CN111089077B - Wear-resistant silicon carbide ceramic impeller - Google Patents
Wear-resistant silicon carbide ceramic impeller Download PDFInfo
- Publication number
- CN111089077B CN111089077B CN201811243841.XA CN201811243841A CN111089077B CN 111089077 B CN111089077 B CN 111089077B CN 201811243841 A CN201811243841 A CN 201811243841A CN 111089077 B CN111089077 B CN 111089077B
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- China
- Prior art keywords
- wear
- cover plate
- silicon carbide
- resistant
- blade body
- 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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- 229910010271 silicon carbide Inorganic materials 0.000 title claims abstract description 39
- 239000000919 ceramic Substances 0.000 title claims abstract description 35
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 title claims abstract description 35
- 238000005299 abrasion Methods 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims description 10
- 239000000853 adhesive Substances 0.000 claims description 8
- 230000001070 adhesive effect Effects 0.000 claims description 8
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- RJCRUVXAWQRZKQ-UHFFFAOYSA-N oxosilicon;silicon Chemical compound [Si].[Si]=O RJCRUVXAWQRZKQ-UHFFFAOYSA-N 0.000 claims 1
- 238000005245 sintering Methods 0.000 claims 1
- 238000005260 corrosion Methods 0.000 abstract description 4
- 230000007797 corrosion Effects 0.000 abstract description 4
- 239000012530 fluid Substances 0.000 abstract description 3
- 239000002002 slurry Substances 0.000 description 5
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 4
- 229910052581 Si3N4 Inorganic materials 0.000 description 3
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003250 coal slurry Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
- 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
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/007—Details, component parts, or accessories 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
- F04D29/2261—Rotors specially for centrifugal pumps with special measures
- F04D29/2294—Rotors specially for centrifugal pumps with special measures for protection, e.g. against abrasion
-
- 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
- F04D29/24—Vanes
- F04D29/242—Geometry, shape
Landscapes
- 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 belongs to the technical field of fluid conveying equipment, and particularly relates to a wear-resistant silicon carbide ceramic impeller which comprises a front cover plate, a rear cover plate, a blade and a rotation center, wherein the blade and the rotation center are clamped between the front cover plate and the rear cover plate, the front end of the blade is close to the rotation center, the rear end of the blade is close to the outer ring of the impeller, and the blade comprises a blade body and a wear-resistant block arranged at the front end of the blade body, has good wear resistance and corrosion resistance and is particularly suitable for conveying high-abrasion conveying media.
Description
Technical Field
The invention belongs to the technical field of fluid conveying equipment, and particularly relates to a wear-resistant silicon carbide ceramic impeller.
Background
The slurry pump is suitable for conveying slurry containing solid particles and having abrasion resistance and corrosion resistance, such as ore slurry conveying in metallurgical ore dressing plants, ash conveying in power plants, coal slurry conveying, heavy medium conveying and the like, the impeller is a core component of the heavy slurry pump, the purpose of adopting the impeller is to convert energy between 'kinetic energy of fluid' and 'mechanical energy', the impeller must have excellent abrasion resistance and corrosion resistance to meet the requirements of working conditions, the service life of the impeller is prolonged, and the reduction of production cost is always a hot spot to be solved in the research and development of the slurry pump.
In the conveying process of the impeller, one side of the impeller, which is close to the water inlet end, bears larger impact force, and in the flowing process of the conveying medium, higher abrasiveness is generated on the contact part, so that the side, which is close to the water inlet end, of the impeller is easy to wear, the service life is reduced, and after the water inlet end is worn, the blades of the whole impeller are required to be replaced, so that the resource waste is serious.
Disclosure of Invention
The invention aims to solve the problems, and provides a wear-resistant silicon carbide ceramic impeller which has better wear resistance and corrosion resistance and is particularly suitable for conveying a conveying medium with high abrasion resistance.
The invention is realized by adopting the following technical scheme:
The utility model provides a wear-resisting carborundum ceramic impeller, includes front shroud, back shroud and presss from both sides blade and the rotation center of locating between front shroud and the back shroud, the front end of blade is close to the rotation center, the rear end of blade is close to the outer lane of impeller, the blade includes the blade body and locates the wear-resisting piece of blade body front end.
In a preferred scheme, the blade body and the wear-resistant block are integrally formed.
Preferably, the wear-resistant block is prefabricated in advance.
In another preferred scheme, an adhesive is filled between the blade body and the wear-resistant block.
Preferably, the front cover plate comprises a front cover plate body and an upper circular ring, the upper circular ring is arranged on the inner side of the front cover plate body, the top of the blade body is fixedly arranged at the bottom of the front cover plate body, and the top of the wear-resisting block is fixedly arranged at the bottom of the upper circular ring.
Preferably, the back cover plate comprises a back cover plate body and a lower circular ring, the lower circular ring is arranged on the inner side of the back cover plate body, the bottom of the blade body is fixedly arranged at the bottom of the back cover plate body, and the bottom of the wear-resisting block is fixedly arranged at the bottom of the lower circular ring.
Preferably, the wear-resisting block comprises a wear-resisting block body and a convex part, the wear-resisting block body and the convex part are integrally formed, the convex part is matched with the blade body, and a grid groove is formed in the connecting surface of the convex part and the blade body.
Preferably, the convex part is in a trapezoid structure, and the area of the connecting surface of the trapezoid structure and the blade body is larger than that of the connecting surface of the abrasion-resistant block body.
In a preferred scheme, the connection surface of the wear-resistant block and the front cover plate is provided with grid grooves.
In a preferred scheme, the connection surface of the wear-resistant block and the rear cover plate is provided with grid grooves.
Preferably, the blade body is made of silicon carbide ceramic, and the wear-resistant block is made of silicon carbide ceramic, silicon nitride-bonded silicon carbide ceramic or silicon oxide-bonded silicon carbide ceramic.
The beneficial effects of the invention are as follows:
1. The wear-resistant silicon carbide ceramic impeller provided by the invention has the advantages that the wear-resistant block is arranged at the position of the blade bearing larger impact force, compared with the impeller body, the wear-resistant block has higher hardness, strength, impact resistance and wear resistance, the service life of the wear-resistant silicon carbide ceramic impeller is prolonged, and the wear-resistant silicon carbide ceramic impeller is particularly suitable for conveying high-abrasion conveying media.
2. The upper circular ring and the lower circular ring are arranged, so that all parts of the wear-resistant silicon carbide ceramic impeller are tightly connected and firmly fixed.
3. The wear-resistant block provided by the invention is provided with the convex parts and the grid grooves, the connection strength with the blade body, the front cover plate and the rear cover plate is higher, the adhesive is solidified and provided with the rugged connection surface, and the wear-resistant block is reliably connected with the blade body, the front cover plate and the rear cover plate and has high stability.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a perspective view of a wear resistant silicon carbide ceramic impeller of the present invention.
Fig. 2 is a perspective cross-sectional view of the abrasion resistant silicon carbide ceramic impeller of the present invention.
Fig. 3 is another perspective cross-sectional view of the abrasion resistant silicon carbide ceramic impeller of the present invention.
Fig. 4 is a perspective cross-sectional view of the upper ring, lower ring and wear block of the present invention.
Fig. 5 is a perspective view of the wear block of the present invention.
Fig. 6 is another perspective view of the wear block of the present invention.
In the figure, 1, a front cover plate; 11. a front cover plate body; 12. an upper circular ring; 2. a back cover plate; 21. a back cover plate body; 22. a rear circular ring; 3. a rotation center; 4. a blade body; 5. a wear block; 51. a wear block body; 52. a convex portion; 53. grid trenches.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.
As shown in fig. 1 and 2, the wear-resistant silicon carbide ceramic impeller comprises a front cover plate 1, a rear cover plate 2, and blades and a rotation center 3, wherein the blades are clamped between the front cover plate 1 and the rear cover plate 2, the front ends of the blades are close to the rotation center 3, the rear ends of the blades are close to the outer ring of the impeller, and the blades comprise a blade body 4 and wear-resistant blocks 5 arranged at the front ends of the blade body 4.
Preferably, the blade body 4 and the wear-resistant block 5 are integrally formed, and further preferably, the wear-resistant block is prefabricated in advance. For example, in the present embodiment, the wear-resistant block 5 is first made of silicon nitride in combination with a silicon carbide material, and then the wear-resistant block 5 is placed in a mold, and sintered together with the sintered material of the blade body 4 in the mold, to obtain the integrally formed blade body 4 and wear-resistant block 5. For another example, in another embodiment, zirconia material and silicon carbide material are placed in a mold, where the zirconia material is located at the wear-resistant block 5, where the silicon carbide material is located at the blade body 4, and then sintered to obtain the integrally formed blade body 4 and wear-resistant block 5.
The wear block 5 is now more wear resistant than the blade body 4, which blade body 4 is in a preferred embodiment made of silicon carbide ceramic, and the wear block 5 is made of silicon carbide ceramic, silicon nitride bonded silicon carbide ceramic or silicon oxide bonded silicon carbide ceramic.
As shown in fig. 2,3 and 4, in a preferred solution, the front cover plate 1 includes a front cover plate body 11 and an upper ring 12, the upper ring 12 is disposed on the inner side of the front cover plate body 11, the top of the blade body 4 is fixedly disposed at the bottom of the front cover plate body 11, and the top of the wear-resistant block 5 is fixedly disposed at the bottom of the upper ring 11.
Preferably, the back cover plate 2 comprises a back cover plate body 21 and a lower circular ring 22, the lower circular ring 22 is arranged on the inner side of the back cover plate body 21, the bottom of the blade body 4 is fixedly arranged at the bottom of the back cover plate body 21, and the bottom of the wear-resisting block 5 is fixedly arranged at the bottom of the lower circular ring 22.
The upper ring 21 and the lower ring 22 provided by the invention improve the connection stability of the wear-resistant block 5 and the blade body 4, and especially when the wear-resistant block 5 and the upper ring 12, the wear-resistant block 5 and the lower ring 22, and the wear-resistant block 5 and the upper ring 12 and the lower ring 22 are manufactured in an integrated mode, the connection strength of the wear-resistant block 5 and the blade body 4 is higher, the stability among the wear-resistant block 5, the blade body 4 and the front cover plate 1, the stability among the wear-resistant block 5, the blade body 4 and the rear cover plate 2 is higher, so that all parts of the wear-resistant silicon carbide ceramic impeller are tightly connected and firmly fixed.
According to another preferred scheme, an adhesive is filled between the blade body 4 and the wear-resistant block 5, the adhesive is preferably a resin adhesive, the wear-resistant block 5 and the blade body 4 are fixed in an adhesive mode, when the wear-resistant block 5 is damaged, the wear-resistant block 5 is directly replaced without replacing the whole blade, so that maintenance work can be completed, the utilization rate of resources is high, and production and maintenance costs are saved.
As shown in fig. 5 and 6, the wear-resistant block 5 includes a wear-resistant block body 51 and a protrusion 52, the wear-resistant block body 51 and the protrusion 52 are integrally formed, the protrusion 52 is matched with the blade body 4, and a grid groove 53 is provided on a connection surface between the protrusion 52 and the blade body 4.
The preferable scheme, the vertical sides of wear-resisting block body 51 and convex part 52 are the cambered surface, and the design of original blade is not changed in the setting of cambered surface, practices thrift mechanical energy, and can avoid the flow direction of conveying medium to take place to flocculate when carrying.
Preferably, the convex part 52 is in a trapezoid structure, the area of the connection surface between the trapezoid structure and the blade body 4 is larger than that of the connection surface between the trapezoid structure and the wear-resisting block body 51, and the stability of the impeller wear-resisting block and the blade installation is further ensured by the trapezoid structure.
Preferably, the connection surface of the wear-resistant block 5 and the front cover plate 1 is provided with grid grooves 53.
Preferably, the connection surface of the wear-resistant block 5 and the rear cover plate 2 is provided with grid grooves 53.
The size of the mesh trench 53 is preferably 2mm wide and 1mm deep.
The convex parts 52 and the grid grooves 53 are arranged, so that the connection strength of the wear-resisting blocks 5 and the blade body 4, the front cover plate 1 and the rear cover plate 2 is high, the adhesive is solidified to form an uneven connection surface, and the wear-resisting blocks 5 and the blade body 4, the front cover plate 1 and the rear cover plate 2 are reliably connected and have high stability.
Preferably, the blade body 4 is made of silicon carbide material, and the wear-resistant block 5 is made of silicon nitride material or other wear-resistant material.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other. The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. The utility model provides a wear-resisting carborundum ceramic impeller, includes preceding apron (1), back shroud (2) and presss from both sides blade and rotation center (3) of locating between preceding apron (1) and back shroud (2), its characterized in that: the front ends of the blades are close to the rotating center (3), the rear ends of the blades are close to the outer ring of the impeller, and the blades comprise a blade body (4) and wear-resistant blocks (5) arranged at the front ends of the blade body (4);
The front cover plate (1) comprises a front cover plate body (11) and an upper circular ring (12), the upper circular ring (12) is arranged on the inner side of the front cover plate body (11), the top of the blade body (4) is fixedly arranged at the bottom of the front cover plate body (11), and the top of the wear-resistant block (5) is fixedly arranged at the bottom of the upper circular ring (12);
The blade body (4) and the wear-resistant block (5) are integrally formed, wherein the integral forming means that the wear-resistant block (5) is manufactured, and the wear-resistant block (5) and a sintering material of the blade body (4) are sintered together to obtain the integrally formed blade body (4) and the wear-resistant block (5).
2. The wear resistant silicon carbide ceramic impeller of claim 1, wherein: the wear-resistant block (5) is prefabricated in advance.
3. The wear resistant silicon carbide ceramic impeller of claim 1, wherein: and an adhesive is filled between the blade body (4) and the wear-resistant block (5).
4. A wear resistant silicon carbide ceramic impeller according to claim 1 or 3, wherein: the rear cover plate (2) comprises a rear cover plate body (21) and a lower circular ring (22), the lower circular ring (22) is arranged on the inner side of the rear cover plate body (21), the bottom of the blade body (4) is fixedly arranged at the bottom of the rear cover plate body (21), and the bottom of the wear-resisting block (5) is fixedly arranged at the bottom of the lower circular ring (22).
5. A wear resistant silicon carbide ceramic impeller according to claim 1 or 3, wherein: the wear-resisting block (5) comprises a wear-resisting block body (51) and a convex part (52), the wear-resisting block body (51) and the convex part (52) are integrally formed, the convex part (52) is matched with the blade body (4), and a grid groove (53) is formed in the connecting surface of the convex part (52) and the blade body (4).
6. The wear resistant silicon carbide ceramic impeller of claim 5, wherein: the convex part (52) is of a trapezoid structure, and the area of the connecting surface of the trapezoid structure and the blade body (4) is larger than that of the connecting surface of the abrasion-resistant block body (51).
7. The wear resistant silicon carbide ceramic impeller of claim 5, wherein: the connecting surface of the wear-resistant block (5) and the front cover plate (1) or the rear cover plate (2) is provided with grid grooves (53).
8. The wear resistant silicon carbide ceramic impeller of claim 1, wherein: the blade body (4) is made of silicon carbide ceramic, and the wear-resistant block (5) is made of silicon carbide ceramic, silicon nitride-silicon carbide ceramic or silicon oxide-silicon carbide ceramic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811243841.XA CN111089077B (en) | 2018-10-24 | 2018-10-24 | Wear-resistant silicon carbide ceramic impeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811243841.XA CN111089077B (en) | 2018-10-24 | 2018-10-24 | Wear-resistant silicon carbide ceramic impeller |
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| Publication Number | Publication Date |
|---|---|
| CN111089077A CN111089077A (en) | 2020-05-01 |
| CN111089077B true CN111089077B (en) | 2024-08-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811243841.XA Active CN111089077B (en) | 2018-10-24 | 2018-10-24 | Wear-resistant silicon carbide ceramic impeller |
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| WO2025015907A1 (en) * | 2023-07-14 | 2025-01-23 | 江西耐普矿机股份有限公司 | Slurry pump impeller |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209041168U (en) * | 2018-10-24 | 2019-06-28 | 汉江弘源襄阳碳化硅特种陶瓷有限责任公司 | A kind of wearable silicon nitride ceramic impeller |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2451780Y (en) * | 2000-11-29 | 2001-10-03 | 长沙市中南抗磨材料有限责任公司 | Slag pulp pump vanes capable of reducing wash-out wearing |
| AU2003903024A0 (en) * | 2003-06-16 | 2003-07-03 | Weir Warman Ltd | Improved pump impeller |
| EP2317079B1 (en) * | 2009-10-30 | 2020-05-20 | Ansaldo Energia Switzerland AG | Abradable coating system |
| CN101787983A (en) * | 2010-03-12 | 2010-07-28 | 肖琼 | Wear-resistant impeller of vane-type pump |
| CN108425880A (en) * | 2018-04-12 | 2018-08-21 | 汉江弘源襄阳碳化硅特种陶瓷有限责任公司 | A kind of small-sized silicon carbide ceramic impeller of heavy type slurry pump |
| CN108443161A (en) * | 2018-04-12 | 2018-08-24 | 汉江弘源襄阳碳化硅特种陶瓷有限责任公司 | A kind of large-scale silicon carbide ceramic impeller of heavy type slurry pump |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209041168U (en) * | 2018-10-24 | 2019-06-28 | 汉江弘源襄阳碳化硅特种陶瓷有限责任公司 | A kind of wearable silicon nitride ceramic impeller |
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