CN108119369A - One kind is with helicla flute balance drum-type high-efficiency multi-stage pump - Google Patents
One kind is with helicla flute balance drum-type high-efficiency multi-stage pump Download PDFInfo
- Publication number
- CN108119369A CN108119369A CN201810156213.1A CN201810156213A CN108119369A CN 108119369 A CN108119369 A CN 108119369A CN 201810156213 A CN201810156213 A CN 201810156213A CN 108119369 A CN108119369 A CN 108119369A
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- CN
- China
- Prior art keywords
- pump
- impeller
- stage
- drum
- balancing drum
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- 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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Classifications
-
- 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
- F04D29/041—Axial thrust balancing
- F04D29/0413—Axial thrust balancing hydrostatic; hydrodynamic thrust bearings
-
- 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
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/669—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for liquid pumps
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses one kind with helicla flute balance drum-type high-efficiency multi-stage pump, mainly include the pump housing, pump shaft, first stage impeller, multiple intermediate impellers and impeller, the side front and rear part of the pump housing offers pump intake and pump discharge respectively, pump shaft is in anterior-posterior horizontal to being movably arranged in the pump housing, and first stage impeller and impeller are respectively sleeved at the front and back end of pump shaft, invention achieves the purposes for reducing amount of leakage, so as to improve the efficiency of centrifugal multistage pump multiple centrifugal pump, at the same time, medium is revealed by spiral fluted portion to re-enter into inside band spiral groove type balancing drum, it reduces and the eddy flow that medium generates is revealed at the b of gap, reduce parts vibration, extend the service life of centrifugal pump.
Description
Technical field
The present invention relates to multistage pump field, more particularly, to one kind with helicla flute balance drum-type high-efficiency multi-stage pump.
Background technology
Multistage pump can be used for many industrial departments such as oil, chemical industry, machinery, mine, light industry, medicine and food.In order to full
Sufficient technique needs, and improves the lift of centrifugal pump, for multistage pump equipped with two or more impellers on pump shaft, what is at this moment pumped is total
The sum of lift that lift generates for multiple impellers.At the suction inlet of single suction receded disk impeller, due to impeller front and rear cover plate not
Symmetrically, the axial force of a direction suction inlet can be generated in the operation process of pump.The axial force seems very in multistage pump
Greatly, therefore the axial force of balanced multistage pump is an extremely important design procedure.
As the critical piece of balanced multistage pump axial force, existing balance device structure is generally put down using simple single gap
For face constitutional balance drum with that can generate larger leakage rate at balancing drum inner room radial direction gap, leakage rate is reachable to pump the 25% of design discharge,
Greatly reduce the service efficiency of multistage pump.It balances simultaneously and eddy flow is also easy to produce at drum of outer gap, trigger vibration equipment, noise etc.
Adverse effect, so as to reduce the reliability that equipment uses.
The sharp document of special note of 104006002 A of Chinese patent application publication No. CN has carried a kind of balance for multistage pump
Drum, equipped with balancing drum body, it is characterised in that balancing drum body outer surface is equipped with annular broach slot vertically, the broach slot
Cross section is triangular in shape, when pump operate when, generate eddy flow at balance drum of outer gap although avoiding, add pump operation can
By property, but do not change the problem of balance set leakage rate is big, the efficiency of multistage pump is not improved still.
The content of the invention
The present invention is to overcome the above situation insufficient, it is desirable to provide a kind of technical solution that can be solved the above problems.
One kind is with helicla flute balance drum-type high-efficiency multi-stage pump, mainly including the pump housing, pump shaft, first stage impeller, multiple centres
Impeller and impeller, the side front and rear part of the pump housing offer pump intake and pump discharge respectively, and pump shaft is in anterior-posterior horizontal
To being movably arranged in the pump housing, and first stage impeller and impeller are respectively sleeved at the front and back end of pump shaft, and intermediate impeller is between equidistant
It is set in every setting and fixation on pump shaft, and intermediate impeller is between first stage impeller and impeller；First stage impeller and final stage
Impeller is respectively positioned between pump intake and pump discharge；The front and back end of the pump shaft is arranged with suspended rack assembly, the axis in suspended rack assembly
Hold that inner ring is fixedly sleeved with pump shaft, and suspended rack assembly periwinkle collecting bolt is separately fixed at the rear ends of the pump housing, suspended rack assembly plays pair
The rotational support and sealing function of pump shaft；The forward position of the first stage impeller is equipped with balancing drum, and balancing drum fixing sleeve is in pump shaft
On, and helicla flute is machined on the inner wall of balancing drum；The outside spacers of the balancing drum are arranged with balancing drum set, and balancing drum set is adopted
The pump housing is fixedly connected with bolt, and counter balance pocket, balancing drum and balancing drum are equipped between the front surface of balancing drum set and suspended rack assembly
Gap between set is connected with counter balance pocket.
As further embodiment of the present invention：The rotation direction of helicla flute and first stage impeller, intermediate impeller and impeller one
It causes.
As further embodiment of the present invention：The counter balance pocket is connected with the pump intake by pipeline.
Beneficial effects of the present invention：Invention achieves the purpose for reducing amount of leakage, so as to improve centrifugal multistage pump multiple centrifugal pump
At the same time efficiency, is revealed medium by spiral fluted portion and is re-entered into inside band spiral groove type balancing drum, reduce gap
The eddy flow that medium generates is revealed at b, reduces parts vibration, extends the service life of centrifugal pump.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
It obtains substantially or is recognized by the practice of the present invention.
Description of the drawings
It in order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, may be used also
To obtain other attached drawings according to these attached drawings.
Fig. 1 is schematic structural view of the invention；
Fig. 2 is the enlarged drawing at A shown in Fig. 1 of the present invention.
Fig. 3 is the band isometric side schematic diagram of spiral groove type balancing drum in Fig. 1.
Fig. 4 is band spiral groove type balancing drum diagrammatic cross-section in Fig. 1.
In figure：1- pump intakes, 2- pump shafts, 3- first stage impellers, 4- intermediate impellers, 5- impellers, 6- pump discharges, 7- balances
Drum, 8- balancing drums set, 9- counter balance pockets, 10- suspended rack assemblies, 11- helicla flutes, 12- impellers lateral surface, 13- impellers end face.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment belongs to the scope of protection of the invention.
Please refer to Fig.1~4, in the embodiment of the present invention, one kind mainly includes with helicla flute balance drum-type high-efficiency multi-stage pump
The pump housing, pump shaft 2, first stage impeller 3, multiple intermediate impellers 4 and impeller 5, the side front and rear part of the pump housing open up respectively
There are a pump intake 1 and pump discharge 6, pump shaft 2 is in anterior-posterior horizontal to being movably arranged in the pump housing, and first stage impeller 3 and impeller 5 are distinguished
The front and back end of pump shaft 2 is set in, intermediate impeller 4 sets and fixes in equi-spaced apart and is set on pump shaft 2, and intermediate impeller 4
Between first stage impeller 3 and impeller 5；First stage impeller 3 and impeller 5 are respectively positioned between pump intake 1 and pump discharge 6；Institute
The front and back end for stating pump shaft 2 is arranged with suspended rack assembly 10, and the bearing inner race and pump shaft 2 in suspended rack assembly 10 are fixedly sleeved, and outstanding
10 periwinkle collecting bolt of frame component is separately fixed at the rear ends of the pump housing, and suspended rack assembly 10 plays the rotational support to pump shaft 2 and sealing
Effect；The forward position of the first stage impeller 3 is equipped with balancing drum 7, and 7 fixing sleeve of balancing drum is on pump shaft 2, and balancing drum 7 is interior
Helicla flute is machined on wall；The outside spacers of the balancing drum 7 are arranged with balancing drum set 8, and balancing drum covers 8 companies of being fixed by bolts
The pump housing is connect, and counter balance pocket 9 is equipped between the front surface of balancing drum set 8 and suspended rack assembly, between balancing drum 7 and balancing drum set 8
Gap is connected with counter balance pocket 9.
The rotation direction of helicla flute is consistent with first stage impeller 3, intermediate impeller 4 and impeller 5.
The counter balance pocket 9 is connected with the pump intake 1 by pipeline.
The present invention operation principle be：There are gap b between band spiral groove type balancing drum 7 and balancing drum set 8, in band spiral
Pressure between slot type balancing drum 7 and impeller 5 is P1, and 9 internal pressure of counter balance pocket is P2, in multistage centrifugal pump operation,
By driving machine pump shaft 2 is driven to rotate, so as to drive the first stage impeller 3, multiple intermediate impellers 4 and the final stage leaf that pass through pump shaft 2
It takes turns 5 and is rotated with spiral groove type balancing drum 7, pumped (conveying) medium is transported to by pump intake 1 at pump discharge 6.In the process of running,
Medium reaches maximum pressure P1 by first stage impeller 3, multiple intermediate impellers 4 at impeller 5, due to balancing drum 7 and balance
There are gap b, certain media can be leaked under pressure by gap b in counter balance pocket 9 between drum set 8, and counter balance pocket 9 with
Pump intake 1 is connected, therefore the pressure P2 in counter balance pocket 9 is lower than pressure P1, so as to have the function that balancing axial thrust.But
It is, due to that, there are gap b, certain media can be caused to reveal between band spiral groove type balancing drum 7 and balancing drum set 8, due to band spiral shell
Spin slot formula balancing drum 7 rotates under the drive of pump shaft 2, and band spiral groove type balancing drum 7 will pass through gap b by setting helicla flute 11
Medium sucked by impeller lateral surface 12 in helicla flute 11, and by centrifugal force act on, medium is thrown away outside impeller end face 13, is made
A medium part for leakage is reentered in the cavity of pump discharge 6, has achieved the purpose that reduce amount of leakage, so as to improve multistage
The efficiency of centrifugal pump.At the same time, medium is revealed by 11 part of helicla flute to re-enter into band spiral groove type balancing drum 7
Portion reduces and the eddy flow that medium generates is revealed at the b of gap, reduces parts vibration, extends the service life of centrifugal pump.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Profit requirement rather than above description limit, it is intended that all by what is fallen within the meaning and scope of the equivalent requirements of the claims
Variation is included within the present invention.Any reference numeral in claim should not be considered as to the involved claim of limitation.
Claims (3)
1. one kind is with helicla flute balance drum-type high-efficiency multi-stage pump, mainly including the pump housing, pump shaft, first stage impeller, multiple intermediate leaves
Wheel and impeller, the side front and rear part of the pump housing offer pump intake and pump discharge respectively, pump shaft in anterior-posterior horizontal to
It is movably arranged in the pump housing, and first stage impeller and impeller are respectively sleeved at the front and back end of pump shaft, intermediate impeller is in equi-spaced apart
It sets and fixes and be set on pump shaft, and intermediate impeller is between first stage impeller and impeller；First stage impeller and final stage leaf
Wheel is respectively positioned between pump intake and pump discharge；The front and back end of the pump shaft is arranged with suspended rack assembly, the bearing in suspended rack assembly
Inner ring is fixedly sleeved with pump shaft, and suspended rack assembly periwinkle collecting bolt is separately fixed at the rear ends of the pump housing, and suspended rack assembly is played to pump
The rotational support and sealing function of axis；It is characterized in that, the forward position of the first stage impeller is equipped with balancing drum, balancing drum is fixed
It is sleeved on pump shaft, and helicla flute is machined on the inner wall of balancing drum；The outside spacers of the balancing drum are arranged with balancing drum set, put down
Weighing apparatus drum set is fixed by bolts the connection pump housing, and is equipped with counter balance pocket, balancing drum between the front surface of balancing drum set and suspended rack assembly
Gap between being covered with balancing drum is connected with counter balance pocket.
2. according to claim 1 with helicla flute balance drum-type high-efficiency multi-stage pump, which is characterized in that the rotation direction and chopped-off head of helicla flute
Impeller, intermediate impeller and impeller are consistent.
3. according to claim 1 with helicla flute balance drum-type high-efficiency multi-stage pump, which is characterized in that the counter balance pocket and the pump
Entrance is connected by pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810156213.1A CN108119369A (en) | 2018-02-24 | 2018-02-24 | One kind is with helicla flute balance drum-type high-efficiency multi-stage pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810156213.1A CN108119369A (en) | 2018-02-24 | 2018-02-24 | One kind is with helicla flute balance drum-type high-efficiency multi-stage pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108119369A true CN108119369A (en) | 2018-06-05 |
Family
ID=62234456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810156213.1A Pending CN108119369A (en) | 2018-02-24 | 2018-02-24 | One kind is with helicla flute balance drum-type high-efficiency multi-stage pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108119369A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108889456A (en) * | 2018-08-10 | 2018-11-27 | 彭国民 | Raw mineral materials high speed tubular type centrifugal separation system |
-
2018
- 2018-02-24 CN CN201810156213.1A patent/CN108119369A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108889456A (en) * | 2018-08-10 | 2018-11-27 | 彭国民 | Raw mineral materials high speed tubular type centrifugal separation system |
| CN108889456B (en) * | 2018-08-10 | 2023-11-21 | 彭国民 | High-speed tubular centrifugal separation system for mineral raw materials |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zheng Xin Inventor after: Wang Xiangyu Inventor after: Wang Dianyuan Inventor after: Wang Tailu Inventor after: Guan Jianrong Inventor before: Zheng Xin Inventor before: Li Chen Inventor before: Yu Yang |