CN219754906U

CN219754906U - Centrifugal fan with amortization function

Info

Publication number: CN219754906U
Application number: CN202321087167.7U
Authority: CN
Inventors: 牛德春; 聂春海; 胡平
Original assignee: Zhejiang Weibang Fan Co ltd
Current assignee: Zhejiang Weibang Fan Co ltd
Priority date: 2023-05-05
Filing date: 2023-05-05
Publication date: 2023-09-26
Anticipated expiration: 2033-05-05

Abstract

The utility model discloses a centrifugal fan with a silencing function, which comprises a main shell, wherein an auxiliary shell is fixedly arranged on one side of the main shell, a centrifugal fan main body is fixedly arranged on the inner sides of the main shell and the auxiliary shell, a silencing mechanism is arranged at the front end of an air outlet pipe of the centrifugal fan main body, the silencing mechanism comprises a fixed disc arranged at the front side of the air outlet pipe of the centrifugal fan main body, a silencing cylinder is fixedly arranged at the front end of the fixed disc, and a plurality of groups of bolts are connected between the fixed disc and the air outlet pipe of the centrifugal fan main body in a threaded manner. According to the centrifugal fan with the silencing function, the screwed joint is driven to be separated from the screwed joint by rotating the fixing frame, so that the wind flow cylinder can be taken out for treatment, the wind flow cylinder and the first sound absorbing cotton which can be treated or replaced can be conveniently and rapidly maintained, replaced, cleaned and the like without disassembling the whole silencing mechanism.

Description

Centrifugal fan with amortization function

Technical Field

The utility model relates to the technical field of centrifugal fans, in particular to a centrifugal fan with a silencing function.

Background

The centrifugal fan is a machine which increases the pressure of gas and discharges the gas by means of input mechanical energy, and is a driven fluid machine. Centrifugal fans are widely used for ventilation, dust removal and cooling of factories, mines, tunnels, vehicles, ships and buildings; ventilation and induced draft of boilers and industrial kilns; and cooling and ventilation in household appliances; drying and selecting grains; inflating and propelling the wind tunnel wind source and the air cushion ship; the conventional silencer used for the conventional centrifugal fan is simple in structure, and most of the silencer is directly exposed and arranged on the inner side of the cylindrical silencing barrel for noise reduction.

For example, the patent number is: the utility model provides a fan muffler of CN201922144862.2, includes the amortization body, the inside equidistance of amortization body is fixed with the amortization bowl, the inner wall of amortization body is fixed with inhales the sound cotton, the one end lateral wall cover of amortization body is established and is fixed with first sleeve pipe, first sheathed tube lateral wall symmetry is fixed with four L type guide bars, first sheathed tube lateral wall symmetry is fixed with the housing, the inside of housing all is provided with the threaded rod, the one end of threaded rod is all rotated with first sheathed tube lateral wall through the bearing and is connected. According to the utility model, the silencing bowl and the sound absorbing cotton are arranged in the silencing pipe body at equal intervals, so that a good silencing effect can be achieved, and the silencing pipe body and the air outlet pipe of the fan body can be conveniently and quickly connected through the first sleeve, the L-shaped guide rod, the housing, the threaded rod, the rotating handle, the connecting plate, the clamping block, the second sleeve and the vertical plate, so that the practicability is high.

The above-mentioned practical use has some drawbacks: if when the fan works, when noise is processed, the sound-absorbing cotton is only arranged on the inner wall of the cylinder, and under the long-term operation effect of the fan, the sound-absorbing cotton is also easy to damage due to the impact of airflow, so that the noise processing effect is poor, the stability of processing noise is reduced, the whole silencing device is required to be disassembled, and the sound-absorbing cotton on the inner wall of the cylinder is processed, replaced and the like.

Disclosure of Invention

The utility model mainly aims to provide a centrifugal fan with a silencing function, which can effectively solve the problems in the background technology.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

the utility model provides a centrifugal fan with amortization function, includes the main casing, one side fixed mounting of main casing has vice shell, the inboard fixed mounting of main casing, vice shell has the centrifugal fan main part, the air-out pipe front end of centrifugal fan main part installs amortization mechanism, amortization mechanism is including setting up the fixed disk at the centrifugal fan main part air-out pipe front side, the front end of fixed disk is fixed to be provided with amortization section of thick bamboo, threaded connection has a plurality of groups of bolts between the air-out pipe of fixed disk and centrifugal fan main part, a plurality of groups of hollow slots have been seted up to the inboard of amortization section of thick bamboo, the front side of hollow slot has been seted up flutedly, the rear side of hollow slot is provided with the hickey, the inboard of hollow slot is provided with the air flow section of thick bamboo, a plurality of openings have been seted up to the inboard of air flow section of thick bamboo, the front end of thick bamboo is fixedly provided with the ring, the inboard fixedly provided with the mount of ring, the rear end of air flow section of thick bamboo is fixedly provided with screwed joint, the outside of air flow section of thick bamboo is fixedly overlapped with first sound cotton.

Preferably, the hollow groove is adapted to be inserted into the air flow cylinder and the first sound absorbing cotton, and the air flow cylinder, the circular ring and the threaded joint are of an integrated structure.

Preferably, the circular ring is matched with the groove, and the fixing frame is in a cross shape.

Preferably, the threaded joint is in threaded connection with the threaded interface, and the first sound-absorbing cotton covers the outer sides of the plurality of groups of openings.

Preferably, a box door is movably arranged on one side of the auxiliary shell, second sound absorbing cotton is fixedly arranged on the inner walls and one end of the main shell, the auxiliary shell and the centrifugal fan main body, and four groups of universal wheels are fixedly arranged at the lower ends of the main shell and the auxiliary shell.

Preferably, the four groups of universal wheels are respectively positioned at the corners of the periphery of the main shell and the auxiliary shell.

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

1. through rotating corresponding mount, drive screwed connection's screwed joint and screwed connection separately, unscrew, alright take out the wind flow section of thick bamboo and handle, need not dismantle whole amortization mechanism, only need with the wind flow section of thick bamboo of handling or change, the first inboard of inhaling the cotton insertion hollow groove of sound screw up, be convenient for maintain fast, change, operation such as clearance.

2. Through the fixed chamber door that sets up on main shell, auxiliary shell, the chamber door inner wall, can absorb the holistic noise of sending of centrifugal fan main part and fall the noise, improve holistic purpose of falling the noise, the inconvenience that noise pollution brought is reduced.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a centrifugal fan with noise reduction function according to the present utility model;

FIG. 2 is a schematic view of a part of a centrifugal fan with noise reduction function according to the present utility model;

FIG. 3 is a schematic diagram of the internal structure of a silencing mechanism of a centrifugal fan with silencing function according to the present utility model;

fig. 4 is a schematic view of a partially opened structure of a silencing mechanism of a centrifugal fan with a silencing function according to the present utility model.

In the figure: 1. a main housing; 2. a sub-housing; 3. a centrifugal fan main body; 4. a silencing mechanism; 41. a fixed plate; 42. a sound deadening cylinder; 43. a bolt; 44. a hollow groove; 45. a groove; 46. a threaded interface; 47. a wind flow cylinder; 48. an opening; 49. a circular ring; 410. a fixing frame; 411. a threaded joint; 412. a first sound absorbing cotton; 5. a door; 6. a second sound-absorbing cotton; 7. and a universal wheel.

Detailed Description

The utility model is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.

As shown in fig. 1-4, a centrifugal fan with silencing function includes a main casing 1, a sub casing 2 is fixedly installed on one side of the main casing 1, a centrifugal fan main body 3 is fixedly installed on the inner side of the main casing 1 and the sub casing 2, a silencing mechanism 4 is installed at the front end of an air outlet pipe of the centrifugal fan main body 3, the silencing mechanism 4 includes a fixed disc 41 arranged on the front side of the air outlet pipe of the centrifugal fan main body 3, a silencing cylinder 42 is fixedly arranged at the front end of the fixed disc 41, a plurality of groups of bolts 43 are connected between the fixed disc 41 and the air outlet pipe of the centrifugal fan main body 3 in a threaded manner, a plurality of groups of hollow grooves 44 are formed in the inner side of the silencing cylinder 42, a groove 45 is formed in the front side of the hollow grooves 44, a threaded interface 46 is formed in the rear side of the hollow grooves 44, an air flow cylinder 47 is formed in the inner side of the hollow grooves 44, a plurality of groups of openings 48 are formed in the inner side of the air flow cylinder 47, a circular ring 49 is fixedly arranged at the front end of the air flow cylinder 47, a fixed mount 410 is fixedly arranged on the inner side of the circular ring 49, a threaded joint 411 is fixedly arranged at the rear end of the air flow cylinder 47, and a first sound absorbing cotton 412 is fixedly sleeved on the outer side of the air flow cylinder 47.

In this embodiment, the hollow slot 44 is adapted to be inserted into the airflow tube 47 and the first sound absorbing cotton 412, the airflow tube 47, the ring 49 and the threaded connector 411 are in an integral structure, the ring 49 is adapted to the groove 45, the fixing frame 410 is in a cross shape, the threaded connector 411 is in threaded connection with the threaded connector 46, and the first sound absorbing cotton 412 covers the outer sides of the plurality of groups of openings 48.

Specifically, through the use of a plurality of bolt 43, install the combination with the air outlet of centrifugal fan main part 3 with the amortization mechanism 4 whole, make centrifugal fan main part 3 exhaust air current get into the inside of wind flow section of thick bamboo 47 respectively and flow outside again, and the noise that the air current produced when passing through, absorb through opening 48 and the first sound cotton 412 that inhales that the first sound cotton 412 wraps up, the noise that realizes when the air current was discharged is absorbed, noise reduction treatment "be present fan silencer technical structure", and after long-term use, a large amount of dust or first sound cotton 412 that inhales is in the impact cause damage in wind flow section of thick bamboo 47 inside, the accessible rotates corresponding mount 410, drive screwed joint 411 and screwed off of screwed connection, alright take wind flow section of thick bamboo 47 out and handle, need not dismantle whole amortization mechanism 4, only need with the wind flow section of thick bamboo 47 that handles or change, first clearance cotton 412 inserts the inboard of hollow groove 44 and screw up, be convenient for operation such as maintain fast, change, inhale sound.

In this embodiment, a box door 5 is movably disposed on one side of the auxiliary housing 2, and second sound absorbing cotton 6 is fixedly disposed on inner walls and one end of the main housing 1, the auxiliary housing 2, and the centrifugal fan main body 3, four sets of universal wheels 7 are fixedly disposed at lower ends of the main housing 1 and the auxiliary housing 2, and the four sets of universal wheels 7 are respectively disposed at corners around the main housing 1 and the auxiliary housing 2.

Specifically, through fixed chamber door 5 that sets up on main casing 1, vice shell 2, the chamber door 5 inner wall, can absorb, fall the noise of centrifugal fan main part 3 holistic sending, improve holistic purpose of making an uproar that falls, the inconvenience that noise pollution brought is reduced, and convenient whole removal or transport are carried through four sets of universal wheels 7.

Working principle:

during the use, firstly through the use of a plurality of bolt 43 of group, install the combination with the air outlet of noise reduction mechanism 4 whole and centrifugal fan main part 3, make centrifugal fan main part 3 exhaust air current get into the inside of wind flow section of thick bamboo 47 respectively and flow outside again, and the noise that the air current produced when passing through, absorb through opening 48 and the first cotton 412 of inhaling that inhale that the cotton 412 wraps up, the noise that realizes when the air current was discharged is absorbed, noise reduction handles "for current fan muffler technical structure", and after long-term use, a large amount of dust or first inhale that the cotton 412 is in the impact causes the damage, the accessible rotates corresponding mount 410, drive screwed joint 411 and screwed off, alright take out wind flow section of thick bamboo 47 and handle, need not dismantle whole noise reduction mechanism 4, only need with the wind flow section of thick bamboo 47 that handles or change, first inhale the cotton 412 and insert the inboard of hollow slot 44 and twist, be convenient for operation such as quick maintenance, change, the noise reduction handle, in addition through main casing 1, vice shell 2, the fixed setting up on the inner wall 5 of the inner wall of chamber door 5, the whole noise reduction mechanism that can be carried out by the whole noise reduction mechanism 7 of moving the whole, the noise reduction mechanism is carried out by the noise reduction of the whole, the noise reduction mechanism is convenient, the whole is carried out, the noise reduction of the whole can be carried out by the noise reduction of the whole door 7.

The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. Centrifugal fan with amortization function, including main casing (1), its characterized in that: one side of the main shell (1) is fixedly provided with the auxiliary shell (2), a centrifugal fan main body (3) is fixedly arranged on the inner side of the main shell (1) and the auxiliary shell (2), a silencing mechanism (4) is arranged at the front end of an air outlet pipe of the centrifugal fan main body (3), the silencing mechanism (4) comprises a fixed disc (41) arranged on the front side of the air outlet pipe of the centrifugal fan main body (3), a silencing cylinder (42) is fixedly arranged at the front end of the fixed disc (41), a plurality of groups of bolts (43) are connected between the fixed disc (41) and the air outlet pipe of the centrifugal fan main body (3) in a threaded manner, a plurality of groups of hollow grooves (44) are formed in the inner side of the silencing cylinder (42), grooves (45) are formed in the front side of the hollow grooves (44), threaded interfaces (46) are formed in the rear side of the hollow grooves (44), a plurality of groups of openings (48) are formed in the inner side of the air flow cylinder (47), a plurality of groups of rings (49) are fixedly arranged at the front end of the air flow cylinder (47), a plurality of rings (49) are fixedly arranged at the inner sides of the air flow cylinder (47), a plurality of rings (49) are fixedly arranged at the inner ends of the fixed rings (410), the outside of the wind flow cylinder (47) is fixedly sleeved with first sound absorbing cotton (412).

2. The centrifugal fan with a silencing function according to claim 1, wherein: the hollow groove (44) is adapted to be inserted into the air flow cylinder (47) and the first sound absorbing cotton (412), and the air flow cylinder (47), the circular ring (49) and the threaded joint (411) are of an integrated structure.

3. The centrifugal fan with a silencing function according to claim 1, wherein: the circular ring (49) is matched with the groove (45), and the fixing frame (410) is in a cross shape.

4. The centrifugal fan with a silencing function according to claim 1, wherein: the threaded connector (411) is in threaded connection with the threaded connector (46), and the first sound-absorbing cotton (412) covers the outer sides of the plurality of groups of openings (48).

5. The centrifugal fan with a silencing function according to claim 1, wherein: one side activity of vice shell (2) is provided with chamber door (5), the inner wall and the one end of main shell (1), vice shell (2), centrifugal fan main part (3) are all fixed and are provided with the second and inhale sound cotton (6), the lower extreme fixed mounting of main shell (1), vice shell (2) has four sets of universal wheels (7).

6. The centrifugal fan with the silencing function according to claim 5, wherein: the four groups of universal wheels (7) are respectively positioned at the corners of the periphery of the main shell (1) and the auxiliary shell (2).