JPH0637590U - Pressure tank type water supply device - Google Patents
Pressure tank type water supply deviceInfo
- Publication number
- JPH0637590U JPH0637590U JP7454792U JP7454792U JPH0637590U JP H0637590 U JPH0637590 U JP H0637590U JP 7454792 U JP7454792 U JP 7454792U JP 7454792 U JP7454792 U JP 7454792U JP H0637590 U JPH0637590 U JP H0637590U
- Authority
- JP
- Japan
- Prior art keywords
- air
- tank
- pump
- pressure
- pressure tank
- 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.)
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
(57)【要約】
【目的】空気補給機構が構造簡単で現地施工を要せず、
各部の相対的位置に関する制約が少なく、小型軽量かつ
低コストで信頼性に優れた圧力タンク式給水装置を提供
する。
【構成】ポンプ１に接続された空気槽３、逆止弁４およ
び圧力タンク５を有する給水装置において、空気槽３に
対し逆流防止手段１１を介して空気圧送手段１２を接続
してなることを特徴とする。
【作用】空気槽の水がポンプ停止中に圧送される空気に
置換され、この空気がポンプ起動時にその吐出水ととも
に圧力タンクに補給される。
(57) [Summary] [Purpose] The air supply mechanism has a simple structure and does not require on-site construction.
(EN) Provided is a pressure tank type water supply device which is small in size, light weight, low in cost, and excellent in reliability, with less restrictions on relative positions of respective parts. In a water supply device having an air tank 3, a check valve 4 and a pressure tank 5 connected to a pump 1, an air pressure feeding means 12 is connected to the air tank 3 via a backflow prevention means 11. Characterize. The water in the air tank is replaced with the air that is pumped while the pump is stopped, and this air is replenished to the pressure tank together with the discharge water when the pump is started.
Description
【０００１】[0001]
本考案は、ポンプの吐出側に接続された圧力タンクを有する圧力タンク式給水 装置に関する。 The present invention relates to a pressure tank type water supply device having a pressure tank connected to the discharge side of a pump.
【０００２】[0002]
圧力タンク式給水装置においては、圧力タンク内に封入された空気の減耗を補 うため通常は空気補給機構を備えている。すなわち、図３に示す第１の従来例に おいては、ポンプ１（以下、本考案の実施例と相対応する部分については図１に おけると同一記号を付して示す）から圧力タンク５に至る送水管２に立上り部ａ を介して空気槽３を設け、その位置が受水槽６の水面より高くなるように配置さ れている。そして、ポンプ１の停止時に空気槽３から落下する水の負圧により吸 気弁ｂを介して外部から吸入された空気が、ポンプ１の起動時に吐出水とともに 圧力タンク５に補給される。 The pressure tank type water supply device is usually equipped with an air replenishment mechanism to compensate for the loss of the air enclosed in the pressure tank. That is, in the first conventional example shown in FIG. 3, the pump 1 (hereinafter, the parts corresponding to those of the embodiment of the present invention are denoted by the same symbols as in FIG. 1) to the pressure tank 5 An air tank 3 is provided in the water supply pipe 2 reaching to the above via a rising portion a 1, and the position is higher than the water surface of the water receiving tank 6. Then, the air sucked from the outside through the suction valve b by the negative pressure of the water falling from the air tank 3 when the pump 1 is stopped is supplied to the pressure tank 5 together with the discharge water when the pump 1 is started.
【０００３】 図４に示す第２の従来例においては、空気槽３が圧力タンク５の底部と中間部 との間に接続されている。ポンプ１の起動時には制御部１０により給水弁ｃが開 かれるとともに排水弁ｄが閉じられ、圧力タンク５から流出する水により空気槽 ３内の空気が圧力タンク５に補給される。制御部１０に設定された所定時間が経 過すると給水弁ｃが閉じられるとともに排水弁ｄが開かれ、空気槽３内の水が排 水弁ｄおよび排水管ｅを介して流出される際の負圧により外気が吸気弁ｂを介し て空気槽３に吸入される。排水および吸気が完了したときポンプ１が停止してい る場合はそのままの状態に維持され、ポンプ１の運転中は上述のような空気補給 動作が繰返して行われる。In the second conventional example shown in FIG. 4, the air tank 3 is connected between the bottom portion and the middle portion of the pressure tank 5. When the pump 1 is started, the water supply valve c is opened and the drain valve d is closed by the control unit 10, and the water flowing out from the pressure tank 5 replenishes the air in the air tank 3 to the pressure tank 5. When a predetermined time set in the control unit 10 has passed, the water supply valve c is closed and the drain valve d is opened so that the water in the air tank 3 flows out through the drain valve d and the drain pipe e. Due to the negative pressure, the outside air is sucked into the air tank 3 via the intake valve b. When the pump 1 is stopped when the drainage and the intake are completed, the state is maintained as it is, and while the pump 1 is operating, the air replenishing operation as described above is repeated.
【０００４】 図５に示す第３の従来例（特公平１−２１３５３号）においては、空気槽３の 下部がジェットポンプｆ、排水弁ｄおよび排水管ｅを介して受水槽６に導かれて いる。制御部１０により排水弁ｄが開かれると圧力タンク５の水がジェットポン プｆを介して受水槽６に還流され、この際ジェットポンプｆの噴流に基づく負圧 により空気槽３の水が流出されるとともに外気が吸気弁ｂを経て吸入される。そ して、排水弁ｄが閉じられると圧力タンク５から圧入される水により空気槽３内 の空気が圧力タンク５に補給される。In the third conventional example (Japanese Patent Publication No. 1-21353) shown in FIG. 5, the lower part of the air tank 3 is guided to the water receiving tank 6 via the jet pump f, the drain valve d and the drain pipe e. There is. When the drain valve d is opened by the control unit 10, the water in the pressure tank 5 is returned to the water receiving tank 6 through the jet pump f, and at this time, the water in the air tank 3 flows out due to the negative pressure based on the jet flow of the jet pump f. At the same time, the outside air is taken in through the intake valve b. Then, when the drain valve d is closed, the air in the air tank 3 is replenished to the pressure tank 5 by the water press-fitted from the pressure tank 5.
【０００５】[0005]
上記第１の従来例においては、空気槽３を受水槽６の最高水位より上に設ける 必要があるため立上り部ａの現地配管に手数を要し、かつ空気槽３の大きさを圧 力タンク５の容量に応じて設定しなければならないので生産性に劣るなどの不具 合がある。 In the above-mentioned first conventional example, since it is necessary to provide the air tank 3 above the maximum water level of the water receiving tank 6, it is necessary to arrange the on-site piping of the rising portion a, and the size of the air tank 3 is set to the pressure tank. Since it must be set according to the capacity of 5, there are some problems such as poor productivity.
【０００６】 また、上記第２および第３の従来例においては、排水管ｅを含む空気補給用配 管系の構成が複雑かつ繊細なため組立状態での移送が困難であり、現地配管が不 可欠なため装備に手数を要するばかりでなく、赤水対策のために余分の手数およ び費用を要するなどの不具合がある。 また、上記各従来例においては、いづれも小形化、軽量化および低コスト化な どに難点がある。 なお、上記各従来例の他に、圧力タンクに空気補給用コンプレッサを直結した ものもあるが、高圧コンプレッサを要するためコスト的に不利を免れ得ない。Further, in the above-mentioned second and third conventional examples, since the structure of the air supply pipe system including the drain pipe e is complicated and delicate, it is difficult to transfer it in the assembled state, and the on-site piping is unsatisfactory. Not only is it indispensable for the equipment because it is indispensable, but there are problems such as extra labor and cost for measures against red water. Further, each of the above-mentioned conventional examples has problems such as miniaturization, weight reduction, and cost reduction. In addition to the above-mentioned conventional examples, there is a compressor in which an air replenishing compressor is directly connected to the pressure tank, but a high pressure compressor is required, which is unavoidable in terms of cost.
【０００７】 本考案は上述のような問題点を解決するためになされたもので、空気補給機構 が構造簡単で現地施工を要せず、各部の相対的位置に関する制約がなく、小型軽 量かつ低コストでありながら信頼性に優れた圧力タンク式給水装置を提供するこ とを目的とする。The present invention has been made to solve the above-mentioned problems. The air supply mechanism has a simple structure, does not require on-site construction, has no restrictions on the relative position of each part, and is compact and lightweight. It is an object of the present invention to provide a pressure tank type water supply device that is low in cost and excellent in reliability.
【０００８】[0008]
本考案は、ポンプの吐出側に直列接続された空気槽、逆止弁および圧力タンク を有する給水装置において、上記空気槽に対し逆流防止手段を介して空気圧送手 段を接続したことを特徴とするものである。 The present invention is characterized in that, in a water supply device having an air tank, a check valve and a pressure tank connected in series on the discharge side of a pump, an air pressure feeding means is connected to the air tank via a backflow prevention means. To do.
【０００９】[0009]
上記の構成において、ポンプ停止中に空気の圧送が開始されると空気槽内の水 がポンプを経て受水槽方向に流動されることにより空気に置換され、ポンプが起 動されると、置換された空気がポンプの吐出水とともに圧力タンクに補給される 。 In the above configuration, when air pumping is started while the pump is stopped, the water in the air tank is replaced with air by flowing through the pump toward the receiving tank, and when the pump is started, it is replaced. The supplied air is supplied to the pressure tank together with the discharge water of the pump.
【００１０】[0010]
以下、本考案につき図１に示す一実施例を参照しながら説明する。 The present invention will be described below with reference to an embodiment shown in FIG.
【００１１】 図１において、ポンプ１の送水管２には空気槽３、逆止弁４および圧力タンク ５がこの順に直列接続されており、吸込側は受水槽６に導かれている。圧力タン ク５には、圧力検出部７、排気弁８および安全弁９などが設けられている。圧力 検出部７の出力信号はポンプ１を発停制御する制御部１０に導かれている。In FIG. 1, an air tank 3, a check valve 4 and a pressure tank 5 are connected in series to a water supply pipe 2 of a pump 1 in this order, and a suction side is led to a water receiving tank 6. The pressure tank 5 is provided with a pressure detector 7, an exhaust valve 8, a safety valve 9, and the like. The output signal of the pressure detection unit 7 is guided to the control unit 10 that controls the start and stop of the pump 1.
【００１２】 上記空気槽３には、逆流防止手段１１を介して空気圧送手段１２が接続されて おり、この空気圧送手段１２は制御部１０を介して発停制御されるように構成さ れている。An air pressure feeding means 12 is connected to the air tank 3 via a backflow prevention means 11, and the air pressure feeding means 12 is configured to be controlled to start / stop via a control unit 10. There is.
【００１３】 上記逆流防止手段１１は通常の逆止弁（点線で示す）でもよく、あるいは図２ に示すように制御部１０を介して開閉制御される開閉弁（点線で示す）などであ ってもよい。要すれば逆流防止手段１１が、空気圧送手段１２との間に介在する 螺旋管１３（図２参照）を備えていてもよい。また、上記空気圧送手段１２は小 容量かつ低圧のコンプレッサ等であってよい。 次に上記実施例の作用を説明する。The check valve 11 may be a normal check valve (shown by a dotted line), or an open / close valve (shown by a dotted line) whose opening and closing is controlled by the control unit 10 as shown in FIG. May be. If necessary, the backflow prevention means 11 may include a spiral tube 13 (see FIG. 2) interposed between the backflow prevention means 11 and the air pressure feeding means 12. Further, the air pressure feeding means 12 may be a small capacity, low pressure compressor or the like. Next, the operation of the above embodiment will be described.
【００１４】 ポンプ１は、圧力タンク５の内圧が所定の下限値以下に低下したとき圧力検出 部７からの信号に応じて制御部１０を介して起動され、所定の上限値以上に上昇 したとき停止される。なお、要すればポンプの停止を吐出流量に関連して制御す るようにしてもよい。When the internal pressure of the pressure tank 5 drops below a predetermined lower limit value, the pump 1 is started via the control unit 10 in response to a signal from the pressure detection unit 7, and rises above a predetermined upper limit value. Be stopped. If necessary, the stop of the pump may be controlled in relation to the discharge flow rate.
【００１５】 逆流防止手段１１が通常の逆止弁の場合には、ポンプ１が停止すると制御部１ ０を介して空気圧送手段１２が運転状態とされ、この状態は制御部１０に予め設 定された所定時間が経過するか、またはポンプ１が起動されるまで維持される。 その間に空気圧送手段１２から空気槽３に空気が流入され、この流入空気により 、その流入量に対応する水がポンプ１を経て受水槽６に還流される。そして、上 記所定時間が経過して空気圧送手段１２が停止されると、ポンプ１が停止状態に ある間は流入空気はそのままに保持されている。また、上記所定時間が経過しな い時でも、ポンプ起動信号が入ると、まず空気圧送手段１２を停止し、ポンプ１ を起動させるようになっている。そしてポンプ１が起動された場合には、流入空 気がポンプ１の吐出水とともに逆止弁４を経て圧力タンク５に補給される。なお 、基本シーケンスとしては空気圧送手段１２の逆流を防ぐため、圧力タンク５に おける過剰空気は、排気弁８を介して自動的に外部に放出される。When the check valve 11 is a normal check valve, when the pump 1 is stopped, the pneumatic pumping means 12 is brought into an operating state via the control section 10, and this state is preset in the control section 10. It is maintained until the predetermined time has elapsed or the pump 1 is started. During that time, air is flown into the air tank 3 from the air pressure feeding means 12, and the inflowing air causes water corresponding to the inflow amount to flow back to the water receiving tank 6 via the pump 1. When the above-mentioned predetermined time elapses and the air pressure feeding means 12 is stopped, the inflowing air is maintained as it is while the pump 1 is in the stopped state. Even when the predetermined time has not elapsed, when the pump start signal is input, the pneumatic pumping means 12 is first stopped and the pump 1 is started. Then, when the pump 1 is started, the inflow air is replenished to the pressure tank 5 through the check valve 4 together with the discharge water of the pump 1. In addition, as a basic sequence, in order to prevent backflow of the air pressure feeding means 12, excess air in the pressure tank 5 is automatically discharged to the outside via the exhaust valve 8.
【００１６】 逆流防止手段１１が上記開閉弁の場合には、空気圧送手段１２が起動されてか ら適宜時間経過後に開閉弁が開かれ、かつ開閉弁が閉じられてから適宜時間経過 後に空気圧送手段１２が停止されるように制御することが望ましく、これにより 空気圧送手段１２の浸水事故が防止される。When the backflow prevention means 11 is the above-mentioned on-off valve, the on-off valve is opened after an appropriate time has elapsed since the pneumatic pressure feed means 12 was activated, and the air-pressure is sent after an appropriate time has elapsed after the on-off valve was closed. It is desirable to control the means 12 to be stopped, which prevents flooding of the pneumatic feeding means 12.
【００１７】 また、逆流防止手段１１が上記螺旋管１３備えている場合は、その内径および 有効長を適宜に設定しておくことにより漏洩水が螺旋管１３内に止められ、かつ 次の送気時に押戻されるので、空気圧送手段１２の浸水事故が防止される。When the backflow preventing means 11 is provided with the spiral tube 13, the leak water is stopped in the spiral tube 13 by setting the inner diameter and the effective length of the spiral tube 13 appropriately, and the next air supply is performed. Since it is pushed back at times, a flooding accident of the air pressure feeding means 12 is prevented.
【００１８】 上記実施例においては、空気槽３に対し逆流防止手段１１を介して空気圧送手 段１２を接続すればよく、上記従来例におけるような立上り部ａや排水管ｅなど も不要であり、受水槽６に対するポンプ１や圧力タンク５などの位置が規制され ることもない。したがって、空気補給機構が大幅に簡素化され、かつ現地配管が 不要であるとともに赤水対策も容易であるから、小形かつ軽量であるとともに低 コストで信頼性に富む給水装置が構成される。In the above embodiment, the air pressure feeding means 12 may be connected to the air tank 3 through the backflow prevention means 11, and the rising part a and the drainage pipe e as in the above conventional example are not necessary. The positions of the pump 1 and the pressure tank 5 with respect to the water receiving tank 6 are not restricted. Therefore, the air supply mechanism is greatly simplified, on-site piping is not required, and red water countermeasures are easy, so a compact and lightweight water supply device with low cost and high reliability is constructed.
【００１９】 また、空気圧送手段１２の作動時間は制御部１０において適宜タイマ等により 可変設定されるので、空気補給量を圧力タンク５の容量に応じて適宜に調整可能 であり、空気槽３の標準化に寄与することができる。Further, since the operating time of the air pressure feeding means 12 is variably set by the timer or the like in the control unit 10, the air supply amount can be appropriately adjusted according to the capacity of the pressure tank 5, and the air tank 3 of the air tank 3 can be adjusted. Can contribute to standardization.
【００２０】 なお、本考案は上記実施例のみに限定されるものではなく、例えば空気圧送手 段１２の起動は、圧力タンク５の空気量に応じてオン・オフ作動する電極などに より制御するようにしてもよく、要するに本考案の要旨とするところの範囲内で 種々の変更ないし応用が可能である。The present invention is not limited to the above-described embodiment, and for example, the activation of the pneumatic feeding means 12 is controlled by an electrode or the like which is turned on / off according to the air amount in the pressure tank 5. However, various modifications and applications are possible within the scope of the gist of the present invention.
【００２１】[0021]
以上説明したように本考案によれば、空気補給機構が構造簡単で現地施工を要 せず、各部の相対的位置に関する制約が少なく、小型軽量かつ低コストでありな がら信頼性に優れた圧力タンク式給水装置を提供することができる。 As described above, according to the present invention, the air supply mechanism has a simple structure, does not require on-site construction, has few restrictions on the relative position of each part, and is compact, lightweight, and low in cost, yet highly reliable. A tank type water supply device can be provided.
【図１】本考案の一実施例を示す系統図。FIG. 1 is a system diagram showing an embodiment of the present invention.
【図２】同実施例における要部の変形例を示す部分系統
図。FIG. 2 is a partial system diagram showing a modified example of the main part of the embodiment.
【図３】第１従来例を示す系統図。FIG. 3 is a system diagram showing a first conventional example.
【図４】第２従来例を示す系統図。FIG. 4 is a system diagram showing a second conventional example.
【図５】第３従来例を示す系統図。FIG. 5 is a system diagram showing a third conventional example.
１…ポンプ，３…空気槽、４…逆止弁，５…圧力タン
ク，８…排気弁、１０…制御部、１１…逆流防止手段、
１２…空気圧送手段。DESCRIPTION OF SYMBOLS 1 ... Pump, 3 ... Air tank, 4 ... Check valve, 5 ... Pressure tank, 8 ... Exhaust valve, 10 ... Control part, 11 ... Backflow prevention means,
12 ... Air pressure feeding means.
Claims (3)
槽、逆止弁および圧力タンクを有する給水装置におい
て、上記空気槽に対し逆流防止手段を介して空気圧送手
段を接続してなることを特徴とする圧力タンク式給水装
置。1. A water supply device having an air tank, a check valve, and a pressure tank connected in series on the discharge side of a pump, wherein an air pressure feeding means is connected to the air tank via a backflow prevention means. Characteristic pressure tank type water supply device.
停制御する制御部を具備してなる請求項１の圧力タンク
式給水装置。2. A pressure tank type water supply device according to claim 1, further comprising a control unit for controlling the start and stop of said air pressure feeding means in response to a predetermined signal.
閉制御される開閉弁を具備してなる請求項１または請求
項２の圧力タンク式給水装置。3. The pressure tank type water supply device according to claim 1 or 2, wherein the backflow prevention means comprises an opening / closing valve which is controlled to open / close according to a predetermined signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7454792U JPH0637590U (en) | 1992-10-26 | 1992-10-26 | Pressure tank type water supply device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7454792U JPH0637590U (en) | 1992-10-26 | 1992-10-26 | Pressure tank type water supply device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0637590U true JPH0637590U (en) | 1994-05-20 |
Family
ID=13550393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7454792U Pending JPH0637590U (en) | 1992-10-26 | 1992-10-26 | Pressure tank type water supply device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0637590U (en) |
-
1992
- 1992-10-26 JP JP7454792U patent/JPH0637590U/en active Pending
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