CN211422973U

CN211422973U - High-efficiency low-vibration low-noise centrifugal fan

Info

Publication number: CN211422973U
Application number: CN201922284583.6U
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: 2020-09-04
Anticipated expiration: 2029-12-18

Abstract

The utility model 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 damping backing plate is arranged between the top end of the base and the mounting plate, 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 utility model relates to a centrifugal fan, in particular to 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

An object of the utility model is to provide a high efficiency low vibration low noise 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: 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 an optimized technical scheme of the utility model, the damping backing plate is made by rubber materials.

As an optimal technical scheme of the utility model, one side fixed mounting of wind-guiding circle has the dust screen.

As an optimized technical scheme of the utility model, the fixed flange that is equipped with in top of hush pipe.

As an optimized technical scheme of the utility model, the puigging is made by the sponge that gives sound insulation.

As an optimized technical scheme of the utility model, it is a plurality of the position in ventilation hole is crisscross each other.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model relates to a high-efficiency low-vibration low-noise centrifugal fan, which is characterized in that a vibration-damping backing plate is arranged between a base and a mounting plate, and a balancing weight is arranged on the base, so that the vibration generated during the operation of the centrifugal fan is smaller, the influence of the vibration on the fan is avoided, and the properties of personnel 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 structural 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 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. 1-3, the utility model provides a high-efficiency low-vibration low-noise centrifugal fan, which comprises a base 1, wherein a balancing weight 2 is fixedly arranged at the middle part 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 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 at the middle part of the top end of the mounting plate 4, a volute 6 is fixedly arranged at one side of the motor 5, the output end of the motor 5 is sleeved with a mounting hole arranged at the middle part of one side of an impeller 12, an air guide ring 7 is fixedly arranged at the air inlet at 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 a bolt, a sound insulation layer 13 is fixedly arranged on the surface of the inner wall of the sound insulation pipe, 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 in specific use, the utility model relates to a high-efficiency low-vibration low-noise centrifugal fan, a damping backing plate 3 made of rubber is arranged between a base 1 and a mounting plate 4, a balancing weight 2 is arranged on the base 1, when the motor 5 works, the balancing weight 2 on the base 1 ensures the stability of the gravity center when the motor 5 runs, can effectively reduce the vibration generated by the motor 5, the vibration damping backing plate 3 is arranged between the mounting plate 4 connected with the motor 5 and the base 1, can effectively slow down the vibration, when the fan runs, the motor 5 drives the impeller 12 to rotate, the generated wind enters the silencing pipe 10, the silencing pipe 10 is internally provided with the sound insulation layer 13, the noise generated can be reduced, the wind generated by the fan passes through the ventilation holes 15 with staggered positions on the baffle plate 14, the noise can be reduced, wherein the dust screen 8 that the wind-guiding circle 7 is connected can prevent to accumulate the dust in the fan, prolongs the life of fan.

In the description of the present invention, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

In the present invention, unless otherwise explicitly specified or limited, for example, it may be fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above 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.