JPH0746792Y2 - Canned motor pump - Google Patents
Canned motor pumpInfo
- Publication number
- JPH0746792Y2 JPH0746792Y2 JP1989079517U JP7951789U JPH0746792Y2 JP H0746792 Y2 JPH0746792 Y2 JP H0746792Y2 JP 1989079517 U JP1989079517 U JP 1989079517U JP 7951789 U JP7951789 U JP 7951789U JP H0746792 Y2 JPH0746792 Y2 JP H0746792Y2
- Authority
- JP
- Japan
- Prior art keywords
- chamber
- pump
- bearing
- motor
- bracket
- 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 - Lifetime
Links
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- Structures Of Non-Positive Displacement Pumps (AREA)
Description
【考案の詳細な説明】 〔産業上の利用分野〕 本考案は、固定子鉄心をステンレス鋼等に薄い耐食性の
キヤン（缶）で密閉して液から絶縁すると共に、回転子
も同様に薄いキヤンで包むようにしたキヤンドモータポ
ンプに関し、特に軸端にオーバハングされた羽根車を支
持する液中にある二つの軸受の潤滑及びモータ冷却水
を、ポンプ室からブラケツト、固定子キヤン内側、反負
荷側軸受を通り、羽根車入口へ循環させるようにしたキ
ヤンドモータポンプに関し、漏洩防止装置を不要とする
広汎な用途に用いられる。[Detailed Description of the Invention] [Industrial field of application] The present invention is to seal the stator core with stainless steel or the like with a thin corrosion-resistant can (can) to insulate it from the liquid, and also for the rotor to use a thin can. A canned motor pump that is wrapped in a pump, especially lubrication of two bearings in the liquid that supports the impeller overhung at the shaft end and motor cooling water from the pump chamber to the bracket, the inside of the stator can, and the anti-load side. A canned motor pump that is circulated to the impeller inlet through a bearing, and is used for a wide range of applications that do not require a leakage prevention device.
従来、この種のキヤンドモータポンプは、第２図に示す
ように、モータフレーム１の内部に固定された固定子２
は、その内側がステンレス鋼等の薄い耐食性のキヤン３
によつてロータ室と隔離されており、一方、主軸４に取
付けられた回転子５も、同様のキヤンで包まれ、これら
固定子内側キヤン３と回転子５との間に細隙Ｃが保持さ
れている。Conventionally, a canned motor pump of this type has a stator 2 fixed inside a motor frame 1 as shown in FIG.
Is a thin corrosion resistant key 3 such as stainless steel.
Therefore, the rotor 5 mounted on the main shaft 4 is also surrounded by the same chamber, and the slit C is held between the stator inner casing 3 and the rotor 5. Has been done.
一方、吸込口6aと吐出口6bを有するポンプケーシング６
の内部には、主軸４の軸端に取付けられた羽根車７が収
容されており、該羽根車主軸４の負荷側（羽根車側）軸
受８は、鋳物製ブラケツト９によつて支持されており、
また反負荷側（図で右側）軸受10は、モータフレーム１
の後端部に支持されている。On the other hand, a pump casing 6 having a suction port 6a and a discharge port 6b
An impeller 7 attached to the shaft end of the main shaft 4 is housed in the interior of the main shaft 4, and a load side (impeller side) bearing 8 of the impeller main shaft 4 is supported by a cast bracket 9. Cage,
The bearing 10 on the opposite side (right side in the figure) is the motor frame 1
It is supported at the rear end.
ポンプ運転時、羽根車７からポンプ室11へ吐出された圧
力水によつて軸受潤滑とモータ冷却をさせるために、上
記鋳物製ブラケツト９には、内側（ポンプ室側）にスト
レーナ用網12aを張設した循環水用穴12が、外周部に近
く開口され、該穴12を経て矢印のように軸受室13へ流入
した潤滑、冷却水は、固定子キヤン３と回転子５との隙
間Ｃを矢印のように通過して、反対側の軸受室14に流入
し、反負荷側軸受10を潤滑、冷却して主軸４の貫通孔15
を矢印のように流れ、羽根車７の吸込口へ返戻する循環
流路が形成されている。なお、図中、16a、16bはスラス
ト軸受、17はスラスト受座、18は電源ケーブル、19は羽
根車ナツト、29は栓である。In order to perform bearing lubrication and motor cooling by the pressure water discharged from the impeller 7 into the pump chamber 11 during pump operation, the caster bracket 9 is provided with a strainer net 12a inside (pump chamber side). The extended circulating water hole 12 is opened near the outer peripheral portion, and the lubricating and cooling water that has flowed into the bearing chamber 13 through the hole 12 as shown by the arrow forms a clearance C between the stator can 3 and the rotor 5. Through the bearing hole 14 on the opposite side to lubricate and cool the anti-load side bearing 10 to pass through the through hole 15 of the spindle 4.
Through the flow path indicated by the arrow and returned to the suction port of the impeller 7 is formed. In the figure, 16a and 16b are thrust bearings, 17 is a thrust seat, 18 is a power cable, 19 is an impeller nut, and 29 is a plug.
ポンプ運転時、上記循環流路を流れるポンプ吐出圧力水
によつて両軸受８、10の潤滑、冷却及びモータの冷却作
用が行われる。When the pump is in operation, the pump discharge pressure water flowing through the circulation flow path serves to lubricate and cool both bearings 8 and 10 and to cool the motor.
上記した従来例では、ポンプ室11からの軸受の潤滑及び
モータ冷却用水が通過する鋳物製ブラケツト９に開けた
循環水用穴12には、その内側（ポンプ室側）にストレー
ナ12aを設け、該ストレーナ12aによつてスラリ等の異物
が軸受室13へ入り難いように構成されていた。In the above-mentioned conventional example, the strainer 12a is provided on the inner side (pump chamber side) of the circulating water hole 12 formed in the casting bracket 9 through which the water for bearing lubrication and motor cooling from the pump chamber 11 passes. The strainer 12a is configured so that foreign matter such as slurry does not easily enter the bearing chamber 13.
ところが、上記のような構造では、ストレーナ12aを通
過した微細な異物により軸受８、10が摩耗し、寿命が短
くなるという問題点があつた。However, in the above structure, there is a problem that the bearings 8 and 10 are worn due to the fine foreign matter that has passed through the strainer 12a and the life is shortened.
本考案は、上記の問題点を解決し、ストレーナ12aによ
ることなく、ポンプ室から軸受、モータ室へ送られる潤
滑、冷却水に異物が混入しないようにしたキヤンドモー
タポンプを提供することを目的としている。An object of the present invention is to solve the above problems and to provide a canned motor pump in which foreign matter is not mixed into the cooling water and the lubrication sent from the pump chamber to the bearings and the motor chamber without using the strainer 12a. I am trying.
上記の目的を達成するために、本考案は、軸受の潤滑及
びモータ冷却を行なう水を、ポンプ室から該ポンプ室と
モータ室を隔離するブラケットの循環水穴を経て、固定
子キャン内側及び反負荷側軸受を通り羽根車入口へ循環
させるようにしたキャンドモータポンプにおいて、上記
ポンプ室とモータ室を隔離するブラケットと他の部材に
よって形成され且つこれら２部材の上部にのみ設けられ
た循環水穴を経てポンプ室とモータ室に通じる異物を分
離する沈澱室を、上記両室の間に介在させるようにして
形成したことを特徴としている。In order to achieve the above-mentioned object, the present invention provides water for lubricating a bearing and cooling a motor through a circulating water hole of a bracket that separates the pump chamber and the motor chamber from the inside of the stator can and the counter. In a canned motor pump that circulates through a load-side bearing to an impeller inlet, a circulating water hole formed by a bracket and another member separating the pump chamber and the motor chamber and provided only above these two members. The present invention is characterized in that a sedimentation chamber for separating foreign matters communicating with the pump chamber and the motor chamber through the above is formed so as to be interposed between the both chambers.
また、上記沈澱物を形成するブラケットと他の部材は、
上部に循環水穴をそれぞれ形成した２枚の鋼板からな
り、これら２枚の鋼板の中間に異物を分離する沈澱室を
形成するように軸方向の間隔を広げ、周縁部を重ね合わ
せるようにして取付けて構成するのが望ましい。In addition, the bracket and other members forming the precipitate are
It consists of two steel plates each having a circulating water hole formed in the upper part. The axial gap is widened so that a precipitation chamber for separating foreign matter is formed in the middle of these two steel plates, and the peripheral portions are overlapped. It is desirable to install and configure.
本考案は、上記のように構成されているので、ポンプ運
転時、羽根車からポンプ室へ吐出された圧力水の一部
は、ブラケツト上部の循環水穴より、該ブラケツトに形
成された異物を分離する沈澱室内に入り、ここで上記圧
力水に含まれたスラリ等の異物が主として重力により分
離されて下方に沈澱し、これらの異物を分離した水は、
ブラケツト上部の他方の循環水穴より、隣接した軸受室
に入り、ここで羽根車側軸受を潤滑、冷却した後、固定
子キヤン内側と回転子との隙間を通る間に該モータを冷
却し、次いで、反負荷側軸受室に入り、ここで反負荷側
軸受を潤滑冷却した後、主軸貫通孔を経て羽根車入口へ
返戻され、上記循環作用を繰り返えす。Since the present invention is configured as described above, a part of the pressure water discharged from the impeller into the pump chamber during pump operation may be rid of foreign matter formed in the bracket through the circulating water hole in the upper part of the bracket. Into the separating chamber for separation, foreign matter such as slurry contained in the pressure water is separated mainly by gravity and precipitates downward, and the water separated from these foreign matter is
From the other circulating water hole in the upper part of the bracket, enter the adjacent bearing chamber, lubricate and cool the impeller bearing here, and then cool the motor while passing through the gap between the inside of the stator can and the rotor, Then, after entering the anti-load side bearing chamber, the anti-load side bearing is lubricated and cooled, and then returned to the impeller inlet through the spindle through hole to repeat the above circulation action.
上記のように、ポンプ室内の圧力水が循環水穴を通り沈
澱室に入り、ここで異物が分離され、同室内に沈澱する
ので、異物が軸受室へ侵入する恐れがなくなる。As described above, the pressurized water in the pump chamber enters the settling chamber through the circulating water hole, where the foreign matter is separated and settles in the chamber, so that the foreign matter does not enter the bearing chamber.
次に、本考案の実施例を図面と共に説明する。 Next, an embodiment of the present invention will be described with reference to the drawings.
第１図は、本考案の一実施例を示すキヤンドモータポン
プの縦断面図であつて、図中、第２図に記載した符号と
同一の符号は同一ないし同類部分を示すものとする。FIG. 1 is a longitudinal sectional view of a canned motor pump showing an embodiment of the present invention, in which the same reference numerals as those shown in FIG. 2 designate the same or like parts.
図において、モータフレーム１の内部に固定された固定
子２は、その内側がキヤン３によつてモータロータ室と
隔離されており、一方、主軸４に取付けられた回転子５
も同様にキヤンで包まれ、両キヤンの間には細隙Ｃが形
成されており、また、吸込口6aと吐出口6bを有する鋼板
からなるポンプケーシング６の内部には、主軸４の端部
に羽根車ナツト19によつて取付けられた羽根車７が収容
されている点は、従来のもの（第２図）と変りはない。In the figure, a stator 2 fixed inside a motor frame 1 is separated from the motor rotor chamber by a can 3 on the inner side thereof, while a rotor 5 mounted on a main shaft 4 is provided.
Is also wrapped with a can, and a gap C is formed between the two cans. Further, inside the pump casing 6 made of a steel plate having a suction port 6a and a discharge port 6b, the end of the main shaft 4 is The point that the impeller 7 mounted by the impeller nut 19 is housed in the same as that of the conventional one (FIG. 2).
本実施例では、羽根車側（負荷側）軸受８を支持するブ
ラケツト21は、鋼板からなり、上方部に循環水穴22が穿
設され、該ブラケツト21に周縁部を重ね合わせるように
して、ポンプケーシング６とモータフレーム１にボルト
によつて挟着された同じく鋼板からなる第２のブラケツ
ト23が並設され、該第２のブラケツト23の上方部にも、
前記循環水穴22と位置をずらせて循環水穴24が穿設さ
れ、上記第１のブラケツト21に対し、中心軸部の軸方向
の間隔を広げ、該部に異物を分離する沈澱室25を形成し
ている。図中11はポンプ室、13、14は軸受室、15は貫通
孔、16a、16bはスラスト軸受、17はスラスト受け座、18
は電源ケーブルである。In this embodiment, the bracket 21 that supports the impeller side (load side) bearing 8 is made of a steel plate, and a circulating water hole 22 is bored in the upper part thereof so that the peripheral edge portion is overlapped with the bracket 21. A second bracket 23, which is also made of a steel plate and is sandwiched between the pump casing 6 and the motor frame 1 by bolts, is provided in parallel, and the upper portion of the second bracket 23 is also
A circulating water hole 24 is formed at a position displaced from the circulating water hole 22, and an axial space of the central shaft portion is widened with respect to the first bracket 21, and a precipitation chamber 25 for separating foreign matter is provided in the portion. Is forming. In the figure, 11 is a pump chamber, 13 and 14 are bearing chambers, 15 is a through hole, 16a and 16b are thrust bearings, 17 is a thrust receiving seat, 18
Is a power cable.
次に、作用について説明すると、ポンプ運転時、羽根車
22から、ポンプ室11へ吐出された圧力水の一部は、第１
のブラケツト21上部の循環水穴22より、第２のブラケツ
ト23とによつて形成された異物を分離する沈澱室25内に
入り、ここで上記圧力水に含まれた異物が主として重力
によつて分離された下方に沈澱し、これらの異物を分離
した水は、第２のブラケツト23上部の循環水穴24より隣
接した軸受室13に入り、ここで羽根車側軸受８を潤滑、
冷却した後、固定子キヤン３内側と回転子５との隙間Ｃ
を通る間に該モータを冷却し、次いで、反対側軸受室14
に入り、ここで反負荷側軸受10を潤滑、冷却した後、主
軸貫通孔15を経て、羽根車７入口へ返戻され、このよう
にして上記循環作用を繰り返えす。Next, the operation will be described. When the pump is operating, the impeller is
Part of the pressure water discharged from 22 to the pump chamber 11 is
From the circulating water hole 22 in the upper part of the bracket 21 into the settling chamber 25 for separating the foreign matter formed by the second bracket 23, the foreign matter contained in the pressurized water is mainly caused by gravity. The separated water that has settled down and separated these foreign substances enters the bearing chamber 13 adjacent to it through the circulating water hole 24 above the second bracket 23, where the impeller side bearing 8 is lubricated,
After cooling, the gap C between the inside of the stator can 3 and the rotor 5
Cooling the motor while passing through and then the opposite bearing chamber 14
Then, after lubricating and cooling the bearing 10 on the anti-load side, the bearing 10 is returned to the inlet of the impeller 7 through the through hole 15 of the spindle, and the above circulation operation is repeated.
この実施例によれば、２枚の鋼板製ブラケツト21、23の
中間部を軸方向に間隔を広げて沈澱室25を形成し、該沈
澱室25の上部を、互いにずれた位置に設けられた各ブラ
ケツトの循環水穴22と24に通じるようになされているの
で一方の穴22から流入した圧力水が他方の穴24より流出
する間に、該沈澱室25内で異物が分離され下方に堆積す
る。このようにして、他方の穴24より軸受室へ流出する
圧力水には異物が分離除去されているので、異物が軸受
室13、14へ侵入する恐れがなくなり、軸受寿命を延ばす
ことができる。According to this embodiment, two steel plate brackets 21 and 23 are axially spaced apart from each other to form a precipitation chamber 25, and the upper portions of the precipitation chambers 25 are provided at positions displaced from each other. Since the circulating water holes 22 and 24 of each bracket are communicated with each other, while the pressure water flowing from one hole 22 flows out from the other hole 24, foreign matters are separated in the precipitation chamber 25 and accumulated downward. To do. In this way, foreign matters are separated and removed from the pressure water flowing out from the other hole 24 into the bearing chambers, so that there is no risk of foreign matter entering the bearing chambers 13 and 14, and the bearing life can be extended.
上記した実施例において、両ブラケツト21、23に穿設さ
れた循環水穴22と24を互いにずらせて位置させた構造に
ついて説明したが、同一位置でもよい。しかし、異物の
分離効果は、循環水穴22より同穴24が、設置した状態で
軸中心から高い位置にあつた方がよい。Although the circulating water holes 22 and 24 formed in both the brackets 21 and 23 are arranged so as to be offset from each other in the embodiment described above, they may be located at the same position. However, for the effect of separating foreign matters, it is better that the hole 24 is higher than the circulating water hole 22 at a position higher than the center of the shaft when installed.
以上説明したように、本考案によれば、軸受の潤滑及び
モータ冷却水をポンプ室からブラケツトの循環水穴を経
て固定子キヤン内側及び軸受室を通り羽根車入口へ循環
させるようにしたキヤンドモータポンプにおいて、上記
ポンプ室とモータ室を隔離するブラケットと他の部材に
よって形成され且つこれら２部材の上部にのみ設けられ
た循環水穴を経てポンプ室とモータ室に通じる異物を分
離する沈澱室を、上記両室の間に介在させるようにして
形成したことにより、ポンプ室からブラケツトの循環水
穴を通過した異物が異物を分離する上記沈澱室内での分
離、沈澱し、軸受室へ侵入するのが阻止されるので、軸
受寿命を延ばすことができる。As described above, according to the present invention, the lubrication of the bearing and the motor cooling water are circulated from the pump chamber to the impeller inlet through the inside of the stator can through the circulating water hole of the bracket and the bearing chamber. In a motor pump, a precipitation chamber is formed by a bracket for separating the pump chamber from the motor chamber and another member, and separates foreign matters communicating with the pump chamber and the motor chamber through a circulating water hole provided only above these two members. Is formed so as to be interposed between the two chambers, the foreign matter which has passed through the circulating water hole of the bracket from the pump chamber separates the foreign matter. Is prevented, so that the life of the bearing can be extended.
また、上記沈澱室を、周縁部を挟持され且つ上部に循環
水穴を有する２枚にブラケツトの中間部を軸方向に間隔
を広げて形成することにより、簡単な構成により異物を
分離する沈澱室を容易に製作することができる。Further, the precipitation chamber is formed by separating the foreign matter with a simple structure by forming the intermediate portion of the bracket with two axially-spaced intermediate portions of the bracket with a circulating water hole in the upper portion. Can be easily manufactured.
第１図は本考案の一実施例を示すキヤンドモータポンプ
の縦断面図、第２図は従来例を示す縦断面図である。 １…モータフレーム、２…固定子、３…キヤン、４…主
軸、５…回転子、６…ポンプケーシング、７…羽根車、
８、10…軸受、11…ポンプ室、13、14…軸受室、15…貫
通孔、16a、16b…スラスト軸受、21、23…ブラケツト、
22、24…循環水穴、25…沈澱室。FIG. 1 is a vertical sectional view of a canned motor pump showing an embodiment of the present invention, and FIG. 2 is a vertical sectional view showing a conventional example. DESCRIPTION OF SYMBOLS 1 ... Motor frame, 2 ... Stator, 3 ... CAN, 4 ... Main shaft, 5 ... Rotor, 6 ... Pump casing, 7 ... Impeller,
8, 10 ... Bearing, 11 ... Pump chamber, 13, 14 ... Bearing chamber, 15 ... Through hole, 16a, 16b ... Thrust bearing, 21, 23 ... Bracket,
22, 24 ... Circulating water holes, 25 ... Settling chamber.
Claims (2)
ポンプ室から該ポンプ室とモータ室を隔離するブラケッ
トの循環水穴を経て、固定子キャン内側及び反負荷側軸
受を通り羽根車入口へ循環させるようにしたキャンドモ
ータポンプにおいて、上記ポンプ室とモータ室を隔離す
るブラケットと他の部材によって形成され且つこれら２
部材の上部にのみ設けられた循環水穴を経てポンプ室と
モータ室に通じる異物を分離する沈澱室を、上記両室の
間に介在させるようにして形成したことを特徴とするキ
ャンドモータポンプ。1. Water for lubricating a bearing and cooling a motor,
A canned motor pump in which the pump chamber and the motor chamber are circulated to the impeller inlet through a circulating water hole of a bracket that separates the pump chamber and the motor chamber from each other through the bearing inside the stator can and the bearing on the anti-load side, Formed by brackets and other members that separate the chamber and these two
A canned motor pump, characterized in that a precipitation chamber for separating foreign matters communicating with the pump chamber and the motor chamber through a circulating water hole provided only on the upper part of the member is formed so as to be interposed between the both chambers.
を、上部に循環水穴をそれぞれ形成した２枚の薄板から
なるブラケットで構成し、中間に異物を分離する沈澱室
を形成するように軸方向に間隔を広げ、周縁部を重ね合
わせるようにして取付けたことを特徴とする請求項１記
載のキャンドモータポンプ。2. A bracket for forming a precipitation chamber and other members are composed of a bracket made of two thin plates each having a circulating water hole formed in the upper part thereof, and a precipitation chamber for separating foreign matter is formed in the middle. The canned motor pump according to claim 1, wherein the canned motor pump is mounted such that the interval is widened in the axial direction and the peripheral portions are overlapped with each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989079517U JPH0746792Y2 (en) | 1989-07-07 | 1989-07-07 | Canned motor pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989079517U JPH0746792Y2 (en) | 1989-07-07 | 1989-07-07 | Canned motor pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0319488U JPH0319488U (en) | 1991-02-26 |
| JPH0746792Y2 true JPH0746792Y2 (en) | 1995-10-25 |
Family
ID=31623741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989079517U Expired - Lifetime JPH0746792Y2 (en) | 1989-07-07 | 1989-07-07 | Canned motor pump |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0746792Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4890008B2 (en) * | 2005-11-17 | 2012-03-07 | 株式会社タブチ | Flow control valve |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5768587A (en) * | 1980-10-14 | 1982-04-26 | Nikkiso Co Ltd | Canned motor pump |
| JPH0350318Y2 (en) * | 1988-10-13 | 1991-10-28 |
-
1989
- 1989-07-07 JP JP1989079517U patent/JPH0746792Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0319488U (en) | 1991-02-26 |
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