CN201582126U - Multistage pump for reducing hydraulic loss - Google Patents
Multistage pump for reducing hydraulic loss Download PDFInfo
- Publication number
- CN201582126U CN201582126U CN2009202137338U CN200920213733U CN201582126U CN 201582126 U CN201582126 U CN 201582126U CN 2009202137338 U CN2009202137338 U CN 2009202137338U CN 200920213733 U CN200920213733 U CN 200920213733U CN 201582126 U CN201582126 U CN 201582126U
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- CN
- China
- Prior art keywords
- suction
- suction chamber
- segment
- impeller
- pump
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- 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
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Abstract
The utility model discloses a multistage pump, which comprises a main shaft and a pump body, wherein the pump body comprises a suction segment and a discharging segment, at least two sections of impellers are arranged at an intermediate segment, and a guide vane is arranged at the flow path outlet of each section of impeller. The multistage pump is characterized in that the suction chamber of the suction segment is a pear-shaped spiral suction chamber, and the suction chamber and the flow path inlet of the first section of impeller are in smooth connection. In the utility model, the suction chamber of the suction segment is designed into the pear-shaped spiral suction chamber, and the transition from the suction chamber of the suction segment to the flow path inlet of the first stage of impeller is smoother, so that a water flow is more stably transited, the hydraulic loss is reduced, and the pump efficiency is improved. The utility model has the advantages of simple structure and high pump efficiency.
Description
Technical field
The utility model relates to the multistage pump field, is specifically related to the less multistage pump of a kind of hydraulic loss.
Background technique
Fig. 1 is a kind of existing multistage pump, comprises main shaft, and an end of main shaft is provided with coupling 1 and sliding bearing 2, the main shaft the other end is provided with sliding bearing 9, the main shaft middle part is provided with the pump housing, and the pump housing comprises suction casing 3, impeller 4, stage casing 5, stator 6, Spit Section 7, stuffing box body 8.Establish suction chamber in the suction casing 3, suction chamber is communicated with the runner inlet of the first segment impeller 4 in stage casing 5, the runner exit of first segment impeller 4 is communicated with by the runner inlet of stator with the second joint impeller 4,, the runner exit of final section impeller 4 is communicated with the chamber inlet channel that spues of Spit Section 7 by stator.There is following shortcoming in it: suction casing is annular suction chamber, and hydraulic loss is big; Have some setbacks to first stage impeller import transition from the suction casing suction chamber, the loss of current bump is big.
Summary of the invention
The utility model provides a kind of multistage pump that can reduce hydraulic loss.
In order to realize this purpose, scheme of the present utility model is as follows: a kind of multistage pump that reduces hydraulic loss, comprise the main shaft and the pump housing, the pump housing comprises suction casing, Spit Section, the stage casing is provided with at least two joint impellers, the runner exit of every joint impeller is provided with stator, and the suction chamber that it is characterized in that suction casing is a pyriform spirality suction chamber, and suction chamber is connected for slick and sly with the runner inlet of first segment impeller.
The utility model is designed to pyriform spirality suction chamber with the suction chamber of suction casing, and the suction casing suction chamber makes current transition more reposefully to the first stage impeller runner rounding off more that enters the mouth, and reduces hydraulic loss, has improved pump efficiency.Advantage of the present utility model is simple in structure, the pump efficiency height.
Description of drawings
Fig. 1 is the structural representation of prior art multistage pump
Fig. 2 is the structural representation of the utility model multistage pump
Embodiment
A kind of multistage pump that reduces hydraulic loss, comprise the main shaft and the pump housing, the pump housing comprises suction casing 3, stage casing 5, Spit Section 7, stage casing 5 is provided with at least two joint impellers 4, the runner exit of every joint impeller 4 is provided with stator 6, the suction chamber that it is characterized in that suction casing 3 is a pyriform spirality suction chamber, and suction chamber is connected for slick and sly with the runner inlet of first segment impeller 4.In this embodiment, increased first segment impeller 4 inlet channel fillets, made suction chamber be connected for slick and sly with the runner inlet of first segment impeller 4.
The utility model is on existing multistage pump basis, the suction chamber of suction casing 3 is designed to pyriform spirality suction chamber, first segment impeller 4 inlet channel fillets have been increased, make suction casing 3 suction chambers to the first segment impeller 4 runners rounding off more that enters the mouth, make current transition more reposefully, reduce hydraulic loss, improved pump efficiency.
Claims (1)
1. multistage pump that reduces hydraulic loss, comprise the main shaft and the pump housing, the pump housing comprises suction casing, Spit Section, the stage casing is provided with at least two joint impellers, the runner exit of every joint impeller is provided with stator, the suction chamber that it is characterized in that suction casing is a pyriform spirality suction chamber, and suction chamber is connected for slick and sly with the runner inlet of first segment impeller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202137338U CN201582126U (en) | 2009-11-17 | 2009-11-17 | Multistage pump for reducing hydraulic loss |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202137338U CN201582126U (en) | 2009-11-17 | 2009-11-17 | Multistage pump for reducing hydraulic loss |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201582126U true CN201582126U (en) | 2010-09-15 |
Family
ID=42724125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202137338U Expired - Fee Related CN201582126U (en) | 2009-11-17 | 2009-11-17 | Multistage pump for reducing hydraulic loss |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201582126U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102338122A (en) * | 2011-09-02 | 2012-02-01 | 合肥华升泵阀有限责任公司 | Tangent pump |
| CN104791253A (en) * | 2015-04-20 | 2015-07-22 | 杨海霞 | Novel multistage centrifugal pump |
| CN108131287A (en) * | 2018-02-07 | 2018-06-08 | 浙江核芯泵业有限公司 | A kind of high-power petroleum pump |
-
2009
- 2009-11-17 CN CN2009202137338U patent/CN201582126U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102338122A (en) * | 2011-09-02 | 2012-02-01 | 合肥华升泵阀有限责任公司 | Tangent pump |
| CN104791253A (en) * | 2015-04-20 | 2015-07-22 | 杨海霞 | Novel multistage centrifugal pump |
| CN104791253B (en) * | 2015-04-20 | 2017-04-12 | 江苏庆海石油机械有限公司 | Multistage centrifugal pump |
| CN108131287A (en) * | 2018-02-07 | 2018-06-08 | 浙江核芯泵业有限公司 | A kind of high-power petroleum pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100915 Termination date: 20171117 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |