JP2000329287A - Gate valve device - Google Patents
Gate valve deviceInfo
- Publication number
- JP2000329287A JP2000329287A JP11137217A JP13721799A JP2000329287A JP 2000329287 A JP2000329287 A JP 2000329287A JP 11137217 A JP11137217 A JP 11137217A JP 13721799 A JP13721799 A JP 13721799A JP 2000329287 A JP2000329287 A JP 2000329287A
- Authority
- JP
- Japan
- Prior art keywords
- gate valve
- seal member
- existing pipe
- pipe
- cutting
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、断水することなく
既設管を切削する不断水装置に使用されるのに最適な仕
切弁装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gate valve device most suitable for use in a water-stop device for cutting an existing pipe without cutting off water.
【０００２】[0002]
【従来の技術】従来より、不断水で既設管を穿孔し、既
設管を閉塞すべく、穿孔箇所に仕切弁体を挿入する不断
水バルブ挿入工法は周知である。前記既設管の穿孔口
は、既設管の強度低下を最小限に抑える為に、可及的に
口径の小さい（管径よりも小さい）ものが望ましい。2. Description of the Related Art Conventionally, there is a well-known method of inserting a non-stop water valve in which an existing pipe is pierced with water without interruption and a gate valve body is inserted into a pierced portion in order to close the existing pipe. It is desirable that the diameter of the perforated hole of the existing pipe is as small as possible (smaller than the diameter of the pipe) in order to minimize a decrease in the strength of the existing pipe.
【０００３】このため、前記仕切弁体は、管径よりも小
さな穿孔口から管内部に進入可能な構造であると共に、
止水のために管内部を密着させる機能をも兼ね備えたも
のでなければならず、仕切弁体は、図１０（ａ），
（ｂ）に示す如く上下に移動自在な支持部材５１と、該
支持部材５１に取り付けられ且つ既設管５２内を閉塞す
べく弾性変形可能なシール部材５３とからなる。[0003] For this reason, the gate valve body has a structure capable of entering the inside of the pipe through a hole smaller than the diameter of the pipe.
It must also have a function of bringing the inside of the pipe into close contact with each other to stop water.
As shown in (b), the support member 51 includes a vertically movable movable support member 51, and a seal member 53 attached to the support member 51 and elastically deformable to close the existing pipe 52.
【０００４】かかる仕切弁体５０は、既設管５２よりも
小さな穿孔口５５から円形の既設管５２内部に支持部材
５１を押し込むことにより、シール部材５３を既設管５
２内周面に密着するように拡張（膨出）させることで、
既設管５２内周面に密着させ、止水の目的を果たすよう
にしている。[0004] The gate valve member 50 pushes the support member 51 into the circular existing pipe 52 from a perforation opening 55 smaller than the existing pipe 52, thereby forming the sealing member 53 into the existing pipe 5.
2 By expanding (swelling) so as to adhere to the inner peripheral surface,
It is brought into close contact with the inner peripheral surface of the existing pipe 52 so as to fulfill the purpose of stopping water.
【０００５】しかしながら、既設管５２内周面は、円形
を呈していることから、シール部材５３が確実に幅方向
に拡がらず、均一の密着性を得ることは難しく、密着不
良が生じるおそれがあり、水密性に劣る問題があった。
そこで、シール部材５３の幅を強制的に拡げる手段も開
発されている。However, since the inner peripheral surface of the existing pipe 52 has a circular shape, the sealing member 53 does not reliably expand in the width direction, and it is difficult to obtain uniform adhesion, and there is a possibility that poor adhesion may occur. There was a problem with poor water tightness.
Therefore, means for forcibly increasing the width of the seal member 53 has been developed.
【０００６】[0006]
【発明が解決しようとする課題】前記シール部材５３の
幅を強制的に拡げる手段は、複数の部材を支持部材に内
蔵し、機械的にシール部材を膨出させる構成であるた
め、構造が複雑となり、装置が大型化するため、特に小
径の既設管をシールする場合には不利であると共に高価
になる欠点があった。The means for forcibly increasing the width of the seal member 53 has a structure in which a plurality of members are built in the support member and the seal member is bulged mechanically. Therefore, there is a disadvantage that the apparatus is disadvantageous and expensive, especially when a small-diameter existing pipe is sealed, because the apparatus becomes large.
【０００７】そこで、本発明は、上記問題点に鑑み、装
置の簡素化及び小型化を図り、小径の既設管であっても
充分な止水性を確保することができ、しかも、安価に製
造できる仕切弁装置を提供することを課題とする。Accordingly, the present invention has been made in view of the above-mentioned problems, and has attempted to simplify and reduce the size of the apparatus, to ensure sufficient waterproofness even with a small-diameter existing pipe, and to manufacture it at low cost. It is an object to provide a gate valve device.
【０００８】[0008]
【課題を解決するための手段】本発明は、上記課題を解
決すべくなされたもので、その特徴は、管１内の流体の
流れ方向に対して垂直方向に移動する仕切弁体１９を有
し、該仕切弁体１９は、上下に移動自在な支持部材１８
と、該支持部材１８に取り付けられ且つ管１内を閉塞す
べく弾性変形可能なシール部材２０とを備えてなる仕切
弁装置において、前記支持部材１８を管１内方に移動さ
せた際に、シール部材２０を両側に膨出できるように変
形する拡幅手段３０が設けられたことにある。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and has a feature that a gate valve body 19 which moves in a direction perpendicular to a flow direction of a fluid in a pipe 1 is provided. The sluice valve body 19 is provided with a support member 18 that can move up and down.
And a sealing member 20 attached to the support member 18 and capable of being elastically deformed so as to close the inside of the pipe 1, when the support member 18 is moved inward of the pipe 1, The widening means 30 for deforming the seal member 20 so that the seal member 20 can protrude to both sides is provided.
【０００９】したがって、仕切弁体１９を下降させる
と、シール部材２０の下端面が管１の内周面の底部に当
接し、シール部材２０の移動が停止する。支持部材１８
は更に下方に移動すると、支持部材１８は、拡幅部材３
０を強制的に下方に押圧する。このとき、拡幅部材３０
は、ほとんど容積が変化することなく変形してシール部
材２０を強制的に両外側に押し出すこととなり、シール
部材２０の両側は広幅部材３０により拡げられる。この
結果、シール部材２０は膨出して管１の内周面に確実に
圧接する。Therefore, when the gate valve body 19 is lowered, the lower end surface of the seal member 20 comes into contact with the bottom of the inner peripheral surface of the pipe 1, and the movement of the seal member 20 stops. Support member 18
Is moved further downward, the support member 18
0 is forcibly pressed down. At this time, the widening member 30
Is deformed with almost no change in the volume and the seal member 20 is forcibly pushed out to both outsides, and both sides of the seal member 20 are expanded by the wide member 30. As a result, the seal member 20 swells and reliably presses against the inner peripheral surface of the tube 1.
【００１０】[0010]
【発明の実施の形態】図１乃至図７は本発明の第一実施
の形態を示す。図１及び図２に示すように、２は弁箱を
構成する密閉ケースで、該密閉ケース２は分割された第
一および第二分割ケース３，４を備え、ゴムパッキン５
により、分割面がシールされている。また、第二分割ケ
ース４の上面には、弁蓋９が取り付けられ、弁蓋９は第
一および第二分割ケース３，４と共に密閉ケース２を構
成する。そして、密閉ケース２内に仕切弁装置８が予め
収容されている。FIG. 1 to FIG. 7 show a first embodiment of the present invention. As shown in FIGS. 1 and 2, reference numeral 2 denotes a sealed case that constitutes a valve box. The sealed case 2 includes first and second divided cases 3 and 4 and a rubber packing 5.
Thereby, the division surface is sealed. A valve cover 9 is attached to the upper surface of the second divided case 4, and the valve cover 9 constitutes the closed case 2 together with the first and second divided cases 3 and 4. The gate valve device 8 is housed in the sealed case 2 in advance.
【００１１】第二分割ケース４には、切削工具１０が貫
通する分岐状部４ａが突出状態で設けられていると共
に、既設管１の切削時の切粉を水と共に排出する排水孔
１３が設けられ、該排水孔１３には、図示省略の排水バ
ルブが連結される。The second split case 4 is provided with a protruding branch portion 4a through which the cutting tool 10 penetrates, and is provided with a drain hole 13 for discharging swarf when cutting the existing pipe 1 together with water. A drain valve (not shown) is connected to the drain hole 13.
【００１２】前記分岐状部４ａには図示省略の開閉バル
ブ（作業用弁）が設けられ、また、分岐状部４ａには切
断機１５が取り付けられるようになっている。切断機１
５は、前記既設管１の上部に半円環状の切削口１７を形
成するためのもので、前記切削工具１０を既設管１の径
方向に送ると共に、切削工具１０をモータやエンジンな
どの原動機の回転力により回転させて、切削運動を行わ
せる。該切断機１５の構造は、周知のホールソー形式の
不断水用穿孔機に近似した構造であり、したがって、そ
の詳しい図示および説明を省略する。An open / close valve (working valve) (not shown) is provided in the branch portion 4a, and a cutting machine 15 is attached to the branch portion 4a. Cutting machine 1
Numeral 5 is for forming a semi-annular cutting port 17 at the upper part of the existing pipe 1, and sends the cutting tool 10 in the radial direction of the existing pipe 1 and moves the cutting tool 10 to a motor such as a motor or an engine. The cutting force is caused to rotate by the rotation force of. The structure of the cutting machine 15 is similar to that of a well-known hole saw type perforator for non-water cutting, and a detailed illustration and description thereof will be omitted.
【００１３】次に、前記仕切弁装置８について説明す
る。仕切弁装置８は、前記切削工具１０によって切削さ
れる切削口１７に対応する部分に配置される。仕切弁装
置８は、仕切弁体１９を備えている。仕切弁体１９は、
上部にナット収容部１９ａが形成された金属製の支持部
材１８と、弾性変形自在なゴム材料からなるシール部材
２０とからなる。前記ナット収容部１９ａに収容された
ナット２１には、外周におねじを有するスピンドル１２
が螺合されている。また、該スピンドル１２は、支持部
材１８に挿入されていると共に、前記弁蓋９に回転自在
に支持されている。Next, the gate valve device 8 will be described. The gate valve device 8 is disposed at a portion corresponding to the cutting opening 17 cut by the cutting tool 10. The gate valve device 8 includes a gate valve body 19. The gate valve body 19 is
It comprises a metal support member 18 having a nut housing portion 19a formed on the upper portion, and a seal member 20 made of an elastically deformable rubber material. The nut 21 accommodated in the nut accommodating portion 19a has a spindle 12 having a thread on the outer periphery.
Is screwed. The spindle 12 is inserted into a support member 18 and is rotatably supported by the valve cover 9.
【００１４】前記支持部材１８は、円弧状のフランジ部
２３と該フランジ部２３よりも薄肉状の保持部２４とか
らなる。保持部２４の外周には、断面形状がコの字状の
嵌合溝２５が形成され、該嵌合溝２５には、シール部材
２０が装着されている。即ち、保持部２４の周部には、
一対の挟持片部２９と溝の底面を構成する溝底部３１と
が設けられている。溝底部３１は、上方の水平状の押圧
部３３と該押圧部３３に接続する上下方向の支持部３４
を備える。The support member 18 comprises an arc-shaped flange portion 23 and a holding portion 24 thinner than the flange portion 23. A fitting groove 25 having a U-shaped cross section is formed on the outer periphery of the holding portion 24, and the sealing member 20 is mounted in the fitting groove 25. That is, on the periphery of the holding portion 24,
A pair of holding pieces 29 and a groove bottom 31 forming the bottom of the groove are provided. The groove bottom portion 31 includes an upper horizontal pressing portion 33 and a vertical supporting portion 34 connected to the pressing portion 33.
Is provided.
【００１５】前記シール部材２０には、拡幅手段３０が
埋入されている。拡幅手段３０は、例えばシリコンゴム
等の前記シール部材より軟質のゴム材料又は樹脂材料か
らなる。また、拡幅手段３０は、圧縮された際にほとん
ど体積変化のないもの（非圧縮体）が採用されている。
しかも、拡幅手段３０は、溝底部３１の押圧部３３及び
支持部３４に接近又は接触するように、シール部材２０
の両側に縦長方向に設けられている。A widening means 30 is embedded in the seal member 20. The widening means 30 is made of a rubber material or a resin material which is softer than the sealing member such as silicon rubber. Further, as the widening means 30, one having almost no change in volume when compressed (non-compressed body) is employed.
Moreover, the widening means 30 moves the seal member 20 so as to approach or contact the pressing portion 33 and the supporting portion 34 of the groove bottom 31.
Are provided in the longitudinal direction on both sides.
【００１６】シール部材２０のフランジ部２０ａには、
図７に示す如く、仕切弁体１９の保持部２４が上方から
挿入される開口２３ｂが形成され、該開口２３ｂから挿
入された保持部２４の嵌合溝２５内に、シール部材２０
の内周部が嵌入される。The flange portion 20a of the seal member 20 includes
As shown in FIG. 7, an opening 23b into which the holding portion 24 of the gate valve body 19 is inserted from above is formed, and the sealing member 20 is inserted into the fitting groove 25 of the holding portion 24 inserted from the opening 23b.
Is fitted.
【００１７】次に、止水工法の手順について説明する。
先ず、既設管１内に流体（水）が流れている状態で、作
業者は密閉ケース２を既設管１に取り付けると共に、組
立ボルトにより両分割ケース３，４を組み立て、密封状
態とする。Next, the procedure of the water stopping method will be described.
First, while the fluid (water) is flowing in the existing pipe 1, the worker attaches the closed case 2 to the existing pipe 1 and assembles the two divided cases 3 and 4 with the assembling bolts to make the sealed state.
【００１８】その後に、密閉ケース２を回転させて、切
削工具１０による切削位置を設定した後に、前記切断機
１５により、密閉ケース２内に収納された切削工具１０
を回転させると共に、既設管２の径内方向に移動させ、
既設管２の一部を切削して貫通する。After that, the closed case 2 is rotated to set the cutting position by the cutting tool 10, and then the cutting tool 10 stored in the closed case 2 is cut by the cutting machine 15.
Is rotated and moved in the radial direction of the existing pipe 2,
A part of the existing pipe 2 is cut and penetrated.
【００１９】その後、密閉ケース２を既設管２の周方向
に、例えば、約１５０度から１６０度に回転させる。す
なわち、切削工具１０を切削開始位置から切削終端位置
まで回転させ、既設管２の一部（上部）に切削口１７を
形成する。なお、切削時の切削屑は、切削口１７から溢
れ出る水の水圧によって、切削屑は排水路１３から水と
ともに排出される。Thereafter, the sealed case 2 is rotated in the circumferential direction of the existing pipe 2, for example, from about 150 degrees to 160 degrees. That is, the cutting tool 10 is rotated from the cutting start position to the cutting end position, and the cutting port 17 is formed in a part (upper part) of the existing pipe 2. In addition, the cutting chips at the time of cutting are discharged together with the water from the drainage channel 13 due to the water pressure of the water overflowing from the cutting port 17.
【００２０】更に、前記切削口１７の形成後、排水孔１
３を図示しない栓で閉塞する。その後切削工具１０を退
避させて、ボールバルブを閉弁する。この閉弁後、切断
機１５を密閉ケース２から取り外す。この取り外し後、
密閉ケース２を切削前の元の位置まで回転させる。この
とき、前記仕切弁装置８が切削口１７の上方に位置す
る。Further, after the cutting hole 17 is formed, the drain hole 1 is formed.
3 is closed with a stopper (not shown). Thereafter, the cutting tool 10 is retracted, and the ball valve is closed. After this valve closing, the cutting machine 15 is removed from the sealed case 2. After this removal,
The sealed case 2 is rotated to the original position before cutting. At this time, the gate valve device 8 is located above the cutting port 17.
【００２１】次に、スピンドル１２を回転させて、仕切
弁体１９を下降させると、シール部材２０は切削口１７
から既設管１の内部に進入する（図３参照）。やがてシ
ール部材２０の下端（先端）は、既設管１の内周面に当
接し、移動が阻止される。一方、支持部材１８はスピン
ドル１２の回転により、更に下降するため、特に支持部
材１８の押圧部３３は、拡幅手段３０を下方に強制的に
押圧する。Next, when the spindle 12 is rotated to lower the gate valve body 19, the sealing member 20
From inside the existing pipe 1 (see FIG. 3). Eventually, the lower end (tip) of the seal member 20 comes into contact with the inner peripheral surface of the existing pipe 1 and is prevented from moving. On the other hand, since the support member 18 is further lowered by the rotation of the spindle 12, the pressing portion 33 of the support member 18 forcibly presses the widening means 30 downward.
【００２２】この結果、拡幅手段３０の背面側３０ａ
は、支持部３４に保持され、且つ、両面３０ｂは、挟持
片部２９に保持されて変形することはないため、拡幅手
段３０はシール部材２０の両側外方向に変形しようとす
る。シール部材２０の拡幅手段３０よりも外側の部分
は、拡幅手段３０の変形により、弾性力に抗して外側に
押し出されて膨出し、既設管１の内周面に確実に圧接す
る。尚、拡幅手段３０は、その体積変化がほとんどない
ため、下方に圧縮された分だけ側方に突出することとな
り、シール部材２０を強固に膨出させることができる。
また、切削口１７はシール部材２０のフランジ部２３に
より、上方から閉塞される。As a result, the rear side 30a of the widening means 30
Is held by the support portion 34, and the both surfaces 30b are not deformed while being held by the holding piece 29. Therefore, the widening means 30 tries to deform in the outward direction on both sides of the seal member 20. Due to the deformation of the widening means 30, the portion of the seal member 20 outside the widening means 30 is pushed outwardly against the elastic force and bulges out, and reliably presses against the inner peripheral surface of the existing pipe 1. In addition, since the widening means 30 hardly changes in volume, the widening means 30 protrudes laterally by an amount corresponding to the downward compression, so that the seal member 20 can be firmly expanded.
Further, the cutting opening 17 is closed from above by the flange portion 23 of the seal member 20.
【００２３】次に、上記閉塞状態から仕切弁体１９を開
弁させるには、スピンドル１２を前記とは反対方向に回
転させれば良いのであるが、シール部材２０は弾性力に
より元の形状に復元する。尚、シール部材２０の復元に
際し、拡幅手段３０は容易に変形するため、拡幅手段３
０がシール部材２０の復元に支障となることはほとんど
ない。Next, in order to open the gate valve body 19 from the closed state, the spindle 12 may be rotated in the opposite direction, but the seal member 20 is returned to its original shape by elastic force. Restore. When the sealing member 20 is restored, the widening means 30 is easily deformed.
0 hardly hinders the restoration of the seal member 20.
【００２４】図８及び図９は本発明の第二実施の形態を
示す。本第二実施の形態では、シール部材２０の両側に
多数の球体（硬球）３１と板バネ体３３とを埋入した構
成である。前記支持部３４には、先端（下方）に向けて
次第に幅が狭くなるテーパー状となる傾斜部２５ａがそ
れぞれ設けられている。尚、前記多数の球体（硬球）３
１と板バネ体３３により、拡幅手段３０が構成されてい
る。板バネ体３３は硬球３０よりも外側に位置する。FIGS. 8 and 9 show a second embodiment of the present invention. In the second embodiment, a large number of spheres (hard spheres) 31 and leaf spring bodies 33 are embedded on both sides of the seal member 20. The support portion 34 is provided with a tapered inclined portion 25a whose width gradually decreases toward the tip (downward). In addition, said many spheres (hard balls) 3
1 and the leaf spring body 33 constitute the widening means 30. The leaf spring body 33 is located outside the hard sphere 30.
【００２５】従って、スピンドル１２を回転させて、仕
切弁体１９を下降させた際に、支持部材１８の押圧部３
３は硬球３１を下方に押し、且つ、傾斜部２５ａは硬球
３１を斜め下方に押す。この結果、硬球３１はシール部
材２０を両幅外方向で且つ若干下方（既設管１の径外方
向）に強制的に押圧し膨出させる（図９（ａ），（ｂ）
参照）。Therefore, when the spindle 12 is rotated to lower the gate valve body 19, the pressing portion 3
3 pushes the hard ball 31 downward, and the inclined portion 25a pushes the hard ball 31 obliquely downward. As a result, the hard ball 31 forcibly presses the seal member 20 outward in both width directions and slightly downward (outward in the radial direction of the existing pipe 1) to expand (FIGS. 9A and 9B).
reference).
【００２６】この結果、シール部材２０は、弾性力に抗
して外側に押し出されて膨出し、既設管１の内周面に確
実に圧接する。As a result, the sealing member 20 is pushed outward and bulges out against the elastic force, and reliably presses against the inner peripheral surface of the existing pipe 1.
【００２７】また、開弁時には、板バネ体３３の弾性力
により、多数の硬球３０は元の位置まで戻され、シール
部材２０は確実に復元する。尚、硬球３１は図８（ａ）
で示すドット部分（ｃ）まで設けるようにしても良い。When the valve is opened, a large number of hard balls 30 are returned to their original positions by the elastic force of the leaf spring body 33, and the seal member 20 is securely restored. The hard ball 31 is shown in FIG.
May be provided up to the dot portion (c) indicated by.
【００２８】図１０は、本発明の第三実施の形態を示
す。即ち、前記支持部３４には、先端（下方）に向けて
次第に幅が狭くなるテーパー状となる傾斜部２５ａがそ
れぞれ設けられている。また、拡幅手段３０は、シール
部材より軟質のゴム材料又は樹脂材料からなり、該拡幅
手段３０は、保持部２４の嵌合溝２５にわたって設けら
れている。かかる場合も、テーパ状の傾斜部２５ａを利
用して拡幅手段３０により、シール部材２０を両幅外方
向で且つ若干下方に強制的に押圧し膨出させることがで
きる。FIG. 10 shows a third embodiment of the present invention. That is, each of the support portions 34 is provided with a tapered inclined portion 25a whose width gradually decreases toward the tip (downward). The widening means 30 is made of a rubber material or a resin material which is softer than the sealing member. The widening means 30 is provided over the fitting groove 25 of the holding portion 24. Also in such a case, the sealing member 20 can be forcibly pressed outward in both width directions and slightly downward by the widening means 30 using the tapered inclined portion 25a to expand.
【００２９】尚、本発明は上記実施の形態に限定される
ものではなく、不断水用の管に限らるものではなく、水
以外の任意の流体を止める際にも採用可能である。It should be noted that the present invention is not limited to the above-described embodiment, and is not limited to a pipe for uninterrupted water supply, but can be adopted when stopping any fluid other than water.
【００３０】[0030]
【発明の効果】以上説明したように、本発明は支持部材
を管内方に移動させた際に、シール部材を両側に膨出で
きるように変形する拡幅手段が設けられているので、装
置の簡素化及び小型化が図れ、小径の管であっても充分
な止水性を確保することができ、しかも、安価に製造す
ることができる。As described above, according to the present invention, when the support member is moved inward of the pipe, the widening means for deforming the seal member so that it can swell to both sides is provided. It is possible to reduce the size and size of the tube, to secure a sufficient water stoppage even with a small-diameter tube, and to manufacture the tube at low cost.
【図１】本発明の一実施の形態の不断水装置の断面正面
図。FIG. 1 is a cross-sectional front view of a water suspension device according to an embodiment of the present invention.
【図２】同断面側面図。FIG. 2 is a sectional side view of the same.
【図３】仕切弁体を既設管に挿入する直前の断面図。FIG. 3 is a cross-sectional view just before inserting a gate valve body into an existing pipe.
【図４】仕切弁体を既設管に挿入した状態の断面図。FIG. 4 is a cross-sectional view of a state where a gate valve body is inserted into an existing pipe.
【図５】同図３のＡ−Ａ線矢視断面図。FIG. 5 is a sectional view taken along line AA of FIG. 3;
【図６】仕切弁体及び既設管を示す斜視図。FIG. 6 is a perspective view showing a gate valve body and an existing pipe.
【図７】シール部材の側面図。FIG. 7 is a side view of the seal member.
【図８】本発明の第二実施の形態を示し、（ａ）は仕切
弁体の半断面図、（ｂ）は（ａ）のＢ−Ｂ線矢視断面
図。8A and 8B show a second embodiment of the present invention, wherein FIG. 8A is a half sectional view of a gate valve body, and FIG. 8B is a sectional view taken along line BB of FIG.
【図９】（ａ）は仕切弁体を既設管に挿入する直前の断
面図、（ｂ）は仕切弁体を既設管に挿入した状態の断面
図。FIG. 9A is a cross-sectional view just before inserting a gate valve into an existing pipe, and FIG. 9B is a cross-sectional view in a state where the gate valve is inserted into an existing pipe.
【図１０】本発明の第三実施の形態の不断水装置の半断
面図。FIG. 10 is a half cross-sectional view of the water suspension device according to the third embodiment of the present invention.
【図１１】従来例を示し、（ａ）は閉弁直前状態を示す
断面図、（ｂ）は閉弁状態を示す断面図。11A and 11B show a conventional example, in which FIG. 11A is a sectional view showing a state immediately before valve closing, and FIG. 11B is a sectional view showing a valve closing state.
１…既設管（管）、１８…支持部材、１９…仕切弁体、
２０…シール部材、３０…拡幅手段1 ... existing pipe (pipe), 18 ... support member, 19 ... gate valve,
20: seal member, 30: widening means
【手続補正書】[Procedure amendment]
【提出日】平成１２年８月３１日（２０００．８．３
１）[Submission date] August 31, 2000 (2000.8.3)
1)
【手続補正１】[Procedure amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】全文[Correction target item name] Full text
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【書類名】 明細書[Document Name] Statement
【発明の名称】 仕切弁装置[Title of the Invention] Gate valve device
【特許請求の範囲】[Claims]
【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【００００】[0000]
【発明の属する技術分野】本発明は、断水することなく
既設管を切削する不断水装置に使用されるのに最適な仕
切弁装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gate valve device most suitable for use in a water-stop device for cutting an existing pipe without cutting off water.
【００００】[0000]
【従来の技術】従来より、不断水で既設管を穿孔し、既
設管を閉塞すべく、穿孔箇所に仕切弁体を挿入する不断
水バルブ挿入工法は周知である。前記既設管の穿孔口
は、既設管の強度低下を最小限に抑える為に、可及的に
口径の小さい（管径よりも小さい）ものが望ましい。2. Description of the Related Art Conventionally, there is a well-known method of inserting a non-stop water valve in which an existing pipe is pierced with water without interruption and a gate valve body is inserted into a pierced portion in order to close the existing pipe. It is desirable that the diameter of the perforated hole of the existing pipe is as small as possible (smaller than the diameter of the pipe) in order to minimize a decrease in the strength of the existing pipe.
【００００】このため、前記仕切弁体は、管径よりも小
さな穿孔口から管内部に進入可能な構造であると共に、
止水のために管内部を密着させる機能をも兼ね備えたも
のでなければならず、仕切弁体は、図１０（ａ），
（ｂ）に示す如く上下に移動自在な支持部材５１と、該
支持部材５１に取り付けられ且つ既設管５２内を閉塞す
べく弾性変形可能なシール部材５３とからなる。For this reason, the gate valve body has a structure that can enter the inside of the pipe through a hole smaller than the diameter of the pipe.
It must also have a function of bringing the inside of the pipe into close contact with each other to stop water.
As shown in (b), the support member 51 includes a vertically movable movable support member 51, and a seal member 53 attached to the support member 51 and elastically deformable to close the existing pipe 52.
【００００】かかる仕切弁体５０は、既設管５２よりも
小さな穿孔口５５から円形の既設管５２内部に支持部材
５１を押し込むことにより、シール部材５３を既設管５
２内周面に密着するように拡張（膨出）させることで、
既設管５２内周面に密着させ、止水の目的を果たすよう
にしている。The gate valve body 50 is formed by pushing the support member 51 into the circular existing pipe 52 from the perforation hole 55 smaller than the existing pipe 52, thereby connecting the sealing member 53 to the existing pipe 5.
2 By expanding (swelling) so as to adhere to the inner peripheral surface,
It is brought into close contact with the inner peripheral surface of the existing pipe 52 so as to fulfill the purpose of stopping water.
【００００】しかしながら、既設管５２内周面は、円形
を呈していることから、シール部材５３が確実に幅方向
に拡がらず、均一の密着性を得ることは難しく、密着不
良が生じるおそれがあり、水密性に劣る問題があった。
そこで、シール部材５３の幅を強制的に拡げる手段も開
発されている。However, since the inner peripheral surface of the existing pipe 52 has a circular shape, the sealing member 53 does not reliably spread in the width direction, and it is difficult to obtain uniform adhesion, and there is a possibility that poor adhesion may occur. There was a problem with poor water tightness.
Therefore, means for forcibly increasing the width of the seal member 53 has been developed.
【００００】[0000]
【発明が解決しようとする課題】前記シール部材５３の
幅を強制的に拡げる手段は、複数の部材を支持部材に内
蔵し、機械的にシール部材を膨出させる構成であるた
め、構造が複雑となり、装置が大型化するため、特に小
径の既設管をシールする場合には不利であると共に高価
になる欠点があった。The means for forcibly increasing the width of the seal member 53 has a structure in which a plurality of members are built in the support member and the seal member is bulged mechanically. Therefore, there is a disadvantage that the apparatus is disadvantageous and expensive, especially when a small-diameter existing pipe is sealed, because the apparatus becomes large.
【００００】そこで、本発明は、上記問題点に鑑み、装
置の簡素化及び小型化を図り、小径の既設管であっても
充分な止水性を確保することができ、しかも、安価に製
造できる仕切弁装置を提供することを課題とする。Accordingly, the present invention has been made in view of the above-mentioned problems, and has attempted to simplify and reduce the size of the apparatus, to ensure sufficient waterproofness even with a small-diameter existing pipe, and to manufacture it at low cost. It is an object to provide a gate valve device.
【００００】[0000]
【課題を解決するための手段】本発明は、上記課題を解
決すべくなされたもので、その特徴は、管１内の流体の
流れ方向に対して垂直方向に移動する仕切弁体１９を有
し、該仕切弁体１９は、上下に移動自在な支持部材１８
と、該支持部材１８に取り付けられ且つ管１内を閉塞す
べく弾性変形可能なシール部材２０とを備えてなる仕切
弁装置において、前記持部材１８は、円弧状のフランジ
部２３と該フランジ部２３よりも薄肉状の保持部２４と
からなり、保持部２４の外周に形成された嵌合溝２５
に、前記シール部材２０が嵌入され、しかも、前記支持
部材１８を管１内方に移動させた際に、シール部材２０
を両側に膨出できるように変形する拡幅手段３０が、前
記シール部材２０に埋入され、拡幅手段３０は、ゴム材
料又は樹脂材料等の前記シール部材２０より軟質の材料
からなることにある。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and has a feature that a gate valve body 19 which moves in a direction perpendicular to a flow direction of a fluid in a pipe 1 is provided. The sluice valve body 19 is provided with a support member 18 that can move up and down.
And a seal member 20 attached to the support member 18 and elastically deformable so as to close the inside of the pipe 1, wherein the holding member 18 has an arc-shaped flange.
Part 23 and a holding part 24 thinner than the flange part 23.
And a fitting groove 25 formed on the outer periphery of the holding portion 24.
On, the sealing member 20 is fitted, moreover, when moving the supporting member 18 the tube 1 inwardly, the seal member 20
Deformation widening means 30 for to allow bulging on either side, front
The widening means 30 is embedded in the seal member 20 and is made of a rubber material.
A material softer than the seal member 20 such as a filler or a resin material
Consists of
【００００】したがって、仕切弁体１９を下降させる
と、シール部材２０の下端面が管１の内周面の底部に当
接し、シール部材２０の移動が停止する。支持部材１８
は更に下方に移動すると、支持部材１８は、拡幅手段３
０を強制的に下方に押圧する。このとき、拡幅手段３０
は、ほとんど容積が変化することなく変形してシール部
材２０を強制的に両外側に押し出すこととなり、シール
部材２０の両側は拡幅手段３０により拡げられる。この
結果、シール部材２０は膨出して管１の内周面に確実に
圧接する。Therefore, when the gate valve body 19 is lowered, the lower end surface of the seal member 20 comes into contact with the bottom of the inner peripheral surface of the pipe 1 and the movement of the seal member 20 stops. Support member 18
Moving further downward, the support member 18, widening means 3
0 is forcibly pressed down. At this time, the widening means 30
Is deformed with almost no change in the volume, and the seal member 20 is forcibly pushed out to both outsides, and both sides of the seal member 20 are expanded by the widening means 30. As a result, the seal member 20 swells and reliably presses against the inner peripheral surface of the tube 1.
【００００】[0000]
【発明の実施の形態】図１乃至図７は本発明の第一実施
の形態を示す。図１及び図２に示すように、２は弁箱を
構成する密閉ケースで、該密閉ケース２は分割された第
一および第二分割ケース３，４を備え、ゴムパッキン５
により、分割面がシールされている。また、第二分割ケ
ース４の上面には、弁蓋９が取り付けられ、弁蓋９は第
一および第二分割ケース３，４と共に密閉ケース２を構
成する。そして、密閉ケース２内に仕切弁装置８が予め
収容されている。FIG. 1 to FIG. 7 show a first embodiment of the present invention. As shown in FIGS. 1 and 2, reference numeral 2 denotes a sealed case that constitutes a valve box. The sealed case 2 includes first and second divided cases 3 and 4 and a rubber packing 5.
Thereby, the division surface is sealed. A valve cover 9 is attached to the upper surface of the second divided case 4, and the valve cover 9 constitutes the closed case 2 together with the first and second divided cases 3 and 4. The gate valve device 8 is housed in the sealed case 2 in advance.
【００００】第二分割ケース４には、切削工具１０が貫
通する分岐状部４ａが突出状態で設けられていると共
に、既設管１の切削時の切粉を水と共に排出する排水孔
１３が設けられ、該排水孔１３には、図示省略の排水バ
ルブが連結される。The second split case 4 is provided with a protruding branch portion 4a through which the cutting tool 10 penetrates, and is provided with a drain hole 13 for discharging the cutting chips when cutting the existing pipe 1 together with water. A drain valve (not shown) is connected to the drain hole 13.
【００００】前記分岐状部４ａには図示省略の開閉バル
ブ（作業用弁）が設けられ、また、分岐状部４ａには切
断機１５が取り付けられるようになっている。切断機１
５は、前記既設管１の上部に半円環状の切削口１７を形
成するためのもので、前記切削工具１０を既設管１の径
方向に送ると共に、切削工具１０をモータやエンジンな
どの原動機の回転力により回転させて、切削運動を行わ
せる。該切断機１５の構造は、周知のホールソー形式の
不断水用穿孔機に近似した構造であり、したがって、そ
の詳しい図示および説明を省略する。An open / close valve (working valve) (not shown) is provided in the branch portion 4a, and a cutting machine 15 is attached to the branch portion 4a. Cutting machine 1
Numeral 5 is for forming a semi-annular cutting port 17 at the upper part of the existing pipe 1, and sends the cutting tool 10 in the radial direction of the existing pipe 1 and moves the cutting tool 10 to a motor such as a motor or an engine. The cutting force is caused to rotate by the rotation force of. The structure of the cutting machine 15 is similar to that of a well-known hole saw type perforator for non-water cutting, and a detailed illustration and description thereof will be omitted.
【００００】次に、前記仕切弁装置８について説明す
る。仕切弁装置８は、前記切削工具１０によって切削さ
れる切削口１７に対応する部分に配置される。仕切弁装
置８は、仕切弁体１９を備えている。仕切弁体１９は、
上部にナット収容部１９ａが形成された金属製の支持部
材１８と、弾性変形自在なゴム材料からなるシール部材
２０とからなる。前記ナット収容部１９ａに収容された
ナット２１には、外周におねじを有するスピンドル１２
が螺合されている。また、該スピンドル１２は、支持部
材１８に挿入されていると共に、前記弁蓋９に回転自在
に支持されている。Next, the gate valve device 8 will be described. The gate valve device 8 is disposed at a portion corresponding to the cutting opening 17 cut by the cutting tool 10. The gate valve device 8 includes a gate valve body 19. The gate valve body 19 is
It comprises a metal support member 18 having a nut housing portion 19a formed on the upper portion, and a seal member 20 made of an elastically deformable rubber material. The nut 21 accommodated in the nut accommodating portion 19a has a spindle 12 having a thread on the outer periphery.
Is screwed. The spindle 12 is inserted into a support member 18 and is rotatably supported by the valve cover 9.
【００００】前記支持部材１８は、円弧状のフランジ部
２３と該フランジ部２３よりも薄肉状の保持部２４とか
らなる。保持部２４の外周には、断面形状がコの字状の
嵌合溝２５が形成され、該嵌合溝２５には、シール部材
２０が装着されている。即ち、保持部２４の周部には、
一対の挟持片部２９と溝の底面を構成する溝底部３１と
が設けられている。溝底部３１は、上方の水平状の押圧
部３３と該押圧部３３に接続する上下方向の支持部３４
を備える。The support member 18 comprises an arc-shaped flange portion 23 and a holding portion 24 thinner than the flange portion 23. A fitting groove 25 having a U-shaped cross section is formed on the outer periphery of the holding portion 24, and the sealing member 20 is mounted in the fitting groove 25. That is, on the periphery of the holding portion 24,
A pair of holding pieces 29 and a groove bottom 31 forming the bottom of the groove are provided. The groove bottom portion 31 includes an upper horizontal pressing portion 33 and a vertical supporting portion 34 connected to the pressing portion 33.
Is provided.
【００００】前記シール部材２０には、拡幅手段３０が
埋入されている。拡幅手段３０は、例えばシリコンゴム
等の前記シール部材より軟質のゴム材料又は樹脂材料か
らなる。また、拡幅手段３０は、圧縮された際にほとん
ど体積変化のないもの（非圧縮体）が採用されている。
しかも、拡幅手段３０は、溝底部３１の押圧部３３及び
支持部３４に接近又は接触するように、シール部材２０
の両側に縦長方向に設けられている。In the seal member 20, a widening means 30 is embedded. The widening means 30 is made of a rubber material or a resin material which is softer than the sealing member such as silicon rubber. Further, as the widening means 30, one having almost no change in volume when compressed (non-compressed body) is employed.
Moreover, the widening means 30 moves the seal member 20 so as to approach or contact the pressing portion 33 and the supporting portion 34 of the groove bottom 31.
Are provided in the longitudinal direction on both sides.
【００００】シール部材２０のフランジ部２０ａには、
図７に示す如く、仕切弁体１９の保持部２４が上方から
挿入される開口２３ｂが形成され、該開口２３ｂから挿
入された保持部２４の嵌合溝２５内に、シール部材２０
の内周部が嵌入される。In the flange portion 20a of the seal member 20,
As shown in FIG. 7, an opening 23b into which the holding portion 24 of the gate valve body 19 is inserted from above is formed, and the sealing member 20 is inserted into the fitting groove 25 of the holding portion 24 inserted from the opening 23b.
Is fitted.
【００００】次に、止水工法の手順について説明する。
先ず、既設管１内に流体（水）が流れている状態で、作
業者は密閉ケース２を既設管１に取り付けると共に、組
立ボルトにより両分割ケース３，４を組み立て、密封状
態とする。Next, the procedure of the water stopping method will be described.
First, while the fluid (water) is flowing in the existing pipe 1, the worker attaches the closed case 2 to the existing pipe 1 and assembles the two divided cases 3 and 4 with the assembling bolts to make the sealed state.
【００２０】その後に、密閉ケース２を回転させて、切
削工具１０による切削位置を設定した後に、前記切断機
１５により、密閉ケース２内に収納された切削工具１０
を回転させると共に、既設管２の径内方向に移動させ、
既設管２の一部を切削して貫通する。Thereafter, the closed case 2 is rotated to set a cutting position by the cutting tool 10, and then the cutting tool 10 stored in the closed case 2 by the cutting machine 15.
Is rotated and moved in the radial direction of the existing pipe 2,
A part of the existing pipe 2 is cut and penetrated.
【００００】その後、密閉ケース２を既設管２の周方向
に、例えば、約１５０度から１６０度に回転させる。す
なわち、切削工具１０を切削開始位置から切削終端位置
まで回転させ、既設管２の一部（上部）に切削口１７を
形成する。なお、切削時の切削屑は、切削口１７から溢
れ出る水の水圧によって、切削屑は排水路１３から水と
ともに排出される。Thereafter, the sealed case 2 is rotated in the circumferential direction of the existing pipe 2, for example, from about 150 degrees to 160 degrees. That is, the cutting tool 10 is rotated from the cutting start position to the cutting end position, and the cutting port 17 is formed in a part (upper part) of the existing pipe 2. In addition, the cutting chips at the time of cutting are discharged together with the water from the drainage channel 13 due to the water pressure of the water overflowing from the cutting port 17.
【００００】更に、前記切削口１７の形成後、排水孔１
３を図示しない栓で閉塞する。その後切削工具１０を退
避させて、ボールバルブを閉弁する。この閉弁後、切断
機１５を密閉ケース２から取り外す。この取り外し後、
密閉ケース２を切削前の元の位置まで回転させる。この
とき、前記仕切弁装置８が切削口１７の上方に位置す
る。After the formation of the cutting hole 17, the drain hole 1
3 is closed with a stopper (not shown). Thereafter, the cutting tool 10 is retracted, and the ball valve is closed. After this valve closing, the cutting machine 15 is removed from the sealed case 2. After this removal,
The sealed case 2 is rotated to the original position before cutting. At this time, the gate valve device 8 is located above the cutting port 17.
【００２４】次に、スピンドル１２を回転させて、仕切
弁体１９を下降させると、シール部材２０は切削口１７
から既設管１の内部に進入する（図３参照）。やがてシ
ール部材２０の下端（先端）は、既設管１の内周面に当
接し、移動が阻止される。一方、支持部材１８はスピン
ドル１２の回転により、更に下降するため、特に支持部
材１８の押圧部３３は、拡幅手段３０を下方に強制的に
押圧する。Next, when the spindle 12 is rotated and the gate valve body 19 is lowered, the sealing member 20
From inside the existing pipe 1 (see FIG. 3). Eventually, the lower end (tip) of the seal member 20 comes into contact with the inner peripheral surface of the existing pipe 1 and is prevented from moving. On the other hand, since the support member 18 is further lowered by the rotation of the spindle 12, the pressing portion 33 of the support member 18 forcibly presses the widening means 30 downward.
【００００】この結果、拡幅手段３０の背面側３０ａ
は、支持部３４に保持され、且つ、両面３０ｂは、挟持
片部２９に保持されて変形することはないため、拡幅手
段３０はシール部材２０の両側外方向に変形しようとす
る。シール部材２０の拡幅手段３０よりも外側の部分
は、拡幅手段３０の変形により、弾性力に抗して外側に
押し出されて膨出し、既設管１の内周面に確実に圧接す
る。尚、拡幅手段３０は、その体積変化がほとんどない
ため、下方に圧縮された分だけ側方に突出することとな
り、シール部材２０を強固に膨出させることができる。
また、切削口１７はシール部材２０のフランジ部２３に
より、上方から閉塞される。As a result, the rear side 30a of the widening means 30
Is held by the support portion 34, and the both surfaces 30b are not deformed while being held by the holding piece 29. Therefore, the widening means 30 tries to deform in the outward direction on both sides of the seal member 20. Due to the deformation of the widening means 30, the portion of the seal member 20 outside the widening means 30 is pushed outwardly against the elastic force and bulges out, and reliably presses against the inner peripheral surface of the existing pipe 1. In addition, since the widening means 30 hardly changes in volume, the widening means 30 protrudes laterally by an amount corresponding to the downward compression, so that the seal member 20 can be firmly expanded.
Further, the cutting opening 17 is closed from above by the flange portion 23 of the seal member 20.
【００００】次に、上記閉塞状態から仕切弁体１９を開
弁させるには、スピンドル１２を前記とは反対方向に回
転させれば良いのであるが、シール部材２０は弾性力に
より元の形状に復元する。尚、シール部材２０の復元に
際し、拡幅手段３０は容易に変形するため、拡幅手段３
０がシール部材２０の復元に支障となることはほとんど
ない。Next, in order to open the gate valve body 19 from the above-mentioned closed state, the spindle 12 may be rotated in the opposite direction, but the seal member 20 is returned to its original shape by elastic force. Restore. When the sealing member 20 is restored, the widening means 30 is easily deformed.
0 hardly hinders the restoration of the seal member 20.
【００００】図８及び図９は本発明の第二実施の形態を
示す。本第二実施の形態では、シール部材２０の両側に
多数の球体（硬球）３１と板バネ体３３とを埋入した構
成である。前記支持部３４には、先端（下方）に向けて
次第に幅が狭くなるテーパー状となる傾斜部２５ａがそ
れぞれ設けられている。尚、前記多数の球体（硬球）３
１と板バネ体３３により、拡幅手段３０が構成されてい
る。板バネ体３３は硬球３０よりも外側に位置する。FIGS. 8 and 9 show a second embodiment of the present invention. In the second embodiment, a large number of spheres (hard spheres) 31 and leaf spring bodies 33 are embedded on both sides of the seal member 20. The support portion 34 is provided with a tapered inclined portion 25a whose width gradually decreases toward the tip (downward). In addition, said many spheres (hard balls) 3
1 and the leaf spring body 33 constitute the widening means 30. The leaf spring body 33 is located outside the hard sphere 30.
【００２４】従って、スピンドル１２を回転させて、仕
切弁体１９を下降させた際に、支持部材１８の押圧部３
３は硬球３１を下方に押し、且つ、傾斜部２５ａは硬球
３１を斜め下方に押す。この結果、硬球３１はシール部
材２０を両幅外方向で且つ若干下方（既設管１の径外方
向）に強制的に押圧し膨出させる（図９（ａ），（ｂ）
参照）。Therefore, when the spindle 12 is rotated to lower the gate valve body 19, the pressing portion 3
3 pushes the hard ball 31 downward, and the inclined portion 25a pushes the hard ball 31 obliquely downward. As a result, the hard ball 31 forcibly presses the seal member 20 outward in both width directions and slightly downward (outward in the radial direction of the existing pipe 1) to expand (FIGS. 9A and 9B).
reference).
【００００】この結果、シール部材２０は、弾性力に抗
して外側に押し出されて膨出し、既設管１の内周面に確
実に圧接する。As a result, the seal member 20 is pushed outward and bulges out against the elastic force, and reliably presses against the inner peripheral surface of the existing pipe 1.
【００００】また、開弁時には、板バネ体３３の弾性力
により、多数の硬球３０は元の位置まで戻され、シール
部材２０は確実に復元する。尚、硬球３１は図８（ａ）
で示すドット部分（ｃ）まで設けるようにしても良い。When the valve is opened, a large number of hard balls 30 are returned to their original positions by the elastic force of the leaf spring body 33, and the seal member 20 is securely restored. The hard ball 31 is shown in FIG.
May be provided up to the dot portion (c) indicated by.
【００００】図１０は、本発明の第三実施の形態を示
す。即ち、前記支持部３４には、先端（下方）に向けて
次第に幅が狭くなるテーパー状となる傾斜部２５ａがそ
れぞれ設けられている。また、拡幅手段３０は、シール
部材より軟質のゴム材料又は樹脂材料からなり、該拡幅
手段３０は、保持部２４の嵌合溝２５にわたって設けら
れている。かかる場合も、テーパ状の傾斜部２５ａを利
用して拡幅手段３０により、シール部材２０を両幅外方
向で且つ若干下方に強制的に押圧し膨出させることがで
きる。FIG. 10 shows a third embodiment of the present invention. That is, each of the support portions 34 is provided with a tapered inclined portion 25a whose width gradually decreases toward the tip (downward). The widening means 30 is made of a rubber material or a resin material which is softer than the sealing member. The widening means 30 is provided over the fitting groove 25 of the holding portion 24. Also in such a case, the sealing member 20 can be forcibly pressed outward in both width directions and slightly downward by the widening means 30 using the tapered inclined portion 25a to expand.
【００００】尚、本発明は上記実施の形態に限定される
ものではなく、不断水用の管に限らるものではなく、水
以外の任意の流体を止める際にも採用可能である。The present invention is not limited to the above-described embodiment, and is not limited to a pipe for non-stop water supply, but can be adopted when stopping any fluid other than water.
【００００】[0000]
【発明の効果】以上説明したように、本発明は支持部材
を管内方に移動させた際に、シール部材を両側に膨出で
きるように変形するように、シール部材より軟質のゴム
材料又は樹脂材料からなる拡幅手段が、シール部材に埋
入されているので、装置の簡素化及び小型化が図れ、小
径の管であっても充分な止水性を確保することができ、
しかも、安価に製造することができる。As described above, according to the present invention, when the support member is moved inward of the pipe, the rubber is softer than the seal member so that the seal member is deformed so as to swell to both sides.
A widening means made of a material or a resin material is embedded in the seal member.
Since it is inserted , the simplification and miniaturization of the device can be achieved, and even with a small-diameter pipe, sufficient water stoppage can be secured,
Moreover, it can be manufactured at low cost.
【図面の簡単な説明】[Brief description of the drawings]
【図１】本発明の一実施の形態の不断水装置の断面正面
図。FIG. 1 is a cross-sectional front view of a water suspension device according to an embodiment of the present invention.
【図２】同断面側面図。FIG. 2 is a sectional side view of the same.
【図３】仕切弁体を既設管に挿入する直前の断面図。FIG. 3 is a cross-sectional view just before inserting a gate valve body into an existing pipe.
【図４】仕切弁体を既設管に挿入した状態の断面図。FIG. 4 is a cross-sectional view of a state where a gate valve body is inserted into an existing pipe.
【図５】同図３のＡ−Ａ線矢視断面図。FIG. 5 is a sectional view taken along line AA of FIG. 3;
【図６】仕切弁体及び既設管を示す斜視図。FIG. 6 is a perspective view showing a gate valve body and an existing pipe.
【図７】シール部材の側面図。FIG. 7 is a side view of the seal member.
【図８】本発明の第二実施の形態を示し、（ａ）は仕切
弁体の半断面図、（ｂ）は（ａ）のＢ−Ｂ線矢視断面
図。8A and 8B show a second embodiment of the present invention, wherein FIG. 8A is a half sectional view of a gate valve body, and FIG. 8B is a sectional view taken along line BB of FIG.
【図９】（ａ）は仕切弁体を既設管に挿入する直前の断
面図、（ｂ）は仕切弁体を既設管に挿入した状態の断面
図。FIG. 9A is a cross-sectional view just before inserting a gate valve into an existing pipe, and FIG. 9B is a cross-sectional view in a state where the gate valve is inserted into an existing pipe.
【図１０】本発明の第三実施の形態の不断水装置の半断
面図。FIG. 10 is a half cross-sectional view of the water suspension device according to the third embodiment of the present invention.
【図１１】従来例を示し、（ａ）は閉弁直前状態を示す
断面図、（ｂ）は閉弁状態を示す断面図。11A and 11B show a conventional example, in which FIG. 11A is a sectional view showing a state immediately before valve closing, and FIG. 11B is a sectional view showing a valve closing state.
【符号の説明】 １…既設管（管）、１８…支持部材、１９…仕切弁体、
２０…シール部材、３０…拡幅手段[Description of Signs] 1 ... Existing pipe (pipe), 18 ... Support member, 19 ... Gate valve,
20: seal member, 30: widening means
───────────────────────────────────────────────────── フロントページの続き (72)発明者 藤崎 裕士 大阪市中央区石町１−１−11−302号 株 式会社スイケンテクノロジー内 (72)発明者 西垣 功一 岐阜県岐阜市鷺山2100 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hiroshi Fujisaki 1-1-11-302 Ishimachi, Chuo-ku, Osaka City Inside Suiken Technology Co., Ltd. (72) Inventor Koichi Nishigaki 2100 Sagiyama, Gifu City, Gifu Prefecture
Claims (3)
直方向に移動する仕切弁体（１９）を有し、該仕切弁体
（１９）は、上下に移動自在な支持部材（１８）と、該
支持部材（１８）に取り付けられ且つ管（１）内を閉塞
すべく弾性変形可能なシール部材（２０）とを備えてな
る仕切弁装置において、前記支持部材（１８）を管
（１）内方に移動させた際に、シール部材（２０）を両
側に膨出できるように変形する拡幅手段（３０）が設け
られたことを特徴とする仕切弁装置。A gate member (19) that moves in a direction perpendicular to the flow direction of a fluid in a pipe (1), and the gate member (19) is a vertically movable movable support member (19). 18) and a sealing member (20) attached to the support member (18) and elastically deformable so as to close the inside of the pipe (1). (1) A gate valve device provided with a widening means (30) for deforming the seal member (20) so that it can bulge to both sides when moved inward.
材（２０）よりも軟質の材質からなる請求項１に記載の
仕切弁装置。2. The gate valve device according to claim 1, wherein the widening means (30) is made of a material softer than the seal member (20).
（３１）を備えてなる請求項１に記載の仕切弁装置。3. The gate valve device according to claim 1, wherein the widening means (30) comprises a plurality of spheres (31).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13721799A JP3200045B2 (en) | 1999-05-18 | 1999-05-18 | Gate valve device |
| US09/520,309 US6283446B1 (en) | 1999-03-18 | 2000-03-07 | Gate valve system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13721799A JP3200045B2 (en) | 1999-05-18 | 1999-05-18 | Gate valve device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000329287A true JP2000329287A (en) | 2000-11-30 |
| JP3200045B2 JP3200045B2 (en) | 2001-08-20 |
Family
ID=15193533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13721799A Expired - Lifetime JP3200045B2 (en) | 1999-03-18 | 1999-05-18 | Gate valve device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3200045B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012017781A (en) * | 2010-07-07 | 2012-01-26 | Cosmo Koki Co Ltd | Sluice valve |
| KR101157077B1 (en) * | 2012-03-23 | 2012-06-21 | 김제현 | Device for mounting non water blockage valve on the pipe |
| KR101297622B1 (en) | 2012-06-27 | 2013-08-19 | 송상근 | Control water valve |
-
1999
- 1999-05-18 JP JP13721799A patent/JP3200045B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012017781A (en) * | 2010-07-07 | 2012-01-26 | Cosmo Koki Co Ltd | Sluice valve |
| KR101157077B1 (en) * | 2012-03-23 | 2012-06-21 | 김제현 | Device for mounting non water blockage valve on the pipe |
| KR101297622B1 (en) | 2012-06-27 | 2013-08-19 | 송상근 | Control water valve |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3200045B2 (en) | 2001-08-20 |
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