CN206144841U - Coaxial bilobed wheel axial - -flow blading pump of preceding impeller blade angularly adjustable - Google Patents
Coaxial bilobed wheel axial - -flow blading pump of preceding impeller blade angularly adjustable Download PDFInfo
- Publication number
- CN206144841U CN206144841U CN201621178458.7U CN201621178458U CN206144841U CN 206144841 U CN206144841 U CN 206144841U CN 201621178458 U CN201621178458 U CN 201621178458U CN 206144841 U CN206144841 U CN 206144841U
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- impeller
- blade
- front impeller
- pump
- impeller blade
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- 230000003628 erosive effect Effects 0.000 abstract description 3
- 238000010276 construction Methods 0.000 abstract 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model relates to a coaxial bilobed wheel axial - -flow blading pump of preceding impeller blade angularly adjustable, including two impeller cover and the water guide cone of setting in two impeller cover, preceding impeller, preceding impeller blade angle adjustment mechanism, preceding impeller blade angle adjusting yoke, back impeller, the water pump main shaft and the rear guide vane body, preceding impeller is laid on water pump main shaft with the back impeller is fixed, water guide cone installs the head of impeller in the front, the rear guide vane body sets up the outlet side at the back impeller, preceding impeller blade angle adjustment mechanism sets up among the wheel hub of impeller in the front, preceding impeller blade angle adjustment mechanism is connected with preceding impeller blade angle adjusting yoke. The utility model is suitable for a low lift vertical shaft STREAMING water pump also is applicable to different type of construction's horizontal through -flow pump, has improved cavitation erosion performance and adjusting function greatly, has obviously improved the work lift, widens the high efficiency scope more than 20%, and the power change law is along with the slow increase of the increase of flow, can satisfy practical application's needs well.
Description
Technical field
This utility model belongs to blade pump technical field, and in particular to a kind of coaxial bilobate of front impeller blade adjustable angle
Wheel axial-flow type vane pump.
Background technology
Vane pump is widely used in the fields such as field irrigation, drought resisting water drainage, Improvement of Ecological Environment and Inter-Basin Water Transfer Project,
Existing axial--flow blading pump, lift is relatively low, rarely exceed 10.0m, and the penalty that cavitates after off-design operating point,
Its safe operation is affected, and there is unstable saddle area in high-lift, low discharge area, when being close to zero delivery operating mode, power
It is increased dramatically, causes supporting prime mover overload.
Utility model content
For above-mentioned problems of the prior art, the purpose of this utility model is to provide one kind to avoid the occurrence of
State the coaxial bilobed wheel axial--flow blading pump of the front impeller blade adjustable angle of technological deficiency.
In order to realize above-mentioned utility model purpose, the technical scheme that this utility model is provided is as follows：
A kind of coaxial bilobed wheel axial--flow blading pump of front impeller blade adjustable angle, including bilobate hub cap 8 and set
Put water guide cone 1 in bilobate hub cap 8, front impeller 2, front impeller blade angle adjusting mechanism 3, front impeller blade angular adjustment
Pull bar 4, rear impeller 5, Pump Shaft 6 and rear guide vane body 7, front impeller 2 are fixedly placed on Pump Shaft 6 with rear impeller 5, water guide
Cone 1 is arranged on the head of front impeller 2, and rear guide vane body 7 is arranged on the outlet side of rear impeller 5, front impeller blade angle adjusting mechanism 3
It is arranged in the wheel hub of front impeller 2, front impeller blade angle adjusting mechanism 3 is connected with front impeller blade angular adjustment pull bar 4.
Further, axial--flow blading pump of the front impeller 2 for adjustable blade burner section.
Further, the number of blade of front impeller 2 is 3～5 pieces.
Further, the number of blade of rear impeller 5 is 3～5 pieces.
Further, the number of blade of rear guide vane body 7 is 6～8 pieces.
Further, bilobate hub cap 8 is made up of leading portion and back segment, and leading portion is spherical shape, and back segment is cylindrical shape.
Further, front impeller 2, rear impeller 5 are aial flow impeller.
Further, blade twist rate of the blade twist rate of rear impeller 5 slightly larger than front impeller 2.
The coaxial bilobed wheel axial--flow blading pump of the front impeller blade adjustable angle that this utility model is provided, it is adaptable to low to raise
Journey vertical shaft streaming water pump, is also applied for the Horizontal type tubular pump of different structure type, substantially improves cavitation erosion performance and modulability
Can, hence it is evident that improve work lift, widen high efficiency scope more than 20%, power changing rule is slow with the increase of flow
Increase, reduces equipment cost and operating cost, can meet the needs of practical application well.
Description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the coaxial bilobed wheel axial--flow blading pump performance and conventional two-stage axial-flow type leaf of front impeller blade adjustable angle
Piece pump performance is superimposed comparison diagram；
In figure, 1- water guide cones；Impeller before 2-；Impeller blade angle adjusting mechanism before 3-；Impeller blade angular adjustment before 4-
Pull bar；Impeller after 5-；6- Pump Shafts；7- rear guide vane bodies；8- bilobate hub caps.
Specific embodiment
In order that the purpose of this utility model, technical scheme and advantage become more apparent, below in conjunction with the accompanying drawings and specifically
Embodiment is described further to this utility model.It should be appreciated that specific embodiment described herein is only to explain this reality
With new, it is not used to limit this utility model.Based on the embodiment in this utility model, those of ordinary skill in the art are not having
There is the every other embodiment obtained under the premise of making creative work, belong to the scope of this utility model protection.
As shown in figure 1, a kind of coaxial bilobed wheel axial--flow blading pump of front impeller blade adjustable angle, including water guide cone 1,
Front impeller 2, front impeller blade angle adjusting mechanism 3, front impeller blade angular adjustment pull bar 4, rear impeller 5, Pump Shaft 6, after
The part such as diffuser 7 and bilobate hub cap 8.
Axial--flow blading pump of the front impeller 2 for adjustable blade burner section, front impeller 2 adopt inner flange nut with rear impeller 5
It is fixedly placed on Pump Shaft 6, seam and sealing is set between flange, prevents conveying liquid from entering wheel hub, Pump Shaft 6
The wheel hub top of end flanges and rear impeller 5 is fixed, it is ensured that front impeller 2 and rear impeller 5 are fixed on same Pump Shaft 6, are guarantor
The import fluidised form of card bilobed wheel axial--flow blading pump, installs water guide cone 1 in the head of front impeller 2；5 outlet side cloth of impeller is postponed afterwards
Diffuser 7, exports kinetic energy with impeller after recovery 5.In the wheel hub of front impeller 2 arrange before impeller blade angle adjusting mechanism 3, and
By pull bar 4 through Pump Shaft 6 to servomotor, the adjustment of blade angle of impeller 2 before being realized by the up and down motion of servomotor.It is double
Impeller housing 8 is made up of leading portion and back segment, due to front impeller be adjustable blade burner section, therefore leading portion be spherical shape, back segment
For cylindrical shape.Front impeller 2, rear impeller 5 are aial flow impeller, and structure is identical, using identical aerofoil profile, the leaf of rear impeller 5
The twisting coefficient of piece is slightly larger than front impeller, and front impeller 2 and rear impeller 5 are fixedly placed on same main shaft, and same direction rotates at the same speed,
Current enter front impeller 2 by water guide cone 1, and the past impeller 2 is directly entered rear impeller 5 after obtaining lift and obtains lift, posterior lobe again
The exit of wheel 5 is provided with rear guide vane body 7, and current pass through rear guide vane body 7 to reclaim kinetic energy.When operating condition changes, adjust
The blade angle of front impeller 2, it is ensured that the bilobed wheel axial--flow blading pump operation is in optimum condition.The number of blade of front impeller 2 can be with
For 3～5 pieces.The number of blade of impeller 5 can be 3～5 pieces afterwards.The number of blade of rear guide vane body 7 can be 6～8 pieces.
Now by taking the axial--flow blading pump that specific speed is 1000 as an example, to the coaxial bilobate using front impeller blade adjustable angle
Wheel axial-flow type vane pump adopts CFD analysis contrasts, water pump vane diameter 300mm, rotating speed with the performance of conventional two-stage axial-flow pump
1450r/min, the number of blade of hub diameter 160mm, front impeller and rear impeller be 4 pieces, rear guide vane body blade be 7 pieces.As a result
Show, the coaxial bilobed wheel axial--flow blading pump and routine two-stage axial--flow blading pump performance curve of front impeller blade adjustable angle
Shape is significantly different, and its flow～efficiency curve, lift～flow are more flat, and high efficient district is wider, shaft power be no longer with
The increase of flow and reduce, be the trend increased with the increase of flow on the contrary, and it is very flat, with good regulation
Performance.In the operating point of peak efficiency 85%, cavitation specific angular speed reaches more than 1500, hence it is evident that better than conventional axial-flow type vane pump.
The coaxial bilobed wheel axial--flow blading pump performance of front impeller blade adjustable angle is superimposed with conventional two-stage axial--flow blading pump performance
Contrast is as shown in Figure 2.
The coaxial bilobed wheel axial--flow blading pump of the front impeller blade adjustable angle that this utility model is provided, it is adaptable to low to raise
Journey vertical shaft streaming water pump, is also applied for the Horizontal type tubular pump of different structure type, substantially improves cavitation erosion performance and modulability
Can, hence it is evident that improve work lift, widen high efficiency scope more than 20%, power changing rule is slow with the increase of flow
Increase, reduces equipment cost and operating cost, can meet the needs of practical application well.
Embodiment described above only expresses embodiment of the present utility model, and its description is more concrete and detailed, but and
Therefore the restriction to this utility model the scope of the claims can not be interpreted as.It should be pointed out that for the ordinary skill of this area
For personnel, without departing from the concept of the premise utility, some deformations and improvement can also be made, these belong to this
The protection domain of utility model.Therefore, the protection domain of this utility model patent should be defined by claims.
Claims (8)
1. a kind of coaxial bilobed wheel axial--flow blading pump of front impeller blade adjustable angle, it is characterised in that outside including bilobed wheel
Shell (8) and the water guide cone (1) being arranged in bilobate hub cap (8), front impeller (2), front impeller blade angle adjusting mechanism
(3), front impeller blade angular adjustment pull bar (4), rear impeller (5), Pump Shaft (6) and rear guide vane body (7), front impeller (2) with
Impeller (5) is fixedly placed on Pump Shaft (6) afterwards, and head of the water guide cone (1) installed in front impeller (2), rear guide vane body (7) set
The outlet side in rear impeller (5) is put, front impeller blade angle adjusting mechanism (3) is arranged in the wheel hub of front impeller (2), front impeller
Adjustment of blade angle mechanism (3) is connected with front impeller blade angular adjustment pull bar (4).
2. the coaxial bilobed wheel axial--flow blading pump of front impeller blade adjustable angle according to claim 1, its feature exist
In axial--flow blading pump of the front impeller (2) for adjustable blade burner section.
3. the coaxial bilobed wheel axial--flow blading pump of front impeller blade adjustable angle according to claim 1, its feature exist
In the number of blade of front impeller (2) is 3～5 pieces.
4. the coaxial bilobed wheel axial--flow blading pump of front impeller blade adjustable angle according to claim 1, its feature exist
In the number of blade of rear impeller (5) is 3～5 pieces.
5. the coaxial bilobed wheel axial--flow blading pump of front impeller blade adjustable angle according to claim 1, its feature exist
In the number of blade of rear guide vane body (7) is 6～8 pieces.
6. the coaxial bilobed wheel axial--flow blading pump of front impeller blade adjustable angle according to claim 1, its feature exist
In bilobate hub cap (8) is made up of leading portion and back segment, and leading portion is spherical shape, and back segment is cylindrical shape.
7. the coaxial bilobed wheel axial--flow blading pump of front impeller blade adjustable angle according to claim 1, its feature exist
In front impeller (2), rear impeller (5) are aial flow impeller.
8. the coaxial bilobed wheel axial--flow blading pump of front impeller blade adjustable angle according to claim 1, its feature exist
In the blade twist rate of rear impeller (5) is slightly larger than the blade twist rate of front impeller (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621178458.7U CN206144841U (en) | 2016-11-03 | 2016-11-03 | Coaxial bilobed wheel axial - -flow blading pump of preceding impeller blade angularly adjustable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621178458.7U CN206144841U (en) | 2016-11-03 | 2016-11-03 | Coaxial bilobed wheel axial - -flow blading pump of preceding impeller blade angularly adjustable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206144841U true CN206144841U (en) | 2017-05-03 |
Family
ID=58624363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621178458.7U Expired - Fee Related CN206144841U (en) | 2016-11-03 | 2016-11-03 | Coaxial bilobed wheel axial - -flow blading pump of preceding impeller blade angularly adjustable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206144841U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106351869A (en) * | 2016-11-03 | 2017-01-25 | 江苏省水利勘测设计研究院有限公司 | Coaxial double-impeller axial flow blade pump with adjustable front impeller blade angle |
| CN107165836A (en) * | 2017-06-20 | 2017-09-15 | 广东河海泵业机械有限公司 | One kind exempts from the in-service governor motion of motor adjustment type water pump blade angle |
-
2016
- 2016-11-03 CN CN201621178458.7U patent/CN206144841U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106351869A (en) * | 2016-11-03 | 2017-01-25 | 江苏省水利勘测设计研究院有限公司 | Coaxial double-impeller axial flow blade pump with adjustable front impeller blade angle |
| CN107165836A (en) * | 2017-06-20 | 2017-09-15 | 广东河海泵业机械有限公司 | One kind exempts from the in-service governor motion of motor adjustment type water pump blade angle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170503 |