CN207064253U - A kind of pump assembly of two-stage centrifugal pump - Google Patents
A kind of pump assembly of two-stage centrifugal pump Download PDFInfo
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- CN207064253U CN207064253U CN201720566483.0U CN201720566483U CN207064253U CN 207064253 U CN207064253 U CN 207064253U CN 201720566483 U CN201720566483 U CN 201720566483U CN 207064253 U CN207064253 U CN 207064253U
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- pump
- impeller
- stage impeller
- guide vane
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Abstract
The utility model provides a kind of pump assembly of two-stage centrifugal pump, belongs to water pump technology.It solves the problems, such as that existing pump assembly lift is shorter and less efficient.A kind of this pump assembly of two-stage centrifugal pump, including the pump housing, the pump housing includes pump chamber and the water inlet end being connected with pump chamber and water side, rotating shaft is axially fixed with pump chamber, one stage impeller and sencond stage impeller are fixed with rotating shaft, guide vane wheel is provided between sencond stage impeller and one stage impeller, the lower end of one stage impeller is water inlet, the upper end sidepiece of one stage impeller has delivery port, the downside of guide vane wheel is connected with the delivery port of impeller, guide vane wheel is provided with stator and delivery port two, and the lower end of sencond stage impeller has choma and choma is on the delivery port two of guide vane wheel.The advantages of a kind of this pump assembly of two-stage centrifugal pump, which has, makes the lift of centrifugal pump longer and operating efficiency is higher.
Description
Technical field
The utility model belongs to water pump technology, is related to pump assembly, the pump housing group of particularly a kind of two-stage centrifugal pump
Part.
Background technology
Centrifugal pump has been widely used in producing, lived as a kind of simple in construction, liquid delivery pump of dependable performance
Every aspect.The basic structure of centrifugal pump includes pump case, rotating shaft, impeller, axle sleeve and gland seal device；There is liquid-inlet on pump case
With liquid outlet, impeller is located in pump case with axle sleeve, and impeller axis position is provided with axis hole with axle sleeve axis position, and the rotating shaft is passed through
Enter pump case, the space between the closed pump case of the gland seal device and rotating shaft, rotating shaft is through the axis hole of impeller and the axis hole of axle sleeve, leaf
The axis hole of wheel engages with the axis hole of axle sleeve with rotating shaft, then moves axis of rotation by powered belt such as the motor in the external world or internal combustion engines,
And then impeller rotates, the liquid in impeller is rotated jointly by the promotion of blade with blade.By rotation it is caused from
Mental and physical efforts, liquid is moved out by center, and obtain momentum increment.In impeller periphery, liquid is thrown out of, and passes through the liquid of pump case
Outlet transfers out, because the attenuating of liquid velocity, part kinetic energy are converted into pressure energy in course of conveying, so as to overcome discharge
The resistance of pipeline constantly outflows.Liquid at suction eye makes to form low pressure (or vacuum) at suction inlet because outwards throwing away,
Thus the liquid in suction pit in the lower liquid-inlet passed through on pump case of levels pressure (being usually atmospheric pressure) effect in a steady stream not
The suction inlet of impeller is pressed into disconnectedly, forms the continuous effect of pumping.
Centrifugal multistage pump multiple centrifugal pump (the application number of a kind of self-balancing axial force by impeller as disclosed in Chinese patent literature：
200610038596.X), two-stage above impeller and blower inlet casing connect the multistage that same inlet segment and a water exit end are in series
In centrifugal pump, using the return guide vane blower inlet casing with forward and backward cover plate and the double shrouded wheel with forward and backward cover plate, back shroud of impeller
External diameter be less than the external diameter of front shroud of impeller, impeller inlet uses end face seal, and the cooperation of impeller shaft hole and pump shaft is that gap is matched somebody with somebody
Close.But the lift using the centrifugal pump of above-mentioned setting is shorter and less efficient.
The content of the invention
The purpose of this utility model is above mentioned problem be present for existing technology, it is proposed that a kind of lift for making centrifugal pump
The pump assembly of longer and higher operating efficiency two-stage centrifugal pump.
The purpose of this utility model can be realized by following technical proposal：A kind of pump assembly of two-stage centrifugal pump, bag
Include the pump housing, the described pump housing includes pump chamber and the water inlet end being connected with pump chamber and water side, in described pump chamber axially
Be fixed with rotating shaft, one stage impeller and sencond stage impeller be fixed with described rotating shaft, it is characterised in that described sencond stage impeller with
Be provided with guide vane wheel between described one stage impeller, the lower end of described one stage impeller is water inlet, described one stage impeller it is upper
Side portion has delivery port, and the downside of described guide vane wheel is connected with the delivery port of described impeller, on described guide vane wheel
Provided with stator and delivery port two, the lower end of described sencond stage impeller has choma and described choma is embedded in described guide vane wheel
Delivery port two on.
At work, drive one stage impeller, sencond stage impeller to rotate by rotating shaft, the water at water inlet end is flowed through into one stage impeller
Water inlet be drawn at guide vane wheel, current are imported into by the stator of guide vane wheel at the choma of sencond stage impeller and through two level leaf
Wheel is conveyed and discharged through water side, because the choma of sencond stage impeller is on the delivery port two of guide vane wheel, therefore effectively avoids leading
Between impeller and sencond stage impeller produce leakage, improve lift and make this centrifugal pump operating efficiency it is higher the advantages of.
In a kind of pump assembly of above-mentioned two-stage centrifugal pump, the upper surface of described guide vane wheel is provided with annular groove,
The choma of described sencond stage impeller is in the annular groove of described guide vane wheel.The choma of sencond stage impeller is embedded in annular groove
It is interior, the choma of sencond stage impeller and the sealing effectiveness of annular groove are improved, effectively avoids producing between guide vane wheel and sencond stage impeller
Leakage, improve lift and make this centrifugal pump operating efficiency it is higher the advantages of.
In a kind of pump assembly of above-mentioned two-stage centrifugal pump, it is arranged in described rotating shaft and is fixed with axle sleeve, it is described
Axle sleeve be located at the middle part of described guide vane wheel and the both ends of described axle sleeve are born against in one stage impeller and sencond stage impeller
On end face.By setting above-mentioned axle sleeve, make one stage impeller and sencond stage impeller that there is preferable locating effect, improve this centrifugation
The functional reliability of pump.
In a kind of pump assembly of above-mentioned two-stage centrifugal pump, the lower end of the described pump housing is fixed with pump cover, described
The madial wall of pump cover is provided with convex shoulder, and the lower surface of the choma of described one stage impeller is resisted against on the end face of described convex shoulder, institute
The madial wall of the madial wall for the pump cover stated and the choma of described one stage impeller seamlessly transits.Supported by the lower surface of one stage impeller
Lean against on the end face of convex shoulder, and the madial wall of the choma of the madial wall of pump cover and one stage impeller seamlessly transits, and makes pump cover and one-level
Leakage is not likely to produce between the choma of impeller, improves the functional reliability of this centrifugal pump.
In a kind of pump assembly of above-mentioned two-stage centrifugal pump, the lower end of described pump cover is fixed with hickey, institute
The hickey stated is fixedly connected with described pump cover by screw.Pump cover is fixedly connected with by screw and hickey, has structure
The advantages of simple and connection effect is preferable.
In a kind of pump assembly of above-mentioned two-stage centrifugal pump, the knot of described one stage impeller and described sencond stage impeller
Structure is corresponding.
In a kind of pump assembly of above-mentioned two-stage centrifugal pump, described guide vane wheel uses integrally moulded structure.
Using above-mentioned setting, make guide vane wheel that there is the advantages of manufacturing cost is relatively low and service life is longer.
Compared with prior art, a kind of this pump assembly of two-stage centrifugal pump has advantages below：
1st, because the choma of sencond stage impeller is on the delivery port two of guide vane wheel, therefore guide vane wheel and two level leaf effectively are avoided
Between wheel produce leakage, improve lift and make this centrifugal pump operating efficiency it is higher the advantages of；
2nd, the choma of sencond stage impeller in annular groove, imitate by the sealing for improving the choma and annular groove of sencond stage impeller
Fruit, effectively avoid producing leakage between guide vane wheel and sencond stage impeller, improve lift and make the operating efficiency of this centrifugal pump higher
The advantages of；
3rd, it is resisted against by the lower surface of one stage impeller on the end face of convex shoulder, and the mouth of the madial wall of pump cover and one stage impeller
The madial wall of ring seamlessly transits, and makes to be not likely to produce leakage between pump cover and the choma of one stage impeller, improves the work of this centrifugal pump
Make reliability；
4th, guide vane wheel uses integrally moulded structure, and having guide vane wheel, manufacturing cost is relatively low and service life is longer
Advantage.
Brief description of the drawings
Fig. 1 is a kind of this schematic cross-sectional view of the pump assembly of two-stage centrifugal pump.
Fig. 2 is the schematic cross-sectional view of the guide vane wheel of this pump assembly.
Fig. 3 is Fig. 2 A-A schematic cross-sectional views.
In figure, 1, the pump housing；1a, pump chamber；1b, water inlet end；1c, water side；2nd, rotating shaft；3rd, one stage impeller；3a, water inlet；
4th, sencond stage impeller；5th, guide vane wheel；5a, stator；5b, delivery port two；5c, annular groove；6th, axle sleeve；7th, pump cover；7a, convex shoulder；8、
Hickey；9th, choma.
Embodiment
It is specific embodiment of the utility model and with reference to accompanying drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these embodiments.
As shown in Figures 1 to 3, a kind of pump assembly of two-stage centrifugal pump, including the pump housing 1, the pump housing 1 include pump chamber 1a and with
Rotating shaft 2 is axially fixed with the water inlet end 1b and water side 1c that pump chamber 1a is connected, pump chamber 1a, one-level is fixed with rotating shaft 2
Impeller 3 and sencond stage impeller 4, one stage impeller 3 are corresponding with the structure of sencond stage impeller 4.Between sencond stage impeller 4 and one stage impeller 3
Provided with guide vane wheel 5, guide vane wheel 5 uses integrally moulded structure.
The lower end of one stage impeller 3 is water inlet 3a, and the upper end sidepiece of one stage impeller 3 has delivery port, the downside of guide vane wheel 5
It is connected with the delivery port of impeller, guide vane wheel 5, which is provided with stator 5a and the 5b of delivery port two, the lower end of sencond stage impeller 4, has mouth
Ring 9 and choma 9 are on the 5b of delivery port two of guide vane wheel 5.The upper surface of guide vane wheel 5 is provided with annular groove 5c, sencond stage impeller 4
Choma 9 is in the annular groove 5c of guide vane wheel 5.
It is arranged in rotating shaft 2 and is fixed with axle sleeve 6, axle sleeve 6 is located at the middle part of guide vane wheel 5 and the both ends of axle sleeve 6 and born against
On the end face of one stage impeller 3 and sencond stage impeller 4.
The lower end of the pump housing 1 is fixed with pump cover 7, and the madial wall of pump cover 7 is provided with convex shoulder 7a, the lower end of the choma 9 of one stage impeller 3
Face is resisted against on convex shoulder 7a end face, and the madial wall of the madial wall of pump cover 7 and the choma 9 of one stage impeller 3 seamlessly transits, and makes pump cover
Leakage is not likely to produce between 7 and the choma 9 of one stage impeller 3, improves the functional reliability of this centrifugal pump.
The lower end of pump cover 7 is fixed with hickey 8, and hickey 8 is fixedly connected with pump cover 7 by screw, has structure letter
The advantages of list and preferable connection effect.
At work, drive one stage impeller 3, sencond stage impeller 4 to rotate by rotating shaft 2, the water at water inlet end 1b is flowed through one
The water inlet 3a of level impeller 3 is drawn at guide vane wheel 5, and current are imported into the mouth of sencond stage impeller 4 by the stator 5a of guide vane wheel 5
Convey at ring 9 and through sencond stage impeller 4 and discharged through water side 1c, because the choma 9 of sencond stage impeller 4 is embedded in the annular of guide vane wheel 5
In groove 5c, therefore effectively avoid producing leakage between guide vane wheel 5 and sencond stage impeller 4, improve lift and make this centrifugal pump
The advantages of operating efficiency is higher.By setting above-mentioned axle sleeve 6, make one stage impeller 3 and sencond stage impeller 4 that there is preferably positioning to imitate
Fruit, improve the functional reliability of this centrifugal pump.
Specific embodiment described herein is only to the utility model spirit explanation for example.The utility model institute
Category those skilled in the art can make various modifications or supplement to described specific embodiment or using similar
Mode substitute, but without departing from spirit of the present utility model or surmount scope defined in appended claims.
Although the pump housing 1, pump chamber 1a have more been used herein, water inlet end 1b, water side 1c rotating shafts 2, one stage impeller 3, has been entered
Mouth of a river 3a, sencond stage impeller 4, guide vane wheel 5, stator 5a, the 5b of delivery port two, annular groove 5c, axle sleeve 6, pump cover 7, convex shoulder 7a, screw thread
The terms such as interface 8, choma 9, but it is not precluded from the possibility using other terms.Using these terms just for the sake of more convenient
Ground describes and explains essence of the present utility model；Being construed as any additional limitation is all and the utility model essence
What god disagreed.
Claims (7)
1. a kind of pump assembly of two-stage centrifugal pump, including the pump housing (1), the described pump housing (1) includes pump chamber (1a) and and pump
The water inlet end (1b) and water side (1c) that chamber (1a) is connected, rotating shaft (2) is axially fixed with described pump chamber (1a), it is described
Rotating shaft (2) on be fixed with one stage impeller (3) and sencond stage impeller (4), it is characterised in that described sencond stage impeller (4) and institute
It is provided with guide vane wheel (5) between the one stage impeller (3) stated, the lower end of described one stage impeller (3) is water inlet (3a), described one
The upper end sidepiece of level impeller (3) has delivery port, and the downside of described guide vane wheel (5) is connected with the delivery port of described impeller
Logical, described guide vane wheel (5) is provided with stator (5a) and delivery port two (5b), and the lower end of described sencond stage impeller (4) has
Choma (9) and described choma (9) are on the delivery port two (5b) of described guide vane wheel (5).
A kind of 2. pump assembly of two-stage centrifugal pump according to claim 1, it is characterised in that described guide vane wheel (5)
Upper surface be provided with annular groove (5c), the choma (9) of described sencond stage impeller (4) is embedded in the annular of described guide vane wheel (5)
In groove (5c).
3. the pump assembly of a kind of two-stage centrifugal pump according to claim 1, it is characterised in that in described rotating shaft (2)
It is arranged and is fixed with axle sleeve (6), described axle sleeve (6) is located at the two of the middle part of described guide vane wheel (5) and described axle sleeve (6)
End is born against on the end face of one stage impeller (3) and sencond stage impeller (4).
A kind of 4. pump assembly of two-stage centrifugal pump according to claim 1 or 2 or 3, it is characterised in that the described pump housing
(1) lower end is fixed with pump cover (7), and the madial wall of described pump cover (7) is provided with convex shoulder (7a), described one stage impeller (3)
The lower surface of choma (9) is resisted against on the end face of described convex shoulder (7a), the madial wall of described pump cover (7) and described one-level
The madial wall of the choma (9) of impeller (3) seamlessly transits.
5. the pump assembly of a kind of two-stage centrifugal pump according to claim 4, it is characterised in that described pump cover (7)
Lower end is fixed with hickey (8), and described hickey (8) is fixedly connected with described pump cover (7) by screw.
A kind of 6. pump assembly of two-stage centrifugal pump according to claim 1 or 2 or 3, it is characterised in that described one-level
Impeller (3) is corresponding with the structure of described sencond stage impeller (4).
A kind of 7. pump assembly of two-stage centrifugal pump according to claim 1 or 2 or 3, it is characterised in that described stator
Take turns (5) and use integrally moulded structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720566483.0U CN207064253U (en) | 2017-05-19 | 2017-05-19 | A kind of pump assembly of two-stage centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720566483.0U CN207064253U (en) | 2017-05-19 | 2017-05-19 | A kind of pump assembly of two-stage centrifugal pump |
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| Publication Number | Publication Date |
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| CN207064253U true CN207064253U (en) | 2018-03-02 |
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| CN201720566483.0U Active CN207064253U (en) | 2017-05-19 | 2017-05-19 | A kind of pump assembly of two-stage centrifugal pump |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3792494A1 (en) * | 2019-09-12 | 2021-03-17 | Sunonwealth Electric Machine Industry Co., Ltd. | Fluid transportation device with two part housing |
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2017
- 2017-05-19 CN CN201720566483.0U patent/CN207064253U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3792494A1 (en) * | 2019-09-12 | 2021-03-17 | Sunonwealth Electric Machine Industry Co., Ltd. | Fluid transportation device with two part housing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: TAIZHOU LIOU ENVIRONMENTAL PROTECTION NEW MATERIAL Co.,Ltd. Assignor: LEO GROUP PUMP (ZHEJIANG) Co.,Ltd. Contract record no.: X2023330000499 Denomination of utility model: A pump body component of a two-stage centrifugal pump Granted publication date: 20180302 License type: Common License Record date: 20230809 Assignee: Zhejiang Leo Water Technology Co.,Ltd. Assignor: LEO GROUP PUMP (ZHEJIANG) Co.,Ltd. Contract record no.: X2023330000498 Denomination of utility model: A pump body component of a two-stage centrifugal pump Granted publication date: 20180302 License type: Common License Record date: 20230809 |
|
| EE01 | Entry into force of recordation of patent licensing contract |