JPH02119997U - - Google Patents
Info
- Publication number
- JPH02119997U JPH02119997U JP3021489U JP3021489U JPH02119997U JP H02119997 U JPH02119997 U JP H02119997U JP 3021489 U JP3021489 U JP 3021489U JP 3021489 U JP3021489 U JP 3021489U JP H02119997 U JPH02119997 U JP H02119997U
- Authority
- JP
- Japan
- Prior art keywords
- pump
- chamber
- seal
- suction port
- seal chamber
- 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
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
第１図はこの考案の一実施例を示す縦断面図、
第２図はその要部拡大図、第３図はこの考案と従
来のものとの各部の圧力差を示す比較表、第４図
は従来の一実施例を示す縦断面図である。
２……ポンプ室、３……羽根車、４……中間ケ
ーシング、５……ポンプ軸、６……モーター、７
……メカニカルシール、８……シール室、９……
吸込口、１０……吐出口、１１……第１連通孔、
１２……第２連通孔、４１……第１段目の中間ケ
ーシング。
FIG. 1 is a longitudinal sectional view showing an embodiment of this invention.
FIG. 2 is an enlarged view of the main parts, FIG. 3 is a comparison table showing the pressure difference in each part between this invention and the conventional one, and FIG. 4 is a longitudinal sectional view showing one conventional embodiment. 2... Pump chamber, 3... Impeller, 4... Intermediate casing, 5... Pump shaft, 6... Motor, 7
...Mechanical seal, 8...Seal chamber, 9...
Suction port, 10...Discharge port, 11...First communication hole,
12...Second communication hole, 41...First stage intermediate casing.
Claims (1)
ング４を多段状に積み重ねて設置し、前記羽根車
を駆動するポンプ軸５の一端にモーター６を連結
した構造の多段渦巻ポンプにおいて、ポンプ室２
とモーター６との間にメカニカルシール７を収容
するシール室８を設け、このシール室の近傍個所
に吸込口９を形成し、前記ポンプ軸の他端の、前
記吸込口と相対する側に吐出口１０を配するとと
もに、第１段目の中間ケーシング４１内と前記シ
ール室とを連通する第１連通孔１１、及び前記シ
ール室と前記吸込口とを連通する第２連通孔１２
を設けたことを特徴とする多段渦巻ポンプのシー
ル構造。 In a multi-stage centrifugal pump having a structure in which a plurality of impellers 3 and intermediate casings 4 are stacked in multiple stages in a pump chamber 2, and a motor 6 is connected to one end of a pump shaft 5 for driving the impellers, the pump chamber 2
A seal chamber 8 for housing a mechanical seal 7 is provided between the pump shaft and the motor 6, a suction port 9 is formed near the seal chamber, and a discharge port is formed at the other end of the pump shaft on the side opposite to the suction port. A first communication hole 11 in which the outlet 10 is disposed and communicates between the inside of the first stage intermediate casing 41 and the seal chamber, and a second communication hole 12 that communicates the seal chamber and the suction port.
A seal structure for a multistage centrifugal pump characterized by the provision of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3021489U JPH0710076Y2 (en) | 1989-03-15 | 1989-03-15 | Seal structure of multi-stage centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3021489U JPH0710076Y2 (en) | 1989-03-15 | 1989-03-15 | Seal structure of multi-stage centrifugal pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02119997U true JPH02119997U (en) | 1990-09-27 |
| JPH0710076Y2 JPH0710076Y2 (en) | 1995-03-08 |
Family
ID=31255083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3021489U Expired - Lifetime JPH0710076Y2 (en) | 1989-03-15 | 1989-03-15 | Seal structure of multi-stage centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0710076Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000227088A (en) * | 1999-02-05 | 2000-08-15 | Tsurumi Mfg Co Ltd | Vertical submerged motor-driven pump |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6940952B2 (en) * | 2017-01-10 | 2021-09-29 | 三菱重工業株式会社 | Liquid booster and urea synthesis plant |
-
1989
- 1989-03-15 JP JP3021489U patent/JPH0710076Y2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000227088A (en) * | 1999-02-05 | 2000-08-15 | Tsurumi Mfg Co Ltd | Vertical submerged motor-driven pump |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0710076Y2 (en) | 1995-03-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |