CN218991989U

CN218991989U - Vibration/noise reduction mechanism of centrifugal fan

Info

Publication number: CN218991989U
Application number: CN202223365025.0U
Authority: CN
Inventors: 刘金龙
Original assignee: Henan Shuang Fu Electromechanical Manufacturing Co ltd
Current assignee: Henan Shuang Fu Electromechanical Manufacturing Co ltd
Priority date: 2022-12-15
Filing date: 2022-12-15
Publication date: 2023-05-09
Anticipated expiration: 2032-12-15

Abstract

The utility model discloses a vibration and noise reduction mechanism of a centrifugal fan, which comprises a base and a machine body, wherein clamping grooves are formed in the upper end face of the base and the lower end face of the machine body, soft rubber mats are placed in the clamping grooves, four groups of fixing plates are respectively arranged on the upper soft rubber mat and the lower soft rubber mat, a lower cover plate is arranged on the lower fixing plate, an air bag damper is arranged on the lower cover plate, and the upper end of the air bag damper is connected with an upper cover plate. This centrifugal fan vibration/noise reduction mechanism is through the gasbag bumper shock absorber to fuselage and base to adjust gasbag bumper shock absorber height according to centrifugal fan vibrations condition, so as to satisfy the demand of multiple vibration frequency, and the gasbag bumper shock absorber has the sound insulation function, falls the centrifugal fan in the absorbing, and the device gasbag bumper shock absorber is equipped with the soft cushion respectively in upper and lower side, so as to carry out dual shock attenuation to centrifugal fan, and the device air pump is linked together with the gasbag bumper shock absorber, makes the gasbag bumper shock absorber can maintain long-term work.

Description

Vibration/noise reduction mechanism of centrifugal fan

Technical Field

The utility model relates to the technical field of vibration and noise reduction of centrifugal fans, in particular to a vibration and noise reduction mechanism of a centrifugal fan.

Background

The centrifugal fan is a machine for raising gas pressure and exhausting gas by means of inputted mechanical energy, and is a driven fluid machine, and is widely used for ventilation, dust exhausting and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings. In the use process of the centrifugal fan, vibration generated during the operation of the motor can cause harm to machinery or buildings, noise generated by vibration causes adverse effects on physical and mental health of workers, and then the vibration and noise reduction mechanism is used for vibration reduction and vibration reduction of the centrifugal fan.

The vibration is buffered through the contraction force of the spring when the vibration damping and noise reducing mechanism of the existing centrifugal fan works, but the recovery rate of the spring is lower after the spring is compressed for many times when the existing spring damper works, and the self-vibration condition exists in the spring, so that the vibration damping effect is weaker. For this reason, a vibration/noise reduction mechanism for a centrifugal fan has been proposed to solve the above-mentioned problems.

Disclosure of Invention

The utility model aims to provide a vibration and noise reduction mechanism of a centrifugal fan, which aims to solve the problems that the existing vibration and noise reduction mechanism in the background art is low in recovery rate after springs are compressed for a plurality of times during operation, and the springs have self-vibration and weak vibration reduction effect.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a centrifugal fan vibration/noise reduction mechanism, includes base and fuselage, the block groove has all been seted up to base up end and fuselage lower terminal surface, and has placed the soft rubber pad in the block groove, be equipped with four sets of fixed plates on the soft rubber pad of upper and lower side respectively, and be equipped with the lower apron on the fixed plate of below, be equipped with the gasbag bumper shock absorber on the lower apron, and gasbag bumper shock absorber upper end connection upper cover plate, the fixed plate is connected to the upper cover plate top, and is equipped with the air inlet on the fixed plate, the gasbag bumper shock absorber rear corresponds and is equipped with the air pump, and is equipped with the gas outlet on the air pump, the gas outlet is connected the air supply pipe, and the air inlet is connected to the air supply pipe other end, the air pump below corresponds and is equipped with the fixed plate, and every set of fixed plate all is fixed in on the soft rubber pad through the screw;

the clamping groove is respectively provided with a sliding groove at two sides, a sliding block is movably arranged in the sliding groove, one end of the sliding block is connected with a baffle rod in the sliding groove, and the other end of the sliding block is connected with a baffle outside the sliding groove;

the machine body is provided with a fan shell in the front, a centrifugal fan is arranged in the fan shell, a sound insulation plate is arranged on the periphery of the centrifugal fan, sound absorbing cotton is clamped between the sound insulation plate and the fan shell, a motor is fixedly arranged on the upper end face of the machine body in the rear, one end of an output shaft of the motor is connected with a rotating shaft, and the other end of the rotating shaft is connected with a wind wheel in the fan shell.

Preferably, the sound insulation plate is cylindrical, and the sound absorbing cotton and the fan shell form a clamping structure through the sound insulation plate.

Preferably, the machine body forms a damping structure with the base through the soft rubber pad, the fixing plate, the air bag damper.

Preferably, the air pump and the air bag damper form a communication structure through the air outlet, the air supply pipe and the air inlet.

Preferably, the soft rubber pad and the clamping groove form a clamping structure, and the baffle plate and the soft rubber pad form an up-and-down pushing structure through the sliding block, the sliding chute.

Compared with the prior art, the utility model has the beneficial effects that: this centrifugal fan vibration/noise reduction mechanism is through the gasbag bumper shock absorber to fuselage and base to adjust gasbag bumper shock absorber height according to centrifugal fan vibrations condition, so as to satisfy the demand of multiple vibration frequency, and the gasbag bumper shock absorber has the sound insulation function, falls the centrifugal fan in the absorbing, and the device gasbag bumper shock absorber is equipped with the soft cushion respectively in upper and lower side, so as to carry out dual shock attenuation to centrifugal fan, and the device air pump is linked together with the gasbag bumper shock absorber, makes the gasbag bumper shock absorber can maintain long-term work.

Drawings

FIG. 1 is a schematic diagram of a vibration/noise reduction mechanism of a centrifugal fan;

FIG. 2 is a schematic diagram of a side view structure of a vibration/noise reduction mechanism of a centrifugal fan according to the present utility model;

FIG. 3 is a schematic diagram of a top view of a soft rubber pad assembly of a vibration/noise reduction mechanism of a centrifugal fan;

fig. 4 is a schematic diagram of a vibration reducing component of a vibration and noise reducing mechanism of a centrifugal fan.

In the figure: 1. the air conditioner comprises a base, 2, a machine body, 3, a centrifugal fan, 4, a motor, 5, a rotating shaft, 6, a sound insulation plate, 7, sound absorbing cotton, 8, a fan shell, 9, a clamping groove, 10, a soft rubber pad, 11, a sliding groove, 12, a sliding block, 13, a baffle, 14, an air pump, 15, an air outlet, 16, an air supply pipe, 17, an air inlet, 18, an upper cover plate, 19, a lower cover plate, 20, an air bag shock absorber, 21 and a fixing plate.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, the present utility model provides a technical solution: the damping and noise reducing mechanism of the centrifugal fan comprises a base 1 and a machine body 2, wherein the upper end face of the base 1 and the lower end face of the machine body 2 are provided with clamping grooves 9, soft rubber mats 10 are placed in the clamping grooves 9, four groups of fixing plates 21 are respectively arranged on the soft rubber mats 10 at the upper part and the lower part, a lower cover plate 19 is arranged on the fixing plate 21 at the lower part, an air bag damper 20 is arranged on the lower cover plate 19, and the upper end of the air bag damper 20 is connected with an upper cover plate 18;

further, the machine body 2 forms a damping structure with the base 1 through the soft rubber pad 10, the fixing plate 21, the air bag damper 20, so that vibration frequency generated by the machine body 2 is buffered by the air bag damper 20, vibration received by the base 1 is reduced, damage to machinery and buildings caused by vibration generated by the machine body 2 is reduced, and noise generated by the centrifugal fan 3 in a working process is reduced.

The upper cover plate 18 is connected with the fixing plate 21, the fixing plate 18 is provided with the air inlet 17, the air pump 14 is correspondingly arranged behind the air bag shock absorber 20, the air pump 14 is provided with the air outlet 15, the air outlet 15 is connected with the air supply pipe 16, the other end of the air supply pipe 16 is connected with the air inlet 17, the fixing plate 21 is correspondingly arranged below the air pump 14, and each group of fixing plates 21 are fixed on the soft rubber pad 10 through screws;

further, the air pump 14 forms a communication structure with the air bag damper 20 through the air outlet 15, the air supply pipe 16 and the air inlet 17, and the air pump 14 is used for continuously supplying air to the air bag damper 20, so that the air bag damper 20 can work for a long time, and the working durability of the vibration and noise reduction device is improved.

The two sides of the clamping groove 9 are respectively provided with a sliding groove 11, a sliding block 12 is movably arranged in the sliding groove 11, one end of the sliding block 12 is connected with a baffle rod in the sliding groove 11, and the other end of the sliding block 12 is connected with a baffle 13 outside the sliding groove 11;

further, the soft rubber pad 10 and the clamping groove 9 form a clamping structure, so that the soft rubber pad 10 is supported, the centrifugal fan 3 is subjected to double damping, the damping efficiency of the centrifugal fan is improved, the baffle 13 and the soft rubber pad 10 form an up-down pushing structure through the sliding block 12 and the sliding groove 11, and when the soft rubber pad 10 is excessively worn due to long-term work, the soft rubber pad 10 in the clamping groove 9 is replaced through the sliding baffle 13.

The machine body 2 is provided with a fan shell 8 in the front, a centrifugal fan 3 is arranged in the fan shell 8, a sound insulation plate 6 is arranged on the periphery of the centrifugal fan 3, sound-absorbing cotton 7 is clamped between the sound insulation plate 6 and the fan shell 8, a motor 4 is fixedly arranged on the upper end surface of the machine body 2 in the rear, one end of an output shaft of the motor 4 is connected with a rotating shaft 5, and the other end of the rotating shaft 5 is connected with a wind wheel in the fan shell 8;

further, the acoustic baffle 6 is cylindrical, and the sound absorbing cotton 7 forms a clamping structure with the fan housing 8 through the acoustic baffle 6, so that noise generated by the centrifugal fan 3 is blocked through the acoustic baffle 6, and the sound absorbing cotton 7 further absorbs the noise, so that the noise reduction efficiency of the device is improved.

Working principle: in the vibration/noise reduction mechanism using the centrifugal fan, firstly, the baffle 13 is pushed upwards, meanwhile, the soft rubber pads 10 are respectively placed in the clamping grooves 9, then the baffle 13 is loosened, the baffle 13 moves downwards under the pushing of self gravity, further, the soft rubber pads 10 are limited, then the air cushion damper 20 is fixed between two groups of soft rubber pads 10 through the screws and the fixing plates 21, the air pump 14 is placed near the air cushion damper 20, the air pump 14 is fixed on the soft rubber pads 10 below through the screws and the fixing plates 21, then one end of the air supply pipe 16 is connected to the air outlet 15 through the air supply pipe 16, the other end of the air supply pipe 16 is connected to the air inlet 17 of the air cushion damper 20, the air cushion damper 20 is adjusted to a proper state through the air pump 14 so as to perform vibration reduction work, and the air cushion damper 20 is supplied for a long time through the air pump 14, after the air cushion damper 20 is arranged, the air cushion damper 6 is fixedly arranged on the outer ring of the centrifugal fan 3, the sound absorbing cotton 7 is clamped between the air cushion 6 and the fan shell 8, and then the motor 4 can be started, and the motor 4 drives the wind wheel to work through the rotating shaft 5; if the soft rubber pad 10 is worn seriously due to long-term operation, the air pump 14 and the air bag damper 20 are removed by the screw, the baffle 13 is pushed upward, the worn soft rubber pad 10 is taken out to be replaced, and then the air pump 14 and the air bag damper 20 are fixed on a new soft rubber pad 10 in the same manner so as to continue vibration and noise reduction operation. The damping and noise reducing mechanism of the centrifugal fan is used in the using process.

Although the present utility model has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present utility model.

Claims

1. The utility model provides a centrifugal fan vibration/noise reduction mechanism, includes base (1) and fuselage (2), its characterized in that: the air cushion is characterized in that clamping grooves (9) are formed in the upper end face of the base (1) and the lower end face of the machine body (2), soft rubber mats (10) are placed in the clamping grooves (9), four groups of fixing plates (21) are respectively arranged on the soft rubber mats (10) at the upper side and the lower side, a lower cover plate (19) is arranged on the fixing plates (21) at the lower side, an air bag damper (20) is arranged on the lower cover plate (19), the upper end of the air bag damper (20) is connected with the upper cover plate (18), the fixing plates (21) are connected above the upper cover plate (18), an air inlet (17) is formed in the fixing plates, an air pump (14) is correspondingly arranged behind the air bag damper (20), an air outlet (15) is formed in the air pump (14), the air outlet (15) is connected with an air supply pipe (16), the other end of the air supply pipe (16) is connected with an air inlet (17), the fixing plates (21) are correspondingly arranged below the air pump (14), and each group of fixing plates (21) are fixed on the soft rubber mats (10) through screws; the clamping grooves (9) are respectively provided with a sliding groove (11) at two sides, a sliding block (12) is movably arranged in the sliding grooves (11), one end of the sliding block (12) is connected with a baffle rod in the sliding grooves (11), and the other end of the sliding block (12) is connected with a baffle plate (13) outside the sliding grooves (11); fuselage (2) are equipped with fan housing (8) in the place ahead, and are equipped with centrifugal fan (3) in fan housing (8), centrifugal fan (3) periphery is equipped with acoustic celotex board (6), and the block has between acoustic celotex board (6) and fan housing (8) to inhale sound cotton (7), fuselage (2) up end is equipped with motor (4) in the fixed rear, and output shaft one end connection rotation axis (5) of motor (4), the rotation axis (5) other end is in fan housing (8) internal connection wind wheel.

2. The centrifugal fan vibration/noise reduction mechanism according to claim 1, wherein: the sound insulation plate (6) is cylindrical, and the sound absorption cotton (7) and the fan shell (8) form a clamping structure through the sound insulation plate (6).

3. The centrifugal fan vibration/noise reduction mechanism according to claim 1, wherein: the machine body (2) and the base (1) form a damping structure through the soft rubber pad (10), the fixing plate (21) and the air bag damper (20).

4. The centrifugal fan vibration/noise reduction mechanism according to claim 1, wherein: the air pump (14) and the air bag shock absorber (20) form a communication structure through the air outlet (15), the air supply pipe (16) and the air inlet (17).

5. The centrifugal fan vibration/noise reduction mechanism according to claim 1, wherein: the soft rubber pad (10) and the clamping groove (9) form a clamping structure, and the baffle (13) and the soft rubber pad (10) form an up-down pushing structure through the sliding block (12), the sliding groove (11).