CN213574865U

CN213574865U - Centrifugal fan box with noise reduction function

Info

Publication number: CN213574865U
Application number: CN202022570285.6U
Authority: CN
Inventors: 赵育根
Original assignee: Shanghai Doucai Construction Technology Co ltd
Current assignee: Shanghai Doucai Construction Technology Co ltd
Priority date: 2020-11-09
Filing date: 2020-11-09
Publication date: 2021-06-29
Anticipated expiration: 2030-11-09

Abstract

The utility model discloses a centrifugal fan case with function of making an uproar is fallen, the power distribution box comprises a box body, the lower terminal surface fixed mounting of box has the outer sleeve, the inside of outer sleeve is cup jointed and is installed the inner skleeve, the up end fixed mounting of inner skleeve has the stopper, the inside of outer sleeve is provided with spring one, the lower terminal surface fixed mounting of inner skleeve has the base, the avris fixed mounting of inner skleeve has the bracing piece. This centrifugal fan case with function of making an uproar is fallen, the bottom half is provided with the outer sleeve, and when the box produced the vibration, the outer sleeve reciprocated through the inner skleeve, drives the inside and outside removal of movable sleeve simultaneously, and spring one, two pairs of outer sleeves of spring cushion and reset, have improved the shock attenuation nature and the life of box, and the box is inside to be provided with vacuum glass, and the vacuum glass outside is provided with inhales the sound cotton, and the inboard is provided with basf sound absorption foam, has reduceed the propagation of noise greatly, improves centrifugal fan's the performance of making an upr.

Description

Centrifugal fan box with noise reduction function

Technical Field

The utility model relates to a centrifugal fan technical field specifically is a centrifugal fan case with function of making an uproar is fallen.

Background

The centrifugal fan is a machine which increases the gas pressure and discharges gas by means of input mechanical energy, is a driven fluid machine, is widely used for ventilation, dust exhaust and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings, ventilation and draught of boilers and industrial kilns, cooling and ventilation in air conditioning equipment and household electrical equipment, and drying and sorting of grains; wind tunnel wind source and air cushion boat inflation and propulsion.

Most centrifugal fan does not possess the noise reduction function now, and in the use, motor drive blade rotates, makes quick-witted case produce violent vibration, produces a large amount of noises and can produce certain damage to quick-witted case simultaneously, reduces the life of quick-witted case.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a centrifugal fan case with function of making an uproar is fallen to provide in solving above-mentioned background art and present most centrifugal fan do not possess the function of making an uproar of falling, in the use, the motor drive blade rotates, makes quick-witted case produce violent vibration, produces a large amount of noises and can produce certain damage to quick-witted case simultaneously, reduces the problem of the life of quick-witted case.

In order to achieve the above object, the utility model provides a following technical scheme: a centrifugal fan box with a noise reduction function comprises a box body, wherein an outer sleeve is fixedly mounted on the lower end face of the box body, an inner sleeve is sleeved inside the outer sleeve, a limiting block is fixedly mounted on the upper end face of the inner sleeve, a first spring is arranged inside the outer sleeve, a base is fixedly mounted on the lower end face of the inner sleeve, a supporting rod is fixedly mounted on the lateral side of the inner sleeve, a movable sleeve and a second spring are sleeved outside the supporting rod, one end of a connecting rod is fixedly mounted on the outer side of the outer sleeve through a rotating shaft, a box is fixedly mounted inside the box body through a support, an air inlet pipe is fixedly mounted on the lateral side of the box, a driving motor is fixedly mounted on the lateral side of the box, an impeller rear disc is fixedly mounted on an output shaft of the driving motor, the avris fixed mounting of blade has the impeller front disc, the air outlet has been seted up to the avris of machine case, the inside fixed mounting of box has vacuum glass, the inside of box is provided with inhales sound cotton, basf sound absorption foam.

Preferably, the diameter of the limiting block is larger than that of the opening of the outer sleeve, and the spring is located on the upper side of the limiting block.

Preferably, telescopic avris symmetry is provided with two including the bracing piece, activity sleeve, spring two and bracing piece one-to-one, spring two is located the telescopic outside of activity, the other end of connecting rod passes through pivot fixed mounting at the telescopic up end of activity, connecting rod and activity sleeve one-to-one.

Preferably, the outer end of air-supply line extends to the outside of box, the inner of air-supply line extends to the inboard of impeller front bezel, the blade is located between impeller back plate, the impeller front bezel, the blade annular is provided with a plurality ofly.

Preferably, the air outlet extends to the outer side of the box body, and the air outlet is positioned above the air inlet pipe.

Preferably, the sound absorption cotton is located between the vacuum glass and the box body, and the basf sound absorption foam is located between the vacuum glass and the case.

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

1. according to the centrifugal fan box with the noise reduction function, the outer sleeve is arranged at the bottom of the box body, when the box body vibrates, the outer sleeve moves up and down through the inner sleeve, the movable sleeve is driven to move inside and outside simultaneously, the first spring and the second spring buffer and reset the outer sleeve, and the vibration reduction performance and the service life of the box body are improved;

2. this centrifugal fan case with function of making an uproar is fallen, the inside vacuum glass that is provided with of box, the vacuum glass outside is provided with inhales the sound cotton, and the inboard is provided with basf sound absorption foam, has reduceed the propagation of noise greatly, improves centrifugal fan's the performance of making an uproar of falling.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic view of the internal structure of the present invention;

FIG. 3 is a schematic view of the internal structure of the present invention;

fig. 4 is a schematic view of the inner structure of the outer sleeve of the present invention.

In the figure: 1. a box body; 2. an outer sleeve; 3. an inner sleeve; 4. a limiting block; 5. a first spring; 6. a base; 7. a support bar; 8. a movable sleeve; 9. a second spring; 10. a connecting rod; 11. a chassis; 12. an air inlet pipe; 13. a drive motor; 14. an impeller rear disc; 15. a blade; 16. an impeller front disc; 17. an air outlet; 18. vacuum glass; 19. sound-absorbing cotton; 20. a basf sound absorbing foam.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a centrifugal fan box with a noise reduction function comprises a box body 1, an outer sleeve 2, an inner sleeve 3, a limiting block 4, a first spring 5, a base 6, a supporting rod 7, a movable sleeve 8, a second spring 9, a connecting rod 10, a case 11, an air inlet pipe 12, a driving motor 13, a rear impeller disc 14, blades 15, a front impeller disc 16, an air outlet 17, vacuum glass 18, sound absorption cotton 19 and BASF sound absorption foam 20, wherein the outer sleeve 2 is fixedly installed on the lower end face of the box body 1, the inner sleeve 3 is installed inside the outer sleeve 2 in a sleeved mode, the limiting block 4 is fixedly installed on the upper end face of the inner sleeve 3, the first spring 5 is arranged inside the outer sleeve 2, the inner sleeve 6 is fixedly installed on the lower end face of the inner sleeve 3, the supporting rod 7 is fixedly installed on the side of the inner sleeve 3, the movable sleeve 8 and the second spring 9 are installed on the, the inside of box 1 has quick-witted case 11 through support fixed mounting, the avris fixed mounting of quick-witted case 11 has air-supply line 12, the avris fixed mounting of quick-witted case 11 has driving motor 13, fixed mounting has impeller back plate 14 on driving motor 13's the output shaft, the avris fixed mounting of impeller back plate 14 has blade 15, the avris fixed mounting of blade 15 has impeller front plate 16, air outlet 17 has been seted up to the avris of quick-witted case 11, the inside fixed mounting of box 1 has vacuum glass 18, the inside of box 1 is provided with inhales sound cotton 19, basf sound absorption foam 20.

Further, the diameter of stopper 4 is greater than the diameter of 2 openings of outer sleeve, and spring 5 is located the upside of stopper 4, and inner skleeve 3 reciprocates in outer sleeve 2, and stopper 4 prevents that inner skleeve 3 from droing, and spring 5 plays the cushioning effect to inner skleeve 3.

Further, bracing piece 7 is provided with two at the avris symmetry of inner sleeve 3, movable sleeve 8, two 9 and bracing piece 7 one-to-one of spring, and two 9 of spring are located movable sleeve 8's the outside, and the other end of connecting rod 10 passes through pivot fixed mounting at movable sleeve 8's up end, and connecting rod 10 and movable sleeve 8 one-to-one, when outer sleeve 2 moves down, drive movable sleeve 8 through connecting rod 10 and outwards remove, and two 9 of spring reset movable sleeve 8.

Furthermore, the outer end of the air inlet pipe 12 extends to the outer side of the box body 1, the inner end of the air inlet pipe 12 extends to the inner side of the front disc 16 of the impeller, the blades 15 are located between the rear disc 14 of the impeller and the front disc 16 of the impeller, the plurality of blades 15 are annularly arranged, the driving motor 13 drives the blades 15 to rotate through the rear disc 14 of the impeller, and the blades 15 suck external air into the case 11 through the air inlet pipe 12.

Further, the air outlet 17 extends to the outside of the box body 1, the air outlet 17 is located above the air inlet pipe 12, and air inside the cabinet 11 is discharged through the air outlet 17.

Further, the sound absorption cotton 19 is located between the vacuum glass 18 and the box body 1, the basf sound absorption foam 20 is located between the vacuum glass 18 and the case 11, the vacuum glass 18 and the sound absorption cotton 19 reduce noise transmission, and the basf sound absorption foam 20 has a sound absorption function, flame retardance and abrasion resistance, and has a buffering effect on the outside of the case 11.

The working principle is as follows: firstly, the driving motor 13 drives the blades 15 to rotate through the impeller rear disc 14, the blades 15 suck external air into the case 11 through the air inlet pipe 12 and then discharge the air through the air outlet 17, when in use, the case 11 generates vibration to generate noise, the case body 1 drives the outer sleeve 2 at the bottom to vibrate, the outer sleeve 2 moves outside the inner sleeve 3, the spring I5 plays a role in buffering the outer sleeve 2 to reduce the generation of noise, meanwhile, the outer sleeve 2 drives the movable sleeve 8 to move inside and outside through the connecting rod 10, the spring II 9 resets the movable sleeve 8, the damping performance of the box body 1 is improved, the vacuum glass 18 and the sound-absorbing cotton 19 arranged in the box body 1 can reduce the transmission of noise, the Basff sound-absorbing foam 20 has the sound-absorbing function and also has the flame retardance and the abrasion resistance, the buffer function is realized on the outside of the case 11, and the noise reduction performance of the centrifugal fan is greatly improved.

It should be finally noted that the above only serves to illustrate the technical solution of the present invention, and not to limit the scope of the present invention, and that simple modifications or equivalent replacements performed by those skilled in the art to the technical solution of the present invention do not depart from the spirit and scope of the technical solution of the present invention.

Claims

1. The utility model provides a centrifugal fan case with function of making an uproar is fallen, includes box (1), its characterized in that: the lower terminal surface fixed mounting of box (1) has outer sleeve (2), the inside of outer sleeve (2) is cup jointed and is installed inner skleeve (3), the up end fixed mounting of inner skleeve (3) has stopper (4), the inside of outer sleeve (2) is provided with spring (5), the lower terminal surface fixed mounting of inner skleeve (3) has base (6), the avris fixed mounting of inner skleeve (3) has bracing piece (7), the outside of bracing piece (7) is cup jointed and is installed movable sleeve (8), spring two (9), the outside of outer sleeve (2) has the one end of connecting rod (10) through pivot fixed mounting, the inside of box (1) has quick-witted case (11) through support fixed mounting, the avris fixed mounting of machine case (11) has air-supply line (12), the avris fixed mounting of machine case (11) has driving motor (13), fixed mounting has impeller back dish (14) on the output shaft of driving motor (13), the avris fixed mounting of impeller back dish (14) has blade (15), the avris fixed mounting of blade (15) has impeller front wall (16), air outlet (17) have been seted up to the avris of quick-witted case (11), the inside fixed mounting of box (1) has vacuum glass (18), the inside of box (1) is provided with inhales sound cotton (19), basf sound absorption foam (20).

2. The centrifugal fan box with the noise reduction function according to claim 1, characterized in that: the diameter of the limiting block (4) is larger than that of the opening of the outer sleeve (2), and the first spring (5) is located on the upper side of the limiting block (4).

3. The centrifugal fan box with the noise reduction function according to claim 1, characterized in that: the avris symmetry of sleeve (3) is provided with two including bracing piece (7), activity sleeve (8), spring two (9) and bracing piece (7) one-to-one, spring two (9) are located the outside of activity sleeve (8), the other end of connecting rod (10) is through the up end of pivot fixed mounting at activity sleeve (8), connecting rod (10) and activity sleeve (8) one-to-one.

4. The centrifugal fan box with the noise reduction function according to claim 1, characterized in that: the outer end of air-supply line (12) extends to the outside of box (1), the inner of air-supply line (12) extends to the inboard of impeller front disc (16), blade (15) are located between impeller back dish (14), impeller front disc (16), blade (15) annular is provided with a plurality ofly.

5. The centrifugal fan box with the noise reduction function according to claim 1, characterized in that: the air outlet (17) extends to the outer side of the box body (1), and the air outlet (17) is located above the air inlet pipe (12).

6. The centrifugal fan box with the noise reduction function according to claim 1, characterized in that: the sound absorption cotton (19) is located between the vacuum glass (18) and the box body (1), and the BASF sound absorption foam (20) is located between the vacuum glass (18) and the case (11).