CN211820068U - Centrifugal impeller - Google Patents
Centrifugal impeller Download PDFInfo
- Publication number
- CN211820068U CN211820068U CN202020347939.6U CN202020347939U CN211820068U CN 211820068 U CN211820068 U CN 211820068U CN 202020347939 U CN202020347939 U CN 202020347939U CN 211820068 U CN211820068 U CN 211820068U
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- Prior art keywords
- blade
- blades
- cover plate
- impeller
- centrifugal impeller
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- 238000009826 distribution Methods 0.000 claims abstract description 7
- 230000003014 reinforcing effect Effects 0.000 claims description 26
- 230000002787 reinforcement Effects 0.000 claims description 4
- 238000009423 ventilation Methods 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 description 7
- 238000003466 welding Methods 0.000 description 6
- 238000005336 cracking Methods 0.000 description 3
- 238000007792 addition Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003698 laser cutting Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model belongs to the technical field of ventilation equipment, concretely relates to centrifugal impeller. It has solved the current low problem of centrifugal impeller life. This centrifugal impeller, including front shroud and back shroud, be equipped with a plurality of blade between front shroud and the back shroud, a plurality of blade is along the circumference interval distribution of front shroud, its characterized in that, still be equipped with the beaded finish between front shroud and the back shroud, the beaded finish surrounds interval distribution's the blade outside setting, and the beaded finish is connected with every blade. The utility model discloses a promote centrifugal impeller's life.
Description
Technical Field
The utility model belongs to the technical field of ventilation equipment, concretely relates to centrifugal impeller.
Background
The centrifugal impeller is used as a core component of a centrifugal ventilator to be applied to various industries, the centrifugal impeller commonly used at present consists of a front cover plate, blades and a rear cover plate, the welding seam between the impeller and the rear cover plate is usually the position with the largest stress of the impeller due to the action of centrifugal force when the impeller operates, the impeller is firstly fatigue cracked from the position after long-time operation, and finally the impeller is torn, so that the service life of the impeller is reduced.
Disclosure of Invention
The utility model aims at having the above-mentioned problem to current technique, provided a centrifugal impeller, the utility model aims to solve the technical problem that: how to achieve an improvement in the service life of the impeller.
The purpose of the utility model can be realized by the following technical proposal:
the utility model provides a centrifugal impeller, includes front shroud and back shroud, is equipped with a plurality of blade between front shroud and the back shroud, and the circumference interval distribution of a plurality of blade edge front shroud, its characterized in that, still be equipped with the beaded finish between front shroud and the back shroud, the beaded finish surrounds interval distribution's the blade outside setting, and the beaded finish is connected with every blade.
When the impeller rotates, the strength of the blades is increased by connecting the reinforcing rings with the blades, so that the deformation quantity of the blades is reduced, and the service life of the impeller is prolonged; secondly, because the impeller can generate centrifugal force when rotating, the reinforcing ring is arranged around the outer sides of the blades which are distributed at intervals to resist the centrifugal force of part of the blades, and the service life of the impeller is prolonged; and then the stress of the centrifugal force on the welding of the blades and the front cover plate and the rear cover plate can be dispersed after the reinforcing ring is connected with the blades, so that the fatigue cracking between the blades and the front cover plate and the rear cover plate is avoided, and the service life of the impeller is prolonged.
In the centrifugal impeller, the inner edge of the reinforcing ring is provided with the slots, the number of the slots is the same as that of the blades, and the blades are correspondingly inserted into the slots one by one. The blade is limited by arranging the slot on the reinforcing ring, and the connecting area of the reinforcing ring and the blade is increased.
In the centrifugal impeller, a space is provided between the bottom of the slot and the outer edge of the reinforcing ring, and the outer side edge of the blade can abut against the bottom of the slot. Butt at the bottom of the outside limit of blade and slot, the beaded finish can carry on spacingly to the blade, has the interval between the outer border of slot bottom and beaded finish and makes the beaded finish have sufficient intensity to resist the centrifugal force that leads to the blade to produce when the impeller moves, reduces the deformation of blade, blade and front shroud, back shroud welded stress when the beaded finish dispersion impeller moves to avoid fatigue fracture between blade and front shroud, the back shroud, promote the life of impeller.
In the centrifugal impeller, the blades are welded to the reinforcing ring. The blades and the reinforcing ring are connected into a whole through welding.
In the centrifugal impeller, the blades are riveted with the front cover plate and the blades are riveted with the rear cover plate. The blade is connected with the front cover plate and the rear cover plate into a whole through riveting.
Compared with the prior art, the centrifugal impeller has the following advantages:
1. after the reinforcing ring and the blades are connected into a whole, stress generated by welding the blades with the front cover plate and the rear cover plate can be dispersed when the impeller runs, so that fatigue cracking between the blades and the front cover plate and between the blades and the rear cover plate is avoided, and the service life of the impeller is prolonged.
2. The slot of seting up on the interior border on the beaded finish under the prerequisite of guaranteeing blade integrality, increases the area of contact of beaded finish and blade, and the beaded finish can have certain spacing effect to the blade simultaneously.
3. The bottom of the slot is spaced from the edge of the reinforcing ring, so that the reinforcing ring has enough strength to resist the centrifugal force generated by the rotation of the impeller after being assembled.
Drawings
Fig. 1 is a schematic view of the overall structure of a centrifugal impeller.
Fig. 2 is a schematic structural view of the reinforcement ring.
In the figure, 1, a blade; 2. a front cover plate; 3. a rear cover plate; 4. a reinforcement ring; 5. and (4) a slot.
Detailed Description
The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
The first embodiment is as follows:
as shown in fig. 1 and 2, the centrifugal impeller includes a front cover plate 2 and a rear cover plate 3, a plurality of blades 1 are arranged between the front cover plate 2 and the rear cover plate 3, the plurality of blades 1 are circumferentially spaced apart from each other along the front cover plate 2, the blades 1 are welded to the front cover plate 2, and the blades 1 are welded to the rear cover plate 3.
As shown in fig. 1 and 2, a reinforcing ring 4 is further arranged between the front cover plate 2 and the rear cover plate 3, slots 5 are formed in the inner edge of the reinforcing ring 4 from inside to outside, the forming angles of the slots 5 are consistent with the angles of the blades 1 on the inner cover plate, the number of the slots 5 formed in the reinforcing ring 4 is the same as that of the blades 1, a distance is formed between the bottom of each slot 5 and the outer edge of the reinforcing ring 4, the slots 5 are formed by laser cutting or die stamping, the blades 1 are correspondingly inserted into the slots 5 one by one, the outer edges of the blades 1 can be abutted against the bottom of the slots 5, the reinforcing ring 4 is arranged around the blades 1 in interval distribution, the reinforcing ring 4 is connected with the blades 1 by welding, the welded reinforcing ring 4 is parallel to the rear cover plate 3, and the influence on the aerodynamics of the impeller is reduced.
As shown in fig. 1 and 2, when the impeller rotates, the strength of the blade 1 is increased by connecting the reinforcing ring 4 with the blade 1, so that the deformation of the blade 1 is reduced, and the service life of the impeller is prolonged; secondly, because the impeller can generate centrifugal force when rotating, the reinforcing ring 4 is arranged around the outer sides of the blades 1 which are distributed at intervals to resist the centrifugal force of part of the blades 1, and the service life of the impeller is prolonged; and then the reinforcing ring 4 is connected with the blade 1, and then the stress of the centrifugal force on the welding of the blade 1, the front cover plate 2 and the rear cover plate 3 can be dispersed, so that the fatigue cracking between the blade 1 and the front cover plate 2 and the rear cover plate 3 is avoided, and the service life of the impeller is prolonged.
As shown in fig. 1 and 2, the outer side edge of the blade 1 abuts against the bottom of the slot 5, the reinforcing ring 4 can limit the blade 1, and the space is formed between the bottom of the slot 5 and the outer edge of the reinforcing ring 4, so that the reinforcing ring 4 has sufficient strength to resist the centrifugal force generated by the blade 1 when the impeller operates, and the deformation of the blade 1 is reduced.
Example two:
the present embodiment is substantially the same as the above-described embodiments, and the difference is that in the present embodiment, the blade 1 is riveted to the front cover plate 2, the blade 1 is riveted to the rear cover plate 3, the edge of the blade 1 connected to the front cover plate 2 is turned over to have a riveting flange, the edge of the blade 1 connected to the front cover plate 3 is also turned over to have a riveting flange, and the front cover plate 2 and the rear cover plate 3 are both provided with mounting holes for riveting.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (5)
1. The utility model provides a centrifugal impeller, includes front shroud (2) and back shroud (3), is equipped with a plurality of blade (1) between front shroud (2) and back shroud (3), and the circumference interval distribution of front shroud (2) is followed in a plurality of blade (1), its characterized in that, still be equipped with beaded finish (4) between front shroud (2) and back shroud (3), beaded finish (4) set up around interval distribution's blade (1) outside, and beaded finish (4) are connected with every blade (1).
2. The centrifugal impeller according to claim 1, wherein the inner edge of the reinforcing ring (4) is provided with slots (5), the number of the slots (5) is the same as that of the blades (1), and the blades (1) are correspondingly inserted into the slots (5).
3. The centrifugal impeller according to claim 2, characterized in that there is a distance between the bottom of the slot (5) and the outer edge of the reinforcement ring (4), the outer side edge of the blade (1) being able to abut against the bottom of the slot (5).
4. The centrifugal impeller according to claim 1 or 2 or 3, characterized in that the blades (1) are welded to the reinforcement ring (4).
5. The centrifugal impeller according to claim 1, 2 or 3, characterized in that the blade (1) is riveted to the front shroud (2) and the blade (1) is riveted to the back shroud (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020347939.6U CN211820068U (en) | 2020-03-18 | 2020-03-18 | Centrifugal impeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020347939.6U CN211820068U (en) | 2020-03-18 | 2020-03-18 | Centrifugal impeller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211820068U true CN211820068U (en) | 2020-10-30 |
Family
ID=73011894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020347939.6U Active CN211820068U (en) | 2020-03-18 | 2020-03-18 | Centrifugal impeller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211820068U (en) |
-
2020
- 2020-03-18 CN CN202020347939.6U patent/CN211820068U/en active Active
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