CN212106385U - A high-strength noise-reducing centrifugal fan - Google Patents

Abstract

The utility model discloses a high-strength noise-reducing centrifugal fan, which comprises an outer casing, a shock absorbing mechanism and a muffler mechanism. A mounting ring is arranged on the inner side wall of the outer casing, and a motor is arranged on the lower end surface inside the mounting ring. , the output end of the motor is provided with a transmission shaft, the transmission shaft is provided with a fan blade, the damping mechanism is provided on the outer casing, and the damping mechanism is composed of an annular liquid storage tank, several arc-shaped plates, The buffer solution, the fixed column, a plurality of transmission rods, springs and a plurality of buffer plates are formed. The outer casing is provided with an annular liquid storage tank on the outer side of the installation ring, and the inner of the annular liquid storage tank is slidably connected with several arcs. The utility model has the advantages of simple structure and reasonable design, which can effectively reduce the vibration force generated when the motor is working, has higher reliability, increases the stability of the centrifugal fan when it is working, and divides the gas at the same time, reducing the time when the gas is circulating. The collision, the noise reduction effect is better.

Description

A high-strength noise-reducing centrifugal fan

technical field

The utility model belongs to the technical field of centrifugal fan equipment, in particular to a high-strength noise-reducing centrifugal fan

Background technique

Centrifugal fan is a machine that relies on input mechanical energy to increase gas pressure and discharge gas. It is a driven fluid machine. Centrifugal fans are widely used in factories, mines, tunnels, cooling towers, vehicles, ships and buildings. Ventilation, Dust extraction and cooling; ventilation and drafting of boilers and industrial furnaces; cooling and ventilation in air-conditioning equipment and household appliances; drying and selection of grain; There are still various problems with centrifugal fans.

For example, the high-strength noise-reducing centrifugal fan disclosed by the authorized announcement number CN 210068586 U can improve the diversion effect of the centrifugal fan, make the flow field of the centrifugal fan longer, the flow field is more uniform, and improve the performance of the centrifugal fan. Heat exchange efficiency, but the vibration damping is mainly aimed at the vibration of the fan blades, and the vibration source is mainly generated by the operation of the motor, resulting in poor damping effect.

Utility model content

The purpose of the present invention is to provide a high-strength noise-reducing centrifugal fan to solve the problems raised in the above-mentioned background art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: a high-strength noise reduction centrifugal fan, comprising an outer casing, a shock absorbing mechanism and a noise reduction mechanism, and a mounting ring is provided on the inner side wall of the outer casing, and the mounting ring A motor is arranged on the lower end face of the interior, a transmission shaft is arranged at the output end of the motor, a fan blade is arranged on the transmission shaft, and the damping mechanism is arranged on the outer casing, and the damping mechanism is formed by a ring-shaped liquid storage. It is composed of a box, a number of arc-shaped plates, a buffer, a fixed column, a number of transmission rods, a spring and a number of buffer plates. The outer casing is provided with an annular liquid storage tank on the outside of the mounting ring. The annular liquid storage tank A number of arc-shaped plates are slidably connected to the inside of the ring-shaped liquid storage tank. The upper and lower ends of the arc-shaped plates are provided with buffer solution inside the annular liquid storage tank. Both sides of the fixed column are provided with transmission rods, the inner side wall of the annular liquid storage tank is provided with a number of springs, the other end of the spring is provided with a buffer plate, and the side surface of one side of the outer casing is provided with openings. There is an air guide pipe, and the muffler mechanism is arranged inside the air guide pipe.

Preferably, the muffler mechanism is composed of a plurality of isolation plates, a guide plate, a plurality of guide holes, a plurality of mufflers, a fixing plate and a plurality of exhaust holes, and the lower end of the air duct is provided with a plurality of isolation plates The upper end of the isolation plate is provided with a baffle plate, the baffle plate is arranged on the inner side wall of the air duct, the baffle plate is provided with a number of guide holes, and the upper part of the baffle plate is provided with a guide plate. A plurality of muffler plates are arranged on the end face, a fixing plate is arranged on the upper end face of the muffler plate, and a plurality of exhaust holes are arranged on the fixing plate.

Preferably, a mounting frame is provided on the outer casing, and a first dustproof net is provided on the mounting frame.

Preferably, the outer casing is provided with a conical air guide plate on the outer side of the fan blade, and the inner side wall of the outer casing and the air duct is provided with noise-absorbing cotton.

Preferably, a limit ring is movably arranged on the transmission shaft, a plurality of support rods are arranged on the outer side of the limit ring, and the other end of the support rod is arranged on the outer casing.

Preferably, the adjacent sides of the transmission rod and the buffer plate are both provided as chamfered surfaces.

Preferably, a reinforcing rod is provided on the outer surface of one side of the air duct, and the other end of the reinforcing rod is provided on the outer casing.

Preferably, the upper end inside the air duct is provided with a second dust filter.

Compared with the prior art, the beneficial effects of the present utility model are:

(1) The utility model is arranged on the outer casing by being provided with a damping mechanism, and the damping mechanism consists of an annular liquid storage tank, several arc-shaped plates, buffer liquid, fixed column, several transmission rods, springs and several buffer plates Through the function of the damping mechanism, the vibration force generated by the motor can be effectively reduced, the reliability is higher, and the stability of the centrifugal fan during operation can be increased;

(2) The utility model is provided with a muffler mechanism, the muffler mechanism is arranged inside the air duct, and the muffler mechanism consists of a number of isolation plates, a guide plate, a number of guide holes, a number of silencers, a fixed plate and a number of It is composed of exhaust holes, and through the function of the muffler mechanism, the gas is divided to reduce the collision when the gas flows, and the muffler effect is better.

Description of drawings

Fig. 1 is the overall front view of the utility model;

Fig. 2 is the overall internal structure schematic diagram of the utility model;

3 is a schematic diagram of the internal arrangement structure of the air duct of the present invention;

4 is a schematic diagram of the installation of the damping mechanism of the present invention;

FIG. 5 is an enlarged schematic view of the position A in FIG. 4 of the present invention.

In the figure: 1. Outer shell; 101. Installation frame; 102. First dust net; 103. Conical wind deflector; 104. Muffler cotton; 2. Damping mechanism; 21. Shaped liquid storage tank; shape plate; 23, buffer solution; 24, fixed column; 25, transmission rod; 26, spring; 27, buffer plate; 3, muffler mechanism; 31, isolation plate; 32, guide plate; 33, guide hole; 34 , muffler plate; 35, fixed plate; 36, exhaust hole; 4, installation ring; 5, motor; 6, drive shaft; 61, limit ring; 62, support rod; 7, fan blade; 8, air duct ; 81. Reinforcing rod; 82. The second dust filter.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

Please refer to FIG. 1 to FIG. 5 , the present utility model provides a technical solution for a high-strength noise-reducing centrifugal fan: a high-strength noise-reducing centrifugal fan includes an outer casing 1 , a shock absorbing mechanism 2 and a noise reduction mechanism 3 . A mounting ring 4 is welded on the inner side wall, a motor 5 is mounted on the lower end surface of the mounting ring 4 through bolts, a drive shaft 6 is mounted on the output end of the motor 5, a fan blade 7 is mounted on the drive shaft 6, and the damping mechanism 2 is mounted On the outer casing 1, the damping mechanism 2 is composed of an annular liquid storage tank 21, several arc-shaped plates 22, buffer liquid 23, fixed columns 24, several transmission rods 25, springs 26 and several buffer plates 27. The outer casing 1 is welded with an annular liquid storage tank 21 on the outside of the mounting ring 4, and a number of arc-shaped plates 22 are slidably connected to the inside of the annular liquid storage tank 21. Buffer 23, a fixed column 24 is welded on the side of the arc-shaped plate 22 away from the motor 5, and a transmission rod 25 is welded on both sides of the fixed column 24. Several springs 26 are installed on the inner wall of the annular liquid storage tank 21. , the other end of the spring 26 is installed with a buffer plate 27 , the side surface of the outer casing 1 is welded with an air duct 8 through an opening, and the muffler mechanism 3 is installed inside the air duct 8 .

In this embodiment, preferably, the muffler mechanism 3 is composed of a plurality of isolation plates 31, a guide plate 32, a plurality of guide holes 33, a plurality of muffler plates 34, a fixed plate 35 and a plurality of exhaust holes 36. The lower end of the pipe 8 is welded with a number of isolation plates 31, the upper end of the isolation plate 31 is welded with a guide plate 32, the guide plate 32 is welded on the inner side wall of the air guide pipe 8, and the guide plate 32 is provided with a number of guide plates. Hole 33, a number of muffler plates 34 are welded on the upper end surface of the deflector 32, a fixed plate 35 is welded on the upper end surface of the muffler plate 34, and a number of exhaust holes 36 are opened on the fixed plate 35.

In this embodiment, preferably, an installation frame 101 is welded on the outer casing 1 , and a first dustproof net 102 is installed on the installation frame 101 , which is beneficial to prevent dust from entering the interior of the outer casing 1 .

In this embodiment, preferably, the outer casing 1 is welded with a conical air deflector 103 on the outer side of the fan blade 7, and the outer casing 1 and the inner side wall of the air duct 8 are equipped with sound-absorbing cotton 104, which is beneficial to the fan blade. 7 Better guide airflow.

In this embodiment, preferably, a limit ring 61 is installed on the transmission shaft 6 through a bearing, a plurality of support rods 62 are welded on the outer side of the limit ring 61, and the other end of the support rod 62 is welded on the outer casing 1, and there are It is beneficial to increase the stability of the transmission shaft 6 .

In this embodiment, preferably, the adjacent side of the transmission rod 25 and the buffer plate 27 is cut into a chamfered surface, which is conducive to better transmission between the transmission rod 25 and the buffer plate 27 .

In this embodiment, preferably, a reinforcing rod 81 is welded on the outer surface of one side of the air duct 8 , and the other end of the reinforcing rod 81 is welded on the outer casing 1 , which is beneficial to increase the distance between the outer casing 1 and the air duct 8 stability.

In this embodiment, preferably, a second dust filter 82 is installed on the upper end of the air duct 8 , which is beneficial to further prevent dust from entering the interior of the outer casing 1 .

The working principle and use process of the utility model: in this device, when the motor 5 works to generate a vibration force, the arc plate 22 can slide downward through the transmission of the buffer liquid 23, and when the arc plate 22 moves downward, The transmission rod 25 squeezes the buffer plate 27, realizes the up and down sliding of the arc plate 22, consumes the up and down jitter force generated by the operation of the motor 5, and at the same time passes through the isolation plate 31, the guide plate 32, and the guide of several guide holes 33. And a number of mufflers 34 function to reduce the collision when the airflow is flowing rapidly, the device can effectively reduce the vibration force generated by the motor 5 when it is working, has higher reliability, and increases the stability of the centrifugal fan when it is working.

Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes and modifications can be made to these embodiments without departing from the principles and spirit of the present invention , alternatives and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (8)

1. A high-strength noise-reducing centrifugal fan, comprising an outer casing (1), a damping mechanism (2) and a muffler mechanism (3), characterized in that: a mounting ring is provided on the inner side wall of the outer casing (1) (4), a motor (5) is arranged on the lower end surface inside the mounting ring (4), a transmission shaft (6) is arranged at the output end of the motor (5), and a transmission shaft (6) is arranged on the transmission shaft (6). The fan blade (7), the damping mechanism (2) is arranged on the outer casing (1), and the damping mechanism (2) is composed of an annular liquid storage tank (21), a plurality of arc-shaped plates (22), a buffer Liquid (23), fixed column (24), several transmission rods (25), springs (26) and several buffer plates (27), the outer casing (1) is provided on the outside of the mounting ring (4) There is an annular liquid storage tank (21), and a plurality of arc-shaped plates (22) are slidably connected to the inside of the annular liquid storage tank (21). Both the upper and lower ends are provided with a buffer solution (23), a side surface of the curved plate (22) away from the motor (5) is provided with a fixing column (24), and both sides of the fixing column (24) are provided with A transmission rod (25), a plurality of springs (26) are arranged on the inner side wall of the annular liquid storage tank (21), a buffer plate (27) is arranged at the other end of the springs (26), and the outer casing ( 1) A side surface of one side is provided with an air guide pipe (8) by opening an opening, and the muffler mechanism (3) is arranged inside the air guide pipe (8). 2. A high-strength noise-reducing centrifugal fan according to claim 1, characterized in that: the muffler mechanism (3) consists of a plurality of isolation plates (31), a guide plate (32), and a plurality of guide holes (33), a plurality of muffler plates (34), a fixed plate (35) and a plurality of exhaust holes (36), the lower end of the air duct (8) is provided with a plurality of isolation plates (31), the The upper end of the isolation plate (31) is provided with a guide plate (32), the guide plate (32) is arranged on the inner side wall of the air guide pipe (8), and a number of A guide hole (33), a plurality of muffler plates (34) are arranged on the upper end surface of the baffle plate (32), a fixing plate (35) is arranged on the upper end surface of the muffler plate (34), and the Several exhaust holes (36) are arranged on the fixing plate (35). 3. A high-strength noise-reducing centrifugal fan according to claim 1, wherein a mounting frame (101) is provided on the outer casing (1), and a first mounting frame (101) is provided on the mounting frame (101). Dust filter (102). 4. A high-strength noise-reducing centrifugal fan according to claim 1, characterized in that: the outer casing (1) is provided with a conical air guide plate (103) on the outer side of the fan blade (7), so Noise-absorbing cotton (104) is provided on the inner side walls of the outer casing (1) and the air guide pipe (8). 5. A high-strength noise-reducing centrifugal fan according to claim 1, wherein a limit ring (61) is movably arranged on the transmission shaft (6), and the outer side of the limit ring (61) A plurality of support rods (62) are arranged on the upper body, and the other ends of the support rods (62) are arranged on the outer casing (1). 6 . The high-strength noise-reducing centrifugal fan according to claim 1 , wherein the adjacent sides of the transmission rod ( 25 ) and the buffer plate ( 27 ) are both set as chamfered surfaces. 7 . 7. A high-strength noise-reducing centrifugal fan according to claim 1, wherein a reinforcing rod (81) is provided on the outer surface of one side of the air guide pipe (8), and the reinforcing rod (81) ) is arranged on the outer casing (1). 8 . The high-strength noise-reducing centrifugal fan according to claim 1 , wherein a second dust-proof net ( 82 ) is provided at the upper end of the inside of the air duct ( 8 ). 9 .

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