JP3975392B2 - Fire hydrant device with a hand-operated nozzle - Google Patents

Fire hydrant device with a hand-operated nozzle Download PDF

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Publication number
JP3975392B2
JP3975392B2 JP2001100610A JP2001100610A JP3975392B2 JP 3975392 B2 JP3975392 B2 JP 3975392B2 JP 2001100610 A JP2001100610 A JP 2001100610A JP 2001100610 A JP2001100610 A JP 2001100610A JP 3975392 B2 JP3975392 B2 JP 3975392B2
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Prior art keywords
valve
fire hydrant
opening
fire
hand
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JP2002291930A (en
Inventor
智宏 高比良
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Nohmi Bosai Ltd
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Nohmi Bosai Ltd
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Description

【０００１】
【発明の属する技術分野】
この発明は、一斉開放弁等の減圧開放弁、又は、加圧開放弁をノズル側で開弁する消火栓装置に関するものである。
【０００２】
【従来の技術】
トンネル内には、消火栓ボックスに収納された、多数の消火栓装置が設けられている。この消火栓装置は、従来、電動消火栓弁を備えているものがあり、この電動消火栓弁は、ホース内部に設けた電路を介してノズルの手元開弁操作スイッチに接続されている。トンネル内で火災が発生したときには、消火栓ボックスの前傾扉を手前に引いて開扉し、ノズルを握り、消火水の入っていないホースを引きずりながら火源に向う。そして、消火位置に到達後、手元開弁操作スイッチをオンにすると、電動消火栓弁が開き、消火栓弁の一次側の消火水が二次側に流入し、ホース内を通ってノズルから放水される。
【０００３】
【発明が解決しようとする課題】
従来例では、電動消火栓弁を用いているので、電源が必要である。
ところが、この電源を用いると、電路が破断したり、電圧が低下したりした場合に、手元開弁操作スイッチをオンしても電動消火栓弁が開かなくなるので、消火設備としては致命的な欠陥となる。
そこで、消火栓装置、特にトンネル内の消火栓装置においては、低電圧化が求められるとともに、電源不要の開弁手段が求められている。
【０００４】
【課題を解決するための手段】
本発明は、上記事情に鑑み、電源を用いないで開放弁の開弁を行えるようにすることを目的とする。
【０００５】
この発明は、減圧開一斉開放弁の二次側にホースを接続し、該ホースの先端にノズルを設けた消火栓装置において；前記ノズルに設けられた、スイッチを有する手元開弁操作部と；前記手元開弁操作部と前記開放弁の開弁機構の制御室とを連結する連通管であって、前記スイッチをオンにすると開放し、前記制御室内の消火用水を排出させて減圧させる連通管と；を備えていることを特徴とする。
【０００６】
この発明の前記開放弁は、弁体と、該弁体の背面に設けられた開弁機構の制御室である、シリンダ部とピストン部を備えたシリンダ室と、該シリンダ室に連通する開弁用水路と、該弁体を閉弁方向に当接押圧する付勢手段と、を備えており、前記シリンダ部には、前記連通管の流量より少ない流量のオリフイスが設けられていることを特徴とする。
【０００７】
【発明の実施の形態】
開放弁の開弁機構の制御室に開弁用水路を設け、該開弁用水路をノズルの手元開弁操作部まで伸ばすと共に、手元開弁操作部に開弁スイッチを設ける。
該開弁スイッチをオンにすると前記開弁用水路が開放されて一次側の消火水が排出されて減圧し、該減圧開放弁が開放される。
【０００８】
また、前記開弁用水路に開弁用バルブ〔起動弁）を設け、該バルブをワイヤを介して手元開弁操作部の開弁レバーに連結しても良い。
この場合には該開弁レバーを引くと、開弁用バルブが開き、開弁用水路が開放され、一次側の消火水が排出されて減圧となり、該開放弁が開く。
【０００９】
【実施例】
この発明の第１実施例を図１〜図３により説明する。
トンネル内に配設されている消火栓ボックス１内には、消火栓装置２が設けられている。この消火栓装置２は、消火栓弁３に調圧弁４を介して連続する減圧開一斉開放弁５と、該開放弁５とホース６を介して連続するノズル７と、を備えている。
【００１０】
減圧開一斉開放弁５は、弁体１０と、該弁体１０の背面に設けられた開弁機構の制御室である、シリンダ室１２と、該シリンダ室１２に連通する開弁用水路１４と、該弁体１０を閉弁方向に当接押圧する付勢手段１６と、を備えている。
【００１１】
弁体１０は、弁座１８に接離し、一次側１９と二次側２０とを仕切る。シリンダ室１２はシリンダ部１２ａと、オリフィス１２ｂのついたピストン部１２ｃとからなり、シリンダ部１２ａには、開弁用水路１４が形成されている。
この開弁用水路１４の入口１４ａは、シリンダ室１２の上部に開口し、その出口１４ｂは二次側２０のフランジ部20bに開口している。
【００１２】
開弁用水路１４の出口１４ｂは、連通管、即ち、小径ホース２５に接続されている。この小径ホース２５はホース６内をノズルに向かって伸び、手元開弁操作部７ａの押しボタン式の開弁スイッチ２７に接続されている。
【００１３】
付勢手段１６はばね室３０に挿着され、下端で弁体１０の中央部で当接する弁体押さえ３１と、該ばね室３０の頭部を封鎖するオリフィス付きオイル室３３と、を備えている。
【００１４】
弁体押さえ３１には、ピストン３１ａが設けられ、ばね室３０とオイル室３３の間には、両室３０，３３を仕切り、弁押さえ３１が貫通摺動するオリフィスの付いた仕切り３２が設けられ、ピストン３１ａと仕切り３２間にはばね３５が設けられ、かつ、オイルが充填されている。この仕切り３２には、ばね室３０とオイル室３３を結ぶオリフィスが設けられている。
【００１５】
なお、図において、３４は手動式消火器を収納する消火器ボックス、３６は消火器ボックス３４の前傾扉、３７は開閉レバー、をそれぞれ示す。
【００１６】
次に、本実施例の作動について説明する。
火災の際には、消火栓ボックス１の前傾扉３６を手前に引いて開扉し、開閉レバー３７を引いて消火栓弁３を開く。
この時、開閉レバー３７の開操作に連動して図示しない給水ポンプが稼働し、一次側１９に加圧された消火水Ｗが送られてくる。当初、消火水Ｗの圧力は、弁体１０の下面周辺にかかるので、弁体１０は開弁方向に力を受けるが、付勢手段１６のばね３５の下方への力により閉弁を保つ。そのうち、この消火水Ｗは、ピストン部１２ｃのオリフィス１２からシリンダ室１２に入り込むので、弁体１０を下方に押圧して弁閉止を維持する。それと同時に、シリンダ室１２内の水圧により弁体押さえ３１のピストン３１ａがばね３５力に抗して上方に押し上げられる。ばね室３０内のオイルは仕切り３２のオリフィスを通過してオイル室３３に移動しなければならないので、ピストン３１ａの動きは緩慢になる。
次に、ノズル７のハンドル７ｂを握り、消火栓ボックス内に内巻きに収められたホース６を引っ張りながら火源に向かう。この時前記開放弁５は閉じている。そのため、ホース６内には消火水が供給されていないので、空の状態である。従って、ホース６の移動は容易である。
【００１７】
火源の消火位置に到達後、手元開弁操作部７ａの押しボタン式の開弁スイッチ２７を押すと、小径ホース２５の出口が開く。
そうすると、小径ホース２５内の消火水Ｗが該出口から排出されるとともに、シリンダ室１２内の消火水Ｗが開弁用水路１４を通って小径ホース２５に流れ込むが、その流量はオリフィス１２ｂからのシリンダ室１２への流量よりも大きい。そのため、シリンダ室１２内の圧力が低下し、このシリンダ室１２の圧力が弁体１０にかかる閉弁方向の力より、一次側の圧力が弁体１０の下面周辺にかかる開弁方向への力が大きくなる。
一方、シリンダ室１２内の圧力の低下により、ピストン３１ａを押し上げる力よりもばね３５の力が勝るようになり、弁体押さえ３１は下方に移動しようとするが、仕切り３２のオリフィスのオイルの通過で弁体押さえ３１は動きが緩慢にされており、下に下がり切っていないため、その閉弁方向の力がかかっていない。すると、弁体１０が上昇して弁座１８から離れるので、一次側１９の消火水Ｗは二次側２０に流れ、ノズル７から放出される。
このように、開弁スイッチ２７を押すだけで、簡単に一斉開放弁５を開くことができる。
なお、開閉レバー３７を戻して消火栓弁３を閉じると、一次側１９の圧力がシリンダ室１２と同様に大気圧となり、シリンダ室の圧がピストン３１ａを押圧しなくなるので、ばね３５の力により弁体押さえ３１が下がってきて弁体１０を押し下げ、一斉開放弁５は閉じられる。
【００１８】
この発明の第２実施例を図４により説明する。
この実施例と第１実施例（図１〜図３）との相違点は小径ホース２５をホース６の内周面６ａに固定した小径ホース３８、としたことである。
なお、この小径ホース３５を設ける代わりに、ホース６の肉厚部に開弁用水路１４と手元開弁操作部７ａとを結ぶ通水孔を形成してもよい。
【００１９】
この発明の第３実施例を図５により説明する。
この実施例と第１実施例（図１〜図３）との相違点は、開弁用水路１４に設けられた起動用バルブ４０と、手元開弁操作部７ａに設けられ、該バルブ４０を開閉する開閉レバーと、該バルブ４０と開閉レバーとを連結するワイヤ４２と、を備えていることである。
【００２０】
この実施例では、開閉レバーを引くと、ホース６内を通っているワイヤ４２が該起動用バルブ４０を開き、シリンダ室１２の消火水Ｗは開弁用水路１４を通ってホース６内に排出される。
そうすると、該シリンダ室１２内の圧力が低下するので、弁体１０が上昇し開弁する。
【００２１】
この発明の第４実施例を図７により説明する。
この実施例と第３実施例（図５、図６）との相違点は、ワイヤ５２がホース６の外周面６ｂに設けられている。
なお、上記実施例は、減圧開一斉開放弁の例であったが、加圧開一斉開放弁を用いても良い。
この場合は、例えば、常時はばねで閉止している加圧開放弁の弁体と連結するピストンの、加圧されて開弁するシリンダ室に、パイロット弁を介して一次側配管と連通する加圧流路を設ける。パイロット弁の制御室には、先端に開弁スイッチを備えた連通管が接続され、パイロット弁の入口と出口には、それぞれ一次側配管及びシリンダ室に連通する加圧流路が接続されている。
パイロット弁の入口と出口とは、制御室の減圧により連通する構造になっている。放水したいときには、ノズルに設けられた開弁スイッチを開くことによってこのパイロット弁の制御室の水が抜かれ、即ち、減圧されることによってこの加圧流路が開かれ、シリンダ室に一次側の水圧が通るので、一斉開放弁が開弁される。
【００２２】
【発明の効果】
この発明は、以上のように構成したので、電源を用いることなく、簡単に開放弁を開けることができる。
そのため、従来例の如き問題の発生を防止することができる。
【図面の簡単な説明】
【図１】本発明の第１実施例を示す斜視図である。
【図２】減圧開一斉開放弁の拡大縦断面図である。
【図３】図２のII−II線縦断面図である。
【図４】本発明の第２実施例を示す縦断面図で、図３に相当する図である。
【図５】本発明の第３実施例を示す縦断面図である。
【図６】図５のＶ−Ｖ線縦断面図である。
【図７】本発明の第４実施例を示す縦断面図で、図６に相当する図である。
【符号の説明】
１ 消火栓ボックス
２ 消火栓装置
５ 減圧開一斉開放弁
６ ホース
７ ノズル
１４ 開弁用水路
２５ 小径ホース
２７ 開弁スイッチ[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a fire hydrant device that opens a pressure reducing open valve such as a simultaneous open valve or a pressure open valve on the nozzle side.
[0002]
[Prior art]
A number of fire hydrant devices housed in a fire hydrant box are provided in the tunnel. Some of these fire hydrant devices have conventionally been equipped with an electric fire hydrant valve, and this electric fire hydrant valve is connected to a hand valve opening operation switch of a nozzle via an electric path provided inside the hose. When a fire breaks out in the tunnel, pull the front door of the fire hydrant box forward to open it, grab the nozzle, and drag the hose that does not contain fire-extinguishing water toward the fire source. When the hand valve opening operation switch is turned on after reaching the fire extinguishing position, the electric fire hydrant valve opens, the fire hydrant on the primary side of the fire hydrant valve flows into the secondary side, and is discharged from the nozzle through the hose. .
[0003]
[Problems to be solved by the invention]
In the conventional example, since an electric fire hydrant valve is used, a power source is required.
However, if this power supply is used, if the electric circuit breaks or the voltage drops, the electric fire hydrant valve will not open even if the hand valve opening operation switch is turned on. Become.
Therefore, in a fire hydrant device, particularly a fire hydrant device in a tunnel, a low voltage is required and a valve opening means that does not require a power source is required.
[0004]
[Means for Solving the Problems]
In view of the above circumstances, an object of the present invention is to enable opening of an open valve without using a power source.
[0005]
The present invention relates to a fire hydrant apparatus in which a hose is connected to the secondary side of a pressure reducing simultaneous opening valve, and a nozzle is provided at the tip of the hose; a hand-opening operation unit having a switch provided in the nozzle; A communication pipe that connects a hand valve opening operation part and a control chamber of the opening mechanism of the open valve, the communication pipe opening when the switch is turned on, and discharging the fire-extinguishing water in the control chamber to reduce the pressure ; It is characterized by providing;
[0006]
The opening valve of the present invention includes a valve body, a cylinder chamber having a cylinder portion and a piston portion, which is a control chamber of a valve opening mechanism provided on the back surface of the valve body, and a valve opening communicating with the cylinder chamber An irrigation channel and urging means for abutting and pressing the valve body in the valve closing direction, and the cylinder portion is provided with an orifice having a flow rate smaller than the flow rate of the communication pipe. To do.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
A valve opening water channel is provided in the control chamber of the valve opening mechanism of the open valve, the valve opening water channel is extended to the hand valve opening operation part of the nozzle, and a valve opening switch is provided in the hand valve opening operation part.
When the valve opening switch is turned on, the valve opening water channel is opened, the primary fire extinguishing water is discharged and the pressure is reduced, and the pressure reducing opening valve is opened.
[0008]
Further, a valve for opening (start valve) may be provided in the valve opening water channel, and the valve may be connected to a valve opening lever of the hand valve opening operating portion via a wire.
In this case, when the valve opening lever is pulled, the valve opening valve is opened, the valve opening water channel is opened, the fire extinguishing water on the primary side is discharged, the pressure is reduced, and the opening valve is opened.
[0009]
【Example】
A first embodiment of the present invention will be described with reference to FIGS.
A fire hydrant device 2 is provided in the fire hydrant box 1 disposed in the tunnel. This fire hydrant device 2 includes a decompression opening simultaneous open valve 5 that continues to a fire hydrant valve 3 via a pressure regulating valve 4, and a nozzle 7 that continues to the open valve 5 via a hose 6.
[0010]
The decompression opening simultaneous open valve 5 includes a valve body 10, a cylinder chamber 12 which is a control chamber of a valve opening mechanism provided on the back surface of the valve body 10, a valve opening water passage 14 communicating with the cylinder chamber 12, And an urging means 16 for abutting and pressing the valve body 10 in the valve closing direction.
[0011]
The valve body 10 contacts and separates from the valve seat 18 and partitions the primary side 19 and the secondary side 20. The cylinder chamber 12 includes a cylinder portion 12a and a piston portion 12c with an orifice 12b, and a valve opening water passage 14 is formed in the cylinder portion 12a.
The inlet 14a of the valve opening water channel 14 opens to the upper part of the cylinder chamber 12, and the outlet 14b opens to the flange portion 20b of the secondary side 20.
[0012]
The outlet 14 b of the valve opening water channel 14 is connected to a communication pipe, that is, a small diameter hose 25. The small diameter hose 25 extends in the hose 6 toward the nozzle, and is connected to a push button type valve opening switch 27 of the hand valve opening operating portion 7a.
[0013]
The biasing means 16 is inserted into the spring chamber 30, and includes a valve body presser 31 that comes into contact with the center of the valve body 10 at the lower end, and an oil chamber 33 with an orifice that blocks the head of the spring chamber 30. Yes.
[0014]
The valve body presser 31 is provided with a piston 31 a, and between the spring chamber 30 and the oil chamber 33, both chambers 30, 33 are partitioned, and a partition 32 with an orifice through which the valve presser 31 passes and slides is provided. A spring 35 is provided between the piston 31a and the partition 32 and is filled with oil. The partition 32 is provided with an orifice connecting the spring chamber 30 and the oil chamber 33.
[0015]
In the figure, reference numeral 34 denotes a fire extinguisher box for storing a manual fire extinguisher, 36 denotes a forward tilt door of the fire extinguisher box 34, and 37 denotes an opening / closing lever.
[0016]
Next, the operation of this embodiment will be described.
In the event of a fire, the forward tilting door 36 of the fire hydrant box 1 is pulled forward to open, and the open / close lever 37 is pulled to open the fire hydrant valve 3.
At this time, a water supply pump (not shown) is operated in conjunction with the opening operation of the opening / closing lever 37, and the fire-extinguishing water W pressurized to the primary side 19 is sent. Initially, since the pressure of the fire-extinguishing water W is applied to the periphery of the lower surface of the valve body 10, the valve body 10 receives a force in the valve opening direction, but keeps the valve closed by the downward force of the spring 35 of the biasing means 16. Among these, the fire-extinguishing water W enters the cylinder chamber 12 from the orifice 12 of the piston portion 12c, so that the valve body 10 is pressed downward to keep the valve closed. At the same time, the piston 31 a of the valve body holder 31 is pushed upward against the force of the spring 35 by the water pressure in the cylinder chamber 12. Since the oil in the spring chamber 30 must pass through the orifice of the partition 32 and move to the oil chamber 33, the movement of the piston 31a becomes slow.
Next, the handle 7b of the nozzle 7 is grasped, and it goes to the fire source while pulling the hose 6 housed in the inside of the fire hydrant box. At this time, the release valve 5 is closed. For this reason, fire extinguishing water is not supplied into the hose 6 and is empty. Therefore, the hose 6 can be easily moved.
[0017]
After reaching the fire extinguishing position of the fire source, when the push button type valve opening switch 27 of the local valve opening operating portion 7a is pressed, the outlet of the small diameter hose 25 is opened.
Then, the fire-extinguishing water W in the small-diameter hose 25 is discharged from the outlet, and the fire-extinguishing water W in the cylinder chamber 12 flows into the small-diameter hose 25 through the valve opening water passage 14, but the flow rate is from the cylinder 12 through the orifice 12b. The flow rate to the chamber 12 is larger. For this reason, the pressure in the cylinder chamber 12 decreases, and the pressure in the cylinder chamber 12 causes the pressure in the valve closing direction to be applied to the pressure on the primary side by the pressure in the valve body 10. Becomes larger.
On the other hand, the pressure in the cylinder chamber 12 reduces the force of the spring 35 over the force of pushing up the piston 31a, and the valve body presser 31 tries to move downward, but the passage of oil through the orifice of the partition 32 Therefore, the valve body presser 31 is slowed down and does not fully fall down, so that the force in the valve closing direction is not applied. Then, since the valve body 10 rises and separates from the valve seat 18, the fire extinguishing water W on the primary side 19 flows to the secondary side 20 and is discharged from the nozzle 7.
In this way, the simultaneous opening valve 5 can be easily opened by simply pressing the valve opening switch 27.
When the open / close lever 37 is returned and the fire hydrant valve 3 is closed, the pressure on the primary side 19 becomes atmospheric pressure as in the cylinder chamber 12, and the pressure in the cylinder chamber does not press the piston 31a. The body presser 31 comes down and pushes down the valve body 10, and the simultaneous release valve 5 is closed.
[0018]
A second embodiment of the present invention will be described with reference to FIG.
The difference between this embodiment and the first embodiment (FIGS. 1 to 3) is that a small-diameter hose 38 in which the small-diameter hose 25 is fixed to the inner peripheral surface 6 a of the hose 6.
Instead of providing the small-diameter hose 35, a water passage hole that connects the valve opening water channel 14 and the hand valve opening operation unit 7 a may be formed in the thick part of the hose 6.
[0019]
A third embodiment of the present invention will be described with reference to FIG.
The difference between this embodiment and the first embodiment (FIGS. 1 to 3) is that the starting valve 40 provided in the valve opening water channel 14 and the valve opening operating portion 7a are provided to open and close the valve 40. And an opening / closing lever for connecting the valve 40 and the opening / closing lever.
[0020]
In this embodiment, when the open / close lever is pulled, the wire 42 passing through the hose 6 opens the activation valve 40, and the fire extinguishing water W in the cylinder chamber 12 passes through the valve opening water passage 14 and is discharged into the hose 6. The
Then, since the pressure in the cylinder chamber 12 decreases, the valve body 10 rises and opens.
[0021]
A fourth embodiment of the present invention will be described with reference to FIG.
The difference between this embodiment and the third embodiment (FIGS. 5 and 6) is that the wire 52 is provided on the outer peripheral surface 6 b of the hose 6.
In addition, although the said Example was an example of the pressure reduction simultaneous open valve, you may use a pressure open simultaneous open valve.
In this case, for example, a piston connected to a valve body of a pressurization release valve that is normally closed by a spring is connected to a primary side pipe via a pilot valve in a cylinder chamber that is pressurized and opened. A pressure channel is provided. A communication pipe having a valve opening switch at the tip is connected to the control chamber of the pilot valve, and a pressure passage that communicates with the primary side pipe and the cylinder chamber is connected to the inlet and the outlet of the pilot valve, respectively.
The inlet and outlet of the pilot valve are configured to communicate with each other by decompression of the control chamber. When the water is desired to be discharged, the control valve of the pilot valve is drained by opening a valve opening switch provided on the nozzle, that is, the pressure passage is opened by reducing the pressure, and the primary water pressure is applied to the cylinder chamber. Since it passes, the simultaneous release valve is opened.
[0022]
【The invention's effect】
Since the present invention is configured as described above, the release valve can be easily opened without using a power source.
Therefore, it is possible to prevent the occurrence of problems as in the conventional example.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a first embodiment of the present invention.
FIG. 2 is an enlarged longitudinal sectional view of a vacuum open simultaneous opening valve.
3 is a longitudinal sectional view taken along line II-II in FIG.
FIG. 4 is a longitudinal sectional view showing a second embodiment of the present invention and corresponding to FIG.
FIG. 5 is a longitudinal sectional view showing a third embodiment of the present invention.
6 is a vertical cross-sectional view taken along line VV in FIG.
FIG. 7 is a longitudinal sectional view showing a fourth embodiment of the present invention and corresponding to FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Fire hydrant box 2 Fire hydrant apparatus 5 Depressurization opening simultaneous release valve 6 Hose 7 Nozzle 14 Opening water channel 25 Small diameter hose 27 Valve opening switch

Claims (2)

減圧開一斉開放弁の二次側にホースを接続し、該ホースの先端にノズルを設けた消火栓装置において；
前記ノズルに設けられた、スイッチを有する手元開弁操作部と；
前記手元開弁操作部と前記開放弁の開弁機構の制御室とを連結する連通管であって、前記スイッチをオンにすると開放し、前記制御室内の消火用水を排出させて減圧させる連通管と；
を備えていることを特徴とする手元開弁操作型ノズルを有する消火栓装置。 In a fire hydrant apparatus in which a hose is connected to the secondary side of the pressure reducing open simultaneous release valve and a nozzle is provided at the tip of the hose;
A hand-operated valve-opening operation portion provided on the nozzle and having a switch;
A communication pipe that connects the hand valve opening operation unit and a control chamber of the valve opening mechanism of the release valve, the communication pipe that opens when the switch is turned on and discharges the fire-extinguishing water in the control chamber to reduce the pressure. When;
A fire hydrant device having a hand-operated valve-opening type nozzle. 前記開放弁は、弁体と、該弁体の背面に設けられた開弁機構の制御室である、シリンダ部とピストン部を備えたシリンダ室と、該シリンダ室に連通する開弁用水路と、該弁体を閉弁方向に当接押圧する付勢手段と、を備えており、
前記シリンダ部には、前記連通管の流量より少ない流量のオリフイスが設けられていることを特徴とする請求項１記載の消火栓装置。 The open valve is a valve body, a control chamber of a valve opening mechanism provided on the back surface of the valve body, a cylinder chamber having a cylinder portion and a piston portion, a valve opening water passage communicating with the cylinder chamber, Urging means for abutting and pressing the valve body in the valve closing direction, and
The fire hydrant apparatus according to claim 1 , wherein an orifice having a flow rate smaller than a flow rate of the communication pipe is provided in the cylinder portion .
JP2001100610A 2001-03-30 2001-03-30 Fire hydrant device with a hand-operated nozzle Expired - Fee Related JP3975392B2 (en)

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JP6345463B2 (en) * 2014-03-28 2018-06-20 能美防災株式会社 Fire hydrant equipment
JP6501227B2 (en) * 2015-09-28 2019-04-17 能美防災株式会社 Fire hydrant device
JP6501225B2 (en) * 2015-09-28 2019-04-17 能美防災株式会社 Fire hydrant device
JP6538507B2 (en) * 2015-09-28 2019-07-03 能美防災株式会社 Fire hydrant device
JP6501226B2 (en) * 2015-09-28 2019-04-17 能美防災株式会社 Fire hydrant device
JP6894546B2 (en) * 2016-07-15 2021-06-30 ホーチキ株式会社 Fire hydrant device in the tunnel
JP6894695B2 (en) * 2016-12-06 2021-06-30 ホーチキ株式会社 Fire hydrant device and fire hydrant equipment
JP6921513B2 (en) * 2016-12-06 2021-08-18 ホーチキ株式会社 Fire hydrant equipment in the tunnel
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