CN109578322A - A kind of wear resistant corrosion resistant centrifugation impeller of pump - Google Patents

A kind of wear resistant corrosion resistant centrifugation impeller of pump Download PDF

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Publication number
CN109578322A
CN109578322A CN201811629876.7A CN201811629876A CN109578322A CN 109578322 A CN109578322 A CN 109578322A CN 201811629876 A CN201811629876 A CN 201811629876A CN 109578322 A CN109578322 A CN 109578322A
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CN
China
Prior art keywords
resistant
wear
corrosion
blade
wheel disc
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
Application number
CN201811629876.7A
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Chinese (zh)
Inventor
吴辉
王清龙
汪云
唐宗清
孟金华
王文汇
徐俊东
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
YINLONG PUMP AND VALVE CO LDT ANHUI PROV
Original Assignee
YINLONG PUMP AND VALVE CO LDT ANHUI PROV
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by YINLONG PUMP AND VALVE CO LDT ANHUI PROV filed Critical YINLONG PUMP AND VALVE CO LDT ANHUI PROV
Priority to CN201811629876.7A priority Critical patent/CN109578322A/en
Publication of CN109578322A publication Critical patent/CN109578322A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/18Rotors
    • F04D29/22Rotors specially for centrifugal pumps
    • F04D29/2205Conventional flow pattern
    • F04D29/2222Construction and assembly
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/02Ferrous alloys, e.g. steel alloys containing silicon
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/04Ferrous alloys, e.g. steel alloys containing manganese
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/44Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/56Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.7% by weight of carbon
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/02Selection of particular materials
    • F04D29/026Selection of particular materials especially adapted for liquid pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/18Rotors
    • F04D29/22Rotors specially for centrifugal pumps
    • F04D29/2261Rotors specially for centrifugal pumps with special measures
    • F04D29/2294Rotors specially for centrifugal pumps with special measures for protection, e.g. against abrasion
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/18Rotors
    • F04D29/22Rotors specially for centrifugal pumps
    • F04D29/24Vanes

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The present invention relates to a kind of wear resistant corrosion resistants to be centrifuged impeller of pump, including blade, wheel disc, front shroud and back shroud, blade is sheathed on the periphery of wheel disc, the root of front shroud and back shroud is fixedly mounted on wheel disc, and the plate face of front shroud and back shroud is covered on two middle side parts of blade respectively, front shroud and back shroud can play the role of reinforcement to blade, the wheel disc, front shroud and back shroud are all made of wear resistant alloy material and are fabricated, the blade is made using thyrite, in blade, wheel disc, the outer surface of front shroud and back shroud is covered with one layer of corrosion-resistant finishes.Simple and reasonable, easily fabricated, the operation is stable of this centrifugal pump impeller, and there is excellent wear-resistant and corrosion resistance, long service life.

Description

A kind of wear resistant corrosion resistant centrifugation impeller of pump
Technical field
The present invention relates to centrifugal pumping apparatus technical field more particularly to a kind of anti abrasive impellers for centrifugal pump.
Background technique
Centrifugal pump is widely used in chemical industry production, it is the pump for carrying out liquid by the centrifugal force generated when impeller rotation Valve, it can be seen that impeller is the core building block of centrifugal pump, and the quality of impeller determines the service performance and use of centrifugal pump Service life.The slurries that centrifugal pump is conveyed in the production environment of chemical industry there are very strong abrasion and corrosivity, impeller be by The part that slurries abrasion and vertical view are most concentrated.Traditional centrifugal pump impeller uses material for alloy cast iron, ceramics and polyurethane etc., Wherein, alloy cast iron impeller abrasion-proof is poor, and service life is shorter, and ceramic impeller is light-weight, and wearability is also compared with alloy cast iron Impeller it is strong, however since ceramics belong to brittle medium, be easy to be hit in installation and use process and fracture report occurs Useless, the wearability and corrosion resistance of polyurethane impeller are good compared with the above two impeller, however polyurethane impeller exists greatly in slurries When the medium of particle, it can will be scrapped by tearing in blocks because impeller is impacted by high stress.It can be seen that currently on the market from Heart pump blade wheel structure and material are unable to satisfy the property in chemical industry production to its wearability, corrosion resistance and workability etc. It can require, therefore need to research and develop a kind of impeller with stronger abrasion resistance properties to meet the actual needs of chemical industry production.
Summary of the invention
A kind of the purpose of the present invention is to provide structures anti abrasive centrifugal pump leaf simple, at low cost and easily manufactured Wheel.
To achieve the goals above, the technical solution adopted by the present invention is a kind of wear resistant corrosion resistant centrifugation impeller of pump, packet Blade, wheel disc, front shroud and back shroud are included, blade is sheathed on the periphery of wheel disc, the root fixed installation of front shroud and back shroud On wheel disc, and the plate face of front shroud and back shroud is covered on two middle side parts of blade respectively, and front shroud and back shroud can be right Blade plays the role of reinforcement, and the wheel disc, front shroud and back shroud are all made of wear resistant alloy material and are fabricated, the blade Be made using thyrite, the outer surface of blade, wheel disc, front shroud and back shroud be covered with one layer it is corrosion-resistant Coating.
As an improvement of the present invention, the wheel disc, front shroud and back shroud are wear-resisting using nickel-chrome-molybdenum alloy cast iron Any one of material, chromium carbide alloy wear-resistant material, nickel tungsten wear-resistant material and diamondite wear-resistant material production and At.
As an improvement of the present invention, the wheel disc, front shroud and back shroud are wear-resisting using nickel-chrome-molybdenum alloy cast iron Material is made.
As an improvement of the present invention, the constituent that the nickel-chrome-molybdenum alloy cast iron wear-resistant material includes are as follows: with matter Measure score meter, iron: 70-90%, nickel: 0.01-0.05%, chromium: 0.6-1.5%, molybdenum: 0.01-0.05%, carbon: 3-5%, manganese: 0.5- 1.5%, silicon: 0.5-1.5%.
As an improvement of the present invention, the corrosion-resistant finishes uses polyflon or perfluoroethylene-propylene Resin even application forms.
As an improvement of the present invention, the corrosion-resistant finishes for being set to wheel disc, front shroud and back shroud outer surface uses Exhaustive fluorinated ethylene propylene even application forms, corrosion-resistant finishes with a thickness of 3-5mm.
As an improvement of the present invention, the corrosion-resistant finishes for being set to blade outer surface is equal using polyflon It is even to spray, corrosion-resistant finishes with a thickness of 2-3mm.
Compared with the existing technology, centrifugal pump impeller overall construction design of the invention is ingenious, structurally reasonable stabilization, cost It is low, it is easily fabricated, it is covered in two middle side parts of blade by using front shroud and back shroud, plays the role of reinforcement to blade, The intensity and stiffness of ceramic blade are improved, effectively enhances the impact resistance of blade, and due to using wear resistant alloy material Manufacture wheel disc, front shroud and back shroud, effectively enhance the abrasion resistance properties of impeller, at the same be further disposed upon blade, wheel disc, Front shroud and the anti-corrosion layer of back shroud outer surface substantially increase the corrosion resistance of impeller, the overall structure leakproofness of impeller Can be tightly reliable, the operation is stable, long service life.
Specific embodiment
In order to deepen the understanding of the present invention and understanding, the invention will be further described combined with specific embodiments below and It introduces.
Embodiment 1
A kind of wear resistant corrosion resistant centrifugation impeller of pump, including blade, wheel disc, front shroud and back shroud, blade are sheathed on outside wheel disc In the mounting groove in week, the root of front shroud and back shroud is threadably secured in the mounting base being mounted on wheel disc, and preceding The plate face of cover board and back shroud is covered on two middle side parts of blade respectively, and front shroud and back shroud can play reinforcement to blade Effect, can improve the intensity of blade, so that it is effective against bulky grain medium in slurries to the percussion of blade, the wheel disc, Front shroud and back shroud are all made of wear resistant alloy material and are fabricated, and the blade is made using thyrite, Ceramic blade can anticorrosion, be covered with one layer of corrosion-resistant finishes in the outer surface of blade, wheel disc, front shroud and back shroud.
Wherein, the wheel disc, front shroud and back shroud are resistance to using nickel-chrome-molybdenum alloy cast iron wear-resistant material, chromium carbide alloy Any one of mill material, nickel tungsten wear-resistant material and diamondite wear-resistant material are made.Preferably, using nickel chromium triangle Molybdenum alloy cast iron wear-resistant material makes wheel disc, front shroud and the back shroud of impeller, specifically, the nickel-chrome-molybdenum alloy cast iron is wear-resisting The constituent that material includes are as follows: based on mass fraction, iron: 70-90%, nickel: 0.01-0.05%, chromium: 0.6-1.5%, molybdenum: 0.01-0.05%, carbon: 3-5%, manganese: 0.5-1.5%, silicon: 0.5-1.5%.As it can be seen that having used a small amount of nickel in the material component Chrome molybdenum, while manganese and silicon ingredient will be added, so that the working surface hardness of blade obtained up to HRC55-60, greatly strengthens The intensity of blade improves the service performance and service life of impeller.
In addition, the corrosion-resistant finishes is formed using polyflon or exhaustive fluorinated ethylene propylene even application. Wherein, the corrosion-resistant finishes of wheel disc, front shroud and back shroud outer surface is set to using exhaustive fluorinated ethylene propylene even application Form, corrosion-resistant finishes with a thickness of 3-5mm.And the corrosion-resistant finishes for being set to blade outer surface then uses polytetrafluoroethylene (PTFE) tree Rouge even application forms, corrosion-resistant finishes with a thickness of 2-3mm.The corrosion resistance of exhaustive fluorinated ethylene propylene is better than polytetrafluoro Therefore the corrosion resistance of vinyl is adopted wheel disc, front shroud and back shroud outer surface that wear resistant alloy material is fabricated The anti-corrosion layer that a layer thickness is 3-5mm is formed with exhaustive fluorinated ethylene propylene even application, is incorporated into ceramic blade outer surface The anti-corrosion layer that the polyflon even application used forms a layer thickness as 2-3mm, can effectively improve centrifugal pump leaf The corrosion resistance of wheel, while the corrosion-resistant service life of impeller can be also balanced, production cost is reduced, and realize preferable corrosion resistant Lose effect.
Embodiment 2
A kind of wear resistant corrosion resistant centrifugation impeller of pump, including blade, wheel disc, front shroud and back shroud, blade are sheathed on outside wheel disc In the mounting groove in week, the root of front shroud and back shroud is threadably secured in the mounting base being mounted on wheel disc, and preceding The plate face of cover board and back shroud is covered on two middle side parts of blade respectively, and front shroud and back shroud can play reinforcement to blade Effect, can improve the intensity of blade, so that it is effective against bulky grain medium in slurries to the percussion of blade, the wheel disc, Front shroud and back shroud are all made of wear resistant alloy material and are fabricated, and the blade is made using thyrite, Ceramic blade can anticorrosion, be covered with one layer of corrosion-resistant finishes in the outer surface of blade, wheel disc, front shroud and back shroud.
Wherein, using wheel disc, front shroud and the back shroud of nickel-chrome-molybdenum alloy cast iron wear-resistant material production impeller, specifically, The constituent that the nickel-chrome-molybdenum alloy cast iron wear-resistant material includes are as follows: based on mass fraction, iron: 70-90%, nickel: 0.01- 0.05%, chromium: 0.6-1.5%, molybdenum: 0.01-0.05%, carbon: 3-5%, manganese: 0.5-1.5%, silicon: 0.5-1.5%.As it can be seen that in the material A small amount of Ni-Cr-Mo has been used in component, while manganese and silicon ingredient will be added, so that the working surface hardness of blade obtained can Up to HRC55-60, the intensity of blade is greatly strengthened, improves the service performance and service life of impeller.
In addition, the corrosion-resistant finishes is formed using polyflon or exhaustive fluorinated ethylene propylene even application. Wherein, the corrosion-resistant finishes of wheel disc, front shroud and back shroud outer surface is set to using exhaustive fluorinated ethylene propylene even application Form, corrosion-resistant finishes with a thickness of 3-5mm.And the corrosion-resistant finishes for being set to blade outer surface then uses polytetrafluoroethylene (PTFE) tree Rouge even application forms, corrosion-resistant finishes with a thickness of 2-3mm.The corrosion resistance of exhaustive fluorinated ethylene propylene is better than polytetrafluoro Therefore the corrosion resistance of vinyl is adopted wheel disc, front shroud and back shroud outer surface that wear resistant alloy material is fabricated The anti-corrosion layer that a layer thickness is 3-5mm is formed with exhaustive fluorinated ethylene propylene even application, is incorporated into ceramic blade outer surface The anti-corrosion layer that the polyflon even application used forms a layer thickness as 2-3mm, can effectively improve centrifugal pump leaf The corrosion resistance of wheel, while the corrosion-resistant service life of impeller can be also balanced, production cost is reduced, and realize preferable corrosion resistant Lose effect.
The technical means disclosed in the embodiments of the present invention is not limited only to technological means disclosed in above embodiment, further includes Technical solution consisting of any combination of the above technical features.It should be pointed out that for those skilled in the art For, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also considered as Protection scope of the present invention.

Claims (7)

1. a kind of wear resistant corrosion resistant is centrifuged impeller of pump, it is characterised in that: including blade, wheel disc, front shroud and back shroud, blade It is sheathed on the periphery of wheel disc, the root of front shroud and back shroud is fixedly mounted on wheel disc, and the plate face of front shroud and back shroud It is covered on two middle side parts of blade respectively, front shroud and back shroud can play the role of reinforcement, the wheel disc, front cover to blade Plate and back shroud are all made of wear resistant alloy material and are fabricated, and the blade is made using thyrite, in leaf Piece, wheel disc, front shroud and back shroud outer surface be covered with one layer of corrosion-resistant finishes.
2. a kind of wear resistant corrosion resistant as described in claim 1 is centrifuged impeller of pump, which is characterized in that the wheel disc, front shroud It is using nickel-chrome-molybdenum alloy cast iron wear-resistant material, chromium carbide alloy wear-resistant material, nickel tungsten wear-resistant material and carbon with back shroud Change any one of tungsten alloy wear-resistant material to be made.
3. a kind of wear resistant corrosion resistant as claimed in claim 2 is centrifuged impeller of pump, which is characterized in that the wheel disc, front shroud It with back shroud is made using nickel-chrome-molybdenum alloy cast iron wear-resistant material.
4. a kind of wear resistant corrosion resistant as claimed in claim 3 is centrifuged impeller of pump, which is characterized in that the NI-CR-MO alloys casting The constituent that iron wear-resistant material includes are as follows: based on mass fraction, iron: 70-90%, nickel: 0.01-0.05%, chromium: 0.6-1.5%, Molybdenum: 0.01-0.05%, carbon: 3-5%, manganese: 0.5-1.5%, silicon: 0.5-1.5%.
5. a kind of wear resistant corrosion resistant according to any one of claims 1-4 is centrifuged impeller of pump, which is characterized in that the corrosion resistant Erosion resisting coating is formed using polyflon or exhaustive fluorinated ethylene propylene even application.
6. a kind of wear resistant corrosion resistant as claimed in claim 5 is centrifuged impeller of pump, which is characterized in that be set to wheel disc, front cover Plate and the corrosion-resistant finishes of back shroud outer surface are formed using exhaustive fluorinated ethylene propylene even application, the thickness of corrosion-resistant finishes For 3-5mm.
7. a kind of wear resistant corrosion resistant as claimed in claim 5 is centrifuged impeller of pump, which is characterized in that be set to blade outer surface Corrosion-resistant finishes formed using polyflon even application, corrosion-resistant finishes with a thickness of 2-3mm.
CN201811629876.7A 2018-12-29 2018-12-29 A kind of wear resistant corrosion resistant centrifugation impeller of pump Pending CN109578322A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111472991A (en) * 2019-12-24 2020-07-31 合肥皖化电机技术开发有限责任公司 Wear-resistant coating structure for water pump blade of furnace
CN111765118A (en) * 2019-12-24 2020-10-13 合肥皖化电机技术开发有限责任公司 High-temperature corrosion-resistant furnace water pump blade
CN111992073A (en) * 2020-08-07 2020-11-27 罗斯(无锡)设备有限公司 Composite coating dispersion impeller
CN114571644A (en) * 2022-02-22 2022-06-03 浙江大学 Combined type closed impeller with perfluor surface

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CN107312979A (en) * 2016-04-26 2017-11-03 天津碧宇舟机械制造有限公司 A kind of high-power corrosion-resistant blade wheel of slurry pump and its manufacture method

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CN107312979A (en) * 2016-04-26 2017-11-03 天津碧宇舟机械制造有限公司 A kind of high-power corrosion-resistant blade wheel of slurry pump and its manufacture method

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111472991A (en) * 2019-12-24 2020-07-31 合肥皖化电机技术开发有限责任公司 Wear-resistant coating structure for water pump blade of furnace
CN111765118A (en) * 2019-12-24 2020-10-13 合肥皖化电机技术开发有限责任公司 High-temperature corrosion-resistant furnace water pump blade
CN111992073A (en) * 2020-08-07 2020-11-27 罗斯(无锡)设备有限公司 Composite coating dispersion impeller
CN114571644A (en) * 2022-02-22 2022-06-03 浙江大学 Combined type closed impeller with perfluor surface

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