JP2761738B2 - Waiting type automatic on-off valve - Google Patents
Waiting type automatic on-off valveInfo
- Publication number
- JP2761738B2 JP2761738B2 JP28166288A JP28166288A JP2761738B2 JP 2761738 B2 JP2761738 B2 JP 2761738B2 JP 28166288 A JP28166288 A JP 28166288A JP 28166288 A JP28166288 A JP 28166288A JP 2761738 B2 JP2761738 B2 JP 2761738B2
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- valve
- tube
- inner pipe
- fire
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Description
【発明の詳細な説明】 a. 産業上の利用分野 本発明は、待期式自動開閉弁に関する。The present invention relates to a waiting type automatic on-off valve.
b. 従来の技術 火災の発生に際して消火栓を使用する場合、収納ボッ
クスに収納されたホースを引き出し、消火員のひとりが
放水用ノズルを持ち、別の消火員が消火栓バルブを開い
て通水を行ない、消火作業を行なっている。したがって
消火員がひとりしかいない場合には、消火栓の水圧が高
いので、放水用ノズルを持ちながら消火栓バルブを開く
ことは事実上不可能である。b. Conventional technology When using a fire hydrant in the event of a fire, pull out the hose stored in the storage box, one of the fire extinguishers has a nozzle for water discharge, and another fire extinguisher opens the hydrant valve to pass water. Fire extinguishing work. Therefore, when there is only one fire extinguisher, the water pressure of the fire hydrant is high, and it is virtually impossible to open the fire hydrant valve while holding the water discharge nozzle.
そこで、ひとりの消火員でも容易に操作を行なうこと
ができるようにした第３図のような消火栓バルブ（実願
昭59−28400号）を先に出願した。Therefore, a fire hydrant valve as shown in FIG. 3 (Japanese Utility Model Application No. 59-28400) was filed in advance so that even a single fire extinguisher could operate easily.
この消火栓バルブは、給水口100に回動可能に嵌合し
た直角型の外管101に、円筒状の内管102を摺動可能に嵌
入し、外管101と内管102との両者間にはＯリング103,10
4を配装して水密性を得るようにしている。一方、内管1
02の先端には、消防用ホース105を取付け、この消防用
ホース105の先端にノズル（図示せず）を装着してい
る。This hydrant valve has a cylindrical inner pipe 102 slidably fitted into a right-angled outer pipe 101 rotatably fitted to a water supply port 100, and is provided between the outer pipe 101 and the inner pipe 102. Is O-ring 103,10
4 is arranged to obtain watertightness. Meanwhile, inner tube 1
A fire hose 105 is attached to the end of 02, and a nozzle (not shown) is attached to the end of the fire hose 105.
そして、火災に際しては、消火栓の元栓を開け、ノズ
ルを持って火災現場に行き、消防用ホース105を引く
と、内管102が摺動して、外管101と内管102が連通す
る。これによって、外管101から内管102を通って水が流
れ、放水が開始される。Then, in the event of a fire, open the main plug of the fire hydrant, go to the fire site with the nozzle, pull the fire hose 105, the inner pipe 102 slides, and the outer pipe 101 and the inner pipe 102 communicate. As a result, water flows from the outer pipe 101 through the inner pipe 102, and water discharge is started.
このような消火栓バルブによると、ひとりの消火員に
よって操作を行なうことはできるが、外管101内の水圧
が内管102側面に作用する。このため内径40mmのホース
に用いるもので、通常、水圧が4kg/cm2のとき、引抜き
力が12kg必要となり、水圧が7kg/cm2のとき、引抜き力
が20kg必要となるので、バルブの開放時にかなりの力で
内管102を引かなければならない。したがって、操作に
不慣れな人，あるいは女性等の非力な人が操作をして、
消防用ホース105を引いたつもりでいたところが、実際
には、内管102が摺動せずに放水が開始されないことが
あり、再度、消防用ホース105を引くなどの操作が必要
となる。According to such a fire hydrant valve, the operation can be performed by a single fire extinguisher, but the water pressure in the outer pipe 101 acts on the side surface of the inner pipe 102. For this reason, it is used for hoses with an inner diameter of 40 mm.When the water pressure is 4 kg / cm 2 , a pulling force of 12 kg is required, and when the water pressure is 7 kg / cm 2 , a pulling force of 20 kg is required. Sometimes the inner tube 102 must be pulled with considerable force. Therefore, a person who is unfamiliar with operation or a weak person such as a woman operates
Although the intention was to pull the fire hose 105, the inner pipe 102 may not actually slide and water discharge may not be started, and an operation such as pulling the fire hose 105 again is necessary.
そこで、内管に小孔を設け、かつ内管に弁体を設ける
ようにした消火栓用バルブ（特願昭60−168405号公報）
が知られている。Therefore, a fire hydrant valve in which a small hole is provided in the inner pipe and a valve element is provided in the inner pipe (Japanese Patent Application No. 60-168405).
It has been known.
この従来技術によると、小孔を通して内管に水が注入
され、内管内を水が充満すると、その水圧により内管が
摺動し、弁を開放するものである。According to this conventional technique, water is injected into the inner pipe through a small hole, and when the inside of the inner pipe is filled with water, the water pressure causes the inner pipe to slide and open the valve.
c. 発明が解決しようとする課題 しかしながら、内管内の容積が限られているので、室
内消火栓用として内径40mmのホースを30m程度延長する
場合には適するが、屋外消火栓など内径50mmや65mmでし
かも長さ20mのホースを数本接続するようなときは現場
に到達する前に放水が開始されてしまうおそれがあっ
た。c. Problems to be solved by the invention However, since the volume inside the inner pipe is limited, it is suitable when extending a hose with an inner diameter of 40 mm for an indoor fire hydrant by about 30 m. When several hoses with a length of 20 m are connected, there is a possibility that water discharge may be started before reaching the site.
本発明は上記課題を解決し、一定時間経過後に流体の
供給を行ない得る待期式自動開閉弁を提供することを目
的とする。An object of the present invention is to solve the above-mentioned problem and to provide a waiting type automatic on-off valve capable of supplying a fluid after a lapse of a predetermined time.
d. 課題を解決するための手段 本発明は上記課題を解決するため、元栓側に設けられ
た外管と、この外管に一端部を摺動自在に嵌入された内
管とを備え、上記外管内と内管内とを連通する通路を通
して内管内に導入される流体の圧力により内管を摺動
し、外管内と内管内を直接連通させる待期式自動開閉弁
において、上記内管の先端部に延長管を介在し、該延長
管に、内管の摺動によって開放する弁体を内蔵したこと
にある。d. Means for Solving the Problems In order to solve the above problems, the present invention comprises an outer tube provided on the main cock side, and an inner tube having one end slidably fitted into the outer tube, A waiting type automatic on-off valve which slides the inner tube by the pressure of a fluid introduced into the inner tube through a passage communicating between the outer tube and the inner tube to directly communicate between the outer tube and the inner tube. An extension pipe is interposed in the portion, and a valve element that is opened by sliding the inner pipe is built in the extension pipe.
e. 作用 元栓の開放により小孔を通して流体が内管に導入され
る。内管に導入された流体は内管および延長管に充満
し、延長管および内管を摺動させる。内管の摺動によっ
て弁体を開放し、流体を供給する。e. Action Fluid is introduced into the inner tube through the small hole by opening the main plug. The fluid introduced into the inner tube fills the inner tube and the extension tube, and slides the extension tube and the inner tube. The valve body is opened by sliding the inner pipe to supply the fluid.
f. 実施例 以下、本発明の一実施例を図面を参照しながら詳細に
説明する。f. Example Hereinafter, an example of the present invention will be described in detail with reference to the drawings.
第１図は待期式自動開閉弁を示す断面図である。 FIG. 1 is a sectional view showing a waiting type automatic on-off valve.
同図において、待期式自動開閉弁は給水口１に連結さ
れたＬ字型の外管２と、この外管２の筒部３に一部を摺
動可能に嵌入した内管４と、この内管４の先端に連結さ
れた延長管５とで構成されている。In FIG. 1, a waiting type automatic on-off valve includes an L-shaped outer pipe 2 connected to a water supply port 1, an inner pipe 4 partially fitted slidably in a cylindrical portion 3 of the outer pipe 2, An extension pipe 5 connected to the tip of the inner pipe 4 is provided.
上記外管２は給水口１側の開口端内面にバネ（図示せ
ず）で付勢される爪部６を設け、該爪部６を介して給水
口１に回動可能に嵌着している。The outer tube 2 is provided with a claw 6 urged by a spring (not shown) on the inner surface of the opening end on the water supply port 1 side, and rotatably fitted to the water supply port 1 via the claw 6. I have.
上記内管４は外管２の流路を遮断する一次弁を構成
し、かつ内管４の側壁面には外管２と連通する小孔4aが
穿設されている。上記延長管５は、調節管７を介して内
管４の先端に連結されており、延長管５の内部には弁体
８が内装されて二次弁を構成している。調節管７は両端
に継手部91,92が設けられ、それぞれ内管４および延長
管５の継手部10,11と連結されている。調節管７は、ホ
ースの長さとホースを持って火災現場に到達する時間を
考慮してその長さを設定している。The inner pipe 4 constitutes a primary valve for shutting off the flow path of the outer pipe 2, and a small hole 4 a communicating with the outer pipe 2 is formed in a side wall surface of the inner pipe 4. The extension pipe 5 is connected to a distal end of the inner pipe 4 via a control pipe 7, and a valve element 8 is provided inside the extension pipe 5 to form a secondary valve. Control pipe 7 joints 9 1, 9 2 are provided at both ends, and is connected to the joint portion 10, 11 of the inner pipe 4 and the extension tube 5, respectively. The length of the control pipe 7 is set in consideration of the length of the hose and the time required to reach the fire site with the hose.
上記弁体８は外管２の後端を閉塞する蓋部2aに鎖12を
介して連結されており、延長管５の摺動により、大径部
5a内に位置するようにしてある。5bは延長管５内に設け
られた弁座13は延長管５内部に設けられたストッパで、
これは円板に放射状の孔を穿けたものである。14は延長
管５の先端に連結されたホースであり、その先端にノズ
ル（図示せず）が設けられている。The valve body 8 is connected via a chain 12 to a lid 2a that closes the rear end of the outer tube 2.
It is located within 5a. 5b is a valve seat 13 provided in the extension pipe 5 and a stopper provided in the extension pipe 5
This is a circular plate with radial holes. Reference numeral 14 denotes a hose connected to the tip of the extension tube 5, and a nozzle (not shown) is provided at the tip.
上記構成によると、火災に際して消火栓からノズルを
取り出し、元栓を開けて火災現場に向かう。元栓の開放
によって外管２内に水が導入され、小孔4aを通して内管
４内に流入する。内管４に導入された水は、内管4,調節
管７および延長管５によって形成される二次室に徐々に
充満し、一定時間で満杯となる。そして、二次室の圧力
が増大し、延長管５を摺動し、内管４を開放させる。こ
うして、内管４が摺動して外管２と内管４が直接連通
し、一方、弁体８が弁座5bから離れて弁を開放し、給水
が開始される。According to the above configuration, at the time of a fire, the nozzle is taken out of the fire hydrant, the main cock is opened, and the fire head is approached. Water is introduced into the outer tube 2 by opening the main plug, and flows into the inner tube 4 through the small hole 4a. The water introduced into the inner pipe 4 gradually fills the secondary chamber formed by the inner pipe 4, the control pipe 7, and the extension pipe 5, and becomes full in a certain time. Then, the pressure in the secondary chamber increases, and the extension pipe 5 slides to open the inner pipe 4. In this way, the inner pipe 4 slides and the outer pipe 2 and the inner pipe 4 communicate directly, while the valve body 8 separates from the valve seat 5b to open the valve, and water supply is started.
g. 発明の効果 以上述べたように、本発明による待期式自動開閉弁に
よれば、一定時間経過後に弁を開放するので、主バルブ
を開いてからホースを伸ばすまでの時間を確保すること
ができる。g. Effects of the Invention As described above, according to the waiting type automatic on-off valve of the present invention, the valve is opened after a certain period of time, so that the time from opening the main valve to extending the hose is ensured. Can be.
特に本発明を消火栓に適用することで、ひとりの操作
員によって容易に消火活動を行なうことができる。In particular, by applying the present invention to a fire hydrant, fire extinguishing activities can be easily performed by one operator.
第１図および第２図は本発明の一実施例による待期式自
動開閉弁を示す断面図、第３図は従来の消火栓用自動開
閉弁を示す断面図である。 １……給水口、２……外管、 ４……内管、５……延長管、 ７……調節管、８……弁体。1 and 2 are cross-sectional views showing a waiting type automatic on-off valve according to an embodiment of the present invention, and FIG. 3 is a cross-sectional view showing a conventional automatic on-off valve for a fire hydrant. 1 ... water supply port, 2 ... outer pipe, 4 ... inner pipe, 5 ... extension pipe, 7 ... adjustment pipe, 8 ... valve body.
Claims (1)
端部を摺動自在に嵌入された内管とを備え、上記外管内
と内管内とを連通する通路を通して内管内に導入される
流体の圧力により内管を摺動し、外管内と内管内を直接
連通させる待期式自動開閉弁において、上記内管の先端
部に設定長さの延長管を介在し、該延長管に、内管の摺
動によって開放する弁体を内蔵したことを特徴とする待
期式自動開閉弁。An outer tube provided on a main plug side, and an inner tube having one end slidably fitted into the outer tube, wherein the inner tube is inserted into the inner tube through a passage communicating between the outer tube and the inner tube. In the waiting type automatic on-off valve which slides the inner pipe by the pressure of the introduced fluid and directly communicates the outer pipe with the inner pipe, an extension pipe of a set length is interposed at the tip of the inner pipe, and the extension is performed. A waiting type automatic on-off valve characterized in that a built-in valve body is opened in the pipe by sliding the inner pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28166288A JP2761738B2 (en) | 1988-11-08 | 1988-11-08 | Waiting type automatic on-off valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28166288A JP2761738B2 (en) | 1988-11-08 | 1988-11-08 | Waiting type automatic on-off valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02126865A JPH02126865A (en) | 1990-05-15 |
| JP2761738B2 true JP2761738B2 (en) | 1998-06-04 |
Family
ID=17642228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28166288A Expired - Fee Related JP2761738B2 (en) | 1988-11-08 | 1988-11-08 | Waiting type automatic on-off valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2761738B2 (en) |
-
1988
- 1988-11-08 JP JP28166288A patent/JP2761738B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02126865A (en) | 1990-05-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |