CN200989334Y - Self-balancing multistage pump - Google Patents
Self-balancing multistage pump Download PDFInfo
- Publication number
- CN200989334Y CN200989334Y CN 200620175277 CN200620175277U CN200989334Y CN 200989334 Y CN200989334 Y CN 200989334Y CN 200620175277 CN200620175277 CN 200620175277 CN 200620175277 U CN200620175277 U CN 200620175277U CN 200989334 Y CN200989334 Y CN 200989334Y
- Authority
- CN
- China
- Prior art keywords
- pump
- equilibrating
- axle
- hole
- hollow hole
- 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
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Abstract
The utility model relates to a self-equilibrating multistage pump. A pump axle is provided with a hollow hole and the location at an upper equilibrating drum cavity of the pump axle is provided with a through-hole. The through-hole is communicated with the upper equilibrating drum cavity and the hollow hole on the pump axle. The hollow hole on the top of the pump axle is sealed and the hollow hole at the bottom of the pump axle is communicated with an axle return-water outlet. With the structure and improved self structure of the multistage pump, the pressure on the upper equilibrating drum cavity is reduced without any outside pressure-released pipe connected; the problem that the multistage pump is easy to be damaged during the transportation is resolved; meanwhile, the production cost is lowered because of omission of the outside pressure-released pipe; and the appearance and structure of the pump are beautiful. When the multistage pump is at operation, the pressured water in the upper equilibrating drum cavity enters the hollow holes of the pump axle through the through-hole and flows into the water inlet of the pump through the hollow hole of the pump axle, thus the pressure-released goal is finished, the pressure on the upper equilibrating drum cavity is lowered and the axial force of the multistage pump is overcome, hereby playing a role of self equilibrating for the multistage pump.
Description
One. technical field
This novel a kind of pump, particularly a kind of multistage pump of relating to.
Two. background technique
Multistage pump in the prior art, because impeller eye pressure is lower than the pressure of impeller back, when water pump operation, can produce axial force, in order to overcome axial force, general pump all is communicated with a relief tube on balancing drum, this pipe is directly received the water inlet of pump, to reduce the pressure above the balancing drum, guarantees the normal use of multistage pump; So both increased cost, had not attractive in appearancely, and in transportation process, damaged easilier.
Three. summary of the invention
This novel purpose is: design a kind of can reducing production costs, be convenient to transportation, self-balanced multiple-stage pump aesthetic in appearance.
Concrete structure is: have hollow hole on pump shaft, pump shaft is positioned at balancing drum epicoele place and has through hole, and through hole is communicated with the hollow hole on balancing drum epicoele and the pump shaft, the hollow hole sealing at pump shaft top, and the hollow hole of pump shaft bottom communicates with the axle backwater mouth.
Adopt this kind structure,, reduced the pressure of balancing drum epicoele by the improvement of multistage pump self structure, need not connect outside relief tube, solve the problem of rapid wear in the multistage pump transportation, simultaneously owing to saved outside relief tube, reduced cost of production, and appearance structure is elegant in appearance.
When water pump operation, the hydraulic pressure of balancing drum epicoele, enter into the hollow hole of pump shaft by through hole, flow to the water inlet of water pump by hollow hole, thereby finish the purpose of pressure release, reduce the pressure in the balancing drum epicoele, made multi-stage pump axial force obtain overcoming, played the effect of multistage pump self balancing.
Four. description of drawings
This new structure of Fig. 1 figure
Five. embodiment
As shown in Figure 1, saved the multistage pump sectional drawing of motor part (not drawing) among the figure, the improvement of this new structure is to have hollow hole 4 on pump shaft 5, pump shaft 5 is positioned at balancing drum epicoele 3 places and has through hole 2, the hollow hole 4 that through hole 2 is communicated with on balancing drum epicoele 3 and the pump shaft 5, the hollow hole sealing at pump shaft top 1, the hollow hole of pump shaft bottom 7 communicates with axle backwater mouth 6.11 is impeller among the figure.
When water pump operation, the hydraulic pressure of balancing drum epicoele 3, enter into the hollow hole 4 of pump shaft 5 by through hole 2, flow to axle backwater hole 6 places of pump shaft 5 by hollow hole 4, utilize the gap between interior cover 8 of axle and the outer shaft sleeve 9, hydraulic pressure enters into the water inlet 10 of water pump by this gap, thereby finishes the purpose of pressure release, reduce the pressure of balancing drum epicoele, played the effect of multistage pump self balancing.
Claims (1)
1. self-balanced multiple-stage pump, comprise: pump shaft, impeller, pump into the mouth of a river, balancing drum epicoele, it is characterized in that: on pump shaft, have hollow hole, pump shaft is positioned at balancing drum epicoele place and has through hole, through hole is communicated with the hollow hole on balancing drum epicoele and the pump shaft, the hollow hole top seal, the hollow hole bottom communicates with the axle backwater mouth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620175277 CN200989334Y (en) | 2006-12-26 | 2006-12-26 | Self-balancing multistage pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620175277 CN200989334Y (en) | 2006-12-26 | 2006-12-26 | Self-balancing multistage pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200989334Y true CN200989334Y (en) | 2007-12-12 |
Family
ID=38940371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620175277 Expired - Lifetime CN200989334Y (en) | 2006-12-26 | 2006-12-26 | Self-balancing multistage pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200989334Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103307016A (en) * | 2013-05-23 | 2013-09-18 | 君禾泵业股份有限公司 | Novel high and low pressure separation sealing type submersible pump |
| CN107349650A (en) * | 2017-07-19 | 2017-11-17 | 上海诺辉工程科技发展有限公司 | Auto purification type screw extrusion filter and its application method |
-
2006
- 2006-12-26 CN CN 200620175277 patent/CN200989334Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103307016A (en) * | 2013-05-23 | 2013-09-18 | 君禾泵业股份有限公司 | Novel high and low pressure separation sealing type submersible pump |
| CN107349650A (en) * | 2017-07-19 | 2017-11-17 | 上海诺辉工程科技发展有限公司 | Auto purification type screw extrusion filter and its application method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20071212 |
|
| EXPY | Termination of patent right or utility model |