CN108180162A - A kind of chemical centrifugal pump of high stability - Google Patents
A kind of chemical centrifugal pump of high stability Download PDFInfo
- Publication number
- CN108180162A CN108180162A CN201711397312.0A CN201711397312A CN108180162A CN 108180162 A CN108180162 A CN 108180162A CN 201711397312 A CN201711397312 A CN 201711397312A CN 108180162 A CN108180162 A CN 108180162A
- Authority
- CN
- China
- Prior art keywords
- impeller
- blade
- centrifugal pump
- high stability
- back blade
- 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
-
- 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
Abstract
A kind of chemical centrifugal pump of high stability, it is characterized in that, include impeller blade and back shroud of impeller including impeller, back blade, the impeller, the back shroud of impeller outer wall is fixed with the back blade, it is along the circumferential direction evenly distributed, the back blade is camber blades, and the back blade is opposite with the impeller blade bending direction.
Description
Technical field
The present invention relates to a kind of centrifugal pump, particularly a kind of chemical centrifugal pump of high stability.
Background technology
Chemical centrifugal pump refers to the centrifugal pump for chemical-process.Improve reliability, safety and the efficiency of pump always
It is the important topic for pumping area research.And the quality of axial force balance directly affects pump maintainability.Most of multistage pump
Failure be all caused by since Axial Force Calculating is inaccurate or axial thrust balancing devices design is improper, thus lead to multistage pump
Bearing Temperature and burn, axle envelope damage in addition there is the possibility of off-axis, seriousness has been more than efficiency, corrosion, wear
The loss Deng caused by, and influence the service life of whole system.
In the prior art, have on architecture basics of the impeller inlet using end face seal, create the face of front shroud of impeller
Product front shroud of impeller outer diameter and matching for blower inlet casing is combined into clearance fit, the end face of impeller inlet more than the area of back shroud of impeller
Sealing pair make can bear small axial force thrust bearing it is secondary the methods of realize by impeller itself complete equipilibrium axial direction
The effect of power, and the production cost of centrifugal multistage pump multiple centrifugal pump can be reduced.
At present in these technologies, although the mechanism of design can reduce the axial force of centrifugal pump, for centrifugal pump stream
There is larger change in the flow direction of fluid in, so as to influence the efficiency of centrifugal pump.
Invention content
To solve the above problems, An embodiment provides a kind of chemical centrifugal pump of high stability, including：
Impeller, back blade, the impeller include impeller blade and back shroud of impeller, and the back shroud of impeller outer wall is fixed with the notopodium
Piece, along the circumferential direction evenly distributed, the back blade is camber blades, the back blade and the impeller blade bending direction phase
Instead.
The chemical centrifugal pump of above-mentioned high stability, the back blade has 6 and length shapes are equal.
The chemical centrifugal pump of above-mentioned high stability, the impeller include impeller blade, the inlet side of the back blade with
The laying angle of the inlet side of impeller blade is 30 °.
The chemical centrifugal pump of above-mentioned high stability, the back blade rear end are fixedly connected with back blade cover board.
Description of the drawings
Fig. 1 is the schematic diagram of chemical centrifugal pump in one embodiment of the invention；
Fig. 2 is the schematic diagram of chemical centrifugal pump in one embodiment of the invention.
Specific embodiment
Schematic diagrames of Fig. 1-Fig. 2 for the chemical centrifugal pump of the high stability in an embodiment according to the present invention.Please refer to figure
1- Fig. 2, in an embodiment of the present invention, chemical centrifugal pump include impeller blade 2, front shroud of impeller 1, back shroud of impeller 3, cover board
The back blade 4 of outer wall and back blade cover board 5.The shaft core position of the impeller is provided with axle sleeve 6, and the axle sleeve 6 is fixed on pump
On axis 7, the pump shaft is arranged on the pump housing, wherein 36 back blades 4 of outside welding of back shroud of impeller, the back blade 4
It is evenly distributed perpendicular to the Plane of rotation of pump, and along the circumferential direction, the import laying angle of back blade 4 and the import of impeller blade 2
Laying angle differs 30 °, and the axial force and radial pressure that can effectively reduce centrifugal pump are pulsed.The adjacent back blade 4 of any two
Length shapes are equal, and 4 rear end of back blade is fixedly connected with a cover board 5, cover board parallel with chemical centrifugal pump Plane of rotation
5 tops are less than back blade top, and the cover board caused by back blade exit fluid pressure is excessive can be effectively prevent to damage.
When chemical centrifugal pump operates, since back blade 4 moves in a circle with pump shaft 7, liquid in rotation, the rotation of liquid are forced
Tarnsition velocity increases, and back blade is with impeller blade due to bending direction on the contrary, rear side generates the axial direction of pressure head and centrifugal pump
Force direction is on the contrary, generate the axial force that pressure difference pumps so as to equilibrium centrifugation, and since back blade 4 is non-right with impeller blade 2
Claim distribution, reduce the amplitude of radial pressure pulsation.Again since 4 rear end of back blade is fixedly connected with cover board 5, back blade rotation is reduced
For the interference in whole flow field when turning, therefore stability is improved while chemical centrifugal pump efficiency is not appreciably affected, reached
Desired effect.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, those of ordinary skill in the art are not departing from the principle of the present invention and objective
In the case of can make changes, modifications, substitutions and variations to the above described embodiments within the scope of the invention.
Claims (4)
1. a kind of chemical centrifugal pump of high stability, which is characterized in that including：Impeller, back blade, the impeller include impeller leaf
Piece and back shroud of impeller, the back shroud of impeller outer wall is fixed with the back blade, along the circumferential direction evenly distributed, the notopodium
Piece is camber blades, and the back blade is opposite with the impeller blade bending direction.
2. the chemical centrifugal pump of high stability according to claim 1, which is characterized in that the back blade have 6 and
Length shapes are equal.
3. the chemical centrifugal pump of a kind of high stability according to claim 1, which is characterized in that the impeller includes impeller
The laying angle of blade, the inlet side of the back blade and the inlet side of impeller blade is 30 °.
4. a kind of chemical centrifugal pump of high stability according to claim 1, it is characterised in that：The back blade rear end is consolidated
Surely back blade cover board is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711397312.0A CN108180162A (en) | 2017-12-21 | 2017-12-21 | A kind of chemical centrifugal pump of high stability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711397312.0A CN108180162A (en) | 2017-12-21 | 2017-12-21 | A kind of chemical centrifugal pump of high stability |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108180162A true CN108180162A (en) | 2018-06-19 |
Family
ID=62547005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711397312.0A Pending CN108180162A (en) | 2017-12-21 | 2017-12-21 | A kind of chemical centrifugal pump of high stability |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108180162A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2360570A1 (en) * | 1972-12-06 | 1974-06-12 | Lucas Aerospace Ltd | CENTRIFUGAL PUMP |
| CN2268792Y (en) * | 1995-08-04 | 1997-11-26 | 临沂市水泵厂 | Centrifugal water pump impeller |
| CN204175637U (en) * | 2014-10-22 | 2015-02-25 | 成都安迪生测量有限公司 | LNG immersed pump impeller |
| CN204458497U (en) * | 2015-01-26 | 2015-07-08 | 江苏大学 | A kind of chemical centrifugal pump impeller reducing axial force |
-
2017
- 2017-12-21 CN CN201711397312.0A patent/CN108180162A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2360570A1 (en) * | 1972-12-06 | 1974-06-12 | Lucas Aerospace Ltd | CENTRIFUGAL PUMP |
| CN2268792Y (en) * | 1995-08-04 | 1997-11-26 | 临沂市水泵厂 | Centrifugal water pump impeller |
| CN204175637U (en) * | 2014-10-22 | 2015-02-25 | 成都安迪生测量有限公司 | LNG immersed pump impeller |
| CN204458497U (en) * | 2015-01-26 | 2015-07-08 | 江苏大学 | A kind of chemical centrifugal pump impeller reducing axial force |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102287398B (en) | Small-sized high-speed centrifugal pump suitable for flow regulation in wide range | |
| CN105308331B (en) | Device for generating dynamic axial thrust to balance the total axial thrust of a radial rotating machine | |
| CN204458497U (en) | A kind of chemical centrifugal pump impeller reducing axial force | |
| GB2442417A (en) | Pressurized bearing system for submersible motor | |
| CN106968909B (en) | Rivers are pumped with Combined water water pumping power | |
| CN102251991A (en) | Axial force balance device and method for shield pump | |
| CN103225624A (en) | Double-casing symmetric type radial subdivision multiple-stage centrifugal pump | |
| CN104343747A (en) | Axial force balancing structure of centrifugal closed impeller | |
| CN105134666A (en) | Anti-cavitation centrifugal pump | |
| CN106438457A (en) | Half-opened impeller and low-flow super high-lift multiple-stage centrifugal pump with same | |
| CN104121203A (en) | Single-section structure of sectional-type multi-stage pump for sewage | |
| CN105987020B (en) | Open type pitot tube pump | |
| CN2844531Y (en) | Axial-forced balancing disk unit for balanced sectional multi-stage pump | |
| CN202251069U (en) | Vertical multi-stage barrel pump | |
| CN108180162A (en) | A kind of chemical centrifugal pump of high stability | |
| CN104895842A (en) | Spiral flow constant pressure pump | |
| CN103498797A (en) | Parallel type self-balancing multi-stage centrifugal pump | |
| CN206874490U (en) | Axial subdivision three-level centrifugal pump | |
| CN201650763U (en) | Single-level shielding pump with front-mounted balancing plate | |
| RU2016138822A (en) | HIGH VISCOUS FLOW PUMP | |
| CN203230633U (en) | Forward and reverse water flow diverter for self-balancing multistage centrifugal pump | |
| CN202157969U (en) | Multi-stage multi-outlet suspension arm type centrifugal pump | |
| CN204186654U (en) | A kind of novel centrifugal double shrouded wheel axial force balance structure | |
| CN202612214U (en) | Self-balancing multistage pump | |
| CN209458197U (en) | A kind of axial force balance structure of single-stage magnetic centrifugal pump |
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 | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180619 |