CN210240046U - Anti-vibration centrifugal fan - Google Patents

Abstract

The utility model discloses a centrifugal fan is moved to antidetonation belongs to centrifugal fan technical field, has solved the centrifugal fan among the prior art and has received outside or self vibration influence in the use, thereby leads to the skew problem of seriously disturbing normal work of axial lead easily, the utility model discloses a casing, chassis bottom is connected with the fan base, the outside cover of casing and fan base is equipped with the protection casing, be connected with a plurality of antidetonation devices between protection casing and the casing, the antidetonation device is including installing the mount pad on the protection casing inner wall, the mount pad is connected with the guide cylinder internally mounted has damping spring, damping spring's one end and guide cylinder are connected, and the other end is connected with the movable rod, the movable rod is connected with the blotter, the blotter is installed on the casing. The utility model discloses the antidetonation is effectual, the operation is stable, long service life.

Description

Anti-vibration centrifugal fan

Technical Field

The utility model belongs to the technical field of centrifugal fan, concretely relates to centrifugal fan is moved to antidetonation.

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.

The working principle of the centrifugal fan is as follows: according to the principle of converting kinetic energy into potential energy, an impeller rotating at high speed is used for accelerating gas, then decelerating and changing the flow direction, so that kinetic energy is converted into potential energy (pressure). In a single stage centrifugal fan, the gas enters the impeller from an axial direction, changes to a radial direction as it flows through the impeller, and then enters the diffuser. In diffusers, the gas changes flow direction and the increase in conduit cross-sectional area slows the gas flow, which converts kinetic energy into pressure energy. The pressure increase occurs primarily in the impeller and secondarily in the diffusion process. In a multistage centrifugal fan, a flow reverser is used to direct the air flow to the next impeller, creating a higher pressure.

When the centrifugal fan works, larger noise and vibration are sometimes generated, which is generally because the vibration possibly generated in the rotation process of the motor and the impeller affects the whole axial lead of the centrifugal fan to make the centrifugal fan deviate, and once the problem occurs, the deviation is more serious as the use time is longer, the problems of collision, abnormal friction sound and the like can be generated in the fan body, the temperature of a bearing or a sealing part can be sharply increased in serious conditions, the centrifugal fan can suddenly generate strong vibration or even trip, and the normal work is seriously affected, so the design of shock absorption is very important.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a:

in order to solve the problem that the centrifugal fan in the prior art is influenced by external or self vibration in the using process and easily causes the axial lead to deviate so as to seriously interfere the normal work, the anti-vibration centrifugal fan is provided.

The utility model adopts the technical scheme as follows:

the utility model provides a centrifugal fan is moved to antidetonation, includes the casing, chassis bottom is connected with the fan base, a serial communication port, the outside cover of casing and fan base is equipped with the protection casing, be connected with a plurality of antidetonation devices between protection casing and the casing, the antidetonation device is including installing the mount pad on the protection casing inner wall, the mount pad is connected with the guide cylinder internally mounted has damping spring, damping spring's one end and guide cylinder are connected, and the other end is connected with the movable rod, the movable rod is connected with the blotter, the blotter is installed on the casing.

Further, install the impeller on the casing, the impeller is connected with the motor through the pivot, the motor bottom is connected with the motor platform, and motor platform bottom is connected with motor base, motor base and fan base are split type structure.

Further, install between motor and the casing and separate the fixed plate, separate the inner wall fixed connection of fixed plate and protection casing, separate and install the buffering head on the fixed plate, the buffering head both sides are connected with the vibration isolation spring who is connected with casing and motor platform respectively.

Further, be connected with the air outlet on the casing, install hot blast blowpipe apparatus on the protection casing inner wall, hot blast blowpipe apparatus all communicates with the protection casing inside and outside, installs dust screen and dehumidification cotton net in the hot blast blowpipe apparatus.

Furthermore, the outer side of the casing and the fan base is connected with a reinforcing plate, the reinforcing plate is a trapezoidal rib plate, and a vacuum sound insulation layer is arranged in the protective cover.

The working principle of the utility model is as follows:

the utility model is provided with a protective cover and an anti-vibration device, when the centrifugal fan works, the vibration of the fan can be absorbed by the damping devices in multiple directions, specifically, when the impeller in the rotation of the fan vibrates, the vibration is transmitted to the movable rod on the buffer cushion through the casing, so that the movable rod displaces, and one part of the movable rod is pre-installed and extends into the guide cylinder, so that the movable rod moves in the guide cylinder to compress the damping spring, and the damping spring absorbs the part of kinetic energy to slow down the vibration amplitude of the vibration and achieve the damping effect; the utility model discloses creatively place motor and centrifugal fan on two detached bases, because the relative centrifugal fan of vibrations of motor is more violent, consequently design it for split type can separate partly vibrations, set up the separation fixed plate simultaneously, further separate the vibrations of motor to utilize vibration isolation spring to absorb simultaneously the vibrations of both sides, make the operation more steady.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. the utility model discloses a connect a plurality of antidetonation devices at radial each position of centrifugal fan casing, reduced the range of most vibrations, effectively weakened the influence of vibrations for centrifugal fan can rotate steadily in service, avoids producing the damage, and this structural stability is strong, can use for a long time, and centrifugal fan's life is showing the extension.

2. The utility model discloses a motor base and fan base are split type, can separate the whole vibrations of motor, prevent to shake and transmit to centrifugal fan, produce more violent vibrations after stacking mutually, have effectively avoided the bearing part to have the condition of wearing and tearing and high temperature easily.

3. The utility model discloses a vibration isolation spring can carry out the vibration isolation respectively to the centrifugal fan and the motor of both sides, makes it can not influence each other, also provides axial shock attenuation effect for centrifugal fan simultaneously, has further promoted the antidetonation function.

4. The utility model discloses an air inlet device admits air to set up dust filtration net and dehumidification cotton net, can prevent in the air that moisture and sand blown by the wind from eroding parts such as impeller for a long time, the condition such as corrosion appears, is defective, is showing to have promoted and has used experience.

5. The utility model discloses a reinforcing plate has promoted centrifugal fan's bulk strength, for the stability of fan provides effective support, and the noise that centrifugal fan produced can be completely cut off to the vacuum puigging in the protection casing, improves human operational environment.

Drawings

The invention will now be described, by way of example, with reference to the accompanying drawings, in which:

fig. 1 is a front view of the present invention;

FIG. 2 is a side view of FIG. 1;

fig. 3 is a structural view of the shock absorber of fig. 1.

Description of reference numerals:

1-air outlet, 2-machine shell, 3-impeller, 4-protective cover, 5-anti-vibration device, 51-buffer pad, 52-movable rod, 53-guide cylinder, 54-damping spring, 55-mounting seat, 6-reinforcing plate, 7-fan base, 8-separation fixing plate, 9-air inlet device, 10-rotating shaft, 11-motor, 12-motor platform, 13-motor base, 14-buffer head and 15-vibration isolation spring.

Detailed Description

All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.

The present invention will be described in detail with reference to fig. 1 to 3.

Example 1

The embodiment as a basis:

the utility model provides an anti-vibration centrifugal fan, which comprises a housing 2, 2 bottoms of casing are connected with fan base 7, a serial communication port, casing 2 and fan base 7's outside cover is equipped with protection casing 4, be connected with a plurality of antidetonation device 5 between protection casing 4 and the casing 2, antidetonation device 5 is including installing mount pad 55 on 4 inner walls of protection casing, mount pad 55 is connected with guide cylinder 53 and guides 53 internally mounted and has damping spring 54, damping spring 54's one end and guide cylinder 53 are connected, the other end is connected with movable rod 52, movable rod 52 is connected with blotter 51, blotter 51 is installed on casing 2.

The utility model discloses a connect a plurality of antidetonation devices 5 at radial each position of centrifugal fan casing 2, reduced the range of most vibrations, effectively weakened the influence of vibrations for centrifugal fan can rotate steadily in service, avoids producing the damage, and this structural stability is strong, can use for a long time, and centrifugal fan's life is showing the extension.

Example 2

This embodiment focuses on the improvement compared with the above-mentioned embodiment, and the same parts are not repeated, and in this embodiment, install impeller 3 on casing 2, impeller 3 is connected with motor 11 through pivot 10, and motor 11 bottom is connected with motor platform 12, and motor platform 12 bottom is connected with motor base 13, and motor base 13 is split type structure with fan base 7.

Further, a separation fixing plate 8 is installed between the motor 11 and the casing 2, the separation fixing plate 8 is fixedly connected with the inner wall of the protective cover 4, a buffer head 14 is installed on the separation fixing plate 8, and two sides of the buffer head 14 are connected with vibration isolation springs 15 respectively connected with the casing 2 and the motor platform 12.

The utility model discloses a motor base 13 and fan base 7 are split type, can separate the whole vibrations of motor 11, prevent to shake and transmit to centrifugal fan, produce more violent vibrations after stacking mutually, have effectively avoided the bearing part to have the condition of wearing and tearing and high temperature easily. The vibration isolation spring 15 can isolate vibration to the centrifugal fan and the motor 11 on two sides respectively, so that the centrifugal fan and the motor cannot influence each other, and meanwhile, an axial damping effect is provided for the centrifugal fan, and the anti-vibration function is further improved.

Example 3

This embodiment emphatically explains the improvement part that compares with above-mentioned embodiment, and the same part is no longer repeated, in this embodiment, is connected with air outlet 1 on the casing 2, installs hot blast blowpipe apparatus 9 on the protection casing 4 inner wall, and hot blast blowpipe apparatus 9 all communicates with the inside and outside of protection casing 4, installs dust screen and dehumidification cotton net in the hot blast blowpipe apparatus 9.

The utility model discloses an air inlet unit 9 admits air to set up dust filtration net and dehumidification cotton net, can prevent in the air that moisture and sand blown by the wind from to parts such as impeller 3 corrode for a long time, the condition such as corrosion appears, is defective, is showing to have promoted and has used experience.

Example 4

In this embodiment, the main body 2 and the outer side of the fan base 7 are connected to a reinforcing plate 6, the reinforcing plate 6 is a trapezoidal rib, and a vacuum sound insulation layer is disposed in the protective cover 4. The utility model discloses a reinforcing plate 6 has promoted centrifugal fan's bulk strength, for the stability of fan provides effective support, and the noise that centrifugal fan produced can be completely cut off to the vacuum puigging in the protection casing 4, improves human operational environment.

Claims (5)

1. The utility model provides an anti-vibration centrifugal fan, includes casing (2), casing (2) bottom is connected with fan base (7), its characterized in that, the outside cover of casing (2) and fan base (7) is equipped with protection casing (4), be connected with a plurality of antidetonation device (5) between protection casing (4) and casing (2), antidetonation device (5) are including installing mount pad (55) on protection casing (4) inner wall, mount pad (55) are connected with guide cylinder (53) internally mounted has damping spring (54), the one end and the guide cylinder (53) of damping spring (54) are connected, and the other end is connected with movable rod (52), movable rod (52) are connected with blotter (51), blotter (51) are installed on casing (2).

2. An anti-vibration centrifugal fan according to claim 1, wherein the casing (2) is provided with the impeller (3), the impeller (3) is connected with the motor (11) through the rotating shaft (10), the bottom of the motor (11) is connected with the motor platform (12), the bottom of the motor platform (12) is connected with the motor base (13), and the motor base (13) and the fan base (7) are of a split structure.

3. An anti-vibration centrifugal fan according to claim 2, wherein a separation fixing plate (8) is installed between the motor (11) and the casing (2), the separation fixing plate (8) is fixedly connected with the inner wall of the protective cover (4), a buffer head (14) is installed on the separation fixing plate (8), and vibration isolation springs (15) respectively connected with the casing (2) and the motor platform (12) are connected to two sides of the buffer head (14).

4. An anti-vibration centrifugal fan according to claim 1, wherein the casing (2) is connected with an air outlet (1), the inner wall of the protective cover (4) is provided with an air inlet device (9), the air inlet device (9) is communicated with the inner part and the outer part of the protective cover (4), and the air inlet device (9) is internally provided with a dust filtering net and a dehumidifying cotton net.

5. An anti-vibration centrifugal fan according to claim 1, wherein a reinforcing plate (6) is connected to the outer side of the casing (2) and the fan base (7), the reinforcing plate (6) is a trapezoidal rib plate, and a vacuum sound insulation layer is arranged in the protective cover (4).

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