CN216691503U - Centrifugal fan with airtight ring - Google Patents
Centrifugal fan with airtight ring Download PDFInfo
- Publication number
- CN216691503U CN216691503U CN202220089903.1U CN202220089903U CN216691503U CN 216691503 U CN216691503 U CN 216691503U CN 202220089903 U CN202220089903 U CN 202220089903U CN 216691503 U CN216691503 U CN 216691503U
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- Prior art keywords
- fan
- impeller
- connecting shaft
- gear
- driving
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- 241000886569 Cyprogenia stegaria Species 0.000 claims abstract description 39
- 230000005540 biological transmission Effects 0.000 claims abstract description 24
- 238000007789 sealing Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 238000007664 blowing Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 241000883990 Flabellum Species 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003889 chemical engineering Methods 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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Abstract
The utility model relates to the field of centrifugal fans, in particular to a centrifugal fan with an airtight ring; comprises a base, a fan shell, an impeller, an airtight device and a driving device; the air tight device comprises a connecting shaft, a driving gear, a transmission gear, a driven gear, a rotary bearing and fan blades, the connecting shaft is driven to rotate through a driving device, and then the impeller is driven to rotate, thereby enabling the impeller to suck air into a fan shell and discharge the air, the connecting shaft drives the driving gear to rotate while rotating, the driving gear drives the transmission gear to rotate, and then the driven gear is driven to rotate, through the rotary bearing, smooth degree when the driven gear rotates is promoted, the fan blades are driven to rotate through the rotation of the driven gear, the fan blades and the impeller rotate towards opposite directions, thereby blowing leaked air to the impeller, and the purpose of improving the sealing effect of the centrifugal fan with the air tight ring is achieved.
Description
Technical Field
The utility model relates to the field of centrifugal fans, in particular to a centrifugal fan with an airtight ring.
Background
When the centrifugal fan is applied to various occasions, such as the fields of chemical engineering, pharmacy, electroplating and the like, for conveying corrosive gas, the centrifugal fan is particularly required to have better corrosion resistance. Generally, the working principle of the fan during conveying corrosive gas is that air is fed into the front air inlet and air is discharged from the upper side or the side surface of the front air inlet, and because the impeller generates large internal pressure during operation, when the gas is output from the air outlet, a certain amount of gas leaks backwards from a gap between a connecting shaft of the impeller and the casing, the leaked gas inevitably causes corrosion of the motor and the iron frame, and meanwhile, the leaked gas also pollutes the environment and causes harm to the human body, so that the air tightness of the centrifugal fan is enhanced.
The labyrinth seal is usually adopted to seal between the motor output shaft and the shell in the prior art, but the problems of poor sealing performance and large leakage of the labyrinth seal centrifugal fan are discovered during use, and the existing production and use requirements cannot be met.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a centrifugal fan with an airtight ring, and aims to solve the technical problems that the centrifugal fan in the prior art is poor in sealing performance and large in leakage, and the existing production and use requirements cannot be met.
In order to achieve the aim, the utility model provides a centrifugal fan with an airtight ring, which comprises a base, a fan shell, an impeller, an airtight device and a driving device, wherein the impeller is arranged on the base; the fan shell is fixedly connected with the base and is positioned on one side of the base, the impeller is rotatably connected with the fan shell and is positioned in the fan shell, and the driving device is arranged on one side, close to the fan shell, of the base; the air-tight device comprises a connecting shaft, a driving gear, a transmission gear, a driven gear, a rotary bearing and fan blades, wherein the connecting shaft is fixedly connected with the impeller and arranged on the impeller, the driving gear is fixedly connected with the connecting shaft and sleeved on the connecting shaft, the transmission gear is rotatably connected with the fan shell and positioned inside the fan shell, the rotary bearing is rotatably connected with the connecting shaft and sleeved on the connecting shaft, the driven gear is fixedly connected with the rotary bearing and rotatably connected with the transmission gear, the rotary bearing is provided with the fan blades, and the fan blades are fixedly connected with the driven gear and positioned on one side of the driving gear.
The fan shell is provided with an air inlet and an air outlet, the air inlet is positioned on one side, close to the impeller, of the fan shell, and the air inlet penetrates through the fan shell; the air outlet is arranged on the fan shell, penetrates through the shell and is communicated with the air inlet.
The rotary bearing comprises a rotary outer ring, a rotary inner ring and balls, wherein the rotary outer ring is fixedly connected with the driven gear and is arranged on the driven gear; the balls are rotationally connected with the rotating outer ring and are positioned on the inner side of the rotating outer ring; the rotary inner ring is rotatably connected with the ball, fixedly connected with the connecting shaft and sleeved on the connecting shaft.
The driving device comprises a driving wheel, a driven wheel, a transmission belt and a driving motor, and the driving motor is fixedly connected with the base and is positioned on one side of the base close to the fan shell; the driving wheel is arranged on the driving motor and is connected with the output end of the driving motor; the driven wheel is fixedly connected with the connecting shaft and is positioned at one end of the connecting shaft, which is far away from the impeller; the transmission belt is rotatably connected with the driving wheel and the driven wheel, and is sleeved on two sides of the driving wheel and the driven wheel.
The centrifugal fan with the airtight ring further comprises a fan support, wherein the fan support is fixedly connected with the base, fixedly connected with the fan shell and located on one side, close to the fan shell, of the base.
The centrifugal fan provided with the airtight ring drives the connecting shaft to rotate through the driving device, thereby driving the impeller to rotate, so that the impeller can suck air into the fan shell and discharge the air, the driving gear, the driven gear and the transmission gear are all bevel gears, the teeth are meshed with each other, the connecting shaft rotates and simultaneously drives the driving gear to rotate, the driving gear drives the transmission gear to rotate, thereby driving the driven gear to rotate, improving the smoothness degree of the driven gear when rotating through the rotating bearing, the fan blades are driven to rotate by the rotation of the driven gear, so that the fan blades and the impeller rotate in opposite directions, therefore, leaked gas is blown to the impeller, and the purpose of improving the sealing effect of the centrifugal fan with the airtight ring is achieved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a centrifugal fan provided with an airtight ring.
Fig. 2 is a schematic structural diagram of the airtight device provided by the present invention.
Fig. 3 is an enlarged view of fig. 2 at a.
Fig. 4 is a schematic structural diagram of a driven wheel and a gear provided by the utility model.
Fig. 5 is an enlarged view of fig. 4 at B.
In the figure, 1-a base, 2-a fan shell, 21-an air inlet, 22-an air outlet, 3-an impeller, 4-an airtight device, 41-a connecting shaft, 42-a driving gear, 43-a transmission gear, 44-a driven gear, 45-a rotating bearing, 451-a rotating outer ring, 452-a rotating inner ring, 453-a ball, 46-a fan blade, 5-a driving device, 51-a driving wheel, 52-a driven wheel, 53-a transmission belt, 54-a driving motor and 6-a fan bracket.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Referring to fig. 1 to 4, the present invention provides a centrifugal fan with an airtight ring, which includes a base 1, a fan housing 2, an impeller 3, an airtight device 4 and a driving device 5; the fan shell 2 is fixedly connected with the base 1 and is positioned on one side of the base 1, the impeller 3 is rotatably connected with the fan shell 2 and is positioned in the fan shell 2, and the driving device 5 is arranged on one side, close to the fan shell 2, of the base 1; airtight device 4 includes connecting axle 41, driving gear 42, drive gear 43, driven gear 44, swivel bearing 45 and flabellum 46, connecting axle 41 with 3 fixed connection of impeller, and set up on the impeller 3, the driving gear 42 with connecting axle 41 fixed connection, and the cover is established on the connecting axle 41, drive gear 43 with fan shell 2 rotates to be connected, and is located inside fan shell 2, swivel bearing 45 with connecting axle 41 rotates to be connected, and the cover is established on the connecting axle 41, driven gear 44 with swivel bearing 45 fixed connection, and with drive gear 43 rotates to be connected, and the cover is established on swivel bearing 45, flabellum 46 with driven gear 44 fixed connection, and be located driven gear 44 keeps away from one side of driving gear 42.
Further, referring to fig. 1, the fan housing 2 has an air inlet 21 and an air outlet 22, the air inlet 21 is located on one side of the fan housing 2 close to the impeller 3, and the air inlet 21 penetrates through the fan housing 2; the air outlet 22 is arranged on the fan shell 2, and the air outlet 22 penetrates through the shell and is communicated with the air inlet 21.
Further, referring to fig. 5, the rotating bearing 45 includes a rotating outer ring 451, a rotating inner ring 452 and balls 453, the rotating outer ring 451 is fixedly connected to the driven gear 44 and is disposed on the driven gear 44; the balls 453 are rotatably connected to the rotating outer ring 451 and are located inside the rotating outer ring 451; the rotating inner ring 452 is rotatably connected to the balls 453, is fixedly connected to the connecting shaft 41, and is sleeved on the connecting shaft 41.
In this embodiment, the driving device 5 drives the connecting shaft 41 to rotate and further drives the impeller 3 to rotate, so that the impeller 3 can suck air into the fan housing 2 from the air inlet 21 and discharge the air from the air outlet 22 to complete ventilation, the driving gear 42, the driven gear 44 and the transmission gear 43 are all bevel gears, teeth are engaged with each other, the connecting shaft 41 rotates and simultaneously drives the driving gear 42 to rotate, the driving gear 42 drives the transmission gear 43 to rotate and further drives the transmission gear 43 to rotate the driven gear 44, the plurality of balls 453 are provided, and the balls 453 are connected with the rotating outer ring 451 and the rotating inner ring 452 to rotate, so that friction generated between the rotating outer ring 451 and the rotating inner ring 452 is reduced, and then through the swivel bearing 45, the smoothness degree of the driven gear 44 when rotating is improved, and through the transmission gear 43, the driven gear 44 is driven to rotate towards the direction opposite to the rotation direction of the impeller 3, so that the fan blade 46 and the impeller 3 rotate towards the opposite direction, and the leaked gas is blown to the impeller 3, thereby realizing the purpose of improving the sealing effect of the centrifugal fan with the airtight ring.
Further, referring to fig. 1 and fig. 2, the driving device 5 includes a driving wheel 51, a driven wheel 52, a transmission belt 53 and a driving motor 54, and the driving motor 54 is fixedly connected to the base 1 and is located on one side of the base 1 close to the blower housing 2; the driving wheel 51 is arranged on the driving motor 54 and is connected with the output end of the driving motor 54; the driven wheel 52 is fixedly connected with the connecting shaft 41 and is positioned at one end of the connecting shaft 41 far away from the impeller 3; the transmission belt 53 is rotatably connected with the driving wheel 51, rotatably connected with the driven wheel 52, and sleeved on two sides of the driving wheel 51 and the driven wheel 52.
In this embodiment, the driving motor 54 is fixedly installed on the base 1 and located on one side of the base 1 close to the blower housing 2, the driving wheel 51 is driven to rotate by the operation of the driving motor 54, the driving wheel 51 drives the driving belt 53 to rotate, and then the driving belt 53 drives the driven wheel 52 to rotate, so that the driven wheel 52 drives the connecting shaft 41 and the driving gear 42 to rotate.
Further, referring to fig. 1, the centrifugal fan with the airtight ring further includes a fan support 6, and the fan support 6 is fixedly connected to the base 1, fixedly connected to the fan housing 2, and located on one side of the base 1 close to the fan housing 2.
In this embodiment, the fan bracket 6 is fixedly mounted on the base 1, and is fixedly mounted on the fan housing 2, and is located on the side of the base 1 close to the fan housing 2, and the fan housing 2 is reinforced by the fan bracket 6, so that the fan housing 2 can be more stably mounted on the base 1.
In the centrifugal fan with the airtight ring, the driving device 5 drives the connecting shaft 41 to rotate so as to drive the impeller 3 to rotate, so that the impeller 3 can suck air into the fan housing 2 and discharge the air, the driving gear 42, the driven gear 44 and the transmission gear 43 are all bevel gears, teeth are meshed with each other, the connecting shaft 41 rotates and simultaneously drives the driving gear 42 to rotate, the driving gear 42 drives the transmission gear 43 to rotate so as to drive the driven gear 44 to rotate, the smoothness degree of the driven gear 44 during rotation is improved through the rotating bearing 45, the rotation of the driven gear 44 drives the fan blades 46 to rotate, so that the fan blades 46 and the impeller 3 rotate in opposite directions, and leaked air is blown to the impeller 3, the purpose of improving the sealing effect of the centrifugal fan with the airtight ring is achieved.
While the utility model has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the utility model.
Claims (5)
1. A centrifugal fan provided with an airtight ring is characterized by comprising a base, a fan shell, an impeller, an airtight device and a driving device;
the fan shell is fixedly connected with the base and is positioned on one side of the base, the impeller is rotatably connected with the fan shell and is positioned in the fan shell, and the driving device is arranged on one side, close to the fan shell, of the base;
the air-tight device comprises a connecting shaft, a driving gear, a transmission gear, a driven gear, a rotary bearing and fan blades, wherein the connecting shaft is fixedly connected with the impeller and arranged on the impeller, the driving gear is fixedly connected with the connecting shaft and sleeved on the connecting shaft, the transmission gear is rotatably connected with the fan shell and positioned inside the fan shell, the rotary bearing is rotatably connected with the connecting shaft and sleeved on the connecting shaft, the driven gear is fixedly connected with the rotary bearing and rotatably connected with the transmission gear, the rotary bearing is provided with the fan blades, and the fan blades are fixedly connected with the driven gear and positioned on one side of the driving gear.
2. Centrifugal fan provided with an airtight ring according to claim 1,
the fan shell is provided with an air inlet and an air outlet, the air inlet is positioned on one side, close to the impeller, of the fan shell, and the air inlet penetrates through the fan shell; the air outlet is arranged on the fan shell, penetrates through the shell and is communicated with the air inlet.
3. Centrifugal fan provided with an airtight ring according to claim 1,
the rotary bearing comprises a rotary outer ring, a rotary inner ring and balls, and the rotary outer ring is fixedly connected with the driven gear and arranged on the driven gear; the ball bearings are rotationally connected with the rotating outer ring and are positioned on the inner side of the rotating outer ring; the rotary inner ring is rotatably connected with the ball, fixedly connected with the connecting shaft and sleeved on the connecting shaft.
4. Centrifugal fan provided with an airtight ring according to claim 1,
the driving device comprises a driving wheel, a driven wheel, a transmission belt and a driving motor, and the driving motor is fixedly connected with the base and is positioned on one side of the base close to the fan shell; the driving wheel is arranged on the driving motor and is connected with the output end of the driving motor; the driven wheel is fixedly connected with the connecting shaft and is positioned at one end of the connecting shaft, which is far away from the impeller; the transmission belt is rotatably connected with the driving wheel and the driven wheel, and is sleeved on two sides of the driving wheel and the driven wheel.
5. Centrifugal fan provided with an airtight ring, according to claim 1,
the centrifugal fan with the airtight ring further comprises a fan support, wherein the fan support is fixedly connected with the base, fixedly connected with the fan shell and located on one side, close to the fan shell, of the base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220089903.1U CN216691503U (en) | 2022-01-14 | 2022-01-14 | Centrifugal fan with airtight ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220089903.1U CN216691503U (en) | 2022-01-14 | 2022-01-14 | Centrifugal fan with airtight ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216691503U true CN216691503U (en) | 2022-06-07 |
Family
ID=81821303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220089903.1U Active CN216691503U (en) | 2022-01-14 | 2022-01-14 | Centrifugal fan with airtight ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216691503U (en) |
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2022
- 2022-01-14 CN CN202220089903.1U patent/CN216691503U/en active Active
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231220 Address after: No. 93, Group 5, Huachuan Village, Huangjian Town, Tinghu District, Yancheng City, Jiangsu Province (20) Patentee after: Yancheng Guojie Machinery Co.,Ltd. Address before: 224332 southeast industrial concentration area, Yandong Town, Tinghu District, Yancheng City, Jiangsu Province (19) Patentee before: Jiangsu leichen Environmental Protection Technology Co.,Ltd. |