CN206221335U - The axial force balance structure of centrifugal water pump - Google Patents
The axial force balance structure of centrifugal water pump Download PDFInfo
- Publication number
- CN206221335U CN206221335U CN201621048032.XU CN201621048032U CN206221335U CN 206221335 U CN206221335 U CN 206221335U CN 201621048032 U CN201621048032 U CN 201621048032U CN 206221335 U CN206221335 U CN 206221335U
- Authority
- CN
- China
- Prior art keywords
- pump shaft
- pump
- axial force
- hole
- force balance
- 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.)
- Active
Links
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a kind of axial force balance structure of centrifugal water pump, the axial force balance structure includes the pump housing, impeller, pump shaft and pump cover；Pump body is provided with low-pressure area, higher-pressure region and secondary nip；Wherein, secondary nip is defined by between impeller, pump shaft and pump cover；Also, pump shaft is provided with pump shaft axis hole at the axle center of impeller end, and is additionally provided with pump shaft through hole；Pump shaft through hole and pump shaft axis hole are to be in fluid communication；The opening of pump shaft through hole connects with secondary nip, and the opening of pump shaft axis hole connects with low-pressure area, so that the fluid media (medium) of secondary nip flows into low-pressure area by pump shaft through hole and pump shaft axis hole.Axial force balance structure of the present utility model can improve the hydraulic efficiency and axle pump intensity of centrifugal pump, cost-effective.
Description
Technical field
The utility model is related to mechanical field, relates more specifically to a kind of axial force balance structure of centrifugal water pump.
Background technology
In existing centrifugal pump device, after water pump pumped (conveying) medium does work through impeller, flowed back to by the balance pipe on impeller
Low-pressure area at impeller inlet, the pressure of impeller both sides is offset with this, reaches balancing axial thrust purpose.But existing structure exists following
Defect：
1st, hydraulic efficiency is influenceed.After water pump pumped (conveying) medium does work through impeller, entering for impeller is directly back to by balance pipe
Mouthful, the rotated flowing liquid at inlet channel is impacted, a fluid stream in impeller channel is caused disorder, influence the operation effect of water pump
Rate.
2nd, part quality hidden danger.Impeller intra vane is not only easily damaged when boring balance pipe at cover plate after the impeller, also to leaf
The structural strength of wheel is impacted.
3rd, part working process problem.Bore balance pipe on impeller, the burr for producing that drills be attached to impeller internal, it is necessary to
Reject in time, influence production efficiency.
Therefore the intensity of pump shaft is improved in this area in the urgent need to developing the new hydraulic efficiency that effectively improves, and is easy to processing, together
When cost-effective technology again.
Utility model content
The purpose of this utility model is exactly that the structure by balance pipe balancing axial thrust of centrifugal water pump is improved, and is taken
The measure that balance pipe is opened up on impeller is formed, using the structure for opening up on pump shaft pump shaft axis hole and pump shaft through hole, makes time nip
Fluid media (medium) the low-pressure area of centrifugal water pump import is flowed into by pump shaft through hole and pump shaft axis hole so that medium in impeller channel
It is not hit, it is ensured that centrifugal water pump operational efficiency, and ensures impeller cover structural intergrity and intensity；The intensity of pump shaft is improved,
The weight of pump shaft is decreased, material cost is saved.
The utility model provides a kind of axial force balance structure of centrifugal water pump, and the axial force balance structure includes pump
Body 1, impeller 2, pump shaft 4 and pump cover 6；
The pump body is provided with low-pressure area, higher-pressure region and secondary nip；When the centrifugal water pump works, fluid media (medium) from
Import enters low-pressure area, and after the acting boosting of impeller 2, segment fluid flow medium enters the higher-pressure region, the entrance of segment fluid flow medium
Described nip；Wherein, described secondary nip is defined by between the impeller 2, the pump shaft 4 and the pump cover 6；
Also, the pump shaft 4 is provided with pump shaft axis hole 3 at the axle center of impeller end, and is additionally provided with pump shaft through hole 7；It is described
Pump shaft through hole 7 and the pump shaft axis hole 3 are to be in fluid communication；The opening of the pump shaft through hole 7 connects with described nip, and institute
The opening for stating pump shaft axis hole 3 connects with the low-pressure area, so that the described fluid media (medium) of nip passes through the He of pump shaft through hole 7
Pump shaft axis hole 3 flows into described low-pressure area.
The axial force balance structure of the centrifugal water pump is additionally provided with the mechanical sealing member 5 for sealing pump shaft 4.
The quantity of the pump shaft through hole 7 is 1-4.
In another preference, the quantity of the pump shaft through hole 7 is 2, and the pump shaft through hole 7 crosses axle center, and symmetrical point
Cloth.
The gross area of the pump shaft through hole 7 is ∑ St, the area of the pump shaft axis hole 3 is S0, the ratio between the two ∑ St/S0For
0.7-1.5, preferably 0.8-1.2, more preferably 0.9-1.1.
When necessary electromotor power is 11kW~160kW, the diameter D of the pump shaft 4 is 35mm~70mm.
When necessary electromotor power is 11kW~160kW, the hollow parts diameter d of the pump shaft 4 is 12mm~30mm.
The ratio d/D of the diameter of axle D of the hollow parts diameter d and the pump shaft 4 be 0.05~0.75, preferably 0.2~
0.6, more preferably 0.3~0.5.
In another embodiment, the impeller 2 opens up balance pipe.
The axial force balance structure of the centrifugal water pump is applied to multi-stage centrifugal pump, preferably suitable for one-stage centrifugal water
Pump, more preferably suitable for one step single sucking formula centrifugal water pump.
It should be understood that in the range of the utility model, above-mentioned each technical characteristic of the present utility model and below (as implemented
Example) in specifically describe each technical characteristic between can be combined with each other, so as to constitute new or preferred technical scheme.It is limited to
Length, no longer tires out state herein one by one.
Brief description of the drawings
In order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art, below will be to embodiment
Or the accompanying drawing to be used needed for description of the prior art does and simply introduces, it should be apparent that, drawings in the following description are only
It is some embodiments of the present utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the vertical section structural map of the axial force balance structure in one example of the utility model；
Fig. 2 is the axial force balance structure vertical section structural map of one comparative example of example of the utility model；
Fig. 3 is parameter control curve of the present utility model.
In each accompanying drawing, each sign is as follows：
0- imports；
The 1- pump housings；
2- impellers；
3- pump shaft axis holes；
4- pump shafts；
5- mechanical sealing members；
6- pump covers；
7- pump shaft through holes；
13- balance pipes；
A- higher-pressure regions；
B- nip；
C- low-pressure areas.
Specific embodiment
The present inventor, by a large amount of screenings, develops a kind of axle of centrifugal water pump first by in-depth study extensively
To dynamic balance structure.The axial force balance structure of the centrifugal water pump improves the operational efficiency of centrifugal water pump, and ensure that impeller
The integrality of covering plate structure, while improving the intensity of pump shaft, decreases the weight of pump shaft, saves material cost.It is basic herein
On complete the utility model.
Term
As used herein, term " hydraulic efficiency " refers to the liquid power and the liquid without hydraulic loss for removing hydraulic loss
Body power ratio.
The axial force balance structure of centrifugal water pump
The utility model provide a kind of axial force balance structure of centrifugal water pump, it be it is a kind of with ad hoc structure from
The axial force balance structure of edema with the heart involved pump.
Typically, compared with the axial force balance structure of original centrifugal water pump, the utility model is by the pump shaft of centrifugal water pump
Being provided with pump shaft axis hole at the axle center of impeller end, and pump shaft through hole is opened up in the radial direction in pump shaft.The pump shaft
Through hole crosses axle center, and symmetrical, and the pump shaft through hole is in fluid communication with the pump shaft axis hole, and the pump shaft through hole is located at described
The one end of pump shaft axis hole away from impeller farther out, the opening of pump shaft through hole connects with the secondary nip of centrifugal water pump, the pump shaft through hole
Opening is located at the secondary nip and pump shaft contact-segment of centrifugal water pump, and near one end of impeller.The opening of pump shaft axis hole and low-pressure area
Connection, the working media of centrifugal water pump flows into low-pressure area from secondary nip by above-mentioned pump shaft axis hole and pump shaft through hole, such to set
Meter is not impacted to liquid stream at vane inlet substantially, it is ensured that the operational efficiency of water pump.
In another preference, the axial force balance structure of the centrifugal water pump eliminates former axial force balance structure impeller
On open up the design of balance pipe, it is to avoid impeller intra vane is damaged, while increased the structural strength of impeller, if being bored on impeller flat
Weighing apparatus hole, the burr for producing that drills is attached to impeller internal, influence production efficiency, it is necessary to reject burr in time, answers production technology
Hydridization simultaneously increased production cost.
In another preference, centrifugal water pump can retain the design that balance pipe is opened up on impeller, aid in of the present utility model
Pump shaft axis hole and pump shaft through hole balancing axial thrust.
In another preference, centrifugal water pump can retain the design that balance pipe is opened up on impeller, but compared to former centrifugal water pump
Balance pipe improve to some extent, the aperture of existing balance pipe can be relatively smaller, and the position of balance pipe can more press close to leaf
Wheel center, reduces the influence to liquid stream at import.
In the utility model, it is not particularly limited for pump shaft material, pump shaft size and pump power etc..
For material, can be using the conventional pump shaft material in this area, such as stainless steel, alloy material etc..
For the size of pump shaft, the representational a diameter of 5~200mm of pump shaft, preferably 10~150mm, more preferably 20
~100mm.
For the length of pump shaft, representational pump shaft length is 50~3000mm, preferably 90~2500mm, more preferably
150~2000mm.
For pump power, representational pump power is 1~500kW, preferably 5~250kW, more preferably 10~200kW.
Generally, those skilled in the art can determine as needed suitable pump power, pump shaft material, pump shaft diameter,
The parameters such as pump shaft length.
In the utility model, pump shaft axis hole and pump shaft through hole can be formed with conventional method.A kind of method is to be initially formed
Solid pump shaft, then processing forms above-mentioned pump shaft axis hole and pump shaft through hole.Another way is by directly molding or direct
Casting, forms the pump shaft with the pump shaft axis hole and pump shaft through hole.
In another preference, the axial force balance structure of the centrifugal water pump is applied to multi-stage centrifugal pump (such as：Two
Level, three-level centrifugal water pump).When multi-stage centrifugal pump, axial force balance structure of the present utility model be applied near from
The transformation of impeller and axle at edema with the heart involved pump intake, other impellers and shaft part keep original structure constant.
In another preference, the axial force balance structure of the centrifugal water pump is applied to single stage single suction volute pump, single-stage
Double suction centrifugal pump, centrifugal multistage pump multiple centrifugal pump, self-priming centrifugal pump, motor pump and Diesel engine pump etc..
It is not particularly limited suitable for water pump of the present utility model, representational example includes (but being not limited to)：Conveying
It is pump, circulating pump, fire pump, dredge pump, measuring pump, infusion pump, defoaming pump, process pump, oil transfer pump, feed pump, draining pump, hydrophobic
Pump etc..
Additionally, water pump of the present utility model is applicable to a variety of media, wherein representational water pump is included (but simultaneously
It is not limited to)：Clarified water pump, sewage pump, sea water pump, heat-exchanger pump, hot oil pump.
In another embodiment, the sprayable macromolecule of each component surface of the axial force balance structure of the centrifugal water pump is answered
Condensation material, makes its surface form hydraulically smooth surface, reduces the layering of fluid in pump, so as to reduce pump internal turbulence, reduces
Pump internal loss, so as to reduce power consumption, improves the hydraulic efficiency of water pump.Additionally, the compactness of figure layer molecular structure, can completely cut off sky
The contact of the media such as gas and water and water pump vane mother metal, at utmost reduces electrochemical corrosion and corrosion.
The computational methods of the centrifugal water pump pump shaft intensity：
The maximum shear stress that the pump shaft of centrifugal water pump can bear, should in the pump shaft material range of stress allowed to bear,
That is the torsional strength condition of pump shaft is：
τmax=T/W≤[τ] is 1.
In formula：τmaxThe maximum shear stress of-pump shaft；
[τ]-pump shaft material allowable stress；
The moment of torsion of T- pump shafts transmission；
W- Torsion Section coefficients.
Wherein, when the pump shaft of centrifugal water pump is solid, its Torsion Section coefficient Ws：
Ws=π D3/16 ②
In formula：The solid pump shaft diameters of D-；
When the pump shaft of centrifugal water pump is hollow, its Torsion Section coefficient Wk：
Wk=π D1 3[1-(d/D1)4]/16 ③
In formula：D1- hollow pump shaft diameter；
The hollow parts diameter of d- pump shafts.
It is consistent in pump shaft torque T, when the stress being subject to is identical, study the chi between the solid shafting and hollow shaft of same intensity
Very little relation：According to formula 2. and 3., W is mades=Wk, in the case of drawing same intensity, hollow pump shaft and solid pump shaft size relationship, such as
Shown in Fig. 3.In Fig. 3, abscissa represents D1The diameter ratio of/D, i.e., hollow pump shaft and solid pump shaft, it is corresponding after determining ratio
D/D ordinate values be ensure same intensity under, pump shaft hollow parts relative to solid shafting ratio, corresponding mIt is empty/mIt is realIt is i.e. hollow
The weight ratio of pump shaft and solid pump shaft.
For example：By taking common solid shaft diameter 40mm as an example, in the case where intensity is consistent, using hollow shaft structure
When, it is considered to the factor such as physical dimension, take hollow shaft diameter 42mm, i.e. D1/ D=42/40=1.05, be by Fig. 3, i.e. abscissa
1.05, correspondence d/D value are 0.6375, i.e. hollow shaft hollow parts diameter d=0.6375*40=25.5mm, according to above-mentioned value,
It is 0.697, m in corresponding diagram 3 to calculate the mass ratio of solid shafting and hollow shaft portionIt is empty/mIt is realY value.
Major advantage of the present utility model includes：
A () improves the hydraulic efficiency of centrifugal water pump.
B () improves the intensity of centrifugal water pump pump shaft, reduce its weight.
C () saves raw material, reduces cost.
D () component processing is convenient, time saving and energy saving.
E () extends centrifugal water pump service life.
Therefore, the utility model can effectively solve the equilibrium problem of centrifugal water pump axial force, improve water pump efficiency, carry
The intensity of pump shaft high, decreases the weight of pump shaft, saves material cost.
With reference to specific embodiment, the utility model is expanded on further.It should be understood that these embodiments are merely to illustrate this
Utility model rather than limitation scope of the present utility model.Additionally, accompanying drawing is schematic diagram, therefore the utility model device and set
Standby is not limited by the size or ratio of the schematic diagram.
Embodiment 1：
As shown in figure 1, the axial force balance structure of the centrifugal water pump is applied to one step single sucking formula centrifugal water pump, specifically
Ground, including the pump housing 1, impeller 2, pump shaft 4, mechanical sealing member 5, pump cover 6.The pump shaft 4 is provided with pump shaft at the axle center of impeller end
Axis hole 3, and it is additionally provided with pump shaft through hole 7；The pump shaft through hole 7 and the pump shaft axis hole 3 are to be in fluid communication；The present embodiment
In, the quantity of pump shaft through hole 7 is 2, two axle center arranged and cross pump shaft 4 symmetrical above and below of pump shaft through hole 7；Two pump shaft through holes
7 gross area is ∑ St, the area of the pump shaft axis hole 3 is S0, the ratio between the two ∑ St/S0Be 1, i.e., upper and lower two pump shaft through holes 7
Area sum is the area of pump shaft axis hole 3, fully effectively using pump shaft through hole 7 and the circulation area of pump shaft axis hole 3；Pump shaft 4
Diameter D is 43mm, and the hollow parts diameter d of pump shaft 4 is 18mm, the ratio of the diameter of axle D of hollow parts diameter d and the pump shaft 4
D/D is 0.419.Mechanical sealing member 5 realizes the axial face seal to pump shaft 4, prevents leaking for medium.
The pump body is additionally provided with C low-pressure areas, A higher-pressure regions and B nip；When the centrifugal water pump works, fluid
Medium enters C low-pressure areas from import, and after being boosted through the acting of impeller 2, segment fluid flow medium enters the A higher-pressure regions, segment fluid flow
Medium enters the B nip；Wherein, described B times nip by the impeller 2, the pump shaft 4 and the pump cover 6 boundary
It is fixed；The opening of the pump shaft through hole 7 connects with the B nip, and the opening of the pump shaft axis hole 3 connects with the C low-pressure areas
It is logical, so that the fluid media (medium) of the B nip flows into described C low-pressure areas by pump shaft through hole 7 and pump shaft axis hole 3.
During operation, centrifugal water pump pumped (conveying) medium is drawn into impeller 2 with low-pressure state from the low-pressure area C of import 0, is passed through
The acting of impeller 2, is exported from impeller 2 with high pressure conditions and sent out, and partly into A higher-pressure regions, the fluid media (medium) of A higher-pressure regions passes through
Gap between impeller 2 and pump cover 6 coordinates, and produces pressure differential so that reaching the B fluid media (medium) of nip turns into time means of press seals Jie
Matter.The B fluid media (medium) of nip enters pump shaft axis hole 3 by pump shaft through hole 7, is back to C after collecting through pump shaft axis hole 3 again low
Nip, the pressure for realizing the both sides of impeller 2 is cancelled out each other, and reaches balancing axial thrust purpose.
Comparative example 1：
As shown in Fig. 2 existing one step single sucking formula centrifugal water pump, including the pump housing 1, impeller 2, balance pipe 13, pump shaft 4, machine
Tool seal 5, pump cover 6.Centrifugal water pump trandfer fluid medium is with low-pressure state, the C low-pressure areas intake impeller 2 from import 0, warp
The acting of impeller 2 is crossed, is exported from impeller 2 with high pressure conditions and sent out, form A areas higher-pressure region, the fluid media (medium) of A higher-pressure regions is by leaf
Gap between wheel 2 and pump cover 6 coordinates, and produces pressure differential so that reaching the B medium of nip turns into time pressure fluid media (medium).
Balance pipe 13 is opened up on impeller 2, the B fluid media (medium) of nip flows into C low-pressure areas at the import of impeller 2 by balance pipe 13, realizes
The pressure of impeller 2 both sides is cancelled out each other, and reaches balancing axial thrust purpose.Mechanical sealing member 5 is realized close to the axial plane of pump shaft 14
Envelope, prevents leaking for medium.
Embodiment 2：
Centrifugal water pump pump shaft is for traditional solid pump shaft and pump shaft diameter D is 40mm before transformation, it 2. can be calculated according to formula and is resisted
Turn round section factor WsIt is 12566mm3。
After transformation, the Each part of centrifugal water pump is with embodiment 1, hollow pump shaft diameter and former solid pump in the present embodiment
The diameter ratio D of axle1During/D=1.05, then its hollow pump shaft diameter D1It is 42mm, the hollow parts of pump shaft can be checked according to Fig. 3
Diameter d is 25.5mm, it is considered to manufacturability, value d=25mm, and its Torsion Section coefficient W 3. can be calculated according to formulakIt is 12721mm3。
Hollow parts axoplasm amount and solid section mass values mIt is empty/mIt is realIt is 0.711.
Therefore, it can be seen that when centrifugal water pump pump shaft is hollow pump shaft, its Torsion Section coefficient W is relative to solid pump shaft
It is bigger, illustrate that hollow pump shaft torsional property is better than solid pump shaft, and hollow pump shaft weight of the quality again smaller than solid pump shaft.
Embodiment 3：
Centrifugal water pump pump shaft is for traditional solid pump shaft and pump shaft diameter D is 40mm before transformation, it 2. can be calculated according to formula and is resisted
Turn round section factor WsIt is 12566mm3。
After transformation, the Each part of centrifugal water pump is with embodiment 1, hollow pump shaft diameter and former solid pump in the present embodiment
Axle mass ratio D1During/D=1.05, then its hollow pump shaft diameter D1It is 42mm, can be checked according to Fig. 3, the hollow parts of pump shaft is straight
Footpath d is 25.5mm, it is considered to manufacturability, value d=20mm, and its Torsion Section coefficient W 3. can be calculated according to formulakIt is 13800mm3.It is empty
Center portion split axle quality and solid section mass values mIt is empty/mIt is realIt is 0.8525.
Therefore, it can be seen that when centrifugal water pump pump shaft is hollow pump shaft, its Torsion Section coefficient W is relative to solid pump shaft
It is bigger, illustrate that hollow pump shaft torsional property is better than solid pump shaft, and hollow pump shaft weight of the quality again smaller than solid pump shaft.
Embodiment 4：
Centrifugal water pump pump shaft is for traditional solid pump shaft and pump shaft diameter D is 100mm before transformation, it 2. can be calculated according to formula and is resisted
Turn round section factor WsIt is 196350mm3。
After transformation, in the present embodiment the Each part of centrifugal water pump with embodiment 1, when hollow pump axoplasm amount and original are solid
Pump shaft pump shaft mass ratio mIt is empty/mIt is realWhen=0.8, correspondence m can be drawn according to Fig. 3It is empty/mIt is realAbscissa numerical value 1.018, now d/D
Corresponding Y value is 0.4855, its hollow pump shaft diameter D1It is 101.8mm, the hollow parts diameter d of pump shaft is
3. 48.55mm, its Torsion Section coefficient W can be calculated according to formulakIt is 196430mm3.Intensity and solid shafting are basically identical.
Therefore, it can be seen that when centrifugal water pump pump shaft is hollow pump shaft, when keeping torsional property constant, hollow pump shaft
Weight of the quality again smaller than solid pump shaft.
By the various embodiments described above and comparative example, it can be seen that the axial force balance structure of existing centrifugal water pump exists following
Defect：
1st, hydraulic efficiency is influenceed.The B fluid media (medium) of nip is directly back to the import of impeller by balance pipe, to import
Rotated flowing liquid at runner is impacted, and a fluid stream in impeller channel is caused disorder, influences the operational efficiency of water pump.
2nd, part quality hidden danger.Impeller intra vane is not only easily damaged when boring balance pipe at cover plate after the impeller, also to leaf
The structural strength of wheel is impacted
3rd, part working process problem.Bore balance pipe on impeller, the burr for producing that drills be attached to impeller internal, it is necessary to
Reject in time, influence production efficiency.
Each embodiment of the utility model is compared with comparative example, and counterbalance effect is basically identical, but the utility model also can reach it is following
Effect and advantage：
1st, hydraulic efficiency is improved.B times the fluid media (medium) of nip is directly back to the import of impeller by pump shaft axis hole, then flows
Enter impeller inlet, liquid stream at vane inlet is not impacted substantially, it is ensured that the operational efficiency of water pump.
2nd, pump shaft intensity is improved.By rigorous calculating and experiment, the hollow Pump Axle intensity with appropriate axis hole
It is all higher than solid pump shaft.
3rd, economy.Using pump shaft, the weight of axle is reduced, it is cost-effective.
The all documents referred in the utility model are all incorporated as reference in this application, just as each document quilt
It is individually recited as with reference to such.In addition, it is to be understood that after above-mentioned instruction content of the present utility model has been read, this area skill
Art personnel can make various changes or modifications to the utility model, and these equivalent form of values equally fall within the application appended claims
Book limited range.
Claims (10)
1. a kind of axial force balance structure of centrifugal water pump, it is characterised in that the axial force balance structure include the pump housing (1),
Impeller (2), pump shaft (4) and pump cover (6)；
The pump body is provided with low-pressure area, higher-pressure region and secondary nip；Wherein, described secondary nip is by the impeller (2), described
Defined between pump shaft (4) and the pump cover (6)；
Also, the pump shaft (4) is provided with pump shaft axis hole (3) at the axle center of impeller end, and is additionally provided with pump shaft through hole (7)；Institute
It is to be in fluid communication to state pump shaft through hole (7) and the pump shaft axis hole (3)；The opening of the pump shaft through hole (7) and described nip
Connection, and the opening of the pump shaft axis hole (3) connects with the low-pressure area, so that the fluid media (medium) of described nip passes through
Pump shaft through hole (7) and pump shaft axis hole (3) flow into described low-pressure area.
2. axial force balance structure as claimed in claim 1, it is characterised in that the axial force balance structure of the centrifugal water pump
It is additionally provided with the mechanical sealing member (5) for sealing pump shaft (4).
3. axial force balance structure as claimed in claim 1, it is characterised in that the quantity of the pump shaft through hole (7) is 1-4
It is individual.
4. axial force balance structure as claimed in claim 3, it is characterised in that the quantity of the pump shaft through hole (7) is 2,
The pump shaft through hole (7) crosses axle center, and symmetrical.
5. axial force balance structure as claimed in claim 1, it is characterised in that the gross area of the pump shaft through hole (7) is ∑
St, the area of the pump shaft axis hole (3) is S0, the ratio between the two ∑ St/S0It is 0.7-1.5.
6. axial force balance structure as claimed in claim 1, it is characterised in that when necessary electromotor power is 11kW~160kW
When, the diameter D of the pump shaft (4) is 35mm~70mm.
7. axial force balance structure as claimed in claim 1, it is characterised in that when necessary electromotor power is 11kW~160kW
When, the hollow parts diameter d of the pump shaft (4) is 12mm~30mm.
8. the axial force balance structure as described in claim 6 and 7 is any, it is characterised in that the hollow parts of the pump shaft (4)
The ratio d/D of the diameter D of diameter d and the pump shaft (4) is 0.05~0.75.
9. axial force balance structure as claimed in claim 1, it is characterised in that the impeller (2) opens up balance pipe.
10. axial force balance structure as claimed in claim 1, it is characterised in that the axial force balance knot of the centrifugal water pump
Structure is applied to multi-stage centrifugal pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621048032.XU CN206221335U (en) | 2016-09-09 | 2016-09-09 | The axial force balance structure of centrifugal water pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621048032.XU CN206221335U (en) | 2016-09-09 | 2016-09-09 | The axial force balance structure of centrifugal water pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206221335U true CN206221335U (en) | 2017-06-06 |
Family
ID=58783120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621048032.XU Active CN206221335U (en) | 2016-09-09 | 2016-09-09 | The axial force balance structure of centrifugal water pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206221335U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107806439A (en) * | 2016-09-09 | 2018-03-16 | 上海连成（集团）有限公司 | The axial force balance structure of centrifugal water pump |
| CN112524085A (en) * | 2020-11-26 | 2021-03-19 | 江苏大学 | Internal circulation type centrifugal pump axial force balance structure with multiple back mouth rings |
-
2016
- 2016-09-09 CN CN201621048032.XU patent/CN206221335U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107806439A (en) * | 2016-09-09 | 2018-03-16 | 上海连成（集团）有限公司 | The axial force balance structure of centrifugal water pump |
| CN107806439B (en) * | 2016-09-09 | 2024-02-23 | 上海连成（集团）有限公司 | Axial force balancing structure of centrifugal water pump |
| CN112524085A (en) * | 2020-11-26 | 2021-03-19 | 江苏大学 | Internal circulation type centrifugal pump axial force balance structure with multiple back mouth rings |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107806439A (en) | The axial force balance structure of centrifugal water pump | |
| CN204610304U (en) | A kind of handy type through-flow pump | |
| CN206221335U (en) | The axial force balance structure of centrifugal water pump | |
| CN109209602B (en) | CFD-based diesel engine cooling water pump optimization method | |
| CN201535254U (en) | Peripheral canned pump | |
| CN108412778A (en) | A kind of motor preposition formula submersed three-flow pump | |
| CN107893782A (en) | A kind of water pump cooling structure | |
| CN105736116B (en) | A kind of intelligent controllable water pump of anti-cavitation | |
| CN108131327A (en) | A kind of design method of the centrifugal pump based on solid-liquid two-phase flow | |
| CN207795588U (en) | A kind of centrifugal deep well pump | |
| Gülich et al. | Pump types and performance data | |
| CN205533265U (en) | Centrifugal pump is supported at second grade or tertiary radial subdivision both ends | |
| CN206468585U (en) | Vertical core pulling draining pump and its baffle structure | |
| CN206352595U (en) | A kind of heavily loaded LNG low temperature immersed pump | |
| CN104251215B (en) | Asynchronous transmission multistage centrifugal pump | |
| CN103835987A (en) | Low-temperature deep-well pump | |
| CN208917917U (en) | Integrated Axial Flow Pump Station | |
| CN203488427U (en) | Three-level convection type impeller of convection type water pump | |
| CN208500196U (en) | A kind of hoisting speed reducer with long service life | |
| CN205578102U (en) | Controllable water pump of anti -cavitation intelligence | |
| CN216714794U (en) | Flow passage type sealing ring structure for supporting pump | |
| CN105603668B (en) | A kind of overflow dyeing machine dynamical system having from function of increasing pressure | |
| CN206111570U (en) | Double feed inlet horizontal split -case centrifugal pump | |
| CN110043471A (en) | Vertical sectional type long-shaft pump | |
| CN210068568U (en) | Water inlet structure based on application of high-efficiency single-stage double-suction horizontal split pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |