CN214998365U - Fan with dust-free centrifugal impeller - Google Patents
Fan with dust-free centrifugal impeller Download PDFInfo
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- CN214998365U CN214998365U CN202121480563.7U CN202121480563U CN214998365U CN 214998365 U CN214998365 U CN 214998365U CN 202121480563 U CN202121480563 U CN 202121480563U CN 214998365 U CN214998365 U CN 214998365U
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Abstract
The utility model relates to a fan with a dust-free centrifugal impeller, which comprises a hub, blades, a front disc and a rear disc, wherein the blades are radially installed and fixed outside the hub, and the middle part of the hub is fixedly connected with a motor rotating shaft of the centrifugal fan; the front disc and the rear disc are respectively positioned at the front side and the rear side of the blade and are respectively connected and fixed with a shell of the centrifugal fan; the utility model has the advantages of reasonable design, through adopting split type structure with centrifugal impeller, can avoid forming the dead angle region at the impeller surface, only wheel hub and blade are rotating at the operation in-process simultaneously, and preceding dish and back plate are in quiescent condition, can reduce the wearing and tearing to preceding dish and back plate, improve the life of preceding dish and back plate.
Description
Technical Field
The utility model relates to a centrifugal fan technical field especially relates to a fan with dustless centrifugal impeller.
Background
The centrifugal fan belongs to fluid machinery and can convey objects with lighter mass and specific gravity, such as fibers, smoke dust, tobacco shreds and the like, and because the centrifugal impeller of the centrifugal fan comprises a hub, blades, a front disc and a rear disc, all components are generally connected into a whole in a welding mode and are fixedly arranged on a rotating shaft of a motor by virtue of the hub, the surface of the centrifugal impeller comprises a plurality of dead angle positions, and partial dust is accumulated or fibers are wound on the centrifugal impeller or are adhered to the dead angle positions of the centrifugal impeller; meanwhile, in the operation process, the front disc, the rear disc and the impeller are in a high-speed rotation state, so that the front disc, the rear disc and dust in gas are in contact with each other, abrasion is caused, and the service life of a product is shortened.
Disclosure of Invention
In order to solve the defects in the prior art, the utility model aims to provide a fan with dustless centrifugal impeller can make the front plate and the rear plate be in a static state under the prerequisite of the normal operation of the centrifugal impeller of assurance.
The utility model provides a technical scheme that its technical problem adopted is:
the utility model provides a fan with no dust-collecting centrifugal impeller, includes wheel hub, blade, preceding dish and back dish, its characterized in that:
the blades are radially arranged and fixed on the outer side of the hub, and the middle part of the hub is fixedly connected with a motor rotating shaft of the centrifugal fan;
the front disc and the rear disc are respectively positioned at the front side and the rear side of the blade and are respectively connected and fixed with a shell of the centrifugal fan.
The front side edge or/and the rear side edge of the blade close to the hub are distributed in an inclined mode, and the width of the part, close to the hub, of the blade is smaller than that of the part, far away from the hub, of the blade.
The outer sides of the front disc and the rear disc are respectively provided with a supporting part which is respectively connected with the front disc and the rear disc, the edge of the outer side end of each supporting part is provided with a flange part which is connected with the supporting part, and the flange part is fixedly connected with the shell of the centrifugal fan.
The middle parts of the front disc and the supporting part thereof are also provided with an air inlet, and an air inlet cylinder connected with the air inlet is arranged in the air inlet.
The lateral wall of the outer side of the hub is in a conical structure, and the size of the end part of the front end of the hub is smaller than that of the end part of the rear section.
The utility model has the advantages that: structural design is reasonable, through adopting split type structure with centrifugal impeller, can avoid forming the dead angle region at the impeller surface, only wheel hub and blade are rotating at the operation in-process simultaneously, and preceding dish and back plate are in quiescent condition, can reduce the wearing and tearing to preceding dish and back plate, improve the life of preceding dish and back plate.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural view of the present invention (without an air inlet barrel).
Fig. 3 is a schematic structural view of the front disc assembly.
Fig. 4 is a schematic structural view of the rear disc assembly.
Fig. 5 is a schematic view of the structure of the hub and the blades.
In the figure: 100 volutes, 200 hubs, 201 blades, 202 contraction parts, 300 rear disc assemblies, 301 rear disc bodies, 302 shaft holes, 400 front disc assemblies, 401 front disc bodies, 402 supporting parts, 403 flange parts, 404 air inlets and 500 air inlet cylinders.
Detailed Description
The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.
As shown in fig. 1 to 5: the present embodiment provides a fan with a non-dusting centrifugal impeller comprising a volute 100, a hub 200, blades 201, a front disc assembly 400 and a rear disc assembly 300, wherein:
the blades 201 are radially installed and fixed on the outer side of the hub 200, and the middle part of the hub 200 is fixedly connected with a motor rotating shaft of the centrifugal fan; the front side and the rear side of the blade 201 close to the hub 200 are distributed in an inclined manner and form a contraction part 202, the width of the part of the blade 201 close to the hub 200 is smaller than the width of the part of the blade far away from the hub 200, so that a certain space is formed at the front side and the rear side of the root position of the blade 201 for introducing and using air flow, the outer side wall of the hub 200 is in a conical structure, the size of the front end of the hub 200 is smaller than that of the rear end, when the air flow enters an operation position, the air flow is guided by the conical outer wall of the hub 200, so that the air flow smoothly changes direction and gradually moves to the position of the blade 201, the resistance in the operation of a centrifugal impeller is reduced, and the operation efficiency is improved;
the front disk assembly 400 comprises a front disk body 401, a support part 402 and a flange part 403, wherein the front disk body 401 is arranged on the inner side in a hanging manner, the flange part 403 is arranged on the outer side and is fixedly connected with the volute 100, the flange part 403 and the volute 100 are fixedly connected with each other through the barrel-shaped support part 402, and the front disk body 401 is arranged close to the front side of the blade 201; an air inlet 404 is further arranged in the middle of the front disc body 401 and the supporting part 402, and an air inlet barrel 500 connected with the air inlet 404 is arranged inside the air inlet 404 and used for introducing air flow to the front side of the blade 201 for use, so that air inlet efficiency is improved;
the rear disk assembly 300 comprises a rear disk body 301, a supporting part 402 and a flange part 403, wherein the rear disk body 301 is arranged on the inner side in a hanging manner, the flange part 403 is arranged on the outer side and is fixedly connected with the volute 100, the flange part 403 and the volute 100 are fixedly connected with each other through a barrel-shaped supporting part 402, and the rear disk body 301 is arranged close to the rear side of the blade 201; a shaft hole 302 is further provided in the middle of the front disc body 401 and the support portion 402 for installing a rotating shaft of the driving motor for use, so that the rotating shaft is connected with the hub 200.
Through the structure, the basic structure of the centrifugal impeller is realized, however, the blades 201, the front disc assembly 400 and the rear disc assembly 300 are three assemblies which are independently arranged, in the operation process, the blades 201 rotate, the front disc assembly 400 and the rear disc assembly 300 are in a static state, and the front side and the rear side of the blades 201 are matched to form a closed channel, on one hand, only the root of the blades 201 forms a dead angle area, so that the dead angle area can be prevented from being formed on the surface of the impeller, on the other hand, only the hub 200 and the blades 201 rotate in the operation process, and the front disc and the rear disc are in a static state, so that the abrasion to the front disc body 401 and the rear disc body 301 can be reduced, and the service lives of the front disc body 401 and the rear disc body 301 are prolonged.
The above is only the preferred embodiment of the present invention, as long as the preferred embodiment is realized by the same means, the objective technical solution of the present invention all belongs to the protection scope of the present invention.
Claims (5)
1. The utility model provides a fan with no dust-collecting centrifugal impeller, includes wheel hub, blade, preceding dish and back dish, its characterized in that:
the blades are radially arranged and fixed on the outer side of the hub, and the middle part of the hub is fixedly connected with a motor rotating shaft of the centrifugal fan;
the front disc and the rear disc are respectively positioned at the front side and the rear side of the blade and are respectively connected and fixed with a shell of the centrifugal fan.
2. A fan with a non-dusting centrifugal impeller in accordance with claim 1, wherein: the front side edge or/and the rear side edge of the blade close to the hub are distributed in an inclined mode, and the width of the part, close to the hub, of the blade is smaller than that of the part, far away from the hub, of the blade.
3. A fan with a non-dusting centrifugal impeller in accordance with claim 1, wherein: the outer sides of the front disc and the rear disc are respectively provided with a supporting part which is respectively connected with the front disc and the rear disc, the edge of the outer side end of each supporting part is provided with a flange part which is connected with the supporting part, and the flange part is fixedly connected with the shell of the centrifugal fan.
4. A fan with a non-dusting centrifugal impeller in accordance with claim 3, wherein: the middle parts of the front disc and the supporting part thereof are also provided with an air inlet, and an air inlet cylinder connected with the air inlet is arranged in the air inlet.
5. A fan with a non-dusting centrifugal impeller in accordance with claim 1, wherein: the lateral wall of the outer side of the hub is in a conical structure, and the size of the end part of the front end of the hub is smaller than that of the end part of the rear section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121480563.7U CN214998365U (en) | 2021-06-29 | 2021-06-29 | Fan with dust-free centrifugal impeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121480563.7U CN214998365U (en) | 2021-06-29 | 2021-06-29 | Fan with dust-free centrifugal impeller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214998365U true CN214998365U (en) | 2021-12-03 |
Family
ID=79104280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121480563.7U Active CN214998365U (en) | 2021-06-29 | 2021-06-29 | Fan with dust-free centrifugal impeller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214998365U (en) |
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2021
- 2021-06-29 CN CN202121480563.7U patent/CN214998365U/en active Active
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