CN202946441U - Impeller structure of centrifugal pump - Google Patents
Impeller structure of centrifugal pump Download PDFInfo
- Publication number
- CN202946441U CN202946441U CN 201220583805 CN201220583805U CN202946441U CN 202946441 U CN202946441 U CN 202946441U CN 201220583805 CN201220583805 CN 201220583805 CN 201220583805 U CN201220583805 U CN 201220583805U CN 202946441 U CN202946441 U CN 202946441U
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- CN
- China
- Prior art keywords
- impeller
- blade
- centrifugal pump
- upper cover
- cover disc
- 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 discloses an impeller structure of a centrifugal pump. The impeller structure of the centrifugal pump comprises an upper cover disc provided with a water inlet, a lower cover disc and a plurality of impeller blades evenly arranged between the upper cover disc and the lower cover disc. The front edge of each impeller blade sweeps backwards relative to the rotating direction of each impeller blade, the middle portion of each impeller blade extends forwards relative to the rotating direction of each impeller blade, and a cross line of the impeller blades and the upper cover disc are in an S shape. The impeller structure of the centrifugal pump has the advantages that liquid entering the impeller blades is acted by the impeller blades in advance, the external diameters of the impeller blades can be decreased under the same condition, and therefore friction losses of the impeller blades are reduced, lift and efficiency of the centrifugal pump can be improved on the condition that the external diameters and the number of the impeller blades are not increased, the structure is simple, and the practicality is strong.
Description
Technical field
The utility model relates to a kind of impeller, specially refers to a kind of centrifugal pump impeller structure.
Background technique
The blade shape of existing centrifugal pump impeller, from the impeller inlet prescription to seeing the intersection line approximate circle arc of its impeller with the up and down shrouding disc, this blade shape is unfavorable for that blade interacts with sucking liquid, generally needs to reach by increasing impeller outer diameter or increasing impeller intra vane quantity the purpose that increases the impeller lift in practice; Under the condition of same traffic, lift and rotating speed, impeller outer diameter is larger, and cost is also higher simultaneously; Moreover impeller outer diameter is larger, and the frictional loss of blade is also larger, and the whole efficiency of pump can reduce because of the stator wearing and tearing.
The model utility content
The purpose of this utility model is to provide a kind of in the situation that do not increase the impeller blade number and the blade wheel structure of impeller outer diameter raising pump efficiency and lift, by changing the shape of pump impeller blade, improve the lower deficiency of conventional art Leaf efficient, thereby realized the purpose of this utility model.
The technical problem that the utility model solves can realize by the following technical solutions:
A kind of centrifugal pump impeller structure, comprise the upper cover plate that is provided with water inlet, lower cover, and evenly be arranged on a plurality of blades between upper and lower shrouding disc, the leading edge of blade is scanned backward with respect to the blade rotary direction, protract in blade middle part vane rotary direction relatively, the intersection of blade and upper cover plate is S-shaped.
In a preferred embodiment of the present utility model, the even thickness at blade middle part and head and the tail two ends attenuation gradually.
The beneficial effects of the utility model are:
The liquid that enters impeller is subject to the blade effect ahead of time, under equal conditions can reduce impeller outer diameter, thereby reduces the frictional loss of blade; In the situation that do not increase impeller outer diameter and blade quantity also can improve lift of pump and efficient, simple in structure, practical.
Description of drawings
Fig. 1 is that a kind of centrifugal pump impeller structure described in the utility model is along the structural drawing of water inlet direction.
Fig. 2 is that a kind of centrifugal pump impeller structure described in the utility model is along the sectional view of C-C direction.
Fig. 3 is the schematic diagram of a kind of impeller vane of centrifugal pumps structure described in the utility model.
Fig. 4 is the structural drawing of a kind of centrifugal pump impeller structure intra vane described in the utility model.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with embodiment, further set forth the utility model.
As Fig. 1 and shown in Figure 2, a kind of centrifugal pump impeller structure described in the utility model comprises upper cover plate 100, lower cover 200 and blade 300, and upper cover plate 100 is connected with lower cover 200 is concentric, and the impeller center is provided with for the wheel hub 400 of settling pump shaft.
Blade 300 is evenly arranged between upper cover plate 100 and lower cover 200, and upper cover plate 100 is formed into the mouth of a river 410 jointly with blade 300 around wheel hub 400, is the water outlet 420 of impeller around the outer periphery 330 of impeller; According to the centrifugal pump principle, the current that enter from water inlet 410 will flow out from water outlet 420.
As shown in Figure 3 and Figure 4, blade 300 scans with respect to the sense of rotation of blade 300 backward with the leading edge 310 of wheel hub 400 intersections, and lean forward slightly in the middle part of blade 300, S-shaped protracting seen in being shaped as from water inlet 410 directions of impeller Leaf 300, makes blade 300 S-shaped with the intersection of upper cover plate 100.
The even thickness at the middle part 320 of blade 300, blade 300 and the intersection 333 of impeller periphery and the thickness attenuation gradually of leading edge 310, its cross section is tapered.
Impeller is when work, because blade 300 middle parts are S-shaped, blade 300 areas increase, current can more early be subject to blade 300 effects, the lifting surface area of current increases simultaneously, under equal conditions can reduce the external diameter of impeller, thereby reduce friction loss, not increase simultaneously in the situation of impeller outer diameter and blade quantity and also can improve the lift of pump stage efficiency.
Moreover, during for extraction sewage, some solids in sewage and the semi-solid outer periphery 330 that is not easy to be attached to the leading edge 310 of blade and slides to blade, thus protection blade 300 is not worn.
Above demonstration and described basic principle of the present utility model and major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that describes in above-described embodiment and specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (2)
1. centrifugal pump impeller structure, comprise the upper cover plate that is provided with water inlet, lower cover, and evenly be arranged on a plurality of blades between upper and lower shrouding disc, it is characterized in that, the leading edge of described blade is scanned backward with respect to the blade rotary direction, and the relative vane rotary direction in blade middle part is protracted, and the intersection of blade and upper cover plate is S-shaped.
2. a kind of centrifugal pump impeller structure as claimed in claim 1, is characterized in that, the even thickness at described blade middle part and head and the tail two ends attenuation gradually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220583805 CN202946441U (en) | 2012-11-07 | 2012-11-07 | Impeller structure of centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220583805 CN202946441U (en) | 2012-11-07 | 2012-11-07 | Impeller structure of centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202946441U true CN202946441U (en) | 2013-05-22 |
Family
ID=48422147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220583805 Expired - Fee Related CN202946441U (en) | 2012-11-07 | 2012-11-07 | Impeller structure of centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202946441U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104712577A (en) * | 2015-03-17 | 2015-06-17 | 北京北重伟业电机技术开发有限公司 | Enclosed type impeller |
| CN107152413A (en) * | 2017-06-29 | 2017-09-12 | 浙江大学 | A kind of low pulse centrifugal impeller of combined type |
| CN107407285A (en) * | 2015-03-27 | 2017-11-28 | 株式会社荏原制作所 | Volute pump |
-
2012
- 2012-11-07 CN CN 201220583805 patent/CN202946441U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104712577A (en) * | 2015-03-17 | 2015-06-17 | 北京北重伟业电机技术开发有限公司 | Enclosed type impeller |
| CN107407285A (en) * | 2015-03-27 | 2017-11-28 | 株式会社荏原制作所 | Volute pump |
| US10837462B2 (en) | 2015-03-27 | 2020-11-17 | Ebara Corporation | Volute pump |
| CN107152413A (en) * | 2017-06-29 | 2017-09-12 | 浙江大学 | A kind of low pulse centrifugal impeller of combined type |
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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: 20130522 Termination date: 20151107 |
|
| EXPY | Termination of patent right or utility model |