CN2143268Y - Centrifugal pump paddle with spiral surface - Google Patents
Centrifugal pump paddle with spiral surface Download PDFInfo
- Publication number
- CN2143268Y CN2143268Y CN 93200482 CN93200482U CN2143268Y CN 2143268 Y CN2143268 Y CN 2143268Y CN 93200482 CN93200482 CN 93200482 CN 93200482 U CN93200482 U CN 93200482U CN 2143268 Y CN2143268 Y CN 2143268Y
- Authority
- CN
- China
- Prior art keywords
- paddle
- angle
- blade
- centrifugal pump
- point
- 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
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 6
- 239000002002 slurry Substances 0.000 abstract description 2
- 238000005299 abrasion Methods 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 230000008676 import Effects 0.000 description 4
- 239000002893 slag Substances 0.000 description 2
- 238000012938 design process Methods 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
Images
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Disclosed is an angle-changing spiral paddle, and the working surface linetype of the paddle is an angle-changing spiral line. The linetype can ensure the mounting angles on each point of the paddle to monotonously change without the point of extremum. Thus when the paddle works, the centrifugal pump paddle with spiral surface has the advantages of small loss of water force, equal abrasion and long service life. At the same time the coating angle of the paddle can be changed freely in order to make the paddle be suitable for different mediums (water, oil and residue slurry).
Description
The utility model relates to the blade of centrifugal pump, belongs to water conservancy project machinery
The blade of existing low specific speed centrifugal pump is the cylinder blade, and single circular arc commonly used or many circular arcs connect, and are called circular arc cylinder blade (see figure 1).Its shortcoming is that the variation of blade angle β (blade tangent line and circumferencial direction angle) is irregular, and its Changing Pattern is seen Fig. 2, maximum occurs in the centre of every section circular arc, influences the efficient of pump.
The purpose of this utility model provides a kind of cylinder blade that is applicable to low specific speed centrifugal pump.Blade angle changes to outlet monotonously from the blade import, and subtended angle of blade can freely be selected.
The purpose of this utility model is to realize like this, the working surface of the utility model cylinder blade is linear to be the angle logarithmic spiral curve, the laying angle of each point on this curve is changed monotonously from blade import to outlet, extreme point and jump can not appear, so improved the fluidised form of flowing medium in the impeller, can improve the efficient and the working life of pump.
Illustrate that accompanying drawing is as follows:
Fig. 1 is a circular arc type cylinder blade structure schematic representation
Fig. 2 is a laying angle Changing Pattern on the circular arc type blade
Fig. 3 is the utility model angle helical type cylinder blade structure schematic representation
Fig. 4 is an angle helical type cylinder blade angle Changing Pattern
Accompanying drawings embodiment is as follows:
The design process of the utility model angle helical type cylinder blade is as follows:
1, selects the cornerite φ of blade by the requirement of water pump, can choose φ=150 °-0.5n by following formula as slag stock pump φ value
5± 5 ° of n
5---the specific speed of pump
2, calculate the radius r of each point on the vane type line (generally blade can be divided into 10 ° of intervals) and the respective value of polar angle θ.
r＝r
1e
m（ (θ)/(φ) ）
n－θtgβ
1
M=e wherein
nr
2-e
nr
1-φ tg β
1N=φ (tg β
2-tg β
1)/m
r
1, r
2For the blade import with go out port radius
β
1, β
2Laying angle for blade import and outlet
3, link the working surface that each point can form an angle helical type blade with line smoothing.
4, the back side of drawing blade by vane thickness then.
The cornerite of the utility model angle helical type cylinder blade can be selected by the medium difference of water pump.Select different cornerites for use, can make angle helical type blade of the present utility model be used for media such as water, oil, slag slurry.
Claims (1)
1, a kind of angle helical type cylinder blade is characterized in that the working surface of said cylinder blade is linear and is the angle helical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93200482 CN2143268Y (en) | 1993-01-16 | 1993-01-16 | Centrifugal pump paddle with spiral surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93200482 CN2143268Y (en) | 1993-01-16 | 1993-01-16 | Centrifugal pump paddle with spiral surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2143268Y true CN2143268Y (en) | 1993-10-06 |
Family
ID=33785231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93200482 Expired - Fee Related CN2143268Y (en) | 1993-01-16 | 1993-01-16 | Centrifugal pump paddle with spiral surface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2143268Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006111072A1 (en) * | 2005-04-20 | 2006-10-26 | Xinglin Zhang | Impeller of centrifugal or mixed flow working machine |
-
1993
- 1993-01-16 CN CN 93200482 patent/CN2143268Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006111072A1 (en) * | 2005-04-20 | 2006-10-26 | Xinglin Zhang | Impeller of centrifugal or mixed flow working machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |