CN110864001A

CN110864001A - High-efficiency low-vibration low-noise centrifugal fan

Info

Publication number: CN110864001A
Application number: CN201911311838.1A
Authority: CN
Inventors: 巫蕊; 赵鹰; 周红兵; 吴健
Original assignee: Far East Shuangcheng Fan Jiangsu Co Ltd
Current assignee: Far East Shuangcheng Fan Jiangsu Co Ltd
Priority date: 2019-12-18
Filing date: 2019-12-18
Publication date: 2020-03-06

Abstract

The invention discloses a high-efficiency low-vibration low-noise centrifugal fan, which comprises a base, wherein a balancing weight is fixedly arranged in the middle of the bottom end of the inner wall of the base, the top end of the base is fixedly connected with the bottom end of a mounting plate through a bolt, a vibration damping base plate is arranged between the top end of the base and the mounting plate in a cushioning manner, and a motor is fixedly arranged in the middle of the top end of the mounting plate; be equipped with the puigging that the sponge that gives sound insulation made through hush pipe inner wall surface, the hush intraductal acoustic celotex board that is equipped with has seted up the crisscross ventilation hole in position on the acoustic celotex board, makes this centrifugal fan produce littleer noise at the during operation, has protected all ring edge borders, has guaranteed staff's normal work.

Description

High-efficiency low-vibration low-noise centrifugal fan

Technical Field

The invention relates to a centrifugal fan, in particular to a high-efficiency low-vibration low-noise centrifugal fan.

Background

The centrifugal fan is a driven fluid machine which increases the pressure of gas and discharges the gas by means of input mechanical energy. Centrifugal fans are widely used in ventilation, dust removal 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.

However, the existing centrifugal fan has certain defects: the existing centrifugal fan can generate larger vibration, when the fan works, the fan parts can be loosened due to long-time large-amplitude vibration, the fan is damaged, and property loss is caused; the existing centrifugal fan has large noise, and the fan generates large noise to influence not only the surrounding environment but also the normal work of workers, so that the work efficiency is reduced.

Disclosure of Invention

The invention aims to provide a high-efficiency low-vibration low-noise centrifugal fan to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a high efficiency low vibration low noise centrifugal fan, includes the base, the fixed balancing weight that is equipped with in middle part of base inner wall bottom, the bottom fixed connection of bolt and mounting panel is passed through on the top of base, just it is equipped with the damping backing plate to fill up between the top of base and the mounting panel, the middle part fixed mounting on mounting panel top has the motor, one side fixed mounting of motor has the spiral case, the output of motor cup joints with the mounting hole of seting up at the middle part of impeller one side, the air intake fixed mounting of spiral case opposite side has the wind-guiding circle, the air outlet of spiral case passes through the bottom fixed mounting flange's that is equipped with of bolt and hush pipe bottom fixed connection, the fixed surface of the inner wall of hush pipe is equipped with the puigging, the fixed inner wall of hush pipe is equipped with.

As a preferable technical solution of the present invention, the vibration damping shim plate is made of a rubber material.

As a preferable technical scheme of the invention, one side of the air guide ring is fixedly provided with a dust screen.

As a preferable technical scheme of the invention, the top end of the silencing pipe is fixedly provided with a connecting flange.

As a preferable technical solution of the present invention, the soundproof layer is made of soundproof sponge.

As a preferable embodiment of the present invention, the positions of the plurality of vent holes are staggered with each other.

Compared with the prior art, the invention has the beneficial effects that: according to the high-efficiency low-vibration low-noise centrifugal fan, the vibration reduction base plate is arranged between the base and the mounting plate, and the balancing weight is arranged on the base, so that the centrifugal fan generates less vibration during working, the influence of vibration on the fan is avoided, and personnel and property are protected; be equipped with the puigging that the sponge that gives sound insulation made through hush pipe inner wall surface, the hush intraductal acoustic celotex board that is equipped with has seted up the crisscross ventilation hole in position on the acoustic celotex board, makes this centrifugal fan produce littleer noise at the during operation, has protected all ring edge borders, has guaranteed staff's normal work.

Drawings

FIG. 1 is a schematic front view of the present invention;

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

fig. 3 is a schematic view of the internal structure of the soundproof tube of the present invention.

In the figure: 1. a base; 2. a balancing weight; 3. a vibration damping backing plate; 4. mounting a plate; 5. a motor; 6. a volute; 7. a wind guide ring; 8. a dust screen; 9. installing a flange; 10. a sound-deadening tube; 11. a connecting flange; 12. an impeller; 13. a sound insulating layer; 14. a sound insulating board; 15. a vent hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a high efficiency, low vibration and low noise centrifugal fan, which comprises a base 1, wherein a balancing weight 2 is fixedly arranged in the middle of the bottom end of the inner wall of the base 1, the top end of the base 1 is fixedly connected with the bottom end of a mounting plate 4 through a bolt, a vibration damping backing plate 3 is arranged between the top end of the base 1 and the mounting plate 4, a motor 5 is fixedly arranged in the middle of the top end of the mounting plate 4, a volute 6 is fixedly arranged on one side of the motor 5, the output end of the motor 5 is sleeved with a mounting hole formed in the middle of one side of an impeller 12, an air guide ring 7 is fixedly arranged at the air inlet on the other side of the volute 6, an air outlet of the volute 6 is fixedly connected with the bottom end of a mounting flange 9 fixedly arranged at the bottom end of a silencing pipe 10 through a bolt, a sound insulation layer 13 is fixedly arranged on the surface, the vibration damping backing plate 3 is made of rubber materials, and the vibration damping backing plate 3 made of rubber has a good vibration damping effect; a dust screen 8 is fixedly arranged on one side of the air guide ring 7, and the dust screen 8 can prevent dust from accumulating inside the fan, so that the service life of the fan is prolonged; the top end of the silencing pipe 10 is fixedly provided with a connecting flange 11, so that the silencing pipe is convenient for personnel to connect; the sound insulation layer 13 is made of sound insulation sponge, and the sound insulation sponge has a good sound insulation effect and is low in cost; the positions of the plurality of vent holes 15 are staggered with each other, and the vent holes 15 are staggered with each other to provide the soundproof panel 14 with a better soundproof effect.

When the centrifugal fan is used, a damping base plate 3 made of rubber is arranged between a base 1 and a mounting plate 4 in a cushioning mode, a balancing weight 2 is arranged on the base 1, when a motor 5 works, the balancing weight 2 on the base 1 ensures the stability of the gravity center of the motor 5 during operation, the vibration generated by the motor 5 can be effectively reduced, the damping base plate 3 is arranged between the mounting plate 4 connected with the motor 5 and the base 1 and can effectively slow down the vibration, when the fan operates, the motor 5 drives an impeller 12 to rotate, the generated wind enters a silencing pipe 10, a sound insulation layer 13 is arranged in the silencing pipe 10 and can reduce the generated noise, the wind generated by the fan passes through ventilation holes 15 in staggered positions on the sound insulation plate 14, the noise can be reduced, a dustproof net 8 connected with a wind guide ring 7 can prevent dust from accumulating in the fan, and the service life of the fan is prolonged.

In the description of the present invention, it is to be understood that the indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings and are only for convenience in describing the present invention and simplifying the description, but are not intended to indicate or imply that the indicated devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the present invention.

In the present invention, unless otherwise explicitly specified or limited, for example, it may be fixedly attached, detachably attached, or integrated; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.

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. A high-efficiency low-vibration low-noise centrifugal fan comprises a base (1) and is characterized in that a balancing weight (2) is fixedly arranged in the middle of the bottom end of the inner wall of the base (1), the top end of the base (1) is fixedly connected with the bottom end of a mounting plate (4) through a bolt, a vibration damping base plate (3) is arranged between the top end of the base (1) and the mounting plate (4), a motor (5) is fixedly mounted in the middle of the top end of the mounting plate (4), a volute (6) is fixedly mounted on one side of the motor (5), the output end of the motor (5) is sleeved with a mounting hole formed in the middle of one side of an impeller (12), an air guide ring (7) is fixedly mounted at an air inlet on the other side of the volute (6), an air outlet of the volute (6) is fixedly connected with the bottom end of a mounting flange (9) through, the surface mounting of the inner wall of the hush pipe (10) is provided with a sound insulation layer (13), the inner wall of the hush pipe (10) is provided with a plurality of sound insulation boards (14), and a plurality of ventilation holes (15) are formed in one side of each sound insulation board (14).

2. The high efficiency low vibration low noise centrifugal fan of claim 1, wherein: the vibration damping backing plate (3) is made of rubber materials.

3. The high efficiency low vibration low noise centrifugal fan of claim 1, wherein: and a dust screen (8) is fixedly arranged on one side of the air guide ring (7).

4. The high efficiency low vibration low noise centrifugal fan of claim 1, wherein: and a connecting flange (11) is fixedly arranged at the top end of the silencing pipe (10).

5. The high efficiency low vibration low noise centrifugal fan of claim 1, wherein: the sound insulation layer (13) is made of sound insulation sponge.

6. The high efficiency low vibration low noise centrifugal fan of claim 1, wherein: the positions of the plurality of ventilation holes (15) are staggered with each other.