CN2844530Y - Axial-forced balancer of sectional multi-stage pump - Google Patents
Axial-forced balancer of sectional multi-stage pump Download PDFInfo
- Publication number
- CN2844530Y CN2844530Y CN 200520046324 CN200520046324U CN2844530Y CN 2844530 Y CN2844530 Y CN 2844530Y CN 200520046324 CN200520046324 CN 200520046324 CN 200520046324 U CN200520046324 U CN 200520046324U CN 2844530 Y CN2844530 Y CN 2844530Y
- Authority
- CN
- China
- Prior art keywords
- pump
- pump housing
- pump body
- drum
- balance
- 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 - Fee Related
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- Control Of Non-Positive-Displacement Pumps (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model relates to an axial force balancing device for multistage pumps with separated sections, which is composed of a pump body and a pump shaft of a multistage pump, wherein the pump shaft is provided with a tail stage impeller at least and is fixedly provided with a balance drum which is positioned between the rear side of the tail stage impeller and the pump body. The balance drum is in a cylinder shape. A gap is arranged between the outer circumference of the balance drum and the pump body. The rear side of the balance drum in the pump body is provided with a cavity which is connected with a communicating pipe. The communicating pipe passes through the pump body to be communicated with a suction inlet of the pump body. The inner wall of the pump body on the outer side of the outer circumference of the balance drum is provided with a balance sleeve. Space between the balance drum and the tail stage impeller is a high pressure area. Space on the rear side of the balance drum is communicated with the suction inlet of the pump body and is a lower pressure area. The balance drum can balance the axial force generated by the utility model for the pump shaft by the backward push force of liquid when multistage impellers operate. Thus, the pump can operate steadily and reliably, and the service life of the pump is extended.
Description
Technical field:
The utility model relates to fluid conveying machine, relates in particular to pump, particularly multistage segmental type pump, and concrete is a kind of axial thrust balancing devices of multistage segmental type pump.
Background technique:
Axial force is very big in the multistage segmental type pump, use thrust bearing to bear axial force in the prior art in multistage segmental type pump, its effect is undesirable, and general thrust bearing can not bear the axial force in the multistage segmental type pump, cause pump operation instability, unreliable, the life-span of pump reduces.
Summary of the invention:
The purpose of this utility model provides a kind of axial thrust balancing devices of multistage segmental type pump, and the axial thrust balancing devices of described this multistage segmental type pump will solve the technical problem that thrust bearing in the prior art can not bear the axial force in the multistage segmental type pump.
The axial thrust balancing devices of this multistage segmental type pump of the present utility model is made of the pump housing and the pump shaft of multistage pump, described pump shaft is arranged in the pump housing, at least be provided with an impeller on the described pump shaft, wherein, be set with a balancing drum on the described pump shaft, described balancing drum is between the rear side and the pump housing of impeller, described balancing drum is cylindrical body, be provided with the gap between the excircle of described balancing drum and the pump housing, be provided with cavity in the pump housing of balancing drum rear side, described cavity is connected with a connecting tube, passes the pump housing described connecting tube and is communicated with the suction port of the pump housing.
Further, the pump housing inwall in the described balancing drum excircle outside is provided with a balance set, and described balance set is fixedlyed connected with pump housing inwall, and described balance set is cylindrical tube, is provided with the gap between described balance set and the balancing drum.
Working principle of the present utility model is: balancing drum is arranged at after the impeller of multistage pump, space between balancing drum and the impeller is the zone of high pressure, the space of balancing drum rear side communicates with the suction port of the pump housing, be low pressure area, the balancing drum liquid body is the thrust of (promptly by impeller eye to the back shroud direction) backward, the axial force that when this thrust can turn round in order to the balance multi-stage impeller pump shaft is produced.Design balance when drum, can the suffered thrust of calculated equilibrium drum, make thrust equal to act on total axial force on the pump shaft.
The utility model and prior art contrast, and its effect is actively with tangible.The utility model is provided with balancing drum on the pump shaft of multistage pump, utilize connecting tube that the space of balancing drum rear side is communicated with the suction port of the pump housing, during running, balancing drum is subjected to the thrust from impeller one side direction, the axial force that when thrust that balancing drum produces pump shaft can equal impeller operation pump shaft is produced, make pump operation reliable and stable, the life-span of pump prolongs.
Description of drawings:
Fig. 1 is the structural representation of the axial thrust balancing devices of multistage segmental type pump of the present utility model.
Embodiment:
As shown in Figure 1, the axial thrust balancing devices of multistage segmental type pump of the present utility model is made of the pump housing 1 and the pump shaft 2 of multistage pump, described pump shaft 2 is arranged in the pump housing 1, at least be provided with an impeller 3 on the described pump shaft 2, wherein, be set with a balancing drum 4 on the described pump shaft 2, described balancing drum 4 is between the rear side and the pump housing 1 of impeller 3, described balancing drum 4 is cylindrical body, be provided with the gap between the excircle of described balancing drum 4 and the pump housing 1, be provided with cavity 5 in the pump housing 1 of balancing drum 4 rear sides, described cavity 5 is connected with a connecting tube 7, passes the pump housing 1 described connecting tube 7 and is communicated with the suction port of the pump housing 1.
Further, the pump housing 1 inwall in the described balancing drum 4 excircles outside is provided with a balance set 6, and described balance set 6 is fixedlyed connected with the pump housing 1 inwall, and described balance set 6 is cylindrical tube, is provided with the gap between described balance set 6 and the balancing drum 4.
Claims (2)
1. the axial thrust balancing devices of a multistage segmental type pump, the pump housing and pump shaft by multistage pump constitute, described pump shaft is arranged in the pump housing, at least be provided with an impeller on the described pump shaft, it is characterized in that: be set with a balancing drum on the described pump shaft, described balancing drum is between the rear side and the pump housing of impeller, described balancing drum is cylindrical body, be provided with the gap between the excircle of described balancing drum and the pump housing, be provided with cavity in the pump housing of balancing drum rear side, described cavity is connected with a connecting tube, passes the pump housing described connecting tube and is communicated with the suction port of the pump housing.
2. the axial thrust balancing devices of multistage segmental type pump as claimed in claim 1, it is characterized in that: the pump housing inwall in the described balancing drum excircle outside is provided with a balance set, described balance set is fixedlyed connected with pump housing inwall, described balance set is cylindrical tube, is provided with the gap between described balance set and the balancing drum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520046324 CN2844530Y (en) | 2005-11-07 | 2005-11-07 | Axial-forced balancer of sectional multi-stage pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520046324 CN2844530Y (en) | 2005-11-07 | 2005-11-07 | Axial-forced balancer of sectional multi-stage pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2844530Y true CN2844530Y (en) | 2006-12-06 |
Family
ID=37486480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520046324 Expired - Fee Related CN2844530Y (en) | 2005-11-07 | 2005-11-07 | Axial-forced balancer of sectional multi-stage pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2844530Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105650446A (en) * | 2016-01-03 | 2016-06-08 | 詹白勺 | Rapid starting vertical type multistage centrifugal oil pump throttled and sealed by balancing drum |
| CN105650445A (en) * | 2016-01-03 | 2016-06-08 | 詹白勺 | Double-tap vertical oil pump capable of being rapidly started |
| CN106368977A (en) * | 2015-07-23 | 2017-02-01 | 苏尔寿管理有限公司 | Pump for the conveyance of a fluid with varying viscosity |
-
2005
- 2005-11-07 CN CN 200520046324 patent/CN2844530Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106368977A (en) * | 2015-07-23 | 2017-02-01 | 苏尔寿管理有限公司 | Pump for the conveyance of a fluid with varying viscosity |
| CN105650446A (en) * | 2016-01-03 | 2016-06-08 | 詹白勺 | Rapid starting vertical type multistage centrifugal oil pump throttled and sealed by balancing drum |
| CN105650445A (en) * | 2016-01-03 | 2016-06-08 | 詹白勺 | Double-tap vertical oil pump capable of being rapidly started |
| CN105650446B (en) * | 2016-01-03 | 2017-10-27 | 华东交通大学 | Balancing drum throttling is sealedly quick to start vertical multi-stage centrifugal oil pump |
| CN105650446B8 (en) * | 2016-01-03 | 2018-12-07 | 浙江水泵总厂有限公司 | The quick start vertical multi-stage centrifugal oil pump of balancing drum throttling sealing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20061206 Termination date: 20121107 |