CN106762808A - A kind of big flow is high-lift to draw wear-resisting choma of yellow centrifugal water pump and preparation method thereof - Google Patents
A kind of big flow is high-lift to draw wear-resisting choma of yellow centrifugal water pump and preparation method thereof Download PDFInfo
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- CN106762808A CN106762808A CN201710177040.7A CN201710177040A CN106762808A CN 106762808 A CN106762808 A CN 106762808A CN 201710177040 A CN201710177040 A CN 201710177040A CN 106762808 A CN106762808 A CN 106762808A
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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
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
- F04D29/2205—Conventional flow pattern
- F04D29/2222—Construction and assembly
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/06—Metallic material
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/18—After-treatment
-
- 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
- F04D29/02—Selection of particular materials
- F04D29/026—Selection of particular materials 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
- F04D29/2222—Construction and assembly
- F04D29/2227—Construction and assembly for special materials
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2300/00—Materials; Properties thereof
- F05D2300/10—Metals, alloys or intermetallic compounds
- F05D2300/17—Alloys
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2300/00—Materials; Properties thereof
- F05D2300/10—Metals, alloys or intermetallic compounds
- F05D2300/17—Alloys
- F05D2300/171—Steel alloys
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2300/00—Materials; Properties thereof
- F05D2300/20—Oxide or non-oxide ceramics
- F05D2300/22—Non-oxide ceramics
- F05D2300/226—Carbides
- F05D2300/2263—Carbides of tungsten, e.g. WC
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2300/00—Materials; Properties thereof
- F05D2300/40—Organic materials
- F05D2300/43—Synthetic polymers, e.g. plastics; Rubber
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention discloses that a kind of big flow is high-lift to draw wear-resisting choma of yellow centrifugal water pump and preparation method thereof, according to water pump stomodaeum ring size, raw water pump choma is transformed, it is preferred that the excellent polyurethane material of anti-erosion performance, embedded expanded metal lath increases the integral rigidity and adhesive strength of structure, processes the outer choma of steel plastic compount polyurethane；Using hard alloy thick film by coating technique, water pump tungsten carbide inner wear ring is produced.Choma is used cooperatively inside and outside water pump, compared with ordinary carbon steel choma, its wearability and service life improve more than 5 times, effectively prevent liquid from flowing to low-pressure area from higher-pressure region in large quantities, ensure water pump longtime running in high efficient area, water in raising, reduces power consumption, so as to realize the purpose of pump energy saving synergy.
Description
Technical field
Draw yellow centrifugal water pump field the present invention relates to big flow is high-lift, and in particular to a kind of big flow is high-lift draw it is yellow from
Wear-resisting choma of edema with the heart involved pump and preparation method thereof.
Background technology
Though NORTHWEST CHINA drought area has the Yellow River to pass through, water low land is high, and people and animals' existence and agricultural production are received throughout the year
Threatened to serious water shortage.To solve grain-production water shortage problem, a large amount of big-and-middle-sized filling row pumping plants are built, and taken out from the Yellow River
Water carries out field irrigation and agricultural water, be the irrigated area masses shake off poverty and set out on the road to prosperity, the improvement of agro based economic development, ecological environment and rush
Enter social development and be made that huge contribution.
Water pump is subjected to Yellow River mud abrasion for a long time, causes the performance of over current component of water pump such as pump case, impeller and choma to be denuded serious, makes
Into pumping plant generally existing operational efficiency is low and the problems such as high energy consumption.A large amount of practical experiences are proved：Big flow is high-lift to raise yellow water pump
Choma between leakage loss, be cause water pump plot ratio decline principal element, be also cause pump efficiency decline it is basic because
Element.Comparison of ingredients is hard in Yellow River mud, and the metal hardness for manufacturing water pump is much smaller than grains of sand hardness, in lift premise higher
Under, sand erosion association cavitation, cavitation again unstable wear, so as to trigger serious erosion problem, high-velocity ＆ sediment-laden flow is to choma
Abrasion, and at the ring and impeller inlet and pump case phase mutual friction, cause metal surface protection layer to be washed, make pump efficiency
Decline serious.Test observation as shown by data：The new choma installed, after operation 4000h~5000h, the unilateral average mill of impeller peristoma
, more than 2mm, choma abraded depth is more than 3mm, or even perforation situation occurs for damage amount, under causing whole pumping station system diversion efficiency
Drop, increased power consumption；Once damage water leakage it is too big when, it is impossible to effectively upper water when will change, considerably increase pumping plant
Maintenance cost, and influence pumping plant water supply benefits and social benefit performance.
Therefore, it is necessary to solve the erosion problem of water pump choma, water on water pump is improved, reduce power consumption, realize water pump section
The target of energy synergy.
The content of the invention
The purpose of the present invention is directed to deficiency of the prior art, there is provided a kind of big flow is high-lift, and to draw yellow centrifugal water pump resistance to
Ground ring and preparation method thereof, compared with ordinary carbon steel choma, its wearability and service life can at least improve 5 times, effectively anti-
Only liquid flows to low-pressure area from higher-pressure region in large quantities, it is ensured that water pump longtime running in high efficient area, realizes pump energy saving synergy
Purpose.
To achieve the above object, the invention discloses following technical scheme：
A kind of big flow is high-lift to draw the wear-resisting choma of yellow centrifugal water pump, and notch is provided with raw water pump choma, is set in notch
There is the outer choma of water pump, the water pump inner wear ring coordinated with it is provided with the outer choma of water pump：
The outer choma of water pump includes expanded metal lath and elastomer, and expanded metal lath is welded and be embedded in elastomer side with raw water pump choma
Surface, the surface contacts with raw water pump choma inwall；
Water pump inner wear ring is tungsten carbide material, and surface is covered with carbide alloy of nickel-base layer；
The center line of the outer choma of water pump and water pump inner wear ring is consistent with impeller center line, water pump collar extension ring inner surface with
Water pump internal orifice ring outer surface is engaged.
Further, the outer choma of the water pump is the outer choma of steel plastic compount polyurethane water pump.
Further, the elastomer is anti scuffing polyurethane elastomer high.
Further, the notch is L-shaped.
Further, the notch is being provided with welding groove near impeller side.
It is the invention also discloses a kind of high-lift preparation method for drawing the wear-resisting choma of yellow centrifugal water pump of big flow including as follows
Step：
It is prepared by water pump inner wear ring：Using hard alloy thick film by coating technique, impeller peristoma tungsten carbide steel ring inner wear ring is prepared
Coating, specifically, hard alloy of the selection based on Ni-based, after adding boron and silicon, using thermal spraying apparatus by antifriction metal (AFM)
It is powder coated to complete the preliminarily forming of coating in workpiece surface, coating is heated to 1000-1050 DEG C afterwards, make coating and base
Form high-strength metallurgical between material to combine, it is ensured that coating subsequent mechanical does not fall off under processing and operating for a long time use；
It is prepared by the outer choma of water pump：Selection is suitable for the polyurethane elastomeric materials of hydraulic engineering as the main of the outer choma of water pump
Material, makes cast grinding tool and is assemblied in raw water pump choma inwall, and expanded metal lath is welded on raw water pump choma inwall, cast polyurethane
Elastomeric material, completes grinding tool and installs, and carries out anti scuffing polyurethane vacuum pouring high, and solidification, the demoulding, reparation form steel plastic compount
Outer choma；
Water pump inner wear ring and the outer choma assembling of water pump：The outer choma of the steel plastic compount polyurethane wear resistant being poured in will be poured according to water pump
Internal orifice ring size and installation gap, by the way of machining, are processed into be suitable for the chi that the outer choma of water pump is installed
It is very little, then it is mounted to pumping plant.
Further, when prepared by the water pump inner wear ring, coating is heated using low frequency vortex.
Further, the polyurethane elastomeric materials are tetrahydrofuran polyether type polyurethane elastomeric material.
A kind of big flow disclosed by the invention is high-lift to draw wear-resisting choma of yellow centrifugal water pump and preparation method thereof, with following
Beneficial effect：
(1) water pump vane inner wear ring and outer choma, are respectively adopted the tungsten carbide material and anti-cavitation performance of high abrasion resistance
Excellent polyurethane material is processed, and rationally make use of the anti-erosion performance of material, and water pump choma has been significantly increased
Wearability and service life.
(2) the outer choma manufacture craft of anti scuffing steel plastic compount polyurethane high is simple, according to water pump choma size design mould
It is processed, is adapted to mass transformation processing, is the recycling to the choma scrapped.
(3) tungsten carbide inner wear ring prepares tungsten carbide coating using the excellent carbide alloy of nickel-base of abrasion resistance, and by low
Frequency eddy heating for heating is combined formation high-strength metallurgical between coating and base material, is adapted to mass production processing.
(4) inside and outside choma cooperate, couple hardness with softness, not only anti scuffing high again ensure pump efficiency for a long time it is steady in high efficient area
Fixed operation, reaches the purpose of pump energy saving synergy.
Brief description of the drawings
Fig. 1 is water pump vane structural representation of the present invention；
Fig. 2 is the sectional view of Fig. 1；
Fig. 3 is the partial enlarged drawing of Fig. 2；
Fig. 4 is the top view of tungsten carbide inner wear ring；
Fig. 5 is the sectional view of tungsten carbide inner wear ring；
Fig. 6 is Fig. 4 partial enlarged drawings；
Fig. 7 is the top view of the outer choma of steel plastic compount polyurethane；
Fig. 8 is the sectional view of the outer choma of steel plastic compount polyurethane；
Fig. 9 is the partial enlarged drawing of Fig. 7.
In figure：1- water pump vane bodies；2- water pump vane peristomas；3- raw water pump chomas；The outer choma of 4- water pumps；In 5- water pumps
Choma；6- carbide alloy of nickel-base layer；7- expanded metal laths；8- elastomers.
Specific embodiment
The technical scheme in the embodiment of the present invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, this area is common
The every other embodiment that technical staff is obtained under the premise of creative work is not made, belongs to the model of present invention protection
Enclose.
Core of the invention is to provide that a kind of big flow is high-lift to draw wear-resisting choma of yellow centrifugal water pump and preparation method thereof, with
Ordinary carbon steel choma is compared, and its wearability and service life can at least improve 5 times, effectively prevents liquid from being flowed from higher-pressure region in large quantities
To low-pressure area, it is ensured that water pump longtime running in high efficient area, the purpose of pump energy saving synergy is realized.
Refer to Fig. 1-Fig. 9.
A kind of big flow is high-lift to draw the wear-resisting choma of yellow centrifugal water pump, and notch is provided with raw water pump choma 3, is set in notch
There is the outer choma 4 of water pump, the water pump inner wear ring 5 coordinated with it is provided with the outer choma 4 of water pump：
The outer choma 4 of water pump includes expanded metal lath 7 and elastomer 8, and expanded metal lath 7 is welded and be embedded in elasticity with raw water pump choma 3
The side surface of body 8 one, the surface contacts with the inwall of raw water pump choma 3；
Water pump inner wear ring 5 is tungsten carbide material, and surface is covered with carbide alloy of nickel-base layer 6；
The center line of the outer choma 4 of water pump and water pump inner wear ring 5 is consistent with impeller center line, table in the outer choma 4 of water pump
Face and the outer surface of water pump inner wear ring 5 are engaged, and greatly improve the wearability and service life of water pump choma.
In an embodiment of the present invention, the outer choma 4 of the water pump is the outer choma of steel plastic compount polyurethane water pump, steel modeling
Composite construction can increase structural integrity and intensity.
In an embodiment of the present invention, the elastomer 8 is anti scuffing polyurethane elastomer high, and the material is suitable for
Term underwater works, and with elasticity higher and intensity and excellent water resistance, wearability, oil resistivity, endurance, resistance to tears
Split and anti-vibration resistance.
In an embodiment of the present invention, the notch is L-shaped.
In an embodiment of the present invention, the notch is being provided with welding groove near impeller side, by tungsten carbide
Choma carries out welded and installed with impeller.
It is the invention also discloses a kind of high-lift preparation method for drawing the wear-resisting choma of yellow centrifugal water pump of big flow including as follows
Step：
It is prepared by water pump inner wear ring 5：Using hard alloy thick film by coating technique, impeller peristoma tungsten carbide steel ring inner wear ring is prepared
Coating, specifically, hard alloy of the selection based on Ni-based, after adding boron and silicon, using thermal spraying apparatus by antifriction metal (AFM)
It is powder coated to complete the preliminarily forming of coating in workpiece surface, coating is heated to 1000-1050 DEG C afterwards, make coating and base
Form high-strength metallurgical between material to combine, it is ensured that coating subsequent mechanical does not fall off under processing and operating for a long time use, passes through
There are the trickle hard particles of a large amount of uniformly dispersings, coating hardness in coating structure tool obdurability after high-temperature process, interior tissue
Up to more than HRC58, make coating that there is good wear-resisting, resistance to cavitation performance；
It is prepared by the outer choma 4 of water pump：Selection is suitable for the polyurethane elastomeric materials of hydraulic engineering as the master of the outer choma 4 of water pump
Material is wanted, cast grinding tool is made and is assemblied in the inwall of raw water pump choma 3, expanded metal lath 7 is welded on the inwall of raw water pump choma 3, cast
Polyurethane elastomeric materials, complete grinding tool and install, and carry out anti scuffing polyurethane vacuum pouring high, and solidification, the demoulding, reparation form steel
Modeling is combined outer choma；
Water pump inner wear ring 5 and the outer choma 4 of water pump are assembled：The outer choma of the steel plastic compount polyurethane wear resistant being poured in will be poured according to water
Pump internal orifice ring size and installation gap, by the way of machining, are processed into be suitable for what the outer choma 4 of water pump was installed
Size, is then mounted to pumping plant.
In an embodiment of the present invention, when prepared by the water pump inner wear ring 5, coating is added using low frequency vortex
Heat.
In an embodiment of the present invention, the polyurethane elastomeric materials are the tetrahydrochysene furan for being very suitable for hydraulic engineering
Mutter EU elastomeric material, testing of materials shows that the material has that compliance is good, water resistance is strong, wear-resistant anti-cavitation performance
By force, the advantages of mechanical strength scope is wide, rebound performance is good.
The present invention is applied to northwest and raises yellow water pump in pump station choma wearing technic transformation.To having run a period of time (4000
~5000h) raise yellow water pump, choma abrasion seriously causes water pump efficiency to decline rapidly, the feelings for not carrying water often occurs
Condition, causes water supply strained relations, is unfavorable for irrigated area production and social stability.
Through lot of experiments, using advanced hard alloy thick film by coating technique, impeller peristoma tungsten carbide steel ring internal orifice is prepared
Ring coating, selects the hard alloy based on Ni-based, after adding appropriate boron, silicon and other elements, will using thermal spraying apparatus
Antifriction metal (AFM) is powder coated to complete the preliminarily forming of coating in workpiece surface, is afterwards heated coating using low frequency eddy heating for heating
To 1000~1050 DEG C, combined formation high-strength metallurgical between coating and base material, it is ensured that coating is processed and long in subsequent mechanical
Do not fallen off under phase operating use.Has obdurability by the coating structure after high-temperature process, interior tissue occurs a large amount of uniform
The trickle hard particles for spreading, coating hardness makes coating have good wear-resisting, resistance to cavitation performance up to more than HRC58.
It is preferred that going out to be very suitable for the tetrahydrofuran polyether type polyurethane elastomeric material of hydraulic engineering as the outer choma 4 of water pump
Main material, testing of materials shows that the material has that compliance is good, water resistance is strong, wear-resistant anti-cavitation performance is strong, mechanical strength model
The advantages of wide, rebound performance is good is enclosed, it is embedded in order to increase the rigidity and bonding strength with raw water pump choma 3 of polyurethane material
Expanded metal lath forms the outer choma of steel plastic compount.Manufacture craft is：Water pump choma after abrasion be machined → pour Mold Making and
Assembling → choma welding steel net → cast polyurethane elastomeric material → mould installion → anti scuffing polyurethane vacuum high pours →
Solidification → the demoulding → reparation → product.
As shown in Fig. 2 with reference to shown in Fig. 4 tungsten carbide inner wear ring size, the open loop shape square groove in water pump vane peristoma 2,
And near impeller side bevelling, the center line and water pump vane center line for noting annular square groove keep always.To add
The good tungsten carbide water pump inner wear ring 5 of work is attached in water pump peristoma annular square groove, is entered it with impeller peristoma by AC welding set
Row welding, is processed using machining mode afterwards, is allowed to meet the requirement of choma installation.
As shown in fig. 6, the outer choma 4 of the steel plastic compount polyurethane wear resistant that will be poured is according to internal orifice ring size and clipping room
Gap, by the way of machining, is processed into be suitable for the size that the outer choma of water pump is installed, and is then mounted to pump
Stand.
By the choma after installation, compared with ordinary carbon steel choma, its wearability and service life can at least improve 5 times, have
Effect prevents liquid from flowing to low-pressure area from higher-pressure region in large quantities, it is ensured that water pump longtime running in high efficient area, realizes pump energy saving
The purpose of synergy.
The above is only the preferred embodiment of the present invention, rather than its limitations；Although it should be pointed out that with reference to above-mentioned each
Embodiment has been described in detail to the present invention, it will be understood by those within the art that, it still can be to above-mentioned each
Technical scheme described in embodiment is modified, or carries out equivalent to which part or all technical characteristic；And this
A little modifications and replacement, do not make the scope of the essence disengaging various embodiments of the present invention technical scheme of corresponding technical scheme.
Claims (8)
1. a kind of big flow is high-lift draws the wear-resisting choma of yellow centrifugal water pump, it is characterised in that be provided with notch in raw water pump choma,
The outer choma of water pump is provided with notch, the water pump inner wear ring coordinated with it is provided with the outer choma of water pump：
The outer choma of water pump includes expanded metal lath and elastomer, and expanded metal lath is welded and be embedded in elastomer side table with raw water pump choma
Face, the surface contacts with raw water pump choma inwall；
Water pump inner wear ring is tungsten carbide material, and surface is covered with carbide alloy of nickel-base layer；
The center line of the outer choma of water pump and water pump inner wear ring is consistent with impeller center line, water pump collar extension ring inner surface and water pump
Internal orifice ring outer surface is engaged.
2. a kind of big flow according to claim 1 is high-lift draws the wear-resisting choma of yellow centrifugal water pump, it is characterised in that described
The outer choma of water pump is the outer choma of steel plastic compount polyurethane water pump.
3. a kind of big flow according to claim 1 is high-lift draws the wear-resisting choma of yellow centrifugal water pump, it is characterised in that described
Elastomer is anti scuffing polyurethane elastomer high.
4. a kind of big flow according to claim 1 is high-lift draws the wear-resisting choma of yellow centrifugal water pump, it is characterised in that described
Notch is L-shaped.
5. a kind of big flow according to claim 4 is high-lift draws the wear-resisting choma of yellow centrifugal water pump, it is characterised in that described
Notch is being provided with welding groove near impeller side.
6. the high-lift preparation method for drawing the wear-resisting choma of yellow centrifugal water pump of a kind of big flow, it is characterised in that comprise the following steps：
It is prepared by water pump inner wear ring：Using hard alloy thick film by coating technique, impeller peristoma tungsten carbide steel ring inner wear ring coating is prepared,
Specifically, hard alloy of the selection based on Ni-based, after adding boron and silicon, is applied antifriction metal (AFM) powder using thermal spraying apparatus
Workpiece surface is distributed in, the preliminarily forming of coating is completed, coating is heated to 1000-1050 DEG C afterwards, made between coating and base material
Form high-strength metallurgical to combine, it is ensured that coating subsequent mechanical does not fall off under processing and operating for a long time use；
It is prepared by the outer choma of water pump：Selection is suitable for the polyurethane elastomeric materials of hydraulic engineering as the main material of the outer choma of water pump
Material, makes cast grinding tool and is assemblied in raw water pump choma inwall, and expanded metal lath is welded on raw water pump choma inwall, cast polyurethane bullet
Property material, completing grinding tool installs, and carries out anti scuffing polyurethane vacuum pouring high, solidification, the demoulding, reparation, outside formation steel plastic compount
Choma；
Water pump inner wear ring and the outer choma assembling of water pump：The outer choma of the steel plastic compount polyurethane wear resistant being poured in will be poured according to water pump internal orifice
Ring size and installation gap, by the way of machining, are processed into be suitable for the size that the outer choma of water pump is installed, so
After be mounted to pumping plant.
7. the high-lift preparation method for drawing the wear-resisting choma of yellow centrifugal water pump of a kind of big flow according to claim 6, it is special
Levy and be, when prepared by the water pump inner wear ring, coating is heated using low frequency vortex.
8. the high-lift preparation method for drawing the wear-resisting choma of yellow centrifugal water pump of a kind of big flow according to claim 6, it is special
Levy and be, the polyurethane elastomeric materials are tetrahydrofuran polyether type polyurethane elastomeric material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710177040.7A CN106762808B (en) | 2017-03-22 | 2017-03-22 | High-flow high-lift yellow-leading centrifugal water pump wear-resistant opening ring and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710177040.7A CN106762808B (en) | 2017-03-22 | 2017-03-22 | High-flow high-lift yellow-leading centrifugal water pump wear-resistant opening ring and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN106762808A true CN106762808A (en) | 2017-05-31 |
| CN106762808B CN106762808B (en) | 2023-04-07 |
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|---|---|---|---|
| CN201710177040.7A Active CN106762808B (en) | 2017-03-22 | 2017-03-22 | High-flow high-lift yellow-leading centrifugal water pump wear-resistant opening ring and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110185652A (en) * | 2019-06-18 | 2019-08-30 | 泰州市罡阳喷灌机有限公司 | A kind of wear-resisting choma production method of liquid-ring type self priming pump |
| CN111677686A (en) * | 2020-06-03 | 2020-09-18 | 黄河水利委员会黄河水利科学研究院 | Wear-resistant mouth ring of centrifugal water pump and preparation method thereof |
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| WO1993006255A1 (en) * | 1991-09-16 | 1993-04-01 | Technogenia | Method for making a composite part with an antiabrasion surface, and parts obtained by such method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110185652A (en) * | 2019-06-18 | 2019-08-30 | 泰州市罡阳喷灌机有限公司 | A kind of wear-resisting choma production method of liquid-ring type self priming pump |
| CN111677686A (en) * | 2020-06-03 | 2020-09-18 | 黄河水利委员会黄河水利科学研究院 | Wear-resistant mouth ring of centrifugal water pump and preparation method thereof |
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|---|---|
| CN106762808B (en) | 2023-04-07 |
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Inventor after: Chen Bo Inventor after: Wen Hongpu Inventor after: Zhang Yin Inventor after: Li Yandi Inventor after: Yan Li Inventor after: Yu Zhenzhen Inventor after: Guo Weike Inventor after: Deng Yan Inventor after: Zhang Lei Inventor after: Yang Yong Inventor after: Li Guixun Inventor after: Deng Bin Inventor after: Zheng Jun Inventor after: Xi Yingsheng Inventor after: Qiu Yongguang Inventor before: Zhang Lei Inventor before: Guo Weike Inventor before: Yang Yong Inventor before: Li Guixun Inventor before: Zheng Jun Inventor before: Wen Hongpu Inventor before: Zhang Yin Inventor before: Li Yandi Inventor before: Yan Li Inventor before: Yu Zhenzhen |
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Effective date of registration: 20171204 Address after: 848000 the Xinjiang Uygur Autonomous Region Hotan Hotan County Kashi Township cheuck hydropower station during the Applicant after: XINJIANG HUADIAN HETIAN HYDROPOWER CO.,LTD. Applicant after: YELLOW RIVER INSTITUTE OF HYDRAULIC RESEARCH Address before: 450000 Henan province Zhengzhou City Road No. 45 Applicant before: YELLOW RIVER INSTITUTE OF HYDRAULIC RESEARCH |
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