JPH0121353B2 - - Google Patents
Info
- Publication number
- JPH0121353B2 JPH0121353B2 JP57008912A JP891282A JPH0121353B2 JP H0121353 B2 JPH0121353 B2 JP H0121353B2 JP 57008912 A JP57008912 A JP 57008912A JP 891282 A JP891282 A JP 891282A JP H0121353 B2 JPH0121353 B2 JP H0121353B2
- Authority
- JP
- Japan
- Prior art keywords
- air
- water level
- tank
- water
- pump
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
- F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
- F04F5/54—Installations characterised by use of jet pumps, e.g. combinations of two or more jet pumps of different type
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Reciprocating Pumps (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
【発明の詳細な説明】
本発明は圧力タンク式給水装置の空気補給装置
に係り、さらに詳しく述べると、空気槽内に空気
取り入れ逆止め弁を介して空気を取り入れた後、
その空気槽中に給水管路または圧力タンク内の高
圧力水を供給することにより、空気槽内の空気を
圧力タンクに補給すべくなした圧力タンク式給水
装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an air supply device for a pressure tank type water supply device, and more specifically, after taking air into an air tank through an air intake check valve,
The present invention relates to a pressure tank type water supply device that supplies air in the air tank to the pressure tank by supplying high pressure water in the water supply pipe or the pressure tank into the air tank.
従来のこの種の給水装置は、ポンプの駆動によ
つて圧力タンク内へ水を貯え、その水を被給水側
へ給水できるようにしているが、圧力タンク内の
空気は水と一緒に流出し、あるいは水に溶け込ん
で減少するので、圧力タンク内へ空気を補給する
必要がある。 Conventional water supply devices of this type use a pump to store water in a pressure tank and supply the water to the water recipient, but the air in the pressure tank flows out together with the water. Otherwise, it dissolves in water and decreases, so it is necessary to replenish air into the pressure tank.
その場合、第１図に示すように自動弁１３を閉
め、自動弁１６を開けて空気槽８内の水を自動弁
１６を経由して排水管１８より大気中に放流し、
代わつて外気を空気取り入れ逆止め弁１１より空
気槽８内へ取り込む。次に自動弁１３，１６を
夫々逆動作させて、圧力タンク５内の水を空気槽
８内へ流入させる。 In that case, as shown in FIG. 1, the automatic valve 13 is closed, the automatic valve 16 is opened, and the water in the air tank 8 is discharged into the atmosphere from the drain pipe 18 via the automatic valve 16.
Instead, outside air is taken into the air tank 8 through the air intake check valve 11. Next, the automatic valves 13 and 16 are respectively operated in reverse to cause the water in the pressure tank 5 to flow into the air tank 8.
この流入した水により空気槽８内の空気は空気
補給管１０、空気補給用逆止め弁９を通つて圧力
タンク５内へ押し込まれて補給されていくもので
ある。 The air in the air tank 8 is forced into the pressure tank 5 through the air supply pipe 10 and the air supply check valve 9 by this inflow of water, and is replenished.
しかしながら、従来の空気補給構造において
は、空気槽中に流入した水は空気を圧力タンク内
へ送つた後、外部に排出して捨てられているので
無駄な水となる問題があつた。 However, in the conventional air replenishment structure, the water that has flowed into the air tank is discharged outside and discarded after the air is sent into the pressure tank, so there is a problem that the water is wasted.
この様な問題点を解決するために、第２図にも
示してあるように（第２図は本発明の実施例であ
るが、）ジエツトポンプの吸込口１７ａを、空気
槽８の下部に、駆動流入側１７ｂを圧力タンク５
に接続し、吐出し口１７ｅから吐出された水を、
自動弁１６を介して受水槽１９内に戻すことが実
開昭56−6993号公報で提案されている。 In order to solve this problem, as shown in FIG. 2 (FIG. 2 is an embodiment of the present invention), the suction port 17a of the jet pump is placed at the bottom of the air tank 8. The drive inflow side 17b is connected to the pressure tank 5
The water discharged from the outlet 17e is connected to
It has been proposed in Japanese Utility Model Application Publication No. 56-6993 to return the water to the water receiving tank 19 via the automatic valve 16.
しかし、これで提案されているものでは、自動
弁１６が、空気槽８内の水がジエツトポンプによ
つて完全に吐き出された後も開いていると、空気
槽８の中に折角取り込まれた空気を排出してしま
うことになり、逆に自動弁１６があまりに早く閉
じてしまうと、空気槽の中に十分な空気が取り込
まれないことになる。つまり、自動弁１６の開い
ている時間を望ましい値に設定する必要がある
が、その様に設定することは非常に難しかつた。 However, in the proposed system, if the automatic valve 16 remains open even after the water in the air tank 8 has been completely discharged by the jet pump, the air that has been taken into the air tank 8 will be removed. On the other hand, if the automatic valve 16 closes too early, not enough air will be drawn into the air tank. In other words, it is necessary to set the time during which the automatic valve 16 is open to a desired value, but it is extremely difficult to do so.
本発明は、これ等の点を改良するものであつ
て、その目的とするところは、空気槽内に、せつ
かく取り込まれた空気が排水管を通つて無駄に排
出されることの無い圧力タンク式給水装置を提供
することにある。 The present invention is intended to improve these points, and its purpose is to create a pressure tank that prevents the air that has been taken in into the air tank from being wastefully discharged through the drain pipe. The objective is to provide a type water supply device.
すなわち、本発明に於いては、空気槽内の水を
ジエツトポンプで受水槽内に戻し、変わつて空気
槽内に空気を取り込み、この空気を圧力タンク内
に供給する圧力タンク式給水装置に於いて、空気
槽内の第１水位とこの第１水位よりも高い第２水
位を検出する水位検出手段と、この水位検出手段
が前記第１水位を検出したことに基づいて計時を
開始し、前記空気槽内の水位が前記第２水位以上
になるであろう所定時間後に計時を終了する計時
手段と、前記水位検出手段が前記第１水位を検出
したことに基づいて前記自動弁を閉じ、前記水位
検出手段が前記第２水位を検出し、且つ前記計時
手段が計時を終了したことに基づいて前記自動弁
を開ける自動弁制御手段とを設ける。 That is, in the present invention, in a pressure tank type water supply device, water in an air tank is returned to a water receiving tank using a jet pump, air is taken into the air tank, and this air is supplied into a pressure tank. , water level detection means for detecting a first water level in the air tank and a second water level higher than the first water level; a timer for terminating time measurement after a predetermined period of time when the water level in the tank is expected to be equal to or higher than the second water level; and a timer for closing the automatic valve based on the water level detection means detecting the first water level, and automatic valve control means for opening the automatic valve based on the detection means detecting the second water level and the timing means finishing timing.
この様に構成すると、空気槽内の水位が第２水
位に達し、更に計時手段が計時を終了したことに
よつて自動弁が開き、それから空気槽内の水位が
第１水位まで低下すると自動弁が閉じる。従つ
て、自動弁が空気槽内の水が完全に吐き出された
後も開いていて、空気槽の中に折角取り込まれた
空気を排出してしまうことが無くなる。また、逆
に空気槽内の水位が第２水位越え、更に計時手段
が計時を終了するまで、自動弁は閉じているか
ら、空気槽内の空気を完全に圧力タンク内に送り
込むことが出来る。 With this configuration, the automatic valve opens when the water level in the air tank reaches the second water level and the timing means finishes timing, and then when the water level in the air tank drops to the first water level, the automatic valve opens. closes. Therefore, the automatic valve remains open even after the water in the air tank is completely discharged, and the air that has been taken into the air tank is no longer discharged. On the other hand, the automatic valve remains closed until the water level in the air tank exceeds the second water level and the timing means finishes counting, so that the air in the air tank can be completely fed into the pressure tank.
次に、本発明の実施例を添付図面について説明
する。 Next, embodiments of the present invention will be described with reference to the accompanying drawings.
第２図において、受水槽１９内の水は吸込管２
０及び仕切弁２１を経てポンプ１に流入してい
る。ポンプ１は、主逆止め弁２、仕切弁３、送水
管４によつて圧力タンク５に連結されている。該
圧力タンク５は、内部に空気溜りを有しており、
その空気圧の変化によつて圧力スイツチ６が前記
ポンプ１の駆動及び停止を行なうべく作動し、ポ
ンプ１の駆動によつて受水槽１９の水が圧力タン
ク５内に送り込まれる。また、圧力タンク５内の
水位が規定水位より低下しようとすると、排気弁
７が圧力タンク５内の空気を外部に排出する。こ
れによつて水位の下限（LWL）が規定される。
２３は圧力タンク５内の水を給水するための給水
管、２４は仕切弁である。 In FIG. 2, water in the water tank 19 is transferred to the suction pipe 2.
0 and flows into the pump 1 via the gate valve 21. The pump 1 is connected to a pressure tank 5 by a main check valve 2, a gate valve 3, and a water pipe 4. The pressure tank 5 has an air pocket inside,
The pressure switch 6 operates to drive and stop the pump 1 due to the change in air pressure, and water in the water tank 19 is sent into the pressure tank 5 by driving the pump 1. Further, when the water level in the pressure tank 5 is about to drop below the specified water level, the exhaust valve 7 discharges the air in the pressure tank 5 to the outside. This defines the lower water level limit (LWL).
23 is a water supply pipe for supplying water in the pressure tank 5, and 24 is a gate valve.
なお、第２図に示した実施例では送水管４を圧
力タンク５に連結し、ポンプ１からの揚水を全て
圧力タンク５内に給水した後、この圧力タンク５
に連結した給水管２３を通して給配水を行なつた
が、これは送水管４と給水管２３とを直接接続
し、これらの給水管路中に圧力タンク５を接続し
ても良く、また、第２図において、送水管４と給
水管２３とをバイパス分岐管を用いてバイパス接
続することもできる。 In the embodiment shown in FIG. 2, the water pipe 4 is connected to the pressure tank 5, and after all the pumped water from the pump 1 is supplied into the pressure tank 5,
Water is supplied and distributed through the water supply pipe 23 connected to the water supply pipe 23, but the water supply pipe 4 and the water supply pipe 23 may be directly connected and the pressure tank 5 may be connected between these water supply pipes. In FIG. 2, the water supply pipe 4 and the water supply pipe 23 can also be connected by bypass using a bypass branch pipe.
一方、空気槽８は、その近傍に空気取り入れ逆
止め弁１１を有しており、この空気取り入れ逆止
め弁１１を通して空気槽８内に大気を取り込む。 On the other hand, the air tank 8 has an air intake check valve 11 in its vicinity, and atmospheric air is taken into the air tank 8 through the air intake check valve 11.
空気槽８の頂部８ｂは、圧力タンク５内の空気
補給口５ｂまでの空気補給用逆止め弁９を備えた
空気補給管１０によつて連結する。空気槽８の下
部８ａはジエツトポンプ１７の吸込側１７ａと連
結し、前記ジエツトポンプ１７の駆動流入側１７
ｂは給水管１４を介してポンプ１の下流側である
給水管路または圧力タンク５の取出し口５ａなど
の高圧力水源側と連結し、かつ該ジエツトポンプ
の吐出し口１７ｅは自動弁１６を備えた排水管１
８に連結し、その排水管18を逆止め弁２より上流
側である吐出し口１ｂ、または低圧力水源側であ
るポンプ１の吸込口１ａに接続したものである。
なお排水管１８は受水槽１９内に配管しても良
い。 The top 8b of the air tank 8 is connected to the air supply port 5b in the pressure tank 5 by an air supply pipe 10 equipped with a check valve 9 for air supply. The lower part 8a of the air tank 8 is connected to the suction side 17a of the jet pump 17, and is connected to the driving inflow side 17 of the jet pump 17.
b is connected to a high pressure water source such as a water supply pipe downstream of the pump 1 or an outlet 5a of the pressure tank 5 via a water supply pipe 14, and the discharge port 17e of the jet pump is equipped with an automatic valve 16. drain pipe 1
8, and its drain pipe 18 is connected to the discharge port 1b on the upstream side of the check valve 2, or to the suction port 1a of the pump 1 on the low pressure water source side.
Note that the drain pipe 18 may be installed inside the water receiving tank 19.
さらに空気槽８内には、この空気槽８内の水位
を検出するための水位検出手段２５を設ける。水
位検出手段２５は前記空気槽８内の空気がジエツ
トポンプ１７の作動時にポンプ１内へ出ていかな
いように、第３図に詳しく示すその下限水位１―
１、つまり第１水位E2を検出するものである。
第４図の自動弁制御手段に於いて、PSは圧力タ
ンク５に備わる圧力スイツチ６の接点、FSは空
気槽８内に備わる水位検出手段２５の検出信号に
より動作する液面リレー、FSaは空気槽８内の水
位が第２水位であるE1以上に成つたときに閉じ、
その後水位が第１水位であるE2まで低下するま
では閉じており、E2以下に成つて初めて開路す
るヒステリシス特性を持つた液面リレーFSの内
部接点である。第２水位E1は第１水位E2よりも
高い。Ｍはポンプ駆動用モートルの開閉器、Ma
はその付勢時閉路接点、SVX1及びSVX2はリレ
ーであり、SVX1aはリレーSVX1の自己保持接
点。SVX1b，SVX2bはそれぞれリレーSVX1，
SVX2の付勢時開路接点。SVは自動弁１６のコ
イルであつて、自動弁１６はこのコイルが付勢状
態にあるときに開く。T1は計時手段としてのタ
イマであつて、T1bはその一定時間後に開路する
時限接点を示す。このタイマT1は、水位検出手
段２５が第１水位E2を検出したことに基づいて
計時を開始して接点T1bを閉じ、空気槽８内の水
位が第２水位E1以上になるであろう所定時間後
に計時を終了し、接点T1bを開くように設定して
ある。 Further, inside the air tank 8, a water level detection means 25 for detecting the water level in the air tank 8 is provided. In order to prevent the air in the air tank 8 from flowing into the pump 1 when the jet pump 17 is operated, the water level detection means 25 detects its lower limit water level 1-- as shown in detail in FIG.
1, that is, the first water level E2 .
In the automatic valve control means shown in FIG. 4, PS is a contact point of a pressure switch 6 provided in a pressure tank 5, FS is a liquid level relay operated by a detection signal from a water level detection means 25 provided in an air tank 8, and FSa is an air It closes when the water level in tank 8 reaches the second water level E1 or higher.
This is the internal contact of the liquid level relay FS, which has a hysteresis characteristic and remains closed until the water level drops to the first water level, E2 , and opens only when the water level drops below E2 . The second water level E 1 is higher than the first water level E 2 . M is the pump drive motor switch, Ma
is its energized close contact, SVX 1 and SVX 2 are relays, and SVX 1 a is the self-holding contact of relay SVX 1 . SVX 1 b and SVX 2 b are relays SVX 1 and SVX 2 b, respectively.
SVX 2 open contact when energized. SV is a coil of automatic valve 16, and automatic valve 16 opens when this coil is in the energized state. T 1 is a timer as a timing means, and T 1 b indicates a time contact that opens after a certain period of time. This timer T1 starts timing based on the detection of the first water level E2 by the water level detection means 25, closes the contact T1b , and the water level in the air tank 8 becomes equal to or higher than the second water level E1 . The timing is set to end after a predetermined time, and the contact T 1 b is opened.
いま、ポンプ１が運転中であり、空気槽８内の
水位が第３図に示す第２水位E1以上であり、液
面リレーFSの接点FSaが閉じているとする。こ
の状態でタイマ接点T1bが開くと、接点SVX2bが
閉じコイルSVが付勢される。コイルSVの付勢に
依つて自動弁１６が開き、圧力タンク５からの高
圧力水が取り出し口５ａより、給水管１４、駆動
流入側１７ｂを経てジエツトポンプ１７内に流入
し、高速の噴流になる。これにより、空気槽８内
の水を吸込側１７ａより吸引するから、空気取り
入れ弁１１が開き、ここから外部の空気が空気槽
８内へ入る。そしてジエツトポンプ１７中を通過
する水を自動弁１６、排水管１８を経てポンプ１
の吸込口１ａ又は吐出し口１ｂに還流する。 Assume that the pump 1 is now in operation, the water level in the air tank 8 is higher than the second water level E1 shown in FIG. 3, and the contact FSa of the liquid level relay FS is closed. When timer contact T 1 b opens in this state, contact SVX 2 b closes and coil SV is energized. The automatic valve 16 is opened by the energization of the coil SV, and high pressure water from the pressure tank 5 flows into the jet pump 17 from the outlet 5a, through the water supply pipe 14 and the drive inflow side 17b, and becomes a high-speed jet. . As a result, the water in the air tank 8 is sucked from the suction side 17a, so the air intake valve 11 opens and outside air enters the air tank 8 from here. The water passing through the jet pump 17 is then passed through the automatic valve 16 and the drain pipe 18 to the pump 1.
It is refluxed to the suction port 1a or the discharge port 1b.
このようにして、空気槽８内の水位が前記空気
槽の下限水位である第１水位E2まで低下すると
水位検出手段２５がこれを検出して液面リレー
FSの接点FSaが開き、リレーSVの付勢が解かれ
て自動弁１６が閉まる。これによつて、排水管１
８から放出される高圧力水は止まる。 In this way, when the water level in the air tank 8 drops to the first water level E2 , which is the lower limit water level of the air tank, the water level detection means 25 detects this and the liquid level relay
Contact FSa of FS opens, relay SV is deenergized, and automatic valve 16 closes. With this, drain pipe 1
The high pressure water released from 8 will stop.
接点FSaが開くことによつてリレーSVX1の付
勢が解かれるから、接点SVX1bが閉じ、タイマ
T1は計時を開始する。更にリレーSVX2が付勢状
態になり、その接点SVX2bが開く。 When contact FSa opens, relay SVX 1 is deenergized, so contact SVX 1 b closes and the timer starts.
T 1 starts timing. Furthermore, relay SVX 2 becomes energized and its contact SVX 2 b opens.
自動弁１６が閉まると、圧力タンク５内の高圧
力水は取出し口５ａから、給水管１４を経てジエ
ツトポンプ１７の駆動流入側１７ｂへ流入する。
流入した高圧力水は吸込口１７ａへ逆流して空気
槽８内へ流入する。空気槽８内の空気はこの流入
した圧力水により空気補給管１０、逆止め弁９を
通つて圧力タンク５内へ押し込まれるものであ
る。 When the automatic valve 16 closes, the high-pressure water in the pressure tank 5 flows from the outlet 5a, through the water supply pipe 14, into the drive inlet side 17b of the jet pump 17.
The high pressure water that has flowed in flows back into the suction port 17a and flows into the air tank 8. The air in the air tank 8 is forced into the pressure tank 5 through the air supply pipe 10 and the check valve 9 by the inflowing pressure water.
やがて水位検出手段２５は前記空気槽８内の第
２水位E1を検出し、液面リレーFSの接点FSaが
閉じる。そしてタイマーT1が計時を終了すると、
接点T1bが開き、リレーSVX2の付勢が解かれて、
その接点SVX2b閉じ、旧に復する。 Eventually, the water level detection means 25 detects the second water level E1 in the air tank 8, and the contact FSa of the liquid level relay FS closes. And when timer T 1 finishes timing,
Contact T 1 b opens, relay SVX 2 is deenergized,
Its contact SVX 2 b closes and returns to the previous state.
このように、本実施例に於いては、空気槽８内
の水をジエツトポンプ１７により吸引する際に、
空気槽８内の下限水位を検出して作動を停止する
ので空気槽８内の空気が無駄に消費されることが
無い。 In this way, in this embodiment, when the water in the air tank 8 is sucked by the jet pump 17,
Since the lower limit water level in the air tank 8 is detected and the operation is stopped, the air in the air tank 8 is not wasted.
なお、排水管１８を吐出し口１ｂに接続する場
合には、自動弁１６はポンプ１の停止時に開ける
ようにするものである。この場合には、第４図に
示した制御回路のポンプ開閉器の接点Maを付勢
時開路接点にすれば良い。 Note that when the drain pipe 18 is connected to the discharge port 1b, the automatic valve 16 is opened when the pump 1 is stopped. In this case, the contact Ma of the pump switch in the control circuit shown in FIG. 4 may be made an open contact when energized.
水位検出手段２５はフロート式、あるいは静電
式のものを利用することができる。また、前記実
施例においては、自動弁の開動作をポンプの始
動、あるいは、停止動作と連動して行なうように
自動弁制御手段を構成したが、排水管１８を貯水
槽１９あるいは吸込管２０に戻すような場合は、
ポンプ１の運転状態にかかわらず自動弁１６の開
閉動作を行なうように、例えば一定時間間隔で自
動弁１６の開閉動作を行なうように構成すること
ができる。 The water level detection means 25 can be of a float type or an electrostatic type. Furthermore, in the embodiment described above, the automatic valve control means was constructed so that the opening operation of the automatic valve was performed in conjunction with the starting or stopping operation of the pump. If you want to return it,
The automatic valve 16 can be configured to open and close, for example, at fixed time intervals, regardless of the operating state of the pump 1.
以上延べたように、本発明によれば、自動弁を
使用した簡単な構成で空気槽から排出した水を再
利用することができるので、無駄に捨てることが
なくなり、非常に有効である。さらに、第１水位
と第２水位とを検出する水位検出手段とタイマと
の働きにより、空気槽内に十分空気を取り込むこ
とができるので、圧力タンク内に効率良く空気を
供給することができる。 As described above, according to the present invention, the water discharged from the air tank can be reused with a simple configuration using an automatic valve, so that water is not wasted and is very effective. Furthermore, the timer and the water level detecting means for detecting the first water level and the second water level can sufficiently take in air into the air tank, so that air can be efficiently supplied into the pressure tank.
第１図は従来例を示す給水装置の全体図、第２
図は本発明の一つの実施例を示す給水装置の全体
図、第３図は空気槽と水位検出手段との関係を示
す略図、第４図は自動弁制御手段の一例を示すシ
ーケンス図である。
１……ポンプ、５……圧力タンク、８……空気
槽、９……空気補給用逆止め弁、１０……空気補
給管、１１……空気取り入れ弁、１４……給水
管、１６……自動弁、１７……ジエツトポンプ、
１７ａ……吸込側、１７ｂ……駆動流入側、１７
ｅ……吐出し側、１８……排水管、２５……水位
検出手段、E2……第１水位、E1……第２水位、
T1……計時手段。
Figure 1 is an overall view of a conventional water supply system;
The figure is an overall view of a water supply device showing one embodiment of the present invention, FIG. 3 is a schematic diagram showing the relationship between an air tank and water level detection means, and FIG. 4 is a sequence diagram showing an example of automatic valve control means. . 1... Pump, 5... Pressure tank, 8... Air tank, 9... Check valve for air supply, 10... Air supply pipe, 11... Air intake valve, 14... Water supply pipe, 16... automatic valve, 17...jet pump,
17a...Suction side, 17b...Drive inflow side, 17
e...Discharge side, 18...Drain pipe, 25...Water level detection means, E2 ...First water level, E1 ...Second water level,
T 1 ...Timekeeping means.
Claims (1)
管路中に設けてあり、前記ポンプに依つて吐出さ
れた水を貯える圧力タンクと、空気槽と、この空
気槽の中に外気を取り込む空気取り入れ逆止め弁
と、前記空気槽の上部と前記圧力タンク内とを連
通する空気補給管と、該空気補給管の途中に設け
てあり、前記空気槽から前記圧力タンク内への空
気の補給を許容する空気補給用逆止め弁と、前記
空気槽内の水を排出するジエツトポンプとを有し
ており、このジエツトポンプの駆動流入側は前記
ポンプよりも下流側に連結してあり、吸い込み側
は前記空気槽内の下方に連結してあり、吐出し側
は自動弁を介して前記ポンプの吐出し側に設けて
ある主逆止め弁よりも上流側に連結してあるもの
に於いて、前記空気槽内の第１水位と該第１水位
よりも高い第２水位を検出する水位検出手段と、
この水位検出手段が前記第１水位を検出したこと
に基づいて計時を開始し、前記空気槽内の水位が
前記第２水位以上になるであろう所定時間後に計
時を終了する計時手段と、前記水位検出手段が前
記第１水位を検出したことに基づいて前記自動弁
を閉じ、前記水位検出手段が前記第２水位を検出
し、且つ前記計時手段が計時を終了したことに基
づいて前記自動弁を開ける自動弁制御手段とを有
することを特徴とする圧力タンク式給水装置。1. A pump, a pressure tank that is installed in the water supply pipe supplied by the pump and stores water discharged by the pump, an air tank, and an air tank that takes outside air into the air tank. An intake check valve, an air supply pipe communicating between the upper part of the air tank and the inside of the pressure tank, and an air supply pipe provided in the middle of the air supply pipe to supply air from the air tank to the pressure tank. It has a check valve for air replenishment, and a jet pump for discharging the water in the air tank.The driving inflow side of this jet pump is connected to the downstream side of the pump, and the suction side is connected to the downstream side of the pump. The air tank is connected to the lower part of the air tank, and the discharge side is connected to the upstream side of the main check valve provided on the discharge side of the pump via an automatic valve. water level detection means for detecting a first water level in the tank and a second water level higher than the first water level;
a timekeeping means that starts timekeeping based on the water level detection means detecting the first water level, and ends the timekeeping after a predetermined time when the water level in the air tank is expected to be equal to or higher than the second water level; The automatic valve is closed based on the water level detection means detecting the first water level, and the automatic valve is closed based on the water level detection means detecting the second water level and the timekeeping means finishing timing. and an automatic valve control means for opening the pressure tank type water supply device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP891282A JPS57140581A (en) | 1982-01-25 | 1982-01-25 | Water feeder with pressure tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP891282A JPS57140581A (en) | 1982-01-25 | 1982-01-25 | Water feeder with pressure tank |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57140581A JPS57140581A (en) | 1982-08-31 |
| JPH0121353B2 true JPH0121353B2 (en) | 1989-04-20 |
Family
ID=11705867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP891282A Granted JPS57140581A (en) | 1982-01-25 | 1982-01-25 | Water feeder with pressure tank |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57140581A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111452907A (en) * | 2020-03-13 | 2020-07-28 | 上海外高桥造船有限公司 | Pressure water tank device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52142308A (en) * | 1976-05-21 | 1977-11-28 | Sekisui Koji Kk | Airrfeed means for pressure tanks |
| JPS52142307A (en) * | 1976-05-22 | 1977-11-28 | Sekisui Koji Kk | Airrfeed means for pressure tanks |
| JPS566963U (en) * | 1979-06-26 | 1981-01-21 |
-
1982
- 1982-01-25 JP JP891282A patent/JPS57140581A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57140581A (en) | 1982-08-31 |
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