CN202707620U - Novel pump body with multiple division plates - Google Patents
Novel pump body with multiple division plates Download PDFInfo
- Publication number
- CN202707620U CN202707620U CN 201220327614 CN201220327614U CN202707620U CN 202707620 U CN202707620 U CN 202707620U CN 201220327614 CN201220327614 CN 201220327614 CN 201220327614 U CN201220327614 U CN 201220327614U CN 202707620 U CN202707620 U CN 202707620U
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- CN
- China
- Prior art keywords
- impeller
- division plates
- dividing plate
- spiral case
- polylith
- Prior art date
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- Expired - Fee Related
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Abstract
The utility model discloses a novel pump body with multiple division plates which comprises a volute and a plurality of division plates. A spiral flow channel is arranged inside the volute, the plurality of division plates are arranged inside the runner from the position of a cut-water along the circumference of an impeller, and the plurality of division plates are arranged inside the volute with equal angles of difference along the circumferential direction of the impeller. The plurality of division plates and an outer wall of the volute are in axial symmetry around the impeller, and the plurality of division plates are arranged along the circumference of the impeller and are not overlapped with each other. The novel pump body with multiple division plates is simple in casting and reasonable in structure, reduces the vibration of a pump shaft, and improves running stability and running efficiency.
Description
Technical field
The utility model relates to a kind of novel many dividing plates pump housing.
Background technique
Pumping chamber is the important flow passage components of centrifugal pump, and spiral pressurized water chamber (spiral case) has that efficient district is wide, and hydraulic loss is little, and technology capability is good, allows the obviously advantage such as cutting impeller external diameter.When the scroll casing type pump turns round, be not subjected to radial force under design conditions, but when departing from the operating point running, pressure is destroyed along the axisymmetric distribution of impeller, impeller is subject to larger radial force, particularly high-capacity pump.Act on the radial force of impeller, make pump shaft be subjected to the alternating stress effect, produce amount of deflection, make in the pump running and produce vibration and noise, destroy shaft seal, cause leakage, badly influence stability and the operational efficiency of pump running.
Centrifugal pump balance radial force adopts the double volute structure usually, and the structure that large-scale single-stage pump adopts stator to add volute chamber is sometimes come the radial force of balanced action on impeller.Adopt stator to add the structure of volute chamber, the balance radial force is desirable not to the utmost.And two turbocharger housing structure (see figure 1)s are exactly to arrange long dividing plate 2 in spiral case, form two spiral cases of 180 ° that stagger, because symmetrical configuration, fluid produces the radial thrust that both direction balances each other mutually on the contrary to impeller.But double volute structure dividing plate is longer, and spiral casing flow passage is long and narrow, and the casting difficulty is large, and simultaneously, its radial force is synthetic by two power, and pump is when different operating mode operation conversion, and the radial force direction changes greatly, and pump shaft produces vibration, and stable type is relatively poor.
Summary of the invention
For the centrifugal pump that overcomes existing balance radial force exists spiral casing flow passage long and narrow, the casting difficulty is large, pump radial force direction when different operating mode operation conversion changes greatly simultaneously, pump shaft produces vibration, the relatively poor deficiency that waits of stable type, the utility model provides a kind of and casts conveniently, novel many dividing plates pump housing of efficient, steady balance radial force.
The technical solution adopted in the utility model is:
Novel many dividing plates pump housing, comprise spiral case and polylith dividing plate, be provided with a spiral flow channel in the described spiral case, it is characterized in that: begin to be circumferentially with the polylith dividing plate along impeller from the cut water place in the described runner, described dividing plate circumferentially waits declinate to be arranged in the described spiral case along impeller.
Further, the described dividing plate of polylith and spiral case outer wall are symmetrical around impeller shaft.
Further, the described dividing plate of polylith circumferentially distributes not overlapping along impeller.
Preferably, z is the impeller blade number, and the breviseptum number that then arranges is the z-1 piece, and z-1 piece breviseptum begins to differ the angle of 360 °/z successively along the impeller circumferential arrangement from the cut water place.
The beneficial effects of the utility model are embodied in: reduced spiral casing flow passage length, reduced the casting difficulty, when the pump operation operating mode changes, the radial force direction is changed less, more effective, balance radial force stably, reduced the vibration of pump shaft, improved operation stability and operational efficiency.
Description of drawings
Fig. 1 is the structural representation of the existing pump housing.
Fig. 2 is the utility model overall structure schematic diagram.
Embodiment
With reference to Fig. 2, novel many dividing plates pump housing comprises spiral case 1 and polylith dividing plate 2, is provided with a spiral flow channel 5 in the described spiral case 1, begin to be circumferentially with polylith dividing plate 2 along impeller 3 from cut water 4 places in the described runner 5, described dividing plate 2 circumferentially waits declinate to be arranged in the described spiral case 1 along impeller 3.
Further, the described dividing plate 2 of polylith distributes around impeller 3 axisymmetric with spiral case 1 outer wall.
Further, the described dividing plate 2 of polylith circumferentially distributes not overlapping along impeller 3.
Preferably, z is impeller 3 numbers of blade, and breviseptum 2 numbers that then arrange are the z-1 piece, and z-1 piece breviseptum 2 begins to differ the angle of 360 °/z successively along impeller 3 circumferential arrangement from cut water 4 places.
With reference to Fig. 2, take impeller 3 number of blade z=6 as example, successively spiral case 1 interior along impeller 3 circumferentially begin to differ from cut water 4 places 360 °/6 namely 60 ° wait declinates to arrange five dividing plates 2, form the novel balanced radial force pump housing with 6 road spiral cases.Fluid gets rid of into 6 road spiral cases after impeller 3 actings, through spiral case kinetic energy is converted to pressure energy, liquid has radial pressure to impeller 3 in every section spiral case, impeller 3 radial forces are that 6 radial pressures are made a concerted effort, because 6 sections spiral cases are arranged symmetrically with, it makes a concerted effort to be substantially zero, and operating conditions is when changing, impeller force in radial direction changes less, moves more steady.
The described content of this specification embodiment only is enumerating the way of realization of model utility design; protection domain of the present utility model should not be regarded as only limiting to the concrete form that embodiment states, protection domain of the present utility model also reaches the equivalent technologies means that design can be expected according to the utility model in those skilled in the art.
Claims (3)
1. novel many dividing plates pump housing, comprise spiral case and polylith dividing plate, be provided with a spiral flow channel in the described spiral case, it is characterized in that: begin to be circumferentially with the polylith dividing plate along impeller from the cut water place in the described runner, described dividing plate circumferentially waits declinate to be arranged in the described spiral case along impeller.
2. novel many dividing plates pump housing as claimed in claim 1, it is characterized in that: the described dividing plate of polylith and spiral case outer wall are symmetrical around impeller shaft.
3. novel many dividing plates pump housing as claimed in claim 1 or 2 is characterized in that: the described dividing plate of polylith circumferentially distributes not overlapping along impeller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220327614 CN202707620U (en) | 2012-07-06 | 2012-07-06 | Novel pump body with multiple division plates |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220327614 CN202707620U (en) | 2012-07-06 | 2012-07-06 | Novel pump body with multiple division plates |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202707620U true CN202707620U (en) | 2013-01-30 |
Family
ID=47587927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220327614 Expired - Fee Related CN202707620U (en) | 2012-07-06 | 2012-07-06 | Novel pump body with multiple division plates |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202707620U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103982468A (en) * | 2014-04-28 | 2014-08-13 | 北京中水科水电科技开发有限公司 | Centrifugal pump volute |
| CN106402032A (en) * | 2016-11-25 | 2017-02-15 | 清华大学 | Eddy inhibition and diffusion section drag reduction centrifugal pump asymmetrical water pressing chamber and centrifugal pump |
| CN110360155A (en) * | 2019-08-01 | 2019-10-22 | 全浩铖 | A kind of more flow-guiding channel centrifugal pumps or radial fan shell |
-
2012
- 2012-07-06 CN CN 201220327614 patent/CN202707620U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103982468A (en) * | 2014-04-28 | 2014-08-13 | 北京中水科水电科技开发有限公司 | Centrifugal pump volute |
| CN106402032A (en) * | 2016-11-25 | 2017-02-15 | 清华大学 | Eddy inhibition and diffusion section drag reduction centrifugal pump asymmetrical water pressing chamber and centrifugal pump |
| CN106402032B (en) * | 2016-11-25 | 2018-12-11 | 清华大学 | Inhibit the asymmetric pumping chamber of centrifugal pump and centrifugal pump of vortex and diffuser drag reduction |
| CN110360155A (en) * | 2019-08-01 | 2019-10-22 | 全浩铖 | A kind of more flow-guiding channel centrifugal pumps or radial fan shell |
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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: 20130130 Termination date: 20150706 |
|
| EXPY | Termination of patent right or utility model |