CN108194411A - A kind of two stage blade pressurizing propeller - Google Patents
A kind of two stage blade pressurizing propeller Download PDFInfo
- Publication number
- CN108194411A CN108194411A CN201711301950.8A CN201711301950A CN108194411A CN 108194411 A CN108194411 A CN 108194411A CN 201711301950 A CN201711301950 A CN 201711301950A CN 108194411 A CN108194411 A CN 108194411A
- Authority
- CN
- China
- Prior art keywords
- blade
- grade
- impeller disk
- impeller
- pressurizing propeller
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
- F04D29/24—Vanes
- F04D29/242—Geometry, shape
- F04D29/245—Geometry, shape for special effects
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
- F04D29/2205—Conventional flow pattern
- F04D29/2216—Shape, geometry
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
- F04D29/2261—Rotors specially for centrifugal pumps with special measures
- F04D29/2272—Rotors specially for centrifugal pumps with special measures for influencing flow or boundary layer
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
- F04D29/2261—Rotors specially for centrifugal pumps with special measures
- F04D29/2294—Rotors specially for centrifugal pumps with special measures for protection, e.g. against abrasion
Abstract
The present invention discloses a kind of two stage blade pressurizing propeller, including a grade blade, two grade blades and the impeller disk, the impeller disk is circular discs, impeller disk lateral projections are provided with an equally distributed grade blade centered on impeller disk axis, the circle of impeller disk circumference one is evenly arranged with two grade blades, and the two stage blade pressurizing propeller surface is coated with hydrophobic coating；One grade blade applies strength to water body, after water body is driven to be rotated with an initial velocity, two grade blades in vane edge are discharged the water body with certain initial velocity with larger linear velocity outward, further improve the speed for leaving the flow in water pump cover, discharge pressure is improved, improves efficiency of centrifugal pump.
Description
Technical field
The invention belongs to centrifuge pump technical field, specifically a kind of two stage blade pressurizing propeller.
Background technology
Centrifugal pump is to be rotated using impeller and make water that centrifugal movement occur come work, and the impeller of rotation is driven in pump case
Water does high speed rotary motion, and water occurs centrifugal movement, is thrown toward impeller outer edge, and the runner through volute pump case flows into the pressure water of water pump
Pipeline.Impeller blade upstream face is contacted with water body, and impeller blade upstream face contacts simultaneously applied force with water body in impeller rotary course,
Water body rotation is driven, traditional impeller blade negligible amounts, low space utilization easily generates cavitation；Some impellers will
Smaller blade is arranged on vane edge, increases blade quantity, improves space availability ratio, alleviates cavitation, but this
The direction blade of kind impeller is mostly blade upstream face normal direction linear velocity and water body linear velocity when blade rotates along impeller radial arrangement
Speed difference it is excessive, turbulent sinuous flow is larger in water body, influences efficiency of centrifugal pump.
Invention content
Goal of the invention：The deficiency that the purpose of the present invention is be directed in current technology provides a kind of two stage blade pressurizing propeller,
Employ two stage blade, level-one blade quantity is less, and blade is larger, and curvature is smaller, and two level blade quantity is more, blade compared with
Small, bending degree bigger a, grade blade applies strength to water body, after water body is driven to be rotated with an initial velocity, in impeller side
Two grade blades of edge are discharged the water body with certain initial velocity with larger linear velocity outward, are further improved and are left water pump
The speed of flow in housing improves discharge pressure, improves efficiency of centrifugal pump.
Technical solution：To achieve the above object, the present invention provides a kind of two stage blade pressurizing propeller, including a grade blade,
Two grade blades and the impeller disk, the impeller disk are circular discs, and impeller disk lateral projections are provided with uniformly is divided centered on impeller disk axis
One grade blade of cloth, the circle of impeller disk circumference one are evenly arranged with two grade blades, and the two stage blade pressurizing propeller surface is coated with
Hydrophobic coating.
As a kind of improvement of this programme, the level-one blade quantity is 6, and the two level blade quantity is 30-40 pieces.
As a kind of improvement of this programme, on the two grade blades upstream face using impeller disk axis as certain radius in the center of circle at
The upper normal direction of any and the point normal direction angle on a grade blade upstream face at respective radius are 20 ~ 30 °, and two grade blades bending journey
Degree is more than the grade blade at respective radius.
Advantageous effect：A kind of two stage blade pressurizing propeller of the present invention, employs two stage blade, level-one blade quantity
Less, blade is larger, and curvature is smaller, and when impeller rotates, a grade blade applies strength to water body, drives water body with an initial velocity
Degree rotation, two grade blades are arranged at vane edge, and quantity is more, and blade is smaller, bending degree bigger, two grade blade upstream faces
On using impeller disk axis as the normal direction of any at certain radius in the center of circle and the point method on a grade blade upstream face at respective radius
It is 20 ~ 30 ° to angle, after two grade blade upstream faces are contacted with the water body with certain initial velocity, further improves and leave water pump
The speed of flow in housing improves component velocity of the water body along impeller radial direction when special, improve discharge pressure, improves centrifugation
The efficiency of pump.
The two stage blade pressurizing propeller surface is coated with hydrophobic coating, and conventional impellers blade surface does not have hydrophobic layer,
Since impeller surface material has certain viscosity, due to viscous effect, fluid particle adheres on a surface of an, forms fluid not
Water in sliding phenomenon, i.e. phase pump case is opposite with blade to the phenomenon that speed is zero, thus generates frictional resistance and energy dissipation,
After impeller surface coats hydrophobic coating, due to hydrophobic coating to water without viscosity, the impeller is in the work that medium is water
Make under environment, blade can be substantially reduced to the energy dissipation in the frictional resistance and the impeller course of work of water.
Description of the drawings
Fig. 1, the two stage blade pressurizing propeller structure schematic diagram；
Reference numerals list：1st, a grade blade, 2, two grade blades, 3, the impeller disk.
Has embodiment
With reference to the accompanying drawings and detailed description, the present invention is furture elucidated, it should be understood that following specific embodiments are only used for
Illustrate the present invention rather than limit the scope of the invention.It should be noted that word " preceding " used in the following description,
" rear ", "left", "right", "up" and "down" refer to the direction in attached drawing, and word " interior " and " outer " refer respectively to direction or remote
Direction from particular elements geometric center.
A kind of two stage blade pressurizing propeller as shown in Figure 1, including a grade blade 1, two grade blades 2 and the impeller disk 3, impeller
Disk 3 is circular discs, and 3 lateral projections of the impeller disk are provided with an equally distributed grade blade 1, impeller centered on 3 axis of the impeller disk
3 circumference one of disk circle is evenly arranged with two grade blades 2, and 1 quantity of a grade blade is 6, and two grade blades, 2 quantity is 30-40 pieces, two level
It is met on 2 upstream face of blade by the normal direction of any at certain radius in the center of circle of 3 axis of the impeller disk with a grade blade 1 at respective radius
Point normal direction angle on the water surface is 25 °, and two grade blades, 2 bending degree is more than the grade blade 1 at respective radius, two stage blade
Pressurizing propeller surface is coated with hydrophobic coating, and the specific material of hydrophobic coating is the fluorine-containing hydrophobic coating of E.I.Du Pont Company.
The technical means disclosed in the embodiments of the present invention is not limited only to the technological means disclosed in the above embodiment, further includes
By more than technical characteristic arbitrarily the formed technical solution of combination.
Claims (3)
1. a kind of two stage blade pressurizing propeller, which is characterized in that be including a grade blade, two grade blades and the impeller disk, the impeller disk
Circular discs, impeller disk lateral projections are provided with an equally distributed grade blade, impeller disk circumference one centered on impeller disk axis
Circle is evenly arranged with two grade blades, and the two stage blade pressurizing propeller surface is coated with hydrophobic coating.
2. a kind of two stage blade pressurizing propeller according to claim 1, it is characterised in that：The level-one blade quantity is 6
Piece, the two level blade quantity are 30-40 pieces.
3. a kind of two stage blade pressurizing propeller according to claim 2, it is characterised in that：On the two grade blades upstream face
Using impeller disk axis as the normal direction of any at certain radius in the center of circle and the point normal direction on a grade blade upstream face at respective radius
Angle is 20 ~ 30 °, and two grade blade bending degree are more than the grade blade at respective radius.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711301950.8A CN108194411A (en) | 2017-12-10 | 2017-12-10 | A kind of two stage blade pressurizing propeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711301950.8A CN108194411A (en) | 2017-12-10 | 2017-12-10 | A kind of two stage blade pressurizing propeller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108194411A true CN108194411A (en) | 2018-06-22 |
Family
ID=62573778
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711301950.8A Pending CN108194411A (en) | 2017-12-10 | 2017-12-10 | A kind of two stage blade pressurizing propeller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108194411A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2916207Y (en) * | 2006-04-03 | 2007-06-27 | 彭树林 | Multistage propelling type centrifugal impeller for pump |
| CN104179720A (en) * | 2014-07-30 | 2014-12-03 | 苏州淮通电气有限公司 | Hydrophobic impeller submersible pump |
| CN105626575A (en) * | 2015-12-29 | 2016-06-01 | 西安航天动力研究所 | Multi-level blade centrifugal wheel |
| CN105889124A (en) * | 2016-06-28 | 2016-08-24 | 陈向阳 | Impeller of centrifugal pump |
| CN106438457A (en) * | 2016-10-28 | 2017-02-22 | 福斯流体控制（苏州）有限公司 | Half-opened impeller and low-flow super high-lift multiple-stage centrifugal pump with same |
-
2017
- 2017-12-10 CN CN201711301950.8A patent/CN108194411A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2916207Y (en) * | 2006-04-03 | 2007-06-27 | 彭树林 | Multistage propelling type centrifugal impeller for pump |
| CN104179720A (en) * | 2014-07-30 | 2014-12-03 | 苏州淮通电气有限公司 | Hydrophobic impeller submersible pump |
| CN105626575A (en) * | 2015-12-29 | 2016-06-01 | 西安航天动力研究所 | Multi-level blade centrifugal wheel |
| CN105889124A (en) * | 2016-06-28 | 2016-08-24 | 陈向阳 | Impeller of centrifugal pump |
| CN106438457A (en) * | 2016-10-28 | 2017-02-22 | 福斯流体控制（苏州）有限公司 | Half-opened impeller and low-flow super high-lift multiple-stage centrifugal pump with same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180622 |