CN204386938U - Axial Fan Blades fixed mechanism - Google Patents
Axial Fan Blades fixed mechanism Download PDFInfo
- Publication number
- CN204386938U CN204386938U CN201420848131.0U CN201420848131U CN204386938U CN 204386938 U CN204386938 U CN 204386938U CN 201420848131 U CN201420848131 U CN 201420848131U CN 204386938 U CN204386938 U CN 204386938U
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- CN
- China
- Prior art keywords
- impeller
- blade
- petiole
- clamping plate
- hub
- 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 field of fluid machinery, particularly relates to a kind of fan blade.A kind of Axial Fan Blades fixed mechanism, comprise blade, impeller hub and impeller clamping plate, the end of described blade is provided with petiole, petiole is clamped on impeller hub by described impeller clamping plate, described petiole offers breach, a blade positioning block is provided with in breach, size shape and the breach of described blade positioning block are completely the same, blade positioning block offers the location unthreaded hole matched with screw, impeller clamping plate offer tapped hole, and screw extend in the unthreaded hole of location through the tapped hole on impeller clamping plate and petiole is clamped on impeller hub.The utility model individual blade damages not to be needed to change whole impeller, without the need to ensureing the material conformity of wheel hub and blade, wheel hub can select the material that price is lower, density is larger, not only cost of production can be reduced, relative centrifugal force during vane rotary can also be reduced, improve Safety performance when impeller runs up.
Description
Technical field
The utility model relates to field of fluid machinery, particularly relates to a kind of fan blade.
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 had by gas fan shaft to introducing and the machinery transferred out 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, this fixed structure cuts out one piece and fills up with a movable block on the petiole of blade, the screw of location does not directly contact with blade integral, if individual blade damage lay down to positioning screwn and blade positioning block and replaceable, do not need to change whole impeller, not only can reduce cost of production, relative centrifugal force during vane rotary can also be reduced, improve Safety performance when impeller runs up.
The utility model is achieved in that a kind of Axial Fan Blades fixed mechanism, comprise blade, impeller hub and impeller clamping plate, the end of described blade is provided with petiole, petiole is clamped on impeller hub by described impeller clamping plate, described petiole offers breach, a blade positioning block is provided with in breach, size shape and the breach of described blade positioning block are completely the same, blade positioning block offers the location unthreaded hole matched with screw, impeller clamping plate offer tapped hole, screw extend in the unthreaded hole of location through the tapped hole on impeller clamping plate and petiole is clamped on impeller hub.
Described petiolar notch geometry is crescent shape.
The axis of described tapped hole is also vertical with the axes intersect of petiole.
The utility model Axial Fan Blades fixed mechanism cuts out one piece and fills up with a movable block on the petiole of blade, the screw of location does not directly contact with blade integral, if individual blade damage lay down to positioning screwn and blade positioning block and replaceable, do not need to change whole impeller, and this structure of installation that splits is because not welding, so the material conformity without the need to ensureing wheel hub and blade, wheel hub can select price lower, the material that density is larger, not only cost of production can be reduced, relative centrifugal force during vane rotary can also be reduced, improve Safety performance when impeller runs up.
Accompanying drawing explanation
Fig. 1 is the integral installation schematic diagram of the utility model Axial Fan Blades fixed mechanism;
Fig. 2 is the schematic cross-section in petiole region in the utility model.
In figure: 1 blade, 2 impeller hubs, 3 impeller clamping plate, 4 screws, 5 blade positioning blocks, 6 petioles.
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 Fig. 1, shown in 2, a kind of Axial Fan Blades fixed mechanism, comprise blade 1, impeller hub 2 and impeller clamping plate 3, the end of described blade 1 is provided with petiole 6, petiole 6 is clamped on impeller hub 2 by described impeller clamping plate 3, described petiole 6 offers breach, a blade positioning block 5 is provided with in breach, size shape and the breach of described blade positioning block 5 are completely the same, blade positioning block 5 offers the location unthreaded hole matched with screw 4, impeller clamping plate 3 offer tapped hole, screw 4 extend in the unthreaded hole of location through the tapped hole on impeller clamping plate 3 and petiole 6 is clamped on impeller hub 2.
In the present embodiment, the axes intersect of the axis of described tapped hole and petiole 6 vertical.Fastening force between such guarantee blade positioning block 5 and positioning screwn 4
When mounted, screw 4 head of location is combined into one section of polished rod to match with location unthreaded hole, and impeller hub 2 and impeller clamping plate 3 clamp petiole 6 under the effect of screw 4, thus blade 1 has been fixed on impeller hub 2, after whole blade fixes, impeller sets installs complete; When individual blade needs to dismantle, as long as take corresponding positioning screwn and replaceable blade apart.
Claims (3)
1. an Axial Fan Blades fixed mechanism, comprise blade (1), impeller hub (2) and impeller clamping plate (3), the end of described blade (1) is provided with petiole (6), petiole (6) is clamped on impeller hub (2) by described impeller clamping plate (3), it is characterized in that: described petiole (6) offers breach, a blade positioning block (5) is provided with in breach, size shape and the breach of described blade positioning block (5) are completely the same, blade positioning block (5) offers the location unthreaded hole matched with screw (4), (3) offer tapped hole with impeller clamping plate, screw (4) extend in the unthreaded hole of location through the tapped hole on impeller clamping plate (3) and petiole (6) is clamped on impeller hub (2).
2. Axial Fan Blades fixed mechanism as claimed in claim 1, is characterized in that: the notch geometry on described petiole (6) is crescent shape.
3. Axial Fan Blades fixed mechanism as claimed in claim 1 or 2, is characterized in that: the axis of described tapped hole is also vertical with the axes intersect of petiole (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420848131.0U CN204386938U (en) | 2014-12-29 | 2014-12-29 | Axial Fan Blades fixed mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420848131.0U CN204386938U (en) | 2014-12-29 | 2014-12-29 | Axial Fan Blades fixed mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204386938U true CN204386938U (en) | 2015-06-10 |
Family
ID=53359663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420848131.0U Expired - Fee Related CN204386938U (en) | 2014-12-29 | 2014-12-29 | Axial Fan Blades fixed mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204386938U (en) |
-
2014
- 2014-12-29 CN CN201420848131.0U patent/CN204386938U/en not_active Expired - Fee Related
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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: 20150610 Termination date: 20191229 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |