JP2002276584A - Submerged pump and check packing thereof - Google Patents
Submerged pump and check packing thereofInfo
- Publication number
- JP2002276584A JP2002276584A JP2001075276A JP2001075276A JP2002276584A JP 2002276584 A JP2002276584 A JP 2002276584A JP 2001075276 A JP2001075276 A JP 2001075276A JP 2001075276 A JP2001075276 A JP 2001075276A JP 2002276584 A JP2002276584 A JP 2002276584A
- Authority
- JP
- Japan
- Prior art keywords
- pump
- tongue
- discharge port
- packing
- fulcrum
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Check Valves (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
【0001】[0001]
【発明の技術分野】本発明は、水中ポンプおよびその逆
止パッキンに関するものである。TECHNICAL FIELD The present invention relates to a submersible pump and its non-return packing.
【0002】[0002]
【従来技術とその問題点】水中ポンプ停止時において、
排水用配管路内の水が逆流すことを防止するため、吐き
出し管路中にボール式逆止弁等の逆流防止機構を設置す
ることは従来から行われている。しかしホースカップリ
ングにゴムホースを嵌着させる型式の水中ポンプでは、
そのような逆流防止機構の設置スペースを確保すること
は極めて困難である。[Prior art and its problems] When the submersible pump is stopped,
In order to prevent the water in the drainage pipe from flowing back, it has been conventionally practiced to install a backflow prevention mechanism such as a ball check valve in the discharge pipe. However, in a submersible pump of the type that fits a rubber hose to the hose coupling,
It is extremely difficult to secure a space for installing such a backflow prevention mechanism.
【0003】また、サクションカバーとストレーナ底板
との間に逆止弁を設けることも提案されている。しかし
超低水位での排水を可能にするためポンプ吸込口の開口
位置を極力低くしたものについては、上記のような位置
に逆止弁を設置しても、その逆止弁を開作動させるため
の上下方向のスペースが確保されないことになる。It has also been proposed to provide a check valve between the suction cover and the strainer bottom plate. However, in order to enable drainage at an ultra-low water level, the pump suction port opening position was set as low as possible, even if a check valve was installed at the above position, the check valve was opened. Is not secured in the vertical direction.
【0004】[0004]
【発明の目的】本発明の目的は、ホースカップリングに
ゴムホースを嵌着させる型式の水中ポンプ、或いは超低
水位での残水処理に供せられる水中ポンプにおいても逆
流防止作用が有効に機能する、水中ポンプおよびその逆
止パッキンを提供することにある。An object of the present invention is to provide a submersible pump of a type in which a rubber hose is fitted to a hose coupling or a submersible pump used for residual water treatment at an extremely low water level. , A submersible pump and its non-return packing.
【0005】[0000]
【発明の構成】本発明に係る水中ポンプは、ポンプ渦巻
室から導出された吐き出し口とホースカップリングまた
は吐き出し管とが逆止パッキンを介して導通するよう吐
き出し口の口周部に逆止パッキンを装着した水中ポンプ
であって、上記逆止パッキンは、周辺部を環状の装着面
に形成した弾性薄板の中央部から上記装着面近くへ亘る
放射状の切込みを施して複数の舌片に分割し、該切込み
の終端部を支点として上反作用を行う可撓部を各舌片が
有するよう構成したものであり、該逆止パッキンの裏面
には各舌片の縁部と密接する棧体を付設し、ポンプ駆動
時には逆止パッキンの各舌片が棧体上から離反して吐き
出し口が開放されポンプ停止時には各舌片の縁部が棧体
上は密接して吐き出し口が閉塞されるよう構成した。ま
た、本発明に係るパッキンは、水中ポンプの吐き出し口
の口周部に装着される逆止パッキンであって、周辺部を
環状の装着面に形成した弾性薄板の中央部から上記装着
面近くへ亘る放射状の切込みを施して複数の舌片に分割
し、且つ各舌片の根元に幅狭の繋がり部を存置するよう
にして前記切込みの終端より円周方向へ移る分岐状の切
込みを施すことにより、該切込みの終端部を支点として
上反作用を行う可撓部と前記繋がり部を支点として上反
作用を行う可撓部とを各舌片が併有するよう構成した。A submersible pump according to the present invention is provided with a non-return packing around a discharge port so that a discharge port led out of a pump volute and a hose coupling or a discharge pipe are conducted through a non-return packing. Wherein the check gasket is divided into a plurality of tongue pieces by making a radial cut from a central portion of an elastic thin plate having a peripheral portion formed on an annular mounting surface to near the mounting surface. Each of the tongues has a flexible portion that performs an upward reaction with the end of the cut as a fulcrum, and a backing member that is in close contact with the edge of each tongue is provided on the back surface of the check packing. When the pump is driven, the tongues of the non-return packing are separated from the support and the discharge port is opened. When the pump is stopped, the edges of the tongues are in close contact with the support and the discharge port is closed. did. Further, the packing according to the present invention is a non-return packing mounted on a peripheral portion of a discharge port of a submersible pump, and a peripheral portion is formed from a central portion of an elastic thin plate formed on an annular mounting surface to near the mounting surface. Dividing into a plurality of tongue pieces by applying a radial cut across the tongue pieces, and making a branch-like notch moving in the circumferential direction from the end of the cut in such a manner that a narrow connection portion is provided at the base of each tongue piece. Thus, each tongue piece is configured to have a flexible portion that performs an upward reaction with the end portion of the cut as a fulcrum and a flexible portion that performs an upward reaction with the connecting portion as a fulcrum.
【0006】[0006]
【実施例】以下実施例の図面により説明をする。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments will be described below with reference to the drawings.
【0007】1はポンプ渦流室、2はポンプ渦流室1の
下底部を構成する吸込カバーであって、中央部に吸込口
3が穿設されている。4はポンプ渦流室1から導出され
た吐き出し口、5は後記棧体6および逆止パッキン7を
介して吐き出し口4に立設されるホースカップリングま
たは吐き出し管である。吐き出し口4の口周部に装着さ
れる逆止パッキンはゴム等の弾性薄板で作られており、
周辺部を環状の装着面に形成し、中央部から上記装着面
近8の近くまで達する放射状の切込み10・・10を施
して複数の舌片11・・11に分割し、各舌片11・・
11の根元に幅狭の繋がり部12を存置するようにして
前記切込み10の終端より円周方向へ移る分岐状の切込
み13,13を施すことにより、該切込み13,13の
終端部13e,13eを支点として上反作用を行う可撓
部11a,11aと、前記繋がり部12を支点として上
反作用を行う可撓部11bとを各舌片11・・11が併
有するよう構成されている。上記逆止パッキン7の裏面
に付設される棧体は、上記放射状の切込み10および分
岐状切込み13に沿って各舌片11・・11の縁部と密
接し、且つ逆止パッキン7の環状装着面を支承し得るよ
う形成されている。9締着用ボルトである。Reference numeral 1 denotes a pump swirl chamber, and reference numeral 2 denotes a suction cover constituting a lower bottom portion of the pump swirl chamber 1, and a suction port 3 is formed at a central portion. Reference numeral 4 denotes a discharge port derived from the pump swirl chamber 1, and reference numeral 5 denotes a hose coupling or a discharge pipe which is provided upright at the discharge port 4 via a later-described support member 6 and a check packing 7. The non-return packing attached to the periphery of the discharge port 4 is made of an elastic thin plate such as rubber.
The peripheral portion is formed in an annular mounting surface, and radial cuts 10... 10 extending from the central portion to near the mounting surface 8 are made to divide into a plurality of tongue pieces 11.・
By making the cuts 13, 13 extending in the circumferential direction from the end of the cut 10 in the circumferential direction from the end of the cut 10 so as to leave the narrow connecting portion 12 at the root of 11, the end 13 e of the cut 13, 13 e Each of the tongue pieces 11,... 11 has a flexible portion 11a, 11a that performs an upward reaction with the supporting point as a fulcrum, and a flexible portion 11b that performs an upward reaction with the connecting portion 12 as a fulcrum. The supporting member attached to the back surface of the check packing 7 is in close contact with the edges of the tongues 11 along the radial cuts 10 and the branch cuts 13 and the annular mounting of the check packing 7. It is formed so that a surface can be supported. 9 fastening bolts.
【0008】[0008]
【作用】ポンプ停止時には図1に示すよう各舌片11・
・11の縁部が棧体6上に密接しているため、吐き出し
口4とホースカップリング(または吐き出し管)5とは導
通を遮断された状態にある。しかしポンプが起動すると
各舌片11・・11は上反作用を起こして図2に示すよ
う棧体6から離反し、吐き出し口4とホースカップリン
グ(または吐き出し管)5とは導通状態となり、吸込口3
より吸込まれた水はポンプ渦流室1内を経て吐き出し口
4から排出される。上述した各舌片11・・11の離反
作用は、放射状切込み10の終端部を支点とする上反作
用で吐き出し口4を開放されるが、逆止パッキン7を図
3に示すように形成しておけば、分岐状の切込み13,
13の終端部13e,13eを支点とす可撓部11a,
11aの上反作用と、繋がり部12を支点とする可撓部
11bの上反作用とが相俟って行われることになり、吐
き出し口4の開放機能を更に高めることができる。そし
て排水の完了水位でポンプ運転が停止すると、排水用配
管路内の戻り水の圧力により各舌片11・・11は図1
に示すよう棧体6上へ密接して吐き出し口4を閉塞する
ため、逆流防止機能が働くことになる。[Action] is when the pump is stopped as shown in FIG. 1 each tongue 11 -
Since the edge of 11 is in close contact with the support 6, the discharge port 4 and the hose coupling (or discharge pipe) 5 are in a state where conduction is cut off. However, when the pump is started, the tongue pieces 11,... 11 cause an upward reaction, separate from the support body 6 as shown in FIG. 2, and the discharge port 4 and the hose coupling (or discharge pipe) 5 are brought into conduction, so that the suction Mouth 3
The water that is sucked in is discharged through the pump swirl chamber 1
Emitted from 4. The tongue pieces 11 are separated from each other by the upward reaction with the end of the radial cut 10 as a fulcrum. The checkout gasket 7 is formed as shown in FIG. If it cuts, the branch-like cut 13,
13, flexible portions 11a having the end portions 13e, 13e as fulcrums,
The upward reaction of 11a and the upward reaction of the flexible portion 11b with the connecting portion 12 as a fulcrum are performed together, and the opening function of the discharge port 4 can be further enhanced. When the pump operation is stopped at the completion water level of the drainage, the pressure of the return water in the drainage pipe line causes the tongues 11.
As shown in (5), since the discharge port 4 is closed closely on the support body 6, the backflow preventing function works.
【0009】[0009]
【発明の効果】本発明によれば、従来の逆流防止気機構
の設置スペース有しない水中ポンプにおいても逆止弁が
装着でき、ポンプ停止時における排水用配管路内の水が
逆流することを確実に防止し得られるである。According to the present invention, a check valve can be installed even in a conventional submersible pump which does not have a space for installing a backflow prevention air mechanism, and it is ensured that water in the drainage pipe line flows backward when the pump is stopped. Can be prevented.
【図1】本発明水中ポンプの停止時における要部縦断側
面図である。FIG. 1 is a vertical sectional side view of a main part when a submersible pump of the present invention is stopped.
【図2】本発明水中ポンプの駆動時における要部縦断側
面図である。FIG. 2 is a vertical sectional side view of a main part when the submersible pump of the present invention is driven.
【図3】本発明逆止パッキンの平面図である。FIG. 3 is a plan view of the check packing of the present invention.
【図4】本発明逆止パッキンに添設される棧体の平面図
である。FIG. 4 is a plan view of a support member attached to the non-return packing according to the present invention.
【図5】本発明逆止パッキンの裏面に棧体を添設させた
状態における平面図である。FIG. 5 is a plan view of the check packing of the present invention in a state in which a backing member is attached to the back surface.
【図6】本発明逆止パッキンの舌片上反作動時における
棧体との関係を示した要部縦断側面図である。FIG. 6 is a vertical sectional side view showing the relationship between the check packing and the tongue when the tongue piece is upwardly actuated.
1 ポンプ渦流室 2 吸込カバー 3 吸込口 4 吐き出し口 5 ホースカップリングまたは吐き出し管 6 棧体 7 逆止パッキン 8 環状の装着面 10 放射状の切込み 11 舌片 11a 分岐状の切込みの終端部を支点として上反作
用を行う可撓部 11b 繋がり部を支点として上反作用を行う可撓部 12 繋がり部 13 分岐状の切込み 13e 分岐状の切込みの終端部DESCRIPTION OF REFERENCE NUMERALS 1 pump swirl chamber 2 suction cover 3 suction port 4 discharge port 5 hose coupling or discharge pipe 6 support member 7 check packing 8 annular mounting surface 10 radial cut 11 tongue piece 11a branch end of cut-off Flexible part 11b that performs an upward reaction 11b Flexible part that performs an upward reaction with the connecting part as a fulcrum 12 Connecting part 13 Branch cut 13e End of branch cut
Claims (2)
とホースカップリングまたは吐き出し管とが逆止パッキ
ンを介して導通するよう吐き出し口の口周部に逆止パッ
キンを装着した水中ポンプであって、上記逆止パッキン
は、周辺部を環状の装着面に形成した弾性薄板の中央部
から上記装着面近くへ亘る放射状の切込みを施して複数
の舌片に分割し、該切込みの終端部を支点として上反作
用を行う可撓部を各舌片が有するよう構成したものであ
り、該逆止パッキンの裏面には各舌片の縁部と密接する
棧体を付設し、ポンプ駆動時には逆止パッキンの各舌片
が棧体上から離反して吐き出し口が開放されポンプ停止
時には各舌片の縁部が棧体上へ密接して吐き出し口が閉
塞されるよう構成したことを特徴とする、水中ポンプ。1. A submersible pump having a non-return gasket mounted around a discharge port so that a discharge port led out of a pump swirl chamber and a hose coupling or a discharge pipe are conducted through a non-return gasket. The above-mentioned non-return packing is divided into a plurality of tongue pieces by making a radial cut from a central portion of an elastic thin plate having a peripheral portion formed on an annular mounting surface to a portion near the mounting surface, and a fulcrum is provided at the end of the cut. Each of the tongues has a flexible portion that performs an upward reaction, and a backing member is provided on the back surface of the check packing so as to be in close contact with the edge of each tongue. Wherein each of the tongues is separated from the support and the discharge port is opened, and when the pump is stopped, the edge of each tongue is in close contact with the support and the discharge port is closed. pump.
される逆止パッキンであって、周辺部を環状の装着面に
形成した弾性薄板の中央部から上記装着面近くへ亘る放
射状の切込みを施して複数の舌片に分割し、且つ各舌片
の根元に幅狭の繋がり部を存置するようにして前記切込
みの終端より円周方向へ移る分岐状の切込みを施すこと
により、該切込みの終端部を支点として上反作用を行う
可撓部と前記繋がり部を支点として上反作用を行う可撓
部とを各舌片が併有するよう構成したことを特徴とす
る、水中ポンプの逆止パッキン。2. A non-return gasket mounted around a discharge port of a submersible pump, wherein a radial cut from a central portion of an elastic thin plate having a peripheral portion formed on an annular mounting surface to near the mounting surface. To form a plurality of tongue pieces, and to form a branch-like notch that moves in the circumferential direction from the end of the notch so as to leave a narrow connecting portion at the base of each tongue piece. Non-return packing of a submersible pump, characterized in that each tongue has a flexible portion that performs an upward reaction with the end portion of the fulcrum as a fulcrum and a flexible portion that performs an upward reaction with the connecting portion as a fulcrum. .
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001075276A JP4868376B2 (en) | 2001-03-16 | 2001-03-16 | Submersible pump and its non-return packing |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001075276A JP4868376B2 (en) | 2001-03-16 | 2001-03-16 | Submersible pump and its non-return packing |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2002276584A true JP2002276584A (en) | 2002-09-25 |
JP4868376B2 JP4868376B2 (en) | 2012-02-01 |
Family
ID=18932381
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2001075276A Expired - Lifetime JP4868376B2 (en) | 2001-03-16 | 2001-03-16 | Submersible pump and its non-return packing |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP4868376B2 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009281488A (en) * | 2008-05-22 | 2009-12-03 | Kayaba Ind Co Ltd | Valve seat part structure |
JP2011504786A (en) * | 2007-11-27 | 2011-02-17 | スリーエム イノベイティブ プロパティズ カンパニー | Face mask with one-way valve |
CN104179710A (en) * | 2014-07-31 | 2014-12-03 | 苏州淮通电气有限公司 | Submersible pump |
CN112942523A (en) * | 2019-11-26 | 2021-06-11 | 梁宏荣 | Liquid discharge device |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4843766Y1 (en) * | 1969-01-08 | 1973-12-17 | ||
JPS5442034A (en) * | 1977-07-01 | 1979-04-03 | Enfo Grundlagen Forschungs Ag | Closing foil for valve |
JPS57157871A (en) * | 1981-03-24 | 1982-09-29 | Takaoka Seisakusho:Kk | Check valve |
JPS6123380A (en) * | 1984-07-11 | 1986-01-31 | Matsushita Electric Ind Co Ltd | Semiconductor light emitting element |
-
2001
- 2001-03-16 JP JP2001075276A patent/JP4868376B2/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4843766Y1 (en) * | 1969-01-08 | 1973-12-17 | ||
JPS5442034A (en) * | 1977-07-01 | 1979-04-03 | Enfo Grundlagen Forschungs Ag | Closing foil for valve |
JPS57157871A (en) * | 1981-03-24 | 1982-09-29 | Takaoka Seisakusho:Kk | Check valve |
JPS6123380A (en) * | 1984-07-11 | 1986-01-31 | Matsushita Electric Ind Co Ltd | Semiconductor light emitting element |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011504786A (en) * | 2007-11-27 | 2011-02-17 | スリーエム イノベイティブ プロパティズ カンパニー | Face mask with one-way valve |
US8757156B2 (en) | 2007-11-27 | 2014-06-24 | 3M Innovative Properties Company | Face mask with unidirectional multi-flap valve |
JP2009281488A (en) * | 2008-05-22 | 2009-12-03 | Kayaba Ind Co Ltd | Valve seat part structure |
CN104179710A (en) * | 2014-07-31 | 2014-12-03 | 苏州淮通电气有限公司 | Submersible pump |
CN112942523A (en) * | 2019-11-26 | 2021-06-11 | 梁宏荣 | Liquid discharge device |
Also Published As
Publication number | Publication date |
---|---|
JP4868376B2 (en) | 2012-02-01 |
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