CN101235824B - Tubular pump - Google Patents
Tubular pump Download PDFInfo
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- CN101235824B CN101235824B CN 200810003249 CN200810003249A CN101235824B CN 101235824 B CN101235824 B CN 101235824B CN 200810003249 CN200810003249 CN 200810003249 CN 200810003249 A CN200810003249 A CN 200810003249A CN 101235824 B CN101235824 B CN 101235824B
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- impeller
- tubular
- axial
- flow blower
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Abstract
The invention solves the technical problems about inhibition to generation of fluid loss and reduction of energy consumption in a tubular pump. In the invention, the tubular pump includes an impeller (1), a driving device (13), a shaft (5), a fluid shell (15) and a guide impeller (7); the impeller (1) includes a shaft hub (2); the driving device (13) includes a driving source (4) provided within a tubular shell (3) which is equipped at downstream side of the impeller (1) and includes the outer diameter larger than that of the shaft hub (2); the shaft (5) combines the shaft hub (2) with the driving source (4); the fluid shell (15) takes the contained part of the impeller (1) as a small diameter portion (15a), and takes the contained part of the driving device (13) as a large diameter portion (15b); the guide impeller (7) is used for deflect a convolution stream at discharging side of the impeller (1) into an axial stream. The guide impeller (7) and the impeller (1) are together located within the small diameter portion (15a), and set in a manner of being located between the impeller (1) and the driving device (13).
Description
Technical field
The present invention relates to tubular pump, particularly be fit to driving source is arranged on transverse axis tubular pump in the pump case in downstream side of impeller.
Background technique
Tubular pump generally is used to send water or draining etc., and its output and size are various, and as shown in Figure 4, its maximum feature is that driving source 4 is arranged in the tubular shell 3, and this tubular shell 3 is arranged on the downstream of impeller 1.Therefore, because need be to carrying out water shutoff in the tubular shell 3, so, under situation mostly,, use the smaller motor that gets final product of air regenerating device as driving source 4.In this case, because the necessity of accommodating motor is arranged, so generally the external diameter than the propeller boss 2 of impeller 1 is big for the external diameter of tubular shell 3.In view of the above, near the stream portion that diameter is little impeller 1 makes external diameter be in the stream than the propeller boss 2 big tubular shells 3 of impeller 1 in the downstream of impeller 1, must become the stream portion that has enlarged at radial direction.This enlarges stream portion and impeller 1 closely exists, and in this expansion stream portion the guide blades 7 that the speed that will be obtained by impeller 1 can be converted to the pressure energy is set.Because the symbol identical with symbol Fig. 1-shown in Figure 3 among Fig. 4 is identical or suitable article, so the repetitive description thereof will be omitted.
In addition, as the patent documentation relevant, enumerated the disclosed patent documentation of Fig. 3 that the spy opens 2004-190567 communique (patent documentation 1) with this tubular pump.
[patent documentation 11 spies open 2004-190567 communique (Fig. 3)
In above-mentioned tubular pump in the past, because expansion stream portion and impeller 1 closely exist, so the stream that circles round of discharging from impeller 1 flows directly into the stream portion that enlarges.Therefore, this stream that circles round is difficult to flow along the wall of guide blades 7 and stream, flows and peels off and disturbance, not only the speed that is obtained by impeller 1 can not be converted to the pressure energy effectively, but also produce the big loss that causes because of disturbance, become the major reason of the efficient reduction that makes pump integral body.
One side is with reference to Fig. 5, and one side elaborates relevant this and flow into the situation that flows of circling round that enlarges circuit portion.
Stream flows into the diffuser have the conial ring shape of guide blades 7 on radially enlarged stream if circle round, and then centrifugal force is towards the Vertical direction outer wall side effect of stream wall, for its balance, the pressure ratio inwall side height of the outer wall side of stream.Under the state of such field of flow, in the little zone of the speed of circling round near the wall that is present in the inwall side that enlarges stream the limiting bed because centrifugal force is little, so can not with this pressure field balance, can not flow to the big main flow direction of relative velocity, be pushed and get back to the inwall side.Therefore, near inwall, the layer of the low energy fluid that such speed is little is stagnated, even in the main flow direction stream that has radially enlarged, can not overcome pressure gradient towards the downstream, the direction little to pressure gradient flows, and therefore, the angle that flows departs from main flow greatly, in the inwall side, be formed on the limiting bed that reverses that each course torsional direction flows, sometimes, can produce adverse current.
In addition, because near the wall of guide blades 7, also produce limiting bed, so, flowing of slow-footed zone in limiting bed inside still can not be resisted from the pressure gradient of inwall towards outer wall, and in the inwall side flow, further increase the savings of low energy fluid, the scale of counter-current flow is enlarged.Have again, because near the inwall side of the inlet of guide blades 7, resembling flows above-mentioned departs from main flow greatly, so, the angle of the inlet of guide blades 7 and the angle that flows are inconsistent greatly, flow not along guide blades 7 but be stripped from, sometimes, yield to the pressure gradient of main flow direction in addition and the situation of adverse current.
Therefore, though can consider to scrutinize the shape of guide blades, because be created in the flowing of complexity of this expansion stream inside radially, so, be difficult to fully suppress the disturbance of flowing of this inwall side, be difficult to realize high pump efficiency.
First purpose of the present invention provide a kind of can suppression fluid the generation of loss, and can seek the tubular pump that energy consumption reduces.
Second purpose of the present invention provides a kind of making and suppresses vibration, and stable running becomes possibility, and generation that can the suppression fluid loss, and can seek the tubular pump that energy consumption reduces.
Summary of the invention
Be used to realize that first mode of the present invention of the first above-mentioned purpose is a kind of tubular pump, this tubular pump has impeller, drive unit, axle, stream housing, guide blades, and this impeller has propeller boss; This drive unit has the driving source that is set in the tubular shell, and described tubular shell is configured in the downstream side of above-mentioned impeller and has the big external diameter of external diameter than the propeller boss of above-mentioned impeller; This is with the driving source combination of the propeller boss and the above-mentioned drive unit of above-mentioned impeller; The part that this stream housing will be accommodated above-mentioned impeller is as minor diameter, and the part that will accommodate above-mentioned drive unit is as large-diameter portion; This guide blades is used for the circling round of discharge side at above-mentioned impeller circulated to being axial flow, so that above-mentioned guide blades is positioned at above-mentioned minor diameter with above-mentioned impeller, and the mode between above-mentioned impeller and above-mentioned drive unit is provided with.
Better concrete configuration example in relevant first mode of the present invention is as described below.
(1) dispose above-mentioned impeller and above-mentioned drive unit in the horizontal direction, above-mentioned axle is arranged on transverse axis, the external diameter that makes above-mentioned guide blades is identical diameter from its inlet side to outlet side.
(2) above-mentioned tubular shell has external diameter from the expansion section that inlet side begins to enlarge, and the large-diameter portion of above-mentioned stream housing has the expansion section that the expansion section with above-mentioned tubular shell enlarges accordingly.
In addition, be used to realize that second mode of the present invention of the second above-mentioned purpose is a kind of tubular pump, this tubular pump has impeller, drive unit, axle, stream housing, guide blades, and this impeller has propeller boss; This drive unit has the motor that is set in the tubular shell, and described tubular shell is configured in the downstream side of above-mentioned impeller, and has the big external diameter of external diameter than the propeller boss of above-mentioned impeller; This is with the propeller boss and the said motor combination of above-mentioned impeller; The part that this stream housing will be accommodated above-mentioned impeller is as minor diameter, and the part that will accommodate above-mentioned drive unit is as large-diameter portion; This guide blades is used for the circling round of discharge side at above-mentioned impeller circulated to being axial flow, so that above-mentioned guide blades is positioned at above-mentioned minor diameter with above-mentioned impeller, and the mode between above-mentioned impeller and above-mentioned tubular shell is provided with, upstream side at above-mentioned impeller is provided with circular cylindrical shell, make above-mentioned axle run through above-mentioned impeller, extend in the above-mentioned circular cylindrical shell, by comparing the set bearing of the above-mentioned circular cylindrical shell that is positioned at anti-motor-side with above-mentioned impeller and comparing the above-mentioned axle of the bearings that is arranged on motor-side with above-mentioned impeller.
Better concrete configuration example in relevant second mode of the present invention is as described below.
(1) by being arranged on the bearing and the above-mentioned axle of bearings that is arranged in the above-mentioned tubular shell in the above-mentioned circular cylindrical shell.
In addition, be used to realize that the Third Way of the present invention of the second above-mentioned purpose is a kind of tubular pump, this tubular pump has impeller, drive unit, axle, stream housing, guide blades, and this impeller has propeller boss; This drive unit has the motor that is set in the tubular shell, and described tubular shell is configured in the downstream side of above-mentioned impeller, and has the big external diameter of external diameter than the propeller boss of above-mentioned impeller; This is with the propeller boss and the said motor combination of above-mentioned impeller; The part that this stream housing will be accommodated above-mentioned impeller is as minor diameter, and the part that will accommodate above-mentioned drive unit is as large-diameter portion; This guide blades is used for the circling round of discharge side at above-mentioned impeller circulated to being axial flow, so that above-mentioned guide blades is positioned at above-mentioned minor diameter with above-mentioned impeller, and the mode between above-mentioned impeller and above-mentioned tubular shell is provided with, by being arranged on the bearing and the above-mentioned axle of bearings that is arranged in the above-mentioned tubular shell in the above-mentioned guide blades.
The invention effect
According to the tubular pump of relevant first mode of the present invention, can suppression fluid the generation of loss, and can seek energy consumption and reduce.
In addition, according to relevant of the present invention second and the tubular pump of Third Way, make and suppress vibration, stable running becomes possibility, and generation that can the suppression fluid loss, and can seek energy consumption and reduce.
Description of drawings
Fig. 1 is the cross-sectional schematic of the tubular pump of first mode of execution of the present invention.
Fig. 2 is the cross-sectional schematic of the tubular pump of second mode of execution of the present invention.
Fig. 3 is the cross-sectional schematic of the tubular pump of the 3rd mode of execution of the present invention.
Fig. 4 is the cross-sectional schematic of tubular pump in the past.
Fig. 5 is the ideograph of the appearance that flows that radially enlarges stream that is illustrated in the tubular pump of Fig. 4.
Symbol description
1... impeller, 2... propeller boss, 3... tubular shell, 3a... expansion section, 4... driving source, 5... axle, 6... bearing, 7... guide blades, 9... bearing, 10... circular cylindrical shell, 11... bearing, 12... suction passage, 13... drive unit, 14... discharge stream, 15... stream housing, 15a... minor diameter, 15b... large-diameter portion, 15b1... expansion section.
Embodiment
Below, use accompanying drawing, a plurality of mode of execution of the present invention is described.Article that identical symbolic representation in the figure of each mode of execution is identical or suitable article.
(first mode of execution)
Use Fig. 1, the tubular pump of first mode of execution of the present invention is described.Fig. 1 is the cross-sectional schematic of the tubular pump of first mode of execution of the present invention.
The tubular pump of present embodiment is the transverse axis axial flow tubular pump that is used to send water or draining etc., is to constitute by having impeller 1, guide blades 7, drive unit 13, axle 5 and stream housing 15.
The minor diameter 15a of stream housing 15 for accommodate impeller 1 and guide blades 7 the two, have in the downstream side of comparing with impeller and to compare the part that has prolonged with example in the past.The internal diameter of the part of accommodating impeller 1 among the minor diameter 15a is identical diameter with the internal diameter of the part of accommodating guide blades 7, and the external diameter of the external diameter of impeller 1 and guide blades 7 is roughly the same diameter.
In the impeller side of tubular shell 3, form external diameter from the expansion section 3a that inlet side begins to enlarge, in the impeller side of the large-diameter portion 15b of stream housing 15, form the expansion section 15b1 that the expansion section 3a with tubular shell 3 enlarges accordingly.Constitute by this, between the large-diameter portion 15b of tubular shell 3 and stream housing 15, form stream with enough sectional areas.
In the tubular pump of this formation,, make axle 5 rotations come rotary blade 1 by driving driving source 4.In view of the above, water is inhaled into impeller 1 from the suction passage 12 of stream housing 15, discharges to guide blades 7 sides by impeller 1.
In the present embodiment, the guide blades 7 that is configured in the downstream of impeller 1 is present between impeller 1 and the tubular shell 3, the diameter of impeller 1 is identical with the external diameter of guide blades 7, be not have the formation that changes from the inlet of guide blades 7 to its external diameter of outlet, therefore, from the stream that circles round of impeller 1 outflow, its direction that flows turns to axially by guiding impeller 7, the downstream of guide blades 7 to radially expansion stream portion, the roughly axial mobile main flow composition that becomes, and flowing into.Therefore, can not produce near the disturbance of flowing the inwall side that routine in the past such inflow that flows to expansion stream portion because of circling round causes, improve the efficient of tubular pump, can suppress energy consumption.
In addition, just can make the pump overall compact if the guide blades axial length in the formation of this tubular pump is short, suitable aspect the vibration that suppresses impeller 1 and axle 5, preferably make the quantity of blade more, make the circulation of circling round from impeller 1 to serving as axial with short axial distance than the guide blades of common axial-flow pump.
(second mode of execution)
Then, use Fig. 2, the tubular pump of second mode of execution of the present invention is described.Fig. 2 is the cross-sectional schematic of the tubular pump of second mode of execution of the present invention.This second mode of execution is different with first mode of execution aspect following, and other the aspect and first mode of execution are basic identical, and therefore, the repetitive description thereof will be omitted.
In this second mode of execution, setting into the oral-lateral front end at the upstream side of impeller 1 is cone shape circular cylindrical shell 10, make axle 5 run through impeller 1, extend in the circular cylindrical shell 10, by comparing the set bearing 9 of the circular cylindrical shell 10 that is positioned at anti-drive unit side with impeller 1 and comparing bearing 6 back shafts 5 that are arranged on the drive unit side with impeller 1.This bearing 6 is set in the tubular shell 3.
According to this second mode of execution, because the setting by guide blades 7, the axle 5 that has been extended compared with the past is supported by the bearing 9,6 of the axial both sides of impeller 1, so, even under the situation that pump maximizes, also can provide and suppress vibration, and the tubular pump of energy steady running.
In addition, the tubular shell 10 of the bearing 9 of the upstream of built-in impeller 1 has been for having considered to reduce the front end shape of the slyness of fluid loss fully, in addition, be stream from suction passage 12 beginning contracted flows in this part, therefore, do not have the increase of losing substantially.Therefore, can access the efficient that has not only improved tubular pump, suppress energy consumption, and, even in large-scale tubular pump, also can realize the pump of stable pump running.
(the 3rd mode of execution)
Then, use Fig. 3, the tubular pump of the 3rd mode of execution of the present invention is described.Fig. 3 is the cross-sectional schematic of the tubular pump of the 3rd mode of execution of the present invention.The 3rd mode of execution is different with first mode of execution aspect following, and other the aspect and first mode of execution are basic identical, and therefore, the repetitive description thereof will be omitted.
In the 3rd mode of execution, by bearing 11 that in guide blades 7, is provided with and bearing 6 back shafts 5 that in tubular shell 3, are provided with.According to the 3rd mode of execution, because the setting by guide blades 7, the axle 5 that has been extended compared with the past is supported by the bearings the most nearby 11 of impeller 1, so, make the stable running that has suppressed vibration become possibility, have, in the upstream of impeller 1, there is no need is bearing construction again, so, structure is oversimplified, and a kind of manufacture cost that can provide can be provided reduce, and the tubular pump of the excellent in efficiency of runs steadily.
Claims (6)
1. tubular pump, this tubular pump has: axial-flow blower, tubular shell, drive unit, axle, stream housing, guide blades,
This axial-flow blower has propeller boss at central part;
This tubular shell is configured in the downstream side of above-mentioned axial-flow blower, and has the big external diameter of external diameter than the propeller boss of above-mentioned axial-flow blower;
This drive unit is set in this tubular shell, and has driving source;
This is with the propeller boss and the above-mentioned driving source combination of above-mentioned axial-flow blower;
This stream housing built-in above-mentioned axial-flow blower and tubular shell, form minor diameter in the part of built-in above-mentioned axial-flow blower, form large-diameter portion in the part of built-in above-mentioned tubular shell;
This guide blades is used for the circling round of discharge side at above-mentioned axial-flow blower circulated to being axial flow, it is characterized in that,
Above-mentioned guide blades is positioned at the minor diameter of above-mentioned stream housing with above-mentioned axial-flow blower, and the external diameter that makes above-mentioned guide blades is identical diameter from its inlet side to outlet side, and between above-mentioned axial-flow blower and above-mentioned drive unit,
Form the expansion section that enlarges from the downstream side external diameter of above-mentioned guide blades at above-mentioned tubular shell, form with the expansion section of above-mentioned tubular shell accordingly from the minor diameter of this stream housing to expansion section that large-diameter portion enlarges at above-mentioned stream housing.
2. tubular pump as claimed in claim 1 is characterized in that, disposes above-mentioned impeller and above-mentioned drive unit in the horizontal direction, and above-mentioned axle is arranged on transverse axis.
3. tubular pump as claimed in claim 1 is characterized in that, at the upstream side of above-mentioned axial-flow blower, circular cylindrical shell is arranged in the above-mentioned stream housing, makes above-mentioned axle run through above-mentioned impeller, extends in the above-mentioned circular cylindrical shell.
4. tubular pump as claimed in claim 3, it is characterized in that, two bearings that support above-mentioned axle are set, and a bearing supports above-mentioned axle in the opposite side of the motor of comparing with above-mentioned axial-flow blower, and another bearing supports above-mentioned axle between above-mentioned guide blades and motor.
5. tubular pump as claimed in claim 4 is characterized in that, an above-mentioned bearing is set in the above-mentioned circular cylindrical shell, and above-mentioned another bearing is set in the above-mentioned tubular shell.
6. tubular pump as claimed in claim 1 is characterized in that, two bearings that support above-mentioned axle are set, and a bearing is set in the above-mentioned guide blades, and another bearing is set in the above-mentioned tubular shell.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007021628 | 2007-01-31 | ||
| JP2007-021628 | 2007-01-31 | ||
| JP2007021628A JP4844414B2 (en) | 2007-01-31 | 2007-01-31 | Tubular pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101235824A CN101235824A (en) | 2008-08-06 |
| CN101235824B true CN101235824B (en) | 2011-05-18 |
Family
ID=39728224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200810003249 Active CN101235824B (en) | 2007-01-31 | 2008-01-28 | Tubular pump |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4844414B2 (en) |
| CN (1) | CN101235824B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011018865A1 (en) * | 2009-08-12 | 2011-02-17 | 小山かすみ | Method for manufacturing a functional gel |
| JP5567968B2 (en) * | 2010-09-30 | 2014-08-06 | 株式会社日立製作所 | Multistage centrifugal compressor |
| CN102182690A (en) * | 2011-06-08 | 2011-09-14 | 扬州大学 | Composite tubular pump device |
| CN104454631B (en) * | 2014-10-30 | 2016-08-17 | 河海大学 | A kind of reversible tubular through flow pump of low lift and large flow rate with asymmetric SX type blade |
| CN107429701B (en) * | 2015-05-01 | 2019-02-01 | 株式会社石垣 | The inhalation mask that horizontal axis immersible pump and horizontal axis immersible pump use |
| DE102017119241A1 (en) | 2017-08-23 | 2019-02-28 | Voith Patent Gmbh | Pipe-axial pump |
| CN107795512A (en) * | 2017-12-12 | 2018-03-13 | 无锡市盛源汽车配件厂 | The Water-pump impeller of automobile of draining runner is installed |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS457806Y1 (en) * | 1966-01-17 | 1970-04-14 | ||
| JPH0615873B2 (en) * | 1988-12-26 | 1994-03-02 | 株式会社帝国電機製作所 | Axial thrust reduction device for axial flow pump |
| JP4074184B2 (en) * | 2002-12-11 | 2008-04-09 | 株式会社荏原製作所 | Horizontal shaft pump |
-
2007
- 2007-01-31 JP JP2007021628A patent/JP4844414B2/en not_active Expired - Fee Related
-
2008
- 2008-01-28 CN CN 200810003249 patent/CN101235824B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN101235824A (en) | 2008-08-06 |
| JP2008185015A (en) | 2008-08-14 |
| JP4844414B2 (en) | 2011-12-28 |
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Owner name: HITACHI,LTD. Free format text: FORMER OWNER: HITACHI PLANT TECHNOLOGIES LTD. Effective date: 20140306 |
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Effective date of registration: 20140306 Address after: Tokyo, Japan Patentee after: Hitachi Ltd. Address before: Tokyo, Japan, Japan Patentee before: Hitachi Plant Technologies Ltd. |
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Effective date of registration: 20200227 Address after: Tokyo, Japan Patentee after: Hitachi Industrial Machinery Co., Ltd Address before: Tokyo, Japan Patentee before: Hitachi, Ltd. |