CN215762304U

CN215762304U - Noise-reduction type large-air-volume centrifugal fan

Info

Publication number: CN215762304U
Application number: CN202122301785.4U
Authority: CN
Inventors: 董海峰; 丁雪婷; 王青春
Original assignee: Yishimer Fan Ningbo Co ltd
Current assignee: Yishimer Fan Ningbo Co ltd
Priority date: 2021-09-23
Filing date: 2021-09-23
Publication date: 2022-02-08
Anticipated expiration: 2031-09-23

Abstract

The utility model discloses a noise reduction type large-air-volume centrifugal fan which comprises a fan body, wherein the fan body comprises a bottom frame, an air box, an air inlet pipe, an air outlet pipe, a sound insulation box and a motor, a rotor is rotatably connected to the middle part of the inner wall of the air box, a centrifugal impeller is fixedly arranged on the surface of the rotor, a blanking hopper is arranged on one side of the bottom of the air inlet pipe, an electromagnetic valve is fixedly arranged at the bottom of the blanking hopper, a measuring plate is fixedly connected to the middle part of the inner wall of the air inlet pipe, a mounting groove is formed in the middle part of the measuring plate, a material level switch is fixedly arranged in the mounting groove, and a stabilizing mechanism is fixedly arranged at the bottom of the fan body; the bottom of fan body adds stabilizing mean, has wholly improved the stability in the centrifugal fan use.

Description

Noise-reduction type large-air-volume centrifugal fan

Technical Field

The utility model relates to the field of centrifugal fans, in particular to a noise reduction type large-air-volume centrifugal fan.

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 centrifugal fan accelerates gas by using an impeller rotating at a high speed according to the principle that kinetic energy is converted into potential energy, and then decelerates and changes the flow direction so as to convert the kinetic energy into the potential energy (pressure).

Current centrifugal fan need follow the external air intake that induced drafts in the use, contains some impurity and generally need filter in the air, but when filterable impurity accumulation is more, can influence centrifugal fan's air inlet work, needs relevant personnel to clear up air inlet department, has reduced relevant personnel's work efficiency, uses inconveniently.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a noise reduction type large-air-volume centrifugal fan, which aims to solve the problems that the existing centrifugal fan needs to suck air from the outside in the use process, the air generally needs to be filtered when impurities are contained in the air, the air inlet work of the centrifugal fan is influenced when the filtered impurities are accumulated more, related personnel are needed to clean the air inlet part, the work efficiency of the related personnel is reduced, and the use is inconvenient.

In order to achieve the purpose, the utility model provides the following technical scheme: a noise reduction type large-air-volume centrifugal fan comprises a fan body, wherein the fan body comprises a bottom frame, an air box, an air inlet pipe, an air outlet pipe, a sound insulation box and a motor, the air box is fixedly arranged at the front middle part of the bottom frame, the air inlet pipe is fixedly communicated with the front middle part of the air box, the air outlet pipe is fixedly communicated with the top part of the air box, the sound insulation box is fixedly connected with one side of the top part of the bottom frame, the motor is fixedly arranged at one side of the bottom part of the inner wall of the sound insulation box, a rotor is rotatably connected at the middle part of the inner wall of the air box, a centrifugal impeller is fixedly arranged on the surface of the rotor, a blanking hopper is arranged at one side of the bottom part of the air inlet pipe, a solenoid valve is fixedly arranged at the bottom part of the blanking hopper, a filter screen is clamped at one side inside of the air inlet pipe, a gauge plate is fixedly connected at the middle part of the inner wall of the air inlet pipe, a mounting groove is provided with a material level switch, the bottom fixed mounting of fan body has stabilizing mean, stabilizing mean includes fixed plate, fixed block and rubber bottom plate, the bottom fixedly connected with rubber bottom plate of fixed plate, the equal fixedly connected with fixed block in both sides of fixed plate, the middle part fixed mounting of air-supply line one side has starting switch.

As a preferred technical scheme of the utility model, the motor is electrically connected with an external power supply through a starting switch, and the electromagnetic valve is electrically connected with the external power supply through a material level switch.

As a preferred technical scheme of the utility model, one end of the air inlet pipe, which is far away from the air box, is fixedly provided with an air inlet flange, and the diameter of the air inlet flange is 536 mm.

As a preferred technical scheme of the utility model, one end of the air outlet pipe, which is far away from the air box, is fixedly provided with an air outlet flange, and the diameter of the air outlet flange is 580 mm.

As a preferred technical scheme of the utility model, the output end of the motor is fixedly connected with the rotor, the side of the inner wall of the sound insulation box, which is far away from the motor, is fixedly connected with sound absorption cotton, and the side of the sound insulation box, which is far away from the air box, is provided with a plurality of heat dissipation holes.

As a preferable technical scheme of the present invention, the bottom of the fixing block is provided with a fixing groove, the top of the inner wall of the fixing groove is fixedly provided with a spring, and the bottom of the spring passes through the fixing groove and extends to the outside.

As a preferred technical scheme of the utility model, the middle part of the fixing plate is provided with a middle groove, and the inside of the middle groove is fixedly connected with a plurality of arc-shaped elastic sheets.

Compared with the prior art, the utility model has the beneficial effects that:

the air inlet pipe is arranged on the fan body, the filter screen, the blanking hopper, the electromagnetic valve and the material level switch are arranged in the air inlet pipe, the filter screen filters and screens the entering air during air inlet, filtered impurities are stored at one side in the air inlet pipe, when the impurities are accumulated to a certain height, the material level switch is triggered to work, the material level switch controls the electromagnetic valve to be opened, the impurities are discharged from the bottom of the blanking hopper, automatic cleaning is realized, the working efficiency of related personnel is improved, and the use is convenient; stabilizing mean is add to the bottom of fan body, and stabilizing mean includes fixed plate, fixed block and rubber bottom plate, and fixed block bottom installation spring, a plurality of arc shell fragments of fixed plate mid-mounting cooperate the rubber bottom plate of bottom, can improve the stability in the centrifugal fan use.

Drawings

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

FIG. 2 is a rear view of the present invention;

FIG. 3 is a side cross-sectional view of the blower body of the present invention;

FIG. 4 is an internal structural view of an air inlet duct according to the present invention;

fig. 5 is a structural view of the stabilizing mechanism of the present invention.

In the figure: 1. a fan body; 2. a chassis; 3. an air box; 4. an air outlet pipe; 5. a stabilizing mechanism; 6. an air inlet pipe; 7. a sound insulation box; 8. a motor; 9. sound-absorbing cotton; 10. a centrifugal impeller; 11. a rotor; 12. an air outlet flange; 13. heat dissipation holes; 14. an air inlet flange; 15. a filter screen; 16. feeding a hopper; 17. an electromagnetic valve; 18. measuring a plate; 19. mounting grooves; 20. a material level switch; 21. starting a switch; 22. a fixing plate; 23. a fixed block; 24. a spring; 25. a rubber bottom plate; 26. a middle groove; 27. an arc-shaped elastic sheet; 28. and fixing the grooves.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, the utility model provides a noise reduction type large-air-volume centrifugal fan, which comprises a fan body 1, wherein the fan body 1 comprises a bottom frame 2, an air box 3, an air inlet pipe 6, an air outlet pipe 4, a sound insulation box 7 and a motor 8, the middle part of the front surface of the bottom frame 2 is fixedly provided with the air box 3, the middle part of the front surface of the air box 3 is fixedly communicated with the air inlet pipe 6, the top part of the air box 3 is fixedly communicated with the air outlet pipe 4, one side of the top part of the bottom frame 2 is fixedly connected with the sound insulation box 7, one side of the bottom part of the inner wall of the sound insulation box 7 is fixedly provided with the motor 8, the middle part of the inner wall of the air box 3 is rotatably connected with a rotor 11, the surface of the rotor 11 is fixedly provided with a centrifugal impeller 10, one side of the bottom part of the air inlet pipe 6 is provided with a blanking hopper 16, the bottom part of the blanking hopper 16 is fixedly provided with an electromagnetic valve 17, one side of the inner part of the air inlet pipe 6 is clamped with a filter screen 15, the middle part of the inner wall of the air inlet pipe 6 is fixedly connected with a measuring plate 18, the middle part of the gauge plate 18 is provided with a mounting groove 19, the inside of the mounting groove 19 is fixedly provided with a material level switch 20, the bottom of the fan body 1 is fixedly provided with a stabilizing mechanism 5, the stabilizing mechanism 5 comprises a fixing plate 22, a fixing block 23 and a rubber bottom plate 25, the bottom of the fixing plate 22 is fixedly connected with the rubber bottom plate 25, both sides of the fixing plate 22 are fixedly connected with the fixing block 23, the middle part of one side of the air inlet pipe 6 is fixedly provided with a starting switch 21, the motor 8 is started to work through the starting switch 21, the motor 8 drives the rotor 11 and the centrifugal impeller 10 to rotate at high speed, the fan body 1 performs air pumping and exhausting work, during air inlet, the filter screen 15 inside the air inlet pipe 6 can filter and screen the entering air, filtered impurities can be remained on one side inside the air inlet pipe 6, when the impurities inside the air inlet pipe 6 are accumulated to a certain height, the material level switch 20 in the middle part of the gauge plate 18 is triggered to work, material level switch 20 control solenoid valve 17 circular telegram is opened, later impurity can be followed hopper 16's bottom discharge down, accomplish the automatic clearance of impurity, relevant personnel's work efficiency has been improved, stabilizing mean 5 is add to the bottom of fan body 1, the bottom installation spring 24 of fixed block 23, a plurality of arc shell fragment 27 of fixed plate 22 mid-mounting, the rubber bottom plate 25 of cooperation top plate 22 bottom has in addition improved the stability in the centrifugal fan use greatly, the whole stable and effectual of use.

Preferably, the motor 8 is electrically connected with an external power supply through a starting switch 21, the electromagnetic valve 17 is electrically connected with the external power supply through a material level switch 20, the type of the material level switch 20 is ZJSP-KA, the starting switch 21 can control the motor 8 to work, the material level switch 20 is used for controlling the electromagnetic valve 17 to open to discharge materials when impurities on one side inside the air inlet pipe 6 reach a certain height, during air inlet, the filter screen 15 inside the air inlet pipe 6 can filter and screen the entering air, the impurities in the air are prevented from damaging the equipment, the filtered impurities can be remained on one side inside the air inlet pipe 6, when the impurities inside the air inlet pipe 6 are accumulated to a certain height, the material level switch 20 in the middle of the gauge plate 18 is triggered to work, the material level switch 20 controls the electromagnetic valve 17 to be powered on to be opened, then the impurities can be discharged from the bottom of the discharging hopper 16, and automatic cleaning of the impurities is completed.

Preferably, an air inlet flange 14 is fixedly installed at one end of the air inlet pipe 6, which is far away from the air box 3, the diameter of the air inlet flange 14 is 536mm, and the air inlet flange 14 is used for connecting a pipeline with the air outlet pipe 4.

Preferably, an air outlet flange 12 is fixedly installed at one end, far away from the air box 3, of the air outlet pipe 4, the diameter of the air outlet flange 12 is 580mm, the air outlet flange 12 is used for connecting a pipeline of the air outlet pipe 4, an external pipeline is connected well during use, the motor 8 drives the rotor 11 and the centrifugal impeller 10 to rotate at a high speed, after external air enters the air box 3 from the air inlet pipe 6, the centrifugal impeller 10 rotating at a high speed is used for accelerating air, then the speed is reduced, the flow direction is changed, kinetic energy is converted into potential energy, then the air is discharged from the air outlet pipe 4 at the top of the air box 3, and the air pumping and exhausting work of the centrifugal fan is completed.

Preferably, motor 8's output and rotor 11 fixed connection, the cotton 9 of inhaling of sound is connected with to the one side fixedly connected with that motor 8 was kept away from to the internal wall of sound-proof box 7, and a plurality of louvres 13 have been seted up to the one side that bellows 3 was kept away from to sound-proof box 7, inhales the cotton 9 of sound and can absorb some noises that motor 8 produced, and louvre 13 is convenient for motor 8's heat dissipation.

Preferably, the bottom of the fixing block 23 is provided with a fixing groove 28, the top of the inner wall of the fixing groove 28 is fixedly provided with a spring 24, the bottom of the spring 24 penetrates through the fixing groove 28 and extends to the outside, and the spring 24 can improve the stability of the fixing block 23.

Preferably, well groove 26 has been seted up at the middle part of fixed plate 22, a plurality of arc-shaped elastic pieces 27 of the inside fixedly connected with of well groove 26, the pressure that fixed plate 22 received can be cushioned to a plurality of arc-shaped elastic pieces 27, the opportunity of fan body 1 during operation can produce great vibrations, and then can produce great noise, spring 24, a plurality of arc-shaped elastic pieces 27 and rubber bottom plate 25 can improve the stability in the centrifugal fan use greatly, effectively cushion the top and rock pressure, the stability of bottom improves the vibrations that can reduce fan body 1, the production of noise has been reduced, avoid noise pollution.

When the noise reduction type large-air-volume centrifugal fan is used specifically, after a power supply is switched on, the motor 8 is started to work through the starting switch 21, the motor 8 is a high-power motor, the fan body 1 is a large-air-volume centrifugal fan, the motor 8 drives the rotor 11 and the centrifugal impeller 10 to rotate at a high speed, after external air enters the air box 3 from the air inlet pipe 6, the air is accelerated by the centrifugal impeller 10 rotating at the high speed, then is decelerated and changes the flow direction, kinetic energy is converted into potential energy, then the potential energy is discharged from the air outlet pipe 4 at the top of the air box 3, when air enters, the filter screen 15 in the air inlet pipe 6 can filter and screen the entering air, so that the damage to equipment caused by impurities in the air is prevented, the filtered impurities can be stored at one side in the air inlet pipe 6, when the impurities in the air inlet pipe 6 are accumulated to a certain height, the material level switch 20 in the middle of the metering plate 18 is triggered to work, the material level switch 20 controls the electromagnetic valve 17 to be powered on and switched on, the electromagnetic valve 17 is a normally closed electromagnetic valve, then impurities can be discharged from the bottom of the discharging hopper 16, automatic cleaning of the impurities is completed, working efficiency of related personnel is improved, the use is very convenient, the bottom of the fan body 1 is additionally provided with the stabilizing mechanism 5, the stabilizing mechanism 5 comprises a fixing plate 22, a fixing block 23 and a rubber bottom plate 25, the fan body 1 can generate large vibration when working, and further can generate large noise, the bottom of the fixing block 23 is provided with a spring 24, the middle of the fixing plate 22 is provided with a plurality of arc-shaped elastic pieces 27, in addition, the rubber bottom plate 25 at the bottom of the upper fixing plate 22 is matched, the stability in the using process of the centrifugal fan is greatly improved, the stability at the bottom can reduce the vibration of the fan body 1, and the sound-absorbing cotton 7 and the sound-absorbing cotton 9 can effectively block the sound generated by the motor 8, the whole noise reduction, noise pollution avoidance, stable use and good effect.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the utility model can be made, and equivalents and modifications of some features of the utility model can be made without departing from the spirit and scope of the utility model.

Claims

1. The utility model provides a big amount of wind centrifugal fan of type of making an uproar falls, includes fan body (1), its characterized in that: the fan comprises a fan body (1) and is characterized in that the fan body (1) comprises a bottom frame (2), an air box (3), an air inlet pipe (6), an air outlet pipe (4), a sound insulation box (7) and a motor (8), wherein the air box (3) is fixedly arranged at the front middle part of the bottom frame (2), the air box (3) is fixedly communicated with the front middle part of the air box (3) and is provided with the air inlet pipe (6), the air outlet pipe (4) is fixedly communicated with the top part of the air box (3), the sound insulation box (7) is fixedly connected with one side of the top part of the bottom frame (2), the motor (8) is fixedly arranged at one side of the bottom part of the inner wall of the sound insulation box (7), a rotor (11) is rotatably connected with the middle part of the inner wall of the air box (3), a centrifugal impeller (10) is fixedly arranged on the surface of the rotor (11), a blanking hopper (16) is arranged at one side of the bottom part of the air inlet pipe (6), and an electromagnetic valve (17) is fixedly arranged at the bottom part of the blanking hopper (16), the utility model discloses a fan, including air-supply line (6), mounting groove (19) are seted up to the middle part of gage plate (18), the inside one side joint of mounting groove (19) has filter screen (15), the middle part fixedly connected with gage plate (18) of air-supply line (6) inner wall, mounting groove (19) are seted up at the middle part of gage plate (18), the inside fixed mounting of mounting groove (19) has material level switch (20), the bottom fixed mounting of fan body (1) has stabilizing mean (5), stabilizing mean (5) are including fixed plate (22), fixed block (23) and rubber bottom plate (25), the bottom fixedly connected with rubber bottom plate (25) of fixed plate (22), the equal fixedly connected with fixed block (23) in both sides of fixed plate (22), the middle part fixed mounting of air-supply line (6) one side has start switch (21).

2. The noise reduction type large-air-volume centrifugal fan according to claim 1, characterized in that: the motor (8) is electrically connected with an external power supply through a starting switch (21), and the electromagnetic valve (17) is electrically connected with the external power supply through a material level switch (20).

3. The noise reduction type large-air-volume centrifugal fan according to claim 1, characterized in that: one end fixed mounting that bellows (3) were kept away from in air-supply line (6) has air intake flange (14), the diameter of air intake flange (14) is 536 mm.

4. The noise reduction type large-air-volume centrifugal fan according to claim 1, characterized in that: one end of the air outlet pipe (4) far away from the air box (3) is fixedly provided with an air outlet flange (12), and the diameter of the air outlet flange (12) is 580 mm.

5. The noise reduction type large-air-volume centrifugal fan according to claim 1, characterized in that: the output and rotor (11) fixed connection of motor (8), sound cotton (9) are inhaled to one side fixedly connected with that motor (8) were kept away from to sound proof box (7) inner wall, a plurality of louvres (13) have been seted up to one side that bellows (3) were kept away from to sound proof box (7).

6. The noise reduction type large-air-volume centrifugal fan according to claim 1, characterized in that: fixed slot (28) have been seted up to the bottom of fixed block (23), the top fixed mounting of fixed slot (28) inner wall has spring (24), the bottom of spring (24) is passed fixed slot (28) and is extended to the outside.

7. The noise reduction type large-air-volume centrifugal fan according to claim 1, characterized in that: a middle groove (26) is formed in the middle of the fixing plate (22), and a plurality of arc-shaped elastic pieces (27) are fixedly connected inside the middle groove (26).