CN220134277U - Centrifugal fan with flange plate - Google Patents
Centrifugal fan with flange plate Download PDFInfo
- Publication number
- CN220134277U CN220134277U CN202321022792.3U CN202321022792U CN220134277U CN 220134277 U CN220134277 U CN 220134277U CN 202321022792 U CN202321022792 U CN 202321022792U CN 220134277 U CN220134277 U CN 220134277U
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- Prior art keywords
- flange plate
- centrifugal fan
- shell
- flange
- cavity
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- 230000005540 biological transmission Effects 0.000 claims abstract description 9
- 230000003647 oxidation Effects 0.000 claims description 13
- 238000007254 oxidation reaction Methods 0.000 claims description 13
- 230000003678 scratch resistant effect Effects 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 239000003973 paint Substances 0.000 claims description 3
- 239000000428 dust Substances 0.000 abstract description 6
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a centrifugal fan with a flange, which comprises: the shell is internally provided with a cavity and an air duct communicated with the cavity; the centrifugal fan body is arranged in the shell and the cavity; the flange plate structure is integrated on the shell and comprises a flange plate integrally formed with the shell; the flange plate is provided with a plurality of threaded through holes; the power unit is arranged at one side of the shell and comprises a motor, and the motor is connected with the centrifugal fan body through a transmission belt. The flange plate and the shell are integrally designed and manufactured, gaps are not generated, dust is prevented from entering when air flow enters the shell at high speed, vibration of the fan is greatly reduced, safety of the fan is guaranteed, and service life of the fan is prolonged.
Description
Technical Field
The utility model relates to the field of centrifugal fans, in particular to a centrifugal fan with a flange.
Background
The centrifugal fan is a machine which increases the pressure of gas and discharges the gas by means of input mechanical energy, and is a driven fluid machine. Centrifugal fans are widely used for ventilation, dust removal and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings; ventilation and induced draft of boilers and industrial kilns; cooling and ventilation in air-conditioning devices and household appliances; drying and selecting grains; inflation and propulsion of wind tunnel wind source and air cushion ship, etc. Along with the promotion of the industrialization process in China, the industry is greatly developing energy conservation and consumption reduction, industrial upgrading, integration and recombination are carried out, and industrial basic equipment needs to be updated in a large quantity. The centrifugal fan is used as an important supporting device in industry and is more applied to the fields of electric power, cement, petrochemical industry, coal, mine, environmental protection and the like. In the new economic development situation, the future centrifugal fan industry will continue to grow faster.
The flange plate of the existing centrifugal fan is independently installed. Such designs suffer from two drawbacks:
1. after the flange plate is installed, gaps can appear after long-time operation. In the process that a large amount of air is pumped into the machine, a large amount of tiny dust in the air can enter the centrifugal fan from the gap, and a large amount of dust can enter various parts in the fan, so that parts in the fan are worn, and the service life of the fan is shortened.
2. The flange plate is independently installed, so that a resonance effect can be formed, and the working effect of the fan is endangered.
To improve the above situation, the skilled person has made technical improvements, i.e. the technology in this patent.
Disclosure of Invention
In view of the above, the present utility model aims to provide a centrifugal fan with a flange, wherein the flange and a housing are integrally manufactured, and the problems existing in the prior art are solved.
The utility model provides a centrifugal fan with a flange plate, which comprises: the shell is internally provided with a cavity and an air duct communicated with the cavity; the centrifugal fan body is arranged in the shell and the cavity; the flange plate structure is integrated on the shell and comprises a flange plate integrally formed with the shell; the flange plate is provided with a plurality of threaded through holes; the power unit is arranged at one side of the shell and comprises a motor, and the motor is connected with the centrifugal fan body through a transmission belt.
In one embodiment, the threaded through hole of the flange plate comprises an opening part and a connecting part; the section of the opening part is an arc surface, and the inner wall of the opening part is not provided with threads; the section of the connecting part is cylindrical, and the inner wall of the connecting part is provided with internal threads.
In one embodiment, the flange has a plurality of annular grooves on its outer surface.
In one embodiment, the centrifugal fan body includes a drive shaft mounted to the housing; the inner side end part of the driving shaft penetrates into the cavity; the inner side end part of the driving shaft is provided with a blade group; the outer end part of the driving shaft is in transmission connection with a transmission belt.
In one embodiment, the housing is mounted to the base by a bracket; the motor is mounted on the base.
In an embodiment, the surface of the flange plate is sequentially provided with an oxidation preventing layer and a scratch preventing layer from inside to outside.
In one embodiment, the oxidation preventing layer is formed by brushing graphite oxidation preventing paint, and the thickness of the oxidation preventing layer is 0.1-0.6mm.
In one embodiment, the scratch-resistant layer is a double-sided scratch-resistant film having a thickness of 0.1-0.4 mm.
In one embodiment, a plurality of friction plates are arranged around the threaded through hole of the flange plate; the height of the friction plate is slightly higher than that of the flange plate.
Due to the adoption of the technology, the beneficial effects in the patent are as follows:
the flange plate and the shell are integrally designed and manufactured, gaps are not generated, dust is prevented from entering when air flow enters the shell at high speed, vibration of the fan is greatly reduced, safety of the fan is guaranteed, and service life of the fan is prolonged.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present utility model.
Fig. 2 is a schematic top view of a flange according to an embodiment of the present utility model.
Fig. 3 is a schematic structural diagram of a flange plate connected to an external air duct according to an embodiment of the present utility model.
Fig. 4 is a schematic view of a threaded through hole according to an embodiment of the present utility model.
Fig. 5 is a schematic side view of a flange according to an embodiment of the present utility model.
Detailed Description
Specific embodiments of the present utility model will be described in detail below with reference to fig. 1-5. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art without making any inventive effort, are intended to be within the scope of the present utility model.
In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "disposed," "mounted," "connected," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the terms described above will be understood to those of ordinary skill in the art in a specific context.
The terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," and the like are used as references to orientations or positional relationships based on the orientation or positional relationships shown in the drawings, or the orientation or positional relationships in which the inventive product is conventionally disposed in use, merely for convenience of description and simplicity of description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore are not to be construed as limiting the utility model.
The terms "first," "second," "third," and the like, are merely used for distinguishing between similar elements and not necessarily for indicating or implying a relative importance or order.
The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a list of elements does not include only those elements but may include other elements not expressly listed.
Examples
As shown in fig. 1-5, the present embodiment discloses a centrifugal fan with a flange, which comprises a housing 1 and a centrifugal fan body. The shell is internally provided with a cavity and an air duct communicated with the cavity. The centrifugal fan body comprises a driving shaft 9 arranged on the shell 1, and the inner side end part of the driving shaft 9 penetrates into the cavity. The inner end of the drive shaft 9 is provided with a vane set. The outer end of the driving shaft 9 is in transmission connection with the driving belt 5.
The flange structure is integrated on the housing 1 and comprises a flange 2 integrally formed with the housing 1. The flange plate 2 is provided with a plurality of threaded through holes.
The power unit is arranged at one side of the shell 1 and comprises a motor 3, and the motor 3 is connected with the centrifugal fan body through a transmission 5 belt.
In practice, the base 6 is required. The shell 1 is arranged on the base 6 through a bracket 8; the motor 3 is mounted on the base 6. In addition, for damping, a first damper block 7 is provided between the base 6 and the bracket 8, and a second damper block 4 is provided between the base 6 and the motor 3. The first damper block 7 and the second damper block 4 may be made of a wood material or a rubber material having a certain elasticity.
The threaded through-hole 14 of the flange 2 is also specially designed. When in installation, the existing threaded through holes are inconvenient to align and install. The threaded through hole 14 includes an opening portion 140 and a connecting portion 141. The cross section of the opening 140 is an arc surface, and the inner wall of the opening is not threaded. The connecting portion 141 has a cylindrical cross section, and has an internal thread on an inner wall thereof. The external connecting pipe 11 is mainly ventilated, with a through hole 10 corresponding to the threaded through hole 14. When the bolt is installed, the bolt penetrates through the through hole 10 and then aligns with the opening part 140 of the threaded through hole 14, and the alignment and the operation are convenient because the opening area of the opening part 140 is large.
For tightening and sealing, a plurality of annular grooves 13 are provided on the outer surface of the flange 2. The connecting duct 11 is also designed with projections 12 corresponding to the annular grooves 13. When in installation, the bulge 12 is clamped into the annular groove 13, so that sealing connection is realized. A plurality of friction plates 17 are arranged around the threaded through holes 14 of the flange plate 2, and the height of the friction plates 17 is slightly higher than that of the flange plate.
The surface of the flange plate is sequentially provided with an oxidation prevention layer 16 and a scratch prevention layer 15 from inside to outside. The oxidation preventing layer 16 is made of graphite oxidation preventing paint and has thickness of 0.1-0.6mm. The scratch-resistant layer 15 is a double-sided scratch-resistant film with a thickness of 0.1-0.4 mm.
The flange plate and the shell are integrally designed and manufactured, gaps are not formed, dust is prevented from entering the shell at high air flow speed, vibration of the fan is greatly reduced, safety of the fan is guaranteed, and service life of the fan is prolonged.
The oxidation preventing layer 16 and the scratch preventing layer 15 can effectively protect the safety of the flange, and the oxidation preventing layer 16 and the scratch preventing layer 15 can be designed on the outer surface of the whole shell if necessary.
The sealing connection of the connecting pipeline 11 and the flange plate 2 can be realized by the matching of the annular groove and the bulge and the design of the friction plate, so that the air flow is prevented from overflowing.
It should be noted that, in the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described as different from other embodiments, and identical and similar parts between the embodiments are all enough to be referred to each other.
The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present utility model should be included in the present utility model. Accordingly, the scope of the utility model should be assessed as that of the appended claims.
Claims (9)
1. A centrifugal fan with a flange, comprising:
the shell is internally provided with a cavity and an air duct communicated with the cavity;
the centrifugal fan body is arranged in the shell and the cavity;
the flange plate structure is integrated on the shell and comprises a flange plate integrally formed with the shell; the flange plate is provided with a plurality of threaded through holes;
the power unit is arranged at one side of the shell and comprises a motor, and the motor is connected with the centrifugal fan body through a transmission belt.
2. The centrifugal fan with a flange plate according to claim 1, wherein the threaded through hole of the flange plate comprises an opening part and a connecting part; the section of the opening part is an arc surface, and the inner wall of the opening part is not provided with threads; the section of the connecting part is cylindrical, and the inner wall of the connecting part is provided with internal threads.
3. A centrifugal fan with a flange according to claim 2, characterized in that the outer side surface of the flange is provided with a plurality of annular grooves.
4. A self-flanged centrifugal fan according to claim 3, wherein said centrifugal fan body includes a drive shaft mounted to said housing; the inner side end part of the driving shaft penetrates into the cavity; the inner side end part of the driving shaft is provided with a blade group; the outer end part of the driving shaft is in transmission connection with a transmission belt.
5. The centrifugal fan with a flange plate according to claim 1, wherein the shell is mounted on the base through a bracket; the motor is mounted on the base.
6. The centrifugal fan with the flange plate according to claim 1, wherein an oxidation preventing layer and a scratch preventing layer are sequentially arranged on the surface of the flange plate from inside to outside.
7. The centrifugal fan with the flange plate according to claim 6, wherein the oxidation-resistant layer is made of graphite oxidation-resistant paint, and the thickness of the oxidation-resistant layer is 0.1-0.6mm.
8. A centrifugal fan with a flange according to claim 7, wherein the scratch-resistant layer is a double-sided scratch-resistant film with a thickness of 0.1-0.4 mm.
9. The centrifugal fan with the flange plate according to claim 2, wherein a plurality of friction plates are arranged around the threaded through hole of the flange plate; the height of the friction plate is slightly higher than that of the flange plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321022792.3U CN220134277U (en) | 2023-04-28 | 2023-04-28 | Centrifugal fan with flange plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321022792.3U CN220134277U (en) | 2023-04-28 | 2023-04-28 | Centrifugal fan with flange plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220134277U true CN220134277U (en) | 2023-12-05 |
Family
ID=88953192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321022792.3U Active CN220134277U (en) | 2023-04-28 | 2023-04-28 | Centrifugal fan with flange plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220134277U (en) |
-
2023
- 2023-04-28 CN CN202321022792.3U patent/CN220134277U/en active Active
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