CN211525202U

CN211525202U - Low-noise centrifugal ventilator

Info

Publication number: CN211525202U
Application number: CN201922200463.3U
Authority: CN
Inventors: 刘卫青; 黄亮
Original assignee: Yancheng Maoda Machinery Manufacturing Co ltd
Current assignee: Yancheng Maoda Machinery Manufacturing Co ltd
Priority date: 2019-12-10
Filing date: 2019-12-10
Publication date: 2020-09-18
Anticipated expiration: 2029-12-10

Abstract

The utility model discloses a low noise centrifugal fan, including base and shock attenuation board, the shock attenuation board is established in the base top, be provided with multiunit evenly distributed's flexible post, every on lateral wall and the base under the shock attenuation board on the lateral wall all the cover is equipped with first spring on the flexible post, first spring is located between the lateral wall on shock attenuation board lower lateral wall and the base, the fixed mounting panel that is provided with of lateral wall on the shock attenuation board, lateral wall one end is provided with the motor support on the mounting panel, be equipped with the driving motor who matches on the motor support, the one end that the motor support was kept away from to the lateral wall on the mounting panel is provided with the ventilation blower body, driving motor output shaft and ventilation blower body center pin fixed connection. The utility model discloses shock attenuation buffer's setting can effectually decompose the trend of vibrations about mounting panel and shock attenuation board, offsets the range of vibrations about the shock attenuation board gradually, avoids the ventilation blower during operation to take place resonance, produces great noise.

Description

Low-noise centrifugal ventilator

Technical Field

The utility model relates to a ventilation blower technical field especially relates to a low noise 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, vehicles, ships and buildings; ventilation and draught of boilers and industrial kilns and cooling and ventilation in domestic electrical appliances; drying and selecting grains; wind tunnel wind source and air cushion boat inflation and propulsion.

In fact, centrifugal fan can produce vibration to a certain extent at the in-process of work, takes place resonance with base and mounting panel even to produce the noise, current centrifugal fan often sets up vibration damping shim or shock attenuation post on the base and carries out vibration/noise reduction, however, the shock attenuation effect is not ideal, leads to, centrifugal fan still can produce not little noise when work.

Disclosure of Invention

The utility model aims at solving the defect that the shock attenuation effect is not good among the prior art, the during operation still can produce the noise to a low noise centrifugal fan is proposed.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a low-noise centrifugal ventilator comprises a base and a damping plate, wherein the damping plate is arranged above the base, a plurality of groups of uniformly distributed telescopic columns are arranged between the lower side wall of the damping plate and the upper side wall of the base, each telescopic column is sleeved with a first spring, the first springs are positioned between the lower side wall of the damping plate and the upper side wall of the base, a mounting plate is fixedly arranged on the upper side wall of the damping plate, a motor support is arranged at one end of the upper side wall of the mounting plate, a matched driving motor is arranged on the motor support, a ventilator body is arranged at one end, away from the motor support, of the upper side wall of the mounting plate, an output shaft of the driving motor is fixedly connected with a central shaft of the ventilator body, a plurality of groups of uniformly distributed impellers are fixedly arranged around the central shaft of the ventilator body, an air inlet is, and a plurality of groups of damping and buffering devices which are uniformly distributed are arranged between the lower side wall of the damping plate and the upper side wall of the base.

Preferably, every buffering damping device all includes two fixed plates and slide bar, two the fixed plate is fixed to be set up lateral wall on the base, and the slide bar transversely sets up between two fixed plates, the cover is equipped with the second spring on the slide bar, second spring both ends difference fixedly connected with sliding sleeve, the sliding sleeve cup joints with the slide bar slip, the lateral wall is provided with the fixed ear that matches with the sliding sleeve under the shock attenuation board, every all through hinge bar hinged joint between fixed ear and the lateral wall on the sliding sleeve.

Preferably, each of the first spring and the second spring is made of manganese steel material with good extrusion capacity and wear resistance.

Preferably, the periphery of the base is rounded, and the four corners of the base are wrapped by a layer of soft sponge.

Preferably, a plurality of groups of touch-proof grids which are uniformly distributed are arranged in the air inlet.

The utility model has the advantages that: the vibration transmission that ventilation blower body and driving motor during operation produced gives mounting panel and shock attenuation board, and shock attenuation buffer's setting can effectually decompose the trend of vibrations about mounting panel and shock attenuation board, the effect transmission through the hinge bar gives the second spring, arouse the horizontal compression of second spring or tensile, the shock attenuation effect is better, can effectively avoid the ventilation blower body to take place resonance, play the noise reduction effect, the first spring of cover on flexible post is in the same place with shock attenuation buffer in addition, the noise reduction effect is better.

Drawings

Fig. 1 is a schematic structural view of a low-noise centrifugal ventilator provided by the present invention;

FIG. 2 is an enlarged view taken at A in FIG. 1;

fig. 3 is the utility model provides a low noise centrifugal fan's ventilation blower front structure sketch map.

In the figure: the fan comprises a base 1, a damping plate 2, a first spring 3, a telescopic column 4, a mounting plate 5, a motor support 6, a driving motor 7, a fan body 8, an air inlet 9, an air outlet pipe 10, a sliding rod 11, a sliding sleeve 12, a second spring 13, a fixing lug 14, a hinge rod 15 and an impeller 16.

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.

Referring to fig. 1-3, a low-noise centrifugal ventilator comprises a base 1 and a damping plate 2, wherein the damping plate 2 is arranged above the base 1, the periphery of the base 1 is rounded off, and four corners of the base 1 are wrapped with a layer of soft sponge with soft texture, so that the situation that workers touch edges and corners of the base 1 carelessly during work and do not suffer from physical damage is avoided, and the potential safety hazard of the utility model is reduced to a certain extent, a plurality of groups of uniformly distributed telescopic columns 4 are arranged between the lower side wall of the damping plate 2 and the upper side wall of the base 1, each telescopic column 4 is sleeved with a first spring 3, the first spring 3 is arranged between the lower side wall of the damping plate 2 and the upper side wall of the base 1, each first spring 3 and each second spring 13 are made of manganese steel materials with good extrusion capacity and wear resistance, the manganese steel has high cost performance, and after the first spring 3 and the second spring 13 made of manganese steel are used for a period of time, still has better elasticity and has good damping effect, thereby effectively avoiding the resonance of the ventilator body 8 with the base 1 and the mounting plate 5, having better noise reduction effect, the side wall of the damping plate 2 is fixedly provided with the mounting plate 5, one end of the side wall of the mounting plate 5 is provided with the motor support 6, the motor support 6 is provided with the matched driving motor 7, one end of the side wall of the mounting plate 5 far away from the motor support 6 is provided with the ventilator body 8, the output shaft of the driving motor 7 is fixedly connected with the central shaft of the ventilator body 8, the periphery of the central shaft of the ventilator body 8 is fixedly provided with a plurality of groups of uniformly distributed impellers 16, one side of the ventilator body 8 far away from the driving motor 7 is provided with the air inlet 9, the air inlet 9 is internally provided with a plurality of groups of uniformly distributed anti-touch grids, and the anti-touch, the potential safety hazard of the utility model is further reduced, and an air outlet pipe 10 is arranged at one side of the ventilator;

a plurality of groups of damping and buffering devices which are uniformly distributed are arranged between the lower side wall of the damping plate 2 and the upper side wall of the base 1, each damping and buffering device comprises two fixing plates and a sliding rod 11, the two fixing plates are fixedly arranged on the upper side wall of the base 1, the sliding rod 11 is transversely arranged between the two fixing plates, a second spring 13 is sleeved on the sliding rod 11, two ends of the second spring 13 are respectively and fixedly connected with a sliding sleeve 12, the sliding sleeve 12 is in sliding sleeve connection with the sliding rod 11, a fixing lug 14 matched with the sliding sleeve 12 is arranged on the lower side wall of the damping plate 2, each fixing lug 14 is in hinged connection with the upper side wall of the sliding sleeve 12 through a hinged rod 15, vibration generated when the ventilator body 8 and the driving motor 7 work is transmitted to the mounting plate 5 and the damping plate 2, the damping and buffering devices are arranged to effectively decompose the trend of vertical vibration of the mounting plate 5 and the damping, arouse the horizontal compression of second spring 13 or tensile, the shock attenuation effect is better, can effectively avoid ventilation blower body 8 to take place resonance, plays noise reduction effect.

The utility model discloses in, start driving motor 7, thereby driving motor 7 output shaft drives 8 center pins of ventilation blower body and drives impeller 16's rotation, ventilation blower body 8 can produce the vibration at the in-process of work and transmit for damping plate 2 through mounting panel 5, damping plate 2 has the trend of up-and-down motion, fixed ear 14 that sets up lateral wall under damping plate 2 can drive sliding sleeve 12 reciprocating motion on slide bar 11 following the in-process that damping plate 2 reciprocated, and set up second spring 13 between two sliding sleeves 12 and consequently constantly stretched, compress, thereby offset the range of vibrations from top to bottom of damping plate 2 gradually, the first spring 3 of establishing on flexible post 4 is in the same place with the cooperation of shock attenuation buffer in addition cover, the effect of making an uproar is better.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A low-noise centrifugal fan comprises a base (1) and a damping plate (2), wherein the damping plate (2) is arranged above the base (1), and is characterized in that a plurality of groups of uniformly distributed telescopic columns (4) are arranged between the lower side wall of the damping plate (2) and the upper side wall of the base (1), each telescopic column (4) is sleeved with a first spring (3), each first spring (3) is positioned between the lower side wall of the damping plate (2) and the upper side wall of the base (1), a mounting plate (5) is fixedly arranged on the upper side wall of the damping plate (2), one end of the upper side wall of the mounting plate (5) is provided with a motor support (6), a matched driving motor (7) is arranged on the motor support (6), one end, far away from the motor support (6), of the mounting plate (5) is provided with a fan body (8), an output shaft of the driving motor (7) is fixedly connected with a central shaft of the fan body (, the utility model discloses a damping device of ventilator, including ventilator body (8), fan body (8), damping plate (2), the fixed impeller (16) that are provided with multiunit evenly distributed all around of center pin, and one side that driving motor (7) were kept away from in ventilator body (8) is equipped with air intake (9), ventilator one side still is equipped with out tuber pipe (10), be equipped with multiunit evenly distributed's damping buffer between lateral wall and the lateral wall on base (1) under the damping plate (2).

2. A low-noise centrifugal ventilator according to claim 1, wherein each damping and buffering device comprises two fixing plates and a sliding rod (11), the two fixing plates are fixedly arranged on the upper side wall of the base (1), the sliding rod (11) is transversely arranged between the two fixing plates, a second spring (13) is sleeved on the sliding rod (11), two ends of the second spring (13) are respectively and fixedly connected with a sliding sleeve (12), the sliding sleeve (12) is slidably sleeved with the sliding rod (11), the lower side wall of the damping plate (2) is provided with a fixing lug (14) matched with the sliding sleeve (12), and each fixing lug (14) is hinged with the upper side wall of the sliding sleeve (12) through a hinge rod (15).

3. A low noise centrifugal fan according to claim 1, wherein the base (1) is rounded and the four corners of the base (1) are wrapped with a soft sponge.

4. A low noise centrifugal fan according to claim 1, wherein multiple sets of evenly distributed anti-touch grilles are arranged in the air inlet (9).