JPS5917277B2 - Automatic electric pump device - Google Patents
Automatic electric pump deviceInfo
- Publication number
- JPS5917277B2 JPS5917277B2 JP13439977A JP13439977A JPS5917277B2 JP S5917277 B2 JPS5917277 B2 JP S5917277B2 JP 13439977 A JP13439977 A JP 13439977A JP 13439977 A JP13439977 A JP 13439977A JP S5917277 B2 JPS5917277 B2 JP S5917277B2
- Authority
- JP
- Japan
- Prior art keywords
- diffuser
- bypass passage
- pressure
- valve
- pump device
- 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
Landscapes
- Control Of Non-Positive-Displacement Pumps (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
【発明の詳細な説明】
この発明は電動うず巻ポンプとジェットポンプとを組合
せて構成される自動式電動ポンプ装置の改良に関するも
のである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in an automatic electric pump device constructed by combining an electric centrifugal pump and a jet pump.
近年の自動式電動ポンプ装置（以下ポンプ装置と記す）
においては、吐出口からの水の吐出量が規定量以上の場
合には圧力スイッチをうず巻ポンプ部の吐出圧から完全
に絶縁し、圧力スイッチをオフ状態に維持してうず巻ポ
ンプ部を連続運転させ、上記規定量を下廻った場合には
圧力スイッチを吐出圧に直接応動させて開閉動作させ、
うず巻ポンプ部を運転又は停止させる構成のものと、上
記規定量以上の場合には圧力スイッチをオン状態に維持
するために、圧力スイッチ接続部近傍の吐出圧を圧力ス
イッチのオフ圧以下に減圧させ、上記規定量を下廻った
場合にはその減圧効果を失い、圧力スイッチを吐出圧に
直接応動させて開閉動作させる構成のもの等が一般に知
られている。Recent automatic electric pump devices (hereinafter referred to as pump devices)
When the amount of water discharged from the discharge port exceeds the specified amount, the pressure switch is completely insulated from the discharge pressure of the centrifugal pump section, and the pressure switch is kept in the OFF state to continuously operate the centrifugal pump section. When the pressure falls below the specified amount, the pressure switch is opened and closed in direct response to the discharge pressure.
It is configured to operate or stop the centrifugal pump section, and in order to maintain the pressure switch in the on state if the above specified amount is exceeded, the discharge pressure near the pressure switch connection part is reduced to below the pressure switch off pressure. There is generally known a configuration in which the pressure switch loses its pressure reducing effect when the pressure falls below the specified amount, and the pressure switch is opened and closed in direct response to the discharge pressure.
これらは、何れもうず巻ポンプ部の吐出量を検出するた
めに、うず巻ポンプの吐出側に弁装置が設けられており
、その弁装置は吐出量が少量の場合に生じる圧力スイッ
チの開閉頻度の増大を防止するために、吐出量が少ない
場合においてもポンプ装置が連続運転するよう上述のよ
うな切替動作をする〔このため、弁装置は例えば１〜２
１／分程度の少量の吐出量になったことを感知できる程
度の高精度に構成されることになるが、上述のように圧
力スイッチを吐出圧から絶縁させる構成のものや、圧力
スイッチ接続部近傍の吐出圧を減圧させる構成のもので
は、一般に特殊な弁装置を用いなければならないので、
おのずからポンプ装置が高価となる欠点を有しているば
かりでなく、ポンプ装置の外観寸法に大きな影響を及ぼ
すうず巻ポンプ部の吐出側に弁装置が設けられるので、
ポンプ装置が大形化する欠点を有していた。All of these devices are equipped with a valve device on the discharge side of the centrifugal pump in order to detect the discharge amount of the centrifugal pump section, and the valve device is designed to control the frequency of opening and closing of the pressure switch that occurs when the discharge amount is small. In order to prevent an increase in the number of pumps, the switching operation as described above is performed so that the pump device can operate continuously even when the discharge amount is small.
It will be configured with high precision to be able to detect when the discharge amount is as small as 1/min, but as mentioned above, the pressure switch may be configured to be insulated from the discharge pressure, or the pressure switch connection part may be Those with a configuration that reduces the nearby discharge pressure generally require the use of a special valve device.
Not only does the pump device naturally have the drawback of being expensive, but the valve device is provided on the discharge side of the centrifugal pump section, which greatly affects the external dimensions of the pump device.
This has the disadvantage that the pump device becomes large in size.
この発明は以上のような従来の実情に鑑みてなされたも
ので、安価で且つ小形コンパクトとなる自動式電動ポン
プ装置を提供するものである。The present invention has been made in view of the above-mentioned conventional circumstances, and it is an object of the present invention to provide an automatic electric pump device that is inexpensive and compact.
以下、この発明の一実施例を第１図ないし第２図に従っ
て説明する。An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.
なお、第１図はこの実施例の構成を示す断面図であり、
第２図はこの実施例のポンプ特性を示す特性図である。Note that FIG. 1 is a sectional view showing the configuration of this embodiment.
FIG. 2 is a characteristic diagram showing the pump characteristics of this embodiment.
図において、１は周知の電動うず巻ポンプであり、吸込
室１１と吐出口１２及び循環口１３とを有している。In the figure, 1 is a well-known electric centrifugal pump, which has a suction chamber 11, a discharge port 12, and a circulation port 13.
２は上記電動うず巻ポンプ（以下うず巻ポンプと記す）
１に結合されたジェット本体であり、水中に連通される
吸込口２１、上記吸込室１１に向って開口され上記吸込
室１１と連通した連通口２２、この連通口２２と上記吸
込口２１との間で内向きの鍔状をなす弁座２３、及び上
記循環口１３に連通されると共に上記吸込口２１の中央
で開口された圧力水路２４が構成されている。2 is the electric centrifugal pump mentioned above (hereinafter referred to as centrifugal pump)
1, a suction port 21 that communicates with the water, a communication port 22 that opens toward the suction chamber 11 and communicates with the suction chamber 11, and a connection between the communication port 22 and the suction port 21. A valve seat 23 having an inwardly facing flange-like shape is formed between the valve seat 23 and a pressure water passage 24 which communicates with the circulation port 13 and opens at the center of the suction port 21.
更に上記連通口２２と上記弁座２３との間には摺動部２
５と、後述するストッパ６の螺合部２６とが形成されて
いる。Furthermore, a sliding portion 2 is provided between the communication port 22 and the valve seat 23.
5 and a threaded portion 26 of a stopper 6, which will be described later.
３は上記圧力水路２４の開口部２７に螺着されたノズル
、４はこのノズル３と同心状で上記連通口２２内に配設
されると共に吐出側が上記吸込室１１内に位置されたデ
ィフューザであり、上記吸込室１１と上記吸込口２１と
の圧力差により上記摺動部２５に沿って移動するように
構成されている。3 is a nozzle screwed onto the opening 27 of the pressure waterway 24; 4 is a diffuser that is concentric with the nozzle 3 and is disposed within the communication port 22, with its discharge side located within the suction chamber 11; It is configured to move along the sliding portion 25 due to the pressure difference between the suction chamber 11 and the suction port 21 .
４１は上記摺動部２５と所定間隙を有して上記ディフュ
ーザ４の吸込側外周部に形成された外向きの鍔部であり
、上記うず巻ポンプ１の停止時には一端が上記弁座２３
の座面から離脱している。Reference numeral 41 denotes an outward flange formed on the outer periphery of the suction side of the diffuser 4 with a predetermined gap from the sliding portion 25, and one end of which is connected to the valve seat 23 when the centrifugal pump 1 is stopped.
It has come off the seat.
４２は上記鍔部４１に連続して形成され、上記吸込室１
１に向って延在した複数個の案内部であり、上記ディフ
ューザ４の移動時に上記ディフューザ４を上記摺動部２
５に沿って移動するように案内するためのものである。42 is formed continuously to the flange 41, and is connected to the suction chamber 1.
1, the diffuser 4 is guided by the sliding portion 2 when the diffuser 4 is moved.
This is for guiding the user to move along 5.
４３は上記ディフューザ４の吸込側内周部に形成された
縮小部、４４はこの縮少部４３に連続したスロート部、
４５はこのスロート部４４に連続し上記うず巻ポンプ１
側に向って徐々に拡大された拡大部である。Reference numeral 43 denotes a reduced portion formed on the inner periphery of the suction side of the diffuser 4; 44 refers to a throat portion continuous to the reduced portion 43;
45 is continuous with this throat part 44 and is connected to the above-mentioned centrifugal pump 1.
This is an enlarged portion that gradually expands toward the sides.
なお、上記スロート部４４と上記拡大部４５は最適な流
路断面積を有するように形成されている。Note that the throat portion 44 and the enlarged portion 45 are formed to have an optimum flow path cross-sectional area.
また、上記縮少部４３の外周と上記弁座２３の内周との
間は適宜の隙間２８が構成され、また更に、上記鍔部４
１の外周と上記摺動部２５の内周との間は適宜の隙間２
９が構成されている。Further, an appropriate gap 28 is formed between the outer periphery of the reduced portion 43 and the inner periphery of the valve seat 23, and furthermore, the flange portion 4
There is an appropriate gap 2 between the outer periphery of 1 and the inner periphery of the sliding part 25.
9 are configured.
５は上記ディフューザ４の外周部に遊嵌され、複数個の
上記案内部４２と上記弁座２３との間で所定の弾性力を
有して保持されたコイルばねであり、上記うず巻ポンプ
１の吐出口１２からの吐出量が規定量（１〜２１／分程
度）を下廻った際における上記吸込室１１と上記吸込口
２１との圧力差により、上記ディフューザ４が上記吸込
口２１に向って容易に移動できるように構成されている
。Reference numeral 5 denotes a coil spring that is loosely fitted around the outer circumferential portion of the diffuser 4 and is held with a predetermined elastic force between the plurality of guide parts 42 and the valve seat 23. Due to the pressure difference between the suction chamber 11 and the suction port 21 when the discharge amount from the discharge port 12 falls below a specified amount (approximately 1 to 21/min), the diffuser 4 moves toward the suction port 21. Constructed for easy movement.
６は上記ジェット本体２の螺合部２６に螺着され、上記
ディフューザ４の軸方向移動を所定範囲内に規制するス
トッパである。Reference numeral 6 denotes a stopper that is screwed onto the threaded portion 26 of the jet main body 2 and restricts the axial movement of the diffuser 4 within a predetermined range.
なお、上記ストッパ６の内周と上記ディフューザ４の外
周との間には適宜の隙間６１が構成されている０７は上
記隙間２８ 、２９ 。Note that an appropriate gap 61 is formed between the inner periphery of the stopper 6 and the outer periphery of the diffuser 4. 07 indicates the gaps 28 and 29.
６１、及び上記ディフユーザ４外周と上記摺動部２５内
周との隙間で構成されたバイパス通路であり、上記吐出
口１２からの吐出量が上記規定量以上の場合と、上記う
ず巻ポンプ１が停止している場合とにおいて上記吸込口
２１と上記吸込室１１とを連通ずるものである。61, and a bypass passage formed by a gap between the outer periphery of the differential user 4 and the inner periphery of the sliding part 25, and when the discharge amount from the discharge port 12 is equal to or more than the specified amount, The suction port 21 and the suction chamber 11 are communicated with each other when the suction port 21 is stopped.
８は上記うず巻ポンプ１と上記ジェット本体２との間を
水密に構成したガスケット、９は上記吐出口１２に設け
られ吐出圧を検出して上記うず巻ポンプ１を運転又は停
止させる圧力スイッチであり、オフ圧力は第２図のよう
にうず巻ポンプ１として運転される際の最大圧力よりも
高い圧力に設定されている。Reference numeral 8 denotes a gasket that provides a watertight connection between the centrifugal pump 1 and the jet main body 2, and 9 a pressure switch provided at the discharge port 12 to detect the discharge pressure and operate or stop the centrifugal pump 1. As shown in FIG. 2, the off pressure is set to a higher pressure than the maximum pressure when the centrifugal pump 1 is operated.
なお、第２図の横軸は吐出量、すなわち流量（Ｑｌで、
縦軸は吐出圧、すなわち揚程（Ｈである。The horizontal axis in Fig. 2 is the discharge amount, that is, the flow rate (Ql,
The vertical axis is the discharge pressure, that is, the head (H).
上記のように構成されたものにおいては、うず巻ポンプ
１が停止している状態で吐出口１２から水を吐出させる
と、徐々にうず巻ポンプ１内の圧力が低下し、ついには
圧力スイッチ９が閉成され、うず巻ポンプ１が起動する
。In the device configured as described above, when water is discharged from the discharge port 12 while the centrifugal pump 1 is stopped, the pressure inside the centrifugal pump 1 gradually decreases, and finally the pressure switch 9 is closed, and the centrifugal pump 1 is started.
ここで、ディフューザ４の案内部４２はコイルばね５に
より連通口２２に向って付勢されているので、鍔部４１
と弁座２３とは離脱しており、バイパス通路７は吸込室
１１と吸込口２１とを連通している。Here, since the guide portion 42 of the diffuser 4 is urged toward the communication port 22 by the coil spring 5, the flange portion 41
The valve seat 23 is separated from the valve seat 23, and the bypass passage 7 communicates the suction chamber 11 with the suction port 21.
従って、水の吐出量が多い場合には、ディフューザ４の
スロート部４４にキャビテーションが発生するような多
量の水がディフューザ４内を通過する場合に効果的な周
知のバイパス通路付ジェットポンプの状態で運転され、
吸込口２１の水は吸込室１１の負圧に誘われてディフュ
ーザ４内とバイパス通路７とを通過して吸込室１１へと
導入される。Therefore, when the amount of water discharged is large, the state of the well-known jet pump with a bypass passage is effective when a large amount of water passes through the diffuser 4 that causes cavitation in the throat portion 44 of the diffuser 4. driven,
Water in the suction port 21 is induced by the negative pressure in the suction chamber 11 and is introduced into the suction chamber 11 through the diffuser 4 and the bypass passage 7.
次に、水の吐出量が少ない場合には、スロート部４４に
キャビテーションが発生しないので、拡大部４５による
昇圧作用は順調におこなわれ、吸込室１１の圧力が吸込
口２１の圧力よりも犬となり、吸込室１１の水の一部が
バイパス通路７を介して吸込口２１へと逆流を開始し、
ディフューザ４は吸込室１１と吸込口２１との圧力差で
吸込口２１へ向って移動しようとする。Next, when the amount of water discharged is small, cavitation does not occur in the throat portion 44, so the pressure increasing effect by the enlarged portion 45 is performed smoothly, and the pressure in the suction chamber 11 becomes higher than the pressure in the suction port 21. , a part of the water in the suction chamber 11 starts flowing back to the suction port 21 via the bypass passage 7,
The diffuser 4 tends to move toward the suction port 21 due to the pressure difference between the suction chamber 11 and the suction port 21 .
ところが、ディフューザ４はコイルばね５で吸込室１１
へ向って付勢され、その弾性力は上記圧力差よりも大き
いので、ディフューザ４は移動が阻止されることになる
。However, the diffuser 4 is connected to the suction chamber 11 by the coil spring 5.
Since the elastic force is greater than the pressure difference, the diffuser 4 is prevented from moving.
このため、バイパス通路７は吸込室１１と吸込口２１と
を連通した状態で維持され、上記圧力差で吸込室１１の
水の一部が逆流する状態のままとなり、ジェット本体２
内ではポンプ作用がおこなわれないので、ポンプ装置は
うず巻ポンプ１単独で運転される。For this reason, the bypass passage 7 is maintained in a state in which the suction chamber 11 and the suction port 21 are in communication with each other, and a portion of the water in the suction chamber 11 continues to flow backward due to the pressure difference, and the jet main body 2
Since no pumping action takes place inside the pump, the pump device is operated by the centrifugal pump 1 alone.
ところで、圧力スイッチ９のオフ圧はうず巻ポンプ１の
最大圧力よりも高い圧力に設定されているので、上記の
ようにポンプ装置がうず巻ポンプ１単独で運転されてい
る場合には、圧力スイッチ９はオン状態で連続運転され
ることになる〇一方、水の吐出量がきわめて少量（例え
ば１〜２！！／分程度）もしくは吐出量が零の場合にな
ると、ディフューザ４の昇圧作用はきわめて向上し、吸
込室１１の圧力が吸込口２１の圧力よりも過大となり、
その圧力差により吸込室１１の水がバイパス通路７を介
して大量に逆流すると同時に、ディフューザ４がコイル
ばね５の弾性力に抗して吸込口２１側に向って移動し、
ついには弁座２３の座面に鍔部４１が当接する。By the way, the off pressure of the pressure switch 9 is set to a higher pressure than the maximum pressure of the centrifugal pump 1, so when the pump device is operated by the centrifugal pump 1 alone as described above, the pressure switch 9 9 will be operated continuously in the on state. On the other hand, if the discharge amount of water is extremely small (for example, about 1 to 2!!/min) or the discharge amount is zero, the pressure increasing effect of the diffuser 4 will be The pressure in the suction chamber 11 becomes greater than the pressure in the suction port 21,
Due to the pressure difference, a large amount of water in the suction chamber 11 flows back through the bypass passage 7, and at the same time, the diffuser 4 moves toward the suction port 21 against the elastic force of the coil spring 5.
Finally, the flange 41 comes into contact with the seat surface of the valve seat 23.
このため、水の逆流が阻止されることは勿論であるが、
吐出口１２の圧力がうず巻ポンプ１とディフューザ４と
の協同作用による圧力上昇できわめて高圧となる。For this reason, it goes without saying that backflow of water is prevented, but
The pressure at the discharge port 12 becomes extremely high due to the pressure increase due to the cooperative action of the centrifugal pump 1 and the diffuser 4.
従って、吐出口１２の圧力は圧力スイッチ９のオフ圧に
達して圧力スイッチ９がオフとなり、うず巻ポンプ１が
停止する。Therefore, the pressure at the discharge port 12 reaches the off pressure of the pressure switch 9, the pressure switch 9 is turned off, and the centrifugal pump 1 is stopped.
なお、停止した場合には、おのずから吸込室１１と吸込
口２１との圧力差が消滅するので、ディフューザ４はコ
イルばね５の弾性力で再び吸込室１１に向って移動し、
バイパス通路１が連通状態に復帰することは言うまでも
ない。Note that when it is stopped, the pressure difference between the suction chamber 11 and the suction port 21 naturally disappears, so the diffuser 4 moves toward the suction chamber 11 again by the elastic force of the coil spring 5.
Needless to say, the bypass passage 1 returns to the communicating state.
ところで、上記構成のポンプ装置におけるポンプ特性曲
線は第２図中実線で示す曲線となる。Incidentally, the pump characteristic curve in the pump device having the above configuration is the curve shown by the solid line in FIG.
すなわち、バイパス通路７が連通している状態ではジェ
ット本体１内のポンプ作用は生じていないので、うず巻
ポンプ１単独で運転される。That is, when the bypass passage 7 is in communication, there is no pumping action within the jet main body 1, so the centrifugal pump 1 is operated independently.
従って、吐出量、即ち流量がＱ１〜Ｑ２の範囲では、う
ず巻ポンプ１単独の特性Ｃ−Ｄとなる。Therefore, when the discharge amount, that is, the flow rate is in the range of Q1 to Q2, the characteristic of the centrifugal pump 1 alone is CD.
このため、吐出口１２の圧力は圧力スイッチ９のオフ圧
に到達しないので、うず巻ポンプ１は連続運転すること
になる。Therefore, the pressure at the discharge port 12 does not reach the off pressure of the pressure switch 9, so the centrifugal pump 1 continues to operate.
ところが、Ｑｌを下廻ると吸込室１１の圧力が吸込口２
１の圧力よりもきわめて高圧となるので、バイパス通路
７が封鎖され、ポンプ装置はうず巻ポンプ１とディフュ
ーザ４との協同作用でポンプ特性が急激に向上してＣ＋
Ｂとなり、その際の吐出圧は圧力スイッチ９のオフ圧を
越えるので、うず巻ポンプ１が停止することになる。However, when the pressure in the suction chamber 11 drops below Ql, the pressure in the suction port 2
1, the bypass passage 7 is closed, and the pumping characteristics of the pump device are rapidly improved by the cooperation of the centrifugal pump 1 and the diffuser 4, resulting in a C+
B, and the discharge pressure at that time exceeds the off pressure of the pressure switch 9, so the centrifugal pump 1 stops.
この場合、水は吐出口１２から吐出されているので、そ
のうち吐出圧が低下して圧力スイッチ９のオン圧力以下
となり、再び圧力スイッチ９が閉成され、うず巻ポンプ
１が運転される。In this case, since water is being discharged from the discharge port 12, the discharge pressure eventually decreases to below the ON pressure of the pressure switch 9, the pressure switch 9 is closed again, and the centrifugal pump 1 is operated.
このように、Ｑｏ＝Ｑｔの範囲では圧力スイッチ９が開
閉動作を繰り返すことになるが、上記構成のポンプ装置
では、ディフューザ４がコイルばね５で吸込側に向って
付勢されているので、その弾性力を適宜に選定すること
により、Ｑｌの流量を従来と同様の１〜２１１７分程度
の値程度易に設定することができ、このようなきわめて
少量の吐出量の場合でもうず巻ポンプ１が連続運転され
ることになる。In this way, the pressure switch 9 repeats the opening and closing operations in the range of Qo=Qt, but in the pump device with the above configuration, the diffuser 4 is biased toward the suction side by the coil spring 5, so that By appropriately selecting the elastic force, the flow rate of Ql can be easily set to a value of about 1 to 2117 minutes, which is the same as before. will be operated continuously.
なお、上記構成のポンプ装置は、ディフューザ４の軸方
向移動寸法を規制するストッパ６が螺合部２６に螺着さ
れているので、ストッパ６を回動させることにディフュ
ーザ４がストッパ６と共に前進あるいは後退してコイル
ばね５の弾性力を適宜に調整でき、据付現場に旧いても
流量Ｑ１の値を任意に設定できる付随的効果を有してい
る。In the pump device configured as described above, the stopper 6 that regulates the axial movement dimension of the diffuser 4 is screwed onto the threaded portion 26, so that rotating the stopper 6 causes the diffuser 4 to move forward with the stopper 6 or The elastic force of the coil spring 5 can be adjusted appropriately by retreating, and the value of the flow rate Q1 can be arbitrarily set even if the coil spring 5 is installed at the installation site.
この発明は以上のように、バイパス通路内に通路方向に
移動自在に支承され、上記ジェット本体の吸込側と吐出
側との圧力差に応じて移動し得るディフューザ、このデ
ィフューザに一体的に設けられた弁部、この弁部に対向
して上記バイパス通路に形成され上記弁部との離接によ
り上記バイパス通路を開閉し得る弁座、及びこの弁座か
ら上記弁部が離れる方向に上記ディフューザを付勢する
付勢手段を設けたので、従来のように特殊な弁装置を用
いたものに比しポンプ装置がきわめて安価となる効果が
あるばかりでなく、外観寸法に殆ど影響しないジェット
本体又はディフューザに設けられたバイパス通路に弁装
置が配置されているので、うず巻ポンプの吐出側に弁装
置を設けた従来のものに比しポンプ装置がきわめて小形
コンパクトとなる効果がある。As described above, the present invention provides a diffuser that is supported in a bypass passage so as to be movable in the passage direction and that can be moved in accordance with the pressure difference between the suction side and the discharge side of the jet main body, and a diffuser provided integrally with the diffuser. a valve part, a valve seat formed in the bypass passage opposite to the valve part and capable of opening and closing the bypass passage by coming into contact with and separating from the valve part, and the diffuser being moved in a direction in which the valve part moves away from the valve seat. Since a biasing means is provided, the pump device is not only much cheaper than the conventional pump device that uses a special valve device, but also has the effect of reducing the jet body or diffuser with almost no effect on the external dimensions. Since the valve device is disposed in the bypass passage provided in the pump, the pump device can be made much smaller and more compact than a conventional pump device in which a valve device is provided on the discharge side of the centrifugal pump.
また更に、ディフューザそのものが変位し、弁装置とし
て作用するものであるため、ディフューザとバイパス通
路との相互寸法のみを考慮すれば良く、例えばディフュ
ーザの外周にパツキンを配置するものに比しても、構造
が簡単化される効果がある。Furthermore, since the diffuser itself is displaced and acts as a valve device, it is only necessary to consider the mutual dimensions of the diffuser and the bypass passage. This has the effect of simplifying the structure.
なお、ディフューザの移動量を規制する螺合部材を設け
たものでは、付勢力を適宜に調整でき、流量Ｑ１の値を
任意に設定できる効果かあ・る。In addition, when a screw member is provided to restrict the amount of movement of the diffuser, the biasing force can be adjusted as appropriate, and the value of the flow rate Q1 can be set arbitrarily.
第１図はこの発明の一実施例を示す断面図、第２図はこ
の発明のポンプ特性曲線を示す特性図である０
図において、１はうず巻ポンプ、２はジェット本体、２
３は弁座、４はディフューザ、４１は鍔部、５はコイル
ばね、６はストッパ、７はバイパス通路である。
なお、各図中同一符号は同−又は相当部分を示す。Fig. 1 is a sectional view showing an embodiment of the present invention, and Fig. 2 is a characteristic diagram showing the pump characteristic curve of the invention.
3 is a valve seat, 4 is a diffuser, 41 is a flange, 5 is a coil spring, 6 is a stopper, and 7 is a bypass passage. Note that the same reference numerals in each figure indicate the same or corresponding parts.
Claims (1)
、このジェット本体の吸込側と吐出側とを連通し得るバ
イパス通路、このバイパス通路内に通路方向移動自在に
支承され、上記ジェット本体の吸込側と吐出側との圧力
差に応じて移動し得るディフューザ、このディフューザ
に一体的に設けられた弁部、この弁部に対向して上記バ
イパス通路に形成され上記弁部との離接により上記バイ
パス通路を開閉し得る弁座、及びこの弁座から上記弁部
が離れる方向に上記ディフューザを付勢する付勢力手段
を備えた自動式電動ポンプ装置。 ２ 上記付勢手段はばねで構成されていることを特徴と
する特許請求の範囲第１項記載の自動式電動ポンプ装置
。 ３ 電動うず巻ポンプの吸込側に連通したジェット本体
、このジェット本体の吸込側と吐出側とを連通し得るバ
イパス通路、このバイパス通路内に通路方向に移動自在
に支承され、上記ジェット本体の吸込側と吐出側との圧
力差に応じて移動し得るディフューザ、このディフュー
ザに一体的に設けられた弁部、この弁部に対向して上記
バイパス通路に形成され上記弁部との離接により上記バ
イパス通路を開閉し得る弁座、この弁座から上記弁部が
離れる方向に上記ディフューザを付勢する付勢力手段、
及び上記バイパス通路に螺合され、その螺合量に応じて
上記ジェット本体の吐出側への上記ディフューザの移動
量を規制する螺合部材を備えた自動式電動ポンプ装置。 ４ 上記付勢手段はばねで構成されていることを特徴と
する特許請求の範囲第３項記載の自動式電動ポンプ装置
。[Scope of Claims] 1. A jet body communicating with the suction side of the electric centrifugal pump, a bypass passage capable of communicating the suction side and the discharge side of the jet body, supported within the bypass passage so as to be movable in the direction of the passage, A diffuser that can move according to the pressure difference between the suction side and the discharge side of the jet main body, a valve part integrally provided with the diffuser, and a valve part formed in the bypass passage opposite to the valve part. An automatic electric pump device comprising: a valve seat that can open and close the bypass passage by moving toward and away from the valve seat; and urging force means for urging the diffuser in a direction in which the valve portion moves away from the valve seat. 2. The automatic electric pump device according to claim 1, wherein the biasing means is comprised of a spring. 3 A jet body communicating with the suction side of the electric centrifugal pump, a bypass passage capable of communicating the suction side and the discharge side of the jet body, supported movably in the direction of the passage in the bypass passage, and supporting the suction side of the jet body. A diffuser that can move according to the pressure difference between the side and the discharge side, a valve part integrally provided with the diffuser, and a valve part formed in the bypass passage opposite to the valve part, and by coming into contact with and separating from the valve part, the above-mentioned a valve seat capable of opening and closing a bypass passage; urging force means for urging the diffuser in a direction in which the valve portion moves away from the valve seat;
and an automatic electric pump device, comprising a threaded member that is threaded into the bypass passage and regulates the amount of movement of the diffuser toward the discharge side of the jet main body according to the amount of threaded engagement. 4. The automatic electric pump device according to claim 3, wherein the biasing means is comprised of a spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13439977A JPS5917277B2 (en) | 1977-11-08 | 1977-11-08 | Automatic electric pump device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13439977A JPS5917277B2 (en) | 1977-11-08 | 1977-11-08 | Automatic electric pump device |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6467183A Division JPS5941693A (en) | 1983-04-11 | 1983-04-11 | Automatic electrical pump apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5467206A JPS5467206A (en) | 1979-05-30 |
| JPS5917277B2 true JPS5917277B2 (en) | 1984-04-20 |
Family
ID=15127480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13439977A Expired JPS5917277B2 (en) | 1977-11-08 | 1977-11-08 | Automatic electric pump device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5917277B2 (en) |
-
1977
- 1977-11-08 JP JP13439977A patent/JPS5917277B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5467206A (en) | 1979-05-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10610874B2 (en) | Handheld shower head with adjustable flow rate | |
| US8740177B2 (en) | Eccentric diaphragm valve | |
| US10428505B2 (en) | Flushing toilet cover | |
| US5080324A (en) | Structure of faucet for automatic water supply and stoppage | |
| US12037779B2 (en) | Flush water tank apparatus and flush toilet apparatus provided with the same | |
| CN110076016B (en) | Waterway switching structure of shower head | |
| US5813652A (en) | Apparatus for suppressing noise generated by a flow of water through a water valve | |
| CN210397796U (en) | Switching valve | |
| US2448429A (en) | Pressure relief valve | |
| JPS5917277B2 (en) | Automatic electric pump device | |
| JPS6356436B2 (en) | ||
| CN209943530U (en) | Drain valve mechanism and toilet bowl | |
| EP3845993A1 (en) | Pressure reducing valve and pull-out faucet | |
| CN108458135B (en) | Pull-out faucet waterway switching control mechanism | |
| WO2019205989A1 (en) | Solenoid valve | |
| JPH0116356B2 (en) | ||
| CN112081974B (en) | Water inlet device | |
| WO2024174197A1 (en) | Water intake valve anti-leakage and water-stopping apparatus | |
| EP0257690A2 (en) | Piston structure for a pressure reducing valve | |
| CN110541961B (en) | Built-in liquid level controller and liquid level control system thereof | |
| CN213640723U (en) | Intelligent toilet lid | |
| JPH03553Y2 (en) | ||
| JPS6246714B2 (en) | ||
| US5961292A (en) | Ripple-effect removing valve for use with a pressure detecting device in a control assembly of a pump | |
| CN112503212A (en) | Quick-closing valve starting device with quick opening structure |