CN102042232A - Anti-cavitation double-suction middle-opened centrifugal pump - Google Patents
Anti-cavitation double-suction middle-opened centrifugal pump Download PDFInfo
- Publication number
- CN102042232A CN102042232A CN2009102292573A CN200910229257A CN102042232A CN 102042232 A CN102042232 A CN 102042232A CN 2009102292573 A CN2009102292573 A CN 2009102292573A CN 200910229257 A CN200910229257 A CN 200910229257A CN 102042232 A CN102042232 A CN 102042232A
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- inducer
- blade
- cavitation
- centrifugal pump
- pump
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Abstract
The invention provides an anti-cavitation double-suction middle-opened centrifugal pump, relating to double-suction middle-opened centrifugal pumps. A pump shaft is arranged in the body of the anti-cavitation double-suction middle-opened centrifugal pump; an impeller is arranged on the pump shaft; two sides of the impeller are respectively provided with an inducer which is arranged on the pump shaft; each inducer is provided with helical blades, and each helical blade is a cone-shaped variable pitch blade without backswept, so the outer edge of each inducer formed by the helical blades is cone-shaped and without the backswept of delta beta; inlet ends are on the same shaft plane; and the inlet angle and the outlet angle of each blade are easy to regulate. The anti-cavitation double-suction middle-opened centrifugal pump has the advantages of good anti-cavitation performance, small shape and installing size, small material consumption and low production cost, which is suitable for centrifugal pumps.
Description
Technical field
The present invention relates to double suction middle open type centrifugal pump, say it is a kind of anti-cavitation double suction middle open type centrifugal pump in detail.
Background technique
We know, existing anti-cavitation double suction middle open type centrifugal pump, be to be provided with pump shaft in the pump housing, pump shaft is provided with impeller, and the pump shaft of impeller both sides is provided with inducer, inducer is provided with the uniform pitch helical blade, after helical blade entrance point radius increased progressively several angle Δ β gradually, its radius equaled outlet end outer rim radius, and Δ β is called the sweepback angle, entrance point is not on same axial plane, and the inducer outer rim that blade is formed is shaped as cylindrical.This anti-cavitation double suction middle open type centrifugal pump, because the pump shaft of impeller both sides is provided with inducer, inducer is provided with the uniform pitch helical blade, after helical blade entrance point radius increases progressively several angle Δ β gradually, its radius equals outlet end outer rim radius, have sweepback angle Δ β, entrance point is not on same axial plane, and inlet blade angle and exit angle are difficult for adjusting, anti-cavitation performance is poor, the outline overall and installing dimensions of centrifugal pump is bigger, and consume material is many, the manufacture cost height.
Summary of the invention
The technical problem that the present invention solves is, solve blade and have sweepback angle Δ β, entrance point is not on same axial plane, inlet blade angle and exit angle are difficult for adjusting, anti-cavitation performance is poor, the outline overall and installing dimensions of centrifugal pump is bigger, consume material is many, and the problem that manufacture cost is high provides a kind of no sweepback angle Δ β, entrance point is on same axial plane, inlet blade angle and exit angle are easily adjusted, and anti-cavitation performance is good, and the outline overall and installing dimensions of centrifugal pump is less, consume material is few, the anti-cavitation double suction middle open type centrifugal pump of low cost of manufacture.
Technological scheme of the present invention is, is provided with pump shaft in the pump housing, and pump shaft is provided with impeller, the pump shaft of impeller both sides is provided with inducer, and inducer is provided with helical blade, and the main structure characteristics are, helical blade is shaped as taper for the taper variable-pitch blade at no sweepback angle, the inducer outer rim that blade is formed.
The invention has the beneficial effects as follows, because helical blade is the taper variable-pitch blade at no sweepback angle, the inducer outer rim that blade is formed is shaped as taper, no sweepback angle Δ β, entrance point is on same axial plane, and inlet blade angle and exit angle are easily adjusted, anti-cavitation performance is good, the outline overall and installing dimensions of centrifugal pump is less, and consume material is few, low cost of manufacture.The present invention is applicable to centrifugal pump.
Description of drawings
Accompanying drawing is a kind of structural representation of the present invention, also is a kind of embodiment's schematic representation.
Embodiment
Anti-cavitation double suction middle open type centrifugal pump as shown in the figure, be provided with pump shaft 4 in the pump housing 3, pump shaft 4 is provided with impeller 5, and the pump shaft 4 of impeller 5 both sides is provided with inducer 1,6, inducer 1,6 is provided with helical blade 2,7, and inducer the 1, the 6th shown in the drawings has the inducer of three pieces of helical blades. Helical blade 2,7 is the taper variable-pitch blade at no sweepback angle, and the inducer outer rim that blade is formed is shaped as taper.Because helical blade 2,7 is the taper variable-pitch blade at no sweepback angle, the inducer outer rim that blade is formed is shaped as taper, no sweepback angle Δ β, entrance point is on same axial plane, inlet blade angle and exit angle are easily adjusted, and anti-cavitation performance is good, and the axial arrangement size is less, consume material is few, and cost is low.The inlet angle of adjusting blade is littler, exit angle more greatly, help improving the anti-cavitation ability of inducer itself, the fluid lift of minimum simultaneously axial dimension generation maximum.
Claims (1)
1. anti-cavitation double suction middle open type centrifugal pump, be provided with pump shaft in the pump housing, pump shaft is provided with impeller, the pump shaft of impeller both sides is provided with inducer, inducer is provided with helical blade, it is characterized in that: helical blade is shaped as taper for the taper variable-pitch blade at no sweepback angle, the inducer outer rim that blade is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102292573A CN102042232A (en) | 2009-10-20 | 2009-10-20 | Anti-cavitation double-suction middle-opened centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102292573A CN102042232A (en) | 2009-10-20 | 2009-10-20 | Anti-cavitation double-suction middle-opened centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102042232A true CN102042232A (en) | 2011-05-04 |
Family
ID=43908674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102292573A Pending CN102042232A (en) | 2009-10-20 | 2009-10-20 | Anti-cavitation double-suction middle-opened centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102042232A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102817868A (en) * | 2012-08-09 | 2012-12-12 | 文树平 | Eddy type impeller for smoke exhaust ventilator |
| CN105782066A (en) * | 2016-04-11 | 2016-07-20 | 郭学文 | Double-suction and multi-stage centrifugal pump |
-
2009
- 2009-10-20 CN CN2009102292573A patent/CN102042232A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102817868A (en) * | 2012-08-09 | 2012-12-12 | 文树平 | Eddy type impeller for smoke exhaust ventilator |
| CN102817868B (en) * | 2012-08-09 | 2016-05-18 | 文树平 | A kind of eddy current type impeller of smoke exhaust ventilator |
| CN105782066A (en) * | 2016-04-11 | 2016-07-20 | 郭学文 | Double-suction and multi-stage centrifugal pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110504 |