CN108005908A - A kind of centrifugal pump of anti-cavitation - Google Patents
A kind of centrifugal pump of anti-cavitation Download PDFInfo
- Publication number
- CN108005908A CN108005908A CN201711381160.5A CN201711381160A CN108005908A CN 108005908 A CN108005908 A CN 108005908A CN 201711381160 A CN201711381160 A CN 201711381160A CN 108005908 A CN108005908 A CN 108005908A
- Authority
- CN
- China
- Prior art keywords
- pump
- tube
- cavitation
- insulation
- drainage
- 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.)
- Pending
Links
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
-
- 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
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid 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
- F04D29/66—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
Abstract
The invention discloses a kind of centrifugal pump of anti-cavitation, the centrifugal pump of the anti-cavitation includes pump body, insulation flanged fitting and induction apparatus, and the induction apparatus is connected with the pump body and insulation flanged fitting respectively；Pump body inlet tube and diffuser are provided with the pump body, one end of the diffuser is connected with pump body, and the other end of the diffuser is provided with pump discharge, and is provided with pump intake on the insulation flanged fitting；The induction apparatus includes drainage pipe and incident pipeline, wherein, one end of the drainage pipe connects the diffuser, the other end connection incident pipeline；One end connection pump body inlet tube of the incidence pipeline, the other end of incident pipeline connect the insulation flanged fitting.The configuration of the present invention is simple, fully ensures that fluid pressure is higher than the pressure for vaporization value of liquid itself, avoids cavitation phenomenon, effectively improve centrifugal pump anti-cavitation performance.
Description
Technical field
The present invention relates to conveying technical field of power equipment, more particularly, to a kind of centrifugal pump of anti-cavitation.
Background technology
Centrifugal pump（centrifugal pump）Refer to convey the pump of liquid by centrifugal force caused by impeller rotation.From
Heart pump has the diversified forms such as vertical, horizontal, single-stage, multistage, single suction, double suction, self-priming.Vertical centrifugal pump is referred to as submerged pump,
Fused salt submerged pump.Centrifugal pump has the diversified forms such as vertical, horizontal, single-stage, multistage, single suction, double suction, self-priming.Centrifugal pump is profit
Rotated with impeller and make water that centrifugal movement occur come work.Water pump is before activation, it is necessary to makes to be full of water in pump case and suction hose,
Then starting motor, pump shaft impeller and water is done high speed rotary motion, water occurs centrifugal movement, is thrown toward impeller outer edge,
Runner through volute pump case flows into the pressure pipe road of water pump.
Centrifugation is the performance of object inertia in fact, such as the water droplet on umbrella, when umbrella slowly rotates, water droplet can follow
Umbrella rotates, this is because the frictional force of umbrella and water droplet makes so as the centripetal force to water droplet.But add if umbrella rotates
It hurry up, this frictional force is insufficient to allow water droplet moving in a circle, then water droplet will be disengaged from umbrella and be moved to outer rim, just as with one
Rope hauls stone and moves in a circle, if speed is too fast, rope will will disconnect, stone will fly out this be exactly so-called
Centrifugation.
It is due to that the pressure at some local depression areas of fluid passage entrance is reduced to hold-up that cavitation, which occurs, for centrifugal pump
Vapour pressure, cause partially liq vaporize caused by.So all factors that local pressure can be made to be reduced to liquid pressure for vaporization all may
It is the reason for inducing cavitation.The condition for producing cavitation should be from the characteristic of suction apparatus.
Centrifugal multistage pump multiple centrifugal pump is well-known, it is equipped with multiple pump stages between head portion and base section, each pump
Level is made of the shaped spiral housing of impeller of pump and encirclement impeller of pump, and impeller is arranged on common axis.Here, head portion and bottom
Portion part is in the case of including pump stage by being connected to each other positioned at exterior, screw form pull rod.
At present, a kind of simple in structure, the centrifugal pump of the anti-cavitation of reduction centrifugal pump anti-cavitation performance is lacked.
The content of the invention
It is a kind of simple in structure in view of the deficiencies of the prior art, the present invention intends to provide, reduce centrifugal pump and resist
The centrifugal pump of the anti-cavitation of cavitation performance.
To achieve the above object, the present invention provides following technical solution：A kind of centrifugal pump of anti-cavitation of the present invention, institute
Stating the centrifugal pump of anti-cavitation includes pump body, insulation flanged fitting and induction apparatus, and the induction apparatus pumps this with described respectively
Body is connected with insulation flanged fitting；It is provided with the pump body and pumps body inlet tube and diffuser, the one of the diffuser
End is connected with pump body, and the other end of the diffuser is provided with pump discharge, and is provided with pump on the insulation flanged fitting
Entrance；The induction apparatus includes drainage pipe and incident pipeline, wherein, one end of the drainage pipe connects the diffusion
Pipe, the other end connection incident pipeline；It is described incidence pipeline one end connection it is described pump body inlet tube, incident pipeline it is another
One end connects the insulation flanged fitting, and the incidence pipeline is respectively with pumping body inlet tube and insulation flanged fitting carry out activity
Connection；The incidence pipeline includes bushing, and incident chamber shell, the incidence chamber shell and high pressure are provided with the bushing
Casing is connected, and the incidence chamber shell is fastened around on the bushing；The drainage pipe and the incident chamber shell phase
Connection；The insulation flanged fitting includes chassis and tube body, and the bottom of tube body is welded in the inner radius on chassis, is set on the chassis
Through hole is equipped with, the outer surface of the tube body is provided with polyurethane insulation coating.
In the centrifugal pump of above-mentioned anti-cavitation, the cross section of the chassis and tube body is in annular shape.
In the centrifugal pump of above-mentioned anti-cavitation, the top of the tube wall is provided with protrusion.
In the centrifugal pump of above-mentioned anti-cavitation, the internal diameter of the tube body is provided with internal thread.
In the centrifugal pump of above-mentioned anti-cavitation, the incident chamber of the incidence chamber shell is connected with the inner cavity of the bushing
It is logical.
In the centrifugal pump of above-mentioned anti-cavitation, interior spiral shell is provided with the both ends of the bushing and the bushing
The external screw thread being adapted with the internal thread is provided with line, the pump body inlet tube and the insulation flanged fitting.
In the centrifugal pump of above-mentioned anti-cavitation, the bottom of the pump body is provided with footing.
In the centrifugal pump of above-mentioned anti-cavitation, the drainage pipe include be sequentially communicated drainage tube, drainage bend pipe and
Telescoping tube, the centre position of diffuser is connected described in one end of the drainage tube, one end of the drainage tube and the diffusion
Pipe is connected, and one end of the telescoping tube is connected with the incident pipeline.
In the centrifugal pump of above-mentioned anti-cavitation, electrically operated valve is provided between the drainage tube and the drainage bend pipe,
And the electrically operated valve is respectively communicated with the drainage tube and the drainage bend pipe.
Beneficial effect：The configuration of the present invention is simple, it is easy to use, it is of low cost, by the drainage tube and drainage bend pipe
Regulating valve is set, and the drainage tube and drainage bend pipe are connected by regulating valve, so as to freely adjust draught jet capacity by the regulating valve
Size, at impeller eye low pressure low energy fluid carry out pressure compensation, fully ensure that fluid pressure is higher than liquid itself
Pressure for vaporization value, avoid cavitation phenomenon, effectively improve centrifugal pump anti-cavitation performance.
Brief description of the drawings
Fig. 1 is the structure diagram of the present invention；
Fig. 2 is the structure diagram of the insulation flanged fitting of the present invention；
Wherein, pump intake 1, pump discharge 2, pump body 3, diffuser 4, footing 5, drainage tube 6, electrically operated valve 7, drainage bend pipe
8th, telescoping tube 9, pump body inlet tube 13,10 keep the temperature flanged fitting, chassis 101, tube body 102, protrusion 103, through hole 104,
Bushing 11, incident chamber shell 12.
Embodiment
The present invention is further illustrated by the following examples.It should be understood that these embodiments are the explainations of the present invention
And citing, do not limit the scope of the invention in any form.
As depicted in figs. 1 and 2, the centrifugal pump of a kind of anti-cavitation of the invention, the centrifugal pump of the anti-cavitation include pump originally
Body 3, insulation flanged fitting 10 and induction apparatus, the induction apparatus pump body 3 and insulation flanged fitting 10 with described respectively
It is connected；Pump body inlet tube 13 and diffuser 4 are provided with the pump body 3, one end of the diffuser 4 is with pumping this
Body 3 is connected, and the other end of the diffuser 4 is provided with pump discharge 2, and is provided with pump on the insulation flanged fitting 10
Entrance 1；The induction apparatus includes drainage pipe and incident pipeline, wherein, one end of the drainage pipe connects the diffusion
Pipe 4, the other end connection incident pipeline；One end connection pump body entrance 13 of the incidence pipeline, incident pipeline
The other end connection insulation flanged fitting 10, the incidence pipeline is respectively with pumping body inlet tube 13 and insulation flanged fitting
10 are flexibly connected；The incidence pipeline includes bushing 11, and incident chamber shell 12 is provided with the bushing 11,
The incidence chamber shell 12 is connected with bushing 11, and the incidence chamber shell 12 is fastened around on the bushing 11；
The drainage pipe is connected with the incident chamber shell 12；The insulation flanged fitting 10 includes chassis 101 and tube body 102,
The bottom of tube body 102 is welded in the inner radius on chassis 101, and through hole 104 is provided with the chassis 101.
The chassis 101 and the cross section of tube body 102 are in annular shape.
The outer surface of the tube body 102 is provided with polyurethane insulation coating.
The top of 102 outer wall of tube body is provided with protrusion 103.
The internal diameter of the tube body 102 is provided with internal thread 105.
The incident chamber 14 of the incidence chamber shell 12 is connected with the inner cavity of the bushing 11.
Internal thread, the pump body inlet tube 13 are provided with the both ends of the bushing 11 and the bushing 11
With the external screw thread for keeping the temperature and being provided with flanged fitting 10 and being adapted with the internal thread.
The bottom of the pump body 3 is provided with footing 5.
The drainage pipe includes drainage tube 6, the drainage bend pipe 8 and telescoping tube 9 being sequentially communicated, and the one of the drainage tube 6
The centre position of the diffuser 4 is held to be connected, one end of the drainage tube 6 is connected with the diffuser 4, described to stretch
One end of the draw 9 is connected with the incident pipeline.
Electrically operated valve 7 is provided between the drainage tube 6 and the drainage bend pipe 8, and the electrically operated valve 7 divides
The drainage tube 6 and the drainage bend pipe 8 are not connected.
Although be used more herein pump intake 1, pump discharge 2, pump body 3, diffuser 4, footing 5, drainage tube 6,
Electrically operated valve 7, drainage bend pipe 8, telescoping tube 9, pump body inlet tube 13,10 keep the temperature flanged fitting, chassis 101, tube body 102,
The terms such as protrusion 103, through hole 104, bushing 11, incident chamber shell 12, but it is not precluded from the possibility using other terms
Property.The use of these items is only for more easily describe and explain the essence of the present invention；It is construed as any type
Additional limitation is all disagreed with spirit of the present invention.
Specific embodiment described herein is only to spirit explanation for example of the invention.Technology belonging to the present invention is led
The technical staff in domain can do various modifications or additions to described specific embodiment or replace in a similar way
Generation, but without departing from spirit of the invention or beyond the scope of the appended claims.
Claims (9)
- A kind of 1. centrifugal pump of anti-cavitation, it is characterised in that：The centrifugal pump of the anti-cavitation includes pump body (3), insulation flange Pipe fitting (10) and induction apparatus, the induction apparatus are connected with the pump body (3) and insulation flanged fitting (10) respectively； Be provided with pump body inlet tube (13) and diffuser (4) on pump body (3), one end of the diffuser (4) and Pump body (3) is connected, and the other end of the diffuser (4) is provided with pump discharge (2), and the insulation flanged fitting (10) pump intake (1) is provided with；The induction apparatus includes drainage pipe and incident pipeline, wherein, the drainage pipe One end connect the diffuser (4), the other end connection incident pipeline；One end of the incidence pipeline connects the pump Body inlet tube (13), incident pipeline the other end connection it is described insulation flanged fitting (10), it is described incidence pipeline respectively with Pump body inlet tube (13) and insulation flanged fitting (10) are flexibly connected；The incidence pipeline includes bushing (11), incident chamber shell (12), the incidence chamber shell (12) and bushing (11) are provided with the bushing (11) It is connected, the incidence chamber shell (12) is fastened around on the bushing (11)；The drainage pipe and the incident chamber Shell (12) is connected；The insulation flanged fitting (10) includes chassis（101）And tube body（102）, tube body（102）Bottom weldering It is connected to chassis（101）Inner radius, the chassis（101）On be provided with through hole（104）；The tube body（102）Outer surface It is provided with polyurethane insulation coating.
- 2. the centrifugal pump of anti-cavitation according to claim 1, it is characterised in that：The chassis（101）And tube body（102）'s Cross section is in annular shape.
- 3. the centrifugal pump of anti-cavitation according to claim 1, it is characterised in that：The tube body（102）The top of outer wall is set It is equipped with protrusion（103）.
- 4. the centrifugal pump of anti-cavitation according to claim 1, it is characterised in that：The tube body（102）Internal diameter be provided with Internal thread（105）.
- 5. the centrifugal pump of anti-cavitation according to claim 1, it is characterised in that：The incident chamber of the incidence chamber shell (12) (14) inner cavity with the bushing (11) is connected.
- 6. the centrifugal pump of anti-cavitation according to claim 1, it is characterised in that：The both ends of the bushing (11) and institute State and internal thread is provided with bushing (11), set on the pump body inlet tube (13) and the insulation flanged fitting (10) There is the external screw thread being adapted with the internal thread.
- 7. the centrifugal pump of anti-cavitation according to claim 1, it is characterised in that：The pump body（3）Bottom be provided with Footing（5）.
- 8. the centrifugal pump of anti-cavitation according to claim 1, it is characterised in that：The drainage pipe includes what is be sequentially communicated Drainage tube (6), drainage bend pipe (8) and telescoping tube (9), the interposition of diffuser (4) described in one end of the drainage tube (6) Put and be connected, one end of the drainage tube (6) is connected with the diffuser (4), one end of the telescoping tube (9) with The incidence pipeline is connected.
- 9. according to the centrifugal pump of claim 1 to 8 any one of them anti-cavitation, it is characterised in that：The drainage tube (6) with Electrically operated valve (7) is provided between the drainage bend pipe (8), and the electrically operated valve (7) is respectively communicated with the drainage tube (6) and it is described drainage bend pipe (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711381160.5A CN108005908A (en) | 2017-12-20 | 2017-12-20 | A kind of centrifugal pump of anti-cavitation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711381160.5A CN108005908A (en) | 2017-12-20 | 2017-12-20 | A kind of centrifugal pump of anti-cavitation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108005908A true CN108005908A (en) | 2018-05-08 |
Family
ID=62060108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711381160.5A Pending CN108005908A (en) | 2017-12-20 | 2017-12-20 | A kind of centrifugal pump of anti-cavitation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108005908A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024073943A1 (en) * | 2022-10-08 | 2024-04-11 | 利欧集团浙江泵业有限公司 | Vertical self-priming pump structure having both cavitation and hydraulic properties |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1740574A (en) * | 2005-08-19 | 2006-03-01 | 浙江大学 | Ejector capable of raising the cavitation performance of centrifugal pump |
| CN105090044A (en) * | 2014-11-21 | 2015-11-25 | 衢州学院 | Centrifugal pump |
| CN204900269U (en) * | 2015-07-15 | 2015-12-23 | 浙江远邦流体科技有限公司 | From steady current pump device of pressure boost |
| CN106837887A (en) * | 2017-03-14 | 2017-06-13 | 浙江理工大学 | The liquid ejection device of injection Parameter adjustable |
-
2017
- 2017-12-20 CN CN201711381160.5A patent/CN108005908A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1740574A (en) * | 2005-08-19 | 2006-03-01 | 浙江大学 | Ejector capable of raising the cavitation performance of centrifugal pump |
| CN105090044A (en) * | 2014-11-21 | 2015-11-25 | 衢州学院 | Centrifugal pump |
| CN204900269U (en) * | 2015-07-15 | 2015-12-23 | 浙江远邦流体科技有限公司 | From steady current pump device of pressure boost |
| CN106837887A (en) * | 2017-03-14 | 2017-06-13 | 浙江理工大学 | The liquid ejection device of injection Parameter adjustable |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024073943A1 (en) * | 2022-10-08 | 2024-04-11 | 利欧集团浙江泵业有限公司 | Vertical self-priming pump structure having both cavitation and hydraulic properties |
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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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180508 |
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| RJ01 | Rejection of invention patent application after publication |