve body is detachably engaged with the scissors main body. A part is provided.

そして、前記弁体の取付けの際には、前記弁体に形成した前記被係合部を前記桝本体に設けた係合部に係合することにより、前記弁体を所定の取付位置に取付けることができる。  And when attaching the said valve body, the said to-be-engaged part formed in the said valve body is engaged with the engaging part provided in the said collar body, and the said valve body is attached to a predetermined attachment position. be able to.

請求項3に記載された発明は、請求項1または2に記載された逆流防止弁体付き桝装置において、前記弁体には、桝本体から前記弁体を着脱する治具と係合可能な治具係合部を設けたものである。  According to a third aspect of the present invention, in the scissor device with the backflow prevention valve body according to the first or second aspect, the valve body can be engaged with a jig for attaching and detaching the valve body from the scissor body. A jig engaging portion is provided.

そして、前記弁体を交換する際には、前記弁体の治具係合部に治具を係合させて着脱して交換する。  When exchanging the valve body, the jig is engaged with the jig engaging portion of the valve body to be attached and detached for replacement.

請求項1に記載された発明によれば、桝本体の流入側接続口のインバート部側に弁体が取付けられたことにより、前記流出側接続口から前記桝本体へ排水が逆流しても、前記弁体によって逆流した排水が前記桝本体から流入側接続口へ侵入することを防止できるので、排水及びこの排水によって圧送された空気が、排水設備から家屋内へ噴き出すことを防止できる。  According to the invention described inclaim 1, by attaching a valve body to the inverted portion side of the inflow side connection port of the main body, even if drainage flows backward from the outflow side connection port to the main body, Since it is possible to prevent the waste water flowing back by the valve body from entering the inflow side connection port from the main body, it is possible to prevent the waste water and the air pumped by the waste water from being ejected from the drainage facility into the house.

さらに、前記弁体は、押さえ部を前記桝本体の掃除口またはこの掃除口に接続された立ち上がり管に固定することによって着脱自在に前記桝本体に取付けられているので、前記弁体が逆流する排水や空気によって破損した場合であっても、容易に交換できる。  Further, since the valve body is detachably attached to the scissor body by fixing the pressing portion to the cleaning port of the scissor body or the rising pipe connected to the cleaning port, the valve body flows backward. Even if it is damaged by drainage or air, it can be easily replaced.

請求項2に記載された発明によれば、弁体の被係合部が係脱自在に係合する係合部を桝本体に設けたことにより、前記弁体を取付ける際に、前記弁体の位置決めを容易にでき、前記桝本体に前記弁体を確実に取付けることができる。  According to the second aspect of the present invention, when the valve body is mounted, the valve body is provided with the engaging portion in which the engaged portion of the valve body is detachably engaged. Can be easily positioned, and the valve body can be securely attached to the rod body.

請求項3に記載された発明によれば、弁体に治具係合部を設けたことにより、前記弁体を交換する際に、治具を前記治具係合部に係合することができるので、治具が使用し易く、より容易に交換できる。  According to the invention described inclaim 3, by providing the jig engaging portion on the valve body, when exchanging the valve body, the jig can be engaged with the jig engaging portion. As a result, the jig is easy to use and can be replaced more easily.

以下、本発明の一実施の形態を図1ないし図6を参照しながら詳細に説明する。  Hereinafter, an embodiment of the present invention will be described in detail with reference to FIGS.

図1及び図2は、逆流防止弁体付き桝装置1を示し、この逆流防止弁体付き桝装置1は、桝本体2とこの桝本体2に着脱自在に取付けられた弁体3とを備えている。  1 and 2 show ascissor device 1 with a backflow prevention valve body, and thisscissor device 1 with a backflow prevention valve body includes ascissors body 2 and avalve body 3 removably attached to thescissors body 2. ing.

桝本体2は、合成樹脂にて成形され、図3に示されるように、流入側接続口4、流出側接続口5が形成され、これら流入側接続口4と流出側接続口5とを接続するインバート部6及びこのインバート部6の上方に開口する掃除口7が形成されている。  As shown in FIG. 3, thebag body 2 is formed with an inflowside connection port 4 and an outflowside connection port 5, and the inflowside connection port 4 and the outflowside connection port 5 are connected. The invert part 6 to be formed and the cleaningport 7 opening above the invert part 6 are formed.

この掃除口7は受口に形成され、この受口の掃除口7には立ち上がり管8の下端部が嵌合されて接続され、この立ち上がり管8の上端部には枠体9が嵌着されている。  The cleaningport 7 is formed as a receiving port. The lower end portion of the risingpipe 8 is fitted and connected to the cleaningport 7 of the receiving port, and the frame 9 is fitted to the upper end portion of the risingtube 8. ing.

この枠体9は、立ち上がり管8の内径と略同一の外径を有する略円筒状の嵌挿部10を有し、さらに、枠体9の上端開口部の内周部には環状の支持部11が形成され、この支持部11に図示しない略円板状の掃除口蓋体が開閉自在に支持されている。  The frame body 9 has a substantially cylindricalfitting insertion portion 10 having an outer diameter substantially the same as the inner diameter of theriser tube 8, and an annular support portion on the inner peripheral portion of the upper end opening of the frame body 9. 11 is formed, and a substantially disc-shaped cleaning port lid (not shown) is supported on thesupport portion 11 so as to be freely opened and closed.

そして、桝本体2の流入側接続口4のインバート部6側に位置するように弁体3が着脱自在に取付けられている。  And thevalve body 3 is detachably attached so that it may be located in the invert part 6 side of the inflowside connection port 4 of the collarmain body 2. FIG.

図4ないし図6に示されるように、弁体3は、この弁体3を桝本体2の掃除口7に接続された立ち上がり管8に固定する円弧状の押さえ部14を備え、さらに、この押さえ部14にヒンジ15にて回動可能に軸支されて取付けられた弁部16によって、流入側接続口4を開閉可能に閉塞するように構成されている。  As shown in FIGS. 4 to 6, thevalve body 3 includes an arc-shapedpressing portion 14 that fixes thevalve body 3 to the risingpipe 8 connected to the cleaningport 7 of therod body 2. The inflowside connection port 4 is closed so as to be openable and closable by avalve portion 16 that is pivotally supported and attached to thepressing portion 14 by ahinge 15.

押さえ部14は、円環の一部が切り欠かれ、桝本体2の掃除口7に接続された立ち上がり管8の内径より大きく形成され円弧状の形状であり、弾性変形可能であり、弾性変形可能な押さえ部14を縮径させて、その拡開弾性によって固定され、弁体3が流入側接続口4のインバート部6側に位置するように取付けられる。  The holdingpart 14 has a circular ring shape with a part of the ring cut out and formed larger than the inner diameter of the risingtube 8 connected to the cleaningport 7 of the bagmain body 2, and is elastically deformable. The possiblepressing portion 14 is reduced in diameter and fixed by its expansion elasticity, and thevalve body 3 is attached so as to be positioned on the invert portion 6 side of the inflowside connection port 4.

なお、この実施例では、掃除口7に接続された立ち上がり管8の内周面に押さえ部14を固定したが、弁体3が流入側接続口4のインバート部6側に位置するように取付けられていれば、押さえ部14を、桝本体2の掃除口7の内周面または掃除口7に接続された立ち上がり管8の内周面のどちらに固定してもよい。  In this embodiment, thepressing portion 14 is fixed to the inner peripheral surface of the risingpipe 8 connected to the cleaningport 7, but thevalve body 3 is attached so as to be located on the invert portion 6 side of the inflowside connection port 4. If so, thepressing portion 14 may be fixed to either the inner peripheral surface of the cleaningport 7 of the bagmain body 2 or the inner peripheral surface of the risingtube 8 connected to the cleaningport 7.

弁部16のヒンジ15による軸支部の両側には溝状または突起状の被係合部17が形成され、桝本体2には被係合部17と係脱可能に係合する溝状または突起状の係合部18が設けられている。  Groove-shaped or projectingengagement portions 17 are formed on both sides of the shaft support portion by thehinge 15 of thevalve portion 16, and theflange body 2 is engaged with theengagement portion 17 in a detachable manner. A shaped engagingportion 18 is provided.

被係合部17は、弁部16と干渉しないように、弁部16の外径よりやや大きな円弧状に切り欠かれた形状である。  The engagedportion 17 has a shape cut out in an arc shape slightly larger than the outer diameter of thevalve portion 16 so as not to interfere with thevalve portion 16.

このように、弁体3に被係合部17が設けられ、桝本体2に係合部18が設けられたことにより、弁体3を桝本体2に取付ける際に、弁体3の位置決めを容易にでき、弁体3を確実に取付けることができるので好ましいが、弁体3に被係合部17が設けられ、桝本体2に係合部18が設けられる構成には限定されず、例えば、弁体3に被係合部17を設けない構成や、桝本体2に係合部18を設けない構成であっても、弁体3は、押さえ部14によって桝本体2に固定できるので、取付け可能である。  As described above, the engagedportion 17 is provided in thevalve body 3 and the engagingportion 18 is provided in therod body 2, so that thevalve body 3 is positioned when thevalve body 3 is attached to therod body 2. Although it is easy and can attach thevalve body 3 reliably, it is preferable, but it is not limited to the structure in which the to-be-engaged part 17 is provided in thevalve body 3, and theengaging part 18 is provided in the rodmain body 2, for example, Even if the engagedportion 17 is not provided on thevalve body 3 or the engagedportion 18 is not provided on theheel body 2, thevalve body 3 can be fixed to theheel body 2 by thepressing portion 14. It can be installed.

また、弁体3には、桝本体2から弁体3を着脱させる際に使用する交換用の治具23と係合可能な治具係合部19が設けられている。  Further, thevalve body 3 is provided with ajig engaging portion 19 that can be engaged with a replacement jig 23 used when thevalve body 3 is attached to and detached from the rodmain body 2.

この治具係合部19は、円環の一部を切り欠いた円弧状の押さえ部14の一方の先端部を折曲させて形成されており、治具係合部19には、治具係合孔20が形成されている。  Thejig engaging portion 19 is formed by bending one end portion of the arc-shapedpressing portion 14 with a part of the ring cut out. Anengagement hole 20 is formed.

また、図7に示されるように交換用の治具23は、先端部24がフック状に形成され、他端側に三角状に折曲された持ち手部25が形成されたもので、このフック状の先端部24を弁体3の治具係合部19の治具係合孔20に係合できる。  Further, as shown in FIG. 7, the replacement jig 23 has atip portion 24 formed in a hook shape and ahandle portion 25 bent in a triangular shape on the other end side. The hook-shapedtip portion 24 can be engaged with thejig engaging hole 20 of thejig engaging portion 19 of thevalve body 3.

なお、治具23は、先端部24がフック状の形状のものには限定されず、弁体3の治具係合部19と係合できる形状のものであればよい。また、持ち手部25の形状も三角状には限定されず、また持ち手を設けない構成としてもよい。  Note that the jig 23 is not limited to one having thetip portion 24 having a hook shape, and may be any shape that can engage with thejig engaging portion 19 of thevalve body 3. Further, the shape of thehandle portion 25 is not limited to a triangular shape, and a configuration may be adopted in which no handle is provided.

弁体3に治具係合孔20が形成された治具係合部19が設けられることにより、弁体3を着脱する際に治具23を使用し易く、弁体3の交換作業がより容易になるので好ましいが、弁体3に治具係合部19を設ける構成には限定されず、治具係合部19を設けない構成としてもよい。  By providing thejig engaging portion 19 in which thejig engaging hole 20 is formed in thevalve body 3, the jig 23 can be easily used when attaching and detaching thevalve body 3, and the replacement work of thevalve body 3 can be performed more easily. However, the configuration is not limited to the configuration in which thejig engaging portion 19 is provided in thevalve body 3, and the configuration in which thejig engaging portion 19 is not provided may be employed.

また、治具係合部19に治具係合孔20が形成されることにより、治具23が治具係合部19と係合し易く、交換作業を容易にできるので好ましいが、治具係合部19に治具係合孔20を形成する構成には限定されず、例えば、突設した治具係合部19に治具23を係合する構成等でもよい。  Further, it is preferable that thejig engaging hole 19 is formed in thejig engaging portion 19 so that the jig 23 can be easily engaged with thejig engaging portion 19 and the replacement work can be easily performed. The configuration is not limited to the configuration in which thejig engaging hole 20 is formed in the engagingportion 19, and for example, a configuration in which the jig 23 is engaged with the protrudingjig engaging portion 19 may be used.

さらに、弁体3に治具係合部19を設ける場合には、押さえ部14の先端部に設けることにより、治具23を治具係合部19に係合した状態で上方に引っ張ると、押さえ部14が縮径し易く、容易に弁体3を取外すことができ、また、押さえ部14の先端部を折曲するだけで治具係合部19を形成できるので好ましいが、治具係合部19を押さえ部14の先端部に設ける構成には限定されず、弁体3のどの部分に設けてもよい。  Furthermore, when providing thejig engaging part 19 in thevalve body 3, when the jig 23 is pulled upward while being engaged with thejig engaging part 19 by being provided at the tip of the holdingpart 14, It is preferable because the holdingpart 14 can be easily reduced in diameter, thevalve body 3 can be easily removed, and thejig engaging part 19 can be formed simply by bending the tip part of the holdingpart 14. It is not limited to the structure which provides thejoint part 19 in the front-end | tip part of the holding | suppressingpart 14, You may provide in any part of thevalve body 3. FIG.

ヒンジ15にて回動可能に取付けられた弁部16は、通常、図5に示されるように弁部16の自重によって略鉛直な状態となって流入側接続口4を閉塞しており、流入側接続口4から桝本体2へ排水が排出されることによって、図6に示されるように、弁部16が桝本体2内に向かって回動し、流入側接続口4を開口する。そして、排水が排出し終わると、再度弁部16は、自重によって鉛直な状態となり流入側接続口4を閉塞する。  As shown in FIG. 5, thevalve portion 16 that is rotatably attached to thehinge 15 is usually in a substantially vertical state due to the weight of thevalve portion 16 and closes the inflowside connection port 4. When the drainage is discharged from theside connection port 4 to theheel body 2, as shown in FIG. 6, thevalve portion 16 is rotated into theheel body 2 to open the inflowside connection port 4. When the drainage is completely discharged, thevalve portion 16 again becomes vertical due to its own weight and closes the inflowside connection port 4.

ここで、弁部16の軸支部にはストッパ21が設けられており、図6に示す弁部16が略水平な開口状態まで回動できるように回動範囲を規制されている。  Here, astopper 21 is provided at the shaft support portion of thevalve portion 16, and the rotation range is restricted so that thevalve portion 16 shown in FIG. 6 can be rotated to a substantially horizontal opening state.

このように弁部16の回動範囲が規制されることにより、流入側接続口4から排水を排出する際に、弁部16が開口方向に回動し過ぎて、排水の排出後に弁部16が閉塞状態に戻らなくなるおそれを確実に防止できるので好ましいが、回動範囲が規制される構成には限定されず、回動範囲を規制しない構成としてもよい。  By restricting the rotation range of thevalve portion 16 in this way, when discharging the drainage from the inflowside connection port 4, thevalve portion 16 rotates too much in the opening direction, and thevalve portion 16 is discharged after the drainage is discharged. However, the configuration is not limited to the configuration in which the rotation range is restricted, and the rotation range may not be restricted.

また、桝本体2の流入側接続口4には、弁部16が係脱可能に係合する弁部係合部22が形成され、弁部16が閉塞状態では、弁部16が弁部係合部22に係合する。  In addition, the inflowside connection port 4 of the bagmain body 2 is formed with a valveportion engaging portion 22 for releasably engaging thevalve portion 16. When thevalve portion 16 is closed, thevalve portion 16 is engaged with the valve portion. Engage with the joint 22.

このように、流入側接続口4に弁部係合部22が設けられることにより、弁部16が流入側接続口4を確実に閉塞できるので好ましいが、流入側接続口4に弁部係合部22が設けられる構成には限定されず、例えば弁部16が、流入側接続口4の縁部を覆うように流入側接続口4を閉塞する構成等でもよい。  Thus, it is preferable that the valveportion engaging portion 22 is provided in the inflowside connection port 4, so that thevalve portion 16 can reliably close the inflowside connection port 4, but the valve portion engagement with the inflowside connection port 4 is preferable. The configuration in which theportion 22 is provided is not limited. For example, thevalve portion 16 may be configured to close the inflowside connection port 4 so as to cover the edge of the inflowside connection port 4.

なお、この逆流防止弁体付き桝装置1は、公共桝に使用するのが一般的ではあるが、公共桝に使用することには限定されず、例えば宅地桝等に利用することも可能である。  In addition, although it is common to use thisdredging apparatus 1 with a backflow prevention valve body for a public dredging, it is not limited to using for a public dredging, For example, it can also be utilized for a residential land dredging etc. .

次に、上記実施の形態の作用及び効果を説明する。  Next, the operation and effect of the above embodiment will be described.

逆流防止弁体付き桝装置1は、通常、図5に示されるように弁部16が自重によって略鉛直な状態となって流入側接続口4を閉塞しており、流入側接続口4から桝本体2へ排水が排出されることによって、図6に示されるように、弁部16が桝本体2内に向かって回動し、流入側接続口4を開口する。そして、排水の排出が終わると、再度弁部16は、自重によって鉛直な状態となり流入側接続口4を閉塞する。  As shown in FIG. 5, the dredgedevice 1 with the backflow prevention valve body normally closes the inflowside connection port 4 with thevalve portion 16 being in a substantially vertical state by its own weight. As the waste water is discharged to themain body 2, as shown in FIG. 6, thevalve portion 16 rotates toward the inside of the bagmain body 2 to open the inflowside connection port 4. When the drainage is finished, thevalve portion 16 again becomes vertical due to its own weight and closes the inflowside connection port 4.

このように、桝本体2の流入側接続口4のインバート部6側に弁体3が取付けられた逆流防止弁体付き桝装置1は、下水道本管から溢れた排水が桝本体2に逆流した場合であっても、弁体3に設けられた弁部16によって流入側接続口4が閉塞され、逆流した排水が桝本体2から流入側接続口4へ侵入することを防止できるので、逆流した排水及びこの排水によって圧送された空気が、排水設備を通って家屋内へ噴き出すことがない。  Thus, in thedredging device 1 with the backflow prevention valve body in which thevalve body 3 is attached to the invert portion 6 side of the inflowside connection port 4 of thedredging body 2, the drainage overflowing from the sewer main pipe flows back into thedredging body 2. Even in this case, the inflowside connection port 4 is closed by thevalve portion 16 provided in thevalve body 3, and the backflowed drainage can be prevented from entering the inflowside connection port 4 from thesoot body 2, so that the backflow occurred. The drainage and the air pumped by the drainage do not blow out into the house through the drainage facility.

逆流防止弁体付き桝装置1において、逆流する排水や空気により破損した弁体3を交換する際には、まず、枠体9から立ち上がり管8及び桝本体2の掃除口7へ交換用の治具23を挿入し、治具23の先端部24を、円弧状の押さえ部14の先端部に設けられた治具係合部19の治具係合孔20に係合する。そして、治具23を治具係合部19の治具係合孔20に係合した状態で、治具23を上方へ引っ張ることにより、弾性変形可能な円弧状の押さえ部14が弾性に抗して縮径し掃除口7に接続された立ち上がり管8での押さえ部14の固定が外れ、そのまま、治具23を引き上げて弁体3を取外し、逆流防止弁体付き桝装置1から弁体3を取出す。  In thedredging device 1 with the backflow prevention valve body, when exchanging thevalve body 3 damaged by the backflowing drainage or air, first, the replacement treatment from the frame body 9 to the risingpipe 8 and the cleaningport 7 of the dredgebody 2 is performed. The tool 23 is inserted, and thedistal end portion 24 of the jig 23 is engaged with thejig engaging hole 20 of thejig engaging portion 19 provided at the distal end portion of the arc-shapedpressing portion 14. Then, with the jig 23 engaged with thejig engaging hole 20 of thejig engaging portion 19, the jig 23 is pulled upward, so that the arc-shapedpressing portion 14 that can be elastically deformed resists elasticity. Then, the holdingpart 14 at the risingpipe 8 connected to the cleaningport 7 is reduced in diameter, and the jig 23 is pulled up as it is to remove thevalve body 3, and thevalve body 1 from thedredging device 1 with the backflow prevention valve body is removed. Take 3 out.

また、新しい弁体3の押さえ部14の治具係合部19の治具係合孔20に治具23を係合し、治具23が係合した状態の弁体3を枠体9から立ち上がり管8へ入れる。そして、そのまま治具23によって弁体3を押し下げるようにして、弁体3の被係合部17と桝本体2の係合部18とを係合させ、縮径された押さえ部14を拡開弾性によって掃除口7に接続された立ち上がり管8に固定させて、弁体3を流入側接続口4のインバート部6側に取付ける。  Further, the jig 23 is engaged with thejig engaging hole 20 of thejig engaging portion 19 of the holdingportion 14 of thenew valve body 3, and thevalve body 3 in a state in which the jig 23 is engaged is removed from the frame body 9. Place inriser 8. Then, thevalve body 3 is pushed down by the jig 23 as it is, and the engagedportion 17 of thevalve body 3 and the engagingportion 18 of therod body 2 are engaged to expand thepressing portion 14 whose diameter has been reduced. Thevalve body 3 is attached to the invert portion 6 side of the inflowside connection port 4 by being fixed to the risingpipe 8 connected to the cleaningport 7 by elasticity.

さらに、押さえ部14の治具係合部19の治具係合孔20に係合された治具23を取外し、逆流防止弁体付き桝装置1から治具23を取出す。  Further, the jig 23 engaged with thejig engaging hole 20 of thejig engaging part 19 of the holdingpart 14 is removed, and the jig 23 is taken out from thescissor device 1 with the backflow prevention valve element.

このように、逆流防止弁体付き桝装置1では、一部が切り欠かれて弾性変形可能な押さえ部14を桝本体2の掃除口7に接続された立ち上がり管8に固定することによって、弁体3が着脱自在に桝本体2に取付けられるので、逆流する排水や空気によって弁体3が破損した場合であっても、容易に交換できる。  As described above, in thescissor device 1 with the backflow prevention valve body, thepressing part 14 that is partly cut out and elastically deformable is fixed to the risingpipe 8 connected to the cleaningport 7 of thescissor body 2, thereby Since thebody 3 is detachably attached to thebag body 2, even if thevalve body 3 is damaged by the backflowing drainage or air, it can be easily replaced.

また、弁体3の被係合部17が係脱自在に係合する係合部18を桝本体2に設けたことにより、弁体3を取付ける際に、被係合部17と係合部18とを係合させることで、弁体3の位置決めを容易にでき、桝本体2に弁体3を確実に取付けることができる。  Further, since thehook body 2 is provided with an engagingportion 18 in which the engagedportion 17 of thevalve body 3 is detachably engaged, when thevalve body 3 is attached, the engagedportion 17 and the engaging portion By engaging 18, the positioning of thevalve body 3 can be facilitated, and thevalve body 3 can be securely attached to therod body 2.

さらに、円環の一部が切り欠かれた円弧状の押さえ部14の先端部に、治具係合孔20を有する治具係合部19を設けたことにより、弁体3を交換する際に、治具23の先端部24を治具係合部19の治具係合孔20に係合することができるので、治具23が使用し易く、弁体3をより容易に交換できる。  Furthermore, when thevalve body 3 is replaced by providing ajig engaging portion 19 having ajig engaging hole 20 at the tip of the arc-shaped holdingportion 14 with a part of the ring cut out. In addition, since thetip 24 of the jig 23 can be engaged with thejig engaging hole 20 of thejig engaging portion 19, the jig 23 can be easily used and thevalve body 3 can be replaced more easily.

本発明の一実施の形態を示す逆流防止弁体付き桝装置を示す縦断面図である。It is a longitudinal cross-sectional view which shows the scissors apparatus with a backflow prevention valve body which shows one embodiment of this invention.同上逆流防止弁体付き桝装置を示す平面図である。It is a top view which shows a scissors apparatus with a backflow prevention valve body same as the above.同上逆流防止弁体付き桝装置における桝本体を示す縦断面図である。It is a longitudinal cross-sectional view which shows the coffin main body in the coffin apparatus with a backflow prevention valve body same as the above.同上逆流防止弁体付き桝装置における弁体を示す平面図である。It is a top view which shows the valve body in a saddle device with a backflow prevention valve body same as the above.同上逆流防止弁体付き桝装置における弁体の弁部の閉塞状態を示す縦断面図である。It is a longitudinal cross-sectional view which shows the obstruction | occlusion state of the valve part of the valve body in a saddle device with a backflow prevention valve body same as the above.同上逆流防止弁体付き桝装置における弁体の弁部の開口状態を示す縦断面図である。It is a longitudinal cross-sectional view which shows the opening state of the valve part of the valve body in a saddle device with a backflow prevention valve body same as the above.同上逆流防止弁体付き桝装置における弁体を着脱する治具を示す側面図である。It is a side view which shows the jig | tool which attaches / detaches the valve body in the saddle device with a backflow prevention valve body same as the above.

符号の説明Explanation of symbols

1 逆流防止弁体付き桝装置
2 桝本体
3 弁体
4 流入側接続口
5 流出側接続口
6 インバート部
7 掃除口
8 立ち上がり管
14 押さえ部
16 弁部
17 被係合部
18 係合部
19 治具係合部
23 治具
DESCRIPTION OFSYMBOLS 1 Saddle device with backflowprevention valve body 2Sag body 3Valve body 4 Inflowside connection port 5 Outflow side connection port 6Invert part 7Cleaning port 8 Rise pipe
14 Holding part
16 Valve
17 Engaged part
18 Engagement part
19 Jig engagement part
23 Jig

Claims (3)

Translated fromJapanese
流入側接続口、流出側接続口、これら流入側接続口と流出側接続口とを接続するインバート部及びこのインバート部の上方に開口する掃除口を形成した桝本体と、この桝本体の前記流入側接続口の前記インバート部側に着脱可能に取付けられる弁体とを備えた逆流防止弁体付き桝装置であって、
前記弁体は、
この弁体を前記桝本体の前記掃除口またはこの掃除口に接続された立ち上がり管に固定する円弧状の押さえ部と、この押さえ部に回動可能に取付けられ前記流入側接続口を開閉可能に閉塞する弁部とによって構成した
ことを特徴とする逆流防止弁体付き桝装置。
An inflow side connection port, an outflow side connection port, an invert portion that connects the inflow side connection port and the outflow side connection port, and a scissors body that forms a cleaning port that opens above the invert portion, and the inflow of the scissors body A scissor device with a backflow prevention valve body comprising a valve body detachably attached to the invert part side of the side connection port,
The valve body is
An arc-shaped pressing portion that fixes the valve body to the cleaning port of the main body or the rising pipe connected to the cleaning port, and the inflow side connection port can be opened and closed by being rotatably attached to the pressing portion. A scissor device with a backflow prevention valve body, characterized by comprising a valve portion that closes.
桝本体には、弁体に形成した被係合部が係脱可能に係合する係合部を設けた
ことを特徴とする請求項1記載の逆流防止弁体付き桝装置。
The scissor device with a backflow prevention valve body according to claim 1, wherein the scissors main body is provided with an engaging portion for releasably engaging an engaged portion formed on the valve body.
弁体には、桝本体から前記弁体を着脱する治具と係合可能な治具係合部を設けた
ことを特徴とする請求項1または2記載の逆流防止弁体付き桝装置。
3. The scissor device with a backflow prevention valve body according to claim 1, wherein the valve body is provided with a jig engaging portion that can be engaged with a jig that attaches and detaches the valve body from the scissors body.
JP2007211844A2007-08-152007-08-15 Dredge device with check valvePendingJP2009046828A (en)

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JP2017226969A (en)*2016-06-202017-12-28株式会社メーシックDeodorization device for drainage basin
KR102208157B1 (en)*2019-10-112021-01-27(주)경신이엔씨Underwater pump with a countercurrent prevention unit

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