CN212106385U

CN212106385U - High-strength noise-reduction centrifugal fan

Info

Publication number: CN212106385U
Application number: CN202020529817.9U
Authority: CN
Inventors: 印亚栋
Original assignee: Jiangsu Yuanjia Air Conditioning Equipment Co ltd
Current assignee: Jiangsu Yuanjia Air Conditioning Equipment Co ltd
Priority date: 2020-04-13
Filing date: 2020-04-13
Publication date: 2020-12-08
Anticipated expiration: 2030-04-13

Abstract

The utility model discloses a high strength noise reduction centrifugal fan, including shell body, damper and noise reduction mechanism, be provided with the collar on the inside wall of shell body, be provided with the motor on the lower terminal surface of collar inside, the output of motor is provided with the transmission shaft, be provided with the flabellum on the transmission shaft, damper sets up on the shell body, damper comprises annular liquid reserve tank, a plurality of arc, buffer solution, fixed column, a plurality of transfer line, spring and a plurality of buffer board, be provided with annular liquid reserve tank in the outside of collar on the shell body, the inside sliding connection of annular liquid reserve tank has a plurality of arc; the utility model discloses simple structure, reasonable in design can reduce the vibrations effort that the motor during operation produced effectively, and the reliability is higher, increases the stability of centrifugal fan during operation, with shunting gas, collision when reducing the gas circulation, and the noise cancelling effect is better.

Description

High-strength noise-reduction centrifugal fan

Technical Field

The utility model belongs to the technical field of centrifugal fan equipment, concretely relates to high strength noise reduction centrifugal fan

Background

The centrifugal fan is a driven fluid machine which increases the gas pressure and discharges gas by means of input mechanical energy, and is widely used for ventilation, dust exhaust and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings; ventilation and draught of boilers and industrial furnaces; cooling and ventilation in air conditioning equipment and household appliances; drying and selecting grains; wind tunnel wind source and air cushion boat inflation and propulsion, but the centrifugal fan still has various problems at present.

For example, the centrifugal fan with high strength and noise reduction disclosed in the publication No. CN 210068586U can improve the flow guiding effect of the centrifugal fan, so that the flow field of the centrifugal fan is long, the flow field is more uniform, and the heat exchange efficiency is improved, but the vibration reduction mainly aims at the vibration of the fan blades, and the vibration source mainly generates by the work of the motor, so that the vibration reduction effect is poor, and meanwhile, although there is a certain noise reduction effect, the gas is easy to collide to generate noise when rapidly circulating.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a high strength noise reduction centrifugal fan to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a high-strength noise-reduction centrifugal fan comprises an outer shell, a damping mechanism and a silencing mechanism, wherein an installation ring is arranged on the inner side wall of the outer shell, a motor is arranged on the lower end face inside the installation ring, a transmission shaft is arranged at the output end of the motor, fan blades are arranged on the transmission shaft, the damping mechanism is arranged on the outer shell and consists of an annular liquid storage tank, a plurality of arc-shaped plates, a buffer solution, a fixed column, a plurality of transmission rods, a spring and a plurality of buffer plates, the annular liquid storage tank is arranged on the outer side of the installation ring on the outer shell, the plurality of arc-shaped plates are connected inside the annular liquid storage tank in a sliding mode, the buffer solution is arranged at the upper end and the lower end of each arc-shaped plate inside the annular liquid storage tank, the fixed column is arranged on the side face of each arc-, the annular liquid storage tank is characterized in that a plurality of springs are arranged on the inner side wall of the annular liquid storage tank, a buffer plate is arranged at the other end of each spring, an air guide pipe is arranged on the side face of one side of the outer shell through an opening, and the silencing mechanism is arranged inside the air guide pipe.

Preferably, the silencing mechanism comprises a plurality of partition plates, a guide plate, a plurality of guide holes, a plurality of silencing plates, a fixed plate and a plurality of exhaust holes, the lower end of the air guide pipe is provided with the plurality of partition plates, the upper end of each partition plate is provided with the guide plate, the guide plate is arranged on the inner side wall of the air guide pipe, the guide plate is provided with the plurality of guide holes, the upper end surface of the guide plate is provided with the plurality of silencing plates, the upper end surface of each silencing plate is provided with the fixed plate, and the fixed plate is provided with the plurality of exhaust holes.

Preferably, the outer shell is provided with an installation frame, and the installation frame is provided with a first dustproof net.

Preferably, the outer shell is provided with a conical air deflector on the outer side of the fan blade, and the inner side walls of the outer shell and the air guide pipe are both provided with silencing cotton.

Preferably, the transmission shaft is movably provided with a limiting ring, the outer side surface of the limiting ring is provided with a plurality of supporting rods, and the other ends of the supporting rods are arranged on the outer shell.

Preferably, one side of the transmission rod adjacent to one side of the buffer plate is provided with a chamfer surface.

Preferably, a reinforcing rod is arranged on the outer side surface of one side of the air guide pipe, and the other end of the reinforcing rod is arranged on the outer shell.

Preferably, a second dust screen is arranged at the upper end inside the air guide pipe.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) the utility model discloses a be provided with damper and set up on the shell body, damper comprises annular liquid reserve tank, a plurality of arc, buffer solution, fixed column, a plurality of transfer line, spring and a plurality of buffer board, through damper's effect, can reduce the vibrations effort that the motor produced during operation effectively, the reliability is higher, increases centrifugal fan during operation's stability;

(2) the utility model discloses a be provided with noise cancelling mechanism, noise cancelling mechanism sets up in the inside of guide duct, and noise cancelling mechanism comprises a plurality of division board, guide plate, a plurality of water conservancy diversion hole, a plurality of acoustical panel, fixed plate and a plurality of exhaust hole, through noise cancelling mechanism's effect, shunts gas, collision when reducing the gas circulation, and the noise cancelling effect is better.

Drawings

FIG. 1 is an overall front view of the present invention;

FIG. 2 is a schematic view of the overall internal structure of the present invention;

fig. 3 is a schematic view of the internal structure of the air duct of the present invention;

FIG. 4 is a schematic view of the installation of the damping mechanism of the present invention;

fig. 5 is an enlarged schematic view of a portion a in fig. 4 according to the present invention.

In the figure: 1. an outer housing; 101. installing a frame; 102. a first dust screen; 103. a tapered air deflector; 104. silencing cotton; 2. a damping mechanism; 21. a liquid storage tank; 22. an arc-shaped plate; 23. a buffer solution; 24. fixing a column; 25. a transmission rod; 26. a spring; 27. a buffer plate; 3. a silencing mechanism; 31. a separator plate; 32. a baffle; 33. a flow guide hole; 34. a sound-absorbing panel; 35. a fixing plate; 36. an exhaust hole; 4. a mounting ring; 5. a motor; 6. a drive shaft; 61. a limiting ring; 62. a support bar; 7. a fan blade; 8. an air guide pipe; 81. a reinforcing bar; 82. and a second dust screen.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a high-strength noise-reducing centrifugal fan, which comprises: a high-strength noise-reduction centrifugal fan comprises an outer shell 1, a damping mechanism 2 and a silencing mechanism 3, wherein an installation ring 4 is welded on the inner side wall of the outer shell 1, a motor 5 is installed on the lower end face inside the installation ring 4 through a bolt, a transmission shaft 6 is installed at the output end of the motor 5, fan blades 7 are installed on the transmission shaft 6, the damping mechanism 2 is installed on the outer shell 1, the damping mechanism 2 comprises an annular liquid storage box 21, a plurality of arc-shaped plates 22, a buffer solution 23, a fixing column 24, a plurality of transmission rods 25, a spring 26 and a plurality of buffer plates 27, the annular liquid storage box 21 is welded on the outer side of the installation ring 4 on the outer shell 1, the plurality of arc-shaped plates 22 are connected inside the annular liquid storage box 21 in a sliding mode, the buffer solution 23 is filled at the upper end and the lower end of each arc-shaped plate 22, the transmission rods 25 are welded on two sides of the fixed column 24, a plurality of springs 26 are mounted on the inner side wall of the annular liquid storage box 21, a buffer plate 27 is mounted at the other end of each spring 26, the air guide pipe 8 is welded on the side face of one side of the outer shell 1 through an opening, and the silencing mechanism 3 is mounted inside the air guide pipe 8.

In this embodiment, it is preferable that silencing mechanism 3 comprises a plurality of division board 31, guide plate 32, a plurality of water conservancy diversion hole 33, a plurality of acoustical panel 34, fixed plate 35 and a plurality of exhaust hole 36, the lower extreme welding of guide duct 8 has a plurality of division board 31, the upper end welding of division board 31 has guide plate 32, guide plate 32 welds on the inside wall of guide duct 8, a plurality of water conservancy diversion hole 33 has been seted up on the guide plate 32, the welding has a plurality of acoustical panel 34 on the up end of guide plate 32, the welding has fixed plate 35 on the up end of acoustical panel 34, a plurality of exhaust hole 36 has been seted up on the fixed plate 35.

In this embodiment, preferably, the outer casing 1 is welded with the mounting frame 101, and the mounting frame 101 is provided with the first dust screen 102, so as to prevent dust from entering the inner part of the outer casing 1.

In this embodiment, preferably, the outer casing 1 is welded with a tapered air guiding plate 103 on the outer side of the fan blade 7, and the inner side walls of the outer casing 1 and the air guiding pipe 8 are both provided with silencing cotton 104, which is beneficial to better guide the airflow circulation of the fan blade 7.

In this embodiment, preferably, the transmission shaft 6 is provided with a limiting ring 61 through a bearing, the outer side surface of the limiting ring 61 is welded with a plurality of supporting rods 62, and the other ends of the supporting rods 62 are welded on the outer shell 1, so that the stability of the transmission shaft 6 is improved.

In this embodiment, preferably, the adjacent sides of the transmission rod 25 and the buffer plate 27 are cut to form chamfers, which is beneficial to better transmission between the transmission rod 25 and the buffer plate 27.

In this embodiment, preferably, the reinforcing rod 81 is welded to the outer side surface of one side of the air guide duct 8, and the other end of the reinforcing rod 81 is welded to the outer casing 1, which is beneficial to increasing the stability between the outer casing 1 and the air guide duct 8.

In this embodiment, preferably, the second dust-proof net 82 is installed at the upper end inside the air duct 8, which is beneficial to further preventing dust from entering the inside of the outer casing 1.

The utility model discloses a theory of operation and use flow: in the device, when motor 5 work produces vibrations effort, transmission through buffer solution 23, can make arc 22 lapse, during arc 22 downstream, transfer line 25 extrusion buffer board 27, realize the upper and lower slip of arc 22, consume the upper and lower shake effort that motor 5 work produced, simultaneously through division board 31, guide plate 32, and the water conservancy diversion and the 34 effect of a plurality of acoustical panel of a plurality of water conservancy diversion hole 33, collision when reducing the air current fast circulation, this device can reduce the vibrations effort that motor 5 during operation produced effectively, the reliability is higher, increase the stability of centrifugal fan during operation.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a high strength noise reduction centrifugal fan, includes shell body (1), damper (2) and canceling sound mechanical system (3), its characterized in that: the damping device is characterized in that a mounting ring (4) is arranged on the inner side wall of the outer shell (1), a motor (5) is arranged on the lower end face of the interior of the mounting ring (4), a transmission shaft (6) is arranged at the output end of the motor (5), fan blades (7) are arranged on the transmission shaft (6), the damping mechanism (2) is arranged on the outer shell (1), the damping mechanism (2) is composed of an annular liquid storage box (21), a plurality of arc-shaped plates (22), a damping liquid (23), a fixing column (24), a plurality of transmission rods (25), a spring (26) and a plurality of buffer plates (27), the annular liquid storage box (21) is arranged on the outer side of the mounting ring (4) on the outer shell (1), the plurality of arc-shaped plates (22) are connected to the interior of the annular liquid storage box (21) in a sliding manner, the damping liquid (23) is arranged at the upper end and the, the motor-driven silencer is characterized in that a fixing column (24) is arranged on the side, away from the motor (5), of the arc-shaped plate (22), transmission rods (25) are arranged on two sides of the fixing column (24), a plurality of springs (26) are arranged on the inner side wall of the annular liquid storage box (21), a buffer plate (27) is arranged at the other end of each spring (26), an air guide pipe (8) is arranged on the side, on one side of the outer shell (1), of the opening, and the silencing mechanism (3) is arranged inside the air guide pipe (8).

2. The high-strength noise-reduction centrifugal fan according to claim 1, wherein: the silencing mechanism (3) is composed of a plurality of partition plates (31), a guide plate (32), a plurality of flow guide holes (33), a plurality of silencing plates (34), a fixing plate (35) and a plurality of exhaust holes (36), the lower end of the air guide pipe (8) is provided with the plurality of partition plates (31), the upper end of each partition plate (31) is provided with the guide plate (32), the guide plate (32) is arranged on the inner side wall of the air guide pipe (8), the guide plate (32) is provided with the plurality of flow guide holes (33), the upper end face of the guide plate (32) is provided with the plurality of silencing plates (34), the upper end face of each silencing plate (34) is provided with the fixing plate (35), and the fixing plate (35) is provided with the plurality of exhaust holes (36).

3. The high-strength noise-reduction centrifugal fan according to claim 1, wherein: the dustproof device is characterized in that an installation frame (101) is arranged on the outer shell (1), and a first dustproof net (102) is arranged on the installation frame (101).

4. The high-strength noise-reduction centrifugal fan according to claim 1, wherein: the fan is characterized in that a conical air deflector (103) is arranged on the outer side of the fan blade (7) on the outer shell (1), and silencing cotton (104) is arranged on the inner side walls of the outer shell (1) and the air guide pipe (8).

5. The high-strength noise-reduction centrifugal fan according to claim 1, wherein: the upper movable limiting ring (61) is arranged on the transmission shaft (6), a plurality of supporting rods (62) are arranged on the outer side face of the limiting ring (61), and the other ends of the supporting rods (62) are arranged on the outer shell (1).

6. The high-strength noise-reduction centrifugal fan according to claim 1, wherein: and one sides of the transmission rod (25) adjacent to the buffer plate (27) are both provided with inclined cutting planes.

7. The high-strength noise-reduction centrifugal fan according to claim 1, wherein: a reinforcing rod (81) is arranged on the outer side surface of one side of the air guide pipe (8), and the other end of the reinforcing rod (81) is arranged on the outer shell (1).

8. The high-strength noise-reduction centrifugal fan according to claim 1, wherein: and a second dust screen (82) is arranged at the upper end in the air guide pipe (8).