JP3296372B2 - underwater pump - Google Patents
underwater pumpInfo
- Publication number
- JP3296372B2 JP3296372B2 JP07171593A JP7171593A JP3296372B2 JP 3296372 B2 JP3296372 B2 JP 3296372B2 JP 07171593 A JP07171593 A JP 07171593A JP 7171593 A JP7171593 A JP 7171593A JP 3296372 B2 JP3296372 B2 JP 3296372B2
- Authority
- JP
- Japan
- Prior art keywords
- guide
- valve seat
- stopper
- submersible pump
- discharge port
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Check Valves (AREA)
- Details Of Reciprocating Pumps (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
【０００１】[0001]
【産業上の利用分野】この発明は逆止弁を備えた水中ポ
ンプに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a submersible pump having a check valve.
【０００２】[0002]
【従来の技術】図８は例えば実公昭６２−２３１２号公
報に示された従来の水中ポンプを示す断面図であり、１
はモータ軸２に結合された羽根、３は吐出ケーシング、
４はこの吐出ケーシング３に結合された吐出管、５はこ
の吐出管４と吐出ケーシング３とに跨がって装着された
逆止弁座であり、Ｏリング６で吐出管４とは封止されて
いる。７はボール状の弁体であり、上方の移動量は吐出
管４の内周に等間隔で複数個形成されたリブ状のストッ
パ４ａで規制されている。2. Description of the Related Art FIG. 8 is a sectional view showing a conventional submersible pump disclosed in Japanese Utility Model Publication No. 62-2312, for example.
Is a blade connected to the motor shaft 2, 3 is a discharge casing,
Reference numeral 4 denotes a discharge pipe connected to the discharge casing 3, and reference numeral 5 denotes a check valve seat mounted across the discharge pipe 4 and the discharge casing 3. The check valve seat is sealed with the discharge pipe 4 by an O-ring 6. Have been. Reference numeral 7 denotes a ball-shaped valve body, and the upward movement amount is regulated by a plurality of rib-shaped stoppers 4 a formed at equal intervals on the inner periphery of the discharge pipe 4.
【０００３】次に動作について説明する。水中ポンプ運
転停止中は、吐出管４内部は自然水頭による正圧力が生
じるので、弁体７は自重も加味して、弁座５のシール面
に密着し、吐出ケーシング３内への水の逆流を防止す
る。次に、水中ポンプが運転すると、羽根２のポンプ作
用により吐出ケーシング３内の正圧が上昇し、吐出管４
内の自然水頭等による正圧より高くなると、弁体７は上
昇し、水が吐出ケーシング３から弁座５の開口を介して
矢印方向に吐出管４内に連続的に流入して、吐出され
る。Next, the operation will be described. While the operation of the submersible pump is stopped, a positive pressure is generated inside the discharge pipe 4 due to the natural head, so that the valve body 7 adheres to the sealing surface of the valve seat 5 in consideration of its own weight, and the water flows backward into the discharge casing 3. To prevent Next, when the submersible pump is operated, the positive pressure in the discharge casing 3 increases due to the pumping action of the blades 2 and the discharge pipe 4
When the pressure becomes higher than the positive pressure due to the natural water head inside, the valve body 7 rises, and water flows continuously from the discharge casing 3 through the opening of the valve seat 5 into the discharge pipe 4 in the direction of the arrow, and is discharged. You.
【０００４】[0004]
【発明が解決しようとする課題】従来の逆流防止装置は
以上のように構成されているので、水中ポンプ運転中、
逆流防止弁は水の流入量が多い場合は損失水頭が大きく
なり、弁体７と弁座５間の水頭と、弁体７と吐出管４側
の水頭差が一定値以上になると、弁体７は、ストッパー
４ａに接触する迄上昇し、その位置で静止するが、流入
水量が少なくなっていくと水頭差も小さくなるので、弁
体７は下降し、吐出管４内を浮遊する状態となる。流入
水は、ポンプの回転によりうず巻状の流れになっている
為、逆流防止弁にも回転力が伝達され吐出管４の内壁に
断続的に接触するので、振動や騒音の発生、また、長期
的には、接触磨耗により逆流防止機能を失う（短寿命）
などの問題点があった。Since the conventional backflow prevention device is configured as described above, during operation of the submersible pump,
The check valve has a large head loss when the inflow of water is large, and when the difference between the head between the valve body 7 and the valve seat 5 and the head between the valve body 7 and the discharge pipe 4 becomes a certain value or more, the valve head becomes 7 rises until it comes into contact with the stopper 4a, and stops at that position. However, as the inflow of water decreases, the head difference also decreases, so that the valve element 7 descends and floats in the discharge pipe 4. Become. Since the inflow water has a spiral flow due to the rotation of the pump, the rotational force is also transmitted to the check valve and intermittently comes into contact with the inner wall of the discharge pipe 4, so that vibration and noise are generated. Long-term loss of backflow prevention function due to contact wear (short life)
There were problems such as.
【０００５】この発明は上記のような問題点を解消する
為になされたもので、水中ポンプ運転中、振動、騒音が
きわめて低く、且つ長寿命の水中ポンプを得ることを目
的としている。The present invention has been made to solve the above-mentioned problems, and has as its object to obtain a submersible pump having a very low vibration and noise and a long life during operation of the submersible pump.
【０００６】[0006]
【課題を解決するための手段】この発明に係る水中ポン
プは、上部に吐出口を設けたポンプ部分、上記吐出口内
に配置され、弁座と離接するボールを有する逆止弁、上
記吐出口内に設けられ、上記ボールの上方への移動量を
規制するストッパを備えた水中ポンプにおいて、上記吐
出口内における上記ストッパと上記弁座との間には、内
周部が上記ボールの外周との間に第１の空間部を形成し
たガイドを設け、このガイドには、径方向に開口した開
口部を円周上に複数個配列し、上記ガイドの外周部には
上記各開口部を介して上記第１の空間部と上記吐出口を
連通する第２の空間部が形成されているものである。A submersible pump according to the present invention includes a pump portion having a discharge port provided on an upper portion thereof, a check valve having a ball disposed in the discharge port and separated from and in contact with a valve seat. In a submersible pump provided with a stopper that regulates the upward movement amount of the ball, an inner peripheral portion is located between the stopper and the valve seat in the discharge port, and an inner peripheral portion is located between the outer periphery of the ball. A guide having a first space portion is provided, and a plurality of radially-opened openings are arranged on the circumference of the guide.
The first space and the discharge port are connected through the respective openings.
A second space portion communicating with the second space portion is formed.
【０００７】また、上記ガイドは上記弁座の上部に一体
に形成されて上記ストッパ側に外周部直径寸法を上記弁
座側の外周部直径寸法より小さくすると共に、上記開口
部を上記ストッパ側に形成したものである。The guide is formed integrally with the upper portion of the valve seat so that the outer peripheral portion on the stopper side is smaller in diameter than the outer peripheral portion on the valve seat side, and the opening is formed on the stopper side. It is formed.
【０００８】また、上記ガイドは上記弁座の上部に一体
に形成し、その外周部は上記ストッパ側の外周部直径寸
法を上記弁座側の外周部直径寸法よりも小としたテーパ
ー状に構成し、上記開口部を上記ストッパ側に形成した
ものである。The guide is formed integrally with the upper portion of the valve seat, and its outer peripheral portion is formed in a tapered shape in which the outer peripheral diameter of the stopper is smaller than the outer peripheral diameter of the valve seat. The opening is formed on the stopper side.
【０００９】また、上記ストッパをプラスチックで構成
して円筒部と、この円筒部の上部内周部に形成された位
置決め部とを設け、上記円筒部内にプラスチック製の上
記ガイドとプラスチック製の上記弁座を配置し、上記円
筒部で上記吐出口内周の一部を水と遮断すると共にその
遮断部分を別体としたものである。Further, the stopper is made of plastic, and a cylindrical portion and a positioning portion formed on an upper inner peripheral portion of the cylindrical portion are provided. The plastic guide and the plastic valve are provided in the cylindrical portion. A seat is disposed, a part of the inner periphery of the discharge port is blocked from water by the cylindrical portion, and the cutoff portion is formed separately.
【００１０】また、ガイドの開口部は径方向外側に向っ
て拡開したものである。The opening of the guide is expanded toward the outside in the radial direction.
【００１１】[0011]
【作用】この発明における水中ポンプは、水中ポンプ運
転中ポンプの回転により流入水がうず巻状の流れとな
り、弁座の開口孔を通り逆流防止弁に向うが、弁体の外
側に円筒形で上部の円周に複数個の開口部を設けてお
り、この開口部の内径と弁体の外径の隙間を小さくする
ことで、少流入水時の流速を速めて、損失水頭を高める
ことにより弁体が上昇し、ストッパーに接触し、静止す
る。また、極少流入水時でもガイドに設けた複数個の開
口部を通過させる時、うず巻き状の流れが整流される
為、弁体は回転せず、また、整流水は開口部の外方向に
流れるので、弁体はほぼ中央に安定して浮遊する。In the submersible pump according to the present invention, the inflow water flows in a spiral shape by the rotation of the pump during the operation of the submersible pump, passes through the opening of the valve seat to the check valve, but has a cylindrical shape outside the valve body. A plurality of openings are provided in the upper circumference, and by reducing the gap between the inner diameter of this opening and the outer diameter of the valve body, the flow velocity at the time of small inflow water is increased, and the head loss is increased. The valve body rises, contacts the stopper, and comes to rest. In addition, even when the amount of inflow water is extremely small, when passing through a plurality of openings provided in the guide, the spiral flow is rectified, so that the valve body does not rotate, and the rectified water flows outward of the openings. Therefore, the valve element floats stably at almost the center.
【００１２】[0012]
実施例１．図１はこの発明の一実施例を示す断面図であ
り、１〜４と６〜７は従来装置と全く同一のものであ
る。５０は弁体７の外周と第１の空間部８を介して上方
へ突出したガイド５０ａを有した弁座であり、図２の様
にガイド５０ａには複数個の切欠き状の開口部５０ｂが
形成されている。このガイド５０ａと吐出管４の内周と
の間には第２の空間部９が形成されている。Embodiment 1 FIG. FIG. 1 is a sectional view showing an embodiment of the present invention, wherein reference numerals 1 to 4 and 6 to 7 are exactly the same as those of the conventional apparatus. Reference numeral 50 denotes a valve seat having a guide 50a protruding upward through the outer periphery of the valve body 7 and the first space portion 8, and a plurality of notched openings 50b are formed in the guide 50a as shown in FIG. Are formed. A second space 9 is formed between the guide 50a and the inner circumference of the discharge pipe 4.
【００１３】前記のように構成されたものにおいて、水
中ポンプ運転停止中は、吐出管４内部は自然水頭による
正圧力が生じるので、弁体７は自重も加味して、弁座５
０のシール面に密着し、吐出ケーシング３内への水の逆
流を防止する。次に、水中ポンプが運転すると、ポンプ
作用により吐出ケーシング３内への圧力が上昇し、吐出
管４内の自然水頭等による正圧より高くなると、弁体７
は上昇し、弁座５０の開口より水が矢印方向に吐出管４
内に連続的に流入する。弁体７は少水量でもストッパ４
ａに接触して静止し、極少水量になっても安定した状態
で浮遊することになる。ところで、吐出管４内周とガイ
ド５０ａの間の第２の空間部９は、開口部５０ｂからの
流入水の流れ方向を、更に、周囲に分散させるため、羽
根の回転によるうず巻状の流れが、整流されることにな
る。つまり、弁体７と弁座５０との間から流入した流入
水は、まず、ガイド５０ａの開口部５０ｂに分流され
て、うず巻状の流れが分断され、更に、第２の空間部９
で水通路面積が急拡大し、通水損失抵抗が軽減し、確実
に整流される。When the submersible pump is stopped, a positive pressure is generated inside the discharge pipe 4 due to the natural water head, so that the valve body 7 takes into account its own weight and the valve seat 5
0 to prevent backflow of water into the discharge casing 3. Next, when the submersible pump is operated, the pressure into the discharge casing 3 increases due to the pump action, and when the pressure becomes higher than the positive pressure due to the natural head or the like in the discharge pipe 4, the valve 7
Rises, and water flows from the opening of the valve seat 50 in the direction of the arrow in the discharge pipe 4.
Flows continuously into The valve body 7 has a stopper 4
a and comes to rest in a stable state even when the amount of water becomes extremely small. By the way, the second space 9 between the inner circumference of the discharge pipe 4 and the guide 50a has a spiral flow caused by the rotation of the blade to further disperse the flow direction of the inflow water from the opening 50b to the periphery. Will be rectified. In other words, the inflow water flowing from between the valve element 7 and the valve seat 50 is first divided into the opening 50b of the guide 50a, the spiral flow is divided, and the second space 9
As a result, the area of the water passage is rapidly increased, the resistance to water loss is reduced, and the flow is reliably rectified.
【００１４】実施例２．実施例１ではガイド５０ａが上
方で突出しているが、図３及び図４のようにガイド５０
ａの下部に吐出管４との嵌合部を形成する厚肉部５０ｃ
を形成することにより、ガイド５０ａの強度を向上させ
ることができる。Embodiment 2 FIG. In the first embodiment, the guide 50a protrudes upward, but as shown in FIGS.
a thick portion 50c forming a fitting portion with the discharge pipe 4 below
By forming, the strength of the guide 50a can be improved.
【００１５】実施例３．実施例２ではガイド５０ａが厚
肉部５０ｃから同一厚さで突出しているが、図５のよう
に厚肉部５０ｃの外周部から傾斜して小径とするテーパ
部５０ｄを設けることにより、弁座５０を吐出管４へ容
易に挿入できることになる。Embodiment 3 FIG. In the second embodiment, the guide 50a protrudes from the thick portion 50c with the same thickness. However, as shown in FIG. 5, the valve seat is formed by providing a tapered portion 50d having a small diameter inclined from the outer peripheral portion of the thick portion 50c. 50 can be easily inserted into the discharge pipe 4.
【００１６】実施例４．図６は吐出管を金属製の第１の
吐出管４０とプラスチック製の第２の吐出管４１とに別
体で構成し、例えば、ボルト（図示せず）等で結合する
ものである。図において、４１ａは第１の吐出管４０内
に嵌合されたストッパであり、筒状部４１ｂと連続して
いる。１０は第１の吐出管４０とストッパ４１ａを封止
するＯリングである。この構成では吐出管のうち、第２
の吐出管４１部分の錆の発生を防止でき、弁座５のつま
りを防止できる。Embodiment 4 FIG. FIG. 6 shows a structure in which the discharge pipe is formed separately from the first discharge pipe 40 made of metal and the second discharge pipe 41 made of plastic, and connected with, for example, bolts (not shown). In the figure, reference numeral 41a denotes a stopper fitted in the first discharge pipe 40, which is continuous with the cylindrical portion 41b. Reference numeral 10 denotes an O-ring that seals the first discharge pipe 40 and the stopper 41a. In this configuration, the second of the discharge pipes
Of the discharge pipe 41 can be prevented, and the valve seat 5 can be prevented from clogging.
【００１７】実施例５．図７は弁座５０の開口部５０ｂ
の形状として径方向外周に向って拡開部５０ｅを設けた
ものであり、水通路面積が開口部５０ｂで、一層、急拡
大し、流入水の整流が効果的に実施される。Embodiment 5 FIG. FIG. 7 shows the opening 50b of the valve seat 50.
In the shape of, a widened portion 50e is provided toward the outer periphery in the radial direction, and the area of the water passage is increased more rapidly by the opening 50b, so that the rectification of the inflow water is effectively performed.
【００１８】[0018]
【発明の効果】以上のように、この発明によれば吐出口
内におけるストッパと弁座との間に、内周部がボールの
外周との間に第１の空間部を形成したガイドを設け、こ
のガイドには、径方向に開口した開口部を円周上に複数
個配列し、ガイドの外周部には各開口部を介して第１の
空間部と吐出口を連通する第２の空間部を形成したの
で、流入水はガイドの開口部で分流されてうず巻状の流
れが分断され、さらに、第２の空間部で水通路面積が急
拡大することにより、通水損失抵抗が軽減し、確実に整
流されるため、ポンプ運転中における弁体の回転・接触
等による振動・騒音を極めて低くすることができ、か
つ、長寿命のものが得られる効果がある。As described above, according to the present invention, the discharge port
Between the stopper and the valve seat inside the ball
A guide having a first space formed between the outer periphery and the outer periphery is provided.
Guides have multiple radial openings around the circumference.
The guides are arranged on the outer periphery of the guide through the respective openings.
The second space that connects the space and the discharge port is formed
And the inflow water is split at the guide opening to form a spiral
And the water passage area is suddenly increased in the second space.
The expansion reduces water flow loss resistance and ensures
Because of the flow, vibration and noise due to rotation and contact of the valve body during operation of the pump can be extremely reduced, and a long life can be obtained.
【図１】この発明の一実施例を示す断面側面図である。FIG. 1 is a sectional side view showing an embodiment of the present invention.
【図２】この発明の要部を示す斜視図である。FIG. 2 is a perspective view showing a main part of the present invention.
【図３】この発明の第２の実施例を示す断面側面図であ
る。FIG. 3 is a sectional side view showing a second embodiment of the present invention.
【図４】この発明の要部を示す斜視図である。FIG. 4 is a perspective view showing a main part of the present invention.
【図５】この発明の第３の実施例を示す断面側面図であ
る。FIG. 5 is a sectional side view showing a third embodiment of the present invention.
【図６】この発明の第４の実施例を示す断面側面図であ
る。FIG. 6 is a sectional side view showing a fourth embodiment of the present invention.
【図７】この発明の第５の実施例を示す要部平面断面図
である。FIG. 7 is a plan sectional view of a main part showing a fifth embodiment of the present invention.
【図８】従来装置を示す断面側面図である。FIG. 8 is a sectional side view showing a conventional device.
４ 吐出口 ４ａ ストッパ ７ 弁体 ８ 第１の空間部 ９ 第２の空間部 ４０ 第１の吐出管 ４１ 第２の吐出管 ４１ａ ストッパ ４１ｂ 円筒部 ５０ 弁座 ５０ａ ガイド ５０ｂ 開口部 ５０ｃ 厚肉部 ５０ｄ テーパ部 ５０ｅ 拡開部 Reference Signs List 4 discharge port 4a stopper 7 valve body 8 first space 9 second space 40 first discharge pipe 41 second discharge pipe 41a stopper 41b cylindrical part 50 valve seat 50a guide 50b opening 50c thick part 50d Taper part 50e Expanding part
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭50−156722（ＪＰ，Ａ) 実開 昭56−113273（ＪＰ，Ｕ) 実開 昭62−133066（ＪＰ，Ｕ) 実公 昭62−2312（ＪＰ，Ｙ１) (58)調査した分野(Int.Cl.7，ＤＢ名) F04D 13/08 F04B 53/10 F16K 15/04 ──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-50-156722 (JP, A) JP-A-56-113273 (JP, U) JP-A-62-133066 (JP, U) 2312 (JP, Y1) (58) Field surveyed (Int. Cl. 7 , DB name) F04D 13/08 F04B 53/10 F16K 15/04
Claims (5)
吐出口内に配置され、弁座と離接するボールを有する逆
止弁、上記吐出口内に設けられ、上記ボールの上方への
移動量を規制するストッパを備えた水中ポンプにおい
て、上記吐出口内における上記ストッパと上記弁座との
間には、内周部が上記ボールの外周との間に第１の空間
部を形成したガイドを設け、このガイドには、径方向に
開口した開口部を円周上に複数個配列し、上記ガイドの
外周部には上記各開口部を介して上記第１の空間部と上
記吐出口を連通する第２の空間部が形成されていること
を特徴とする水中ポンプ。1. A pump portion provided with a discharge port at an upper portion, a check valve disposed in the discharge port and having a ball which comes into contact with and separates from a valve seat, and a check valve provided in the discharge port, the amount of upward movement of the ball. In a submersible pump having a stopper that regulates, between the stopper and the valve seat in the discharge port, an inner peripheral portion is provided with a guide that forms a first space between the outer periphery of the ball, this guide plurality arranged an opening which is open in the radial direction on the circumference, the guide
The outer peripheral portion is connected to the first space through the respective openings.
A submersible pump, wherein a second space portion communicating with the discharge port is formed.
成されて上記ストッパ側に外周部直径寸法を上記弁座側
の外周部直径寸法より小さくすると共に、上記開口部を
上記ストッパ側に形成したことを特徴とする請求項第１
項記載の水中ポンプ。2. The guide is formed integrally with an upper portion of the valve seat so that an outer peripheral diameter on the stopper side is smaller than an outer peripheral diameter on the valve seat side, and the opening is formed on the stopper side. 2. The method according to claim 1, wherein
Submersible pump according to the item.
成し、その外周部は上記ストッパ側の外周部直径寸法を
上記弁座側の外周部直径寸法よりも小としたテーパー状
に構成し、上記開口部を上記ストッパ側に形成したこと
を特徴とする請求項第１項記載の水中ポンプ。3. The guide is formed integrally with the upper part of the valve seat, and the outer peripheral portion is formed in a tapered shape in which the outer peripheral diameter on the stopper side is smaller than the outer peripheral diameter on the valve seat side. 2. The submersible pump according to claim 1, wherein said opening is formed on said stopper side.
筒部と、この円筒部の上部内周部に形成された位置決め
部とで形成し、上記円筒部内にプラスチック製の上部ガ
イドとプラスチック製の上記弁座を配置し、上記円筒部
で上記吐出口内周の一部を水と遮断すると共にその遮断
部分を別体としたことを特徴とする請求項第１項記載の
水中ポンプ。4. The stopper is formed of a cylindrical portion made of plastic and a positioning portion formed on an upper inner peripheral portion of the cylindrical portion. An upper guide made of plastic and the valve seat made of plastic are provided in the cylindrical portion. 2. The submersible pump according to claim 1, wherein a part of the inner periphery of the discharge port is cut off from the water by the cylindrical part, and the cut off part is formed separately.
て拡開したことを特徴とする請求項第１項記載の水中ポ
ンプ。5. The submersible pump according to claim 1, wherein the opening of the guide expands radially outward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07171593A JP3296372B2 (en) | 1993-03-30 | 1993-03-30 | underwater pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07171593A JP3296372B2 (en) | 1993-03-30 | 1993-03-30 | underwater pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06280781A JPH06280781A (en) | 1994-10-04 |
| JP3296372B2 true JP3296372B2 (en) | 2002-06-24 |
Family
ID=13468508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP07171593A Expired - Fee Related JP3296372B2 (en) | 1993-03-30 | 1993-03-30 | underwater pump |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3296372B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7819132B2 (en) | 2004-11-24 | 2010-10-26 | Continental Automotive Systems Us, Inc. | Pressure regulator with ceramic valve element |
| KR100902449B1 (en) * | 2004-12-01 | 2009-06-11 | 콘티넨탈 오토모티브 시스템즈 유에스, 인코포레이티드 | Pressure regulator with ceramic valve element |
| DE102010041300A1 (en) | 2010-09-24 | 2012-03-29 | Robert Bosch Gmbh | Valve for controlling fluids |
| KR200484932Y1 (en) * | 2017-03-24 | 2017-12-01 | 차광성 | Back draft valve apparatus for washing suplier of Toilet Bowl |
-
1993
- 1993-03-30 JP JP07171593A patent/JP3296372B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06280781A (en) | 1994-10-04 |
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