CN220452280U - High-strength wear-resistant impeller - Google Patents
High-strength wear-resistant impeller Download PDFInfo
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- CN220452280U CN220452280U CN202321551575.3U CN202321551575U CN220452280U CN 220452280 U CN220452280 U CN 220452280U CN 202321551575 U CN202321551575 U CN 202321551575U CN 220452280 U CN220452280 U CN 220452280U
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- 238000001914 filtration Methods 0.000 claims description 5
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000012545 processing Methods 0.000 abstract description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000012937 correction Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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Abstract
The utility model provides a high-strength wear-resistant impeller, and belongs to the technical field of machinery. The impeller solves the problem that the existing impeller is low in strength and easy to wear. This high strength wear-resisting impeller, including blade, rim plate and shaft, the rim plate center is formed with the shaft, and the blade is radial straight leaf, evenly arranges on the rim plate around the shaft, and the blade is used for filterable one side in wide department to weld first wearing layer, and first wearing layer anticlockwise front side has welded rather than complex second wearing layer on the rim plate, and processing parameters such as thickness, the area of first wearing layer and second wearing layer are for obtaining through the impeller inner flow field direction after the CFD calculates. The utility model has the advantages of improving the strength of the impeller, prolonging the service life of the impeller, having high working efficiency and balanced operation and saving the production cost.
Description
Technical Field
The utility model belongs to the technical field of machinery, and relates to an impeller, in particular to a high-strength wear-resistant impeller.
Background
Impellers are the only components in vane-type fluid machines that transfer energy to a fluid, by which the mechanical energy of the prime mover is converted into kinetic and pressure energy of the fluid. The impeller is divided into an open type impeller, a semi-open type impeller and a closed type impeller according to the structural form, and the high-speed centrifugal fan or the compressor in the prior art mostly adopts the semi-open type impeller.
As shown in fig. 1, a conventional semi-open impeller, which includes blades 1, a disk 2 and a hub 3, is affected by centrifugal force generated by rotation, and the filtering surface of the impeller is easily worn, resulting in a reduction in the service life thereof.
According to the silt pump wear-resistant impeller disclosed in the patent number CN201711170259.0, the whole impeller surface is covered with a wear-resistant coating to resist wear, so that the service life is prolonged. However, the impeller has different wear degrees at different positions in the use process, so that the production cost is increased by the way of full coverage of the wear-resistant coating.
Disclosure of Invention
The present utility model has been made keeping in mind the above problems occurring in the prior art, and an object of the present utility model is to provide a high strength, wear resistant impeller.
The aim of the utility model can be achieved by the following technical scheme: the high-strength wear-resistant impeller comprises blades, a wheel disc and a wheel shaft, wherein the wheel disc is round, a plurality of blades are arranged on the wheel disc, and the wheel shaft matched with a power shaft is formed in the center of the wheel disc;
the blades are uniformly distributed on the wheel disc around the wheel axle, the diameter of the circumference formed by the blades near the root of the wheel axle is the same as the outer diameter of the wheel axle, the diameter of the circumference formed by the head near the outer edge of the wheel disc is slightly smaller than the diameter of the wheel disc, the blades are in the shape of radial straight blades, the blades are uniform and wider near the outer edge of the wheel disc, and the blades are gradually narrowed near the wheel axle;
the vane is welded with a first wear-resistant layer on one side of the wider part for filtering, a second wear-resistant layer matched with the first wear-resistant layer is welded on the wheel disc on the front side of the first wear-resistant layer in the anticlockwise direction, and processing parameters such as thickness, area and the like of the first wear-resistant layer and the second wear-resistant layer are obtained in the flow field direction in the impeller after CFD calculation.
In the high-strength wear-resistant impeller, the blades are integrally manufactured by welding wear-resistant alloy steel and 45# steel.
In the high-strength wear-resistant impeller, two screw holes are formed in the wheel shaft, and the screw holes are distributed on two sides of the wheel shaft by taking the central axis of the wheel shaft as a symmetrical center.
In the high-strength wear-resistant impeller, the wheel shaft is provided with the step at the joint with the wheel disc.
Compared with the prior art, the high-strength wear-resistant impeller provided by the utility model has the following advantages:
1. according to the position of the impeller filtering surface, which is easy to wear, the wear-resistant layer is welded according to the direction of the flow field in the impeller after CFD calculation, so that the production cost is saved on the basis of improving the strength of the impeller and prolonging the service life of the impeller;
2. the impeller blade is manufactured by welding high-quality wear-resistant alloy steel and 45# steel, and is subjected to dynamic and static balance correction, so that the working efficiency is high and the operation is balanced.
Drawings
FIG. 1 is a schematic view of a conventional semi-open impeller;
FIG. 2 is a schematic structural view of the present high strength wear resistant impeller;
fig. 3 is a schematic cross-sectional view of the present high strength wear resistant impeller.
In the above figures, 1, a blade; 11. a first wear layer; 2. a wheel disc; 21. a second wear layer; 3. a wheel axle; 31. screw holes; 32. a step.
Description of the embodiments
The following are specific embodiments of the present utility model and the technical solutions of the present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to these embodiments.
As shown in fig. 2 to 3, the high-strength wear-resistant impeller comprises blades 1, a wheel disc 2 and a wheel shaft 3, wherein the wheel disc 2 is circular, a plurality of blades 1 are uniformly arranged on the wheel disc 2, and the wheel shaft 3 matched with a power shaft is formed in the center of the wheel disc 2. The wheel axle 3 is provided with a step 32 at the joint with the wheel disc 2, so that the uneven stress of the wheel disc 2 is avoided to generate position deviation.
The blades 1 of the high-strength wear-resistant impeller are radial straight blades which are uniformly distributed on the wheel disc 2 around the wheel shaft 3. The root of the blade 1 is close to the wheel axle 3 and is connected with the outer side wall of the wheel axle 3, and the circumference diameter of a circle formed by the root of the blade 1 is the same as the outer diameter of the wheel axle 3; the head of the blade 1 is close to the outer edge of the wheel disc 2, the circumferential diameter of a circle formed by the head of the blade 1 is slightly smaller than the outer edge diameter of the wheel disc 2, and the impeller blade 1 and other parts are prevented from being staggered and not smooth to operate due to thermal expansion and cold contraction of materials.
The shape of the blade 1 is uniform and wider near the outer edge of the disk 2 and narrows near the hub 3. The blade 1 is welded with a first wear layer 11 on the side for filtering at the wider area, and a second wear layer 21 cooperating with the first wear layer 11 is welded on the wheel disc 2 on the front side in the anticlockwise direction. The positions of the first wear-resistant layer 11 and the second wear-resistant layer 21 are filter surfaces of the impeller, and the processing parameters such as thickness, area and the like of the first wear-resistant layer 11 and the second wear-resistant layer 21 are obtained by calculating the flow field direction in the impeller through CFD.
As shown in fig. 1, the conventional semi-open impeller comprises a blade 1, a wheel disc 2 and a wheel shaft 3, has a simple structure and is easy to wear, the strength of the blade 1 is usually improved by adding a wear-resistant layer to the whole blade 1 in the prior art, but because the wear degrees of the impeller at different positions in the use process are different, the method of accurately adding the wear-resistant layer can ensure the improvement of the strength of the impeller, prolong the service life of the impeller and save the production cost.
Further, the blade 1 is manufactured by welding high-quality wear-resistant alloy steel and 45# steel integrally, and is subjected to dynamic and static balance correction, so that the working efficiency is high and the operation is balanced.
Further, two screw holes 31 are provided on the axle 3, and the screw holes 31 are symmetrically distributed on two sides of the axle 3 with the central axis of the axle 3 as a symmetry center. By screwing the screw into the screw hole 31, a slight expansion of the screw hole 31 can be produced, and the wheel shaft 3 is pressed to be more fastened when being matched with a power shaft, so that deflection and vibration are avoided.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.
Although various terms are used more herein, the use of other terms is not precluded. These terms are used merely for convenience in describing and explaining the nature of the utility model; they are to be interpreted as any additional limitation that is not inconsistent with the spirit of the present utility model.
Claims (4)
1. The high-strength wear-resistant impeller comprises blades (1), a wheel disc (2) and an axle (3), and is characterized in that the wheel disc (2) is circular, a plurality of blades (1) are arranged on the wheel disc, and the center of the wheel disc (2) is provided with the axle (3) matched with a power shaft; the blades (1) are uniformly distributed on the wheel disc (2) around the wheel axle (3), the diameter of the circumference formed by the blades (1) near the root of the wheel axle (3) is the same as the outer diameter of the wheel axle (3), the diameter of the circumference formed by the head near the outer edge of the wheel disc (2) is slightly smaller than the diameter of the wheel disc (2), the blades (1) are radial straight blades, the blades (1) are uniform and wider near the outer edge of the wheel disc (2), and the blades (1) are gradually narrowed near the wheel axle (3);
one side of the blade (1) used for filtering is welded with a first wear-resistant layer (11) at a wider position, the front side of the first wear-resistant layer (11) in the anticlockwise direction is welded with a second wear-resistant layer (21) matched with the first wear-resistant layer on the wheel disc (2), and the thicknesses and the areas of the first wear-resistant layer (11) and the second wear-resistant layer (21) are obtained by calculating the flow field direction in the impeller through CFD.
2. A high strength wear resistant impeller in accordance with claim 1, wherein the blade (1) is integrally manufactured from wear resistant alloy steel welded with 45# steel.
3. The high-strength wear-resistant impeller as claimed in claim 1, wherein two screw holes (31) are formed in the wheel shaft (3), and the screw holes (31) are distributed on two sides of the wheel shaft (3) with the central axis of the wheel shaft (3) as a symmetrical center.
4. A high strength wear resistant impeller according to claim 1, characterized in that the wheel axle (3) is provided with a step (32) at the connection with the wheel disc (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321551575.3U CN220452280U (en) | 2023-06-19 | 2023-06-19 | High-strength wear-resistant impeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321551575.3U CN220452280U (en) | 2023-06-19 | 2023-06-19 | High-strength wear-resistant impeller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220452280U true CN220452280U (en) | 2024-02-06 |
Family
ID=89740030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321551575.3U Active CN220452280U (en) | 2023-06-19 | 2023-06-19 | High-strength wear-resistant impeller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220452280U (en) |
-
2023
- 2023-06-19 CN CN202321551575.3U patent/CN220452280U/en active Active
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