JPH0465986U - - Google Patents
Info
- Publication number
- JPH0465986U JPH0465986U JP10568690U JP10568690U JPH0465986U JP H0465986 U JPH0465986 U JP H0465986U JP 10568690 U JP10568690 U JP 10568690U JP 10568690 U JP10568690 U JP 10568690U JP H0465986 U JPH0465986 U JP H0465986U
- Authority
- JP
- Japan
- Prior art keywords
- auxiliary
- canned motor
- generating means
- pump
- back surface
- 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
- 239000012530 fluid Substances 0.000 claims 2
- 239000007788 liquid Substances 0.000 claims 1
- 210000003746 feather Anatomy 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
第１図は本考案に係るキヤンドモータポンプの
一実施例を示す要部断面側面図、第２図は本考案
に係るキヤンドモータポンプに適用する補助イン
ペラの一実施例を示す要部断面図、第３図は同じ
く補助インペラの別の実施例を示す要部断面図、
第４図ａは第３図に示す補助インペラの変形例を
示す要部断面図、第４図ｂは第４図ａに示す補助
ポンプの要部壁面説明図、第５図は同じく補助イ
ンペラ他の実施例を示す要部断面図、第６図は同
じく補助インペラ他の実施例を示す要部断面図、
第７図は本考案に係るキヤンドモータポンプに適
用する絞り機構の要部断面図である。
１０……ポンプ部、１２……キヤンドモータ部
、１４……アダプタ、１６……前部ロータ室、１
８……後部ロータ室、２０，２２……ベアリング
ハウジング、２４……前部ベアリング、２６……
後部ベアリング、２８……モータロータ、３０…
…ロータ軸、３２……補助インペラ、３４……サ
ーキユレーシヨンチユーブ、３６……モータステ
ータ、３８……熱交換用ジヤケツト、４０……軸
貫通部間隙、４２……絞り機構、４４……バツク
フラツシング系、５０……羽根、５２……羽根、
５４……補助ポンプ室壁面、５６……旋回溝、５
８……ラビリンス、６０……多段オリフイス、６
２……凹部、６４……回転リング。
Fig. 1 is a cross-sectional side view of a main part showing an embodiment of a canned motor pump according to the present invention, and Fig. 2 is a cross-sectional view of a main part showing an embodiment of an auxiliary impeller applied to a canned motor pump according to the present invention. FIG. 3 is a sectional view of a main part showing another embodiment of the auxiliary impeller,
Fig. 4a is a cross-sectional view of the main part showing a modification of the auxiliary impeller shown in Fig. 3, Fig. 4b is an explanatory wall view of the main part of the auxiliary pump shown in Fig. 4a, and Fig. 5 is also a sectional view of the main part of the auxiliary impeller shown in Fig. 4a. FIG. 6 is a sectional view of the main part showing another embodiment of the auxiliary impeller.
FIG. 7 is a sectional view of a main part of the throttle mechanism applied to the canned motor pump according to the present invention. 10... Pump section, 12... Canned motor section, 14... Adapter, 16... Front rotor chamber, 1
8... Rear rotor chamber, 20, 22... Bearing housing, 24... Front bearing, 26...
Rear bearing, 28...Motor rotor, 30...
... Rotor shaft, 32 ... Auxiliary impeller, 34 ... Circulation tube, 36 ... Motor stator, 38 ... Heat exchange jacket, 40 ... Shaft penetration gap, 42 ... Throttle mechanism, 44 ... Back flushing system, 50... feather, 52... feather,
54...Auxiliary pump chamber wall surface, 56...Swivel groove, 5
8...Labyrinth, 60...Multi-stage orifice, 6
2... recess, 64... rotating ring.
Claims (1)
ポンプ室側に補助ポンプを設け、ロータ室内にポ
ンプ取扱液を導入すると共に外部よりバツクフラ
ツシング液を供給し、前記補助ポンプの補助イン
ペラにより昇圧した液を外部配管により導出して
モータケーシングの外周部に配設した熱交換用ジ
ヤケツト内を経て後部ロータ室に循環させるよう
構成したキヤンドモータポンプにおいて、 前記補助インペラは前部ベアリング側に対面し
た羽根とすると共にその背面に前部ロータ室内の
流路抵抗を増大させる逆流発生手段を設けること
を特徴とするキヤンドモータポンプ。 (2) 逆流発生手段は、補助インペラのボス部に
ロータ軸と平行に穿設されるバランス孔を有しな
い構成からなる請求項１記載のキヤンドモータポ
ンプ。 (3) 逆流発生手段は、補助インペラの背面に比
較的小さい羽根を付設してなる請求項１記載のキ
ヤンドモータポンプ。 (4) 逆流発生手段は、補助インペラの背面に比
較的小さい羽根を付設すると共にこれらの羽根と
対向する補助ポンプ室壁面に旋回状の溝を設けて
なる請求項１記載のキヤンドモータポンプ。 (5) 逆流発生手段は、補助インペラの背面とこ
れに対向する補助ポンプ室壁面との間にラビリン
スを形成してなる請求項１記載のキヤンドモータ
ポンプ。 (6) 逆流発生手段は、補助インペラの背面とこ
れに対向する補助ポンプ室壁面との間に階段状の
多段オリフイスを形成してなる請求項１記載のキ
ヤンドモータポンプ。[Scope of Claim for Utility Model Registration] (1) An auxiliary pump is provided in the front rotor chamber adjacent to the front bearing on the pump chamber side, and pump handling fluid is introduced into the rotor chamber and backflushing fluid is supplied from the outside. In the canned motor pump, the liquid pressurized by the auxiliary impeller of the auxiliary pump is led out through external piping and circulated to the rear rotor chamber through a heat exchange jacket disposed on the outer periphery of the motor casing. The canned motor pump is characterized in that the auxiliary impeller has blades facing the front bearing side and is provided with backflow generating means for increasing flow path resistance in the front rotor chamber on the back surface thereof. (2) The canned motor pump according to claim 1, wherein the backflow generating means does not have a balance hole formed in the boss portion of the auxiliary impeller in parallel with the rotor axis. (3) The canned motor pump according to claim 1, wherein the backflow generating means comprises relatively small blades attached to the back surface of the auxiliary impeller. (4) The canned motor pump according to claim 1, wherein the backflow generating means comprises relatively small blades attached to the back surface of the auxiliary impeller, and a spiral groove provided on the wall surface of the auxiliary pump chamber facing the blades. (5) The canned motor pump according to claim 1, wherein the backflow generating means forms a labyrinth between the back surface of the auxiliary impeller and the wall surface of the auxiliary pump chamber facing thereto. (6) The canned motor pump according to claim 1, wherein the backflow generating means includes a step-like multi-stage orifice formed between the back surface of the auxiliary impeller and the wall surface of the auxiliary pump chamber facing thereto.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990105686U JPH0749038Y2 (en) | 1990-10-09 | 1990-10-09 | Canned motor pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990105686U JPH0749038Y2 (en) | 1990-10-09 | 1990-10-09 | Canned motor pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0465986U true JPH0465986U (en) | 1992-06-09 |
| JPH0749038Y2 JPH0749038Y2 (en) | 1995-11-13 |
Family
ID=31851470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990105686U Expired - Lifetime JPH0749038Y2 (en) | 1990-10-09 | 1990-10-09 | Canned motor pump |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0749038Y2 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS506042A (en) * | 1973-05-21 | 1975-01-22 | ||
| JPS53138204U (en) * | 1977-04-07 | 1978-11-01 | ||
| JPS6351194U (en) * | 1986-09-22 | 1988-04-06 |
-
1990
- 1990-10-09 JP JP1990105686U patent/JPH0749038Y2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS506042A (en) * | 1973-05-21 | 1975-01-22 | ||
| JPS53138204U (en) * | 1977-04-07 | 1978-11-01 | ||
| JPS6351194U (en) * | 1986-09-22 | 1988-04-06 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0749038Y2 (en) | 1995-11-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS6352992U (en) | ||
| EP0746683B1 (en) | Pump with fluid bearing | |
| US4465437A (en) | Pump comprising a canned motor | |
| CA2339818A1 (en) | Fluid pump | |
| JPH0465986U (en) | ||
| JPH01290996A (en) | Canned pump | |
| JPS6351194U (en) | ||
| JPS5885398A (en) | Spiral pump | |
| CN219412938U (en) | Water pump | |
| JPH0319489U (en) | ||
| JPS5912194A (en) | Glandless pump | |
| JPH0465987U (en) | ||
| JP3115751B2 (en) | All circumferential flow canned motor pump | |
| JPS61113997U (en) | ||
| JPH0435639B2 (en) | ||
| JPS6346720Y2 (en) | ||
| JPH0128237B2 (en) | ||
| JPH02107792U (en) | ||
| JPS6352991U (en) | ||
| JPH01121597A (en) | Canned pump | |
| JPS63182295U (en) | ||
| JPH0518533Y2 (en) | ||
| JPH05296196A (en) | Casing structure of sheet metal made in-line pump | |
| JPS5952199U (en) | underwater pump | |
| JPS61147398U (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| EXPY | Cancellation because of completion of term |