CN202597240U - A mechanical adjustment device for blades of an axial flow fan - Google Patents
A mechanical adjustment device for blades of an axial flow fan Download PDFInfo
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- CN202597240U CN202597240U CN 201220101364 CN201220101364U CN202597240U CN 202597240 U CN202597240 U CN 202597240U CN 201220101364 CN201220101364 CN 201220101364 CN 201220101364 U CN201220101364 U CN 201220101364U CN 202597240 U CN202597240 U CN 202597240U
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- blade
- screw rod
- flow fan
- blades
- main shaft
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Abstract
The utility model provides a mechanical adjustment device for blades of an axial flow fan. The mechanical adjustment device solves the problem of time consumption, labor consumption, and safety hazard of blade angle adjustment of the axial flow fan in the prior art. The mechanical adjustment device comprises a fan spindle, blades, an adjustment transmission mechanism, and an adjustment execution mechanism. The fan spindle is a hollow spindle and the blades are connected with blade shafts through blade sleeves. The adjustment transmission mechanism comprises a screw rod and a hand wheel, wherein the screw rod passes through the fan spindle and is connected with the hand wheel fixedly at the lower end. The adjustment execution mechanism comprises a bearing pedestal assembly, a hinge pedestal and connecting rods, wherein the bearing pedestal assembly is in screwed connection with the upper portion of the screw rod and is connected fixedly with the hinge pedestal disposed under the bearing pedestal assembly, and two ends of each connecting rod are hinged with the hinge pedestal and a shaft head of each blade shaft respectively. The mechanical adjustment device enables the angle of the blades of the axial flow fan to be adjusted through rotation of the hand wheel disposed at the end of the fan spindle. The mechanical adjustment device can improve working efficiency and precision of blade angle adjustment, reduce labor intensity of workers greatly and prevent unnecessary operation dangers.
Description
Technical field
The utility model relates to a kind of blower fan technology, particularly axial-flow fan blade mechanic adjustment unit.
Background technique
It is moving that the gas of axial-flow blower is parallel to the blower fan axial flow; Usually be used in higher and the occasion that pressure is relatively low of traffic requirement, axial-flow blower can be widely used in place ventilation such as metallurgy, chemical industry, light industry, food, medicine and civil building or strengthen the occasion of heat radiation.At present, usedly in the air cooling device of industries such as domestic petrochemical industry, metallurgy, electric power, the cooling tower be mostly powerful axial-flow blower.The main composition of axial-flow blower comprises motor, main shaft and blade, and by the driven by motor main axis rotation, main shaft drives the blade rotation.Axial-flow blower in use; Sometimes need adjust the angle of blade according to working state; Common axial-flow fan blade angle modulation needs to shut down earlier, and the staff stands in the air duct of framework, unclamps four bolts on the wheel hub sleeve; Measured the required angle of fan blade with angle ruler then, tightened four bolts again.Regulate the blade angle on each wheel hub sleeve successively.Above-mentioned adjustment process is time and effort consuming not only, and the staff stands on the framework, is in the high temperature narrow space and operates, and work under bad environment has potential safety hazard.
The model utility content
The utility model is used to overcome the defective of prior art and provides a kind of through operated by handwheel, adjusts the axial-flow fan blade mechanic adjustment unit of blade angle fast, accurately.
The alleged problem of the utility model is solved by following technological scheme:
A kind of axial-flow fan blade mechanic adjustment unit; Specialization is: it comprises blower fan main shaft, blade, adjusting driving mechanism, regulates actuator; Said blower fan main shaft is a hollow shaft, and said vanes blade oar cover is connected with sharf, and said adjusting driving mechanism comprises screw rod and handwheel; Screw rod passes blower fan main shaft, the affixed handwheel in its lower end; Said adjusting actuator comprises bearing block assembly, hinge base and connecting rod, and bearing block assembly is connected with screw rod top spiral, the affixed hinge base that is positioned at its underpart of bearing block assembly, and said connecting rod two ends are the spindle nose of hinged hinge base and sharf respectively.
Above-mentioned axial-flow fan blade mechanic adjustment unit, said driving mechanism also is provided with indicator panel and angle scale, and said angle scale and handwheel are fixed, and indicator panel is fixed on blower fan main shaft end, corresponding with angle scale.
Corresponding each sharf is distinguished in above-mentioned axial-flow fan blade mechanic adjustment unit, said each connecting rod position that is provided with on hinge base, and the spindle nose sectional shape of said sharf is a cydariform.
Above-mentioned axial-flow fan blade mechanic adjustment unit also is provided with female fully, female fully between blower fan main shaft axle head and handwheel on the said screw rod.
The utility model is directed against the problem that has axial-flow fan blade angular adjustment time and effort consuming now and have potential safety hazard and improves, and a kind of mechanic adjustment unit that can adjust angle of fan leaves quickly and easily is provided.This device drives bearing block assembly through screw-drive mechanism and moves; Bearing block assembly drives hinge base and moves; Hinge base rotates through connecting rod driven vane axle, realizes the rapid adjustment of blade angle, and the angular dimension of adjustment can be confirmed through the indicator panel, the angle scale that are arranged on the handwheel place.Adopt the utility model can improve the working efficiency and adjustment precision of blade angle adjustment, and greatly reduce staff's labor intensity, avoid unnecessary operational hazards to take place.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is that the A of Fig. 1 is to zoomed-in view.
The label implication is following among the figure: 1. screw rod; 2. handwheel; 3. be equipped with female; 4. screw; 5. blower fan main shaft; 6. bearing unit; 6-1. interior cover; 6-2. thrust-bearing; 6-3. overcoat; 7. hinge base; 8. housing; 9. connecting rod; 10. sharf; 11. blade oar cover; 12. blade; 13. indicator panel; 14. angle scale.
Embodiment
Referring to Fig. 1, the utility model comprises blower fan main shaft 5, blade 12, regulates driving mechanism and regulates actuator.Blower fan main shaft 5 is a hollow shaft, and blade installation is on blade oar cover 11, and blade oar cover is affixed with sharf 10, and blower fan main shaft is rotated by motor driving, drives the sharf rotation.Said adjusting driving mechanism comprises screw rod 1, handwheel 2, indicator panel 13 and angle scale 14; Screw rod 1 passes blower fan main shaft 5, and its lower end is fixedly connected with handwheel, i.e. handwheel 2 rotations drive screw rod and rotate synchronously; Angle scale 14 is fixed with handwheel; Indicator panel 13 is fixed on the end of blower fan main shaft 5 through screw 4, and it is corresponding with angle scale, and both constitute the cue mark of blade angle adjustment jointly.Said adjusting actuator comprises bearing block assembly 6, hinge base 7 and connecting rod 9; Bearing block assembly comprises interior cover 6-1, thrust-bearing 6-2 and the overcoat 6-3 that is assembled into one; Cover is connected with screw rod top spiral wherein, and the affixed hinge base 7 that is positioned at its underpart of overcoat is when screw rod rotates; Bearing block assembly 6 whole moving drive hinge base 7 and move.
Referring to Fig. 1, Fig. 2; Said hinge base 7 is positioned at housing 8; The spindle nose position of hinged hinge base and sharf 10 is distinguished at said connecting rod two ends, and corresponding each sharf is distinguished in the be provided with position of each connecting rod on hinge base, and the spindle nose sectional shape of said sharf 10 is a cydariform.When hinge base moves, drivening rod 9 motions, connecting rod driven vane axle 10 rotates, and reaches the purpose of synchronous each blade angle of adjustment.
Still, also be provided with mother 3 fully on the screw rod 1, when mother needs to adjust blade angle fully, need unclamp mother fully earlier between blower fan main shaft axle head and handwheel, after blade angle is adjusted, will be equipped with mother's locking referring to Fig. 1.Handwheel is installed on the screw rod by key, and more the ventilating fan belt need not dismantled any part.If change belt pulley, only need to pull down handwheel, just can change, simple to operate, time saving and energy saving.
Claims (4)
1. axial-flow fan blade mechanic adjustment unit; It is characterized in that: it comprises blower fan main shaft (5), blade (12), regulates driving mechanism, regulates actuator; Said blower fan main shaft (5) is a hollow shaft, and said vanes blade oar cover (11) is connected with sharf (10), and said adjusting driving mechanism comprises screw rod (1) and handwheel (2); Screw rod passes blower fan main shaft, the affixed handwheel in its lower end; Said adjusting actuator comprises bearing block assembly (6), hinge base (7) and connecting rod (9); Bearing block assembly is connected with screw rod top spiral; The affixed hinge base that is positioned at its underpart of bearing block assembly, the spindle nose of said connecting rod two ends hinged hinge base of difference and sharf.
2. axial-flow fan blade mechanic adjustment unit according to claim 1; It is characterized in that: said driving mechanism also is provided with indicator panel (13) and angle scale (14); Said angle scale and handwheel are fixed, and indicator panel is fixed on blower fan main shaft (5) end, corresponding with angle scale.
3. axial-flow fan blade mechanic adjustment unit according to claim 2 is characterized in that: corresponding each sharf is distinguished in the be provided with position of said each connecting rod on hinge base, and the spindle nose sectional shape of said sharf (10) is a cydariform.
4. according to claim 1 or 2 or 3 described axial-flow fan blade mechanic adjustment unit, it is characterized in that: also be provided with fully female (3) on the said screw rod (1), be equipped with female between blower fan main shaft axle head and handwheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220101364 CN202597240U (en) | 2012-03-19 | 2012-03-19 | A mechanical adjustment device for blades of an axial flow fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220101364 CN202597240U (en) | 2012-03-19 | 2012-03-19 | A mechanical adjustment device for blades of an axial flow fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202597240U true CN202597240U (en) | 2012-12-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220101364 Expired - Fee Related CN202597240U (en) | 2012-03-19 | 2012-03-19 | A mechanical adjustment device for blades of an axial flow fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202597240U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017148177A1 (en) * | 2016-03-04 | 2017-09-08 | 太原理工大学 | Two-stage blade adjusting device for counter-rotating axial-flow fan |
| CN109519399A (en) * | 2017-09-18 | 2019-03-26 | 福建闽东电机股份有限公司 | A kind of executable positive/negative-pressure generates the blower and its implementation of switching |
| CN110206758A (en) * | 2019-07-18 | 2019-09-06 | 浙江沈力防爆机电有限公司 | A kind of air quantity adjustable fan based on adjusting fan blade angles |
-
2012
- 2012-03-19 CN CN 201220101364 patent/CN202597240U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017148177A1 (en) * | 2016-03-04 | 2017-09-08 | 太原理工大学 | Two-stage blade adjusting device for counter-rotating axial-flow fan |
| US10612559B2 (en) | 2016-03-04 | 2020-04-07 | Taiyuan University Of Technology | Two-stage blade adjusting device for counter-rotating axial flow fan |
| CN109519399A (en) * | 2017-09-18 | 2019-03-26 | 福建闽东电机股份有限公司 | A kind of executable positive/negative-pressure generates the blower and its implementation of switching |
| CN110206758A (en) * | 2019-07-18 | 2019-09-06 | 浙江沈力防爆机电有限公司 | A kind of air quantity adjustable fan based on adjusting fan blade angles |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121212 Termination date: 20130319 |