CN109236667A - Centrifugal multistage pump multiple centrifugal pump with impeller positioning snap ring structure - Google Patents
Centrifugal multistage pump multiple centrifugal pump with impeller positioning snap ring structure Download PDFInfo
- Publication number
- CN109236667A CN109236667A CN201811433494.7A CN201811433494A CN109236667A CN 109236667 A CN109236667 A CN 109236667A CN 201811433494 A CN201811433494 A CN 201811433494A CN 109236667 A CN109236667 A CN 109236667A
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- CN
- China
- Prior art keywords
- pump
- impeller
- groove
- pump housing
- snap ring
- 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.)
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Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 238000009434 installation Methods 0.000 claims description 7
- 238000010276 construction Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 6
- 239000007788 liquid Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D1/06—Multi-stage pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/043—Shafts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/18—Rotors
- F04D29/20—Mounting rotors on shafts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
- F04D29/2205—Conventional flow pattern
- F04D29/2222—Construction and assembly
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention relates to a kind of centrifugal multistage pump multiple centrifugal pumps with impeller positioning snap ring structure, including the inlet segment pump housing, multi-stage impeller structure, multiple middle section pump housings and the water exit end pump housing；The inlet segment pump housing, multi-stage impeller structure, multiple middle section pump housings and the water exit end pump housing are sequentially sleeved on pump shaft；Every grade of blade wheel structure includes impeller, guide vane and impeller positioning snap ring；Impeller includes wheel hub, and impeller is fixed on pump shaft by key；Guide blade sleeve is in the outside of impeller；The front end of wheel hub offers the first groove of annular；Pump shaft circumferentially offers the second groove of annular；Hub sleeve is taken turns on pump shaft, has gap between the first groove and the second groove；Gap is the annular groove of annular；Impeller positioning snap ring is mounted in annular groove.The present invention reduces the assembly difficulty of centrifugal multistage pump multiple centrifugal pump by impeller positioning snap ring, improves assembly precision；Reduce the damage in centrifugal multistage pump multiple centrifugal pump operational process to impeller, extends the service life of pump.
Description
Technical field
The present invention relates to centrifugal multistage pump multiple centrifugal pump fields, in particular to the centrifugal multistage pump multiple centrifugal pump with impeller positioning snap ring structure.
Background technique
Centrifugal multistage pump multiple centrifugal pump includes the inlet segment pump housing, multi-stage impeller structure, multiple middle section pump housings and the water exit end pump housing.Inlet segment
The pump housing, multi-stage impeller structure, multiple middle section pump housings and the water exit end pump housing are sequentially sleeved on pump shaft.It is each at present when installation impeller
The hub nose face of grade impeller is directly contacted with the wheel hub rear end face of upper level impeller, and adjacent both stage impellers abut.If assembly
There is certain one stage impeller unassembled in place in the process, will have a direct impact on the rigging position of all impellers below, causes to generate assembly mistake
Difference.A possibility that series of centrifugal multistage pump multiple centrifugal pump is more, generates this rigging error are bigger.
In the operational process of centrifugal multistage pump multiple centrifugal pump, since adjacent both stage impellers abut, the power that upper level impeller is born can be straight
It connects and is transmitted to next stage impeller, the power for causing impeller in the backward to bear is bigger.And the series of centrifugal multistage pump multiple centrifugal pump is more, final stage leaf
A possibility that power for taking turns receiving is bigger, impeller failure is also bigger.
Summary of the invention
In view of the deficiencies of the prior art, the invention discloses the centrifugal multistage pump multiple centrifugal pumps with impeller positioning snap ring structure.
The technical solution adopted in the present invention is as follows:
A kind of centrifugal multistage pump multiple centrifugal pump with impeller positioning snap ring structure, including the inlet segment pump housing, multi-stage impeller structure, Duo Gezhong
The section pump housing and the water exit end pump housing；The inlet segment pump housing, multi-stage impeller structure, multiple middle section pump housings and the water exit end pump housing are sequentially sleeved in pump
On axis；Every grade of blade wheel structure includes impeller, guide vane and impeller positioning snap ring；Impeller includes wheel hub, and impeller is fixed on pump by key
On axis；Guide blade sleeve is in the outside of impeller；The front end of the wheel hub offers the first groove of annular；Pump shaft circumferentially offers ring
Second groove of shape；Hub sleeve is taken turns on pump shaft, has gap between the first groove and the second groove；The gap is the snap ring of annular
Slot；Impeller positioning snap ring is mounted in annular groove.
Its further technical characteristic are as follows: gap between the inlet segment pump housing and the chopped-off head middle section pump housing, two neighboring
Gap, the final stage middle section pump housing between the pump housing of middle section and the gap between the water exit end pump housing are respectively formed pump chamber, install leaf in pump chamber
Wheel and guide vane.
Its further technical characteristic are as follows: between the inlet segment pump housing and the chopped-off head middle section pump housing, two neighboring middle section pump
O-ring seal groove is opened up between body, between the final stage middle section pump housing and the water exit end pump housing；It is equipped in the O-ring seal groove O-shaped
Sealing ring.
Its further technical characteristic are as follows: impeller groove is offered on the inner wall of the axis hole of the impeller, the pump shaft
Offer the pump shaft groove being correspondingly arranged with the impeller groove on outer surface, the key be installed on the impeller groove with it is described
Between pump shaft groove, impeller and pump shaft are fixed together.
Beneficial effects of the present invention are as follows:
The present invention opens up wheel hub groove by the front end of the wheel hub in impeller, and the outer surface of pump shaft opens up pump shaft groove, and
The position of pump shaft groove is corresponding with the position of wheel hub groove, by impeller positioning snap ring be mounted on wheel hub groove and pump shaft groove it
Between.The axial position of every grade of impeller is fixed by impeller snap ring, every grade of impeller will not move axially, no matter centrifugal multistage pump multiple centrifugal pump
Series quantity, greatly reduce assembly difficulty and generate rigging error a possibility that.And since every grade of impeller is all only
It halts position, independent stressed, adjacent both stage impellers are not directly contacted with, and the power that upper level impeller is born will not be transmitted to next stage leaf
A possibility that taking turns, greatly reducing impeller failure.
By simple impeller positioning snap ring, the assembly difficulty of centrifugal multistage pump multiple centrifugal pump is reduced, centrifugal multistage pump multiple centrifugal pump is improved
Assembly precision；Reduce damage of the power born in centrifugal multistage pump multiple centrifugal pump operational process to impeller, extends making for centrifugal multistage pump multiple centrifugal pump
Use the service life.
Detailed description of the invention
Fig. 1 is sectional view of the invention.
Fig. 2 is the structural schematic diagram of the impeller in Fig. 1 on pump shaft.
Fig. 3 is the structural schematic diagram of pump shaft in Fig. 1.
Fig. 4 is the enlarged diagram of single-stage impeller installation in Fig. 1.
In figure: 1, the inlet segment pump housing；2, the middle section pump housing；3, the water exit end pump housing；4, impeller；5, guide vane；6, O-ring seals
Slot；7, key；8, pump shaft；9, annular groove；10, impeller positioning snap ring；11, the first groove；12, the second groove.
Specific embodiment
With reference to the accompanying drawing, illustrate the specific embodiment of the present embodiment.
Fig. 1 is sectional view of the invention.As shown in Figure 1, the present invention include the inlet segment pump housing 1, it is multi-stage impeller structure, multiple
The middle section pump housing 2 and the water exit end pump housing 3.The inlet segment pump housing 1, multi-stage impeller structure, multiple middle section pump housings 2 and the water exit end pump housing 3 according to
It is secondary to cover on pump shaft 8.Between the inlet segment pump housing 1 and the chopped-off head middle section pump housing 2, between the two neighboring middle section pump housing 2, final stage middle section pump
O-ring seal groove 6 is opened up between body 2 and the water exit end pump housing 3.O-ring seal is installed in O-ring seal groove 6.
Every grade of blade wheel structure includes impeller 4, guide vane 5 and impeller positioning snap ring 10.The inlet segment pump housing 1 and the chopped-off head middle section pump housing
The gap between the gap between gap, the adjacent two-stage middle section pump housing 2, the final stage middle section pump housing 2 and the water exit end pump housing 3 between 2
It is respectively formed pump chamber, installation impeller 4 and guide vane 5 in pump chamber form the pump chamber that can convey liquid.O-ring seal seals pump chamber.
Impeller groove is offered on the inner wall of the axis hole of impeller 4, and the pump being correspondingly arranged with impeller groove is offered on the outer surface of pump shaft 8
Axis groove, key 7 are installed between impeller groove and pump shaft groove, and impeller 4 and pump shaft 8 are fixed together.Centrifugal multistage pump multiple centrifugal pump fortune
When row, impeller 4 is rotated with pump shaft 8, and impeller 4 drives liquid in rotation, to convey liquid.
Fig. 2 is the structural schematic diagram of the impeller in Fig. 1 on pump shaft, and Fig. 3 is the structural schematic diagram of pump shaft in Fig. 1.In conjunction with figure
2, Fig. 3, impeller 4 include wheel hub.5 sets of the guide vane outsides in impeller 4.The front end of wheel hub offers the first groove 11 of annular.Pump
Axis 8 circumferentially offers the second groove 12 of annular.Hub sleeve is taken turns on pump shaft 8, the first groove 11 and the second groove 12 are corresponding.
Gap is formed between first groove 11 and the second groove 12, gap is an annular annular groove 9.Impeller positioning snap ring 10 is installed
In annular groove 9.
Fig. 4 is the enlarged diagram of single-stage impeller installation in Fig. 1.As shown in figure 4, the installation process of every grade of impeller 4 is as follows:
Impeller 4 includes wheel hub, and the front end of wheel hub offers circular first groove 11.Pump shaft 8 circumferentially offers circle
The second groove 12.Hub sleeve is taken turns on pump shaft 8, the first groove 11 and the second groove 12 are corresponding.First groove 11 and second is recessed
Gap is formed between slot 12, gap is the annular groove 9 of annular.Two neighboring annular groove 9 consolidates the installation site of an impeller 4
It is fixed.Impeller positioning snap ring 10 is installed in annular groove 9.When installation, first by 10 sets of an impeller positioning snap ring annular groove in impeller 4
On 9, it is then inserted in impeller 4, then covers a upper impeller positioning snap ring 10 on the latter annular groove 9 of impeller 4.Two impellers are fixed
Position snap ring 10 fixes the axial position of an impeller 4, and impeller 4 will not move axially, and greatly reduce assembly difficulty and generation
A possibility that rigging error.
Above description is explanation of the invention, is not intended to limit the invention, and limited range of the present invention is referring to right
It is required that the present invention can make any type of modification without prejudice to basic structure of the invention.
Claims (4)
1. a kind of centrifugal multistage pump multiple centrifugal pump with impeller positioning snap ring structure, it is characterised in that: including the inlet segment pump housing (1), multistage leaf
Wheel construction, multiple middle section pump housings (2) and the water exit end pump housing (3)；The inlet segment pump housing (1), multi-stage impeller structure, multiple middle section pump housings
(2) it is sequentially sleeved on pump shaft (8) with the water exit end pump housing (3)；Every grade of blade wheel structure includes impeller (4), guide vane (5) and impeller positioning
Snap ring (10)；Impeller (4) includes wheel hub, and impeller (4) is fixed on pump shaft (8) by key (7)；Guide vane (5) is covered in impeller (4)
Outside；The front end of the wheel hub offers the first groove (11) of annular；Pump shaft (8) circumferentially offers the second groove of annular
(12)；Hub sleeve is taken turns on pump shaft (8), has gap between the first groove (11) and the second groove (12)；The gap is annular
Annular groove (9)；Impeller positioning snap ring (10) is mounted in annular groove (9).
2. the centrifugal multistage pump multiple centrifugal pump according to claim 1 with impeller positioning snap ring structure, it is characterised in that: the inlet segment
The gap between gap, the two neighboring middle section pump housing (2) between the pump housing (1) and the chopped-off head middle section pump housing (2), the final stage middle section pump housing
(2) gap between the water exit end pump housing (3) is respectively formed pump chamber, installation impeller (4) and guide vane (5) in pump chamber.
3. the centrifugal multistage pump multiple centrifugal pump according to claim 1 with impeller positioning snap ring structure, it is characterised in that: the inlet segment
Between the pump housing (1) and the chopped-off head middle section pump housing (2), between the two neighboring middle section pump housing (2), the final stage middle section pump housing (2) and water exit end
O-ring seal groove (6) are opened up between the pump housing (3)；O-ring seal (6) are installed in the O-ring seal groove.
4. the centrifugal multistage pump multiple centrifugal pump according to claim 1 with impeller positioning snap ring structure, it is characterised in that: the impeller
(4) impeller groove is offered on the inner wall of axis hole, is offered on the outer surface of the pump shaft (8) corresponding with the impeller groove
The pump shaft groove of setting, the key (7) are installed between the impeller groove and the pump shaft groove, by impeller (4) and pump shaft
(8) it is fixed together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811433494.7A CN109236667A (en) | 2018-11-28 | 2018-11-28 | Centrifugal multistage pump multiple centrifugal pump with impeller positioning snap ring structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811433494.7A CN109236667A (en) | 2018-11-28 | 2018-11-28 | Centrifugal multistage pump multiple centrifugal pump with impeller positioning snap ring structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109236667A true CN109236667A (en) | 2019-01-18 |
Family
ID=65074233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811433494.7A Withdrawn CN109236667A (en) | 2018-11-28 | 2018-11-28 | Centrifugal multistage pump multiple centrifugal pump with impeller positioning snap ring structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109236667A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111207080A (en) * | 2020-01-22 | 2020-05-29 | 陈科 | Chemical pump with shaft-split middle-opening conveniently-disassembled structure |
-
2018
- 2018-11-28 CN CN201811433494.7A patent/CN109236667A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111207080A (en) * | 2020-01-22 | 2020-05-29 | 陈科 | Chemical pump with shaft-split middle-opening conveniently-disassembled structure |
| CN111207080B (en) * | 2020-01-22 | 2020-12-15 | 乐清市芮易经济信息咨询有限公司 | Chemical pump with shaft-split middle-opening conveniently-disassembled structure |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190118 |