JP4386951B2 - Self-priming pump device - Google Patents
Self-priming pump device Download PDFInfo
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- JP4386951B2 JP4386951B2 JP2008111089A JP2008111089A JP4386951B2 JP 4386951 B2 JP4386951 B2 JP 4386951B2 JP 2008111089 A JP2008111089 A JP 2008111089A JP 2008111089 A JP2008111089 A JP 2008111089A JP 4386951 B2 JP4386951 B2 JP 4386951B2
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Description
本発明は、家庭用の全自動洗濯機及び洗濯乾燥機などの洗濯機に搭載して風呂の残り湯などを吸水するのに好適な自吸式ポンプ装置に関するものである。 The present invention relates to a self-priming pump device suitable for being mounted on a washing machine such as a fully automatic washing machine and a washing / drying machine for home use to absorb remaining hot water in a bath.
従来、家庭用の全自動洗濯機及び洗濯乾燥機などの洗濯機では、主に節水を目的として風呂水等を洗濯水として利用するため自吸式ポンプ装置を搭載している。この自吸式ポンプ装置としては、吸込口用筒体とポンプランナー収納室とを連結した中継パイプを気水分離室の中央近傍を貫くように配置し、ポンプランナーを囲繞してポンプランナー収納室を形成し、かつポンプランナーの回転遠心力によりポンプランナーの外方へ押しやられる流体をポンプランナー収納室から気水分離室へ吐出させる吐出開口を有する水案内壁部を備え、この吐出開口から吐出した流体の流れが、中継パイプとポンプケーシング本体内側壁の間を通過し、中継パイプの周囲を旋回するようにすることで、気水分離室内を貫く中継パイプを、流体の流れを形の良い縦渦とする案内部材とした構成のものが知られている(例えば、特許文献1)。 Conventionally, a washing machine such as a fully automatic washing machine and a washing / drying machine for home use is equipped with a self-priming pump device for using bath water or the like as washing water mainly for the purpose of saving water. As this self-priming pump device, a relay pipe connecting the suction cylinder and the pump runner storage chamber is arranged so as to penetrate the vicinity of the center of the air-water separation chamber, and the pump runner storage chamber is surrounded by the pump runner. And a water guide wall having a discharge opening for discharging the fluid pushed to the outside of the pump runner by the rotational centrifugal force of the pump runner from the pump runner storage chamber to the steam-water separation chamber. The fluid flow passes between the relay pipe and the inner wall of the pump casing body and swirls around the relay pipe, so that the fluid flow is good for the relay pipe penetrating the steam-water separation chamber. The thing of the structure used as the guide member made into a vertical vortex is known (for example, patent document 1).
しかしながら、上記特開2001−90685号公報に記載された自吸式ポンプ装置の構成では、ポンプランナーの回転によって、水案内壁部の吐出開口から気水分離室側に吐出させた流体の流れが、ポンプケーシング本体内を旋回しながらゆっくりと上昇する縦渦となるため、その流体の流速の変化が生じ難い状態となり、気水分離が効率よく行われないという問題があった。 However, in the configuration of the self-priming pump device described in JP-A-2001-90685, the flow of the fluid discharged from the discharge opening of the water guide wall to the steam-water separation chamber is caused by the rotation of the pump runner. Since it becomes a vertical vortex that slowly rises while turning in the pump casing body, there is a problem that the flow rate of the fluid hardly changes, and the steam-water separation is not performed efficiently.
さらに、上記特開2001−90685号公報に記載された自吸式ポンプ装置では、流体の流れを形の良い縦渦とする案内部材となるところの気水分離室内を貫く中継パイプを、吸込口用筒体に接続するストレート部、このストレート部の下端から直角に湾曲した湾曲部を有するL字状パイプ部、及びこのL字状パイプ部の湾曲部の開放部分を取り囲むように形成された逆流防止部からなる第1パイプ部材と、ポンプランナー収納室の下面を構成する平坦面、この平坦面のごく一部を利用して形成するL字状パイプ部、及び第1パイプ部材との接続部とからなる第2パイプ部材とから構成するという複雑な構成としているため、製作性が悪いという問題があった。 Furthermore, in the self-priming pump device described in the above-mentioned Japanese Patent Application Laid-Open No. 2001-90685, a relay pipe penetrating the air-water separation chamber serving as a guide member that makes the flow of fluid a good vertical vortex is provided with a suction port. A straight portion connected to the cylinder, an L-shaped pipe portion having a curved portion bent at a right angle from the lower end of the straight portion, and a backflow formed so as to surround an open portion of the curved portion of the L-shaped pipe portion The first pipe member comprising the prevention portion, the flat surface constituting the lower surface of the pump runner storage chamber, the L-shaped pipe portion formed by utilizing a small part of the flat surface, and the connecting portion with the first pipe member There is a problem that the manufacturability is poor because the second pipe member is made of a complicated structure.
本発明は、上記背景技術の現状を鑑みてなされたもので、その主たる目的は、気水分離を効率よく行わせることのできる製作性に優れた自吸式ポンプ装置を提供することにある。 The present invention has been made in view of the above-mentioned background art, and a main object of the present invention is to provide a self-priming pump device excellent in manufacturability capable of efficiently performing air-water separation.
本発明の他の目的は、気水分離を効率よく行わせることができるとともに、仕切り体の吐出開口から吐出する流体の流れの方向を上方に変える方向変更壁体の製作性が優れた自吸式ポンプ装置を提供することにある。 Another object of the present invention is to enable air-water separation to be performed efficiently and to produce a direction-changing wall body that changes the flow direction of the fluid discharged from the discharge opening of the partition upward. It is providing a type | formula pump apparatus.
さらに本発明の他の目的は、気水分離を効率よく行わせることができるとともに、仕切り体の吐出開口から気水分離室側に吐出させた流体に含まれる空気が戻し水口からポンプランナー収納室内に流入するのを抑止できる自吸式ポンプ装置を提供することにある。 Furthermore, another object of the present invention is to enable air / water separation to be performed efficiently, and the air contained in the fluid discharged from the discharge opening of the partition to the air / water separation chamber side is returned from the return water port to the pump runner storage chamber. An object of the present invention is to provide a self-priming pump device that can suppress the inflow into the pump.
内部が気水分離室と駆動モータ収納室とに左右に仕切られて前記気水分離室の上部に内部に流体を吸い込ませるための吸込口用筒体及び内部に吸い込まれた流体を外部に吐出させる吐出口用筒体を設けたポンプケーシング本体と、このポンプケーシング本体の底部開口を封止するベースカバーと、前記駆動モータ収納室に収納された駆動モータとを備え、前記駆動モータ収納室の下方に位置して前記ポンプケーシング本体と前記ベースカバーとの間に、前記駆動モータの回転軸に連結したポンプランナーが収納されるポンプランナー収納室を形成し、このポンプランナー収納室と前記吸込口用筒体を吸込水通路及び吸込室を介して連通してなるとともに、前記吸込水通路を、前記気水分離室内を貫き前記ベースカバー内底に向って延在する細長筒状体を含む構成とし、かつ、前記吸込室から前記吸込水通路側への流体の逆流を阻止する逆流防止弁を設け、しかも、前記ポンプランナー収納室から前記気水分離室側に吐出した流体が、前記気水分離室内で前記細長筒状体の周囲に沿って旋回するのを阻止する旋回阻止体を前記気水分離室内に設けるとともに、前記ポンプランナーの回転遠心力により前記ポンプランナーの外方に押しやられた流体を前記ポンプランナー収納室から前記気水分離室側に吐出させる吐出開口を有する渦巻き形状の水案内壁部と前記逆流防止弁を収納する袋状部とを一体的に成形して形成した仕切り体を、前記ポンプケーシング本体の外底部と立ち上がり外周壁部との間で挟持することで、前記吸込室を形成する自吸式ポンプ装置において、
前記仕切り体の吐出開口から吐出する流体の流れの方向を上方に変える方向変更壁体と、吐出開口の前方に一体的に成形して形成した仕切り体を、前記ポンプケーシング本体の外底部とベースカバーに一体的に成形して形成した立ち上がり外周壁との間で挟持することで前記吸込室を形成することを特徴とするものである。
The inside of the air / water separation chamber and the drive motor storage chamber are divided into right and left to discharge the fluid sucked into the suction cylinder and the cylinder for suction into the upper portion of the air / water separation chamber. A pump casing main body provided with a discharge port cylinder, a base cover for sealing a bottom opening of the pump casing main body, and a drive motor stored in the drive motor storage chamber. A pump runner storage chamber is formed between the pump casing main body and the base cover, which is positioned below and accommodates a pump runner connected to the rotation shaft of the drive motor. The pump runner storage chamber and the suction port The tubular body communicates via a suction water passage and a suction chamber, and the suction water passage extends through the air / water separation chamber toward the inner bottom of the base cover. Provided with a configuration including a cylindrical body, and provided with a backflow prevention valve for preventing a backflow of fluid from the suction chamber to the suction water passage side, and discharged from the pump runner storage chamber to the air / water separation chamber side A swirl prevention body is provided in the steam-water separation chamber for preventing fluid from swirling along the periphery of the elongated cylindrical body in the steam-water separation chamber, and the pump runner is rotated by a centrifugal force of the pump runner. A spiral water guide wall portion having a discharge opening for discharging fluid pushed outward from the pump runner storage chamber to the air / water separation chamber side and a bag-shaped portion storing the backflow prevention valve are integrated. In the self-priming pump device that forms the suction chamber by sandwiching the formed partition body between the outer bottom portion of the pump casing body and the rising outer peripheral wall portion,
A direction-changing wall that changes the flow direction of the fluid discharged from the discharge opening of the partition body upward, and a partition body that is integrally formed in front of the discharge opening are formed on the outer bottom and base of the pump casing body. The suction chamber is formed by being sandwiched between a rising outer peripheral wall formed integrally with a cover .
さらに、本発明の他の目的を達成するために、前記仕切り体の吐出開口から吐出する流体を前記気水分離室側に向って案内する流体案内壁面を、前記仕切り体の吐出開口に連なるところの前記仕切り体の外周壁に一体形成するとともに、その流体案内壁面の終端部分に、前記方向変更壁体を一体形成し、かつ、前記方向変更壁体を、前記仕切り体の吐出開口から吐出した流体が前記方向変更壁体に衝突した後、その流体が略直角に上昇するように板状としたことを特徴としている。 Furthermore, in order to achieve another object of the present invention, a fluid guide wall surface that guides the fluid discharged from the discharge opening of the partition toward the gas-water separation chamber side is connected to the discharge opening of the partition. Are formed integrally with the outer peripheral wall of the partition body, and the direction changing wall body is integrally formed at the end portion of the fluid guide wall surface, and the direction changing wall body is discharged from the discharge opening of the partition body. After the fluid collides with the direction changing wall body, it is characterized in that it is plate-shaped so that the fluid rises substantially at a right angle.
さらに、本発明の他の目的を達成するために、前記ポンプランナー収納室から前記気水分離室側に吐出した流体を、前記ポンプランナー収納室の水案内壁部及び前記吸込室の外周壁となる立ち上がり外周壁部の外周を循環させて前記気水分離室側に戻すための循環通路を、前記立ち上がり外周壁部及び前記水案内壁部と前記ベースカバー内側壁との間に形成し、かつ、前記循環通路を循環する前記流体を前記ポンプランナー収納室内に戻すための戻し水口を設け、この戻し水口と前記方向変更壁体の位置関係を、ポンプランナーの筒状軸部の中心にして略対向するように設定したことを特徴としている。 Furthermore, in order to achieve another object of the present invention, the fluid discharged from the pump runner storage chamber to the air / water separation chamber side is divided into a water guide wall portion of the pump runner storage chamber and an outer peripheral wall of the suction chamber. A circulation passage for circulating the outer periphery of the rising outer peripheral wall portion and returning it to the side of the steam / water separation chamber is formed between the rising outer peripheral wall portion and the water guide wall portion and the inner wall of the base cover, and A return water port is provided for returning the fluid circulating through the circulation passage into the pump runner storage chamber, and the positional relationship between the return water port and the direction changing wall body is approximately centered on the cylindrical shaft portion of the pump runner. It is characterized by being set to face each other.
本発明によれば、仕切り体の吐出開口から吐出する流体の流れの方向を上方に変える方向変更壁体が、仕切り体の吐出開口の前方に設けられているので、仕切り体の吐出開口から気水分離室側に吐出した流体(呼び水)が、自吸運転時、直ぐに方向変更壁体に衝突した後、その流体の流れ方向を水平方向から垂直方向(上方方向)に変えられるため、その流体の流速が急速に低下し、しかも、流体の流れ方向が水平方向から垂直方向(上方方向)に変えられた後、気水分離室側に吐出した流体が旋回阻止体の周囲を旋回することがないので、ポン仕切り体の吐出開口から気水分離室側に吐出した流体に含まれている空気が、ポンプケーシング本体内の上方に向かって円滑に移動するため、仕切り体の吐出開口より気水分離室側に吐出した流体に含まれている空気の気水分離が効率よく行われて、ポンプケーシング本体の吐出口用筒体からはポンプ仕切り体の吐出開口から気水分離室側に吐出した流体をほとんど流出させることなく、かつ仕切り体の吐出開口より気水分離室側に吐出した流体に含まれる空気を、ポンプケーシング本体の吐出口筒体から効率よく排出させることができ、気水分離性能の優れた自吸式ポンプ装置が得られる。 According to the present invention, the direction changing wall body that changes the flow direction of the fluid discharged from the discharge opening of the partitioning body to the upper side is provided in front of the discharge opening of the partitioning body. Since the fluid (priming water) discharged to the water separation chamber immediately collides with the direction changing wall during self-priming operation, the flow direction of the fluid can be changed from the horizontal direction to the vertical direction (upward direction). In addition, after the fluid flow direction is changed from the horizontal direction to the vertical direction (upward direction), the fluid discharged to the steam-water separation chamber may swirl around the swirl prevention body. Therefore, the air contained in the fluid discharged from the outlet opening of the pump partition to the side of the steam / water separation chamber moves smoothly upward in the pump casing body. Fluid discharged to the separation chamber side The air-water separation of the contained air is efficiently performed, and the fluid discharged from the discharge opening of the pump partition body to the air-water separation chamber side is hardly discharged from the discharge port cylinder of the pump casing body, The air contained in the fluid discharged to the air / water separation chamber side from the discharge opening of the partition body can be efficiently discharged from the discharge port cylinder of the pump casing body, and the self-priming pump has excellent air / water separation performance. A device is obtained.
さらに、他の本発明によれば、仕切り体の吐出開口から吐出する流体を気水分離室側に向って案内する流体案内壁面を、仕切り体の吐出開口に連なるところの前記仕切り体の外周壁に一体形成するとともに、その案内壁の終端部分に方向変更壁体を一体形成することで、その方向変更壁体を、仕切り体を成形時に一体成形することができるため、製作性に優れた自吸式ポンプ装置が得られる。 Further, according to another aspect of the present invention, a fluid guide wall surface that guides the fluid discharged from the discharge opening of the partition toward the air-water separation chamber side, and the outer peripheral wall of the partition that is continuous with the discharge opening of the partition Since the direction change wall body can be integrally formed at the time of molding the partition wall body by forming the direction change wall body integrally with the end portion of the guide wall. A suction pump device is obtained.
さらに、他の本発明によれば、仕切り体の吐出開口から気水分離室側に吐出した流体をポンプランナー収納室の水案内壁部及び吸込室の外周壁となる立ち上がり外周壁部の外周を循環させて気水分離室側に戻すための循環通路を、立ち上がり外周壁部及び水案内壁部とベースカバー内側壁との間に形成して、その循環通路を循環する流体をポンプランナー収納室内に戻すための戻し水口を、その循環通路に設ける構成としても、戻し水口と方向変更壁体と位置関係が、ポンプランナーの筒状軸部を中心にして略対向するように設定することで、気水分離室側及び仕切り体の吐出開口部分の両方から最も離れた位置に戻し水口が設けられるようになるため、仕切り体の吐出開口から気水分離室側に吐出した流体中に含まれている空気が、戻し水孔からポンプランナー収納室に再び戻されるのを抑止できるので、自吸性能の低下を防止できる自吸式ポンプ装置が得られる。 Furthermore, according to another aspect of the present invention, the fluid discharged from the discharge opening of the partition to the side of the air / water separation chamber is disposed on the outer periphery of the rising outer peripheral wall portion which becomes the water guide wall portion of the pump runner storage chamber and the outer peripheral wall of the suction chamber. A circulation passage for circulating and returning to the steam / water separation chamber side is formed between the rising outer peripheral wall portion and the water guide wall portion and the inner wall of the base cover, and the fluid circulating in the circulation passage is supplied to the pump runner storage chamber. Even if the return water port for returning to the configuration is provided in the circulation passage, the positional relationship between the return water port and the direction changing wall body is set so as to be substantially opposed centering on the cylindrical shaft portion of the pump runner, Since the return water port is provided at the position farthest from both the steam-water separation chamber side and the discharge opening portion of the partition body, it is included in the fluid discharged from the partition opening to the steam-water separation chamber side. The air that has returned water Since can be prevented from being again returned to Pont planner housing chamber from self-priming pump device is obtained which can prevent a decrease in self-priming performance.
以下、本発明の実施形態を、図1〜図25に基づき、詳説する。
図1は、本発明の一実施形態に係わる自吸式ポンプ装置の要部縦断面図である。
図2は、本発明の一実施形態に係わる自吸式ポンプ装置全体の分解斜視図である。
図3は、本発明の一実施形態に係わる自吸式ポンプ装置の外観斜視図である。
図4は、本発明の一実施形態に係わる自吸式ポンプ装置の側面図である。
図5は、図4のA―A断面図である。
図6は、本発明の一実施形態に係わる自吸式ポンプ装置における仕切り体及びベースカバーの分解斜視図である。
図7は、本発明の一実施形態に係わる自吸式ポンプ装置のベースカバーの正面図である。
図8は、本発明の一実施形態に係わる自吸式ポンプ装置のベースカバーの上面図である。
図9は、本発明の一実施形態に係わる自吸式ポンプ装置のベースカバーの下面図である。
図10は、本発明の一実施形態に係わる自吸式ポンプ装置のベースカバーの右面図である。
図11は、本発明の一実施形態に係わる自吸式ポンプ装置のベースカバーの左面図である。
図12は、本発明の一実施形態に係わる自吸式ポンプ装置の仕切り体の上面図である。
図13は、図12のB―B断面図である。
図14は、本発明の一実施形態に係わる自吸式ポンプ装置の仕切り体の下面図である。
図15は、本発明の一実施形態に係わる自吸式ポンプ装置の仕切り体の左側面図である。
図16は、本発明の一実施形態に係わる自吸式ポンプ装置の正面縮小図である。
図17は、本発明の一実施形態に係わる自吸式ポンプ装置の上面縮小図である。
図18は、本発明の一実施形態に係わる自吸式ポンプ装置の左側面縮小図である。
図19は、本発明の一実施形態に係わる自吸式ポンプ装置の背面縮小図である。
図20は、本発明の一実施形態に係わる自吸式ポンプ装置の下面縮小図である。
図21は、本発明の一実施形態に係わる自吸式ポンプ装置の逆流防止弁の上面図拡大である。
図22は、図21のC−C断面図である。
図23は、図21のD−D断面図である。
図24は、本発明の一実施形態に係わる自吸式ポンプ装置におけるポンプケーシング本体の要部横断面図である。
図25は、本発明の一実施形態に係わる自吸式ポンプ装置におけるポンプケーシング本体の要部縦断面図である。
Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS.
FIG. 1 is a longitudinal sectional view of an essential part of a self-priming pump device according to an embodiment of the present invention.
FIG. 2 is an exploded perspective view of the entire self-priming pump device according to one embodiment of the present invention.
FIG. 3 is an external perspective view of the self-priming pump device according to one embodiment of the present invention.
FIG. 4 is a side view of the self-priming pump device according to one embodiment of the present invention.
5 is a cross-sectional view taken along the line AA in FIG.
FIG. 6 is an exploded perspective view of the partition body and the base cover in the self-priming pump device according to the embodiment of the present invention.
FIG. 7 is a front view of the base cover of the self-priming pump device according to the embodiment of the present invention.
FIG. 8 is a top view of the base cover of the self-priming pump device according to the embodiment of the present invention.
FIG. 9 is a bottom view of the base cover of the self-priming pump device according to the embodiment of the present invention.
FIG. 10 is a right side view of the base cover of the self-priming pump device according to the embodiment of the present invention.
FIG. 11 is a left side view of the base cover of the self-priming pump device according to the embodiment of the present invention.
FIG. 12 is a top view of the partition of the self-priming pump device according to the embodiment of the present invention.
13 is a cross-sectional view taken along the line BB in FIG.
FIG. 14 is a bottom view of the partition of the self-priming pump device according to the embodiment of the present invention.
FIG. 15 is a left side view of the partition body of the self-priming pump device according to the embodiment of the present invention.
FIG. 16 is a front reduced view of the self-priming pump device according to one embodiment of the present invention.
FIG. 17 is a reduced top view of the self-priming pump device according to one embodiment of the present invention.
FIG. 18 is a left side reduced view of the self-priming pump device according to one embodiment of the present invention.
FIG. 19 is a rear view of the self-priming pump device according to the embodiment of the present invention.
FIG. 20 is a bottom view of the self-priming pump device according to the embodiment of the present invention.
FIG. 21 is an enlarged top view of the backflow prevention valve of the self-priming pump device according to one embodiment of the present invention.
22 is a cross-sectional view taken along the line CC of FIG.
23 is a cross-sectional view taken along the line DD of FIG.
FIG. 24 is a cross-sectional view of the main part of the pump casing body in the self-priming pump device according to one embodiment of the present invention.
FIG. 25 is a longitudinal sectional view of a main part of a pump casing body in the self-priming pump device according to one embodiment of the present invention.
図1〜図25に示す本発明の一実施形態に係わる自吸式ポンプ装置1は、内部が気水分離室2Aと駆動モータ収納室2Bとに左右に仕切られて気水分離室2Aの上部に内部に流体を吸い込ませるための吸込口用筒体2C及び内部に吸い込まれた流体を外部に吐出させる吐出口用筒体2Dを設けたポンプケーシング本体2と、このポンプケーシング本体2の底部開口2Qの全体を封止する深皿状のベースカバー3と、駆動モータ収納室2Bに収納された駆動モータ4とを備え、駆動モータ収納室2Bの下方に位置してポンプケーシング本体2の外底部2Eとベースカバー3の内底との間に、駆動モータ4の回転軸4Aに連結した合成樹脂からなるクローズブレードタイプのポンプランナー5が収納されるポンプランナー収納室6を形成して、このポンプランナー収納室6と吸込口用筒体2Cを吸込水通路7及び吸込室8を介して連通してなるとともに、吸込水通路7を、気水分離室2A内を貫きベースカバー3内底に向って延在する細長筒状体9を含む構成とし、かつ吸込室8から吸込水通路7側への流体の逆流を阻止する逆流防止弁10を設ける構成としてある。 The self-priming pump device 1 according to one embodiment of the present invention shown in FIGS. 1 to 25 is divided into a steam / water separation chamber 2A and a drive motor storage chamber 2B in the left and right, and the upper part of the steam / water separation chamber 2A. A pump casing body 2 provided with a suction port cylinder 2C for sucking fluid into the interior and a discharge port cylinder 2D for discharging fluid sucked into the interior; and a bottom opening of the pump casing body 2 2Q includes a base plate 3 having a deep dish shape and a drive motor 4 housed in the drive motor storage chamber 2B, and is located below the drive motor storage chamber 2B and is located on the outer bottom of the pump casing body 2 A pump runner storage chamber 6 in which a closed blade type pump runner 5 made of a synthetic resin connected to the rotating shaft 4A of the drive motor 4 is stored is formed between 2E and the inner bottom of the base cover 3. The pump runner storage chamber 6 and the suction port cylinder 2C communicate with each other through the suction water passage 7 and the suction chamber 8, and the suction water passage 7 passes through the air / water separation chamber 2A to the inner bottom of the base cover 3. A configuration including the elongated cylindrical body 9 extending in the direction and a configuration of providing a backflow prevention valve 10 for preventing the backflow of fluid from the suction chamber 8 toward the suction water passage 7 side.
吸込口用筒体2Cは、ポンプケーシング本体2の上面に設けられている。吐出口用筒体2Dは、ポンプケーシング本体2の上部側面に設けられている。また、気水分離室2A内の細長筒状体9は、駆動モータ収納室2B側から離れる方向にずらしてある。すなわち、細長筒状体9が気水分離室2の縦長方向の中心よりも駆動モータ収納室2B側から離れる方向にずらしてある。本実施形態例では、細長筒状体9の駆動モータ収納室2B側の外側面が、気水分離室2の縦長方向の中心に略一致するように、細長筒状体9を駆動モータ収納室2B側から離れる方向にずらしてある(図24及び図25を参照)。 The suction port cylinder 2 </ b> C is provided on the upper surface of the pump casing body 2. The discharge port cylinder 2 </ b> D is provided on the upper side surface of the pump casing body 2. Further, the elongated cylindrical body 9 in the steam-water separation chamber 2A is shifted in a direction away from the drive motor storage chamber 2B side. That is, the elongated cylindrical body 9 is shifted in the direction away from the drive motor storage chamber 2 </ b> B side from the center in the longitudinal direction of the steam / water separation chamber 2. In the present embodiment, the elongated cylindrical body 9 is placed in the drive motor storage chamber so that the outer surface of the elongated cylindrical body 9 on the drive motor storage chamber 2B side substantially coincides with the center in the longitudinal direction of the steam / water separation chamber 2. It is shifted in a direction away from the 2B side (see FIGS. 24 and 25).
ポンプケーシング本体2は、合成樹脂製とし、外郭形状を縦長の略箱状としてある。ポンプケーシング本体2の駆動モータ収納室2Bの底部分には、図1に示すように、駆動モータ4を支えるために上方に向って突出させた形状とした支え筒部2Fと駆動モータ支えリブ2Rが設けられている(図24及び図25を参照)。支え筒部2Fの中央部には、駆動モータ4の回転軸4Aを挿入するための回転軸挿入開口2Sが設けられている。支え筒部2Fの外方に位置するところのポンプケーシング本体2の側面には、水抜き孔2Gが設けられている。駆動モータ4の回転軸4Aを支え筒部2Fの中央から下方に突出させ、その回転軸4Aにポンプランナー5の筒状軸部5Aを圧入することで、ポンプランナー5の筒状軸部5Aが駆動モータ4の回転軸4Aに取り付けられる。 The pump casing body 2 is made of synthetic resin, and has an outer shape of a vertically long and substantially box shape. As shown in FIG. 1, a support cylinder portion 2 </ b> F and a drive motor support rib 2 </ b> R are formed on the bottom portion of the drive motor storage chamber 2 </ b> B of the pump casing body 2 so as to protrude upward to support the drive motor 4. (See FIGS. 24 and 25). A rotation shaft insertion opening 2 </ b> S for inserting the rotation shaft 4 </ b> A of the drive motor 4 is provided at the center of the support cylinder portion 2 </ b> F. A drain hole 2G is provided on the side surface of the pump casing body 2 located outside the support cylinder portion 2F. The rotating shaft 4A of the drive motor 4 is protruded downward from the center of the supporting cylinder portion 2F, and the cylindrical shaft portion 5A of the pump runner 5 is press-fitted into the rotating shaft 4A so that the cylindrical shaft portion 5A of the pump runner 5 is Attached to the rotating shaft 4 </ b> A of the drive motor 4.
ポンプランナー5の筒状軸部5Aと支え筒部2Fの内側壁との間には、図1に示すように、円盤状のシール部材(オイルシール)11が設けられている。この円盤状のシール部材11によって、ポンプランナー5が収納されるポンプランナー収納室6内から流体が支え筒部2F側に浸入するのを阻止している。ポンプケーシング本体2の上部側面には、気水分離室2A内、ポンプランナー収納室6内及び吸込室8内に呼び水を注入するための呼び水口用筒体2Hが設けられている。支え筒部2Fの内側壁には、円盤状のシール部材11の位置決めの機能を果たす複数個の位置決めリブ2Kが設けられている。水抜き孔2Gは、シール部材(オイルシール)11が損傷することで、万一、ポンプランナー収納室6内から流体が支え筒部2F側に浸入してきた場合に、その流体をポンプケーシング本体2の外に流出させるものである。ポンプケーシング本体2は、駆動モータ収納室2B、吸込口用筒体2C及び細長筒状体9を成形するための上型と、気水分離室2A、後述する旋回阻止体15の第1塞ぎ体15A及び支え筒部2Fを成形するための下型と、吐出口用筒体2D及び呼び水口用筒体2Hを成形するための右側方型と、水抜き孔2Gを成形するための右側方型によって、型抜きすることで、成形することができる。 As shown in FIG. 1, a disc-shaped seal member (oil seal) 11 is provided between the cylindrical shaft portion 5A of the pump runner 5 and the inner wall of the support cylinder portion 2F. The disc-shaped seal member 11 prevents fluid from entering the support tube portion 2F from the pump runner storage chamber 6 in which the pump runner 5 is stored. On the upper side surface of the pump casing main body 2, a priming port cylinder 2 </ b> H for injecting priming water into the air / water separation chamber 2 </ b> A, the pump runner storage chamber 6, and the suction chamber 8 is provided. A plurality of positioning ribs 2K that perform the positioning function of the disc-shaped seal member 11 are provided on the inner wall of the support cylinder portion 2F. The drain hole 2G is damaged by the seal member (oil seal) 11, so that in the unlikely event that the fluid enters the supporting cylinder portion 2F from the pump runner storage chamber 6, the fluid is supplied to the pump casing body 2. It is intended to flow outside. The pump casing body 2 includes a drive motor storage chamber 2B, a suction port cylinder 2C, and an upper cylinder for molding the elongated cylindrical body 9, an air / water separation chamber 2A, and a first closing body for a swirl prevention body 15 to be described later. A lower mold for forming 15A and the support cylinder portion 2F, a right side mold for forming the discharge port cylinder 2D and the priming port cylinder 2H, and a right side mold for forming the drain hole 2G Thus, it can be molded by die cutting.
ポンプケーシング本体2の駆動モータ収納室2Bの上端開口2Jは、この上端開口2Jから駆動モータ収納室2Bに駆動モータ4に挿入設置した後、合成樹脂製のモータキャップ12で蔽うようにしてある。モータキャップ12は、駆動モータ4の軸方向のがたつきを抑える機能を有している。駆動モータ4の電気的接続体13は、モータキャップ12の引出開口12Aからポンプケーシング本体2及びモータキャップ12の外方に突出させてある。吸込口用筒体2Cは、ポンプケーシング本体2に取り付けられたモータキャップ12の上面よりも上方に突出させることで、揚水用の可撓性のある吸水ホース(図示せず)の脱着作業がしやすいようにしてある。モータキャップ12の外側壁には、ポンプケーシング本体2の外周上部に設けた2個の嵌合穴部2Pに着脱可能に嵌め込まれところの2個の係止片12Bが設けられている。 The upper end opening 2J of the drive motor storage chamber 2B of the pump casing body 2 is inserted and installed in the drive motor 4 from the upper end opening 2J into the drive motor storage chamber 2B, and then covered with a motor cap 12 made of synthetic resin. The motor cap 12 has a function of suppressing shakiness in the axial direction of the drive motor 4. The electrical connection body 13 of the drive motor 4 is protruded outward from the pump casing body 2 and the motor cap 12 through the drawing opening 12 </ b> A of the motor cap 12. The suction port cylinder 2C protrudes upward from the upper surface of the motor cap 12 attached to the pump casing body 2, thereby removing and attaching a flexible water suction hose (not shown) for pumping water. Easy to use. On the outer wall of the motor cap 12, there are provided two locking pieces 12B that are detachably fitted into two fitting holes 2P provided on the upper outer periphery of the pump casing body 2.
深皿状のベースカバー3は、合成樹脂製とし、そのベースカバー3内には、図1及び図6に示すように、細長筒状体9の下端側が連結嵌合される吸込水通路用連結筒体3Aと、この吸込水通路用連結筒体3Aに隣接して設けられる横架平板部3Kと、この横架平板部3Kに設けられるところの吸込水通路用連結筒体3Aに連通したリング状の水平弁座部3Bと、この水平弁座部3Bに隣接して横架平板部3Kに設けられるところの逆流防止弁10を取り付けるための逆流防止弁用取り付け凹部3Cと、吸込水通路用連結筒体3Aから水平弁座部3Bまでの連通路3Hと、吸込室8の外周壁となる立ち上がり外周壁部3Dと、後述する旋回阻止体15の第2塞ぎ体15Bとが形成されている。 The deep-plate-shaped base cover 3 is made of synthetic resin, and in the base cover 3, as shown in FIGS. 1 and 6, a suction water passage connection in which the lower end side of the elongated cylindrical body 9 is connected and fitted. 3 A of cylinders, horizontal plate part 3K provided adjacent to this suction water passage connection cylinder 3A, and a ring communicating with the suction water channel connection cylinder 3A provided on this horizontal plate part 3K -Shaped horizontal valve seat portion 3B, a backflow prevention valve mounting recess 3C for attaching a backflow prevention valve 10 provided on the horizontal plate portion 3K adjacent to the horizontal valve seat portion 3B, and a suction water passage A communication passage 3H from the connecting cylinder 3A to the horizontal valve seat portion 3B, a rising outer peripheral wall portion 3D serving as an outer peripheral wall of the suction chamber 8, and a second closing member 15B of the swirl prevention member 15 described later are formed. .
立ち上がり外周壁部3Dは、図6及び図8に示すように、水平弁座部3Bと吸込水通路用連結筒体3Aとの間に設けられる第1仕切り壁3D−1と、この仕切り壁に連なって左右に設けた第2仕切り壁3D−2及び第3仕切り壁3D−3と、この第2仕切り壁3D−2及び第3仕切り壁3D−3に連なる第4仕切り壁3D−4とからなり、第1仕切り壁3D−1、第2仕切り壁3D−2及び第3仕切り壁3D−3をベースカバー3の内壁に対して平行となる直線形状とし、かつ第4仕切り壁3D−4を湾曲形状としてある。第1仕切り壁3D−1は、横架平板部3K上に一体的に形成されている。第2仕切り壁3D−2、第3仕切り壁3D−3及び第4仕切り壁3D−4は、ベースカバー3の内底に一体的に形成されている。また、細長筒状体9の水通路断面積をS1、連通路3Hの水通路断面積をS2、水平弁座部3Bの開口面積をS3、連絡開口Gの開口面積をS4、流入開口14Dの開口面積をS5とした場合に、S1<S2<S3<S4<S5となるように設定することで、吸込水通路7及び吸込室8を通る流体の流量が減少しないようにしてある。本実施形態では、連通路3Hの水通路断面積S2を、細長筒状体9の水通路断面積S1の1.04倍となるように設定してある。 As shown in FIGS. 6 and 8, the rising outer peripheral wall portion 3D includes a first partition wall 3D-1 provided between the horizontal valve seat portion 3B and the suction water passage connecting cylinder 3A, and the partition wall. From the second partition wall 3D-2 and the third partition wall 3D-3 that are provided on the left and right sides, and the fourth partition wall 3D-4 that is connected to the second partition wall 3D-2 and the third partition wall 3D-3. The first partition wall 3D-1, the second partition wall 3D-2, and the third partition wall 3D-3 are in a linear shape parallel to the inner wall of the base cover 3, and the fourth partition wall 3D-4 is It has a curved shape. The first partition wall 3D-1 is integrally formed on the horizontal flat plate portion 3K. The second partition wall 3D-2, the third partition wall 3D-3, and the fourth partition wall 3D-4 are integrally formed on the inner bottom of the base cover 3. Further, the water passage cross-sectional area of the elongated cylindrical body 9 is S1, the water passage cross-sectional area of the communication passage 3H is S2, the opening area of the horizontal valve seat 3B is S3, the opening area of the communication opening G is S4, and the inflow opening 14D. When the opening area is S5, the flow rate of the fluid passing through the suction water passage 7 and the suction chamber 8 is not reduced by setting S1 <S2 <S3 <S4 <S5. In the present embodiment, the water passage sectional area S2 of the communication passage 3H is set to be 1.04 times the water passage sectional area S1 of the elongated tubular body 9.
逆流防止弁10は、ゴム製であって、図6に示すように、円盤状の弁体部10Aと、この弁体部10Aに一体的に形成された取り付け片部10Bとからなっている。逆流防止弁10は、弁体部10Aの下面側の平坦面10Eが水平となるように、ベースカバー3の逆流防止弁用取り付け凹部3Cに保持させるとともに、弁体部10Aが上下方向に開閉可能な構造としてある。逆流防止弁10は、ポンプランナー5の回転時には、弁体部10Aが上方に回動することで水平弁座部3Bから離れることが可能となる重量に設定されとともに、ポンプランナー5の回転停止時には、逆流防止弁10の弁体部10Aの重量で、その弁体部10Aが下方に回動して水平弁座部3Bに押圧させることにより、吸込室8から吸込水通路7側への流体の逆流を阻止するようにしてある。逆流防止弁10の詳細構造を図21から図23に示す。逆流防止弁10の弁体部10Aの上面には、逆流防止弁10の成形時のヒケ対策にための、円形の中央凹部10Cとリング溝10Dが設けられている。 The backflow prevention valve 10 is made of rubber and includes a disc-like valve body portion 10A and an attachment piece portion 10B formed integrally with the valve body portion 10A as shown in FIG. The backflow prevention valve 10 is held in the backflow prevention valve mounting recess 3C of the base cover 3 so that the flat surface 10E on the lower surface side of the valve body portion 10A is horizontal, and the valve body portion 10A can be opened and closed vertically. As a structure. The backflow prevention valve 10 is set to a weight that allows the valve body portion 10A to move upward when the pump runner 5 rotates, and away from the horizontal valve seat portion 3B, and when the pump runner 5 stops rotating. By the weight of the valve body portion 10A of the backflow prevention valve 10, the valve body portion 10A rotates downward and presses against the horizontal valve seat portion 3B, so that the fluid from the suction chamber 8 to the suction water passage 7 side is transferred. The reverse flow is prevented. The detailed structure of the backflow prevention valve 10 is shown in FIGS. A circular central recess 10C and a ring groove 10D are provided on the upper surface of the valve body 10A of the backflow prevention valve 10 to prevent sink marks when the backflow prevention valve 10 is molded.
仕切り体14は、合成樹脂製とし、図1及び図6に示すように、ポンプランナー5の回転遠心力によりそのポンプランナー5の外方に押しやられた流体をポンプランナー収納室6から気水分離室2A側に吐出させる吐出開口14Bを有する渦巻き形状の水案内壁部14Aと、逆流防止弁10を収納するための袋状部14Cと、ポンプランナー5の中央開口5Bに対向するように設けられる略ベルマウス状の流入開口14Dと、ベースカバー3の立ち上がり外周壁部3D(第1仕切り壁3D−1、第2仕切り壁3D−2、第3仕切り壁3D−3及び第4仕切り壁3D−4)の上端部が嵌めこまれる嵌合溝(凹み部)14Eと、逆流防止弁10の取り付け片部10Bが逆流防止弁用取り付け凹部3Cから抜け出るのを押える押え部14Fが一体に形成されている。 The partition body 14 is made of synthetic resin, and as shown in FIGS. 1 and 6, the fluid pushed out of the pump runner 5 by the rotational centrifugal force of the pump runner 5 is separated from the pump runner storage chamber 6 by air and water. A spiral water guide wall 14A having a discharge opening 14B for discharging to the chamber 2A side, a bag-like part 14C for storing the backflow prevention valve 10, and a central opening 5B of the pump runner 5 are provided. A substantially bellmouth-shaped inflow opening 14D and a rising outer peripheral wall portion 3D of the base cover 3 (first partition wall 3D-1, second partition wall 3D-2, third partition wall 3D-3, and fourth partition wall 3D- 4) A fitting groove (concave portion) 14E into which the upper end portion is fitted, and a presser portion 14F for holding the mounting piece portion 10B of the backflow prevention valve 10 from coming out of the backflow prevention valve mounting recess 3C are integrated. It has been made.
仕切り体14の嵌合溝14Eをベースカバー3の立ち上がり外周壁部3Dに嵌め込んだ状態では、図1に示すように、ベースカバー3の水平弁座部3Bと仕切り体14の内側壁との間に、連通路3H側を流入開口14D側に連通させる連絡開口Gが形成されるようにしてある。なお、仕切り体14の嵌合溝14Eの外縁には、ベースカバー3の立ち上がり外周壁部3Dのうちの第2仕切り壁3D−2、第3仕切り壁3D−3及び第4仕切り壁3D−4と仕切り体14の嵌合溝14Eとの水密性を向上させるためのスカート部(裾部)14Gが、一体的に設けられている。また、仕切り体14の袋状部14Cには、図5、図12及び図13などに示すように、その袋状部14Cの側壁のうちの、吸込水通路用連結筒体3A側に面した側壁の中央部分を外方に膨出させた膨出部14Hを設けるようにしてある。これにより、仕切り体14の袋状部14Cを大きくすることなく、円盤状の弁体部10Aが、袋状部14Cの側壁に接触しないで上下動することのできる必要最小限の隙間を、確保できる。 In a state where the fitting groove 14E of the partition 14 is fitted into the rising outer peripheral wall 3D of the base cover 3, as shown in FIG. 1, the horizontal valve seat portion 3B of the base cover 3 and the inner wall of the partition 14 are separated. A communication opening G is formed between the communication passage 3H and the inflow opening 14D. In addition, at the outer edge of the fitting groove 14E of the partition body 14, the second partition wall 3D-2, the third partition wall 3D-3, and the fourth partition wall 3D-4 of the rising outer peripheral wall portion 3D of the base cover 3 are provided. And a skirt portion (hem portion) 14G for improving the watertightness between the partitioning body 14 and the fitting groove 14E of the partition body 14 are integrally provided. Further, the bag-like portion 14C of the partition 14 faces the suction water passage connecting cylinder 3A side of the side wall of the bag-like portion 14C, as shown in FIGS. A bulging portion 14H is formed by bulging the central portion of the side wall outward. This ensures a minimum necessary gap that allows the disc-like valve body portion 10A to move up and down without contacting the side wall of the bag-like portion 14C without enlarging the bag-like portion 14C of the partition body 14. it can.
仕切り体14の吐出開口14Bの前方には、図5や図6に示すように、仕切り体14の吐出開口14Bから吐出する流体の流れの方向を上方に変える方向変更壁体14Jが設けられている。本実施形態では、仕切り体14の吐出開口14Bから吐出する流体を気水分離室側に向って案内する流体案内壁面14Kを、仕切り体14の吐出開口14Bに連なるところの仕切り体14の外周壁に一体形成するとともに、その流体案内壁面14Kの終端部分に方向変更壁体14Jを一体形成する構成としてある。方向変更壁体14Jは、仕切り体14の吐出開口14Bから吐出した流体が方向変更壁体14Kに衝突した後、その流体が略直角に上昇するように板状としてある。しかも、方向変更壁体14Kにおける仕切り体14の吐出開口14Bから吐出した流体の衝突面の面積が、仕切り体14の吐出開口14Bの流出開口面積と略同一となるように設定してある。 As shown in FIGS. 5 and 6, a direction changing wall body 14 </ b> J is provided in front of the discharge opening 14 </ b> B of the partition body 14 to change the flow direction of the fluid discharged from the discharge opening 14 </ b> B of the partition body 14 upward. Yes. In the present embodiment, the outer peripheral wall of the partition body 14 is connected to the fluid guide wall surface 14K that guides the fluid discharged from the discharge opening 14B of the partition body 14 toward the air-water separation chamber side. And the direction changing wall body 14J are integrally formed at the terminal portion of the fluid guide wall surface 14K. The direction changing wall body 14J has a plate shape so that after the fluid discharged from the discharge opening 14B of the partitioning body 14 collides with the direction changing wall body 14K, the fluid rises substantially at a right angle. Moreover, the area of the collision surface of the fluid discharged from the discharge opening 14B of the partition 14 in the direction changing wall 14K is set to be substantially the same as the outflow opening area of the discharge opening 14B of the partition 14.
ポンプケーシング本体2及びベースカバー3には、仕切り体14の吐出開口14Bから気水分離室2A側に向かって吐出された流体が、吸込水通路7を構成する細長筒状体9の周囲に沿って旋回するのを阻止する旋回阻止体15が形成されている。旋回阻止体15は、図1に示すように、細長筒状体9とポンプケーシング本体2内側壁との間の間隙を塞ぐ第1塞ぎ体15Aと、ベースカバー3の吸込水通路用連結筒体3Aとベースカバー3の内側壁との間の間隙を塞ぐ第2塞ぎ体15Bとからなっている。第1塞ぎ体15Aは、細長筒状体9とポンプケーシング本体2内側壁とを一体的に連結してなる遮蔽板部からなっており、細長筒状体9をポンプケーシング本体2内側壁に近づけて配置することによって、その遮蔽板部の横幅を小さくするようにしてある。第2塞ぎ体15Bは、図5及び図6に示すように、吸込水通路用連結筒体3Aとベースカバー3の内側壁とを一体的に連結してなる遮蔽板部からなっており、吸込水通路用連結筒体3Aをベースカバー3の内側壁に近づけて配置することによって、その遮蔽板部の横幅を小さくするようにしてある。 In the pump casing body 2 and the base cover 3, the fluid discharged from the discharge opening 14 </ b> B of the partition body 14 toward the air / water separation chamber 2 </ b> A is along the periphery of the elongated cylindrical body 9 constituting the suction water passage 7. A turning prevention body 15 is formed to prevent turning. As shown in FIG. 1, the rotation preventing body 15 includes a first closing body 15 </ b> A that closes a gap between the elongated cylindrical body 9 and the inner wall of the pump casing body 2, and a connecting cylinder for the suction water passage of the base cover 3. It consists of a second closing body 15B that closes the gap between 3A and the inner wall of the base cover 3. 15 A of 1st obstructions consist of the shielding board part formed by integrally connecting the elongate cylindrical body 9 and the inner wall of the pump casing main body 2, and make the elongate cylindrical body 9 close to the inner wall of the pump casing main body 2. By arranging them, the horizontal width of the shielding plate portion is reduced. As shown in FIG. 5 and FIG. 6, the second closing body 15 </ b> B is composed of a shielding plate portion integrally connecting the suction water passage connecting cylinder 3 </ b> A and the inner wall of the base cover 3. By arranging the water-passage connecting cylinder 3A close to the inner wall of the base cover 3, the lateral width of the shielding plate portion is reduced.
本実施形態では、第1塞ぎ体15Aを、細長筒状体9とポンプケーシング本体2内側壁との間の隙間全長に亘って形成するようにしてあるとともに、第2塞ぎ体15Bを、吸込水通路用連結筒体3Aとベースカバー3の内側壁との間の隙間全長に亘って形成するようにしてある。本実施形態では、ポンプケーシング本体2の吐出口用筒体2Dは、第1塞ぎ体15Aの側面側外方に位置するところのポンプケーシング本体2の上部側面に設けるようにしてある。 In the present embodiment, the first closing body 15A is formed over the entire length of the gap between the elongated cylindrical body 9 and the inner wall of the pump casing body 2, and the second closing body 15B The gap is formed over the entire length of the gap between the passage connecting cylinder 3 </ b> A and the inner wall of the base cover 3. In the present embodiment, the discharge port cylinder 2D of the pump casing body 2 is provided on the upper side surface of the pump casing body 2 located outside the side surface of the first closing body 15A.
立ち上がり外周壁部3D及び水案内壁部14Aとベースカバー3の内側壁との間には、ポンプランナー収納室6から気水分離室2A側に吐出した流体を、図5の一点鎖線P1に示すように、ポンプランナー収納室6の水案内壁部14A及び吸込室8の外周壁となる立ち上がり外周壁部3Dの外周を循環させて気水分離室2A側に戻すための循環通路16が形成されている。循環通路16の途中であって仕切り体14の水案内壁部14Aにおける下端部分には、循環通路16を循環する流体をポンプランナー収納室6内に戻すための、略細長楕円形状の戻し水口17が形成されている。本実施形態では、戻し水口17と方向変更壁体14Jとの位置関係が、図5に示すように、ポンプランナー5の筒状軸部5Aの中心にして略対向するように設定することで、気水分離室2A側及び仕切り体14の吐出開口14B部分の両方から最も離れた位置に略細長楕円形状の戻し水口17が形成されるようにしてある。 Between the rising outer peripheral wall portion 3D and the water guide wall portion 14A and the inner side wall of the base cover 3, the fluid discharged from the pump runner storage chamber 6 to the steam / water separation chamber 2A side is shown by a one-dot chain line P1 in FIG. As described above, the circulation passage 16 for circulating the outer periphery of the water guide wall portion 14A of the pump runner storage chamber 6 and the outer periphery of the rising outer peripheral wall portion 3D that becomes the outer peripheral wall of the suction chamber 8 to return to the steam-water separation chamber 2A side is formed. ing. In the middle of the circulation passage 16 and at the lower end portion of the water guide wall portion 14A of the partition member 14, a substantially elongated elliptical return water port 17 for returning the fluid circulating through the circulation passage 16 into the pump runner storage chamber 6 is provided. Is formed. In the present embodiment, by setting the positional relationship between the return water port 17 and the direction changing wall body 14J to be substantially opposed to the center of the cylindrical shaft portion 5A of the pump runner 5 as shown in FIG. A return port 17 having a substantially elongated ellipse shape is formed at a position farthest from both the air / water separation chamber 2 </ b> A side and the discharge opening 14 </ b> B portion of the partition 14.
気水分離室2A内を貫きベースカバー3内底に向って略垂直に延在する細長筒状体9は、その上端が吸込口用筒体2Cに一体的に連なり、かつその下端がベースカバー3の吸込水通路用連結筒体3Aに連なっている。ベースカバー3の吸込水通路用連結筒体3Aの内周には、リング状の弾性封止部材(パッキン)18を載置可能とする段差部3Eが形成されている。細長筒状体9は、その細長筒状体9の下端の径小部9Aを吸込水通路用連結筒体3Aに挿入した後、その細長筒状体9の径小部9Aの端面を、弾性封止部材18を介して吸込水通路用連結筒体3Aの段差部3Eに押圧することで、ベースカバー3の吸込水通路用連結筒体3Aに水密的に連結される。 The elongated cylindrical body 9 that penetrates through the air / water separation chamber 2A and extends substantially vertically toward the inner bottom of the base cover 3 has an upper end that is integrally connected to the suction port cylinder 2C, and a lower end that is the base cover. 3 is connected to 3A of connecting cylinders for suction water passages. On the inner periphery of the suction water passage connecting cylinder 3A of the base cover 3, a stepped portion 3E on which a ring-shaped elastic sealing member (packing) 18 can be placed is formed. The elongated cylindrical body 9 is formed by inserting the small diameter portion 9A at the lower end of the elongated cylindrical body 9 into the suction water passage connecting cylinder 3A, and then elastically deforming the end surface of the small diameter portion 9A of the elongated cylindrical body 9. By pressing the stepped portion 3E of the suction water passage connecting cylinder 3A via the sealing member 18, the suction water passage connection cylinder 3A of the base cover 3 is connected in a watertight manner.
本実施形態では、図1に示すように、仕切り体14をポンプケーシング本体2の外底部2Eと立ち上がり外周壁部3Dとの間で挟持することにより、細長筒状体9がベースカバー3の吸込水通路用連結筒体3Aに連結されて吸込室8が形成されると同時に、逆流防止弁用取り付け凹部3Cに逆流防止弁10の取り付け片部10Bを固定保持するようにしてある。この場合、逆流防止弁10の取り付け片部10Bは、逆流防止弁10の弁体部10Aの重量で、その逆流防止弁10の弁体部10Aの平坦面10Eが、ベースカバー3の水平弁座部3Bに押圧されるように、ベースカバー3の逆流防止弁用取り付け凹部3Cに取り付けられる。なお、本実施形態では、吸込口用筒体2Cから細長筒状体9内及び連通路3H内を通って水平弁座部3Bに至る通路を、吸込水通路7と称し、かつ水平弁座部3Bから仕切り体14の流入開口14Dに至る通路を、吸込室8と称している。 In the present embodiment, as shown in FIG. 1, the elongated cylindrical body 9 is sucked into the base cover 3 by sandwiching the partition body 14 between the outer bottom portion 2 </ b> E of the pump casing body 2 and the rising outer peripheral wall portion 3 </ b> D. The suction chamber 8 is formed by being connected to the water passage connecting cylinder 3A, and at the same time, the mounting piece 10B of the backflow prevention valve 10 is fixedly held in the backflow prevention valve mounting recess 3C. In this case, the attachment piece 10B of the backflow prevention valve 10 is the weight of the valve body portion 10A of the backflow prevention valve 10, and the flat surface 10E of the valve body portion 10A of the backflow prevention valve 10 is the horizontal valve seat of the base cover 3. It is attached to the backflow prevention valve mounting recess 3C of the base cover 3 so as to be pressed by the portion 3B. In the present embodiment, the passage from the suction port cylinder 2C through the elongated cylindrical body 9 and the communication passage 3H to the horizontal valve seat portion 3B is referred to as a suction water passage 7 and the horizontal valve seat portion. A passage from 3B to the inflow opening 14D of the partition 14 is referred to as a suction chamber 8.
本実施形態では、駆動モータ4を、外郭形状を小判筒状とした小形の整流子モータとしてある。駆動モータ4は、約7000r/分の回転数が得られるように設定されている。ポンプランナー10の最外径は、約26mmに設定されている。細長筒状体9の内径を約14mmに設定されている。仕切り体14の流入開口14Dから気水分離室2A側に向って吐出する流体の流速は、約2m/秒に設定されている。 In this embodiment, the drive motor 4 is a small commutator motor whose outer shape is a small cylinder. The drive motor 4 is set so as to obtain a rotational speed of about 7000 r / min. The outermost diameter of the pump runner 10 is set to about 26 mm. The inner diameter of the elongated cylindrical body 9 is set to about 14 mm. The flow rate of the fluid discharged from the inflow opening 14D of the partition body 14 toward the steam-water separation chamber 2A is set to about 2 m / second.
ポンプケーシング本体2の上部部分には、図2に示すように、吸込口用筒体2C、吐出口用筒体2D及び呼び水口用筒体2Hが配設されている。ポンプケーシング本体2の吐出口用筒体2D及び呼び水口用筒体2Hは、水平方向(駆動モータ4の回転軸4Aの軸方向に対して直角の方向)に延在させるように形成されている。ポンプケーシング本体2の上面に形成された吸込口用筒体2Cには、その開口端に円筒状のホース取り付け用フランジ2Lが形成されている。ポンプケーシング本体2の吸込口用筒体2Cには、ホース取り付け用フランジ2Lを利用して、揚水用の可撓性のある吸水ホース(図示せず)が着脱可能に取り付けられる。この吸水ホース(図示せず)の自由端側は、浴槽(図示せず)内に投入されている。ポンプケーシング本体2の吸込口用筒体2Cの内方には、風呂水に含まれている細塵を除去するフイルター(図示せず)が着脱自在に設けられている。 As shown in FIG. 2, a suction port cylinder 2 </ b> C, a discharge port cylinder 2 </ b> D, and a priming port cylinder 2 </ b> H are disposed in the upper portion of the pump casing body 2. The discharge port cylinder 2D and the priming port cylinder 2H of the pump casing body 2 are formed to extend in a horizontal direction (a direction perpendicular to the axial direction of the rotation shaft 4A of the drive motor 4). . A cylindrical hose attachment flange 2L is formed at the opening end of the suction port cylinder 2C formed on the upper surface of the pump casing body 2. A flexible water absorption hose (not shown) for pumping water is detachably attached to the suction port cylinder 2C of the pump casing body 2 using a hose attachment flange 2L. The free end side of this water absorption hose (not shown) is put into a bathtub (not shown). A filter (not shown) for removing fine dust contained in the bath water is detachably provided inside the suction port cylinder 2C of the pump casing body 2.
ポンプケーシング本体2とベースカバー3は、ポンプケーシング本体2の取り付けフランジ2Mの端面全周に設けた溶着用リブ2Nを、ベースカバー3の取り付けフランジ3Fの端面全周に設けた溶着用溝3Gに嵌合した後、その溶着用溝3Gの全周に予め挿入したステンレス線(接続線)19に電気を流すことで溶着用リブ2Nを溶着用溝3G内で熱溶着させることにより、一体的化される。 The pump casing body 2 and the base cover 3 are provided with welding ribs 2N provided on the entire circumference of the end face of the mounting flange 2M of the pump casing body 2 in the welding grooves 3G provided on the entire circumference of the end face of the mounting flange 3F of the base cover 3. After the fitting, the welding rib 2N is heat-welded in the welding groove 3G by flowing electricity through a stainless steel wire (connection wire) 19 inserted in advance around the entire circumference of the welding groove 3G. Is done.
深皿状のベースカバー3の内底に、吸込水通路用連結筒体3Aとこの水平弁座部3Bと逆流防止弁用取り付け凹部3Cと立ち上がり外周壁部3Dと旋回阻止体15の第2塞ぎ体15Bとを設けたベースカバー3を形成するには、ベースカバー3の上面側を成形するための上型と、ベースカバー3の下面側を成形するための下型と、吸込水通路用連結筒体3Aから水平弁座部3Bまでの連通路3Hを成形するための側方型とによって、成形される。ベースカバー3の側面にできた型抜き開口3Jは、栓用弾性封止部材(Oリング)21及び栓部材(キャップ)20によって、水密的に密閉される。また、仕切り体14は、水案内壁部14Aを設ける側の面を形成するための上型と、嵌合溝14Eを設ける側の面を形成するための下型によって、上下に型抜きすることで、成形することができ、しかも、その上下に型抜きすることによって、吐出開口14B、流体案内壁面14K及び方向変更壁体14Jを、仕切り体14(水案内壁部14A及び袋状部14C)の側面部分に、かつ戻し水口17を、仕切り体14の水案内壁部14Aにおける下端部分に、それぞれ容易に設けることができる。 On the inner bottom of the deep-plate-shaped base cover 3, a second blocking of the suction water passage connecting cylinder 3 </ b> A, the horizontal valve seat portion 3 </ b> B, the backflow prevention valve mounting recess 3 </ b> C, the rising outer peripheral wall portion 3 </ b> D and the swirl prevention body 15 In order to form the base cover 3 provided with the body 15B, an upper mold for molding the upper surface side of the base cover 3, a lower mold for molding the lower surface side of the base cover 3, and a connection for the suction water passage It is molded by a lateral mold for molding the communication passage 3H from the cylindrical body 3A to the horizontal valve seat portion 3B. The die opening 3J formed on the side surface of the base cover 3 is sealed in a watertight manner by a stopper elastic sealing member (O-ring) 21 and a stopper member (cap) 20. Moreover, the partition 14 is die-cut up and down by an upper mold for forming a surface on the side where the water guide wall 14A is provided and a lower mold for forming a surface on the side where the fitting groove 14E is provided. The discharge opening 14B, the fluid guide wall surface 14K, and the direction changing wall body 14J can be divided into the partition body 14 (water guide wall portion 14A and bag-like portion 14C) by punching up and down. The return water port 17 can be easily provided on the side surface portion of the water guide wall portion 14 </ b> A of the partition body 14.
上記実施形態の自吸式ポンプ装置1を使用する場合には、始めに、ポンプケーシング本体2の吸込口用筒体2Cに吸水ホース(図示せず)を装着した後、呼び水口用筒体2Hから気水分離室2A、ポンプランナー収納室6、吸込室8及び細長筒状体9に、水位L1(吐出口用筒体2Dの下端高さ位置)まで、呼び水(流体)を注入する。 When the self-priming pump device 1 of the above embodiment is used, first, a suction hose (not shown) is attached to the suction port cylinder 2C of the pump casing body 2, and then the priming port cylinder 2H. To the air / water separation chamber 2A, the pump runner storage chamber 6, the suction chamber 8 and the elongated cylindrical body 9 to the water level L1 (the lower end height position of the discharge port cylinder 2D).
次いで、自吸式ポンプ装置1の内部に、呼び水が注入された状態で、駆動モータ4を回転させて、駆動モータ4の回転軸4Aに設けたポンプランナー5を高速で回転させる。このことにより、ポンプランナー5の中心は負圧となる。そして、ポンプランナー5の中心が負圧になると、この負圧に引かれて、逆流防止弁10が開き、吸込口用筒体2Cに装着された吸水ホース(図示せず)内の空気が、ポンプランナー5側に吸込まれて、呼び水と気水混合された状態となり、ポンプランナー収納室6内を高速で通過し、空気を含んだ呼び水が仕切り体14の吐出開口14Bから高速で吐出する。 Next, in a state where priming water is injected into the self-priming pump device 1, the drive motor 4 is rotated, and the pump runner 5 provided on the rotation shaft 4 </ b> A of the drive motor 4 is rotated at a high speed. As a result, the center of the pump runner 5 becomes a negative pressure. When the center of the pump runner 5 becomes negative pressure, the negative pressure is pulled, the backflow prevention valve 10 is opened, and the air in the water absorption hose (not shown) attached to the suction port cylinder 2C is The air is sucked into the pump runner 5 and mixed with priming water and air, and passes through the pump runner storage chamber 6 at high speed. The priming water containing air is discharged from the discharge opening 14B of the partition body 14 at high speed.
仕切り体14の吐出開口14Bから吐出した空気を含んだ呼び水は、流体案内壁面14Kに案内されて方向変更壁体14Jに衝突して、その呼び水の流速が弱められとともに、呼び水の流れ方向が水平方向から垂直方向に変えられるために、呼び水に含まれている比重の軽い空気が気水分離室2Aの上方に向かって移動するとともに、方向変更壁体14Jに衝突した後に、気水分離室2Aに導かれた呼び水が、旋回阻止体15を構成する第1塞ぎ体15A及び第2塞ぎ体15Bによって細長筒状体9の周囲を縦渦となって旋回することなく、気水分離室2Aの広い部屋部分に導かれて気水分離されるので、呼び水に含まれた空気がポンプケーシング本体2の吐出口用筒体2Dから外(大気)に効率よく排気され、かつ、呼び水がポンプケーシング本体2の吐出口用筒体2Dから外(大気)に流出するのを抑止される。 The priming water containing the air discharged from the discharge opening 14B of the partition body 14 is guided by the fluid guide wall surface 14K and collides with the direction changing wall body 14J, the flow rate of the priming water is weakened, and the priming water flow direction is horizontal. In order to change from the direction to the vertical direction, air having a low specific gravity contained in the priming water moves toward the upper side of the steam-water separation chamber 2A, and after colliding with the direction changing wall body 14J, the steam-water separation chamber 2A. The priming water led to the air-water separation chamber 2A does not swirl around the elongated cylindrical body 9 as a vertical vortex by the first closing body 15A and the second closing body 15B constituting the turning prevention body 15. Since air and water are separated by being led to a large room portion, the air contained in the priming water is efficiently exhausted to the outside (atmosphere) from the discharge port cylinder 2D of the pump casing body 2, and the priming water is pump casing. It is inhibited from flowing to the outside (atmosphere) from the discharge port accommodating cylinder 2D grayed body 2.
一方、方向変更壁体14Jに衝突して流速が弱められた呼び水は、気水分離室2Aに導かれた後、立ち上がり外周壁部3D及び水案内壁部14Aとベースカバー3内側壁との間に形成された循環通路16に導かれてその循環通路16に設けた戻し水口17からポンプランナー収納室6内に戻り、吸込口用筒体2Cより吸込まれた空気と混合して再び高速で仕切り体14の吐出開口14Bから方向変更壁体14Jに向かって吐出させられる。この動作を繰り返すことで、吸込口用筒体2Cに装着された吸水ホース内の空気が完全に排出されて自吸運転が完了する。自吸運転が完了すると、ポンプケーシング本体2の吸込口用筒体2Cより揚水された流体が、吸込水通路7及び吸込室8を介してポンプランナー収納室6を構成する水案内壁部14Aの吐出開口14Bから気水分離室2Aに流入して、吐出口用筒体2Dから吐出されるようになることで、給水運転が行われるようになる。 On the other hand, the priming water whose velocity is weakened by colliding with the direction changing wall body 14J is guided to the steam / water separation chamber 2A, and then rises between the outer peripheral wall portion 3D and the water guide wall portion 14A and the inner wall of the base cover 3. It is led to the circulation passage 16 formed in the circulation passage 16 and returned to the pump runner storage chamber 6 from the return water port 17 provided in the circulation passage 16, and mixed with the air sucked from the suction port cylinder 2C and again partitioned at high speed. It is discharged from the discharge opening 14B of the body 14 toward the direction changing wall body 14J. By repeating this operation, the air in the water absorption hose attached to the suction port cylinder 2C is completely discharged, and the self-priming operation is completed. When the self-priming operation is completed, the fluid pumped up from the suction port cylinder 2C of the pump casing body 2 passes through the suction water passage 7 and the suction chamber 8 to the water guide wall 14A constituting the pump runner storage chamber 6. The water supply operation is performed by flowing into the air / water separation chamber 2A from the discharge opening 14B and being discharged from the discharge port cylinder 2D.
給水運転を所望時間実行させた後、駆動モータ4を停止させると、ポンプランナー5の中心の負圧がなくなり、逆流防止弁10の弁体部10Aが重量(自重)で水平弁座部3Bに押圧させられることによって、逆流防止弁10が閉じる。この結果、吸込室8から吸込水通路7側への流体の逆流が確実に阻止され、気水分離室2A及びポンプランナー収納室6内に流体が残った状態が維持させることによって、次回の自吸運転に備えることとなり、一連の自吸運転及び給水運転が終了する。 When the drive motor 4 is stopped after the water supply operation is executed for a desired time, the negative pressure at the center of the pump runner 5 disappears, and the valve body portion 10A of the backflow prevention valve 10 is moved to the horizontal valve seat portion 3B by weight (self-weight). The backflow prevention valve 10 is closed by being pressed. As a result, the backflow of the fluid from the suction chamber 8 to the suction water passage 7 side is reliably prevented, and the state in which the fluid remains in the steam / water separation chamber 2A and the pump runner storage chamber 6 is maintained, so that In preparation for the suction operation, a series of self-priming operation and water supply operation are completed.
次に、上記実施形態の自吸式ポンプ装置1の組立手順を、詳説する。 Next, the assembly procedure of the self-priming pump device 1 of the above embodiment will be described in detail.
まず、ポンプケーシング本体2の支え筒部2Fに、シール部材11を装着した後、ポンプケーシング本体2の駆動モータ収納室2Bに駆動モータ4を挿入してその駆動モータ4の回転軸4Aを、回転軸挿入開口2Sに挿入することにより、支え筒部2F内に突出させ、その突出させた回転軸4Aに、ポンプランナー5の軸部を圧入固定し、その後、モータキャップ12をポンプケーシング本体2の駆動モータ収納室2Bの上方に位置するポンプケーシング本体2の上面部分に取り付けることにより、ポンプケーシング本体2側の部組(以下、ポンプケーシング部組と称する。)を完成させる。 First, after the seal member 11 is mounted on the support cylinder portion 2F of the pump casing body 2, the drive motor 4 is inserted into the drive motor storage chamber 2B of the pump casing body 2, and the rotation shaft 4A of the drive motor 4 is rotated. By inserting it into the shaft insertion opening 2S, the shaft portion of the pump runner 5 is press-fitted and fixed to the protruding rotating shaft 4A, and then the motor cap 12 is attached to the pump casing main body 2. By attaching to the upper surface portion of the pump casing main body 2 located above the drive motor storage chamber 2B, a set on the pump casing main body 2 side (hereinafter referred to as pump casing set) is completed.
次いで、予め、型抜き開口3Jを、栓用弾性封止部材(パッキン)21を介して栓部材20を溶着等で取り付けることによって密閉してなるベースカバー3内に、逆流防止弁10に、逆流防止弁10と弾性封止部材(パッキン)18を装着する。すなわち、ベースカバー3の吸込水通路用連結筒体3A内に弾性封止部材(パッキン)18を挿入するとともに、ベースカバー3の逆流防止弁用取り付け凹部3C内に逆流防止弁10の取り付け片部10Bを挿入する Next, the mold release opening 3J is previously sealed in the backflow prevention valve 10 in the base cover 3 which is sealed by attaching the plug member 20 by welding or the like via a plug elastic sealing member (packing) 21. The prevention valve 10 and the elastic sealing member (packing) 18 are attached. In other words, the elastic sealing member (packing) 18 is inserted into the suction cylinder for the suction water passage 3 </ b> A of the base cover 3, and the backflow prevention valve 10 mounting piece is inserted into the backflow prevention valve mounting recess 3 </ b> C of the base cover 3. Insert 10B
次いで、仕切り体14の下面に形成した嵌合溝14Eを、立ち上がり外周壁部3Dの上端に嵌め合わせることにより、仕切り体14をベースカバー3の立ち上がり外周壁部3Dに装着することで、逆流防止弁10の取り付け片部10Bを、仕切り体14の押え部14Fと逆流防止弁用取り付け凹部3Cが設けられる横架平板部3Kとの間で挟持させることによって、逆流防止弁10の取り付け片部10Bを逆流防止弁用取り付け凹部3Cに固定保持させた後、ベースカバー3の溶着用溝3Gの全周にステンレス線19を挿入することで、ベースカバー3側の部組(以下、ベースカバー部組と称する。)を完成させる。 Next, the fitting groove 14E formed on the lower surface of the partition body 14 is fitted to the upper end of the rising outer peripheral wall portion 3D so that the partition body 14 is mounted on the rising outer peripheral wall portion 3D of the base cover 3, thereby preventing backflow. The attachment piece 10B of the check valve 10 is sandwiched between the holding part 14F of the partition 14 and the horizontal flat plate part 3K provided with the attachment recess 3C for the check valve. Is fixedly held in the mounting recess 3C for the backflow prevention valve, and then the stainless steel wire 19 is inserted into the entire circumference of the welding groove 3G of the base cover 3, so that the base cover 3 side assembly (hereinafter referred to as the base cover assembly) Is completed).
次いで、ポンプケーシング本体2における細長筒状体9の径小部9Aを、ベースカバー3の吸込水通路用連結筒体3A内に嵌合させるとともに、ポンプケーシング本体2の溶着用リブ2Nをベースカバー3の溶着用溝3Gに嵌合することで、ポンプケーシング部組をベースカバー部組に組み込む。 Next, the small diameter portion 9A of the elongated cylindrical body 9 in the pump casing main body 2 is fitted into the suction water passage connecting cylinder 3A of the base cover 3, and the welding rib 2N of the pump casing main body 2 is attached to the base cover. 3, the pump casing part set is incorporated into the base cover part set.
最後に、ポンプケーシング本体2の取り付けフランジ2Mとベースカバー3の取り付けフランジを、そのベースカバー3の溶着用溝3Gに挿入されているステンレス線19に通電することによって溶着させることで、ポンプケーシング部組と、ベースカバー部組が水密的に一体となり、自吸式ポンプ装置1の組立作業が終了する。 Finally, the mounting flange 2M of the pump casing main body 2 and the mounting flange of the base cover 3 are welded by energizing the stainless wire 19 inserted in the welding groove 3G of the base cover 3, so that the pump casing portion The assembly and the base cover assembly are integrated in a watertight manner, and the assembly work of the self-priming pump device 1 is completed.
上記実施形態の自吸式ポンプ装置1の組立手順によれば、すべての部品の組立作業を、流れ作業で円滑に難なく行うことができ、自吸式ポンプ装置1の製作性を向上させることができる。 According to the assembly procedure of the self-priming pump device 1 of the above embodiment, the assembly work of all parts can be performed smoothly and without difficulty in the flow work, and the manufacturability of the self-priming pump device 1 can be improved. it can.
さらに、上記実施形態の自吸式ポンプ装置1によれば、仕切り体14の吐出開口14Bから吐出された呼び水に混合された空気を円滑に分離してポンプケーシング本体2の吐出口用筒体2D及び呼び水口用筒体2Hから効率よく排出されることができるとともに、ポンプケーシング本体2内の呼び水が吐出口用筒体2D及び呼び水口用筒体2Hからポンプケーシング本体2外に吐出して減少するのを抑えることができ、自吸性能を向上させることができる。なお、上記実施形態の自吸式ポンプ装置1によれば、一端がポンプケーシング本体2の吸込口用筒体2Cに取り付けられ、かつ、他端が浴槽内に投入された長さ4mの蛇腹タイプの吸水ホースを使用して、吸上げ高さ1.2mの条件で吸水させた場合に、自吸時間は従来よりも約10秒短縮することが可能であることが確認できた。 Furthermore, according to the self-priming pump device 1 of the above embodiment, the air mixed in the priming water discharged from the discharge opening 14B of the partition body 14 is smoothly separated to discharge the cylinder 2D for the discharge port of the pump casing body 2. In addition, the priming water in the pump casing body 2 can be efficiently discharged from the priming port cylinder 2H, and the priming water in the pump casing main body 2 is discharged out of the pump casing main body 2 from the discharge port cylinder 2D and the priming port cylinder 2H. Can be suppressed, and self-priming performance can be improved. In addition, according to the self-priming pump device 1 of the above-described embodiment, a bellows type having a length of 4 m, one end of which is attached to the suction port cylinder 2C of the pump casing body 2 and the other end is put into the bathtub. It was confirmed that the self-priming time can be shortened by about 10 seconds compared with the conventional case when water is absorbed under the condition of a suction height of 1.2 m using the water absorption hose.
さらに、上記実施形態の自吸式ポンプ装置1によれば、吐出口用筒体2Dを呼び水口用筒体2Hに設けられている位置に設け、かつ、呼び水口用筒体2Hを吐出口用筒体2Dに設けられている位置に設けるようにしても、仕切り体14の吐出開口14Bから吐出された呼び水に混合された空気をポンプケーシング本体2の吐出口用筒体2D及び呼び水口用筒体2Hから効率よく排出されることができ、かつ、ポンプケーシング本体2内の呼び水が吐出口用筒体2D及び呼び水口用筒体2Hからポンプケーシング本体2外に吐出して減少するのを抑えることができる。したがって、トップカバーなどへの載置条件の異なる洗濯機に合わせて、吐出口用筒体2Dと呼び水口用筒体2Hの位置を変えることができので、自吸式ポンプ装置1の設計自由度を向上させることができる。 Further, according to the self-priming pump device 1 of the above embodiment, the discharge port cylinder 2D is provided at a position provided in the priming port cylinder 2H, and the priming port cylinder 2H is used for the discharge port. Even if it is provided at a position provided in the cylinder body 2D, the air mixed with the priming water discharged from the discharge opening 14B of the partition body 14 is supplied to the discharge port cylinder 2D and the priming port cylinder of the pump casing body 2. It can be efficiently discharged from the body 2H, and the priming water in the pump casing body 2 is prevented from being discharged out of the pump casing body 2 from the discharge port cylinder 2D and the priming port cylinder 2H to decrease. be able to. Accordingly, the positions of the discharge port cylinder 2D and the priming port cylinder 2H can be changed in accordance with washing machines having different mounting conditions on the top cover and the like, and thus the degree of freedom in design of the self-priming pump device 1 Can be improved.
さらに、上記実施形態の自吸式ポンプ装置1によれば、上下の型抜きで、仕切り体14の水案内壁部14Aにおける下端部分に戻し水口17及び吐出開口14Bを、簡単に作ることができるので、製作性がよい。また、仕切り体14は、流防止弁10の弁体部10Aを水平に配設することで、逆流防止弁10を収納するための袋状部14Cの高さを、水案内壁部14Aの高さと同一に設定することができるとともに、嵌合溝14Eを立ち上がり外周壁部3Dに嵌め込むことによって吸込室8が形成されるようにしたので、小形にすることができる。 Furthermore, according to the self-priming pump device 1 of the above-described embodiment, the return water port 17 and the discharge opening 14B can be easily made at the lower end portion of the water guide wall portion 14A of the partition body 14 by upper and lower die cutting. Therefore, the productivity is good. In addition, the partition body 14 is configured such that the valve body portion 10A of the flow prevention valve 10 is disposed horizontally, thereby increasing the height of the bag-like portion 14C for housing the backflow prevention valve 10 to the height of the water guide wall portion 14A. Since the suction chamber 8 is formed by rising the fitting groove 14E into the outer peripheral wall portion 3D, the size can be reduced.
さらに、上記実施形態の自吸式ポンプ装置1によれば、旋回阻止体15を、細長筒状体9外側壁とポンプケーシング本体2内側壁との間の間隙を塞ぐ第1塞ぎ体15Aと、ベースカバー3の吸込水通路用連結筒体3A外側壁とベースカバー3の内側壁との間の間隙を塞ぐ第2塞ぎ体15Bとから構成したので、第1塞ぎ体15Aをポンプケーシング本体2の成形時に一体に作ることができ、かつ、第2塞ぎ体15Bをベースカバー3の成形時に一体に作ることができるので、製作性の向上を図ることができる。 Furthermore, according to the self-priming pump device 1 of the above-described embodiment, the first blocking body 15A that blocks the rotation blocking body 15 between the outer wall of the elongated cylindrical body 9 and the inner wall of the pump casing body 2; Since the second cover 15B that closes the gap between the outer wall of the connecting cylinder 3A for the suction water passage of the base cover 3 and the inner wall of the base cover 3 is formed, the first block 15A is formed on the pump casing body 2. Since it can be made integrally at the time of molding and the second closing body 15B can be made integrally at the time of forming the base cover 3, it is possible to improve manufacturability.
さらに、上記実施形態の自吸式ポンプ装置1によれば、戻し水口17と方向変更壁体14Jとが、ポンプランナー5の筒状軸部5Aの中心にして略対向する位置関係となるように設定することにより、気水分離室2A側及び仕切り体14の吐出開口14B部分の両方から最も離れた位置に戻し水口17が設けられるようにしたので、仕切り体14の吐出開口14Bから気水分離室2A側に吐出した流体中に含まれている空気が戻し水口17から
ポンプランナー収納室6内に戻ることを抑止することができる。すなわち、戻し水口17
を気水分離室2A側から離れた位置に設けることで、仕切り体14の吐出開口14Bより気水分離室2A側に吐出した流体中に含まれている空気が、戻し水口17からポンプランナー収納室6内に戻ることが抑止されるとともに、戻し水口17が仕切り体14の吐出開口14Bから離れた位置に設けることで、仕切り体14の吐出開口14Bより気水分離室
2A側に吐出した流体中に含まれている空気が、戻し水口17からポンプランナー収納室6内に戻ることが抑止される。また、循環通路16をベースカバー3の内底に沿って形成させることができ、かつ、水案内壁部14Aの吐出開口14Bの高さ位置を、ベースカバー3内に設定することができるので、水案内壁部14Aの吐出開口14Bからポンプケーシング本体2の吐出口用筒体2Dまでの距離を大きく設定することができるため、気水分離が効率よく行われる。
Furthermore, according to the self-priming pump device 1 of the above-described embodiment, the return water port 17 and the direction changing wall body 14J are in a positional relationship so as to be substantially opposed to each other about the center of the cylindrical shaft portion 5A of the pump runner 5. By setting, the return water port 17 is provided at the position farthest from both the steam / water separation chamber 2 </ b> A side and the discharge opening 14 </ b> B portion of the partition body 14, so the steam / water separation is performed from the discharge opening 14 </ b> B of the partition body 14. It is possible to prevent the air contained in the fluid discharged to the chamber 2 </ b> A from returning from the return water port 17 into the pump runner storage chamber 6. That is, the return water port 17
Is provided at a position away from the air / water separation chamber 2A side, so that the air contained in the fluid discharged to the air / water separation chamber 2A side from the discharge opening 14B of the partition 14 is stored in the pump runner from the return water port 17. The fluid discharged into the chamber 6 is suppressed, and the return water port 17 is provided at a position away from the discharge opening 14B of the partition body 14, so that the fluid discharged from the discharge opening 14B of the partition body 14 to the steam-water separation chamber 2A side. The air contained therein is prevented from returning from the return water port 17 into the pump runner storage chamber 6. Further, since the circulation passage 16 can be formed along the inner bottom of the base cover 3, and the height position of the discharge opening 14B of the water guide wall portion 14A can be set in the base cover 3, Since the distance from the discharge opening 14B of the water guide wall portion 14A to the discharge port cylinder 2D of the pump casing body 2 can be set large, air-water separation is performed efficiently.
さらに、上記実施形態の自吸式ポンプ装置1によれば、ポンプランナー収納室6と吸込口用筒体2Cを連通させるところの細長筒状体9を、気水分離室2A内を貫きベースカバー3内底に形成した吸込室8に連通させるようにしたので、ポンプケーシング本体2及びベースカバー3を小形にまとめることができる。 Furthermore, according to the self-priming pump device 1 of the above-described embodiment, the elongated cylindrical body 9 that allows the pump runner storage chamber 6 and the suction port cylinder 2C to communicate with each other passes through the air-water separation chamber 2A and the base cover. 3 Since the suction chamber 8 formed in the inner bottom is communicated, the pump casing main body 2 and the base cover 3 can be combined into a small size.
さらに、上記実施形態の自吸式ポンプ装置1によれば、ベースカバー3の水平弁座部3Bの上面と逆流防止弁10の弁体部10Aの下面がともに水平となるので、水平弁座部3B全体に、逆流防止弁10の弁体部10Aが略均一に強く押し付けられるため、吸込室8から吸込水通路7を介して吸込口用筒体2C側への水の逆流を確実に阻止することができる。また、気水分離室2A内の細長筒状体9を、駆動モータ収納室2B側から離れる方向にずらしてあるので、逆流防止弁10の弁体部10Aを水平に配設するための水平方向の配置寸法を、ポンプケーシング本体2の外形寸法を大きくすることなく、確保できる。 Furthermore, according to the self-priming pump device 1 of the above embodiment, since the upper surface of the horizontal valve seat portion 3B of the base cover 3 and the lower surface of the valve body portion 10A of the backflow prevention valve 10 are both horizontal, the horizontal valve seat portion Since the valve body portion 10A of the backflow prevention valve 10 is pressed substantially uniformly and strongly on the entire 3B, the backflow of water from the suction chamber 8 to the suction port cylinder 2C side is surely prevented. be able to. Further, since the elongated cylindrical body 9 in the steam-water separation chamber 2A is shifted in the direction away from the drive motor storage chamber 2B, the horizontal direction for disposing the valve body portion 10A of the check valve 10 horizontally. Can be secured without increasing the external dimensions of the pump casing body 2.
さらに、上記実施形態の自吸式ポンプ装置1によれば、逆流防止弁10を、円盤状の弁体部10Aと、この弁体部10Aに一体的に形成された取り付け片部10Bとから構成し、しかも、弁体部10Aの重量を、ポンプランナーの回転時に弁体部10Aが上方に回動することで水平弁座部3Bから離れることが可能となる重量に設定し、かつポンプランナーの回転停止時に、弁体部10Aの重量で、その弁体部10Aが下方に回動して水平弁座部3Bに押圧されるようにしたので、吸込室8から吸込水通路7側への流体の逆流を確実に阻止することができる。 Furthermore, according to the self-priming pump device 1 of the above-described embodiment, the backflow prevention valve 10 includes the disc-like valve body portion 10A and the attachment piece portion 10B formed integrally with the valve body portion 10A. In addition, the weight of the valve body portion 10A is set to a weight that allows the valve body portion 10A to move away from the horizontal valve seat portion 3B when the pump runner rotates, and the pump runner's When the rotation is stopped, the valve body portion 10A is rotated downward by the weight of the valve body portion 10A so as to be pressed against the horizontal valve seat portion 3B, so that the fluid from the suction chamber 8 to the suction water passage 7 side is provided. Can be reliably prevented.
さらに、上記実施形態の自吸式ポンプ装置1によれば、吐出開口14Bを有する水案内壁部14A及び逆流防止弁10を収納する袋状部14Cを形成した仕切り体14を、ポンプケーシング本体2の外底部2Eと立ち上がり外周壁部3Dとの間で挟持することで、吸込室8を形成すると同時に、逆流防止弁用取り付け凹部3Cに逆流防止弁10の取り付け片部10Bが固定保持されるとともに、吸込水通路用連結筒体3Aに細長筒状体9の下端側が連結嵌合されるため、ポンプケーシング本体2と仕切り体14とベースカバー3との組立を円滑に行うことができる。 Furthermore, according to the self-priming pump device 1 of the above-described embodiment, the partition body 14 formed with the water guide wall portion 14A having the discharge opening 14B and the bag-like portion 14C for housing the backflow prevention valve 10 is provided with the pump casing body 2. By sandwiching between the outer bottom portion 2E and the rising outer peripheral wall portion 3D, the suction chamber 8 is formed, and at the same time, the mounting piece portion 10B of the backflow prevention valve 10 is fixedly held in the backflow prevention valve mounting recess 3C. Since the lower end side of the elongated cylindrical body 9 is connected and fitted to the suction water passage connecting cylinder 3A, the pump casing body 2, the partition body 14, and the base cover 3 can be assembled smoothly.
さらに、上記実施形態の自吸式ポンプ装置1では、逆流防止弁10によって、自吸後、ポンプランナー5の回転を停止させた場合に、吸込室8の水が吸水口2C側に逆流することなく、吸込室8及びポンプランナー収納室6に水が満たされているため、再度、ポンプランナー5を回転させると、例えば、浴槽(風呂)から洗濯槽への風呂水(洗濯水)の給水を、直ちに行わせることができので、洗濯作業において、洗濯工程終了後、給水工程を経由してすすぎ工程に移行する場合に、ポンプ自吸運転時間を要することなく、給水開始指令と同時に洗濯槽への風呂水(洗濯水)の給水を行わせることができ、洗濯作業時間を短縮させることができる。 Furthermore, in the self-priming pump device 1 of the above embodiment, when the rotation of the pump runner 5 is stopped after self-priming by the backflow prevention valve 10, the water in the suction chamber 8 flows back to the water inlet 2C side. Since the suction chamber 8 and the pump runner storage chamber 6 are filled with water, when the pump runner 5 is rotated again, for example, bath water (washing water) is supplied from the bathtub (bath) to the washing tub. In the washing operation, after the washing process is completed, when the process proceeds to the rinsing process via the water supply process, the self-priming operation time is not required. The bath water (washing water) can be supplied, and the washing work time can be shortened.
さらに、上記実施形態の自吸式ポンプ装置1によれば、ポンプランナー5の回転を停止した状態で、呼び水口用筒体2Hから気水分離室、ポンプランナー収納室6及び吸込室8内に流入させた水道水を、吐出口用筒体2Dから供給パイプ(図示せず)を介して洗濯槽(図示せず)へ流出させるように使用した場合であっても、逆流防止弁10が確実に閉じており、その水道水が吸込室8側から吸込水通路7を介してポンプケーシング本体2の外に溢れてしまうことがない。 Furthermore, according to the self-priming pump device 1 of the above embodiment, the pump runner 5 is stopped from rotating from the priming port cylinder 2H into the steam / water separation chamber, the pump runner storage chamber 6 and the suction chamber 8. Even when the inflowing tap water is used to flow out from the outlet cylinder 2D to the washing tub (not shown) through the supply pipe (not shown), the backflow prevention valve 10 is surely The tap water does not overflow from the pump chamber body 2 through the suction water passage 7 from the suction chamber 8 side.
上記実施形態の自吸式ポンプ装置1は、ポンプケーシング本体2に呼び水口用筒体2Hを設ける構成としているが、本発明は、これに限定されない。呼び水口用筒体2Hを設けないポンプケーシング本体としたポンプ装置であっても、本発明を採用することができる。また、上記実施形態例では、呼び水を水道水とし、かつ給水されるものを風呂水としたが、これに限定されるものではなく、他の流体を自吸運転及び給水運転させる場合にも、本発明を適用できる。 Although the self-priming pump apparatus 1 of the said embodiment is set as the structure which provides the cylinder 2H for priming ports in the pump casing main body 2, this invention is not limited to this. The present invention can be adopted even with a pump device having a pump casing body that does not include the priming port cylinder 2H. In the above embodiment, the priming water is tap water, and the water to be supplied is bath water, but is not limited to this, and when other fluids are self-priming and water supplying, The present invention can be applied.
1 自吸式ポンプ装置
2 ポンプケーシング本体
2A 気水分離室
2B 駆動モータ収納室
2C 吸込口用筒体
2D 吐出口用筒体
2H 呼び水口用筒体
3 ベースカバー
3A 吸込水通路用連結筒体
3B 水平弁座部
3C 逆流防止弁用取り付け凹部
3D 立ち上がり外周壁部
3H 連通路
3K 横架平板部
4 駆動モータ
4A 回転軸
5 ポンプランナー
5A 筒状軸部
6 ポンプランナー収納室
7 吸込水通路
8 吸込室
9 細長筒状体
10 逆流防止弁
14 仕切り体
14A 水案内壁部
14B 吐出開口
14C 袋状部
14D 流入開口
14J 方向変更壁体
14K 流体案内壁面
15 旋回阻止体
16 循環通路
17 戻し水口
DESCRIPTION OF SYMBOLS 1 Self-priming pump apparatus 2 Pump casing main body 2A Air-water separation chamber 2B Drive motor storage chamber 2C Suction cylinder 2D Discharge cylinder 2H Cylinder 3 Base cover 3A Suction water passage coupling cylinder 3B Horizontal valve seat portion 3C Backflow prevention valve mounting recess 3D Standing outer peripheral wall portion 3H Communication passage 3K Horizontal flat plate portion 4 Drive motor 4A Rotating shaft 5 Pump runner 5A Cylindrical shaft portion 6 Pump runner storage chamber 7 Suction water passage 8 Suction chamber DESCRIPTION OF SYMBOLS 9 Elongated cylindrical body 10 Backflow prevention valve 14 Partition body 14A Water guide wall part 14B Discharge opening 14C Bag-like part 14D Inflow opening 14J Direction change wall body 14K Fluid guide wall surface 15 Swing prevention body 16 Circulation path 17 Return water port
Claims (1)
前記仕切り体の吐出開口から吐出する流体の流れの方向を上方に変える方向変更壁体と、吐出開口の前方に一体的に成形して形成した仕切り体を、前記ポンプケーシング本体の外底部とベースカバーに一体的に成形して形成した立ち上がり外周壁との間で挟持することで前記吸込室を形成することを特徴とする縦型自吸式ポンプ装置。
The inside of the air / water separation chamber and the drive motor storage chamber are divided into right and left to discharge the fluid sucked into the suction cylinder and the cylinder for suction into the upper portion of the air / water separation chamber. A pump casing main body provided with a discharge port cylinder, a base cover for sealing a bottom opening of the pump casing main body, and a drive motor stored in the drive motor storage chamber. A pump runner storage chamber is formed between the pump casing main body and the base cover, which is positioned below and accommodates a pump runner connected to the rotation shaft of the drive motor. The pump runner storage chamber and the suction port The tubular body communicates via a suction water passage and a suction chamber, and the suction water passage extends through the air / water separation chamber toward the inner bottom of the base cover. Provided with a configuration including a cylindrical body, and provided with a backflow prevention valve for preventing a backflow of fluid from the suction chamber to the suction water passage side, and discharged from the pump runner storage chamber to the air / water separation chamber side A swirl prevention body is provided in the steam-water separation chamber for preventing fluid from swirling along the periphery of the elongated cylindrical body in the steam-water separation chamber, and the pump runner is rotated by a centrifugal force of the pump runner. A spiral water guide wall portion having a discharge opening for discharging fluid pushed outward from the pump runner storage chamber to the air / water separation chamber side and a bag-shaped portion storing the backflow prevention valve are integrated. In the self-priming pump device that forms the suction chamber by sandwiching the formed partition body between the outer bottom portion of the pump casing body and the rising outer peripheral wall portion,
A direction-changing wall that changes the flow direction of the fluid discharged from the discharge opening of the partition body upward, and a partition body that is integrally formed in front of the discharge opening are formed into an outer bottom portion and a base of the pump casing body. A vertical self-priming pump device characterized in that the suction chamber is formed by being sandwiched between a rising outer peripheral wall formed integrally with a cover .
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JP2008111089A JP4386951B2 (en) | 2008-04-22 | 2008-04-22 | Self-priming pump device |
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JP2008111089A JP4386951B2 (en) | 2008-04-22 | 2008-04-22 | Self-priming pump device |
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JP2009264125A JP2009264125A (en) | 2009-11-12 |
JP4386951B2 true JP4386951B2 (en) | 2009-12-16 |
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JP2008111089A Active JP4386951B2 (en) | 2008-04-22 | 2008-04-22 | Self-priming pump device |
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JP5614772B2 (en) * | 2010-10-27 | 2014-10-29 | 株式会社吉野工業所 | Synthetic valve structure of pump |
CN105822563B (en) * | 2016-06-03 | 2018-04-10 | 浙江永球科技有限公司 | Vacuum self priming pump with Zhu Xi mechanisms |
CN115419603B (en) * | 2021-05-31 | 2023-11-28 | 浙江日井泵业股份有限公司 | Self-priming pump |
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