CN219366431U - Suction hood is prevented to automatic blowback system in area - Google Patents
Suction hood is prevented to automatic blowback system in area Download PDFInfo
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- CN219366431U CN219366431U CN202320830368.5U CN202320830368U CN219366431U CN 219366431 U CN219366431 U CN 219366431U CN 202320830368 U CN202320830368 U CN 202320830368U CN 219366431 U CN219366431 U CN 219366431U
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- bevel gear
- transmission shaft
- fan
- suction
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Abstract
The utility model discloses an anti-suction cover with an automatic back-blowing system, which relates to the technical field of axial flow fans and comprises an axial flow fan, an anti-suction net cover, a connecting cover and a back-blowing cover, wherein a first fan blade and a first bevel gear are respectively and fixedly arranged on a first transmission shaft, a fourth bevel gear and a second fan blade are respectively and fixedly arranged on a second transmission shaft, a back-blowing pipe is fixedly arranged at an air outlet of a gas check valve, and a pull rod is fixedly arranged at the inner end of a stop block. According to the utility model, through the matching arrangement of the first transmission shaft, the first fan blade, the first bevel gear, the second bevel gear, the rotating shaft, the third bevel gear, the second transmission shaft, the fourth bevel gear, the second fan blade, the gas check valve and the back-blowing pipe, sundries on the sundries anti-suction net cover can be blown off, normal work of the fan is ensured, the protection capability is improved, and through the matching arrangement of the mounting frame, the connecting groove, the sleeve, the pull rod, the reset spring and the stop dog, the quick dismounting of the anti-suction net cover can be realized, and the daily use is facilitated.
Description
Technical Field
The utility model relates to the technical field of axial flow fans, in particular to an anti-suction cover with an automatic back-blowing system.
Background
The axial flow fan has very wide application, namely, the air flow in the same direction with the axis of the fan blade, such as an electric fan, and the fan of the air conditioner external unit is an axial flow running fan. This is called "axial flow" because the gas flows parallel to the fan axis. Axial fans are commonly used in applications where flow requirements are high and pressure requirements are low. The axial flow fan fixes the position and moves the air. The axial flow fan mainly comprises a fan impeller and a shell, and has a simple structure but very high data requirements. The anti-suction net cover of the axial flow fan is a part which plays a role in protecting the axial flow fan, and can prevent foreign objects from being sucked into the fan besides playing a role in protecting the axial flow fan.
The utility model discloses a mesh enclosure of an axial flow fan in the prior art CN 212003771U, including first mesh enclosure layer and second mesh enclosure layer which are axially arranged and the central axis coincides, a plurality of reinforcing flat steel, dish muscle and supporting ribs, although the utility model effectively avoids the impact force generated by simultaneous collision, thereby degrading the sound pressure value generated by each frequency point when the air flow of a ventilator passes through the mesh enclosure, effectively reducing the whole noise and the vibration generated by the fan, but the utility model and the traditional fan anti-suction mesh enclosure can only carry out simple protection, when the outside of the mesh enclosure is adsorbed with sundries (such as plastic film, leaves and the like), the sundries are difficult to automatically drop from the mesh enclosure due to the suction force of the fan, the air inflow of the fan is influenced, and the sundries also have the risk of being involved in the fan, so that the internal components of the fan are damaged, and the traditional anti-suction mesh enclosure is mainly fixedly arranged on the fan through a plurality of screws, the assembly and disassembly of the anti-suction mesh enclosure is not convenient enough, and the mesh enclosure can be generally detached when the fan blades of the fan are cleaned, so that the fixing mode also influences the daily maintenance of the fan and the working efficiency is improved.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model provides an anti-suction cover with an automatic back-blowing system, which solves the problems in the prior art.
In order to achieve the above purpose, the utility model is realized by the following technical scheme: the anti-suction cover comprises an axial flow fan, an anti-suction net cover, a connecting cover and a back-blowing cover, wherein a first transmission shaft is rotatably arranged in the middle of the anti-suction net cover through a bearing, a first fan blade and a first bevel gear are fixedly arranged on the first transmission shaft respectively, a support frame is welded in the connecting cover, a rotating shaft is rotatably arranged in the support frame, a second bevel gear meshed with the first bevel gear is fixedly arranged at one end of the rotating shaft, a second transmission shaft is rotatably arranged in the back-blowing cover through the bearing, a fourth bevel gear and a second fan blade are fixedly arranged on the second transmission shaft respectively, a third bevel gear communicated with the fourth bevel gear is fixedly arranged at the other end of the rotating shaft, a gas check valve communicated with the back-blowing cover is fixedly arranged at the outer end of the back-blowing cover, and a back-blowing pipe is fixedly arranged at the gas outlet of the gas check valve;
the outside welding of axial fan air intake has the mount, and threaded mounting has the bolt on the mount, and the periphery welding of connecting cover has the mounting bracket, and the spread groove has been seted up to the inside of mounting bracket, and the mounting bracket cup joints on the bolt through the spread groove, and the inside slidable mounting of mounting bracket has the dog of butt in the bolt lower surface, and the inner fixed mounting of dog has the pull rod, the surface welding of mounting bracket has the sleeve of cup jointing on the pull rod, and the outside of pull rod is located mounting bracket and sleeve and cup joints reset spring.
Optionally, the shape of the connecting cover is cylindrical, the anti-suction net cover is fixedly arranged on the connecting cover, and the anti-suction net cover is arranged at the air inlet of the axial flow fan through the connecting cover.
Optionally, the first transmission shaft is coaxial with the connecting cover, the first transmission shaft, the first fan blades and the first bevel gears are all located in the connecting cover, and the first fan blades and the first bevel gears are distributed along the axial direction of the first transmission shaft.
Optionally, the inside of blowback cover is the cavity form of both ends all open-ended, and the one end fixed mounting that the gas check valve was kept away from to the blowback cover has the dust screen, blowback cover fixed connection is in the surface of connecting cover, and the quantity of blowback cover is a plurality of, and a plurality of blowback cover is annular array with the axis of connecting cover and distributes.
Optionally, the fourth bevel gear and the second fan blade are arranged along the axial direction of the second transmission shaft, and the third bevel gear is rotatably installed in the back-blowing cover through a rotating shaft.
Optionally, the mounting bracket butt is on the mount, the shape of spread groove is the rectangle, and the spread groove downwardly extending to the lower surface of mounting bracket.
Optionally, the stop block is inserted into the connecting groove, and the outer end of the stop block is an inclined plane.
Optionally, the shape of pull rod is T type, and the pull rod outwards extends the sleeve, reset spring's one end and telescopic internal surface butt in, reset spring's the other end and dog butt.
The utility model provides an anti-suction cover with an automatic back-blowing system, which has the following beneficial effects:
according to the suction hood with the automatic back-blowing system, through the matching arrangement of the first transmission shaft, the first fan blade, the first bevel gear, the second bevel gear, the rotating shaft, the third bevel gear, the second transmission shaft, the fourth bevel gear, the second fan blade, the gas check valve and the back-blowing pipe, when sundries exist on the suction hood, the sundries can be blown down by high-speed gas blown out by the back-blowing pipe, the sundries are prevented from affecting the air inflow of the axial flow fan, the normal work of the axial flow fan is ensured, the sundries are effectively prevented from being wound into the fan, and the protection capability of the axial flow fan is improved;
this take automatic blowback system's anti-suction hood sets up through mounting bracket, spread groove, sleeve, pull rod, reset spring and the cooperation of dog, can realize the quick assembly disassembly to anti-suction screen panel, for the fixed mode of a plurality of screws, this dismouting mode can be so that to the dismouting to anti-suction screen panel convenient high efficiency more, moreover very easy to operate, the daily use of being convenient for to improve to a certain extent daily efficiency to axial fan maintenance work, be fit for extensively using widely.
Drawings
FIG. 1 is a schematic front perspective view of the present utility model;
fig. 2 is a schematic rear-view perspective structure of the anti-suction net cover of the utility model;
FIG. 3 is a schematic side sectional partial structure of the present utility model;
FIG. 4 is an enlarged schematic view of the structure of FIG. 3A according to the present utility model;
FIG. 5 is an enlarged schematic view of the structure of FIG. 3B according to the present utility model;
FIG. 6 is an enlarged schematic view of the structure of FIG. 1 at C according to the present utility model;
fig. 7 is a schematic view of a front sectional partial structure of the present utility model.
In the figure: 1. an axial flow fan; 2. anti-sucking net cover; 3. a connection cover; 4. a first drive shaft; 5. a first fan blade; 6. a first bevel gear; 7. a rotating shaft; 8. a third bevel gear; 9. a second drive shaft; 10. a fourth bevel gear; 11. a second fan blade; 12. a blowback cover; 13. a dust screen; 14. a gas check valve; 15. a blowback pipe; 16. a fixing frame; 17. a bolt; 18. a mounting frame; 19. a connecting groove; 20. a sleeve; 21. a pull rod; 22. a return spring; 23. a stop block; 24. a support frame; 25. and a second bevel gear.
Description of the embodiments
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.
Examples
Referring to fig. 1 to 5, the present utility model provides the following technical solutions: the suction hood with the automatic back blowing system comprises an axial flow fan 1, a suction hood 2, a connecting hood 3 and a back blowing hood 12, wherein the connecting hood 3 is cylindrical, the suction hood 2 is fixedly arranged on the connecting hood 3, the suction hood 2 is arranged at an air inlet of the axial flow fan 1 through the connecting hood 3, a first transmission shaft 4 is rotatably arranged in the middle of the suction hood 2 through a bearing, a first fan blade 5 and a first bevel gear 6 are fixedly arranged on the first transmission shaft 4 respectively, the first transmission shaft 4 is coaxial with the connecting hood 3, the first transmission shaft 4, the first fan blade 5 and the first bevel gear 6 are all arranged in the connecting hood 3, the first fan blade 5 and the first bevel gear 6 are distributed along the axial direction of the first transmission shaft 4, a support frame 24 is welded inside the connecting hood 3, a rotating shaft 7 is rotatably arranged inside the support frame 24, a second bevel gear 25 meshed with the first bevel gear 6 is fixedly arranged at one end of the rotating shaft 7, the second transmission shaft 9 is rotatably arranged in the back-blowing cover 12 through a bearing, a fourth bevel gear 10 and second fan blades 11 are fixedly arranged on the second transmission shaft 9 respectively, a third bevel gear 8 communicated with the fourth bevel gear 10 is fixedly arranged at the other end of the rotation shaft 7, a gas check valve 14 communicated with the gas check valve is fixedly arranged at the outer end of the back-blowing cover 12, a back-blowing pipe 15 is fixedly arranged at the gas outlet of the gas check valve 14, the back-blowing cover 12 is hollow with both ends open, a dust screen 13 is fixedly arranged at one end of the back-blowing cover 12 far away from the gas check valve 14, the back-blowing cover 12 is fixedly connected with the outer surface of the connecting cover 3, the number of the back-blowing covers 12 is a plurality, the back-blowing covers 12 are distributed in a ring array with the axis of the connecting cover 3, the fourth bevel gear 10 and the second fan blades 11 are axially arranged along the second transmission shaft 9, the third bevel gear 8 is rotatably mounted in the blowback cover 12 by a rotation shaft 7.
When the axial flow fan 1 is started, the axial flow fan 1 can suck external air into the axial flow fan 1 through the anti-sucking net cover 2 and the connecting cover 3, in the process, the high-speed flowing air can drive the first fan blade 5 and the first transmission shaft 4 to rotate at a high speed, the first transmission shaft 4 drives the second bevel gear 25, the rotating shaft 7 and the third bevel gear 8 to rotate through the first bevel gear 6, the third bevel gear 8 finally drives the second transmission shaft 9 and the second fan blade 11 to rotate at a high speed through the fourth bevel gear 10, at the moment, the second fan blade 11 pumps the external air into the back blowing cover 12 through the dust screen 13, and blows the external air onto the anti-sucking net cover 2 through the air check valve 14 and the back blowing pipe 15, so that when sundries exist on the anti-sucking net cover 2, the sundries can be blown down through the high-speed air blown out through the back blowing pipe 15, the sundries are prevented from affecting the air inflow of the axial flow fan 1, normal work of the sundries is ensured, the sundries are effectively prevented from being blown into the fan, and the protection capability of the axial flow fan 1 is improved.
Examples
Referring to fig. 1, 2, and 6 to 7, the present utility model provides the following technical solutions: the utility model provides a take automatic blowback system's anti-suction hood, the outside welding of axial fan 1 air intake has mount 16, screw thread installs bolt 17 on the mount 16, and the periphery welding of connecting hood 3 has mounting bracket 18, connecting groove 19 has been seted up to the inside of mounting bracket 18, mounting bracket 18 butt on mount 16, the shape of connecting groove 19 is the rectangle, and connecting groove 19 downwardly extending reaches the lower surface of mounting bracket 18, mounting bracket 18 cup joints on bolt 17 through connecting groove 19, and the inside slidable mounting of mounting bracket 18 has the dog 23 of butt in bolt 17 lower surface, dog 23 pegging graft in connecting groove 19, and the outer end of dog 23 is the inclined plane, the inner fixed mounting of dog 23 has pull rod 21, the surface welding of mounting bracket 18 has sleeve 20 of cup jointing on pull rod 21, the outside of pull rod 21 is located mounting bracket 18 and sleeve 20 and cup joints reset spring 22, the shape of pull rod 21 is the T type, and the outside extension sleeve 20 of pull rod 21, reset spring 22's one end and sleeve 20's internal surface butt, reset spring 22's the other end and dog 23 butt.
When the anti-suction net cover 2 is required to be detached, the stop block 23 is separated from the bolt 17 by pulling the pull rod 21 outwards and is compressed to the return spring 22, then the connecting cover 3 and the anti-suction net cover 2 can be driven to move upwards by pulling the pull rod 21 upwards or the mounting frame 18 until the connecting groove 19 is completely separated from the bolt 17, the connecting cover 3 and the anti-suction net cover 2 can be detached, then the connecting cover 3, the anti-suction net cover 2 or the inside of the axial flow fan 1 can be maintained, the connecting groove 19 is sleeved back on the bolt 17 after the detachment is completed, the mounting frame 18 is slightly pressed downwards by the inclined plane due to the fact that the lower side of the outer end of the stop block 23 is hard, the stop block 23 is contracted to the direction of the return spring 22, the stop block 23 slides over the bolt 17, then the stop block 23 is pushed to stretch to the original position under the rebound force of the return spring 22, and the upper surface of the stop block 23 is enabled to be abutted to the lower surface of the bolt 17, the mounting frame 18 can be fixed on the bolt 17, the anti-suction net cover 2 and the connecting cover 3 are mounted and fixed on the axial flow fan 1, and the fixing mode of the anti-suction net cover 2 is relatively to the inner side of the bolt 17 is achieved, the fixing mode, the anti-suction net cover 2 is convenient to detach and the axial flow fan is convenient to use, daily use and high in daily operation, and easy and high in daily use.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.
Claims (8)
1. The utility model provides a take automatic blowback system prevent suction hood, includes axial fan, prevents inhaling screen panel, connection cover and blowback cover, its characterized in that: the middle part of the anti-suction net cover is rotatably provided with a first transmission shaft through a bearing, a first fan blade and a first bevel gear are fixedly arranged on the first transmission shaft respectively, a support frame is welded in the connecting cover, a rotating shaft is rotatably arranged in the support frame, one end of the rotating shaft is fixedly provided with a second bevel gear meshed with the first bevel gear, the inside of the back-blowing cover is rotatably provided with a second transmission shaft through a bearing, a fourth bevel gear and a second fan blade are fixedly arranged on the second transmission shaft respectively, the other end of the rotating shaft is fixedly provided with a third bevel gear communicated with the fourth bevel gear, the outer end of the back-blowing cover is fixedly provided with a gas check valve communicated with the gas check valve, and a back-blowing pipe is fixedly arranged at the gas outlet of the gas check valve;
the outside welding of axial fan air intake has the mount, and threaded mounting has the bolt on the mount, and the periphery welding of connecting cover has the mounting bracket, and the spread groove has been seted up to the inside of mounting bracket, and the mounting bracket cup joints on the bolt through the spread groove, and the inside slidable mounting of mounting bracket has the dog of butt in the bolt lower surface, and the inner fixed mounting of dog has the pull rod, the surface welding of mounting bracket has the sleeve of cup jointing on the pull rod, and the outside of pull rod is located mounting bracket and sleeve and cup joints reset spring.
2. The suction hood with automatic back blowing system according to claim 1, wherein: the shape of the connecting cover is cylindrical, the anti-suction net cover is fixedly arranged on the connecting cover, and the anti-suction net cover is arranged at the air inlet of the axial flow fan through the connecting cover.
3. The suction hood with automatic back blowing system according to claim 1, wherein: the first transmission shaft is coaxial with the connecting cover, the first transmission shaft, the first fan blades and the first bevel gears are all located in the connecting cover, and the first fan blades and the first bevel gears are distributed along the axial direction of the first transmission shaft.
4. The suction hood with automatic back blowing system according to claim 1, wherein: the inside of blowback cover is the cavity form of both ends all open-ended, and the one end fixed mounting that the gas check valve was kept away from to the blowback cover has the dust screen, blowback cover fixed connection is in the surface of connecting cover, and the quantity of blowback cover is a plurality of, and a plurality of blowback cover is annular array with the axis of connecting cover and distributes.
5. The suction hood with automatic back blowing system according to claim 1, wherein: the fourth bevel gear and the second fan blades are arranged along the axial direction of the second transmission shaft, and the third bevel gear is rotatably arranged in the back-blowing cover through a rotating shaft.
6. The suction hood with automatic back blowing system according to claim 1, wherein: the mounting bracket butt is on the mount, the shape of spread groove is the rectangle, and the spread groove downwardly extending to the lower surface of mounting bracket.
7. The suction hood with automatic back blowing system according to claim 1, wherein: the stop block is inserted into the connecting groove, and the outer end of the stop block is inclined.
8. The suction hood with automatic back blowing system according to claim 1, wherein: the pull rod is T-shaped, the pull rod extends outwards to form a sleeve, one end of the return spring is abutted to the inner surface of the sleeve, and the other end of the return spring is abutted to the stop block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320830368.5U CN219366431U (en) | 2023-04-14 | 2023-04-14 | Suction hood is prevented to automatic blowback system in area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320830368.5U CN219366431U (en) | 2023-04-14 | 2023-04-14 | Suction hood is prevented to automatic blowback system in area |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219366431U true CN219366431U (en) | 2023-07-18 |
Family
ID=87153210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320830368.5U Active CN219366431U (en) | 2023-04-14 | 2023-04-14 | Suction hood is prevented to automatic blowback system in area |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219366431U (en) |
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2023
- 2023-04-14 CN CN202320830368.5U patent/CN219366431U/en active Active
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