CN101398011A - Movable vane type axial-flow pump - Google Patents
Movable vane type axial-flow pump Download PDFInfo
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- CN101398011A CN101398011A CNA2008102110392A CN200810211039A CN101398011A CN 101398011 A CN101398011 A CN 101398011A CN A2008102110392 A CNA2008102110392 A CN A2008102110392A CN 200810211039 A CN200810211039 A CN 200810211039A CN 101398011 A CN101398011 A CN 101398011A
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- 230000002093 peripheral effect Effects 0.000 claims description 11
- 238000011144 upstream manufacturing Methods 0.000 claims description 6
- 241000239290 Araneae Species 0.000 abstract 2
- 238000005265 energy consumption Methods 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000012530 fluid Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000009931 harmful effect Effects 0.000 description 2
- 208000016285 Movement disease Diseases 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000009958 sewing Methods 0.000 description 1
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Abstract
An aim of the invention is to increase pump efficiency and increase the stable area range of pump in a movable blade type axial flow pump. In the movable blade type axial flow pump (100), a plurality of impeller blades (1) which are installed on the periphery side of impeller hub (2) with a distance can rotate around a blade revolution shaft (6) set by each blade. A guiding blade wheel spider (4) is configured at the downstream side of impeller hub and is provided with a plurality of guiding blades (3) which are configured with a distance in axial direction. The outer diameter of guiding blade wheel spider at the part of the guiding blade is larger than the minimum outer diameter of impeller hub and less than the maximum outer diameter of impeller hub.
Description
Technical field
The present invention relates to axial-flow pump, particularly movable vane type axial-flow pump.
Background technique
Patent documentation 1: Japanese kokai publication hei 7-238899 communique
Patent documentation 2: Japanese kokai publication sho 58-197499 communique
Summary of the invention
In the impeller blade and impeller of above-mentioned patent documentation 1 and 2 records, wheel hub surface and tip surface are formed and wheel hub or the concentric sphere of housing, impeller blade and impeller can be rotated around its axle center.But in the hub side that forms the big sphere of the most advanced and sophisticated side of ratio of curvature, when fluid flow through impeller blade or impeller, flowing to break away from wheel hub surface.
Broken away from blade face if flow, be that the stationary blade axial-flow pump of straight line is compared with wheel hub surface and tip surface at the axle direction section then, and the loss of the hub side of impeller blade or impeller increases, and causes the performance of movable vane type axial-flow pump to reduce.Like this, in movable vane type axial-flow pump before, reduce though allow the efficient of pump, the scope of operating stably increases.
The present invention makes in view of the problem in the above-mentioned technology before, its objective is in movable vane type axial-flow pump, improves pump efficiency and increases the operating stably scope.Another object of the present invention is not damage the mobility of movable vane, suppresses the mobile disengaging at movable vane place.Other purpose is to reduce the loss of movable vane portion, reduces the energy consumption of movable vane type pump.At least realize any in the above-mentioned purpose.
To achieve these goals, in movable vane type axial-flow pump of the present invention, be located to devices spaced apart the plurality of impeller blade of impeller hub outer circumferential side, can rotate around the blade turning axle that each blade is set, it is characterized in that, the internal diameter end shape of impeller blade is a circular shape, the meridian plane shape of impeller hub outer circumferential face is a curve shape, the curvature of this curve shape is littler than the curvature of the circular arc in the central position identical with the central position of the internal diameter end circular arc of impeller blade, when the meridian plane shape of impeller hub is formed circular arc.
To achieve these goals, in movable vane type axial-flow pump of the present invention, be located to devices spaced apart the plurality of impeller blade of impeller hub outer circumferential side, can rotate around the blade turning axle that each blade is set, it is characterized in that, at the downstream side of impeller hub configuration guide blade wheel hub, this guide blade wheel hub have the Zhou Fangxiang devices spaced apart several guide blades of disposing, the external diameter of the guide blade wheel hub of guide blade place part is equal to or greater than the minimum outer diameter of impeller hub, is equal to or less than the maximum outside diameter of impeller hub.
In addition, in above-mentioned feature, the external diameter of impeller hub preferably upstream extremity is littler than downstream, and the downstream external diameter that the external diameter guide blade wheel hub, the guide blade assembly department cans be compared to above-mentioned impeller hub most is big.In addition, the external diameter that preferably makes the guide blade wheel hub increases towards flow direction gradually from the downstream external diameter of impeller hub, and contracted flow amount zone is set.In addition, have the general cylindrical shape housing that guide blade external diameter end is installed, the external diameter end shape with meridian plane section shape above-mentioned impeller blade inner peripheral surface in opposite directions and impeller blade this housing is concentrically ringed shape.In addition, the external diameter end shape of impeller blade also can be the little curved surface of curvature of ratio of curvature housing inner peripheral surface.
According to the present invention, in movable vane type axial-flow pump, owing to the outer diameter curvature of the wheel hub that is positioned at internal side diameter is bigger than the curvature of the hub side of blade, so, can suppress to be flowing in hub side and break away from blade face, improve pump efficiency and increase the operating stably scope.In addition, can not damage the mobile disengaging that suppresses the movable vane place movably of movable vane.In addition, because the loss of movable vane portion reduces, so the energy consumption of movable vane type axial-flow pump also reduces.
Description of drawings
Fig. 1 is an embodiment's of movable vane type axial-flow pump of the present invention meridian plane shape figure.
Fig. 2 is another embodiment's of movable vane type axial-flow pump of the present invention meridian plane shape figure.
Fig. 3 is another embodiment's of movable vane type axial-flow pump of the present invention meridian plane shape figure.
Fig. 4 is the meridian plane shape figure of movable vane type axial-flow pump shown in Figure 3.
Fig. 5 is another embodiment's of movable vane type axial-flow pump of the present invention meridian plane shape figure.
Embodiment
Below, with reference to several embodiments of description of drawings movable vane type axial-flow pump of the present invention.Fig. 1 represents an embodiment of movable vane type axial-flow pump 100 with the meridian plane sectional drawing.In the housing 10 of drum, accommodating the inner cylinder portion 11 of tubular.Inner cylinder portion 11 remains in the housing 10 by guide blade 3.
Inner cylinder portion 11 in the upstream-side-end of flow direction, has the radiator grille 12 of blunt nosed shape.Axle direction downstream side joining with radiator grille 12 is disposing impeller hub 2.Axle direction downstream side at impeller hub 2 is disposing guide blade wheel hub 4, and this guide blade wheel hub 4 has certain cylindrical part 4a of external diameter and external diameter narrowing portion 4b decrescence.The internal side diameter of guide blade 3 is fixed on the outer surface of cylindrical part 4a, and the outside diameter of guide blade 3 is fixed on the inwall of housing 10.Guide blade 3 has some, for example 6, with about equally arranged spaced at Zhou Fangxiang.
In the inner cylinder portion 11, impeller hub 2 is rotatable, and the main shaft 5 that is being connected with this impeller hub 2 stretches out from the rear end of guide blade wheel hub 4.The prime mover that is connecting drives impeller wheel hub 2 on this main shaft 5 is motor (figure does not show).The some positions of Zhou Fangxiang at impeller hub 2 outer circumferential sides are installed with impeller blade 1.This impeller blade 1 can rotate in the direction vertical with the axle direction of inner cylinder portion 11, promptly, can rotate around the radial direction axis (blade turning axle) 6 of axial-flow pump 100.
External diameter in the meridian plane section of movable vane type axial-flow pump 100, impeller hub 2 is a circular arc, and the radius of circular arc is R5.The center of arc of R5 extends at the opposition side of blade turning axle 6 with the impeller blade 1 of the intersection point of the central shaft 13 of axial-flow pump 100 on blade turning axle 6.The rearward end external diameter of the external diameter of the upstream-side-end of impeller hub 2 and radiator grille 12 is roughly the same, and the front end external diameter of the external diameter of the end of downstream side of impeller hub 2 and guide blade wheel hub 4 is roughly the same.Therefore, the shape of impeller hub 2 is that the part of blade turning axle 6 is the most outstanding towards stream.
Be installed in the impeller blade 1 on the impeller hub 2, to be that internal diameter is distolateral in impeller hub 2 sides be exposed in the stream rotatingshaft 14 that this impeller blade 1 is rotated slightly.The internal side diameter end of impeller blade 1 is positioned at the outside diameter of the exposed division of rotatingshaft 14.Here, the internal side diameter end of impeller blade 1 also is that radius is the circular arc of R6, and its center is on blade turning axle 6.The radius of arc R6 of impeller blade 1 internal diameter end is bigger than the peripheral radius R5 of impeller hub 2.
The outside diameter end of impeller blade 1 also forms circular arc, and the center of its circular arc is the intersection point of the central shaft of blade turning axle 6 and axial-flow pump 100.The radius of this circular arc is R4.The inner peripheral surface of housing 10 is cut into the circular arc that radius is R3, and the center of the circular arc of this radius R 3 is intersection points of the central shaft 13 of blade turning axle 6 and axial-flow pump 100.Here, the external diameter end radius of arc R4 of impeller blade 1 is than a little bit smaller slightly point of radius R 3 that forms circular arc interior week of housing 10.In addition, the axle direction length of impeller blade 1 is that internal diameter is distolateral than the distolateral length of external diameter, and the meridian plane shape approximation of impeller blade 1 is in trapezoidal.
In the present embodiment axial-flow pump 100 that constitutes like this, for impeller blade 1 can be rotated around blade turning axle 6, be the curvature R6 of impeller blade 1 internal diameter end greatlyyer than the curvature R5 of impeller hub 2 outer diametric planes, so, rear portion or rear at impeller blade 1, control flows 8, can prevent to flow not to produce disengaging along the outer circumferential face shape of cylindrical part 11.Therefore, at the internal side diameter (hub side) of the outlet of impeller blade 1, can avoid forming the zone that causes impeller blade 1 insufficient work because of the disengaging of flowing.By the improvement of flowing, from the upstream side (inlet) of impeller blade 1 to the downstream side Zone Full of (outlet), impeller blade 1 can both be worked fully.
That is,, can improve the efficient of axial-flow pump more effectively to the water energize according to present embodiment.In addition, peeling off of producing in the downstream side of impeller blade 1 makes movement disorder, can produce harmful effect to guide blade 3, still, and in the present embodiment, owing to prevented this disorder of flowing, so can avoid this harmful effect.In addition, the loss of the hub side of guide blade 3 also reduces.Like this, can reduce the energy consumption of movable vane type axial-flow pump 100.
In the above-described embodiments, be that the periphery of the root side of impeller blade 1 and impeller hub 2 is all formed circular arc, and, the central position of the center of the R of change impeller blade 1 root side and the R of impeller hub 2 peripheries.But the peripheral shape of impeller hub is not limited thereto, and also can become the R of ratio of curvature impeller blade 1 root side little sphere or ellipsoidal surface or be similar to the free form surface of these spheres.
But, when becoming above-mentioned free form surface, for the function that keeps movable vane type axial-flow pump, be the mobility of impeller blade 1, must make the curvature of the ratio of curvature of impeller blade 1 root side and its impeller hub 2 in opposite directions big.Like this, can be so that the fluid by impeller blade 1 flow 7 along what the outer circumferential face of impeller hub 2 flowed the disengaging zone that produces in hub side, mobile along the outer circumferential face of impeller hub 2.
Like this, impeller blade 1 outlet side and the mobile of hub side improve, and the Zone Full from the inlet of impeller blade 1 to outlet, the rotating power of impeller supply to waterborne as the action fluid efficiently, and the efficient of movable vane type axial-flow pump improves.In addition, before, passed through in the flowing of impeller blade 1, sometimes because of disengaging produces turbulent flow 7, in the present embodiment owing to can prevent or reduce this turbulent flow 7, so, can avoid the influence of turbulent flow 7 to feed through to the guide blade 3 that is configured in impeller blade 1 downstream side.Therefore, the loss of the hub side of guide blade 3 also reduces, and the energy consumption of movable vane type axial-flow pump reduces.
In the above-described embodiments, be the circular arc that the most advanced and sophisticated side of impeller blade 1 is processed into R4, the inner peripheral surface of housing 10 also is processed into the circular arc of R3, still, also can with hub side similarly, they are become the little free form surface of curvature.The most advanced and sophisticated side shape of impeller blade 1, when concentric spherical becomes the little free form surface of curvature, can make by the flowing of impeller blade 1, become than flowing near straight line before in most advanced and sophisticated side.In addition, make impeller blade 1 wraparound rotating shaft 6 rotation, when changing direction because the tip of impeller blade 1 is not a concentric spherical, so, impeller blade 1 most advanced and sophisticated and and the inner peripheral surface of this tip housing 10 in opposite directions between the gap change.
If the most advanced and sophisticated side clearance of impeller blade 1 is enlarged, then leakage flow increases.For this reason, sometimes the efficient of movable vane type axial-flow pump also be reduced to the loss that curvature reduced and obtain reduce above.The position at the tip of impeller blade 1 is the maximum outside diameter position of impeller blade 1, the position of the Zhou Fangxiang speed maximum when being main shaft 5 rotations.Because in the position at tip peripheral speed maximum, so 2 pressure differences that the surface is pressure side and suction surface of impeller blade 1 also are in the tip location maximum or approach maximum.
Therefore, to the influence of the efficient of movable vane type axial-flow pump, the influence of the mobile leakage of comparison impeller blade 1 hub side is big.In view of the above, when the wheel hub surface of impeller blade 1 adopted the big free form surface of curvature, the leakage flow of considering the gap caused the increase of loss, the curvature of decision impeller blade 1 and housing 10 inner peripheral surfaces etc.
Below, with reference to Fig. 2 another embodiment of the present invention is described.Fig. 2 is the meridian plane sectional drawing of movable vane type axial-flow pump.The difference of present embodiment and the foregoing description is that the outer circumferential face shape the hub side shape of impeller blade 1 and impeller hub 2 becomes concentric spherical.The periphery of impeller hub 2 forms the arc surface of R1 at axle direction, and the wheel hub surface of impeller blade 1 forms the arc surface of R2.Impeller blade 1 can be the center rotation with blade turning axle 6.
In the present embodiment, except above-mentioned feature, also have following characteristics: the outer circumference diameter of impeller hub 2 is D1 at the allocation position upstream side of impeller blade 1, is D3 in the allocation position downstream side of impeller blade 1.Diameter D3 is equal to or greater than diameter D1.According to present embodiment, with the foregoing description similarly, passed through flowing of impeller blade 1, even also flow, can avoid the flow losses that produce because of breaking away from along the outer circumferential face of impeller hub 2 in hub side.Like this, can reduce the energy consumption of movable vane type axial-flow pump.
Below, with reference to Fig. 3 and Fig. 4, other embodiment of movable vane type axial-flow pump of the present invention is described.These figure are meridian plane sectional drawings of movable vane type axial-flow pump.Be suitable for such pump, that is, the operating range of pump, can turn round to the big water quantity zone in the larger context from little water yield zone.
When adopting the pump expansion actuating range of the various embodiments described above, must make impeller blade 1 do the big action of reversing around blade turning axle 6.At this moment, if do not strengthen the wheel hub surface of impeller blade 1 and the gap between impeller hub 2 outer circumferential faces, then the wheel hub of impeller blade 1 and impeller hub 2 disturb.As a result, though unlike the most advanced and sophisticated side of impeller blade 1, even the hub side of impeller blade 1, if the gap increases, leakage flow also increases, and the loss of movable vane type axial-flow pump increases.
In order to address this problem, in the present embodiment, become the mobile shape of sewing in the hub side gap that to reduce impeller blade 1.Specifically, the hub side shape of impeller blade 1 is made the circular arc of radius R 2, the meridian plane section shape of the periphery of the impeller hub corresponding with it 2 is become the radius R 1 (circular arc of R1＜R2).The center of the circular arc of radius R 1, R2 is positioned at same position on the central axis of main shaft 5.Certainly, impeller blade 1 can rotate around blade turning axle 6.
In the downstream of impeller blade 1, roughly equally spaced disposing some guide blades 3 along Zhou Fangxiang.The external diameter of the hub diameter of guide blade 3 or guide blade wheel hub 4, than impeller hub 2 the path of part is big in opposite directions with impeller blade 1.That is, be configured in the external diameter of impeller hub 2 of the centerline side of movable vane type axial-flow pump, increase gradually towards flow direction from the diameter D1 that is positioned at impeller blade 1 upstream side, 6 ones of blade turning axlees, become maximum diameter 2 * R1, reduce gradually then, become minimum diameter D2.At the inlet side of guide blade wheel hub 4, become the external diameter that is equal to or slightly greater than D2.With guide blade 3 part in opposite directions, diameter is bigger than D2, becomes the diameter that is equal to or less than 2 * R1.
In the embodiment shown in fig. 3, the external diameter of guide blade wheel hub 4 at the upstream side that flows, is the cylindrical shape than the slightly bigger point of minimum diameter D2 of impeller hub 2, and from having crossed the part of guide blade 3, diameter reduces gradually.In the embodiment shown in fig. 4, the external diameter of guide blade wheel hub 4 from increasing gradually with the roughly the same external diameter of the diameter D2 that is positioned at impeller hub 2 downstream sides, 3 ones of guide blades, becomes the cylindrical shape of same diameter.After having crossed guide blade 3, with similarly embodiment illustrated in fig. 3, the external diameter of guide blade wheel hub 4 reduces gradually.
When constituting the external diameter of guide blade wheel hub 4 in this wise, in Fig. 3 embodiment, the hub side that is flowing in that can reduce to pass through impeller blade 1 breaks away from the zone that becomes turbulent flow.Therefore, the turbulent flow that causes of peeling off that can avoid the hub side at the outlet side of impeller blade 1 to produce feeds through to guide blade 3, can reduce the loss of the hub side of guide blade 3.Therefore, can reduce the energy consumption of movable vane type axial-flow pump.
In addition, in the embodiment shown in fig. 4,, the hub side shape of the guide blade 3 that is located at the impeller downstream is become above-mentioned shape, be provided with contracted flow amount zone in order further to reduce from impeller blade 1 to guide blade the energy consumption 3 the flow region.Can further reduce to peel off the regions of turbulent flow that causes because of what the hub side at the outlet side of impeller blade 1 produced.Meanwhile, the turbulent flow that causes peeling off of producing of the hub side of impeller blade 1 outlet side can be avoided turbulent flow to feed through to guide blade 3 by rectification.
The meridian plane section of Fig. 5, expression are guide blade 3 shown in Figure 4 and guide blade wheel hub 4 and impeller blade 1 embodiment illustrated in fig. 1 and impeller hub 2 combinations and the example of formation movable vane type axial-flow pump.The wheel hub surface of impeller blade 1 is that radius is the circular arc of R5, and the meridian plane shape of the external diameter of impeller hub 2 is that radius is the circular arc of R6.The center of the circle of radius R 5 and radius R 6 is not at same position.In addition, the wheel hub shape of impeller blade 1 except circular arc, also can be oval or free form surface similar with it.
The inlet side external diameter of guide blade wheel hub 4, roughly the same with the outlet side outer diameter D 2 of impeller hub 2, and become the shape that has formed towards the contracted flow amount zone that the mobile direction of water increases gradually.In addition, shown in the embodiment of Fig. 3, the external diameter of guide blade wheel hub 4 is roughly certain external diameter at inlet side, and this certain external diameter also can be equal to or less than the maximum outside diameter 2 * R1 of impeller hub 2.
According to present embodiment, can reduce the hub side that is flowing in of having passed through impeller blade 1 does not flow and towards the disengaging zone of external diameter effluent along the outer circumferential face shape of impeller hub 2, and, can rectification have passed through the turbulent flow of impeller blade 1, can avoid this turbulent flow to feed through to guide blade.Therefore, can reduce the energy consumption of movable vane type axial-flow pump.
Claims (7)
1. movable vane type axial-flow pump, be located to devices spaced apart the plurality of impeller blade of impeller hub outer circumferential side, can rotate around the blade turning axle that each blade is set, it is characterized in that, the internal diameter end shape of above-mentioned impeller blade is a circular shape, the meridian plane shape of above-mentioned impeller hub outer circumferential face is a curve shape, the curvature of this curve shape is littler than the curvature of the circular arc in the central position identical with the central position of the internal diameter end circular arc of above-mentioned impeller blade, when the meridian plane shape of impeller hub is formed circular arc.
2. movable vane type axial-flow pump, be located to devices spaced apart the plurality of impeller blade of impeller hub outer circumferential side, can rotate around the blade turning axle that each blade is set, it is characterized in that, disposing the guide blade wheel hub in the downstream side of above-mentioned impeller hub, this guide blade wheel hub have the Zhou Fangxiang devices spaced apart several guide blades of disposing, the external diameter of the above-mentioned guide blade wheel hub of above-mentioned guide blade place part is equal to or greater than the minimum outer diameter of above-mentioned impeller hub, is equal to or less than the maximum outside diameter of impeller hub.
3. movable vane type axial-flow pump as claimed in claim 1 or 2 is characterized in that, the external diameter of above-mentioned impeller hub is that upstream extremity is littler than downstream.
4. movable vane type axial-flow pump as claimed in claim 1 or 2 is characterized in that, near external diameter above-mentioned guide blade wheel hub, the guide blade assembly department is bigger than the downstream external diameter of above-mentioned impeller hub.
5. movable vane type axial-flow pump as claimed in claim 4 is characterized in that, the external diameter of above-mentioned guide blade wheel hub increases towards flow direction gradually from the downstream external diameter of impeller hub, is provided with contracted flow amount zone.
6. movable vane type axial-flow pump as claimed in claim 1 or 2, it is characterized in that, have the general cylindrical shape housing that guide blade external diameter end is installed, the external diameter end shape with meridian plane section shape above-mentioned impeller blade inner peripheral surface in opposite directions and impeller blade this housing is concentrically ringed shape.
7. movable vane type axial-flow pump as claimed in claim 1 or 2 is characterized in that, the external diameter end shape of above-mentioned impeller blade is the little curved surface of inner peripheral surface curvature of the above-mentioned housing of ratio of curvature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410053634.3A CN103758780B (en) | 2007-09-25 | 2008-08-20 | Movable vane type axial-flow pump |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007247462 | 2007-09-25 | ||
| JP2007247462A JP4882939B2 (en) | 2007-09-25 | 2007-09-25 | Movable blade axial flow pump |
| JP2007-247462 | 2007-09-25 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410053634.3A Division CN103758780B (en) | 2007-09-25 | 2008-08-20 | Movable vane type axial-flow pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101398011A true CN101398011A (en) | 2009-04-01 |
| CN101398011B CN101398011B (en) | 2014-07-30 |
Family
ID=40516785
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410053634.3A Expired - Fee Related CN103758780B (en) | 2007-09-25 | 2008-08-20 | Movable vane type axial-flow pump |
| CN200810211039.2A Expired - Fee Related CN101398011B (en) | 2007-09-25 | 2008-08-20 | Movable vane type axial-flow pump |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410053634.3A Expired - Fee Related CN103758780B (en) | 2007-09-25 | 2008-08-20 | Movable vane type axial-flow pump |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4882939B2 (en) |
| CN (2) | CN103758780B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105673559A (en) * | 2016-04-13 | 2016-06-15 | 上海理工大学 | Efficient meridian acceleration axial flow fan with casing |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102588329A (en) * | 2012-03-13 | 2012-07-18 | 张仁田 | Axial-flow type water pump with blade-type adjustable line segment |
| KR102106934B1 (en) * | 2013-06-28 | 2020-05-07 | 자일럼 아이피 매니지먼트 에스.에이 알.엘. | Propeller pump for pumping liquid |
| CN106958534B (en) * | 2017-04-28 | 2023-05-16 | 合肥工业大学 | Axial flow pump impeller capable of improving cavitation resistance |
| CN110159585B (en) * | 2019-05-23 | 2024-02-13 | 西华大学 | Disc pump impeller |
| CN117366008B (en) * | 2023-10-31 | 2024-03-12 | 兰州理工大学 | Multiphase mixed transmission impeller with high light and heavy phase separation resistance |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5885399A (en) * | 1981-11-13 | 1983-05-21 | Hitachi Ltd | Pullout type axial pump with movable blades |
| JPS58172495A (en) * | 1982-04-02 | 1983-10-11 | Hitachi Ltd | Mechanical type blade movable device |
| DE4226204A1 (en) * | 1992-08-07 | 1994-02-10 | Halberg Maschbau Gmbh & Co | Rotationally secure attachment of blade foot to flow machine hub - uses toothed position rings to ensure chosen angular setting is maintained |
| CN2152105Y (en) * | 1992-11-27 | 1994-01-05 | 卜漱和 | Two-way axial-flow pump |
-
2007
- 2007-09-25 JP JP2007247462A patent/JP4882939B2/en not_active Expired - Fee Related
-
2008
- 2008-08-20 CN CN201410053634.3A patent/CN103758780B/en not_active Expired - Fee Related
- 2008-08-20 CN CN200810211039.2A patent/CN101398011B/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105673559A (en) * | 2016-04-13 | 2016-06-15 | 上海理工大学 | Efficient meridian acceleration axial flow fan with casing |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2009079493A (en) | 2009-04-16 |
| JP4882939B2 (en) | 2012-02-22 |
| CN103758780B (en) | 2016-03-23 |
| CN101398011B (en) | 2014-07-30 |
| CN103758780A (en) | 2014-04-30 |
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Owner name: HITACHI,LTD. Free format text: FORMER OWNER: HITACHI PLANT TECHNOLOGIES LTD. Effective date: 20140108 |
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