CN108757475A - A kind of large flow single-stage double-suction centrifugal pump slag flushing pump - Google Patents
A kind of large flow single-stage double-suction centrifugal pump slag flushing pump Download PDFInfo
- Publication number
- CN108757475A CN108757475A CN201810506770.1A CN201810506770A CN108757475A CN 108757475 A CN108757475 A CN 108757475A CN 201810506770 A CN201810506770 A CN 201810506770A CN 108757475 A CN108757475 A CN 108757475A
- Authority
- CN
- China
- Prior art keywords
- pump
- impeller
- large flow
- slag flushing
- suction centrifugal
- 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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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
- F04D1/006—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps double suction pumps
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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
- F04D29/00—Details, component parts, or accessories
- F04D29/04—Shafts or bearings, or assemblies thereof
-
- 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
- F04D29/08—Sealings
- F04D29/10—Shaft sealings
- F04D29/106—Shaft sealings 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
- F04D29/08—Sealings
- F04D29/10—Shaft sealings
- F04D29/12—Shaft sealings using sealing-rings
- F04D29/126—Shaft sealings using sealing-rings 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
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
- F04D29/2205—Conventional flow pattern
- F04D29/2216—Shape, geometry
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a kind of large flow single-stage double-suction centrifugal pump slag flushing pumps, including impeller, pump shaft, pump case, pump shaft passes through the both sides of pump case, impeller is located in pump case and is socketed on pump shaft by impeller key, pump case is double-volute structure, it is provided with the impeller blade of eight arrangements in a center of symmetry on impeller, the impeller water outlet of sharp-crested shape is provided between two of which impeller blade.It solves that centrifugal pump of single stage type flushing cinder pump volume existing in the prior art is big, flow is small, the waste residue of large volume and weight is caused to rush sordid problem.
Description
Technical field
The invention belongs to double suction pump technical fields, are related to a kind of large flow single-stage double-suction centrifugal pump slag flushing pump.
Background technology
Single-stage double-entry centrifugal slag flushing pump is used as steam power plant, chemical industry mostly, and the medium of conveying is largely seawater, cycle
Water, outlet pressure are higher.
Slag flushing pump is to provide the pressure water of flushing cinder and is pumped so that waste residue to be flushed to a kind of liquid of grey slag bath along grey ditch.Generally
Using centrifugal pump of single stage type.The one kind of slag-washing-out pump as water sluice equipment, it is cold from burner hearth after fuel combustion the purpose is to remove
The fine ash that clinker that ash bucket excludes, the flying dust that falls of flue ash bucket and deduster separate and collect, and by Ash water to ash field.Ring
It protects equipment and has become an essential infrastructure in contemporary China's industrial development, haze is controlled for environmental protection, except haze
It plays a crucial role.Especially to the industrial circles high energy-consuming enterprises such as steam power plant, steel, coloured, petrochemical industry, water process
Stringenter emission reduction, environmental objective are proposed, so the improvement and development of slag flushing pump are to be conducive to current industrial production, to protecting
There is great meaning in retaining ring border.
Currently used one-stage centrifugal slag flushing pump there are volumes big, the small defect of flow leads to the useless of large volume and weight
Slag punching is not clean.
Invention content
The object of the present invention is to provide a kind of large flow single-stage double-suction centrifugal pump slag flushing pumps, solve existing in the prior art
Centrifugal pump of single stage type flushing cinder pump volume is big, flow is small, and the waste residue of large volume and weight is caused to rush sordid problem.
The technical solution adopted in the present invention is a kind of large flow single-stage double-suction centrifugal pump slag flushing pump, including impeller, pump shaft,
Pump case, pump shaft pass through the both sides of pump case, impeller to be located in pump case and be socketed on pump shaft by impeller key, and pump case is double volute knot
Structure is provided with the impeller blade of eight arrangements in a center of symmetry on impeller, the leaf of sharp-crested shape is provided between two of which impeller blade
Take turns water outlet.
Axle sleeve is provided on pump shaft with the junction of pump case, is sealed by oil stain asbestos packing on the excircle of axle sleeve, oil
Stain asbestos packing is internally provided with packing ring, and filler set and filler pressure are respectively arranged with inside and outside oil stain asbestos packing
Lid.
The features of the present invention also characterized in that
Left bearing and right bearing are connected separately with by bearing nut on the pump shaft of pump case both sides, outside left bearing and right bearing
Left axle pressure cap and right axle pressure cap has been bolted in portion respectively, and left bearing and the junction of right bearing and pump shaft are provided with
Spacer sleeve.
Choma is provided on pump housing endophragm with the contact position of impeller, choma is connect by pin with pump case.
One end of pump shaft is by being keyed flexible shaft coupling.
The invention has the advantages that
1. a kind of large flow single-stage double-suction centrifugal pump slag flushing pump of the present invention increases the capacity of pump using double-volute structure, narrow
Small outlet increases the pressure of pump discharge so that this pumps the waste residue that can go out more volume and weight；
2. a kind of large flow single-stage double-suction centrifugal pump slag flushing pump of the present invention, impeller use the impeller of eight arrangements in a center of symmetry
Piece adds the tip design of impeller water outlet so that this flushing cinder by the particular form of increase and the arrangement of impeller blade quantity
The lift of pump and the pressure of outlet greatly increase, and for waste residue not of uniform size, play the role of effective cleaning；
3. a kind of large flow single-stage double-suction centrifugal pump slag flushing pump of the present invention, axle envelope are combined using mechanical seal with packing seal,
Sealing effect is good, effective protection main shaft, ensures pump shaft normal work, good leakproofness, makes that its is compact-sized, it is easy to pollute not allow
Environment, while by improving filler position, making this pump that can not only be sealed with machine, but also material can be loaded, need not frequently replace pump casing cover；
4. a kind of large flow single-stage double-suction centrifugal pump slag flushing pump of the present invention, sealing material oil immersion asbestos packing F13's uses temperature
Degree：- 20-280 DEG C, there is very extensive temperature tolerance, be that a kind of performance is stable, packing of service life length, it is ensured that high temperature,
The sealing pumped under high pressure, corrosion-resistant medium is still normal；
5. a kind of large flow single-stage double-suction centrifugal pump slag flushing pump of the present invention, choma has been used in the position of impeller institute installation axle,
Narrow, tortuous channel is formed between impeller and pump case, increases the flow resistance of medium, and dielectric leakage is reduced to reach
The setting of purpose, choma also acts as the not frayed effect of the upper major part of protection pump, has preferably effect relative to drag ring
Fruit.
6. a kind of large flow single-stage double-suction centrifugal pump slag flushing pump of the present invention can make knot under the premise of ensureing job requirement
Structure advantages of simple so that installation, maintenance, renewal part simple and convenient；Its sealing performance is improved, extend slag flushing pump uses the longevity
Life.
Description of the drawings
Fig. 1 is a kind of structure chart of large flow single-stage double-suction centrifugal pump slag flushing pump of the present invention；
Fig. 2 is a kind of structure chart of large flow single-stage double-suction centrifugal pump flushing cinder impeller of pump of the present invention.
In figure, 1. elastic couplings, 2. keys, 3. bearing nuts, 4. right bearings, 5. right axle pressure caps, 6. spacer sleeves, 7. axis
Set, 8. oil stain asbestos packings, 9. packing rings, 10. chomas, 11. impeller keys, 12. impellers, 13. pump shafts, 14. filler sets, 15. fill out
Expect gland, 16. left axle pressure caps, 17. left bearings, 18. pump cases, 19. pins, 2. impeller blades, 21. impeller water outlets.
Specific implementation mode
The following describes the present invention in detail with reference to the accompanying drawings and specific embodiments.
A kind of large flow single-stage double-suction centrifugal pump slag flushing pump of the present invention, structure is as depicted in figs. 1 and 2, including impeller 12, pump shaft
13, pump case 18, pump shaft 13 pass through the both sides of pump case 18, impeller 12 to be located in pump case 18 and be socketed in pump shaft 13 by impeller key 11
On, pump case 18 is double-volute structure, and the impeller blade 20 of eight arrangements in a center of symmetry, two of which impeller are provided on impeller 12
The impeller water outlet 21 of sharp-crested shape is provided between piece 20.
Axle sleeve 7 is provided on pump shaft 13 with the junction of pump case 18, passes through oil stain asbestos packing 8 on the excircle of axle sleeve 7
Sealing, oil stain asbestos packing 8 are internally provided with packing ring 9, filler set are respectively arranged with inside and outside oil stain asbestos packing 8
14 and gland 15, the temperature in use of oil immersion asbestos packing be：- 20-280 DEG C, there is very extensive temperature tolerance, be a kind of property
It can stablize, the packing of service life length, it is ensured that the sealing still normal use pumped under high temperature, high pressure, corrosion-resistant medium.
Left bearing 17 and right bearing 4, left bearing 17 are connected separately with by bearing nut 3 on the pump shaft 13 of 18 both sides of pump case
Be bolted left axle pressure cap 16 and right axle pressure cap 5 outside right bearing 4 respectively, left bearing 17 and right bearing 4 with
The junction of pump shaft 13 is provided with spacer sleeve 6, and left axle pressure cap 16 and right axle pressure cap 5 are used for the axially position of bearing, and
Ensure enough centering precisions, ensures that the normal running conditions of bearing, spacer sleeve 6 mainly play positioning and clamping action.
Choma 10 is provided on 18 inner wall of pump case with the contact position of impeller 12, choma 10 is connect by pin 19 with pump case 18,
The effect of choma 10 be prevent outlet end medium from flowing back to input end medium i.e. sealing function, while also serve it is wear-resisting,
It avoids the inner wall of impeller 12 and pump case 18 from being in direct contact to damage, has the function of protecting impeller 12.
One end of pump shaft 13 is connected with elastic coupling 1 by key 2, and the effect of elastic coupling 1 is for connection to driven
Axis and driving shaft simultaneously transmit torque, the kinetic energy on motor are passed to pump shaft 13, and elastic coupling 1 can buffer absorbing,
Larger axial displacement is compensated, micro radial displacement and angular displacement ensure the steady operation of machine.
A kind of large flow single-stage double-suction centrifugal pump slag flushing pump of the present invention, impeller 12 is mounted in pump case 18, and is fastened on pump shaft
On 13, kinetic energy torque is passed to pump shaft 13 by motor by elastic coupling 1, to which impeller 12 carries out rotation work.Pump
18 center of shell has a fluid intake to enter so as to liquid, and before pump startup, pump case 18 needs that diversion, after startup, liquid is added
Enter suction chamber from intake line, impeller 12 is then entered by the suction inlet of 12 both sides of impeller, after starting motor, motor passes through
13 impeller 12 of pump shaft rotates, the liquid in impeller 12 with 12 high speed rotation of impeller, liquid in impeller 12 due to by
Impeller water outlet 21 is thrown toward by the runner of impeller blade 20 to the effect of centrifugal force, liquid is after spiral case is collected through room is discharged
It is sent into discharge pipe.During pump work, liquid obtains energy from impeller 12, and pressure energy and speed is enable to increase, and according to
Liquid is transported to job site by this energy.While liquid is thrown toward impeller water outlet 21, shape at impeller eye center
At low pressure, pressure difference is just produced at imbibition tank and impeller center, the liquid in imbibition tank is under this differential pressure action, through inhaling
The suction chamber for entering pipeline and pump enters in impeller 12, and liquid is to first pass through the suction inlets of impeller both sides to enter impeller 12 again, then
Impeller water outlet 21 is thrown toward from 20 runner of impeller blade, liquid is finally again in the impeller 12 of high-speed rotation by centrifugation force effect
It is admitted to discharge pipe discharge.So as long as impeller 12 constantly rotates, liquid constantly will be inhaled into and be discharged, and so follow
Ring goes down, and the liquid being discharged in slag flushing pump constantly washes away waste residue, can reach the work purpose of slag flushing pump.
Claims (5)
1. a kind of large flow single-stage double-suction centrifugal pump slag flushing pump, including impeller (12), pump shaft (13), pump case (18), which is characterized in that
The pump shaft (13) passes through the both sides of pump case (18), the impeller (12) to be located in pump case (18) and be socketed by impeller key (11)
On pump shaft (13), the pump case (18) is double-volute structure, and eight arrangements in a center of symmetry are provided on the impeller (12)
Impeller blade (20), the impeller water outlet (21) of sharp-crested shape is provided between impeller blade (20) described in two of which.
2. a kind of large flow single-stage double-suction centrifugal pump slag flushing pump according to claim 1, which is characterized in that the pump shaft (13)
Upper and pump case (18) junction is provided with axle sleeve (7), close by oil stain asbestos packing (8) on the excircle of the axle sleeve (7)
Envelope, the oil stain asbestos packing (8) are internally provided with packing ring (9), distinguish inside and outside the oil stain asbestos packing (8)
It is provided with filler set (14) and gland (15).
3. a kind of large flow single-stage double-suction centrifugal pump slag flushing pump according to claim 1, which is characterized in that the pump case (18)
Left bearing (17) and right bearing (4), the left bearing (17) are connected separately with by bearing nut (3) on the pump shaft (13) of both sides
Left axle pressure cap (16) and right axle pressure cap (5), the left bearing (17) have been bolted respectively with right bearing (4) outside
The junction of right bearing (4) and pump shaft (13) is provided with spacer sleeve (6).
4. a kind of large flow single-stage double-suction centrifugal pump slag flushing pump according to claim 1, which is characterized in that the pump case (18)
Choma (10) is provided on inner wall with the contact position of impeller (12), the choma (10) is connect by pin (19) with pump case (18).
5. a kind of large flow single-stage double-suction centrifugal pump slag flushing pump according to claim 1, which is characterized in that the pump shaft (13)
One end elastic coupling (1) is connected with by key (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810506770.1A CN108757475A (en) | 2018-05-24 | 2018-05-24 | A kind of large flow single-stage double-suction centrifugal pump slag flushing pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810506770.1A CN108757475A (en) | 2018-05-24 | 2018-05-24 | A kind of large flow single-stage double-suction centrifugal pump slag flushing pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108757475A true CN108757475A (en) | 2018-11-06 |
Family
ID=64005319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810506770.1A Pending CN108757475A (en) | 2018-05-24 | 2018-05-24 | A kind of large flow single-stage double-suction centrifugal pump slag flushing pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108757475A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201599245U (en) * | 2009-10-30 | 2010-10-06 | 杭州萧山美特轻工机械有限公司 | Two-flow-direction blade staggered type closed impeller |
| CN202418011U (en) * | 2011-12-22 | 2012-09-05 | 四川三台力达泵业有限公司 | Axially split pump for general-purpose pump shaft |
| CN203685691U (en) * | 2014-01-23 | 2014-07-02 | 上海奥利泵业制造有限公司 | Total-lift double suction pump |
| CN204900265U (en) * | 2015-07-07 | 2015-12-23 | 四川新达泵业有限责任公司 | Single -stage double suction split case pump |
-
2018
- 2018-05-24 CN CN201810506770.1A patent/CN108757475A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201599245U (en) * | 2009-10-30 | 2010-10-06 | 杭州萧山美特轻工机械有限公司 | Two-flow-direction blade staggered type closed impeller |
| CN202418011U (en) * | 2011-12-22 | 2012-09-05 | 四川三台力达泵业有限公司 | Axially split pump for general-purpose pump shaft |
| CN203685691U (en) * | 2014-01-23 | 2014-07-02 | 上海奥利泵业制造有限公司 | Total-lift double suction pump |
| CN204900265U (en) * | 2015-07-07 | 2015-12-23 | 四川新达泵业有限责任公司 | Single -stage double suction split case pump |
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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: 20181106 |
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| RJ01 | Rejection of invention patent application after publication |