JP3565599B2 - Automatic water supply - Google Patents

Automatic water supply Download PDF

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Publication number
JP3565599B2
JP3565599B2 JP00090995A JP90995A JP3565599B2 JP 3565599 B2 JP3565599 B2 JP 3565599B2 JP 00090995 A JP00090995 A JP 00090995A JP 90995 A JP90995 A JP 90995A JP 3565599 B2 JP3565599 B2 JP 3565599B2
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JP
Japan
Prior art keywords
air
tank
pipe
pressure tank
valve
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
Application number
JP00090995A
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Japanese (ja)
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JPH08189064A (en
Inventor
明博 山本
健一郎 山下
敏康 谷口
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kubota Corp
Original Assignee
Kubota Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kubota Corp filed Critical Kubota Corp
Priority to JP00090995A priority Critical patent/JP3565599B2/en
Publication of JPH08189064A publication Critical patent/JPH08189064A/en
Application granted granted Critical
Publication of JP3565599B2 publication Critical patent/JP3565599B2/en
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Description

【0001】
【産業上の利用分野】
本発明は、ビル等の上水の配水管路に設けられる自動給水装置に関する。
【0002】
【従来の技術】
ビル等の上水の配水管路に設けられる自動給水装置には、圧力槽を介装するものがある。従来の圧力槽周りの管路構成は、たとえば図2に開示するようなものである。図2において、1は上水および圧縮空気を貯留する圧力槽であり、2は圧力槽1外に配置された空気槽である。圧力槽1と空気槽2との間には、圧力槽1の下部と空気槽2の上部とを連結する第1の配管3が電磁弁4または電動ボール弁を介装して設けられ、圧力槽1の上部と空気槽2の上部とを連結する第2の配管5が逆止弁6を介装して設けられている。空気槽2の底部には電磁弁7または電動ボール弁を介装した排水管8が設けられ、第2の配管5には逆止弁6より空気槽側の位置に、逆止弁9を介装した吸気管10が接続している。第1の配管3、第2の配管5、排水管8、吸気管10はそれぞれ、15A程度の管径を有している。
【0003】
このような管路構成において、図示を省略した電気的制御手段により電磁弁7を閉じるとともに電磁弁4を開くと、圧力槽1内の上水が第1の配管3を通じて空気槽2へ注入され、これに伴い空気槽2内の空気圧が上昇して、空気槽2内の空気が第2の配管5を通じて圧力槽1へ送り込まれる。
【0004】
空気槽2内の空気が圧力槽1から注入された上水によって置換された後に、電気的制御手段により電磁弁4を閉じるとともに電磁弁7を開くと、吸気管10より装置外部の空気が吸入される状態において、空気槽2内の上水が排水管8を通じて排出される。
【0005】
排水が終了した後に電磁弁7を閉じれば、空気槽2の内部に空気が貯留され、圧力槽1の内部に、図示を省略した供給管より供給された上水および圧縮空気が貯留された元の状態となる。
【0006】
【発明が解決しようとする課題】
上記構成において、逆止弁6,9は、圧力槽1内の圧縮空気が空気槽2へ流入したり外部へ流出するのを防止するものであるが、その効果は十分ではなく、圧縮空気のもれはほとんどこれらの逆止弁6,9を通じて起こる。
【0007】
本発明は上記問題を解決するもので、逆止弁の設置をできるだけ低減し、圧力槽からの圧縮空気のもれを防止することを目的とするものである。
【0008】
【課題を解決するための手段】
上記問題を解決するために、本発明の自動給水装置は、上水および圧縮空気を貯留する圧力槽と、圧力槽外に配置された空気槽と、圧力槽と空気槽とに接続して設けられ、第1の開閉弁を介装した適当な大径の連通管と、空気槽の底部に接続して設けられ、第2の開閉弁を介装した適当な大径の排水管と、前記第1の開閉弁および第2の開閉弁の開閉を制御する制御手段とを備え、前記連通管および排水管は、液相と気相とが背反する方向に流動可能な大きさの口径をなすように構成したものである。
【0009】
【作用】
上記構成において、制御手段により第2の開閉弁を閉じるとともに第1の開閉弁を開くと、圧力槽内において圧縮空気により圧せられている上水が連通管を通じて空気槽へ注入され、これに伴い空気槽内の空気圧が上昇する。このとき、連通管は液相と気相とが背反する方向に流動可能な大きさの口径を有しているので、この連通管を通じて空気槽内の空気が圧力槽へ送り込まれる。このようにして1本の連通管によって圧力槽から空気槽への注水と空気槽から圧力槽への空気補給とが行なわれるので、従来のように圧力槽への空気補給のために別の配管を設ける必要はなく、空気もれの最大要因となる逆止弁の使用は回避される。
【0010】
空気槽内の空気が上水によって置換された後に、制御手段により第1の開閉弁を閉じるとともに第2の開閉弁を開くと、排水管は液相と気相とが背反する方向に流動可能な大きさの口径を有しているので、この排水管を通じて、装置外部の空気が吸入される状態において空気槽内の上水が排出される。すなわちこの場合も、1本の排水管によって空気槽内の上水の排出と装置外部からの吸気とが行なわれるので、従来のように空気槽への空気補給のために別の配管を設ける必要はなく、空気もれの要因となる逆止弁の使用は回避される。排水が終了したら、制御手段により第2の開閉弁を閉じる。
【0011】
【実施例】
以下、本発明の一実施例の自動給水装置を図1を参照しながら説明する。
図1において、11は上水および圧縮空気を貯留する圧力槽であり、12は圧力槽11外に配置された空気槽である。圧力槽11と空気槽12とは、一端が圧力槽11の下部に接続するとともに他端が空気槽12の上部に接続する連通管13により連通されており、連通管13に介装して第1の電磁弁14または電動ボール弁が設けられている。連通管13はたとえば32A程度の適当な大径を有していて、連通管13の内部を液相と気相とが背反する方向に流動可能とされている。空気槽12の底部には、たとえば32A程度の適当な大径を有する排水管15が設けられていて、排水管15の内部を液相と気相とが背反する方向に流動可能に構成されている。排水管15には第2の電磁弁16または電動ボール弁が介装されている。第1の電磁弁14および第2の電磁弁16は、電気的制御手段17に連結されている。
【0012】
以下、上記構成における作用を説明する。
制御手段17により電磁弁16を閉じるとともに電磁弁14を開くと、圧力槽11内において圧縮空気により圧せられている上水が連通管13により空気槽12へ注入され、これに伴い空気槽12内の空気圧が上昇して、空気槽12内の空気が圧力槽11へ送り込まれる。このとき、連通管13が上記したような適当な口径を有しているので、圧力槽11内の上水が連通管13を通じて空気槽12へ注入されると同時に、空気槽12内の空気が連通管13を通じて圧力槽11へ送り込まれる。
【0013】
空気槽12内の空気が上水によって置換された後に、制御手段17により電磁弁14を閉じるとともに電磁弁16を開くと、この場合も、排水管15が液相と気相とが背反する方向に流動可能な大きさの口径を有しているので、排水管15を通じて装置外部の空気が吸入されつつ空気槽12内の上水が排出される。上水の排出が終了して空気槽12内に空気が充満したら、制御手段17により第2の電磁弁を閉じればよい。
【0014】
このようにして、従来のように空気補給のための配管を別途設けることなく、空気槽12内の空気を圧力槽11へ送り込んだり、装置外部の空気を空気槽12内へ吸入できるので、従来空気補給の配管に設けていた逆止弁も不要になり、空気もれの要因を排除して安定な空気補給を行うことができる。なお、空気補給をスムーズに行うためには、連通管13および排水管15を比較的短いものとするのが好ましい。
【0015】
【発明の効果】
以上のように本発明によれば、圧力槽と空気槽とに連通する適当な大径の連通管を設けるとともに、空気槽の底部に適当な大径の排水管を設けるという簡略な構成により、従来別途設けていた空気補給のための配管を不要とすることができ、圧力槽からの圧縮空気のもれの要因となる逆止弁の使用を回避できる。
【図面の簡単な説明】
【図1】本発明の一実施例の自動給水装置の概略構成を示した説明図である。
【図2】従来の自動給水装置の概略構成を示した説明図である。
【符号の説明】
11 圧力槽
12 空気槽
13 連通管
14 第1の電磁弁
15 排水管
16 第2の電磁弁
17 制御手段
[0001]
[Industrial applications]
TECHNICAL FIELD The present invention relates to an automatic water supply device provided in a water distribution pipe of a building or the like.
[0002]
[Prior art]
2. Description of the Related Art Some automatic water supply devices provided in water distribution pipes of buildings or the like are provided with a pressure tank. A conventional pipe configuration around a pressure vessel is, for example, as disclosed in FIG. In FIG. 2, reference numeral 1 denotes a pressure tank that stores tap water and compressed air, and 2 denotes an air tank that is disposed outside the pressure tank 1. Between the pressure tank 1 and the air tank 2, a first pipe 3 connecting the lower part of the pressure tank 1 and the upper part of the air tank 2 is provided with a solenoid valve 4 or an electric ball valve interposed therebetween. A second pipe 5 connecting the upper part of the tank 1 and the upper part of the air tank 2 is provided with a check valve 6 interposed. A drain pipe 8 provided with a solenoid valve 7 or an electric ball valve is provided at the bottom of the air tank 2, and the second pipe 5 has a check valve 9 at a position closer to the air tank than the check valve 6. The mounted intake pipe 10 is connected. Each of the first pipe 3, the second pipe 5, the drain pipe 8, and the intake pipe 10 has a pipe diameter of about 15A.
[0003]
In such a pipe configuration, when the electromagnetic valve 7 is closed and the electromagnetic valve 4 is opened by an electric control means (not shown), the clean water in the pressure tank 1 is injected into the air tank 2 through the first pipe 3. Accordingly, the air pressure in the air tank 2 increases, and the air in the air tank 2 is sent into the pressure tank 1 through the second pipe 5.
[0004]
After the air in the air tank 2 is replaced by the clean water injected from the pressure tank 1, when the electromagnetic valve 4 is closed and the electromagnetic valve 7 is opened by the electric control means, air outside the device is sucked from the intake pipe 10. In this state, the water in the air tank 2 is discharged through the drain pipe 8.
[0005]
If the electromagnetic valve 7 is closed after drainage is completed, air is stored in the air tank 2, and water and compressed air supplied from a supply pipe (not shown) are stored in the pressure tank 1. State.
[0006]
[Problems to be solved by the invention]
In the above configuration, the check valves 6 and 9 are for preventing the compressed air in the pressure tank 1 from flowing into the air tank 2 and flowing out, but the effect is not sufficient, and Leakage occurs mostly through these check valves 6,9.
[0007]
The present invention has been made to solve the above problems, and has as its object to reduce the installation of a check valve as much as possible and to prevent compressed air from leaking from a pressure tank.
[0008]
[Means for Solving the Problems]
In order to solve the above problems, the automatic water supply apparatus of the present invention is provided with a pressure tank for storing tap water and compressed air, an air tank disposed outside the pressure tank, and connected to the pressure tank and the air tank. A suitable large-diameter communication pipe provided with a first on-off valve, a suitable large-diameter drain pipe provided connected to the bottom of the air tank and provided with a second on-off valve, Control means for controlling opening and closing of the first on-off valve and the second on-off valve, wherein the communication pipe and the drain pipe have a diameter large enough to allow the liquid phase and the gas phase to flow in opposite directions. It is configured as follows.
[0009]
[Action]
In the above configuration, when the second on-off valve is closed and the first on-off valve is opened by the control means, the clean water pressurized by the compressed air in the pressure tank is injected into the air tank through the communication pipe. Accordingly, the air pressure in the air tank increases. At this time, since the communication pipe has a diameter large enough to allow the liquid phase and the gas phase to flow in opposite directions, the air in the air tank is sent into the pressure tank through the communication pipe. In this way, the water supply from the pressure tank to the air tank and the air supply from the air tank to the pressure tank are performed by one communication pipe. There is no need to provide a check valve, and the use of a check valve, which is a major cause of air leakage, is avoided.
[0010]
After the air in the air tank is replaced by clean water, when the first opening / closing valve is closed and the second opening / closing valve is opened by the control means, the drain pipe can flow in a direction in which the liquid phase and the gas phase are in opposition. Since it has a large diameter, the water in the air tank is discharged through this drain pipe in a state where air outside the apparatus is sucked. That is, also in this case, the drainage of the water in the air tank and the suction from the outside of the apparatus are performed by one drain pipe, so that it is necessary to provide another pipe for supplying air to the air tank as in the conventional case. And the use of a check valve which causes air leakage is avoided. When drainage is completed, the second on-off valve is closed by the control means.
[0011]
【Example】
Hereinafter, an automatic water supply apparatus according to an embodiment of the present invention will be described with reference to FIG.
In FIG. 1, reference numeral 11 denotes a pressure tank that stores tap water and compressed air, and 12 denotes an air tank that is disposed outside the pressure tank 11. The pressure tank 11 and the air tank 12 are connected to each other by a communication pipe 13 having one end connected to a lower part of the pressure tank 11 and the other end connected to an upper part of the air tank 12. One electromagnetic valve 14 or an electric ball valve is provided. The communication pipe 13 has an appropriate large diameter of, for example, about 32 A, and is configured to be able to flow in the communication pipe 13 in a direction in which a liquid phase and a gas phase are opposed to each other. A drain pipe 15 having an appropriate large diameter of, for example, about 32A is provided at the bottom of the air tank 12, and the inside of the drain pipe 15 is configured so that a liquid phase and a gas phase can flow in opposite directions. I have. The drain pipe 15 is provided with a second solenoid valve 16 or an electric ball valve. The first solenoid valve 14 and the second solenoid valve 16 are connected to an electric control unit 17.
[0012]
Hereinafter, the operation of the above configuration will be described.
When the electromagnetic valve 16 is closed and the electromagnetic valve 14 is opened by the control means 17, the clean water pressurized by the compressed air in the pressure tank 11 is injected into the air tank 12 by the communication pipe 13. The internal air pressure rises, and the air in the air tank 12 is sent to the pressure tank 11. At this time, since the communication pipe 13 has an appropriate diameter as described above, the water in the pressure tank 11 is injected into the air tank 12 through the communication pipe 13 and the air in the air tank 12 is simultaneously discharged. It is sent to the pressure tank 11 through the communication pipe 13.
[0013]
When the solenoid valve 14 is closed and the solenoid valve 16 is opened by the control means 17 after the air in the air tank 12 is replaced by clean water, the drain pipe 15 is also in a direction in which the liquid phase and the gas phase are opposed to each other. Therefore, the water inside the air tank 12 is discharged while the air outside the apparatus is sucked in through the drain pipe 15. When the discharge of clean water is completed and the air tank 12 is filled with air, the control unit 17 may close the second solenoid valve.
[0014]
In this manner, the air in the air tank 12 can be sent to the pressure tank 11 and the air outside the device can be sucked into the air tank 12 without separately providing a pipe for supplying air as in the related art. The check valve provided in the air supply pipe is not required, and the air leakage can be eliminated and stable air supply can be performed. In order to smoothly supply air, it is preferable that the communication pipe 13 and the drain pipe 15 be relatively short.
[0015]
【The invention's effect】
As described above, according to the present invention, an appropriate large-diameter communication pipe communicating with the pressure tank and the air tank is provided, and a simple large-diameter drain pipe is provided at the bottom of the air tank. Piping for air supply, which has been separately provided in the related art, can be eliminated, and the use of a check valve that causes leakage of compressed air from the pressure tank can be avoided.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram showing a schematic configuration of an automatic water supply device according to one embodiment of the present invention.
FIG. 2 is an explanatory diagram showing a schematic configuration of a conventional automatic water supply device.
[Explanation of symbols]
Reference Signs List 11 pressure tank 12 air tank 13 communication pipe 14 first solenoid valve 15 drain pipe 16 second solenoid valve 17 control means

Claims (1)

上水および圧縮空気を貯留する圧力槽と、圧力槽外に配置された空気槽と、圧力槽と空気槽とに接続して設けられ、第1の開閉弁を介装した適当な大径の連通管と、空気槽の底部に接続して設けられ、第2の開閉弁を介装した適当な大径の排水管と、前記第1の開閉弁および第2の開閉弁の開閉を制御する制御手段とを備え、前記連通管および排水管は、液相と気相とが背反する方向に流動可能な大きさの口径をなすことを特徴とする自動給水装置。A pressure tank for storing tap water and compressed air, an air tank disposed outside the pressure tank, and an appropriate large-diameter valve connected to the pressure tank and the air tank and having a first on-off valve interposed therebetween. A communication pipe, a drain pipe having a suitable large diameter provided with a second open / close valve connected to the bottom of the air tank, and controlling opening / closing of the first open / close valve and the second open / close valve; An automatic water supply device comprising a control means, wherein the communication pipe and the drain pipe have a diameter large enough to allow a liquid phase and a gas phase to flow in opposite directions.
JP00090995A 1995-01-09 1995-01-09 Automatic water supply Expired - Fee Related JP3565599B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP00090995A JP3565599B2 (en) 1995-01-09 1995-01-09 Automatic water supply

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP00090995A JP3565599B2 (en) 1995-01-09 1995-01-09 Automatic water supply

Publications (2)

Publication Number Publication Date
JPH08189064A JPH08189064A (en) 1996-07-23
JP3565599B2 true JP3565599B2 (en) 2004-09-15

Family

ID=11486812

Family Applications (1)

Application Number Title Priority Date Filing Date
JP00090995A Expired - Fee Related JP3565599B2 (en) 1995-01-09 1995-01-09 Automatic water supply

Country Status (1)

Country Link
JP (1) JP3565599B2 (en)

Also Published As

Publication number Publication date
JPH08189064A (en) 1996-07-23

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