CN205559355U - Built -in axial force balancing unit's centrifugal pump of horizontal axis - Google Patents
Built -in axial force balancing unit's centrifugal pump of horizontal axis Download PDFInfo
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- CN205559355U CN205559355U CN201620268576.0U CN201620268576U CN205559355U CN 205559355 U CN205559355 U CN 205559355U CN 201620268576 U CN201620268576 U CN 201620268576U CN 205559355 U CN205559355 U CN 205559355U
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Abstract
The utility model discloses a built -in axial force balancing unit's centrifugal pump of horizontal axis, it includes impeller, the pump body, balancing unit, nut, mechanical seal and pump shaft. The terminal surface flushed in pump shaft cantilever end plane and impeller were placed in the middle, the imported inner chamber of the pump body be equipped with between two parties by the common connecting axle of the radial rib of equipartition to the cover, the axial cover is in same axis with the pump shaft on, the nut for the balancing unit that assigns into in the axial cover is locked, the balancing unit that is the cantilever form is with the impeller in placed in the middle between the terminal surface, but is equipped with and leans on sealing up pair of sealed just relative rotation by the elasticity top. The utility model discloses built -in balancing unit is in pump body import intracavity, has directly occupied the space of terminal surface in the impeller is placed in the middle to this space of offsetting the back shroud of impeller configuration, this structure realize that the malleation axial force and the backpressure axial force that bear respectively the impeller both sides equal, make pump shaft and support bearings operation matter attitude shown and improve, thereby improve the life of supporting pump greatly.
Description
Technical field
This utility model relates to a kind of hydraulic structure design, and specifically, this utility model relates to the structure design of a kind of centrifugal pump auxiliary equipment, the centrifugal pump of horizontal axis of a kind of built-in axial thrust balancing devices.
Background technology
Centrifugal pump of horizontal axis belongs to conventional pump product, is a kind of pump that on market, application amount is maximum.Centrifugal pump of horizontal axis limits because of structure, the front shroud area ratio back shroud area of its supporting impeller is smaller, under import pressure medium effect, front shroud of impeller bears normal pressure, thus produces the malleation axial force of respective amount, and impeller inlet is pointed to along pump shaft in this axial force direction.Meanwhile, back shroud of impeller bears back pressure, thus produces the back pressure axial force of respective amount, and pump shaft direction is pointed to from impeller inlet in this axial force direction.Under nominal situation, the malleation axial force of centrifugal pump of horizontal axis is in opposite direction with back pressure axial force, and back pressure axial force is more than malleation axial force.If two kinds of axial forces differ greatly in pump, operating mode will be deteriorated, bring the problem of maximum to be to increase the load of pump shaft block bearing, and the reliability of pump is negatively affected.In view of the foregoing, the centrifugal pump of horizontal axis run under high back pressure operating mode, unnecessary back pressure axial force is reduced or eliminated with greater need for being improved by structure, thus realizes improving the operation matter state of pump, improve the purpose in service life.
Utility model content
The axial force imbalance problem that this utility model bears mainly for impeller both ends of the surface during the horizontal centrifugal pump operation of prior art, the centrifugal pump of horizontal axis of a kind of built-in axial thrust balancing devices is proposed, this configuration structure is simply, making is easy, run balance, it is possible to automotive resistance back pressure axial force and the difference of malleation axial force.
This utility model is achieved through the following technical solutions technical goal.
The centrifugal pump of horizontal axis of built-in axial thrust balancing devices, it includes impeller, the pump housing, bascule, nut, mechanical seal and pump shaft.Described impeller and mechanical seal pump shaft series winding are connected in the pump housing.It thes improvement is that: described pump shaft cantilever end plane inner face placed in the middle with impeller flushes.The import inner chamber of the described pump housing is provided with between two parties and is jointly connected axially set by uniform radial rib, at axial set and pump shaft on the same axis, assign into the bascule nut check in axially overlapping, between cantilever-shaped bascule and impeller inner face placed in the middle, it is provided with by elastic top by the sealing pair sealed and can rotate against.
In said structure, described bascule is a kind of axially molectron, and it includes axis body, stationary seat, dynamic seat, rotating ring, stationary ring and spring.Described dynamic seat is tightly connected with large end face and impeller inner face placed in the middle, thus constitutes dynamic seat with being linked that impeller rotates.Described axis body the inner is provided with and seals the axial blind hole installing stationary seat, is made axial elasticity supporting by spring between stationary seat and axis body end face, and stationary seat actively reclines the end face of dynamic seat under the action of the spring, the sealing pair that thus composition can mutually rotate for a pair.
In said structure, described dynamic seat inlays rotating ring relative to the end face of stationary seat, and stationary seat relatively moves the end face of seat and inlays stationary ring.
In said structure, described rotating ring and stationary ring are ceramic or hard metal article.
In said structure, described spring is cylinder-shaped compression spring.
This utility model compared with prior art, has the positive effect that:
1, built-in bascule is a kind of sealing device being automatically obtained between end face by elastic stretch, its simple in construction, make easy, easy for installation；
2, in bascule is in pump housing import, directly occupy the space of impeller inner face placed in the middle, it offsets, with bascule axial projective area, mechanical seal and the axial projective area of pump shaft that back shroud of impeller is installed, because impeller both sides real area is more or less the same, under the conditions of identical pressure working condition, malleation axial force and back pressure axial force that impeller both sides carry respectively are almost equal；
3, after pump configuration bascule, directly improve pump shaft and block bearing runs matter state, be conducive to improving the service life of pump.
Accompanying drawing explanation
Fig. 1 is this utility model structural representation.
Fig. 2 is the structure enlarged diagram of bascule shown in sequence number 3 in Fig. 1.
Detailed description of the invention
Below according to accompanying drawing and in conjunction with the embodiments, the utility model is described in further detail.
The centrifugal pump of horizontal axis of the built-in axial thrust balancing devices shown in Fig. 1, is to apply the embodiment in submersible ballast tank, and it includes impeller 1, the pump housing 2, bascule 3, nut 4, mechanical seal 5 and pump shaft 6.Described impeller 1 and mechanical seal 5 pump shaft 6 series winding are connected in the pump housing 2, install pump shaft 6 cantilever end plane inner face placed in the middle with impeller 1 after putting in place and flush.Impeller 1 under this situation freedom of axial movement on pump shaft 5 is provided with restriction, it is in a kind of floating connection, in order to accomplish can the most axially to position impeller, balance impeller 1 front and rear cover plate can be played again and bear the effect of axial force, this utility model is provided with between two parties at the import inner chamber of the pump housing 2 and is jointly connected axially set 2.2 by uniform radial rib 2.1, at this axial set 2.2 and pump shaft 6 on the same axis, bascule 3 assigned in axial set 2.2 and lock with nut 4.It is provided with in cantilever-shaped bascule 3 and between impeller 1 inner face placed in the middle by elastic top by the sealing pair sealed and can rotate against.Bascule in this utility model is a kind of axially molectron, and it includes axis body 3.1, stationary seat 3.2, dynamic seat 3.3, rotating ring 3.4, stationary ring 3.5 and spring 3.6.Described dynamic seat 3.3 is a kind of disc-shaped component, is tightly connected with large end face inner face placed in the middle with impeller 1 during installation.This part is sealedly connected with two effects, and one is to accomplish dynamic sealing between seat 3.3 and impeller 1 faying face, and two is to accomplish that dynamic seat 3.3 rotates with impeller 1.Described axis body 3.1 is the main component of bascule 3, and one end inwardly is provided with axial blind hole, and this axial blind hole is used for sealing installation stationary seat 3.2, is made axial elasticity supporting by spring 3.6 between stationary seat 3.2 and axial blind hole.The spring 3.6 of the present embodiment application is cylinder-shaped compression spring, and under the effect of spring 3.6, stationary seat 3.2 is the most overhanging, thus realizes stationary seat 3.2 and actively recline the end face of dynamic seat 3.3, the sealing pair that thus composition can rotate against for a pair.
This utility model is in order to improve the gyrating mass of sealing pair, sealing effectiveness and service life further, and the end face at the dynamic relative stationary seat 3.2 of seat 3.3 inlays rotating ring 3.4, and stationary seat 3.2 relatively moves the end face of seat 3.3 and inlays stationary ring 3.5.In the present embodiment, rotating ring 3.4 and stationary ring 3.5 are all ceramics, and this material has overstable physical characteristic, particularly has very high-wear resistance.Both are mirrored by faying face, and frictional dissipation is minimum, good sealing effect, fully meets the supporting requirement of submersible.
The built-in bascule 3 of this utility model is in the pump housing 2 snout cavity, directly occupy the space of impeller 1 inner face placed in the middle, it offsets, with bascule 3 axial projective area, mechanical seal 5 and the axial projective area of pump shaft 6 that impeller 1 back shroud is installed, because impeller 1 both sides real area is more or less the same, under the conditions of identical pressure working condition, malleation axial force and back pressure axial force that impeller 1 both sides carry respectively are almost equal, making pump shaft 6 and block bearing run matter state to significantly improve, its result increases the service life of supporting pump.
Claims (6)
1. a centrifugal pump of horizontal axis for built-in axial thrust balancing devices, it includes impeller (1), the pump housing (2), bascule (3), nut (4), mechanical seal (5) and pump shaft (6)；Described impeller (1) and mechanical seal (5) pump shaft (6) series winding are connected in the pump housing (2)；It is characterized in that: described pump shaft (6) cantilever end plane inner face placed in the middle with impeller (1) flushes；The import inner chamber of the described pump housing (2) is provided with between two parties and is jointly connected axially set (2.2) by uniform radial rib (2.1), axially set (2.2) is with pump shaft (6) place on the same axis, assign into bascule (3) nut (4) locking axially overlapped in (2.2), in cantilever-shaped bascule (3) and between impeller (1) inner face placed in the middle, it is provided with by elastic top by the sealing pair sealed and can rotate against.
The centrifugal pump of horizontal axis of built-in axial thrust balancing devices the most according to claim 1, it is characterized in that: described bascule (3) is a kind of axially molectron, it includes axis body (3.1), stationary seat (3.2), dynamic seat (3.3), rotating ring (3.4), stationary ring (3.5) and spring (3.6)；Described dynamic seat (3.3) is tightly connected with large end face and impeller (1) inner face placed in the middle, thus constitutes dynamic seat (3.3) with being linked that impeller (1) rotates；Described axis body (3.1) the inner is provided with and seals the axial blind hole installing stationary seat (3.2), axial elasticity supporting is made by spring (3.6) between stationary seat (3.2) and axial blind hole, under the effect of spring (3.6), stationary seat (3.2) is the most overhanging, thus realize stationary seat (3.2) and actively recline the end face of dynamic seat (3.3), thus constitute the sealing pair that can rotate against for a pair.
The centrifugal pump of horizontal axis of built-in axial thrust balancing devices the most according to claim 2, it is characterized in that: the end face of described dynamic seat (3.3) stationary seat (3.2) relatively inlays rotating ring (3.4), and stationary seat (3.2) relatively moves the end face of seat (3.3) and inlays stationary ring (3.5).
4. according to the centrifugal pump of horizontal axis of the built-in axial thrust balancing devices described in Claims 2 or 3, it is characterised in that: described rotating ring (3.4) and stationary ring (3.5) are ceramic.
5. according to the centrifugal pump of horizontal axis of the built-in axial thrust balancing devices described in Claims 2 or 3, it is characterised in that: described rotating ring (3.4) and stationary ring (3.5) are hard metal article.
The centrifugal pump of horizontal axis of built-in axial thrust balancing devices the most according to claim 2, it is characterised in that: described spring (3.6) is cylinder-shaped compression spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620268576.0U CN205559355U (en) | 2016-04-05 | 2016-04-05 | Built -in axial force balancing unit's centrifugal pump of horizontal axis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620268576.0U CN205559355U (en) | 2016-04-05 | 2016-04-05 | Built -in axial force balancing unit's centrifugal pump of horizontal axis |
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| Publication Number | Publication Date |
|---|---|
| CN205559355U true CN205559355U (en) | 2016-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620268576.0U Active CN205559355U (en) | 2016-04-05 | 2016-04-05 | Built -in axial force balancing unit's centrifugal pump of horizontal axis |
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| CN (1) | CN205559355U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105736445A (en) * | 2016-04-05 | 2016-07-06 | 江苏振华泵业制造有限公司 | Horizontal centrifugal pump with built-in axial force balancing device |
| EP4001658A1 (en) * | 2020-11-24 | 2022-05-25 | Sulzer Management AG | Rotary pump for conveying a fluid |
-
2016
- 2016-04-05 CN CN201620268576.0U patent/CN205559355U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105736445A (en) * | 2016-04-05 | 2016-07-06 | 江苏振华泵业制造有限公司 | Horizontal centrifugal pump with built-in axial force balancing device |
| EP4001658A1 (en) * | 2020-11-24 | 2022-05-25 | Sulzer Management AG | Rotary pump for conveying a fluid |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 225500 Jiangyan Avenue No. 9, Jiangyan District, Taizhou City, Jiangsu Province (Jiangsu Zhenhua Pump Manufacturing Co., Ltd.) Patentee after: Jiangsu Zhenhua Pump Industry Manufacturing Co., Ltd. Address before: 225500 Jiangyan Avenue, Jiangyan Economic Development Zone, Taizhou City, Jiangsu Province (Zhenhua Pump Industry, Jiangsu Province) Patentee before: Jiangsu Zhenhua pump Limited by Share Ltd |
|
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: No.9 Jiangyan Avenue, Jiangyan Economic Development Zone, Taizhou City, Jiangsu Province (Jiangsu Zhenhua Haike Equipment Technology Co., Ltd.) Patentee after: Jiangsu Zhenhua Haike Equipment Technology Co., Ltd Address before: 225500 Jiangsu Zhenhua Pump Manufacturing Co., Ltd., Jiangyan Road, Jiangyan District, Jiangsu, Taizhou 9 Patentee before: JIANGSU ZHENHUA PUMP MANUFACTURING Co.,Ltd. |
|
| CP03 | Change of name, title or address |