CN201155479Y - Axial force balancing device for multi-stage pump - Google Patents
Axial force balancing device for multi-stage pump Download PDFInfo
- Publication number
- CN201155479Y CN201155479Y CNU2007201850282U CN200720185028U CN201155479Y CN 201155479 Y CN201155479 Y CN 201155479Y CN U2007201850282 U CNU2007201850282 U CN U2007201850282U CN 200720185028 U CN200720185028 U CN 200720185028U CN 201155479 Y CN201155479 Y CN 201155479Y
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- CN
- China
- Prior art keywords
- pump
- bearing
- axial force
- pump body
- multistage
- 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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Abstract
The utility model relates to a multistage pump axial force balance device which comprises a pump body and a pump shaft arranged in the pump body by a supporting bearing. Bearing end covers are arranged at the two ends of the pump body. The multistage pump axial force balance device is characterized in that, on the pump shaft, a thrust bearing is arranged outside the supporting bearing at a water-inlet end in the pump body; and the bearing end cover arranged at the water-inlet end presses on the thrust bearing. The multistage pump axial force balance device has the advantages that a whole rotor can run under the non-fluctuation condition, thereby reducing the wear of spare parts, prolonging service lives of bearings and all rotating components, saving energy and improving efficiency; besides, a balance disk and a balance ring are not be used any more, thereby saving material and reducing the manufacturing cost; moreover, since the whole rotor does not rotate up and down, no collision happens between the alloy surfaces of the dynamic ring and the stable ring of a multistage pump, which are sealed mechanically, thereby guaranteeing no water leakage on the mechanical seal and greatly prolonging the service life of the mechanical seal.
Description
Technical field
The utility model is particularly related to a kind of multi-stage pump axial force balance device.
Background technique
It is very extensive that multistage pump is used, because the pressure of multistage pump is higher, the synthesis of the axial force that affacts at different levels is bigger, so concerning multistage pump, it is particularly important that the balancing axial thrust problem seems.At present the axial force of balance multistage pump has following three kinds of methods substantially: 1, when running wheel is even number, come balance can impeller is arranged to two groups of back-to-back forms, though this method balance axial force, but increased multistage pump structure and manufacture cost; 2, establish the balance cylinder at the back side of each running wheel, and hole on the back shroud of impeller, this method balancing axial thrust is separated never thorough; 3, adopting Balance disc and gimbal balancing axial thrust is the most popular a kind of mode of multistage pump, as the GC pump, D type pump and DG pump etc., after multistage pump has produced axial force, Balance disc is just with the direction play of rotor to end thrust, produce with static gimbal and to contact and rub, thereby eliminated axial force, but adopt this balance mode Balance disc and whole rotor that the activity amount of scurrying of 3～5mm is arranged, at starting mode of pump, stop or flow lift can produce vicissitudinous the time and impacts and collision, increase parts depreciation, consumption of power, in addition, Balance disc and gimbal all are to make with stainless steel or bronze, damage easily and often replacing.
Summary of the invention
The purpose of this utility model is to overcome the deficiency of above technology, providing a kind of works whole rotor under the situation of no play, reduce parts depreciation, prolong each parts working life, save raw material and reduce the multi-stage pump axial force balance device of manufacture cost.
The utility model is achieved in that it comprises the pump housing and is located at pump shaft in the pump housing by spring bearing, two ends at the pump housing are provided with bearing (ball) cover, its special way is: the spring bearing outside that is positioned at pump housing feed-water end on pump shaft is provided with thrust-bearing, and the bearing (ball) cover that is positioned at feed-water end is pressed on the thrust-bearing.
The utility model has the advantages that: whole rotor is worked under the situation of no play, reduce parts depreciation, prolonged working life of bearing and each rotatable parts, energy saving, raise the efficiency; 2, cancellation Balance disc and gimbal are saved raw material and are reduced manufacture cost; 3, because whole rotor does not have play, make the rotating ring and the stationary ring alloy face absence of collision of multistage pump mechanical seal, guaranteed that mechanical seal is water-tight, increased the working life of mechanical seal greatly.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Among the figure: the pump housing 1, pump shaft 2, spring bearing 3, thrust-bearing 4, bearing (ball) cover 5, impeller 6.
Embodiment
As shown in the figure, this multi-stage pump axial force balance device comprises the pump housing 1 and is installed in pump shaft 2 in the pump housing 1 by spring bearing 3, be provided with bearing (ball) cover 5 at the two ends of the pump housing 1, spring bearing 3 outsides that are positioned at the pump housing 1 feed-water end on pump shaft 2 are provided with thrust-bearing 4, and the bearing (ball) cover 5 that is positioned at feed-water end is pressed on the thrust-bearing 4.
During work, the axial force that impellers 6 at different levels are produced promotes pump shaft 2 to the pump housing 1 feed-water end, and this responsive to axial force obtains balance to thrust-bearing 4.
Claims (1)
1, a kind of multi-stage pump axial force balance device, comprise the pump housing and be located at pump shaft in the pump housing by spring bearing, two ends at the pump housing are provided with bearing (ball) cover, it is characterized in that: the spring bearing outside that is positioned at pump housing feed-water end on pump shaft is provided with thrust-bearing, and the bearing (ball) cover that is positioned at feed-water end is pressed on the thrust-bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201850282U CN201155479Y (en) | 2007-12-21 | 2007-12-21 | Axial force balancing device for multi-stage pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201850282U CN201155479Y (en) | 2007-12-21 | 2007-12-21 | Axial force balancing device for multi-stage pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201155479Y true CN201155479Y (en) | 2008-11-26 |
Family
ID=40103263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201850282U Expired - Fee Related CN201155479Y (en) | 2007-12-21 | 2007-12-21 | Axial force balancing device for multi-stage pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201155479Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102350266A (en) * | 2011-08-03 | 2012-02-15 | 湛江市恒润机械有限公司 | Thrust bearing balance device |
| CN106939905A (en) * | 2017-05-17 | 2017-07-11 | 江苏大学 | A kind of self-balancing goes with each other all the time centrifugal pump structure |
-
2007
- 2007-12-21 CN CNU2007201850282U patent/CN201155479Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102350266A (en) * | 2011-08-03 | 2012-02-15 | 湛江市恒润机械有限公司 | Thrust bearing balance device |
| CN102350266B (en) * | 2011-08-03 | 2013-08-21 | 湛江市恒润机械有限公司 | Thrust bearing balance device |
| CN106939905A (en) * | 2017-05-17 | 2017-07-11 | 江苏大学 | A kind of self-balancing goes with each other all the time centrifugal pump structure |
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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: 20081126 Termination date: 20100121 |