JPS5941693A - Automatic electrical pump apparatus - Google Patents
Automatic electrical pump apparatusInfo
- Publication number
- JPS5941693A JPS5941693A JP6467183A JP6467183A JPS5941693A JP S5941693 A JPS5941693 A JP S5941693A JP 6467183 A JP6467183 A JP 6467183A JP 6467183 A JP6467183 A JP 6467183A JP S5941693 A JPS5941693 A JP S5941693A
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- diffuser
- bypass passage
- discharge
- centrifugal 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/02—Stopping of pumps, or operating valves, on occurrence of unwanted conditions
- F04D15/0209—Stopping of pumps, or operating valves, on occurrence of unwanted conditions responsive to a condition of the working fluid
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
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景以上の場
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」二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。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Ｉｉ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ｗ動作をする。Recent automatic electric pump devices (hereinafter referred to as pump devices)
When the amount of water discharged from the discharge port exceeds the specified value, 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 turn off the centrifugal pump section. Continuous operation, and when the pressure falls below the specified amount, the pressure switch is opened and closed in direct response to the discharge pressure, and the centrifugal pump section is operated or stopped;
In order to maintain the pressure switch in the on state when 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 are generally known configurations in which the pressure switch loses the pressure reducing effect and opens and closes in direct response to the discharge pressure. In all of these, a valve device is provided on the discharge side of the centrifugal pump in order to detect the discharge amount of the centrifugal pump section, and the valve device Ii opens and closes the pressure switch that occurs when the discharge amount is small. In order to prevent the frequency from increasing, the above-mentioned switching operation is performed so that the pump device continues to operate even when the discharge amount is small.
このため、弁装置は例えば１〜２１／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、」二連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
装は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１が大形
化する欠点を有していた。For this reason, the valve device has to be constructed with high precision to the extent that it can sense when the discharge rate has reached a small amount, for example, 1 to 21/min. Those with an insulating configuration or those with a configuration that reduces the discharge pressure near the pressure switch connection generally require the use of a special valve system, which naturally has the disadvantage of making the pump equipment expensive. Instead, a valve device is provided on the discharge side of the centrifugal pump section, which has a large effect on the external dimensions of the pump device, so the pump device 1 has the disadvantage of becoming large.
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。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。図において、（１）は周知の′Ｆｉｌ動う
ず巻ポンプであり、吸込室（１１）と吐出口＠及び循環
口０３とを有し水平に配置δされている。（２）は上記
な動うず巻ポンプ（以下うず巻ポンフト記す）（１）に
垂直方向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１２］）、上記吸込室０υに向って開口さ
れ上記吸込室０１）と連通した連通口（イ）、この連通
口（イ）と上記吸込口ｃｏとの間で内向きの鍔状をなす
弁座（ハ）、及び上記循環口ｏ３に連通されると共に上
記吸込口０！】）の中央で開口された圧力水路■が構成
されている。更に北記連通口（イ）と」１記弁座（ハ）
との間には摺動部に）と、後述するストッパ（６）の螺
合部（ホ）とが形成されている。（３）は」二記圧力水
路（財）の開口部（イ）に螺着され下方を吐出口とした
ノズル、（４）はこのノズル（３）と同心状で上記連通
口（ホ）内に配設されると共に吐出側が上記吸込室θυ
内に位置され垂直配置されたディフューザであり、」二
記吸込室Ｑυと上記吸込口ａｌ）との圧力差憾より上記
摺動部（ホ）に沿って移動するように構成されている。An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. Note that FIG. 1 is a sectional view showing the configuration of this embodiment, and FIG. 2 is a characteristic diagram showing the pump characteristics of this embodiment. In the figure, (1) is a well-known 'Fil moving centrifugal pump, which has a suction chamber (11), a discharge port @, and a circulation port 03, and is arranged horizontally δ. (2) is a jet body that is vertically connected to the above-mentioned movable centrifugal pump (hereinafter referred to as the centrifugal pump) (1), and has a suction port 12 which is communicated with the water, and is directed toward the above-mentioned suction chamber 0υ. A communication port (A) opened and communicating with the suction chamber 01), a valve seat (C) forming an inward flange shape between the communication port (A) and the suction port co, and the circulation port O3. It is connected and the above suction port is 0! ]) consists of a pressure waterway ■ opened in the center. In addition, the northern connection port (a) and the 1st valve seat (c)
A sliding portion () and a threaded portion (e) of a stopper (6), which will be described later, are formed between the two. (3) is a nozzle that is screwed onto the opening (a) of the pressure waterway mentioned above and has a discharge outlet at the bottom, and (4) is concentric with this nozzle (3) and inside the communication port (e). The discharge side is located in the suction chamber θυ
This is a vertically arranged diffuser located inside the suction chamber Qυ and configured to move along the sliding portion (e) due to the pressure difference between the suction chamber Qυ and the suction port (al).
（４０は上記摺動部（至）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（ト）の座面から離脱している。（イ）は上記
鍔部（４１）に連続して形成され、上記吸込室Ｏυに向
って延在した複数個の案内部であり、」−記デイフユー
ザ（４）の上下動時に上記ディフューザ（４）を上記摺
動部（ホ）に沿って上下動するように案内するためのも
のである。（４Ｂ）は上記ディフューザ（４）の吸込側
内局部に形成された縮少部、帆はこの縮少部（４）に連
続したスロート部、（４５）はこのスロート部（ロ）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。なお、上記スロート部■と上記拡大
部（４）は最適な流路断面積を有するように形成されて
いる。また、上記縮少部（４３）の外周と上記弁座−の
内周との間は適宜の隙間（至）が構成され、また更に、
上記鍔部（４１）の外周と上記摺動部（ハ）の内周との
間は適宜の隙間（２）が構成されている。また、ディフ
ューザ（４）は上記うず巻ポンプ（１）の吐出口（２）
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０◇と上記吸込ロシυとの圧力差
により、上記ディフューザ（４）が上記吸込口（ハ）即
ち下方に向って容易に移動できるように構成されている
。（６）は上記ジェット本体（２）の螺合部（イ）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。(Denoted at 40 is an outward facing flange formed on the outer periphery of the suction side of the diffuser (4) with a predetermined gap from the sliding part (to), and when the centrifugal pump (1) is stopped, one end are detached from the seating surface of the valve seat (G). (A) are a plurality of guide parts formed continuously on the flange (41) and extending toward the suction chamber Oυ. , ” - This is for guiding the diffuser (4) to move up and down along the sliding portion (E) when the diffuser (4) moves up and down. (4B) is for guiding the diffuser (4) to move up and down along the sliding portion (E). A reduced part formed in the inner part of the suction side, the sail is a throat part that is continuous to this reduced part (4), and (45) is continuous to this throat part (b) and is connected to the above-mentioned centrifugal pump (1) side. This is an enlarged portion that gradually expands in the direction.The throat portion (2) and the enlarged portion (4) are formed to have an optimal flow path cross-sectional area.Also, the reduced portion (43) An appropriate gap is formed between the outer periphery of the valve seat and the inner periphery of the valve seat, and further,
An appropriate gap (2) is formed between the outer periphery of the collar portion (41) and the inner periphery of the sliding portion (C). Further, the diffuser (4) is connected to the discharge port (2) of the above-mentioned centrifugal pump (1).
When the discharge amount from the suction chamber falls below the specified amount (approximately 1 to 21/min), the pressure difference between the suction chamber 0◇ and the suction chamber υ causes the diffuser (4) to close to the suction port (C), that is, the downward direction. It is constructed so that it can be easily moved towards. (6) is a stopper that is screwed onto the threaded portion (A) of the jet main body (2) and restricts the axial movement of the diffuser (4) within a predetermined range.
る、。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（６υが構成さ
れている。（７）は上記隙間Ｍ Ｈ（６１）、及び上記
ディフューザ（４）外周と上記摺動部＠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＠がらの吐
出量が上記規定量以」−の場合と、上記うず巻ポンプ（
］）が停止している場合とにおいて上記吸込口なっと−
に記吸込室θ１）とを連通ずるものである。（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ａ’
；ａ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。なお、
第２図の横軸は吐出量、すなわち流量（Ｑ）で、縦軸は
吐出圧、すなわち揚程（Ｈ）である。Ru,. Note that an appropriate gap (6υ) is formed between the inner periphery of the stopper (6) and the outer periphery of the diffuser (4). 4) It is a bypass passage consisting of a gap between the outer periphery and the above-mentioned sliding part@inner periphery, and when the discharge amount of the above-mentioned discharge port@gara is more than the above-mentioned specified amount, and when the above-mentioned centrifugal pump (
]) is stopped and the above suction port is -
The suction chamber θ1) is communicated with the suction chamber θ1). (8) is a gasket that provides a watertight connection between the centrifugal pump (1) and the jet body (2), and (9) is the discharge port a'.
; is installed in the above-mentioned centrifugal pump (1) to detect the discharge pressure.
), and the off pressure is set to a pressure higher than the maximum pressure when operating as a centrifugal pump (1) as shown in Fig. 2. In addition,
The horizontal axis in FIG. 2 is the discharge amount, ie, the flow rate (Q), and the vertical axis is the discharge pressure, ie, the head (H).
上記のように構成されたものにおいては、ウス巻ポンプ
（］）が停止している状態で吐出口（２）からの水を吐
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 above, when water is discharged from the discharge port (2) while the spiral pump (]) is stopped, the pressure inside the spiral pump (1) gradually decreases. Finally, the pressure switch (9) is closed and the centrifugal pump (1) is started.
ここで、ディフューザ（４）は自重により連通口（財）
に向って付勢されているので、鍔部（４１）と弁座りと
は離脱しており、バイパス通路（７）は吸込室Ｑυと吸
込口３◇とを連通している。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（４−０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Ｑυ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Ｉ？＠ （７）とを通過して吸込室０
υへと導入される。次に、水の吐出量が少ない場合には
、スロート部（４→にキャビテーションが発生しないの
で、拡大部（２）による昇圧作用は順調におこなわれ、
吸込室θυの圧力が吸込口（ハ）の圧力よりも大となり
、吸込室θυの水の一部がバイパス通路（７）を介して
吸込口な］）へと逆流を開始し、ディフューザ（４）は
吸込室θυと吸込口０１）との圧力差で吸込口シ１）へ
向って移動しようとする。ところが、ディフューザ（４
）は自重によって吸込室０］）へ向って付勢゛され、そ
の自重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。このため、バイパ
ス通路（７）は吸込室０１）と吸込口Ｑ０とを連通した
状態で維持され、上記圧力差で吸込室Ｏυ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。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。一方、水の吐出量がきわめて少量（例えば１
〜２２／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θυの圧力が吸込口＆１）の圧力よりも過大となり、
その圧力差により吸込室０］）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
）がその自重に抗して吸込口０１）側即ち上方に向って
移動し、ついには弁座（ハ）の座面に鍔部（４１）が当
接する。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０乃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。従って、吐出口＠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。なお、停止した場合
には、おのずから吸込室（ＩＩ）と吸込口Ｑ０との圧力
差が消滅するので、ディフューザ（４）はその自重で再
び吸込室０υに向って移動し、バイパス通路（７）が連
通状態に復帰することは言うまでもない。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。Here, the diffuser (4) will open due to its own weight.
Since the valve is biased toward , the flange (41) and the valve seat are separated from each other, and the bypass passage (7) communicates the suction chamber Qυ with the suction port 3◇. Therefore, when a large amount of water is discharged, a well-known bypass is effective when a large amount of water passes through the diffuser (4), causing cavitation at the throat section (4-0) of the diffuser (4). It is operated as a jet pump with a passage, and the water at the suction port Qυ is attracted by the negative pressure in the suction chamber (11) and flows into the diffuser (4).
) inside and bypass I? @ Pass through (7) and suction chamber 0
introduced into υ. Next, when the amount of water discharged is small, cavitation does not occur at the throat section (4→), so the pressure increasing effect by the enlarged section (2) is carried out smoothly.
The pressure in the suction chamber θυ becomes higher than the pressure in the suction port (c), and a portion of the water in the suction chamber θυ begins to flow back through the bypass passage (7) to the suction port (c), and the diffuser (4) ) tries to move toward the suction port 1) due to the pressure difference between the suction chamber θυ and the suction port 01). However, the diffuser (4
) is urged toward the suction chamber 0]) by its own weight, and since its own weight is greater than the above pressure difference, the diffuser (
4) will be prevented from moving. Therefore, the bypass passage (7) is maintained in a state where the suction chamber 01) and the suction port Q0 are communicated, and a part of the water in the suction chamber Oυ remains in a state where it flows backward due to the pressure difference, and the jet body (2 ), the pumping device is operated solely by the centrifugal pump (1). By the way, since the off pressure of the pressure switch (9) is set to a higher pressure than the maximum pressure of the centrifugal pump (1), the pump device is operated solely by the centrifugal pump (1) as described above. In this case, the pressure switch (9) will be operated continuously in the on state. On the other hand, the amount of water discharged is extremely small (for example, 1
~22/min) or when the discharge amount is zero,
The pressure increasing effect of the diffuser (4) is greatly improved, and the pressure in the suction chamber θυ becomes excessive than the pressure at the suction port &1).
Due to the pressure difference, the water in the suction chamber (0]) flows into the bypass passage (7
) through the diffuser (4).
) moves toward the suction port 01), that is, upward, against its own weight, and finally the flange (41) comes into contact with the seat surface of the valve seat (c). Therefore, the backflow of water is of course prevented, but the pressure at the discharge port 0 becomes extremely high due to the pressure increase due to the cooperative action of the centrifugal pump (1) and the diffuser (4). Therefore, the pressure at the outlet @ is set by the pressure switch (
9) is reached, the pressure switch (9) is turned off, and the centrifugal pump (1) is stopped. In addition, when it is stopped, the pressure difference between the suction chamber (II) and the suction port Q0 naturally disappears, so the diffuser (4) moves again toward the suction chamber 0υ by its own weight, and the bypass passage (7) Needless to say, the communication state is restored. 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。従って、吐出
量、即ち流量がＱｌ−０２の範囲では、うず巻ポンプ（
１）単独の特性Ｃ−Ｄとなる。このため、吐出口θ諺の
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１こなる。とこ
ろが、Ｑｌを下廻ると吸込室０１）の圧力が吸込口Ｑ１
）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。この場合、水は吐出口０望から吐
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（］）が運転される。That is, when the bypass passage (7) is in communication, there is no pumping action within the jet body (1), so the centrifugal pump (1) is operated independently. Therefore, when the discharge amount, that is, the flow rate is in the range of Ql-02, the centrifugal pump (
1) It becomes a single characteristic CD. Therefore, the pressure at the discharge port θ does not reach the off pressure of the pressure switch (9), so
The centrifugal pump (1) is operated continuously. However, when the pressure in the suction chamber 01) goes below Ql, the pressure in the suction port Q1
), the bypass passage (7) is closed, and the pumping characteristics of the pump device are rapidly improved due to the cooperation between the centrifugal pump (1) and the diffuser (4), resulting in C-+B. Since the discharge pressure at that time exceeds the off pressure of the pressure switch (9), the centrifugal pump (1) stops. In this case, since the water is being discharged from the discharge port 0, the discharge pressure will eventually decrease to below the ON pressure of the pressure switch (9), and the pressure switch (9) will be turned on again.
9) is closed and the centrifugal pump (]) is operated.
このように、Ｑｏ ”’Ｑｌ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）が自重で吸込側に向
って付勢されているので、その自重を適宜に選定するこ
とにより、Ｑｌの流量を従来と同様の１〜２１／分程度
の値に容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。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（１）に螺着されているので、ストッパ
（６）を回動させるコトにディフューザ（４）がストッ
パ（６）と共に前進あるいは後退してディフューザ（４
）の下方への移動量を適宜に調整でき、据付現場におい
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 this way, in the range of Qo'''Ql, the pressure switch (
9) will repeat the opening and closing operation, but in the pump device with the above configuration, the diffuser (4) is biased toward the suction side by its own weight, so by appropriately selecting its own weight, Ql can be reduced. The flow rate can be easily set to a value of about 1 to 21/min, similar to the conventional one, and the centrifugal pump (1) can be operated continuously even with such a very small discharge amount. In addition, in the pump device having the above configuration, since the stopper (6) for regulating the axial movement dimension of the diffuser (4) is screwed onto the threaded portion (1), it is difficult to rotate the stopper (6). The diffuser (4) moves forward or backward together with the stopper (6).
) can be appropriately adjusted, and the flow rate Q1 can be arbitrarily set at the installation site.
この発明は以上のように、ジェット本体に垂直に設けら
れて上記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上下動自在に支承
され、上記ジェット本体の吸込側と吐出側との圧力差に
応じて上下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、及びこの弁部の上面に対向し
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を備えたので、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 includes a bypass passage provided perpendicularly to the jet body and capable of communicating the suction side and the discharge side of the jet body; A diffuser that can move up and down depending on 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 facing the upper surface of the valve part and communicating with the valve part. Since it is equipped with a valve seat that can open and close the bypass passage by moving toward and away from the valve seat, the pump device is not only much cheaper than the conventional pump device that uses a special valve device, but also has almost no external dimensions. Since the valve device is placed in a bypass passage provided in the jet body or diffuser that does not affect the pump, the pump device can be made much smaller and more compact compared to conventional pumps that have a valve device on the discharge side of a centrifugal pump. be.
また、更に、ディフューザそのものが自重で変位し、弁
装置として作用するものであるｔこめ、ディフューザを
付勢する手段が不要となり、構成が極めて簡素化される
効果がある。なお、ディフューザの下方への移動量を規
制する螺合部材を設けたものでは、ディフューザの移動
量を自由に設定でき、流量Ｑ１の値を任意に選択できる
効果がある。Furthermore, since the diffuser itself is displaced by its own weight and acts as a valve device, there is no need for means for biasing the diffuser, resulting in an extremely simple configuration. In addition, when a screw member is provided to restrict the amount of downward movement of the diffuser, the amount of movement of the diffuser can be freely set, and the value of the flow rate Q1 can be arbitrarily selected.
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口である。
図において、（１）はうず巻ポンプ、（２）はジェット
本体、勾は弁座、（４）はディフューザ、（４１）は鍔
部、（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。
代理人 大 岩 増 雄FIG. 1 is a sectional view showing an embodiment of the present invention, and FIG. 2 is a characteristic port showing a pump characteristic curve of the present invention. In the figure, (1) is the centrifugal pump, (2) is the jet body, the slope is the valve seat, (4) is the diffuser, (41) is the flange, (6) is the stopper, and (7) is the bypass passage. . Note that the same reference numerals in each figure indicate the same or corresponding parts. Agent Masuo Oiwa
Claims (2)
たジェット本体、このジェット本体に垂直に設けられて
上記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上下動自在に支承され
、１記ジ工ツト本体の吸込側と吐出側との圧力差に応じ
て上下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、及びこの弁部の上面に対向して上
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を備えた自動式電動ポン
プ装置。(1) A jet body arranged vertically and communicating with the suction side of the electric centrifugal pump, a bypass passage provided perpendicularly to the jet body and capable of communicating the suction side and the discharge side of the jet body, this bypass passage a diffuser that is supported in a vertically movable manner and that can move vertically in accordance with the pressure difference between the suction side and the discharge side of the joint main body; a valve portion integrally provided with this diffuser; and this valve portion. An automatic electric pump device comprising: a valve seat formed in the bypass passage so as to face an upper surface thereof and capable of opening and closing the bypass passage by coming into contact with and separating from the valve portion.
たジェット本体、このジェット本体に垂直に設けられて
上記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上下動自在に支承され
、上記ジェット本体の吸込側と吐出側との圧力差に応じ
て上下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、及びこの弁部の上面に対向して上
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、及び上記バイパス通路
に螺合され、その螺合量に応じて上記ディフューザの下
方へ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。(2) A jet body that communicates with the suction side of the electric centrifugal pump and is arranged vertically, a bypass passage that is vertically provided in the jet body and can communicate the suction side and the discharge side of the jet body, and inside this bypass passage. a diffuser supported vertically and movably in response to a pressure difference between the suction side and the discharge side of the jet body; a valve portion integrally provided with the diffuser; and a valve portion facing the upper surface of the valve portion. a valve seat formed in the bypass passage and capable of opening and closing the bypass passage by engaging and separating from the valve portion; and a valve seat that is screwed into the bypass passage and adjusts the amount of downward movement of the diffuser depending on the amount of screwing. An automatic electric pump device equipped with a threaded member that regulates
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6467183A JPS5941693A (en) | 1983-04-11 | 1983-04-11 | Automatic electrical pump apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6467183A JPS5941693A (en) | 1983-04-11 | 1983-04-11 | Automatic electrical pump apparatus |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13439977A Division JPS5917277B2 (en) | 1977-11-08 | 1977-11-08 | Automatic electric pump device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5941693A true JPS5941693A (en) | 1984-03-07 |
| JPS6356436B2 JPS6356436B2 (en) | 1988-11-08 |
Family
ID=13264872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6467183A Granted JPS5941693A (en) | 1983-04-11 | 1983-04-11 | Automatic electrical pump apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5941693A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4782563A (en) * | 1986-05-06 | 1988-11-08 | Yoshida Kogyo K. K. | End stop for slide fasteners |
| US4817252A (en) * | 1986-05-06 | 1989-04-04 | Yoshida Kogyo K. K. | Fluid-tight slide fastener |
-
1983
- 1983-04-11 JP JP6467183A patent/JPS5941693A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4782563A (en) * | 1986-05-06 | 1988-11-08 | Yoshida Kogyo K. K. | End stop for slide fasteners |
| US4817252A (en) * | 1986-05-06 | 1989-04-04 | Yoshida Kogyo K. K. | Fluid-tight slide fastener |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6356436B2 (en) | 1988-11-08 |
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