CN210660757U - Exempt from centrifugal fan of screw bush pressure equipment - Google Patents
Exempt from centrifugal fan of screw bush pressure equipment Download PDFInfo
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- CN210660757U CN210660757U CN201921690696.XU CN201921690696U CN210660757U CN 210660757 U CN210660757 U CN 210660757U CN 201921690696 U CN201921690696 U CN 201921690696U CN 210660757 U CN210660757 U CN 210660757U
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- bushing
- bush
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Abstract
A centrifugal fan free of screw bushing press fitting comprises a centrifugal impeller, a driving device and a bearing device. The centrifugal impeller comprises a centrifugal impeller main body, a driving device accommodating barrel and a rotating shaft. The driving device comprises a stator mechanism and rotor magnetic steel. The bearing device comprises a first bushing, a second bushing, a first bearing and a second bearing. The first bushing includes a first insertion bushing, a first bearing mounting bushing. The second bushing comprises a second inserting bushing and a second bearing mounting bushing. The second inserting bush comprises a second inserting bush main body, a first convex block and a second convex block. On the cross section along the central shaft of the rotating shaft, the maximum outer diameter of the second inserting bush is larger than the inner diameter of the stator mechanism, and the outer diameter of the first inserting bush is larger than the inner diameter of the stator mechanism, so that the first bush and the second bush are in interference fit with the stator mechanism. This exempt from centrifugal fan of screw bush pressure equipment has practiced thrift the equipment time, improves production efficiency.
Description
Technical Field
The utility model belongs to the technical field of the fan is made, especially a exempt from centrifugal fan of screw bush pressure equipment.
Background
The axial flow fan is a fan in which airflow flows in the axial direction along the axial direction in a flow channel of a rotating blade after entering a fan impeller. The centrifugal fan is a fan in which air flow enters a rotating blade channel, and the air is compressed and flows along the radial direction under the action of centrifugal force. The centrifugal fan changes the flow direction of the medium in the air pipe, and the axial flow fan does not change the flow direction of the medium in the air pipe. The axial flow fan has the characteristics of large flow, small volume and low pressure head.
The centrifugal fan is composed of a casing, a motor, a bearing, a bush and the like. At present, two bushings are arranged in a centrifugal fan, and when the centrifugal fan is installed, the two bushings are connected together through screws so that the position of the bushings is stable. However, when the screw is installed, the screw needs to be installed for many times, the steps are complicated, the processing time is prolonged, and the labor intensity of workers is enhanced.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a screw bush pressure equipment's centrifugal fan exempts from that equipment time can be practiced thrift to satisfy the industrial demand.
A centrifugal fan free of screw bushing press fitting comprises a centrifugal impeller, a driving device accommodated in the centrifugal impeller, and bearing devices arranged at two ends of the driving device. The centrifugal impeller comprises a centrifugal impeller main body, a driving device accommodating barrel accommodated on the centrifugal impeller main body, and a rotating shaft arranged in the central position in the driving device accommodating barrel. The driving device comprises a stator mechanism and rotor magnetic steel arranged on the outer side of the stator mechanism. The driving device is accommodated in the driving device accommodating barrel. The driving device and the bearing device are sleeved on the rotating shaft. The bearing device comprises a first lining, a second lining, a first bearing and a second bearing, wherein the first lining is accommodated in the accommodating barrel of the driving device and inserted into one end of the stator mechanism, the second lining is inserted into the other end of the stator mechanism, the first bearing is accommodated in the first lining, and the second bearing is accommodated in the second lining. The first bushing includes a first insertion bushing, and a first bearing mounting bushing disposed at one end of the first insertion bushing. The second bushing comprises a second inserting bushing and a second bearing mounting bushing arranged at one end of the second inserting bushing. The second inserting bush comprises a second inserting bush main body, a plurality of first convex blocks arranged on the side wall of the second inserting bush main body at intervals, and a plurality of second convex blocks respectively arranged on the first convex blocks. Each first bump is provided with one second bump. On the cross section along the central shaft of the rotating shaft, the maximum outer diameter of the second inserting bush is larger than the inner diameter of the stator mechanism, and the outer diameter of the first inserting bush is larger than the inner diameter of the stator mechanism, so that the first bush and the second bush are in interference fit with the stator mechanism.
Further, the rotor magnetic steel is annular.
Furthermore, the second bushing also comprises a base arranged at one end of the second bearing mounting bushing, which is far away from the second insertion bushing.
Further, centrifugal impeller still includes a plurality of settings and is in the gasket of pivot one end, and one setting is in the screw of pivot one end, the gasket with the screw all set up in the free end of pivot, the gasket with the external diameter of screw all is greater than the internal diameter of second bearing.
Further, the inner diameter of the first inserting bush is smaller than the inner diameter of the first bearing mounting bush, the outer diameter of the first inserting bush is smaller than the outer diameter of the first bearing mounting bush, the inner diameter of the second inserting bush is smaller than the inner diameter of the second bearing mounting bush, the outer diameter of the second inserting bush is smaller than the outer diameter of the second bearing mounting bush, and the inner diameter of the first inserting bush is equal to the inner diameter of the second inserting bush.
Further, the edges of the first bushing are provided with chamfers.
Furthermore, the number of the first bumps and the number of the second bumps are even, and an included angle between any two adjacent first bumps and an included angle between any two adjacent second bumps are equal.
Further, the length of the first bump is greater than that of the second bump, and the connecting position of the first bump and the second bump is stepped.
Compared with the prior art, the utility model provides a exempt from centrifugal fan of screw bush pressure equipment passes through drive arrangement and the bearing arrangement drive centrifugal impeller rotates. The bearing device comprises a first lining which is contained in the containing barrel of the driving device and is inserted into one end of the stator mechanism, and a second lining which is inserted into the other end of the stator mechanism. The second bushing comprises a second inserting bushing and a second bearing mounting bushing arranged at one end of the second inserting bushing. The second inserting bush comprises a second inserting bush main body, a plurality of first convex blocks arranged on the side wall of the second inserting bush main body at intervals, and a plurality of second convex blocks respectively arranged on the first convex blocks. On the section along the central axis of the rotating shaft, the maximum outer diameter of the second inserting bush is larger than the inner diameter of the stator mechanism. The outer diameter of the first inserting bush is larger than the inner diameter of the stator mechanism, so that the first bush and the second bush are in interference fit with the stator mechanism, the first bush and the second bush are stably arranged at two ends of the stator mechanism, and the stator mechanism is not required to be fixed by screws. This exempt from centrifugal fan of screw bush pressure equipment has practiced thrift the equipment time, and it is convenient to install, improves production efficiency, has reduced labourer's intensity.
Drawings
Fig. 1 is the utility model provides a exempt from section structure schematic diagram of centrifugal fan of screw bush pressure equipment.
Fig. 2 is a schematic structural diagram of a second bushing in the screw-bushing-free press-fitting centrifugal fan shown in fig. 1.
Fig. 3 is a partial enlarged structural view of the second bushing at a in fig. 2.
Detailed Description
Specific examples of the present invention will be described in further detail below. It should be understood that the description herein of embodiments of the invention is not intended to limit the scope of the invention.
As shown in fig. 1 to fig. 3, it is a schematic structural diagram of the centrifugal fan without screw bushing press-fitting provided by the present invention. The screw bushing-free press-fitting centrifugal fan comprises a centrifugal impeller 10, a driving device 20 accommodated in the centrifugal impeller 10, and a bearing device 30 arranged at two ends of the driving device 20. The screw bushing free press-fitting centrifugal fan further comprises other functional modules, such as assembling components and the like, which are well known to those skilled in the art, and will not be described in detail herein.
The centrifugal impeller 10 includes a centrifugal impeller body 11, a drive unit accommodating cylinder 12 accommodated in the centrifugal impeller body 11, a rotating shaft 13 provided in a central position in the drive unit accommodating cylinder 11, a plurality of spacers 14 provided at one end of the rotating shaft 13, and a screw 15 provided at one end of the rotating shaft 14.
The centrifugal impeller main body 11 refers to a wind wheel which supplies air axially and discharges air radially, applies work by using centrifugal force to improve pressure of the air, and the centrifugal impeller main body 11 is driven by the driving device 20 to rotate.
The drive unit receiving cartridge 12 is used to mount the drive unit 20.
The rotating shaft 13 is inserted into the driving device 20 and the bearing device 30. The central axes of the rotating shaft 13, the driving device 20, and the bearing device 30 are all coincident, so that the driving device 20 and the bearing device 30 are accommodated in the driving device accommodating barrel 12. The driving device 20 and the bearing device 30 are all sleeved on the rotating shaft 13.
The washer 14 and the screw 15 are both disposed at the free end of the rotating shaft 13, and the outer diameters of the washer 14 and the screw 15 are both larger than the inner diameter of the second bearing 34, which will be described below, so as to limit the positions of the driving device 20 and the bearing device 30 on the centrifugal impeller 10.
The driving device 20 includes a stator mechanism 21, and a rotor magnetic steel 22 disposed outside the stator mechanism 21. The driving device 20 is accommodated in the driving device accommodating cylinder 12.
The stator mechanism 21 is sleeved on the rotating shaft 13 and is embedded on the inner wall of the driving device accommodating cylinder 12. The stator mechanism 21 is a prior art.
The rotor magnetic steel is annular, can be cylindrical, annular, has rhombus, has tile shape, has squarely, and it has different shapes according to the demand of difference. In this embodiment, the rotor magnetic steel 22 is annular. The rotor magnet 22 is a component common to centrifugal fans and is embedded in the drive device accommodating cylinder 12. As is well known, the rotor magnet 22 is made of a rare earth material with strong magnetism. The working principle is that the stator mechanism 21 generates a rotating magnetic field after being electrified. And the magnetic field and the rotor magnetic steel 22 can generate a magnetic field interaction force, so that the centrifugal impeller 10 is pushed to rotate, and the purpose of air outlet is achieved.
The bearing device 30 includes a first bushing 31 received in the driving device receiving cylinder 12 and inserted into one end of the stator mechanism 21, a second bushing 32 inserted into the other end of the stator mechanism 21, a first bearing 33 received in the first bushing 31, and a second bearing 34 received in the second bushing 32. The bearing device 30 is used for supporting the centrifugal impeller 10 to rotate.
The first bush 31 includes a first inserting bush 311, a first bearing mounting bush 312 provided at one end of the first inserting bush. The outer diameter of the first insertion bush 311 is larger than the inner diameter of the stator mechanism 21. The inner diameter of the first inserting bush 311 is smaller than the inner diameter of the first bearing mounting bush 312, the outer diameter of the first inserting bush 311 is smaller than the outer diameter of the first bearing mounting bush 312, so that the connection position of the first inserting bush 311 and the first bearing mounting bush 312 is stepped, and the outer diameter of the first bearing 33 is equal to the inner diameter of the first bearing mounting bush 312, so that the position of the first bearing 33 within the first bearing mounting bush 312 is stable. The edges of the first bush 31 are chamfered to facilitate the assembly of the first bush 31.
The second bush 32 includes a second inserting bush 321, a second bearing mounting bush 322 provided at an end of the second inserting bush, and a base 323 provided at an end of the second bearing mounting bush 322 remote from the second inserting bush 321.
The second inserting bush 321 includes a second inserting bush main body 3211, a plurality of first protrusions 3212 spaced apart from each other on a side wall of the second inserting bush main body, and a plurality of second protrusions 3213 respectively disposed on the first protrusions 3212. Each of the first bumps 3212 is provided with one of the second bumps 3213. The first protrusions 3212 and the second protrusions 3213 are even in number, and an included angle between any two adjacent first protrusions 3212 and an included angle between any two adjacent second protrusions 3213 are equal to each other, and it is conceivable that any one of the first protrusions 3212 and the other one of the first protrusions 3212 are symmetrical to each other along a central axis of the second insertion bush 321. Any one of the second protrusions 3213 and the other second protrusion 3213 are symmetrical to each other along a central axis of the second inserting bush 321. The length of the first protrusion 3212 is greater than the length of the second protrusion 3213, the connecting position between the first protrusion 3212 and the second protrusion 3213 is stepped, and when the second insertion bush 321 is inserted into the stator mechanism 21, the first protrusion 3212 and the second protrusion 3213 are sequentially inserted into the stator mechanism 21.
The second bearing mounting bushing 322 is adapted to receive the second bearing 34. The inner diameter of the second inserting bush 321 is smaller than the inner diameter of the second bearing mounting bush 322, and the outer diameter of the second inserting bush 321 is smaller than the outer diameter of the second bearing mounting bush 322, so that the connecting position of the second inserting bush 321 and the second bearing mounting bush 322 is stepped, and the second bearing mounting bush 322 can accommodate the second bearing 34 conveniently. The inner diameter of the first inserting bush 311 is equal to the inner diameter of the second inserting bush 321.
The base 323 restricts the position of the driving device 20 within the driving device accommodating tube 12 to stabilize the position of the driving device 20 within the driving device accommodating tube 12.
In a cross section along the central axis of the rotating shaft 13, the maximum outer diameter of the second insertion bush 321 is larger than the inner diameter of the stator mechanism 21. The outer diameter of the first insertion bush 311 is larger than the inner diameter of the stator mechanism 21, so that the first bush 311 and the second bush 321 are in interference fit with the stator mechanism 21, the first bush 31 and the second bush 32 are stably arranged at two ends of the stator mechanism 21, screw fixation is not needed, and assembling time is saved. When the stator mechanism 21 is installed with the first bushing 31 and the second bushing 32, the second bushing 32 is first press-fitted to one side of the stator mechanism 21, and then the first bushing 31 is press-fitted to the other side of the stator mechanism 21.
The first bearing 33 and the second bearing 34 are both sleeved on the rotating shaft 13, and are both used for supporting the centrifugal impeller 10 to rotate, so as to reduce the friction coefficient in the movement process and ensure the rotation precision of the centrifugal impeller.
Compared with the prior art, the utility model provides a exempt from centrifugal fan of screw bush pressure equipment passes through drive arrangement 20 and bearing arrangement 30 drive centrifugal impeller 10 rotates. The bearing device 30 includes a first bushing 31 received in the driving device receiving cylinder 12 and inserted into one end of the stator mechanism 21, and a second bushing 32 inserted into the other end of the stator mechanism 21. The second bush 32 includes a second inserting bush 321, and a second bearing mounting bush 322 provided at one end of the second inserting bush. The second inserting bush 321 includes a second inserting bush main body 3211, a plurality of first protrusions 3212 spaced apart from each other on a side wall of the second inserting bush main body, and a plurality of second protrusions 3213 respectively disposed on the first protrusions 3212. In a cross section along the central axis of the rotating shaft 13, the maximum outer diameter of the second insertion bush 321 is larger than the inner diameter of the stator mechanism 21. The outer diameter of the first insertion bush 311 is larger than the inner diameter of the stator mechanism 21, so that the first bush 311 and the second bush 321 are in interference fit with the stator mechanism 21, the first bush 31 and the second bush 32 are stably arranged at two ends of the stator mechanism 21, and the first bush and the second bush are not required to be fixed by screws. This exempt from centrifugal fan of screw bush pressure equipment has practiced thrift the equipment time, and it is convenient to install, improves production efficiency, has reduced labourer's intensity.
The above description is only for the preferred embodiment of the present invention and should not be construed as limiting the scope of the present invention, and any modification, equivalent replacement or improvement within the spirit of the present invention is encompassed by the claims of the present invention.
Claims (8)
1. The utility model provides a exempt from centrifugal fan of screw bush pressure equipment which characterized in that: the centrifugal fan without screw bushing press fitting comprises a centrifugal impeller, a driving device and a bearing device, wherein the driving device is accommodated in the centrifugal impeller, the bearing device is arranged at two ends of the driving device, the centrifugal impeller comprises a centrifugal impeller main body, a driving device accommodating barrel is accommodated on the centrifugal impeller main body, a rotating shaft is arranged in the central position in the driving device accommodating barrel, the driving device comprises a stator mechanism and rotor magnetic steel arranged at the outer side of the stator mechanism, the driving device is accommodated in the driving device accommodating barrel, the driving device and the bearing device are both sleeved on the rotating shaft, the bearing device comprises a first bushing and a second bushing, the first bushing is accommodated in the driving device accommodating barrel and inserted at one end of the stator mechanism, and the second bushing is inserted at the other end of the stator mechanism, a first bearing received in the first bushing, and a second bearing received in the second bushing, the first bushing including a first insert bushing, a first bearing mount bushing disposed at an end of the first insert bushing, the second bushing including a second insert bushing, a second bearing mount bushing disposed at an end of the second insert bushing, the second insert bushing including a second insert bushing body, a plurality of first protrusions spaced apart from each other on a sidewall of the second insert bushing body, and a plurality of second protrusions respectively disposed on the first protrusions, each of the first protrusions having one of the second protrusions, the second insert bushing having a maximum outer diameter greater than an inner diameter of the stator mechanism in a cross section along a central axis of the rotating shaft, and the first insert bushing having an outer diameter greater than the inner diameter of the stator mechanism, so that the first bushing and the second bushing are in interference fit with the stator mechanism.
2. The screw bushing press-fitting-free centrifugal fan according to claim 1, wherein: the rotor magnetic steel is annular.
3. The screw bushing press-fitting-free centrifugal fan according to claim 1, wherein: the second bushing also comprises a base arranged at one end of the second bearing mounting bushing, which is far away from the second inserting bushing.
4. The screw bushing press-fitting-free centrifugal fan according to claim 1, wherein: centrifugal impeller still includes a plurality of settings and is in the gasket of pivot one end, and one sets up the screw of pivot one end, the gasket with the screw all set up in the free end of pivot, the gasket with the external diameter of screw all is greater than the internal diameter of second bearing.
5. The screw bushing press-fitting-free centrifugal fan according to claim 1, wherein: the inner diameter of the first inserting bush is smaller than that of the first bearing mounting bush, the outer diameter of the first inserting bush is smaller than that of the first bearing mounting bush, the inner diameter of the second inserting bush is smaller than that of the second bearing mounting bush, the outer diameter of the second inserting bush is smaller than that of the second bearing mounting bush, and the inner diameter of the first inserting bush is equal to that of the second inserting bush.
6. The screw bushing press-fitting-free centrifugal fan according to claim 1, wherein: the edges of the first bushing are provided with chamfers.
7. The screw bushing press-fitting-free centrifugal fan according to claim 1, wherein: the first bumps and the second bumps are even in number, and the included angle between any two adjacent first bumps and the included angle between any two adjacent second bumps are equal.
8. The screw bushing press-fitting-free centrifugal fan according to claim 1, wherein: the length of the first bump is greater than that of the second bump, and the connecting position of the first bump and the second bump is stepped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921690696.XU CN210660757U (en) | 2019-09-30 | 2019-09-30 | Exempt from centrifugal fan of screw bush pressure equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921690696.XU CN210660757U (en) | 2019-09-30 | 2019-09-30 | Exempt from centrifugal fan of screw bush pressure equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210660757U true CN210660757U (en) | 2020-06-02 |
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ID=70841750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921690696.XU Active CN210660757U (en) | 2019-09-30 | 2019-09-30 | Exempt from centrifugal fan of screw bush pressure equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210660757U (en) |
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2019
- 2019-09-30 CN CN201921690696.XU patent/CN210660757U/en active Active
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