CN107503979A - A kind of non-equidistant blade solid-liquid two-phase blowdown pump impeller - Google Patents
A kind of non-equidistant blade solid-liquid two-phase blowdown pump impeller Download PDFInfo
- Publication number
- CN107503979A CN107503979A CN201710976004.7A CN201710976004A CN107503979A CN 107503979 A CN107503979 A CN 107503979A CN 201710976004 A CN201710976004 A CN 201710976004A CN 107503979 A CN107503979 A CN 107503979A
- Authority
- CN
- China
- Prior art keywords
- blade
- impeller
- linear leaf
- equidistant
- liquid
- 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.)
- Granted
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 21
- 230000008676 import Effects 0.000 claims abstract description 27
- 239000002245 particle Substances 0.000 abstract description 8
- 239000007787 solid Substances 0.000 abstract description 7
- 239000000835 fiber Substances 0.000 abstract description 4
- 230000000903 blocking effect Effects 0.000 abstract description 3
- 239000012530 fluid Substances 0.000 abstract description 3
- 239000010865 sewage Substances 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- F04D29/2261—Rotors specially for centrifugal pumps with special measures
-
- 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
- F04D7/00—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04D7/02—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type
- F04D7/04—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being viscous or non-homogenous
Abstract
The invention provides a kind of non-equidistant blade solid-liquid two-phase blowdown pump impeller, heavy bodied two-phase solid-liquid fluid can be conveyed, maximum weight concentration is conveyed up to 35~55%, mainly include a back shroud (5) and some linear leaf A (1), linear leaf B (2), secondary linear leaf (3), import short blade (4) and back blade (6), it is characterised in that：The impeller is semi-open centrifugal impeller, and blade is non-equidistant blade, and is provided with import short blade；The secondary linear leaf (3) is located between linear leaf A (1) and linear leaf B (2)；The blade exit width b0 of the import short blade is less than impeller outlet width b2.The present invention has fabulous adaptability to solid particle and paper handkerchief, long and short fiber etc. of different sizes, can avoid the blocking in wheel hub such as solid particle, increase the through performance of impeller solid particle, impeller is set to be run in nominal situation, and balance is good, stable and reliable operation.
Description
Technical field
The present invention relates to field of fluid machinery, more particularly to a kind of non-equidistant blade solid-liquid two-phase blowdown pump impeller.
Background technology
The effect of impeller is that the mechanical energy of prime mover is directly transmitted into liquid, motor driven wheel rotation, is centrifuged with this
Power is that water is thrown away, and these energy are being converted into static pressure by pump case, (are mainly increasing static pressure to increase the static energy of liquid and kinetic energy
Can).
In dredge pump, when pumping sewage dirt medium, because can usually be mingled with medium all size particle, long fibre,
The impurity such as house refuse, so as to easily cause the blockage problem in impeller of pump, influence pump by performance and operational efficiency, reduce pump
Reliability and service life.And impeller of pump needs shutdown maintenance to handle when being wound, operating efficiency is had a strong impact on, is hindered
Delay the development of industrial production and environmental protection work.Therefore, the reality of the key technology such as impeller of pump blocking-free performance and Effec-tive Function
It is now particularly important to dredge pump.And traditional dredge pump for increase impeller to sewage impurity by performance, generally to sacrifice pump
Hydraulic performance be cost, realized using with inlet diameter and the larger single, double flow passage impeller impeller by area, such leaf
Wheel is generally especially thick and heavy, and radial load is big, and pump assembly starting and stopping vibration noise is strong, easily causes the parts such as choma, bearing, mechanical seal
Serious wear；For equidistant vane type centrifugal pump impeller, although its efficiency is higher, it is by performance and to of different sizes
Solid particle adaptability is poor, easy to hang on blade as the house refuses such as the paper handkerchief in rain sewage, long fibre are more and more,
The blocking of impeller is caused, influences the stable operation of unit.
The content of the invention
To solve the above mentioned problem of prior art, the invention provides a kind of non-equidistant blade solid-liquid two-phase dredge pump
Impeller.The technical scheme specifically taken is：
A kind of non-equidistant blade solid-liquid two-phase blowdown pump impeller, mainly include a back shroud (5) and some linear leaf A
(1), linear leaf B (2), secondary linear leaf (3), import short blade (4) and back blade (6), it is characterised in that：The impeller is half-open
Formula centrifugal impeller, blade are non-equidistant blade, and it is t1 to define linear leaf A (1) and the blade pitgh of adjacent secondary linear leaf (3), long
The blade pitgh of blade B (2) and adjacent secondary linear leaf (3) is t2, linear leaf A (1) and the blade pitgh of adjacent linear leaf B1 (7)
For t3, there is t1<t2<t3；The import short blade (4) is arranged at impeller inlet, positioned at impeller hub and impeller inlet diameter
Between；The secondary linear leaf (3) is located between linear leaf A (1) and linear leaf B (2)；The back blade (6) is arranged at the impeller back of the body
Portion is located on back shroud (5)；The blade exit width b0 of the import short blade (4) is less than impeller outlet width b2.
Further, the number of blade of the import short blade (4) is 2, and be centrosymmetric distribution, the import short blade
(4) external diameter is not more than the inlet diameter of impeller.
Further, the linear leaf A (1) is connected with linear leaf B (2) inlet side at impeller hub, described
Linear leaf A (1) outlet laying angle is more than the outlet laying angle of the linear leaf B (2), the subtended angle of blade of the linear leaf A (1)
Less than the subtended angle of blade of the linear leaf B (2).
Further, the spacing between the blade meets following formula：t1:t2:T3=1:2:3.5.
Further, the vane inlet diameter of the secondary linear leaf (3) is more bigger than the outer blade diameter of import short blade (4),
For 1.05~1.15 times of import short blade (4) blade exit external diameter, the outlet external diameter and impeller outer diameter of the secondary linear leaf (3)
It is equal.
Further, the blade exit width b0 and impeller outlet width b2 of the import short blade meet following formula relation：
B0=(0.4~0.65) b2.
The beneficial effects of the invention are as follows：
1. impeller can convey heavy bodied two-phase solid-liquid fluid, conveying maximum weight concentration up to 35~55%, adopt by impeller
With non-equidistant blade, there is fabulous adaptability to solid particle and paper handkerchief, long and short fiber etc. of different sizes；
2. being provided with import short blade between impeller hub and impeller inlet diameter, short blade is rotated in entrance generation
Small whirlpool, so as to avoid the blocking in wheel hub such as solid particle, permeability of the increase impeller to solid particle of different sizes
Can, impeller is run in nominal situation；
3. compared to thick and heavy single, double flow passage impeller, the present invention in non-equidistant blade solid-liquid two-phase blowdown pump impeller not
Only efficiency high and light weight, greatly save the use of material, and because blade is centrosymmetric distribution, have good
Balance, radial load is small, operates steadily, noise and vibration reduction in unit operation and start and stop, so as to substantially increase machinery
The service life of the rotor parts such as sealing, bearing.
Brief description of the drawings
The present invention is further described with reference to the accompanying drawings and detailed description.
Fig. 1 is a kind of axis projection of non-equidistant blade solid-liquid two-phase blowdown pump impeller of one embodiment of the invention；
Fig. 2 is a kind of plan of non-equidistant blade solid-liquid two-phase blowdown pump impeller of one embodiment of the invention；
In figure：1. linear leaf A；2. linear leaf B；3. time linear leaf；4. import short blade；5. back shroud；6. back blade；7.
Linear leaf B1.
Embodiment
The invention provides a kind of non-equidistant blade solid-liquid two-phase blowdown pump impeller, such as Fig. 1,2 be respectively one in the present invention
The axis projection of embodiment and plan.
A kind of non-equidistant blade solid-liquid two-phase blowdown pump impeller, mainly includes a back shroud 5 and some linear leaf A1,
Linear leaf B2, secondary linear leaf 3, import short blade 4 and back blade 6, it is characterised in that：The impeller is semi-open centrifugal impeller,
Blade is non-equidistant blade, and the blade pitgh for defining linear leaf A1 and adjacent secondary linear leaf 3 is t1, linear leaf B2 and adjacent vice-minister
The blade pitgh of blade 3 is that t2, linear leaf A1 and adjacent linear leaf B17 blade pitgh are t3, there is t1<t2<t3；The import
Short blade 4 is arranged at impeller inlet, between impeller hub and impeller inlet diameter；The secondary linear leaf 3, which is located at, to come into leaves
Between piece A1 and linear leaf B2；The back blade 6 is arranged at impeller back and is located on back shroud 5；The leaf of the import short blade 4
Piece exit width b0 is less than impeller outlet width b2.
Further, the number of blade of the import short blade 4 is 2, and be centrosymmetric distribution, the import short blade 4
External diameter is not more than the inlet diameter of impeller.
Further, the linear leaf A1 is connected with linear leaf B2 inlet side at impeller hub, described to come into leaves
Piece A1 outlet laying angle is more than the outlet laying angle of the linear leaf B2, and the subtended angle of blade of the linear leaf A1 is less than the length
Blade B2 subtended angle of blade.
Further, the spacing between the blade meets following formula：t1:t2:T3=1:2:3.5.
Further, the secondary linear leaf) vane inlet diameter it is more bigger than the outer blade diameter of import short blade 4, to enter
1.05~1.15 times of the mouth blade exit external diameter of short blade 4, the outlet external diameter of the secondary linear leaf 3 is equal with impeller outer diameter.
Further, the blade exit width b0 and impeller outlet width b2 of the import short blade meet following formula relation：
B0=(0.4~0.65) b2.
It should be appreciated that although this specification is described according to each embodiment, not each embodiment only includes one
Individual independent technical scheme, this narrating mode of specification is only that those skilled in the art will should say for clarity
Bright book is as an entirety, and the technical solutions in the various embodiments may also be suitably combined, and forming those skilled in the art can be with
The other embodiment of understanding.
Those listed above is a series of to describe illustrating only for possible embodiments of the invention in detail,
They simultaneously are not used to limit the scope of the invention, all equivalent embodiments made without departing from skill spirit of the present invention or change
It should be included in the scope of the protection.
Claims (6)
1. a kind of non-equidistant blade solid-liquid two-phase blowdown pump impeller, mainly include a back shroud (5) and some linear leaf A
(1), linear leaf B (2), secondary linear leaf (3), import short blade (4) and back blade (6), it is characterised in that：The impeller is half-open
Formula centrifugal impeller, blade are non-equidistant blade, and it is t1 to define linear leaf A (1) and the blade pitgh of adjacent secondary linear leaf (3), long
The blade pitgh of blade B (2) and adjacent secondary linear leaf (3) is t2, linear leaf A (1) and the blade pitgh of adjacent linear leaf B1 (7)
For t3, there is t1<t2<t3；The import short blade (4) is arranged at impeller inlet, positioned at impeller hub and impeller inlet diameter
Between；The secondary linear leaf (3) is located between linear leaf A (1) and linear leaf B (2)；The back blade (6) is arranged at the impeller back of the body
Portion is located on back shroud (5)；The blade exit width b0 of the import short blade (4) is less than impeller outlet width b2.
2. according to a kind of non-equidistant blade solid-liquid two-phase blowdown pump impeller described in claim 1, it is characterised in that：It is described enter
The number of blade of mouth short blade (4) is 2, and be centrosymmetric distribution, and the external diameter of the import short blade (4) is not more than the import of impeller
Diameter.
3. according to a kind of non-equidistant blade solid-liquid two-phase blowdown pump impeller described in claim 1, it is characterised in that：The length
Blade A (1) is connected with linear leaf B (2) inlet side at impeller hub, and the outlet laying angle of the linear leaf A (1) is big
In the outlet laying angle of the linear leaf B (2), the subtended angle of blade of the linear leaf A (1) is less than the blade of the linear leaf B (2)
Cornerite.
4. according to a kind of non-equidistant blade solid-liquid two-phase blowdown pump impeller described in claim 1, it is characterised in that：The leaf
Spacing between piece meets following formula：
t1:t2:T3=1:2:3.5.
5. according to a kind of non-equidistant blade solid-liquid two-phase blowdown pump impeller described in claim 1, it is characterised in that：Described time
The vane inlet diameter of linear leaf (3) is more bigger than the outer blade diameter of import short blade (4), is import short blade (4) blade exit
1.05~1.15 times of external diameter, the outlet external diameter of the secondary linear leaf (3) are equal with impeller outer diameter.
6. according to a kind of non-equidistant blade solid-liquid two-phase blowdown pump impeller described in claim 1, it is characterised in that it is described enter
The blade exit width b0 and impeller outlet width b2 of mouth short blade meet following formula relation：
B0=(0.4~0.65) b2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710976004.7A CN107503979B (en) | 2017-10-19 | Non-equidistant blade solid-liquid two-phase sewage pump impeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710976004.7A CN107503979B (en) | 2017-10-19 | Non-equidistant blade solid-liquid two-phase sewage pump impeller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107503979A true CN107503979A (en) | 2017-12-22 |
| CN107503979B CN107503979B (en) | 2024-04-19 |
Family
ID=
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007315333A (en) * | 2006-05-29 | 2007-12-06 | Hitachi Plant Technologies Ltd | Centrifugal fluid machine |
| CN101432527A (en) * | 2006-04-25 | 2009-05-13 | Ihc荷兰知识产权有限公司 | Centrifugal pump impeller |
| CN105221477A (en) * | 2015-10-16 | 2016-01-06 | 江苏大学 | A kind of asymmetric solid-liquid two-phase flow centrifugal impeller Hydraulic Design Method |
| CN106337833A (en) * | 2015-07-06 | 2017-01-18 | 杭州三花研究院有限公司 | Impeller, centrifugal pump and electric drive pump |
| CN207278564U (en) * | 2017-10-19 | 2018-04-27 | 江苏国泉泵业制造有限公司 | A kind of non-equidistant blade solid-liquid two-phase blowdown pump impeller |
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101432527A (en) * | 2006-04-25 | 2009-05-13 | Ihc荷兰知识产权有限公司 | Centrifugal pump impeller |
| JP2007315333A (en) * | 2006-05-29 | 2007-12-06 | Hitachi Plant Technologies Ltd | Centrifugal fluid machine |
| CN106337833A (en) * | 2015-07-06 | 2017-01-18 | 杭州三花研究院有限公司 | Impeller, centrifugal pump and electric drive pump |
| CN105221477A (en) * | 2015-10-16 | 2016-01-06 | 江苏大学 | A kind of asymmetric solid-liquid two-phase flow centrifugal impeller Hydraulic Design Method |
| CN207278564U (en) * | 2017-10-19 | 2018-04-27 | 江苏国泉泵业制造有限公司 | A kind of non-equidistant blade solid-liquid two-phase blowdown pump impeller |
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