CN217354880U

CN217354880U - Wind wheel anti-channeling mechanism of centrifugal fan

Info

Publication number: CN217354880U
Application number: CN202122596213.3U
Authority: CN
Inventors: 卢海洋
Original assignee: Ningbo Donglong Electronic Technology Co ltd
Current assignee: Ningbo Donglong Electronic Technology Co ltd
Priority date: 2021-10-27
Filing date: 2021-10-27
Publication date: 2022-09-02
Anticipated expiration: 2031-10-27

Abstract

The utility model relates to a wind wheel anti-shifting mechanism of a centrifugal fan, which comprises a wind wheel and a bracket, wherein the wind wheel is arranged on a mounting seat of the bracket through a rotating shaft, a bearing is arranged in the mounting seat, the rotating shaft is arranged on the bearing, the anti-shifting mechanism is arranged on the rotating shaft close to the bottom of the bracket, the anti-shifting mechanism comprises a snap ring, a wear-resistant gasket and a spring, the snap ring is fixed on the rotating shaft, and two ends of the spring are respectively butted between the bearing and the snap ring through the wear-resistant gasket; the utility model has the advantages that: the anti-shifting mechanism is arranged on the rotating shaft, so that the rotating shaft connected with the wind wheel in the high-speed rotating process can be prevented from axially shifting, and the noise and the vibration of the fan can be reduced; the balance between the centrifugal force of the wind wheel and the magnetic force of the motor can be better kept, so that the motor for driving the rotating shaft is more compact; the motor wind wheel operates more stably, so that the matching gap between the fan and the whole machine can be more compact, and the air cooling effect of the whole machine is improved.

Description

Wind wheel anti-moving mechanism of centrifugal fan

Technical Field

The utility model belongs to the technical field of the fan, especially, relate to a drunkenness mechanism is prevented to centrifugal fan's wind wheel.

Background

The centrifugal fan accelerates gas by utilizing a wind wheel rotating at a high speed according to the principle that kinetic energy is converted into potential energy, and then decelerates and changes the flow direction so as to convert the kinetic energy into the potential energy (pressure); the wind wheel rotates at a high speed in the conversion process, so that the rotating shaft connected with the wind wheel generates axial movement, the noise and vibration of the wind wheel are high in the high-speed rotation process, the centrifugal force of the wind wheel and the magnetic force of the motor are unbalanced, and the performance of the centrifugal fan is not stable enough.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the not enough of prior art existence, and provide a drunkenness mechanism is prevented to centrifugal fan's wind wheel, can prevent that the axial drunkenness from appearing in the axis of rotation that the wind wheel is connected at high-speed rotatory in-process to can reduce the noise and the vibrations of fan.

The utility model aims at accomplishing through following technical scheme, this kind of centrifugal fan's wind wheel anti-channeling mechanism includes wind wheel and support, the wind wheel passes through the axis of rotation and installs on the mount pad of support, install the bearing in the mount pad, the axis of rotation is installed on the bearing, be close to the support bottom install in the axis of rotation and prevent channeling mechanism, prevent channeling mechanism includes snap ring, wear-resisting gasket and spring, the snap ring is fixed in the axis of rotation, the both ends of spring are passed through respectively the wear-resisting gasket butt is in the bearing with between the snap ring.

The utility model has the advantages that: the anti-shifting mechanism is arranged on the rotating shaft, so that the rotating shaft connected with the wind wheel in the high-speed rotating process can be prevented from axially shifting, and the noise and the vibration of the fan can be reduced; the balance between the centrifugal force of the wind wheel and the magnetic force of the motor can be better kept, so that the motor for driving the rotating shaft is more compact; the motor wind wheel operates more stably, so that the fit clearance between the fan and the whole machine can be more compact, and the air cooling effect of the whole machine is improved.

Preferably, a blank cap is installed at the bottom of the bracket, a wear-resistant sheet is installed between the blank cap and the end part of the rotating shaft, and the wear-resistant sheet is fixed on the blank cap; make the assembly of preventing the drunkenness mechanism between axis of rotation and support more convenient through setting up stifle, set up simultaneously wear pad and make and can not take place hard friction between the tip of axis of rotation and the support, and reduce life.

Preferably, a circle of clamping groove is formed in the radial end of the rotating shaft, and the clamping ring is fixed on the clamping groove of the rotating shaft in a clamping mode; thus, the assembly between the clamping ring and the rotating shaft is more convenient.

Preferably, the clamping ring is provided with a plurality of grooves, and the grooves are communicated with the inner ring of the clamping ring; make snap ring and axis of rotation more convenient at installation and dismantlement in-process like this, the axial of snap ring along the axis of rotation can have deformable space to further prevent the drunkenness of axis of rotation simultaneously.

Preferably, the grooves are arranged along the radial direction of the clamping ring and are distributed in a surrounding mode and the like; thus, the elastic force of the snap ring from the spring is more uniform, and the rotating performance of the rotating shaft can be ensured.

Preferably, the two wear-resistant gaskets are sleeved on the rotating shaft and are respectively in close contact with the bearing and the clamping ring through the elastic force of the spring; make the spring can not direct contact with bearing and snap ring through setting up wear pad, greatly increased the life of bearing and snap ring.

Preferably, the diameter of the wear-resistant gasket is larger than that of the bearing, and the diameter of the wear-resistant gasket is equal to that of the snap ring; this ensures effective contact between the wear pad and the bearing and snap ring.

Drawings

Fig. 1 is a schematic view of the front view cross-sectional structure of the present invention.

Fig. 2 is a schematic view of the structure at a in fig. 1.

Fig. 3 is a schematic view of the three-dimensional structure of the snap ring of the present invention.

The reference numbers in the drawings are respectively: 1. a wind wheel; 2. a support; 3. a rotating shaft; 4. a bearing; 5. a snap ring; 6. a wear resistant pad; 7. a spring; 8. covering the blank with a cover; 9. a wear resistant sheet; 21. a mounting seat; 31. a card slot; 51. and (4) a groove.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings: as shown in the attached drawings 1 and 2, the utility model comprises a wind wheel 1 and a bracket 2, the wind wheel 1 is mounted on a mounting seat 21 of the bracket 2 through a rotating shaft 3, a bearing 4 is mounted in the mounting seat 21, the rotating shaft 3 is mounted on the bearing 4, an anti-moving mechanism is mounted on the rotating shaft 3 near the bottom of the bracket 2, the anti-moving mechanism comprises a snap ring 5, a wear-resistant gasket 6 and a spring 7, the snap ring 5 is fixed on the rotating shaft 3, and two ends of the spring 7 are respectively abutted between the bearing 4 and the snap ring 5 through the wear-resistant gasket 6; the two wear-resistant gaskets 6 are sleeved on the rotating shaft 3, and the two wear-resistant gaskets 6 are respectively in close contact with the bearing 4 and the clamping ring 5 through the elastic force of the spring 7; the spring 7 is sleeved on the rotating shaft 3, and the force of the spring 7 can be adjusted according to the axial movement of the motor driving the rotating shaft 3.

The bottom of the bracket 2 is provided with a blank cap 8, and the blank cap 8 is fixed at the bottom of the mounting seat 21 of the bracket 2 in a clamping manner; and a wear-resistant sheet 9 is arranged between the blank cover 8 and the end part of the rotating shaft 3, the wear-resistant sheet 9 is fixed on the blank cover 8, the center of the wear-resistant sheet 9 corresponds to the center of the end part of the rotating shaft 3, and when the stretching tension of the spring 7 is overlarge, the end part of the rotating shaft 3 is abutted against the wear-resistant sheet 9.

A circle of clamping grooves 31 are formed in the radial end of the rotating shaft 3, and the clamping ring 5 is fixed on the clamping grooves 31 of the rotating shaft 3 in a clamping mode; as shown in fig. 3, the snap ring 5 is provided with four grooves 51, the grooves 51 are communicated with the inner ring of the snap ring 5, and the grooves 51 are arranged along the radial direction of the snap ring 5 and are distributed uniformly in a surrounding manner; that is, the openings of the grooves 51 face the center of the snap ring 5, and the inner ring of the snap ring 5 is distributed through the grooves 51 to form cross-shaped flaps; the clamping ring and the rotating shaft are more convenient to mount and dismount, and meanwhile, the elastic force of the clamping ring from the spring is more uniform.

One of the two wear-resistant gaskets 6 has a diameter 6 larger than that of the bearing 4, namely the wear-resistant gasket 6 is abutted against the bearing 4; the other wear-resistant pad 6 has a diameter equal to the diameter of the snap ring 5, i.e. the wear-resistant pad 6 abuts against the snap ring 5.

The utility model discloses an installation process of preventing drunkenness mechanism does: firstly, one wear-resistant gasket 6 of two wear-resistant gaskets 6 is sleeved into the rotating shaft 3, then the spring 7 and the other wear-resistant gasket 6 are sleeved into the rotating shaft 3, finally the clamping ring 5 is sleeved into the rotating shaft 3 and clamped and fixed in a clamping manner, and the blank cap 8 fixed with the wear-resistant gasket 9 is clamped and fixed at the bottom of the mounting seat 21 of the bracket 2.

The present invention is not limited to the above embodiments, and any change is made on the shape or material composition, and all the structural designs provided by the present invention are all the deformation of the present invention, which should be considered within the protection scope of the present invention.

Claims

1. The utility model provides a centrifugal fan's wind wheel anti-channeling mechanism, includes wind wheel (1) and support (2), install through axis of rotation (3) wind wheel (1) on mount pad (21) of support (2), its characterized in that: install bearing (4) in mount pad (21), axis of rotation (3) are installed on bearing (4), be close to support (2) bottom install on axis of rotation (3) and prevent the drunkenness mechanism, prevent that the drunkenness mechanism includes snap ring (5), wear-resisting gasket (6) and spring (7), snap ring (5) are fixed on axis of rotation (3), the both ends of spring (7) are passed through respectively wear-resisting gasket (6) butt is in bearing (4) with between snap ring (5).

2. The wind wheel anti-drunkenness mechanism of the centrifugal fan according to claim 1, characterized in that: stifle (8) is installed to support (2) bottom, just stifle (8) with install wear pad (9) between the tip of axis of rotation (3), just wear pad (9) are fixed on stifle (8).

3. The wind wheel anti-drunkenness mechanism of the centrifugal fan according to claim 1, characterized in that: the radial end of axis of rotation (3) is equipped with round draw-in groove (31), snap ring (5) are fixed through the mode of joint on draw-in groove (31) of axis of rotation (3).

4. The wind wheel anti-drunkenness mechanism of the centrifugal fan according to claim 1 or 3, characterized in that: the clamping ring (5) is provided with a plurality of grooves (51), and the grooves (51) are communicated with the inner ring of the clamping ring (5).

5. The wind wheel anti-drunkenness mechanism of the centrifugal fan according to claim 4, characterized in that: the grooves (51) are arranged along the radial direction of the snap ring (5) and are distributed in a surrounding mode and the like.

6. The wind wheel anti-drunkenness mechanism of the centrifugal fan according to claim 1, characterized in that: the wear-resistant gasket (6) is provided with two pieces and is sleeved on the rotating shaft (3), and the two pieces are respectively in close contact with the bearing (4) and the clamping ring (5) through the elastic force of the spring (7).

7. The wind wheel anti-drunkenness mechanism of the centrifugal fan according to claim 1 or 6, characterized in that: the diameter of the wear-resistant gasket (6) is larger than that of the bearing (4), and the diameter of the wear-resistant gasket (6) is equal to that of the clamping ring (5).