CN206874490U - Axial subdivision three-level centrifugal pump - Google Patents
Axial subdivision three-level centrifugal pump Download PDFInfo
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- CN206874490U CN206874490U CN201720486364.4U CN201720486364U CN206874490U CN 206874490 U CN206874490 U CN 206874490U CN 201720486364 U CN201720486364 U CN 201720486364U CN 206874490 U CN206874490 U CN 206874490U
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- impeller
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Abstract
Axial subdivision three-level centrifugal pump belongs to centrifugation pump technical field, more particularly to a kind of axial subdivision three-level centrifugal pump.The utility model provides the axial subdivision three-level centrifugal pump that a kind of cavitation performance is good, reliability is high.The utility model includes axle (1), first order impeller (6), second level impeller (9) and third level impeller (11) are provided with axle (1), its structural feature first order impeller (6) is double-entry impeller；Second level impeller (9) and third level impeller (11) are single-suction (single-in let) impeller, and differential concatenation is installed.
Description
Technical field
The utility model belongs to centrifugation pump technical field, more particularly to a kind of axial subdivision three-level centrifugal pump.
Background technology
Centrifugal pump refers to convey the pump of liquid by centrifugal force caused by impeller rotation.Centrifugal pump application is very extensive, but
Existing centrifugal pump is there is also some problems, for example, the cavitation performance of pump, reliability have much room for improvement, and leakage loss is more etc..
The content of the invention
The utility model is aiming above mentioned problem, there is provided the axial subdivision three-level that a kind of cavitation performance is good, reliability is high
Centrifugal pump.
To achieve the above object, the utility model adopts the following technical scheme that, the utility model includes axle (1), on axle (1)
First order impeller (6), second level impeller (9) and third level impeller (11) are provided with, its structural feature first order impeller (6) is double
Phyllidium wheel；Second level impeller (9) and third level impeller (11) are single-suction (single-in let) impeller, and differential concatenation is installed；
The discharge volute casing (5) of first order double-entry impeller (6) sucks snail by big excessively stream runner (7) and second level impeller (9)
Room is connected, and the discharge volute casing (8) of second level impeller (9) is connected by sucking volute casing with three-level impeller short across stream runner (12)；
The discharge volute casing of first order impeller (6), second level impeller (9) and third level impeller (11) is two and is mutually staggered
180 ° of symmetrical volute casings；
It is provided with axle sleeve (23) between first order level on axle (1) between first order impeller (6) and second level impeller (9),
Between one-level level first order internal liner (22) is provided with the outside of axle sleeve (23)；Second level impeller (9) and third level impeller (11) it
Between axle (1) on be provided with middle axle sleeve (21), be provided with interstage bushing (20) on the outside of middle axle sleeve (21)；Third level impeller
(11) pressure release axle sleeve (18) is provided with the axle (1) of rear end, pressure release bushing (17) is provided with the outside of pressure release axle sleeve (18).
As a kind of preferred scheme, first order impeller (6), second level impeller (9) and third level leaf described in the utility model
Take turns (11) to position by independent snap ring (19), be interference fitted with axle (1).
As another preferred scheme, first order impeller (6) endoporus aperture described in the utility model is less than second level impeller
(6) endoporus aperture 0.125mm, second level impeller (6) endoporus aperture are less than third level impeller (6) endoporus aperture 0.125mm.
Secondly, pressure release bushing (17) front end described in the utility model is provided with corresponding to three-level impeller suction volute casing suction inlet
The stabilier (14) extended forwards.
In addition, suction volute casing (4) front end axle (1) outer side seal chamber described in the utility model and pressure release axle sleeve (18) rear end
Axle (1) outer side seal chamber is connected by balancing pipeline (24).
The utility model beneficial effect.
The utility model pump first order impeller is double-entry impeller, can improve the cavitation performance of pump.
The first order impeller (6) of the utility model pump does not produce axial force, second level impeller (9) and third level impeller (11)
It is arranged symmetrically, its axial force substantially can be with Equilibrium.Residual axial force is smaller, only needs less bearing to bear.No
Balanced controls are needed, improve the reliability of equipment.
Every grade of impeller outlet of the utility model has two symmetrical volute casings, for double volute-chamber structures, is mutually staggered 180 °.Its
Double volute casings respectively have a runner after coming out, and are dual channel, and angle is arranged symmetrically, and balance radial load.
Medium flows into the first order suction volute casing (4) of pump, after first order impeller (6) acting, flows into chopped-off head discharge volute casing
(5) second level impeller (9), is flowed into through big excessively stream runner (7), after second level impeller (9) acting, flows into second level discharge snail
Room (8), through flowing into third level impeller (11) short across stream runner (12), after third level impeller (11) acting, flow into the third level and tell
Go out volute casing (10), flow out the pump housing (15) afterwards, enter in pipeline.
Axle sleeve (23) and first order internal liner (22), which serve, between the utility model first order level dams, and can reduce first
The leakage loss caused by lift difference between level impeller and second level impeller.Middle axle sleeve (21) and interstage bushing (20), which rise, to be cut
Stream acts on, and can reduce the leakage loss caused by lift difference between second level impeller and third level impeller.
Brief description of the drawings
The utility model is described further with reference to the accompanying drawings and detailed description.Scope of protection of the utility model
It is not only limited to the statement of herein below.
Fig. 1 is the utility model structure diagram.
Fig. 2 is the utility model performance chart.
In figure, 1 it is axle, 2 is parts of bearings A, 3 is mechanical sealing parts, 4 is suction volute casing, 5 is first order discharge snail
Room, 6 be first order impeller, 7 be big excessively stream runner, 8 be second level discharge volute casing, 9 be second level impeller, 10 be third level discharge
Volute casing, 11 be third level impeller, 12 be short across stream runner, 13 be pump cover, 14 be stabilier, 15 be the pump housing, 16 be parts of bearings
B, 17 it is pressure release bushing, 18 be pressure release axle sleeve, 19 be snap ring, 20 be interstage bushing, 21 be middle axle sleeve, 22 is between first order level
Bushing, 23 be axle sleeve between first order level, 24 be balance pipe, 25 be annular seal space.
Embodiment
As illustrated, the utility model includes axle (1), first order impeller (6), second level impeller (9) are provided with axle (1)
With third level impeller (11), first order impeller (6) is double-entry impeller；Second level impeller (9) and third level impeller (11) are single suction
Impeller, differential concatenation installation；
The discharge volute casing (5) of first order double-entry impeller (6) sucks snail by big excessively stream runner (7) and second level impeller (9)
Room is connected, and the discharge volute casing (8) of second level impeller (9) is connected by sucking volute casing with three-level impeller short across stream runner (12)；
The discharge volute casing of first order impeller (6), second level impeller (9) and third level impeller (11) is two and is mutually staggered
180 ° of symmetrical volute casings；
It is provided with axle sleeve (23) between first order level on axle (1) between first order impeller (6) and second level impeller (9),
Between one-level level first order internal liner (22) is provided with the outside of axle sleeve (23)；Second level impeller (9) and third level impeller (11) it
Between axle (1) on be provided with middle axle sleeve (21), be provided with interstage bushing (20) on the outside of middle axle sleeve (21)；Third level impeller
(11) pressure release axle sleeve (18) is provided with the axle (1) of rear end, pressure release bushing (17) is provided with the outside of pressure release axle sleeve (18).
The first order impeller (6), second level impeller (9) and third level impeller (11) are fixed by independent snap ring (19)
Position, it is interference fitted with axle (1).
First order impeller (6) the endoporus aperture is less than second level impeller (6) endoporus aperture 0.125mm, second level impeller
(6) endoporus aperture is less than third level impeller (6) endoporus aperture 0.125mm.Impeller endoporus is gradually reduced 0.125mm, is easy to assemble.
Pressure release bushing (17) front end corresponding to three-level impeller suction volute casing suction inlet be provided with extend forwards it is steady
Flowing plate (14).The medium that stabilier (14) on pressure release bushing (17) can prevent from flowing through to come from (12) produces shock and mixed flow, makes
Medium stably flows into the suction inlet of third level impeller (11), reduces hydraulic loss.
Suction volute casing (4) front end axle (1) outer side seal chamber and pressure release axle sleeve (18) rear axle (1) outer side seal chamber
Connected by balancing pipeline (24).Annular seal space (25) operating pressure of pump both sides can be made identical for balance pipeline (24) and balance shaft
Xiang Li.
The Hydraulic Design of the utility model first order impeller (6), suction volute casing (4) and discharge volute casing (5) can use pump-type
Number it isThe hydraulic model of (existing product of centrifugal pump industry).PumpPerformance is
Flow Q=186m3/ h, lift H=76m, efficiency eta=73%, rotating speed n=2980r/min.
The water of the utility model second level impeller (9) and discharge volute casing (8), third level impeller (11) and discharge volute casing (10)
Power design can use Similar method.From modelTwo-stage (two-speed) pump for model pump (centrifugal pump industry
Existing product), the model pump performance is flow Q=100m3/ h, single-stage lift H=103m, efficiency eta=68%, rotating speed n=
2980r/min.Second level impeller after the hydraulic model of model pump is amplified into 1.2 times, can be completed according to the similarity law of vane pump
(9) and discharge volute casing (8), third level impeller (11) and discharge volute casing (10) the Hydraulic Design.
The utility model can meet following working condition requirement：
Flow Q=200m3/ h, lift H=523m, NPSHr=8m, efficiency eta=69%, rotating speed n=3550r/min.Mesh
The preceding country does not meet the BB3 type pumps for meeting API610 standards of above-mentioned performance requirement.Pump performance refers to performance chart.
It is understood that above with respect to specific descriptions of the present utility model, it is merely to illustrate the utility model and is not
The technical scheme described by the utility model embodiment is limited to, it will be understood by those within the art that, still can be with
The utility model is modified or equivalent substitution, to reach identical technique effect；As long as satisfaction uses needs, all in this reality
Within new protection domain.
Claims (5)
1. axial subdivision three-level centrifugal pump, including axle, first order impeller is provided with axle（6）, second level impeller（9）And the third level
Impeller（11）, it is characterised in that first order impeller（6）For double-entry impeller；Second level impeller（9）With third level impeller（11）For list
Phyllidium wheel, differential concatenation installation；
First order double-entry impeller（6）Discharge volute casing（5）Pass through big excessively stream runner（7）With second level impeller（9）Suck volute casing phase
Even, second level impeller（9）Discharge volute casing（8）By short across stream runner（12）It is connected with three-level impeller suction volute casing；
First order impeller（6）, second level impeller（9）With third level impeller（11）Discharge volute casing be two and be mutually staggered 180 °
Symmetrical volute casing；
First order impeller（6）With second level impeller（9）Between axle on be provided with axle sleeve between first order level（23）, between first order level
Axle sleeve（23）Outside is provided with first order internal liner（22）；Second level impeller（9）With third level impeller（11）Between axle on
It is provided with middle axle sleeve（21）, middle axle sleeve（21）Outside is provided with interstage bushing（20）；Third level impeller（11）The axle of rear end
On be provided with pressure release axle sleeve（18）, pressure release axle sleeve（18）Outside is provided with pressure release bushing（17）.
2. axial subdivision three-level centrifugal pump according to claim 1, it is characterised in that the first order impeller（6）, the second level
Impeller（9）With third level impeller（11）Pass through independent snap ring（19）Positioning, it is interference fitted with axle.
3. axial subdivision three-level centrifugal pump according to claim 1, it is characterised in that the first order impeller endoporus aperture is small
In second level impeller endoporus aperture 0.125mm, second level impeller endoporus aperture is less than third level impeller endoporus aperture 0.125mm.
4. axial subdivision three-level centrifugal pump according to claim 1, it is characterised in that the pressure release bushing（17）Front end is corresponding
The stabilier extended forwards is provided with three-level impeller suction volute casing suction inlet（14）.
5. axial subdivision three-level centrifugal pump according to claim 1, it is characterised in that the suction volute casing（4）On the outside of the axle of front end
Annular seal space and pressure release axle sleeve（18）Rear axle outer side seal chamber is by balancing pipeline（24）Connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720486364.4U CN206874490U (en) | 2017-05-04 | 2017-05-04 | Axial subdivision three-level centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720486364.4U CN206874490U (en) | 2017-05-04 | 2017-05-04 | Axial subdivision three-level centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206874490U true CN206874490U (en) | 2018-01-12 |
Family
ID=61339428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720486364.4U Active CN206874490U (en) | 2017-05-04 | 2017-05-04 | Axial subdivision three-level centrifugal pump |
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| Country | Link |
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| CN (1) | CN206874490U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109630423A (en) * | 2019-02-12 | 2019-04-16 | 孙国伟 | Pumping plant |
| CN109989922A (en) * | 2019-04-28 | 2019-07-09 | 浙江威龙泵业有限公司 | Combined type self-priming centrifugal pump |
-
2017
- 2017-05-04 CN CN201720486364.4U patent/CN206874490U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109630423A (en) * | 2019-02-12 | 2019-04-16 | 孙国伟 | Pumping plant |
| CN109989922A (en) * | 2019-04-28 | 2019-07-09 | 浙江威龙泵业有限公司 | Combined type self-priming centrifugal pump |
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