CN2241242Y - Propeller pump - Google Patents
Propeller pump Download PDFInfo
- Publication number
- CN2241242Y CN2241242Y CN 95204071 CN95204071U CN2241242Y CN 2241242 Y CN2241242 Y CN 2241242Y CN 95204071 CN95204071 CN 95204071 CN 95204071 U CN95204071 U CN 95204071U CN 2241242 Y CN2241242 Y CN 2241242Y
- Authority
- CN
- China
- Prior art keywords
- impeller
- transmission shaft
- hole
- wheel hub
- face
- 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
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 24
- 238000007599 discharging Methods 0.000 claims abstract description 9
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 239000007788 liquid Substances 0.000 abstract description 11
- 238000007789 sealing Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model relates to a propeller pump, comprising an axial force balancing mechanism which is composed of a sealing ring, a balancing hole, etc. an axial balancing hole is arranged at the front end of a transmission shaft; moreover, the axial balancing hole is communicated with a balancing chamber through the radial balancing hole of the transmission shaft and a through groove at the back end of the hub of an impeller. Flow discharging holes which make an angle of 5 DEG-45 DEG are symmetrically arranged on the nut of an impeller. The flow discharging holes are communicated with the axial balancing hole of the transmission shaft through a communication cavity in the nut of an impeller. The utility model enables leaked liquid to be discharged in the flow direction of main liquid flow; therefore, the impact of the leaked liquid on the main liquid flow is reduced. The utility model has the advantages of high anti-cavitation performance. Simultaneously, power loss caused by the balancing hole of the back cover plate of the impeller is eliminated.
Description
The utility model relates to a kind of pump, especially a kind of vane pump.
Vane pump if do not eliminate or the axial force of balanced action on impeller, will cause the rotor axial string moving with the retaining element contact friction, to making damage parts owing to forming axial force in the reason work such as the impeller front and rear cover plate is asymmetric, and pump can not be worked; At present balancing axial thrust is except that adopting forms such as thrust-bearing, back blade, adopts maximum seal rings of setting up exactly on back shroud of impeller, and offer the structural type balancing axial thrust of equalizing orifice with the communication counter balance pocket on back shroud of impeller; This kind structural type is simple and reliable, but impact, destroyed main liquid through the leakage flow of equalizing orifice mutually with the main liquid stream that enters impeller and flow normal flowing state, the anti-cavitation performance of pump is descended, the equalizing orifice that the while back shroud of impeller is offered, cause power loss during work, reduce the working efficiency of pump.
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art part, and provides a kind of equalizing orifice leakage flow can not destroy main liquid stream proper flow state, thereby improves the vane pump of pump cavitation resistive property and working efficiency.
The purpose of this utility model can realize by following measure:
A kind of vane pump comprises the axial force balance mechanism that seal ring, equalizing orifice etc. are formed, and offers the longitudinal balance hole at the transmission shaft front end, and communicates with counter balance pocket by radial equilibrium hole and impeller hub rear end groove; Symmetry offers and the discharge orifice that axially becomes 5 °～45 on streamlined impeller nut, can be set between 15 °～30 ° for ease of processing this angle, and discharge orifice communicates to equalizing orifice with transmission shafts by communicated cavity in the streamlined impeller nut.
The utility model also can be offered the annular reservoir that communicates with discharge orifice at streamlined impeller nut end face, and reservoir outer shroud end face and impeller hub front-end face or impeller hub streamiline surface form ring-like flow discharging seam.
The purpose of this utility model also can realize by following measure:
A kind of vane pump comprises the axle equilibrium of forces mechanism that seal ring, equalizing orifice etc. are formed, and offers the longitudinal balance hole at the transmission shaft front end, and communicates with counter balance pocket by transmission shaft radial equilibrium hole and impeller hub rear end groove; Impeller nut is fastened on impeller on the transmission shaft, at the transmission shaft front end cowling is installed, the longitudinal balance hole communicates by the reservoir that forms in radial direction through hole and the cowling, and cowling end face and impeller hub front-end face or impeller hub streamiline surface form ring-like flow discharging seam.
The utility model is with the seal ring leakage fluid,---transmission shaft radial equilibrium hole---transmission shafts is drawn to equalizing orifice through impeller hub rear end groove, release from the suitable main liquid stream flow direction of main liquid stream inlet, reduce the impact of main liquid being flowed, thereby improve the pump anti-cavitation performance down to the stream of stopping a leak; Eliminate the power loss that the back shroud of impeller equalizing orifice causes simultaneously, improve the efficient of pump.
The utlity model has following advantage:
1, leakage flow can not influence normally surging of main liquid stream, thereby can improve the pump anti-cavitation performance.
2, equalizing orifice is opened on the transmission shaft through impeller hub, has eliminated equalizing orifice and be opened in the loss that back shroud of impeller causes, thus the efficient of raising pump.
3, simple in structure, the reliable operation of the utility model.
The utility model accompanying drawing drawing is described as follows:
Fig. 1 is the utility model structure I schematic representation
The streamlined impeller nut 4-of 1-pump housing 2-impeller 3-communicated cavity
5-discharge orifice 6-sealing 7-counter balance pocket 8-groove
10-transmission shaft 11-longitudinal balance hole, 9-radial equilibrium hole
Fig. 2 is the utility model structure I I partial schematic diagram
The 12-reservoir
Fig. 3 is the utility model structure III partial schematic diagram
13-tight fixed bolt 14-radial direction through hole 15-impeller nut 16-cowling
Below in conjunction with the accompanying drawing illustrated embodiment the utility model is further described:
Shown in accompanying drawing 1,2, a kind of vane pump, comprise the axial force balance mechanism that seal ring (6), equalizing orifice (9,11) etc. are formed, offer longitudinal balance hole (11) at transmission shaft (10) front end, and communicate with counter balance pocket (7) by transmission shaft (10) radial equilibrium hole (9) and impeller (2) wheel hub rear end groove (8); Streamlined impeller nut (3) is gone up symmetry and is offered and the discharge orifice (5) that axially becomes 30 ° of angles, and discharge orifice (5) communicates with transmission shaft (10) longitudinal balance hole (11) by the interior communicated cavity of streamlined impeller nut (3) (4); Offer the annular reservoir (12) that communicates with discharge orifice (5) at streamlined impeller nut (3) end face, reservoir (12) end face and impeller (2) wheel hub end face or impeller (2) wheel hub streamiline surface form ring-like flow discharging seam.In the utility model, equalizing orifice (9,11), discharge orifice (5) or ring-like flow discharging seam area of passage should be five times in the area in seal ring (6) gap.
Shown in accompanying drawing 1,3, a kind of vane pump, comprise the axial force balance mechanism that seal ring (6), equalizing orifice (9,11) etc. are formed, in the longitudinal balance hole (11) that transmission shaft (10) front end is offered, communicate with counter balance pocket (7) by transmission shaft (10) radial equilibrium hole (9) and impeller (2) wheel hub rear end groove (8); Hexangle type impeller nut (15) is fastened on impeller (2) on the transmission shaft (10), by tight fixed bolt (13) streamlined cowling (16) is installed at transmission shaft (10) front end, longitudinal balance hole (11) communicates with the reservoir of formation in the cowling (16) by radial direction through hole (14), and cowling (16) end face and impeller (2) wheel hub end face or impeller (2) wheel hub streamiline surface form ring-like flow discharging seam.
Claims (4)
1, a kind of vane pump, comprise the axial force balance mechanism that seal ring (6), equalizing orifice (9,11) etc. are formed, it is characterized in that: offer longitudinal balance hole (11) at transmission shaft (10) front end, and communicate with counter balance pocket (7) by transmission shaft (10) radial equilibrium hole (9) and impeller (2) wheel hub rear end groove (8); Go up symmetry at streamlined impeller nut (3) and offer and the discharge orifice (5) that axially becomes 5 °～45, discharge orifice (5) communicates with transmission shaft (10) longitudinal balance hole (11) by the interior communicated cavity of streamlined impeller nut (3) (4).
2, vane pump according to claim 1, it is characterized in that: offer the annular reservoir (12) that communicates with discharge orifice (5) at streamlined impeller nut (3) end face, reservoir (12) outer shroud end face and impeller (2) wheel hub front-end face or impeller (2) wheel hub streamiline surface form ring-like flow discharging seam.
3, vane pump according to claim 1 is characterized in that: discharge orifice (5) that the last symmetry of streamlined impeller nut (3) is offered and axial angle are between 15 °～30 °.
4, a kind of vane pump, comprise the axial force balance mechanism that seal ring (6), equalizing orifice (9,10) etc. are formed, it is characterized in that: offer longitudinal balance hole (11) at transmission shaft (10) front end, and communicate with counter balance pocket (7) by the groove (8) on transmission shaft (10) radial equilibrium hole (9) and impeller (2) wheel hub; Impeller nut (15) is fastened on impeller (2) on the transmission shaft (10), at transmission shaft (10) front end cowling (16) is installed, longitudinal balance hole (11) communicates with the reservoir of formation in the cowling (16) by radial direction through hole (14), and cowling (16) end face and impeller (2) wheel hub front-end face or impeller (2) wheel hub streamiline surface form ring-like flow discharging seam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95204071 CN2241242Y (en) | 1995-03-04 | 1995-03-04 | Propeller pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95204071 CN2241242Y (en) | 1995-03-04 | 1995-03-04 | Propeller pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2241242Y true CN2241242Y (en) | 1996-11-27 |
Family
ID=33856692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95204071 Expired - Fee Related CN2241242Y (en) | 1995-03-04 | 1995-03-04 | Propeller pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2241242Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107806439A (en) * | 2016-09-09 | 2018-03-16 | 上海连成（集团）有限公司 | The axial force balance structure of centrifugal water pump |
| CN109340198A (en) * | 2018-12-24 | 2019-02-15 | 济南风机厂有限责任公司 | The online cleaning wheel hub of blower |
| CN111033053A (en) * | 2017-08-31 | 2020-04-17 | 福斯管理公司 | Axial thrust balancing device |
| CN112524085A (en) * | 2020-11-26 | 2021-03-19 | 江苏大学 | Internal circulation type centrifugal pump axial force balance structure with multiple back mouth rings |
-
1995
- 1995-03-04 CN CN 95204071 patent/CN2241242Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107806439A (en) * | 2016-09-09 | 2018-03-16 | 上海连成（集团）有限公司 | The axial force balance structure of centrifugal water pump |
| CN107806439B (en) * | 2016-09-09 | 2024-02-23 | 上海连成（集团）有限公司 | Axial force balancing structure of centrifugal water pump |
| CN111033053A (en) * | 2017-08-31 | 2020-04-17 | 福斯管理公司 | Axial thrust balancing device |
| CN109340198A (en) * | 2018-12-24 | 2019-02-15 | 济南风机厂有限责任公司 | The online cleaning wheel hub of blower |
| CN109340198B (en) * | 2018-12-24 | 2024-02-23 | 济南风机厂有限责任公司 | On-line cleaning hub for fan |
| CN112524085A (en) * | 2020-11-26 | 2021-03-19 | 江苏大学 | Internal circulation type centrifugal pump axial force balance structure with multiple back mouth rings |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: PATENTEE; FROM: XIN YULIN TO: CHINESE ACADEMY OF SCIENCES LANZHOU INSTITUTE OF GEOLOGY |
|
| CP03 | Change of name, title or address |
Address after: 730000 Lanzhou Donggang West Road No. 324 Li Jietong. Patentee after: Lanzhou Inst. of Geology, Chinese Academy of Sciences Address before: No. 234, Tianshui Road, Lanzhou Patentee before: Xin Yulin |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |