CN205173057U - Axial -flow blower blade retention mechanism - Google Patents
Axial -flow blower blade retention mechanism Download PDFInfo
- Publication number
- CN205173057U CN205173057U CN201520840652.6U CN201520840652U CN205173057U CN 205173057 U CN205173057 U CN 205173057U CN 201520840652 U CN201520840652 U CN 201520840652U CN 205173057 U CN205173057 U CN 205173057U
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- CN
- China
- Prior art keywords
- petiole
- blade
- nut
- tight cover
- mounting groove
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to an axial fan field especially relates to a fan blade fixed establishment. An axial -flow blower blade retention mechanism, includes blade, impeller and petiole, blade retention installs the outer end at the petiole, the outer lane of impeller is provided with carrier ring, the last petiole mounting groove of having seted up of carrier ring, be provided with the tight cover that expands in the petiole mounting groove, the inner of petiole is passed and is expanded tight cover back at tip suit petiole nut, the laminating of the one end of petiole nut on carrier ring, the petiole nut for the other end clamp plate push down, the clamp plate compresses tightly fixedly through bridge screw and petiole nut. The utility model discloses a petiole mounting groove cooperation on bloated tight cover and the carrier ring is fixed, and the convenience is installed and removed to bloated tight cover, can guarantee good centering effect, the tight cover that expands is connected does not have the stress concentration source on the face, and intensity is high, it is reliable and stable to connect, can overcome righting moment, prevents that fan operation in -process blade from closing, greatly reduced the maintenance cost.
Description
Technical field
The utility model relates to axial-flow blower field, particularly relates to a kind of fan blade fixed mechanism.
Background technique
Blower fan be the changes mechanical energy of rotation is become gas pressure can and kinetic energy the general machinery equipment that gas is transferred out, propeller fan be the mechanical energy of rotation is converted to gas pressure can and kinetic energy the machinery that gas is transferred out from fan shaft to introducing and from axis.Paddle-wheel fan realizes the critical component of mechanical energy conversion, is made up of blade and wheel hub.
In existing blower fan, when blade angle is constant, the form that blade is fixed on wheel hub has following several usually:
(1): welding.Be exactly by blade and hub welding integral, the blade that the method is usually used in metal circular arc plate blade profile is fixed.This method is only just suitable for when blade is identical with hub material or close, when material is different, as aluminium alloy vane and low carbon steel wheel hub are just difficult to weld together.In addition, this fixed structure makes blade and wheel hub form an entirety, cannot split, if can only change whole impeller when having a slice blade damage.
(2): casting.Directly blade and wheel hub being cast as an entirety by casting, being usually used in the fixing of wing blades.This structure also usually only may appear at blade identical with hub material time, and blade and wheel hub are an entirety, cannot split, have a slice blade damage if there is a slice blade defectiveness or in running in manufacture process, whole impeller has just been scrapped.
(3): riveted joint or bolt, screw connect.This structure is directly linked together with rivet or bolt, screw at blade and wheel hub, is usually used in changing the fixing of backplate section blade.The method is only applicable to the blade of circular arc plate blade profile.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of Axial Fan Blades fixed mechanism, fixed by expansion sleeve between the petiole of this blower fan and impeller, expansion sleeve mounting or dismounting are convenient, good centering effect can be ensured, and can restoring moment be overcome, prevent fan operation process Leaf from closing, can also maintenance cost be reduced.
The utility model is achieved in that a kind of Axial Fan Blades fixed mechanism, comprise blade, impeller and petiole, described blade is fixedly mounted on the outer end of petiole, the outer ring of described impeller is provided with load-carrying ring, described load-carrying ring offers petiole mounting groove, expansion sleeve is provided with in described petiole mounting groove, the inner of described petiole is set with petiole nut through after expansion sleeve in end, one end of described petiole nut is fitted on load-carrying ring, petiole nut the other end pressing plate is pushed down, and described pressing plate is fixed by bridge screw and petiole nut.
Described blade is fixedly mounted on the outer end of petiole by paddle screw and screw lining.
The outer end of described petiole is also set with petiole axle bush.
The petiole of the utility model Axial Fan Blades fixed mechanism with coordinated fixing between impeller by the petiole mounting groove on expansion sleeve and load-carrying ring, expansion sleeve mounting or dismounting are convenient, can ensure good centering effect; Expansion sleeve junction surface does not have stress raiser, and intensity is high, stable connection is reliable; When bearing load, by expansion set and parts, axle in conjunction with pressure and the frictional force transmitting torque, axial force and the combined load of the two that produce together, and expansion sleeve can overcome restoring moment, prevents fan operation process Leaf from closing; This kind of Placement works as blower fan in use, and individual blade damages, and when needing change blade or readjust angle, can complete, do not need to change whole impeller, greatly reduce maintenance cost as long as first unclamp whole expansion sleeve bolt.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model Axial Fan Blades fixed mechanism.
In figure: 1 blade, 2 impellers, 3 petioles, 4 expansion sleeves, 5 paddle screws, 6 screw linings, 7 petiole nuts, 8 pressing plates, 9 bridge screws, 10 petiole axle bushes.
Embodiment
Below in conjunction with specific embodiment, set forth the utility model further.Should be understood that these embodiments are only not used in restriction scope of the present utility model for illustration of the utility model.In addition should be understood that those skilled in the art can make various changes or modifications the utility model, and these equivalent form of values fall within the application's appended claims limited range equally after the content of having read the utility model statement.
Embodiment 1
As shown in Figure 1, a kind of Axial Fan Blades fixed mechanism, comprise blade 1, impeller 2 and petiole 3, described blade 1 is fixedly mounted on the outer end of petiole 3, the outer ring of described impeller 2 is provided with load-carrying ring, described load-carrying ring offers petiole mounting groove, expansion sleeve 4 is provided with in described petiole mounting groove, the inner of described petiole 3 is set with petiole nut 7 through after expansion sleeve 4 in end, one end of described petiole nut 7 is fitted on load-carrying ring, petiole nut 7 the other end pressing plate 8 is pushed down, and described pressing plate 8 is fixed by bridge screw 9 and petiole nut 7.
In the utility model, described blade 1 is fixedly mounted on the outer end of petiole 3 by paddle screw 5 and screw lining 6, and in addition in order to play certain protective action to petiole 3, the outer end of described petiole 3 is also set with petiole axle bush 10.
When assembling, first by described petiole 3 from push through petiole axle bush 10, pass expansion sleeve 4 again till the screw thread of petiole end encounters the screw thread of petiole nut 7, then petiole nut 7 to be screwed on petiole 3 petiole mounting groove expansion sleeve 4 put into after 2 ~ 3 circles on load-carrying ring, tighten petiole nut 7 till encountering supporting ring; Finally pressing plate 8 bridge screw 9 is connected.The established angle of blade 1 can be undertaken regulating by the expansion sleeve 4 be contained in the middle of petiole 3 and be made it remain on certain position, finally tightens the bolt on expansion sleeve 4.
Claims (3)
1. an Axial Fan Blades fixed mechanism, comprise blade (1), impeller (2) and petiole (3), described blade (1) is fixedly mounted on the outer end of petiole (3), it is characterized in that: the outer ring of described impeller (2) is provided with load-carrying ring, described load-carrying ring offers petiole mounting groove, expansion sleeve (4) is provided with in described petiole mounting groove, the inner of described petiole (3) is set with petiole nut (7) through after expansion sleeve (4) in end, one end of described petiole nut (7) is fitted on load-carrying ring, petiole nut (7) the other end pressing plate (8) is pushed down, described pressing plate (8) is fixed by bridge screw (9) and petiole nut (7).
2. Axial Fan Blades fixed mechanism as claimed in claim 1, is characterized in that: described blade (1) is fixedly mounted on the outer end of petiole (3) by paddle screw (5) and screw lining (6).
3. Axial Fan Blades fixed mechanism as claimed in claim 1 or 2, is characterized in that: the outer end of described petiole (3) is also set with petiole axle bush (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520840652.6U CN205173057U (en) | 2015-10-28 | 2015-10-28 | Axial -flow blower blade retention mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520840652.6U CN205173057U (en) | 2015-10-28 | 2015-10-28 | Axial -flow blower blade retention mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205173057U true CN205173057U (en) | 2016-04-20 |
Family
ID=55737059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520840652.6U Expired - Fee Related CN205173057U (en) | 2015-10-28 | 2015-10-28 | Axial -flow blower blade retention mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205173057U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113530886A (en) * | 2020-04-22 | 2021-10-22 | 中国电建集团透平科技有限公司 | Large wind tunnel fan impeller |
-
2015
- 2015-10-28 CN CN201520840652.6U patent/CN205173057U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113530886A (en) * | 2020-04-22 | 2021-10-22 | 中国电建集团透平科技有限公司 | Large wind tunnel fan impeller |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160420 Termination date: 20191028 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |