CN207004923U - The blade angle locking device of propeller fan - Google Patents
The blade angle locking device of propeller fan Download PDFInfo
- Publication number
- CN207004923U CN207004923U CN201720796597.4U CN201720796597U CN207004923U CN 207004923 U CN207004923 U CN 207004923U CN 201720796597 U CN201720796597 U CN 201720796597U CN 207004923 U CN207004923 U CN 207004923U
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- CN
- China
- Prior art keywords
- sharf
- cutting ferrule
- locking device
- propeller fan
- blade angle
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- 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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Abstract
The utility model provides a kind of blade angle locking device of propeller fan, including the cutting ferrule for being fixed on ventilator hub side, the sharf being fixedly connected with blade and it is arranged on the nut that wheel hub opposite side fixes the sharf, the inner ring surface of the cutting ferrule sets internal tooth, the periphery of the sharf sets the external tooth matched with the internal tooth, and the sharf is by the external tooth and internal tooth engagement in the cutting ferrule.The blade angle locking device of propeller fan provided by the utility model can effectively prevent that drift occurs for blade angle in propeller fan operation process.
Description
Technical field
It the utility model is related to propeller fan connection equipment technical field, more particularly to a kind of blade of propeller fan
Angle locking device.
Background technology
At present, the axial fan of domestic production, for using electricity wisely, converter plant dragging is usually taken or by small vapour
Turbine is dragged (equivalent to frequency conversion).Axial fan according to blade adjustments mode be divided into operating in blade it is adjustable and operating the middle period
The non-adjustable two kinds of structures of piece.Because the rotor set part of adjustable vane in operating is more, structure is relative complex, under many circumstances
Be not suitable for Frequency converting driving situation.Therefore, non-adjustable knot in blade movement is used for Frequency converting driving situation, more axial flow blowers
Structure.Rotor is the core component of blower fan work, plays a part of transmitting mechanical work, under high-revolving operating mode, due to closing forces
The presence of square, if fan blade fixes bad, the very easily drift of generation blade angle, if drift occurs for blade angle, it is easy to
Trigger fan performance problem, so as to influence the service behaviour of blower fan.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of axle stream that can prevent blade angle from drift occurs
The blade angle locking device of ventilation blower.
In order to solve the above technical problems, the utility model provides a kind of blade angle locking device of propeller fan,
Including being fixed on the cutting ferrule of ventilator hub side, the sharf that top is fixedly connected with blade and to be arranged on wheel hub another
The nut that side is connected with the sharf afterbody, the inner ring surface of the cutting ferrule set internal tooth, the periphery at the top of the sharf
The external tooth matched with the internal tooth is set, is embedded at the top of the sharf by the external tooth and internal tooth engagement in the cutting ferrule.
Further, the rear portion of the nut sets the guard plate for preventing nut loosening, and the guard plate is fixed with back-up ring.
Further, the internal tooth number of the cutting ferrule is 100-140, and the external tooth number of the sharf is 100-140
It is individual.
Further, the matching gap between the external tooth of the internal tooth of the cutting ferrule and the sharf is 0.1-0.2mm.
Further, the cutting ferrule is fixedly connected by screw with wheel hub.
Further, the sharf is fixedly connected by screw with blade.
The blade angle locking device of propeller fan provided by the utility model, cutting ferrule is fixed on axial fan hub one
Side, sharf top carry out tooth-like connection by sharf external tooth and cutting ferrule internal tooth with cutting ferrule, and sharf afterbody and wheel hub are another
The nut of side is connected, it is ensured that angle drift occurs in real-world operation for Axial Fan Blades, avoids triggering blower fan
Performance issue, so as to ensure that the service behaviour of blower fan, effectively increase the safety in utilization of axial flow blower.Also, in axle stream
The angle of blade can be adjusted manually according to operating mode during ventilation blower stopped status, reduce use cost and the maintenance of unit
Cost.
Brief description of the drawings
Fig. 1 is the structural representation of the blade angle locking device for the propeller fan that the utility model embodiment provides；
Fig. 2 is the cutting ferrule sectional view of the blade angle locking device for the propeller fan that the utility model embodiment provides；
Fig. 3 is the cutting ferrule top view of the blade angle locking device for the propeller fan that the utility model embodiment provides；
Fig. 4 is the sharf section view of the blade angle locking device for the propeller fan that the utility model embodiment provides
Figure；
Fig. 5 is that the sharf of the blade angle locking device for the propeller fan that the utility model embodiment provides is overlooked
Figure.
Embodiment
Referring to Fig. 1, a kind of blade angle locking device for propeller fan that the utility model embodiment provides, including it is solid
The top of the cutting ferrule 1 of the side of ventilator hub 6, the sharf 2 being fixedly connected at top with blade 7, sharf 2 is scheduled on embedded in card
In set 1, the tail end of sharf 2 is spirally connected with being arranged on the nut 3 of the opposite side of wheel hub 6, so as to by sharf 2, cutting ferrule 1 and wheel hub 6
It is fixed together.Also, guard plate 4 is set in the bottom of nut 3, guard plate 4 is fixed with back-up ring 5, can effectively prevent nut 3
Loosening retreat.
Referring to Fig. 2 and Fig. 3, cutting ferrule 1 is the annular sleeve with toroidal, the inner ring of cutting ferrule 1 made of forging process
100-140 internal tooth 11 is provided with face, is evenly arranged with 6 tapped through holes 12 on cutting ferrule 1, on the wheel hub 6 of propeller fan
Screw thread dark holes corresponding with tapped through hole 12 is provided with, 6 high-strength screws are screwed onto wheel through the tapped through hole 12 on cutting ferrule 1
In screw thread dark holes on hub 6, so as to which cutting ferrule 1 to be fixedly connected on to the outside of wheel hub 6.
Referring to Fig. 4 and Fig. 5, sharf 2 is that the top circumference radius being processed into by the forging of 42CrMo materials is more than bottom
The structure of cylindrical radius, the top circumference size of sharf 2 match with the inner circle size of cutting ferrule 1, and the lower cylindrical of sharf 2 is big
It is small to be matched with the center hole size of wheel hub 6.The top of sharf 2 is provided with 8 screwed holes 22, is provided with blade 7 and screw thread
Through hole corresponding to hole 22,8 high-strength screws are screwed onto in the screwed hole 22 on sharf 2 through the through hole on blade, so as to
Sharf 2 and blade 7 are fixed together.It is individual interior with cutting ferrule 1 that the periphery at the top of sharf 2 is provided with 100-140
The external tooth 21 that tooth 11 matches each other.As a kind of embodiment of the present utility model, in order to make external tooth 21 and internal tooth 11
Between have preferably engagement and higher keying strength, the present embodiment the number of teeth of external tooth 21 and internal tooth 11 is disposed as 120.
The afterbody of sharf 2 is provided with screw thread, when sharf 2 passes through through cutting ferrule 1 and the circular hole of the central part of wheel hub 6, the top of sharf 2
External tooth 21 and the engagement of internal tooth 11 in the cutting ferrule 1, the afterbody of sharf 2 then with being spirally connected positioned at the nut 3 of the opposite side of wheel hub 6, from
And sharf 2 is set to be fixed on together with cutting ferrule 1 on wheel hub 6.In stopped status, pass through the He of 2 external tooth of manual setting sharf 21
The tooth matching angle of the internal tooth 11 of cutting ferrule 1, the angle of the blade 7 on sharf 2 can be adjusted, greatly reduces using and tieing up for unit
Protect cost.Also, because the back lash between external tooth 21 and internal tooth 11 only has 0.1-0.2mm, i.e. sharf 2 He of external tooth 21
The engagement of internal tooth 11 of cutting ferrule 1 is not in be loosened between external tooth 21 and internal tooth 11 closely.Therefore, in propeller fan
It in operation process, can prevent fan blade from angle drift occurring in real-world operation, avoid triggering fan performance problem, so as to
The service behaviour of blower fan is ensure that, improves the security performance of blower fan.
Nut 3 is made up of the forging process of 42CrNiMo6 materials, and the afterbody with sharf 2 is conjunction.In order to prevent blower fan
There is loosening situation in nut 3 in operation process, and the afterbody of nut 3 is provided with guard plate 4.The foot of nut 3 is provided with ten
Individual neck, three necks are provided with the relevant position of sharf 2, when tightening rotating nuts 3, it may appear that on nut 3
Some neck one of (ten neck) and some necks one of (three neck) position consistency on sharf 2, now from rotation
The neck of nut 3 inserts guard plate 4, guard plate 4 is embedded in into neck corresponding to sharf 2, sharf 2 passes through peace with rotating nuts 3
Full plate 4 is fixed, then installs back-up ring 5 at the rear portion of guard plate 4, you can is locked nut 3, is prevented nut 3 in blower fan operation process
It is middle to occur loosening situation about retreating.
It should be noted last that above embodiment is only illustrating the technical solution of the utility model rather than limit
System, although the utility model is described in detail with reference to example, it will be understood by those within the art that, can be right
The technical solution of the utility model is modified or equivalent substitution, without departing from the spirit and model of technical solutions of the utility model
Enclose, it all should cover among right of the present utility model.
Claims (6)
- A kind of 1. blade angle locking device of propeller fan, it is characterised in that：Including being fixed on ventilator hub (6) side Cutting ferrule (1), the sharf (2) that is fixedly connected with blade (7) of top and be arranged on wheel hub (6) opposite side and the blade The nut (3) of axle (2) afterbody connection, the inner ring surface of the cutting ferrule (1) set internal tooth (11), outer at the top of the sharf (2) Disc sets the external tooth (21) matched with the internal tooth (11), passes through the external tooth (21) and internal tooth at the top of the sharf (2) (11) engagement is in the cutting ferrule (1).
- 2. the blade angle locking device of propeller fan according to claim 1, it is characterised in that：The nut (3) Rear portion set prevent nut (3) loosen guard plate (4), the guard plate (4) with back-up ring (5) fixation.
- 3. the blade angle locking device of propeller fan according to claim 1, it is characterised in that：The cutting ferrule (1) Internal tooth number be 100-140, the external tooth number of the sharf (2) is 100-140.
- 4. the blade angle locking device of propeller fan according to claim 3, it is characterised in that：The cutting ferrule (1) Internal tooth and the sharf (2) external tooth between matching gap be 0.1-0.2mm.
- 5. the blade angle locking device of propeller fan according to claim 1, it is characterised in that：The cutting ferrule (1) It is fixedly connected by screw with wheel hub (6).
- 6. the blade angle locking device of propeller fan according to claim 1, it is characterised in that：The sharf (2) it is fixedly connected by screw with blade (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720796597.4U CN207004923U (en) | 2017-07-03 | 2017-07-03 | The blade angle locking device of propeller fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720796597.4U CN207004923U (en) | 2017-07-03 | 2017-07-03 | The blade angle locking device of propeller fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207004923U true CN207004923U (en) | 2018-02-13 |
Family
ID=61453114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720796597.4U Active CN207004923U (en) | 2017-07-03 | 2017-07-03 | The blade angle locking device of propeller fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207004923U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111288015A (en) * | 2020-04-02 | 2020-06-16 | 武汉市研华智造环保科技有限公司 | Angle-adjustable fan blade assembly |
-
2017
- 2017-07-03 CN CN201720796597.4U patent/CN207004923U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111288015A (en) * | 2020-04-02 | 2020-06-16 | 武汉市研华智造环保科技有限公司 | Angle-adjustable fan blade assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200107 Address after: 110000 no.21-1, jinlonghu street, Yuhong District, Shenyang City, Liaoning Province Patentee after: Shenyang Blower Group ventilation equipment Technology Co., Ltd Address before: 110000 Jinlong Lake Street, Shenyang, Liaoning Province, No. 21 Patentee before: Shenyang Blower Ventilation Equipment Co., Ltd. |