CN217682361U

CN217682361U - Centrifugal fan

Info

Publication number: CN217682361U
Application number: CN202221167298.1U
Authority: CN
Inventors: 李建明; 万琼芳; 刘伟; 王旭; 刘建敏
Original assignee: Sichuan Niannianfeng Biotechnology Co ltd
Current assignee: Sichuan Niannianfeng Biotechnology Co ltd
Priority date: 2022-05-16
Filing date: 2022-05-16
Publication date: 2022-10-28
Anticipated expiration: 2032-05-16

Abstract

The utility model discloses a centrifugal fan belongs to fan technical field, including the fan base, fan base top fixed connection has the fan barrel, wear to be equipped with the power shaft on fan barrel one side, lie in on the fan barrel the seal groove has been seted up to the power shaft periphery, the inside card of seal groove is pressed there is the sealing washer. Through set up the support carousel at centrifugal fan blade tip, and set up the end face bearing who is used for the direction to support and be used for spacing support cassette in supporting the carousel periphery, can ensure that the rotation stationarity of centrifugal fan blade is higher, avoid vibrating, thereby reduce pivoted noise, it is very practical, through set up the connection pad between motor power and power shaft, the transfer line, stopper and spring, can transmit power through the transfer line, can remove the vibrations that motor power rotated the in-process at the transmission in-process, avoid because centrifugal fan blade rotates the in-process and have great vibrations, and influence life.

Description

Centrifugal fan

Technical Field

The utility model relates to a centrifugal fan especially relates to a centrifugal fan, belongs to fan technical field.

Background

Along with the rapid development of social economy, the fan is widely used in life of people, wherein the centrifugal fan has many advantages and is more and more popular, and airflow enters a blade space from the axial direction of the fan and then rotates along with the impeller under the driving of the impeller when the fan works; on the other hand, the fan which increases energy under the action of inertia, leaves the impeller along the radial direction and works by the generated centrifugal force is called a centrifugal fan, the working principle of the centrifugal fan is basically the same as that of a turbine compressor, and the change of the specific volume of the gas is generally not considered because the gas flow speed is lower and the pressure change is not large, namely the gas is treated as the incompressible fluid.

Centrifugal fan among the prior art is at the during operation, and the centrifugal blade work is driven through the motor power directly mostly, and the vibrations of motor can be transmitted on the blade, causes the turning clearance of blade to increase, can lead to blade pivoted noise to increase moreover, designs a centrifugal fan for this and optimizes above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a centrifugal fan, through setting up at centrifugal fan blade tip and supporting the carousel, and support the carousel periphery and set up the end face bearing who is used for the direction to support and be used for spacing support cassette, can ensure that the rotation stationarity of centrifugal fan blade is higher, avoid the vibration, thereby reduce pivoted noise, and is extremely practical, through set up the connection pad between motor power and power shaft, the transfer line, stopper and spring, can transmit power through the transfer line, can eliminate the vibrations of motor power rotation in-process in the transmission, avoid because centrifugal fan blade rotates the in-process and have great vibrations, and influence life.

The purpose of the utility model can be achieved by adopting the following technical scheme:

the utility model provides a centrifugal fan, includes the fan base, fan base top fixed connection has the fan barrel, wear to be equipped with the power shaft on fan barrel one side, be located on the fan barrel the seal groove has been seted up to the power shaft periphery, the inside card of seal groove presses there is the sealing washer, the power shaft with the fan barrel passes through the sealing washer rotates sealing connection, the power shaft is located fan barrel one end fixedly connected with supports the carousel, lie in on the fan barrel inner wall support the carousel periphery and be provided with the support cassette, support the carousel both ends with support the cassette and all block between the fan barrel inner wall and press there is the end face bearing, it keeps away from to support the carousel power shaft one end has centrifugal fan blade through the screw connection.

Preferably, mounting grooves are formed in the two opposite side walls of the fan base, and mounting holes are formed in the bottom of each mounting groove.

Preferably, the fan cylinder with there is the air inlet cylinder through the screw connection on the relative lateral wall of power shaft, integrated into one piece has circular shape mounting flange on the air inlet cylinder.

Preferably, a square air outlet pipe is integrally formed on one side of the top of the fan cylinder, and a square connecting flange is integrally formed on the top of the air outlet pipe.

Preferably, the fan base is provided with a motor support fixedly connected to one side of the fan barrel, a power motor is connected to the upper portion of the motor support through bolts, and connecting discs are fixedly connected to opposite ends of the power motor and the power shaft through bolts.

Preferably, four transmission rods penetrate through the connecting disc and are in sliding connection with the connecting disc, limiting blocks are fixedly connected to two end portions of each transmission rod, and springs are clamped and pressed between the two connecting discs and between the connecting disc and the limiting blocks on the periphery of each transmission rod.

The utility model has the advantages of that:

the utility model provides a pair of centrifugal fan, through setting up at centrifugal fan blade tip and supporting the carousel, and support the carousel periphery and set up the end face bearing who is used for the direction to support and be used for spacing support cassette, can ensure that the rotation stationarity of centrifugal fan blade is higher, avoid vibrating, thereby reduce the pivoted noise, it is very practical, through setting up the connection pad between motor power and power shaft, the transfer line, stopper and spring, can transmit power through the transfer line, can remove the vibrations of motor power rotation in-process in the transmission process, avoid because centrifugal fan blade rotates the in-process and have great vibrations, and influence life.

Drawings

Fig. 1 is a schematic overall perspective view of a centrifugal fan according to a preferred embodiment of the present invention;

fig. 2 is a front cross-sectional view of a preferred embodiment of a centrifugal fan according to the present invention;

fig. 3 is an enlarged view of a portion of fig. 2 at a, in accordance with a preferred embodiment of a centrifugal fan in accordance with the present invention;

fig. 4 is a partial enlarged view of a preferred embodiment of a centrifugal fan according to the present invention, shown at B in fig. 2.

In the figure: 1-a fan base, 2-a mounting groove, 3-a mounting hole, 4-a fan barrel, 5-a motor support, 6-a power motor, 7-an air inlet barrel, 8-an air outlet pipe, 9-a centrifugal fan blade, 10-a support clamping seat, 11-a support turntable, 12-an end face bearing, 13-a power shaft, 14-a sealing groove, 15-a sealing ring, 16-a connecting disc, 17-a transmission rod, 18-a limiting block and 19-a spring.

Detailed Description

In order to make the technical solutions of the present invention clearer and clearer for those skilled in the art, the present invention is further described in detail below with reference to the following examples and drawings, but the embodiments of the present invention are not limited thereto.

As shown in fig. 1 to 4, the centrifugal fan provided in this embodiment includes a fan base 1, a fan cylinder 4 is fixedly connected above the fan base 1, a power shaft 13 penetrates through one side of the fan cylinder 4, a sealing groove 14 is formed in the periphery of the power shaft 13 on the fan cylinder 4, a sealing ring 15 is clamped and pressed in the sealing groove 14, the power shaft 13 and the fan cylinder 4 are rotationally and hermetically connected through the sealing ring 15, a supporting turntable 11 is fixedly connected to one end of the power shaft 13 on the fan cylinder 4, a supporting clamping seat 10 is arranged on the periphery of the supporting turntable 11 on the inner wall of the fan cylinder 4, end face bearings 12 are clamped and pressed between two ends of the supporting turntable 11 and the supporting clamping seat 10 as well as between the inner wall of the fan cylinder 4, and one end of the supporting turntable 11, which is far away from the power shaft 13, is connected to a centrifugal fan blade 9 through a screw.

By adopting the technical scheme, the end face bearing 12 used for guiding and supporting and the supporting clamping seat 10 used for limiting are arranged on the periphery of the supporting turntable 11 by arranging the supporting turntable 11 at the end part of the centrifugal fan blade 9, so that the rotation stability of the centrifugal fan blade 9 is ensured to be higher, the vibration is avoided, the rotating noise is reduced, and the centrifugal fan blade is very practical.

In this embodiment, all seted up mounting groove 2 on the relative both sides wall of fan base 1, mounting hole 3 has been seted up to 2 bottoms of mounting groove, and mounting hole 3 is used for installing this fan.

In this embodiment, an air inlet cylinder 7 is connected to one side wall of the fan cylinder 4 opposite to the power shaft 13 through a screw, a circular mounting flange is integrally formed on the air inlet cylinder 7, a square air outlet pipe 8 is integrally formed on one side of the top of the fan cylinder 4, a square connecting flange is integrally formed on the top of the air outlet pipe 8, and the mounting flange and the connecting flange are used for being connected with an external air duct.

In this embodiment, lie in fan barrel 4 one side fixedly connected with motor support 5 on the fan base 1, there is power motor 6 motor support 5 top through bolted connection, power motor 6 and power shaft 13 one end in opposite directions all through bolt fixedly connected with connection pad 16, wear to be equipped with four transfer lines 17 on the connection pad 16, and four transfer lines 17 and connection pad 16 sliding connection, transfer line 17 both ends fixedly connected with stopper 18, transfer line 17 periphery lies in two connection pads 16 and connection pad 16 and stopper 18 between all the chucking have spring 19.

By adopting the technical scheme, the connecting disc 16, the transmission rod 17, the limiting block 18 and the spring 19 are arranged between the power motor 6 and the power shaft 13, power can be transmitted through the transmission rod 17, vibration in the rotating process of the power motor 6 can be eliminated in the transmission process, and the influence on the service life due to larger vibration in the rotating process of the centrifugal fan blade 9 is avoided.

The working principle is as follows: in the use process, the fan can be fixed through the mounting hole 3 on the fan base 1, then, the power supply is connected, the power motor 6 is started, the centrifugal fan blade 9 can be driven to rotate, under the centrifugal action, the wind can be blown out from the wind outlet pipe 8, the connecting disc 16, the transmission rod 17, the limiting block 18 and the spring 19 are arranged between the power motor 6 and the power shaft 13, the power can be transmitted through the transmission rod 17, the vibration in the rotation process of the power motor 6 can be eliminated in the transmission process, the influence on the service life due to the larger vibration in the rotation process of the centrifugal fan blade 9 is avoided, meanwhile, in the rotation process of the centrifugal fan blade 9, the supporting turntable 11 is arranged at the end part of the centrifugal fan blade 9, the end face bearing 12 for guiding and supporting and the supporting clamping seat 10 for limiting are arranged on the periphery of the supporting turntable 11, the higher rotation stability of the centrifugal fan blade 9 can be ensured, the vibration is avoided, and the rotating noise is reduced, and the fan is very practical.

Above, only the further embodiments of the present invention are shown, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can replace or change the technical solution and the concept of the present invention within the protection scope of the present invention.

Claims

1. A centrifugal fan, its characterized in that: including fan base (1), fan base (1) top fixed connection has fan barrel (4), wear to be equipped with power shaft (13) on fan barrel (4) one side, lie in fan barrel (4) power shaft (13) periphery has seted up seal groove (14), the inside card of seal groove (14) is pressed there is sealing washer (15), power shaft (13) with fan barrel (4) pass through sealing washer (15) rotate sealing connection, power shaft (13) are located fan barrel (4) one end fixedly connected with supports carousel (11), lie in on fan barrel (4) inner wall support carousel (11) periphery is provided with supports cassette (10), support carousel (11) both ends with support cassette (10) and all the card between fan barrel (4) inner wall is pressed there is end face bearing (12), it keeps away from to support carousel (11) power shaft (13) one end has centrifugal fan blade (9) through the screw connection.

2. A centrifugal fan according to claim 1, wherein: mounting grooves (2) are formed in two opposite side walls of the fan base (1), and mounting holes (3) are formed in the bottoms of the mounting grooves (2).

3. A centrifugal fan according to claim 2, wherein: fan barrel (4) with there is air inlet barrel (7) through the screw connection on the relative lateral wall of power shaft (13), integrated into one piece has circular shape mounting flange on air inlet barrel (7).

4. A centrifugal fan according to claim 3, wherein: the fan is characterized in that a square air outlet pipe (8) is integrally formed on one side of the top of the fan barrel body (4), and a square connecting flange is integrally formed on the top of the air outlet pipe (8).

5. A centrifugal fan according to claim 4, wherein: the fan base (1) is located fan barrel (4) one side fixedly connected with motor support (5), there are motor power (6) motor support (5) top through bolted connection, motor power (6) and power shaft (13) one end all through bolt fixedly connected with connection pad (16) in opposite directions.

6. A centrifugal fan according to claim 5, wherein: wear to be equipped with four transfer lines (17) on connection pad (16), and four transfer lines (17) with connection pad (16) sliding connection, transfer line (17) both ends fixedly connected with stopper (18), transfer line (17) periphery is located two connection pad (16) and it has spring (19) all to block the pressure between connection pad (16) and stopper (18).