JP7503509B2 - Pumping equipment - Google Patents

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JP7503509B2
JP7503509B2 JP2021018810A JP2021018810A JP7503509B2 JP 7503509 B2 JP7503509 B2 JP 7503509B2 JP 2021018810 A JP2021018810 A JP 2021018810A JP 2021018810 A JP2021018810 A JP 2021018810A JP 7503509 B2 JP7503509 B2 JP 7503509B2
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water
casing
plate
priming
separation chamber
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JP2022121852A (en
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大寛 笹山
道夫 大和田
哲也 野村
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Hitachi Global Life Solutions Inc
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Description

本発明はポンプ装置に関するものである。 The present invention relates to a pump device.

従来のポンプ装置として特許文献１に示すものがある。特許文献１では、吸込管内の空気を脱気する自吸動作中、気水分離内の水が気水分離室吐出口から流出するのを抑制するため、気水分離室に自吸板を設け、自吸性能の安定化を図っていた。 A conventional pump device is shown in Patent Document 1. In Patent Document 1, a self-priming plate is provided in the water-air separation chamber to prevent water in the water-air separation chamber from flowing out of the water-air separation chamber discharge port during the self-priming operation to remove air from the suction pipe, stabilizing the self-priming performance.

特開２０１８－１７８８５５号公報JP 2018-178855 A

自吸動作中、気水分離室内の水は、気水分離室吐出口からの流出と、逆止弁から水源側に落下するため、徐々に少なくなる。 During self-priming, the water in the water separation chamber gradually decreases as it flows out from the discharge port of the water separation chamber and falls through the check valve to the water source.

さらなる安定した自吸性能を得るには、気水分離室内に十分な水を溜めておく必要がある。 To achieve even more stable self-priming performance, it is necessary to store sufficient water in the air-water separation chamber.

特許文献１の構成では、気水分離室吐出口からの流出は抑制できるが、逆止弁から水源側への落水が生じており、更なる安定した自吸性能を得るには不十分であった。 The configuration of Patent Document 1 can suppress outflow from the discharge port of the air-water separation chamber, but water still falls from the check valve to the water source, which is insufficient to achieve a more stable self-priming performance.

本発明の目的は、逆止弁から水源側への落水を抑止し、安定した自吸性能を得ることが可能なポンプ装置を提供することである。 The object of the present invention is to provide a pump device that can prevent water from falling from the check valve into the water source and achieve stable self-priming performance.

上記課題を解決するために、本発明の電動機に連結された羽根車をケーシング内に収納したポンプ装置は、ケーシング内に設けたケーシング吸込口とケーシング吐出口と、ケーシング上部に設けられ、水源側から水を吸い込む吸込通路と、ケーシング上部に設けられ、ケーシング吐出口に連通した気水分離室と、水源側とケーシング吸込口間の水平方向通路の天井壁から下方に突き出して設けた逆止弁と、逆止弁とケーシング吸込口間の水平方向通路の天井壁から下方に突き出して設けた逆流水防止板と、を有し、前記逆流水防止板は、前記逆止弁の弁座より下方に延びて設けられ、前記逆流水防止板の下方に、水源側からの水が前記ケーシング吸込口側へ流れる隙間が形成されている。 In order to solve the above problems, the pump device of the present invention, which has an impeller connected to an electric motor housed within a casing, has a casing suction port and a casing discharge port provided within the casing, an suction passage provided at the top of the casing for drawing in water from the water source side, an air-water separation chamber provided at the top of the casing and connected to the casing discharge port, a check valve provided to protrude downward from the ceiling wall of the horizontal passage between the water source side and the casing suction port, and a backflow water prevention plate provided to protrude downward from the ceiling wall of the horizontal passage between the check valve and the casing suction port , the backflow water prevention plate extending downward from the valve seat of the check valve, and a gap is formed below the backflow water prevention plate through which water from the water source side flows toward the casing suction port side.

本発明によれば、逆止弁から水源側への落水を抑止し、安定した自吸性能を得ることが可能なポンプ装置を提供することができる。 The present invention provides a pump device that can prevent water from falling from the check valve to the water source and achieve stable self-priming performance.

本発明の一実施形態に係るポンプ装置の斜視図である。1 is a perspective view of a pump device according to an embodiment of the present invention; 本発明の一実施形態に係るポンプ装置の縦断面図である。1 is a vertical cross-sectional view of a pump device according to an embodiment of the present invention. 図１のバルブカバーの斜視図である。FIG. 2 is a perspective view of the valve cover of FIG. 1 .

以下、本発明の一実施例を図１から図３を用いて説明する。 Below, one embodiment of the present invention will be described with reference to Figures 1 to 3.

ポンプ装置１００は、電動機１と、羽根車５と、この羽根車５を内置するケーシング３と、ケーシング３の前面を閉じるケーシングカバー４を有するポンプヘッド部１０１と、圧力タンク６と、圧力センサ７と、呼水給水用栓８と、ポンプカバー（不図示）とで概略構成されている。 The pump device 100 is generally composed of an electric motor 1, an impeller 5, a casing 3 in which the impeller 5 is placed, a pump head portion 101 having a casing cover 4 that closes the front of the casing 3, a pressure tank 6, a pressure sensor 7, a priming water supply plug 8, and a pump cover (not shown).

圧力タンク６は、略円筒形状の部材である。圧力タンク６の上方には、圧力センサ７と、呼水給水用栓８と、ポンプヘッド部１０１とが構成され、圧力タンク６の上面に固定されている。 The pressure tank 6 is a generally cylindrical member. Above the pressure tank 6, a pressure sensor 7, a priming water supply plug 8, and a pump head 101 are arranged and fixed to the top surface of the pressure tank 6.

圧力タンク６は、ポンプヘッド部１０１で加圧した水を蓄水するものである。 The pressure tank 6 stores water pressurized by the pump head section 101.

圧力センサ７は、ポンプ部ヘッド１０１から吐出された液体が流れる通水路に取り付けられ、ポンプ室内の圧力値を検出するセンサである。 The pressure sensor 7 is attached to the water passage through which the liquid discharged from the pump head 101 flows, and is a sensor that detects the pressure value inside the pump chamber.

圧力センサ７の検出結果は、制御用コントローラ２０に入力され、制御用コントローラ２０により統合制御されることで、ポンプヘッド部１０１の起動・停止を制御するものである。 The detection results of the pressure sensor 7 are input to the control controller 20, which performs integrated control to control the start and stop of the pump head section 101.

ポンプカバー（不図示）は、下面および一部側面が開口した略円筒体凹形状の部材である。ポンプカバー（不図示）は圧力タンク６に対し着脱自在である。これは、ポンプヘッド部１０１や制御用コントローラ２０等を操作、修理可能とするためである。 The pump cover (not shown) is a generally cylindrical, concave member with openings on the bottom and some of the sides. The pump cover (not shown) can be easily attached and detached from the pressure tank 6. This is to allow the pump head 101, the controller 20, etc. to be operated and repaired.

ポンプカバー（不図示）は、圧力タンク６に固定することで、ポンプカバーと圧力タンク６との間で、ポンプヘッド部１０１の大部分と、圧力センサ７と呼水給水用栓８全部を覆うものである。ポンプカバーにより、ポンプヘッド部１０１等から発生する騒音がポンプ装置１００の外に伝わる恐れを低減することができる。 The pump cover (not shown) is fixed to the pressure tank 6, and covers most of the pump head 101, the pressure sensor 7, and the priming water supply plug 8 between the pump cover and the pressure tank 6. The pump cover reduces the risk of noise generated by the pump head 101, etc. being transmitted outside the pump device 100.

図２に示す通り、電動機１に連結された羽根車５はケーシング３内に収納されている。このケーシング３はケーシング吸込口３ａおよびケーシング吐出口３ｂを有している。 As shown in FIG. 2, the impeller 5 connected to the electric motor 1 is housed in the casing 3. The casing 3 has a casing suction port 3a and a casing discharge port 3b.

ケーシング３上面には、吸込通路２１および気水分離室２２を有するヘッドチャンバー２３が固定されている。 A head chamber 23 having an intake passage 21 and an air-water separation chamber 22 is fixed to the top surface of the casing 3.

この吸込通路２１はケーシング吸込口３ａに連通し、気水分離室２２の下面左側部分がケーシング吐出口３ｂの上面に連通している。 This suction passage 21 is connected to the casing suction port 3a, and the left side of the lower surface of the water-air separation chamber 22 is connected to the upper surface of the casing discharge port 3b.

気水分離室２２内には、衝突板、主板５０ｂ、分離板、分流板５０ｄ、水平板５０ｅ、巻き込み防止板を備えた自吸板５０が下面から挿入されている。 A self-priming plate 50 equipped with an impact plate, main plate 50b, separation plate, flow dividing plate 50d, horizontal plate 50e, and entrapment prevention plate is inserted from the bottom into the water-air separation chamber 22.

衝突板は、自吸板５０の下端部に設けられ、図２によれば、気水分離室２２の紙面手前側のみ塞ぐ場所に配される。 The impact plate is provided at the lower end of the self-priming plate 50, and according to FIG. 2, is positioned in a location that blocks only the front side of the air-water separation chamber 22.

主板５０ｂは、鉛直方向に気水分離室２２内の下端面から上端面まで設けられている。また、分離板は、衝突板の反対側で気水分離室２２内の下端面と上端面の中間に位置し、衝突板側の端部が上側になる様傾斜して設けられている。 The main plate 50b is installed vertically from the lower end surface to the upper end surface inside the water-air separation chamber 22. The separation plate is located halfway between the lower end surface and the upper end surface inside the water-air separation chamber 22 on the opposite side of the collision plate, and is installed at an angle so that the end on the collision plate side is on the upper side.

ヘッドチャンバー２２の上面には、呼水注水用栓８が設けられている。 A priming water injection plug 8 is provided on the top surface of the head chamber 22.

次に自吸作用について説明する。呼水注水用栓８を外して気水分離室２２内に呼び水を注水した後に、羽根車５を回転させると、吸込側の空気と呼び水とは混合された気水混合液の大部分が分流板５０ｄの紙面左側を流れＶのように上昇する（図２参照）。 Next, the self-priming action will be explained. After removing the priming water injection plug 8 and injecting priming water into the air-water separation chamber 22, the impeller 5 is rotated, and most of the air-water mixture that is a mixture of the suction side air and the priming water flows to the left of the flow divider plate 50d on the page and rises in a V shape (see Figure 2).

この気水混合液は、衝突板に衝突して分離板側に偏向されて気水分離室２２内に流入上昇する流れＷとなる。 This air-water mixture collides with the collision plate and is deflected toward the separation plate, becoming a flow W that flows upward into the air-water separation chamber 22.

次いで、分離板に至り、この部分にて２つの流れＸとＹとに分流する。流れＸはほとんどが水であり、分離板の下側を通過し、主板５０ｂの反対側に至る。又、流れＹは空気を多く含んだ気水混合液であり、分離板の上方から主板５０ｂの反対側に至る間に空気が上方へ分離され、水のみとなる。 Then, it reaches the separation plate where it splits into two flows, X and Y. Flow X is mostly water, passes under the separation plate, and reaches the opposite side of the main plate 50b. Flow Y is an air-water mixture that contains a lot of air, and the air is separated upwards as it passes from above the separation plate to the opposite side of the main plate 50b, leaving only water.

図２に示すように、流れＸ、Ｙは流れＺとなって衝突板の下側に流入する。この戻り水は、分流板５０ｄ側面で流れＺを形成し、羽根車５に供給され、吸込側の空気と再度気水混合液を形成する。この動作を繰り返すことにより自吸作業を完了する。 As shown in Figure 2, flows X and Y become flow Z and flow below the collision plate. This return water forms flow Z on the side of the flow dividing plate 50d and is supplied to the impeller 5, where it again forms an air-water mixture with the air on the suction side. This operation is repeated to complete the self-priming process.

従来例（特開昭６１－２７７８９３号公報）の第１図にあるように自吸式ウエスコポンプには、流れＥの戻り水の通路となる分流壁が必要である。一方で、ケーシング３の材質は従来の砲金製等の鋳造加工品から、安価で加工レスとなる合成樹脂製が主流になりつつある。しかしながら、ケーシングに形成している分流壁では、合成樹脂製ケーシングでは金型構造上、一体成型ができず追加部品によるコスト増加が懸念される。 As shown in Fig. 1 of the conventional example (JP Patent Publication 61-277893), the self-priming Wesco pump requires a flow dividing wall to serve as a passage for the return water of flow E. Meanwhile, the material of the casing 3 is becoming more and more mainstream, moving away from the conventional cast parts such as gunmetal and toward synthetic resin, which is inexpensive and does not require machining. However, the flow dividing wall formed on the casing cannot be molded as a single piece with a synthetic resin casing due to the mold structure, and there are concerns about increased costs due to the additional parts.

本発明によると自吸板５０の下方に従来例の分離壁と同等の機能を有する分流板５０ｄを一体で形成しており安価に構成が可能である。 According to the present invention, a flow dividing plate 50d, which has the same function as the separation wall of the conventional example, is integrally formed below the self-priming plate 50, making it possible to construct it at low cost.

自吸時の留意点として、呼び水量の減少による自吸作用不可がある。自吸中は吸込管からの脱気の際、気水分離室２２内の水面に波を発生させ、気水分離室吐出口２２ａに流出するため、呼び水量が減少し羽根車５上端付近まで水位が低下すると、自吸作用しなくなる。そのため、気水分離室２２には気水分離室吐出口２２ａへの流出による減少分の蓄水が必要となり安易にケーシング３を小形化することは困難である。 One thing to keep in mind when self-priming is that a decrease in the amount of priming water will cause self-priming to become impossible. During self-priming, when air is released from the suction pipe, waves are generated on the water surface inside the water-air separation chamber 22, which then flows out of the water-air separation chamber discharge port 22a. If the amount of priming water decreases and the water level drops to near the top of the impeller 5, self-priming will no longer occur. As a result, the water-air separation chamber 22 needs to store the amount of water lost due to the flow out of the water-air separation chamber discharge port 22a, making it difficult to easily reduce the size of the casing 3.

対応としては、気水分離室２２の容積を拡大させ呼び水容量を増加させる、気水分離室吐出口２２ａの高さを上げて流入を防止する等があるがいずれもポンプ本体の大形化に繋がる。 Measures to address this include expanding the volume of the water-air separation chamber 22 to increase the priming capacity, or raising the height of the water-air separation chamber discharge port 22a to prevent inflow, but either of these measures would result in an increase in the size of the pump body.

本発明によると、気水分離室吐出口２２ａ下端とほぼ同じ高さで水平に形成された水平板５０ｅとその水平板５０ｅ上の気水分離室吐出口２２ａの側面に略直交して形成された巻き込み防止板を備えた自吸板５０を設けたことにより、水平板５０ｅで波の発生を抑制し、さらに気水分離室２２内壁から伝って気水分離室吐出口２２ａに流出する水の流れを抑制することで、自吸時の呼び水量減少を抑制しつつポンプの小形化を図る効果を奏する。 According to the present invention, a self-priming plate 50 is provided that is equipped with a horizontal plate 50e formed horizontally at approximately the same height as the lower end of the air-water separation chamber discharge port 22a, and an anti-entrapment plate formed approximately perpendicular to the side of the air-water separation chamber discharge port 22a on the horizontal plate 50e. This suppresses the generation of waves with the horizontal plate 50e, and further suppresses the flow of water that flows from the inner wall of the air-water separation chamber 22 to the air-water separation chamber discharge port 22a, thereby suppressing the reduction in the amount of priming water during self-priming while minimizing the size of the pump.

本発明によれば、ケーシング吐出口３ｂから上昇する気水混合液の上方向の流れを分離板にて上下の２つの流れに分流するので、その際の水と空気の分離が良好に行われる。また、吐出水流と戻り水流とが衝突せず効率よく流れる様に旋回防止用として主板５０ｂが設けられているので、この点からも自吸性能が向上するものである。したがって、気水分離室２２の容積を小さくすることができる。 According to the present invention, the upward flow of the air-water mixture rising from the casing discharge port 3b is divided into two flows, upper and lower, by the separation plate, so that the water and air are separated well. In addition, the main plate 50b is provided to prevent swirling so that the discharge water flow and the return water flow can flow efficiently without colliding, which also improves the self-priming performance. Therefore, the volume of the air-water separation chamber 22 can be reduced.

尚、自吸板５０はヘッドチャンバー２３と別体に形成して挿入して取付けているので、ポンプのモータ出力に応じて羽根車５、ケーシング３等が異なっても、ヘッドチャンバー２３を同一のものを使用して、自吸板５０のみを取り換えて効率のよい自吸性能を得ることができる。 The self-priming plate 50 is formed separately from the head chamber 23 and then inserted and attached. Therefore, even if the impeller 5, casing 3, etc. are different depending on the motor output of the pump, the same head chamber 23 can be used and only the self-priming plate 50 can be replaced to obtain efficient self-priming performance.

一方、自吸動作中、気水分離室２２内の水は、気水分離室吐出口２２ａからの流出と、逆止弁９から水源側に落下するため、徐々に少なくなる。 Meanwhile, during self-priming, the water in the water-air separation chamber 22 gradually decreases as it flows out from the water-air separation chamber outlet 22a and falls through the check valve 9 to the water source.

安定した自吸性能を得るためには、気水分離室２２内に十分な水を溜めておく必要がある。これまで、気水分離室吐出口２２ａから流出について説明してきたが、以下水源側とケーシング吸込口３ａ間に設けた逆止弁９から水源側への落水を抑制する構成について説明する。 To obtain stable self-priming performance, it is necessary to store a sufficient amount of water in the water-air separation chamber 22. Up to this point, we have explained the outflow from the water-air separation chamber discharge port 22a, but below we will explain the configuration that prevents water from falling to the water source side from the check valve 9 installed between the water source side and the casing suction port 3a.

図２、図３に記載のように、本発明は、バルブカバー６０に逆流水防止板６１を設ける構成とした。 As shown in Figures 2 and 3, the present invention is configured to provide a backflow prevention plate 61 on the valve cover 60.

逆流水防止板６１は、ケーシング吸込口３ａと逆止弁９の間に設け、逆止弁９側へ逆流した水の流れＪに対して、逆止弁９から水源側への落水を抑止し、ケーシング吸込口３ａ側へ水を戻すことが可能となる。また、逆流水防止板６１は、ケーシング吸込口３ａからの逆流水を受け止めやすいように、ケーシング吸込口３ａ側に凹んだ曲面形状とする。 The backflow prevention plate 61 is provided between the casing suction port 3a and the check valve 9, and prevents water from falling from the check valve 9 to the water source side in response to the flow of water J that has flowed back toward the check valve 9 side, making it possible to return the water to the casing suction port 3a side. In addition, the backflow prevention plate 61 has a curved shape that is concave toward the casing suction port 3a side so that it can easily catch backflow water from the casing suction port 3a.

なお、水源側からの水がケーシング吸込口３ａ側へ流れる隙間（所定の間隔）は必要な為、完全に水路を防ぐものでは無い。 However, because a gap (a specified distance) is necessary for water to flow from the water source to the casing suction port 3a, it does not completely prevent water passage.

これにより、いままで逆止弁９から水源側への落水していた水を逆流水防止板６１にてケーシング吸込口３ａ側へ水を戻すことが可能となり、気水分離室２２内に十分な水を溜めておくことが可能となり、安定した自吸性能を得ることが可能となる。 As a result, the water that previously fell from the check valve 9 to the water source can now be returned to the casing suction port 3a side by the backflow prevention plate 61, making it possible to store sufficient water in the air-water separation chamber 22 and achieving stable self-priming performance.

なお、本実施例では図３のようにバルブカバー６０に逆流水防止板６０を一体形成したが、物理的に分離されていても、逆流水を抑止できるなら問題ない。つまり、バルブカバー６０と逆流水防止板６１を別部材で設けても良い。ただ、一体形成することで、部品点数を下げ、低コスト化を図ると共に、製造し易くする効果がある。 In this embodiment, the backflow prevention plate 60 is integrally formed with the valve cover 60 as shown in FIG. 3, but there is no problem if they are physically separated as long as backflow water can be prevented. In other words, the valve cover 60 and the backflow prevention plate 61 may be provided as separate members. However, forming them integrally reduces the number of parts, reduces costs, and makes manufacturing easier.

１・・・電動機、３・・・ケーシング、３ａ・・・ケーシング吸込口、３ｂ・・・ケーシング吐出口、４・・・ケーシングカバー、５・・・羽根車、６・・・圧力タンク、７・・・圧力センサ、８・・・呼水給水用栓、９・・・逆止弁、１３・・・水通路、１７・・・隔壁、１８・・・空気補給装置、２０・・・制御用コントローラ、２１・・・吸込通路、２２・・・気水分離室、２２ａ・・・気水分離室吐出口、２３・・・ヘッドチャンバー、５０・・・自吸板、５０ｂ・・・主板、５０ｄ・・・分流板、５０ｅ・・・水平板、６０・・・バルブカバー、６１・・・逆流水防止板、１００・・・ポンプ装置、１０１・・・ポンプヘッド部 1: motor, 3: casing, 3a: casing suction port, 3b: casing discharge port, 4: casing cover, 5: impeller, 6: pressure tank, 7: pressure sensor, 8: priming water supply valve, 9: check valve, 13: water passage, 17: bulkhead, 18: air supply device, 20: control controller, 21: suction passage, 22: water-air separation chamber, 22a: water-air separation chamber discharge port, 23: head chamber, 50: self-priming plate, 50b: main plate, 50d: flow dividing plate, 50e: horizontal plate, 60: valve cover, 61: backflow prevention plate, 100: pump device, 101: pump head section

Claims (3)

電動機に連結された羽根車をケーシング内に収納したポンプ装置であって、
前記ケーシング内に設けたケーシング吸込口とケーシング吐出口と、
前記ケーシング上部に設けられ、水源側から水を吸い込む吸込通路と、
前記ケーシング上部に設けられ、前記ケーシング吐出口に連通した気水分離室と、
水源側と前記ケーシング吸込口間に設けた逆止弁と、
前記逆止弁と前記ケーシング吸込口間の水平方向通路の天井壁から下方に突き出して設けた逆流水防止板と、
を有し、
前記逆流水防止板は、前記逆止弁の弁座より下方に延びて設けられ、
前記逆流水防止板の下方に、水源側からの水が前記ケーシング吸込口側へ流れる隙間が形成されていることを特徴とするポンプ装置。 A pump device in which an impeller connected to an electric motor is housed in a casing,
A casing suction port and a casing discharge port provided in the casing;
a suction passage provided in an upper portion of the casing for sucking water from a water source;
a water-steam separation chamber provided in an upper portion of the casing and communicating with the casing discharge port;
A check valve provided between a water source and the casing suction port;
a backflow prevention plate provided so as to protrude downward from a ceiling wall of a horizontal passage between the check valve and the casing suction port;
having
The backflow prevention plate is provided extending downward from the valve seat of the check valve,
A pump device characterized in that a gap is formed below the backflow prevention plate, through which water from the water source flows toward the casing suction port. 請求項１記載のポンプ装置であって、
前記逆流水防止板は、曲面形状である、ポンプ装置。 2. The pump device according to claim 1,
A pump device, wherein the backflow prevention plate has a curved shape. 請求項１又は請求項２に記載のポンプ装置であって、
前記気水分離室に上下方向に延びる主板と、前記主板に前記ケーシング吐出口まで伸びる分流板とを設けた自吸板を有することを特徴とする、ポンプ装置。 The pump device according to claim 1 or 2,
A pump device comprising: a self-priming plate having a main plate extending vertically in said water-air separation chamber; and a flow dividing plate extending from said main plate to said casing discharge port.
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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003313921A (en) 2002-04-23 2003-11-06 Matsushita Electric Works Ltd Bidet
JP2018178855A (en) 2017-04-13 2018-11-15 日立アプライアンス株式会社 Pump device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58126498A (en) * 1982-01-21 1983-07-27 Matsushita Electric Ind Co Ltd Electric well pump

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003313921A (en) 2002-04-23 2003-11-06 Matsushita Electric Works Ltd Bidet
JP2018178855A (en) 2017-04-13 2018-11-15 日立アプライアンス株式会社 Pump device

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