CN114483650A - Fan blade extension structure - Google Patents
Fan blade extension structure Download PDFInfo
- Publication number
- CN114483650A CN114483650A CN202111678560.9A CN202111678560A CN114483650A CN 114483650 A CN114483650 A CN 114483650A CN 202111678560 A CN202111678560 A CN 202111678560A CN 114483650 A CN114483650 A CN 114483650A
- Authority
- CN
- China
- Prior art keywords
- blade
- magnetic block
- extension
- hollow groove
- outer side
- 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.)
- Pending
Links
- 238000007789 sealing Methods 0.000 claims description 14
- 239000003973 paint Substances 0.000 claims description 4
- 238000012856 packing Methods 0.000 claims 3
- 239000004606 Fillers/Extenders Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/38—Blades
- F04D29/388—Blades characterised by construction
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/325—Rotors specially for elastic fluids for axial flow pumps for axial flow fans
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/34—Blade mountings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/666—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by means of rotor construction or layout, e.g. unequal distribution of blades or vanes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a fan blade extension structure which comprises a central rotating shaft, wherein an extension mechanism is arranged on the outer side of the central rotating shaft, the extension mechanism comprises a blade, the blade is positioned on the outer side of the central rotating shaft, a hollow groove is formed in the blade, a limiting screw rod penetrates through and is connected to the surface of one side of the blade, one end of the limiting screw rod is positioned on the inner side of the hollow groove, the surface of the bottom end of the inner side of the hollow groove is fixedly connected with a first magnetic block, the surface of the inner side of the hollow groove is fixedly connected with a second magnetic block, the inner side of the hollow groove is movably connected with an extension blade, the outer side of the extension blade is fixedly connected with a third magnetic block, and the third magnetic block is movably connected to the first magnetic block and the second magnetic block; through the extension mechanism that sets up, can let the blade take out or fill in extension blade according to user's needs, let the blade on this device possess stronger flexibility to different demands under the cooperation different users, different service environment also can put into use through the adjustment under some special circumstances, improved the general nature of blade.
Description
Technical Field
The invention relates to the technical field of fan parts, in particular to a fan blade extension structure.
Background
The fan is a driven fluid machine which increases the pressure of gas and discharges the gas by means of input mechanical energy. The blower is a Chinese habit abbreviation for gas compression and gas conveying machinery, and the blower generally comprises a ventilator, a blower and a wind driven generator.
Fans are widely used for ventilation, dust exhaust and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings, and for ventilation and draught of boilers and industrial furnaces and kilns; cooling and ventilation in air conditioning equipment and household appliances; drying and selecting grains, wind source of wind tunnel and inflation and propulsion of air cushion ship;
the blades assembled on the existing fan are generally fixed in size and cannot be extended, the blades are not suitable for use under some special conditions, difficulty is added for work, and therefore a fan blade extension structure is provided.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a fan blade extending structure which can enable blades to have an extending function.
In order to solve the technical problems, the invention provides the following technical scheme: a fan blade extension structure comprises a central rotating shaft, an extension mechanism is arranged on the outer side of the central rotating shaft and comprises blades, the blades are located on the outer side of the central rotating shaft, hollow grooves are formed in the blades, a limiting screw rod penetrates through and is connected to the surface of one side of each blade, one end of each limiting screw rod is located on the inner side of each hollow groove, a first magnetic block is fixedly connected to the surface of the bottom end of the inner side of each hollow groove, a second magnetic block is fixedly connected to the surface of the inner side of each hollow groove, an extension blade is movably connected to the inner side of each hollow groove, a third magnetic block is fixedly connected to the outer side of each extension blade, and the third magnetic blocks are movably connected to the first magnetic block and the second magnetic block;
the blade comprises a blade tip, a blade tip sleeve is further bonded on the blade tip, and the bonding length is 0.1-0.2 times of the total length of the blade;
the length of the overlapping area of the extending part and the blade is 1/3-1/2 of the total length of the blade.
The edge sealing mechanism comprises a filling strip, the filling strip is located on the inner side of the empty groove, an outer sealing strip fixedly connected with the surface of one side of the filling strip is located on the outer side of the blade, a second thread groove is formed in the inner side of the outer sealing strip, a first thread groove is formed in the surface of one side of the blade, and a screw rod is connected with the inner sides of the second thread groove and the first thread groove in a threaded manner.
The surfaces of the blades are smooth, and the blades are annularly distributed around the outer side of the central rotating shaft.
The first magnetic block, the second magnetic block and the third magnetic block are all in annular structures, and the inner diameter of the first magnetic block is nine times of the zero point of the inner diameter of the third magnetic block.
Wherein, the surface of the extension blade is smooth, and the width of the extension blade is seven times of the zero point of the width of the blade.
Wherein, the screw rod outside is provided with the anti-rust paint, just the quantity of screw rod is provided with two.
Compared with the prior art, the invention can achieve the following beneficial effects:
1. the extension mechanism can be arranged, so that the blades can be taken out or plugged into the extension blades according to the needs of users, the blades on the device have stronger flexibility so as to match different requirements of different users and different use environments, and can be adjusted to be put into use under some special conditions, and the universality of the blades is improved;
2. through the banding mechanism that sets up, can carry out the banding to the edge of blade on the basis of extension mechanism and handle, let the blade air can not enter into the dead slot when moving to produce the noise that can't eliminate.
Drawings
FIG. 1 is a schematic top view of the present invention;
FIG. 2 is an enlarged schematic view of the invention at A of FIG. 1;
FIG. 3 is an enlarged view of the structure of FIG. 2 at B according to the present invention;
FIG. 4 is an enlarged view of the structure of FIG. 2 at C in accordance with the present invention;
wherein: 1. a central rotating shaft; 2. a blade; 3. an extension blade; 20. a limit screw; 21. an empty groove; 22. a first magnetic block; 23. a second magnetic block; 24. a first thread groove; 31. a third magnetic block; 32. an outer seal; 33. filling the strip; 34. a second thread groove; 35. a screw.
Detailed Description
Example (b):
as shown in fig. 1-4, a fan blade extension structure includes a central rotating shaft 1, an extension mechanism is disposed on an outer side of the central rotating shaft 1, the extension mechanism includes a blade 2, the blade 2 is located on an outer side of the central rotating shaft 1, a hollow groove 21 is formed in the blade 2, a side surface of the blade 2 is connected with a limit screw 20 in a penetrating manner, one end of the limit screw 20 is located on an inner side of the hollow groove 21, a first magnetic block 22 is fixedly connected to a bottom end surface of the inner side of the hollow groove 21, a second magnetic block 23 is fixedly connected to a surface of the inner side of the hollow groove 21, an extension blade 3 is movably connected to the inner side of the hollow groove 21, a third magnetic block 31 is fixedly connected to an outer side of the extension blade 3, and the third magnetic block 31 is movably connected to the first magnetic block 22 and the second magnetic block 23;
when the extension blade 3 needs to be pulled out, the extension blade 3 is pulled outwards, so that the third magnetic block 31 is separated from the first magnetic block 22, slides outwards along the empty groove 21 until the third magnetic block is contacted and connected with the second magnetic block 23, and finally the limit screw 20 is connected with the blade 2, so that the limit screw can clamp the extension blade 3; can let blade 2 take out or fill in extension blade 3 according to user's needs, let blade 2 on this device possess stronger flexibility to different demands under the different user of cooperation, the different service environment also can put into use through the adjustment under some special circumstances, improved blade 2's general use nature.
In other embodiments, the present embodiment discloses a filling strip 33 and an outer sealing strip 32, please refer to fig. 1, fig. 2, and fig. 4, further including a sealing mechanism, where the sealing mechanism includes a filling strip 33, the filling strip 33 is located inside the empty slot 21, an outer sealing strip 32 is fixedly connected to a surface of one side of the filling strip 33, the outer sealing strip 32 is located outside the blade 2, a second thread groove 34 is formed on an inner side of the outer sealing strip 32, a first thread groove 24 is formed on a surface of one side of the blade 2, and a screw 35 is threadedly connected to inner sides of the second thread groove 34 and the first thread groove 24;
the filling strip 33 is aligned with the empty groove 21 and is plugged in, and then the second thread groove 34 and the first thread groove 24 are connected through the connecting part 25, so that the outer sealing strip 32 and the filling strip 33 can be installed on the edge of the blade 2; the edge sealing treatment can be carried out on the edge of the blade 2 on the basis of the extension mechanism, so that air cannot enter the empty groove 21 when the blade 2 operates, and noise which cannot be eliminated is generated.
In other embodiments, the present embodiment discloses the blades 2, as shown in fig. 1, the surfaces of the blades 2 are smooth, and the blades 2 are annularly distributed around the outer side of the central rotating shaft 1; through establishing blade 2 surface into glossy, can be better rotate, reduce and the air between the resistance, and set up a plurality of blades 2, then can let the wind-force that this device produced stronger.
In other embodiments, the present embodiment discloses the first magnetic block 22, the second magnetic block 23 and the third magnetic block 31, as shown in fig. 2, the first magnetic block 22, the second magnetic block 23 and the third magnetic block 31 are all in a ring structure, and the inner diameter of the first magnetic block 22 is nine times of the inner diameter of the third magnetic block 31; by setting the first magnetic block 22, the second magnetic block 23 and the third magnetic block 31 to be annular, the contact area of the third magnetic block 31 is large enough to ensure the stability of the extension blade 3 no matter the third magnetic block 31 is connected with the first magnetic block 22 or the second magnetic block 23, and the inner diameter of the first magnetic block 22 is nine times of the zero point of the inner diameter of the third magnetic block 31, so that the area of the third magnetic block 31 is smaller than that of the first magnetic block 22, and the third magnetic block 31 is ensured to be capable of touching and connecting with the first magnetic block 22.
In other embodiments, the present embodiment discloses the extending blade 3, as shown in fig. 2, the surface of the extending blade 3 is smooth, and the width of the extending blade 3 is seven times of the zero point of the width of the blade 2; by making the surface of the extender blade 3 smooth so that it is less resistant to space during use, and making the width of the extender blade 3 seven times the width of the blade 2, the extender blade 3 can be better placed in the blade 2.
In other embodiments, the present embodiment discloses the screws 35, as shown in fig. 2 and 4, the outer side of the screw 35 is provided with the anti-rust paint, and the number of the screws 35 is two; set up the anti-rust paint in the screw rod 35 outside, can prolong screw rod 35 life, set up two screw rods 35, let outer strip 32 be connected more stably with blade 2.
Security analysis
1) Ultimate load
The applicant calculates the ultimate loads of the key parts of the unit, and compares the ultimate loads at the blade root, the hub center, the tower top and the tower bottom with the design loads, which are detailed in table 1.
Table 1: unit ultimate load comparison
2) Fatigue load
The applicant calculates the limit load of the key part of the unit, and compares the fatigue load of the blade root, the hub center, the tower top and the tower bottom with the design load, which is detailed in table 2.
According to the comparison results of tables 1 and 2, the critical part limit load and fatigue are not exceeded. And according to the fatigue strength checking result, confirming that the fatigue strength of each key part of the machine set can meet the use requirement of the project.
Claims (6)
1. The utility model provides a fan blade extension structure, includes central pivot (1), its characterized in that: an extension mechanism is arranged on the outer side of the central rotating shaft (1), the extension mechanism comprises a blade (2), the blade (2) is located on the outer side of the central rotating shaft (1), a hollow groove (21) is formed in the blade (2), a limiting screw (20) penetrates through and is connected to one side surface of the blade (2), one end of the limiting screw (20) is located on the inner side of the hollow groove (21), a first magnetic block (22) is fixedly connected to the bottom end surface of the inner side of the hollow groove (21), a second magnetic block (23) is fixedly connected to the surface of the inner side of the hollow groove (21), an extension blade (3) is movably connected to the inner side of the hollow groove (21), a third magnetic block (31) is fixedly connected to the outer side of the extension blade (3), and the third magnetic block (31) is movably connected to the first magnetic block (22) and the second magnetic block (23);
the blade comprises a blade tip, a blade tip sleeve is further bonded on the blade tip, and the bonding length is 0.1-0.2 times of the total length of the blade;
the length of the overlapping area of the extending part and the blade is 1/3-1/2 of the total length of the blade.
2. A fan blade extension structure according to claim 1, wherein: still include banding mechanism, banding mechanism is including packing strip (33), it is inboard that packing strip (33) are located dead slot (21), packing strip (33) one side fixed surface is connected with outer strip of paper used for sealing (32), outer strip of paper used for sealing (32) are located blade (2) outside, second thread groove (34) have been seted up to outer strip of paper used for sealing (32) inboard, first thread groove (24) have been seted up to blade (2) a side surface, second thread groove (34) and the equal threaded connection in first thread groove (24) inboard have screw rod (35).
3. A fan blade extension structure according to claim 1, wherein: the surface of each blade (2) is smooth, and the blades (2) are annularly distributed around the outer side of the central rotating shaft (1).
4. A fan blade extension structure according to claim 1, wherein: the first magnetic block (22), the second magnetic block (23) and the third magnetic block (31) are all in annular structures, and the inner diameter of the first magnetic block (22) is nine times of the zero point of the inner diameter of the third magnetic block (31).
5. A fan blade extension structure according to claim 1, wherein: the surface of the extension blade (3) is smooth, and the width of the extension blade (3) is seven times of the zero point of the width of the blade (2).
6. A fan blade extension structure according to claim 2, wherein: the outer side of the screw rod (35) is provided with antirust paint, and the number of the screw rods (35) is two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111678560.9A CN114483650A (en) | 2021-12-31 | 2021-12-31 | Fan blade extension structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111678560.9A CN114483650A (en) | 2021-12-31 | 2021-12-31 | Fan blade extension structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114483650A true CN114483650A (en) | 2022-05-13 |
Family
ID=81509493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111678560.9A Pending CN114483650A (en) | 2021-12-31 | 2021-12-31 | Fan blade extension structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114483650A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204267366U (en) * | 2014-11-15 | 2015-04-15 | 温岭市灵其防爆机电有限公司 | A kind of flexible controlled flabellum |
| US20190101128A1 (en) * | 2017-10-01 | 2019-04-04 | Papa Abdoulaye MBODJ | Wing or blade design for wingtip device, rotor, propeller, turbine, and compressor blades with energy regeneration |
| CN111425458A (en) * | 2020-03-16 | 2020-07-17 | 毛永波 | Anti-dropping safety vision and auditory alarm for retractable fan blade of invisible fan |
| CN211820005U (en) * | 2020-01-14 | 2020-10-30 | 广东美的环境电器制造有限公司 | Air supply device |
| CN112610515A (en) * | 2020-12-31 | 2021-04-06 | 徐州夏立普机电有限公司 | Large cross industrial ceiling fan capable of adjusting length of fan blades |
-
2021
- 2021-12-31 CN CN202111678560.9A patent/CN114483650A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204267366U (en) * | 2014-11-15 | 2015-04-15 | 温岭市灵其防爆机电有限公司 | A kind of flexible controlled flabellum |
| US20190101128A1 (en) * | 2017-10-01 | 2019-04-04 | Papa Abdoulaye MBODJ | Wing or blade design for wingtip device, rotor, propeller, turbine, and compressor blades with energy regeneration |
| CN211820005U (en) * | 2020-01-14 | 2020-10-30 | 广东美的环境电器制造有限公司 | Air supply device |
| CN111425458A (en) * | 2020-03-16 | 2020-07-17 | 毛永波 | Anti-dropping safety vision and auditory alarm for retractable fan blade of invisible fan |
| CN112610515A (en) * | 2020-12-31 | 2021-04-06 | 徐州夏立普机电有限公司 | Large cross industrial ceiling fan capable of adjusting length of fan blades |
Non-Patent Citations (1)
| Title |
|---|
| 邹立伟: "电力工业" * |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220513 |