CN202280651U - Self-balancing multistage centrifugal pump with axial-force-free impellor - Google Patents
Self-balancing multistage centrifugal pump with axial-force-free impellor Download PDFInfo
- Publication number
- CN202280651U CN202280651U CN2011203809984U CN201120380998U CN202280651U CN 202280651 U CN202280651 U CN 202280651U CN 2011203809984 U CN2011203809984 U CN 2011203809984U CN 201120380998 U CN201120380998 U CN 201120380998U CN 202280651 U CN202280651 U CN 202280651U
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- China
- Prior art keywords
- pump
- impeller
- impellor
- self
- working surface
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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 self-balancing multistage centrifugal pump with an axial-force-free impellor. The pump is mainly formed by connecting a coupler, a bearing, a suction segment, a primary level impeller, a middle segment, an impeller, a guide blade, a disgorging segment, a stuffing box body, a bearing body, a labyrinth seal and other components through a pump shaft in series; and the projection areas of a front cover plate working surface of the impellor and the rear cover plate working surface of the impellor on a plane vertical to a shaft are equal. Because the projection areas of a front cover plate working surface of the impellor and the rear cover plate working surface of the impellor on the plane vertical to the shaft are equal, and the axial force of the pump is overcome depending on the self balancing of the impeller, thus self balancing of the multi-stage centrifugal pump is realized, the damage problem to the pump by the axial force is solved, thus the service life of the pump is prolonged, the working efficiency is improved, the cost is lowered, and the maintenance expense is saved.
Description
One, technical field
The utility model relates to a kind of self-balanced multiple-stage centrifugal pump, and especially a kind of impeller does not have the self-balanced multiple-stage centrifugal pump of axial force.
Two, background technique
Current, the multistage centrifugal pump of various applications can produce bigger axial force in the use.Because when impeller is worked, meeting impeller number of production axial force, particularly multistage centrifugal pump on impeller is many more, and it is serious more that its axial force produces.Tracing it to its cause is because the external profile diameter of the forward and backward cover plate of its impeller of multistage centrifugal pump of current application is identical, and the back shroud area is greater than the front shroud area, the axial force of producing during structures shape work.In order to eliminate axial force, adopt balancing drum or Balance disc device to carry out balance usually, but can't eliminate axial force fully at all, remaining axial force is born by bearing.Bearing bears bigger axial force and damages easily, and the Equilibrator wearing and tearing also can cause other rotor component wearing and tearing, thereby influences the normal working life and the working efficiency of pump, often changes the device maintenance expense that wear-out part has increased the user.
Three, summary of the invention
In order to solve the deficiency of existing technology, the purpose of the utility model provides the self-balanced multiple-stage centrifugal pump that a kind of impeller does not have axial force, improves the working life and the working efficiency of pump.
The technological scheme that realizes the purpose employing of the utility model is: this multistage centrifugal pump mainly is in series by pump shaft by parts such as coupling, bearing, suction casing, first stage impeller, stage casing, impeller, stator, Spit Section, stuffing box body, bearing support and labyrinth seals; The front shroud working surface of described impeller is equating perpendicular to the area of contour on the plane of axle with the back shroud working surface of impeller.
The invention has the beneficial effects as follows: because the front shroud working surface of impeller is equating perpendicular to the area of contour on the plane of axle with the back shroud working surface of impeller; Lean on impeller self balance to overcome axial force; Make multistage centrifugal pump realize self balancing, solved the destruction problem of axial force, thereby prolong the working life of pump pump; Improve working efficiency, saved maintenance expenses.
Four, description of drawings
Fig. 1 is the sectional view that the utility model impeller does not have the self-balanced multiple-stage centrifugal pump of axial force.
Five, embodiment
In the accompanying drawings, the utility model impeller self-balanced multiple-stage centrifugal pump of not having an axial force mainly leans on pump shaft 3 to be in series by parts such as coupling 1, bearing 2, suction casing 4, first stage impeller 5, stage casing 6, impeller 7, stator 8, Spit Section 9, stuffing box body 10, bearing support 11 and labyrinth seals 12; Front shroud 13 working surfaces of described impeller 7 are equating perpendicular to the area of contour on the plane of pump shaft 3 with back shroud 14 working surfaces of impeller 7, are removing current multistage centrifugal pump is used for offsetting pump with balancing drum or Balance disc device balance of axial force device.Because the forward and backward cover plate working surface of impeller is equating perpendicular to the area of contour on the plane of axle; Lean on impeller self balance to overcome the axial force of pump, make multistage centrifugal pump realize self balancing, solved the destruction problem of axial force pump; Thereby prolong the working life of pump; Improve working efficiency, reduced cost, saved maintenance expenses.
Claims (1)
1. an impeller does not have the self-balanced multiple-stage centrifugal pump of axial force, mainly leans on pump shaft (3) to be in series by coupling (1), bearing (2), suction casing (4), first stage impeller (5), stage casing (6), impeller (7), stator (8), Spit Section (9), stuffing box body (10), bearing support (11) and labyrinth seal parts such as (12); It is characterized in that: front shroud (13) working surface of described impeller (7) is equating perpendicular to the area of contour on the plane of pump shaft (3) with back shroud (14) working surface of impeller (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203809984U CN202280651U (en) | 2011-10-01 | 2011-10-01 | Self-balancing multistage centrifugal pump with axial-force-free impellor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203809984U CN202280651U (en) | 2011-10-01 | 2011-10-01 | Self-balancing multistage centrifugal pump with axial-force-free impellor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202280651U true CN202280651U (en) | 2012-06-20 |
Family
ID=46226821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203809984U Expired - Fee Related CN202280651U (en) | 2011-10-01 | 2011-10-01 | Self-balancing multistage centrifugal pump with axial-force-free impellor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202280651U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102330705A (en) * | 2011-10-01 | 2012-01-25 | 刘文喜 | Self-balancing multistage centrifugal pump without axial impeller |
-
2011
- 2011-10-01 CN CN2011203809984U patent/CN202280651U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102330705A (en) * | 2011-10-01 | 2012-01-25 | 刘文喜 | Self-balancing multistage centrifugal pump without axial impeller |
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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: 20120620 Termination date: 20141001 |
|
| EXPY | Termination of patent right or utility model |