CN215764016U - Noise removing device for centrifugal fan - Google Patents

Abstract

The utility model belongs to the field of fans, and particularly discloses a noise removing device for a centrifugal fan, which comprises a base, wherein a main limiting cylinder extends from the corner of the upper end surface of the base, a top column penetrates through the upper end surface of the main limiting cylinder, an installation frame is embedded at the upper end part of the top column, a buffer spring is embedded in the inner bottom surface of the main limiting cylinder, the upper end part of the buffer spring is fixedly connected with the lower end part of the top column, a limiting part is arranged between the installation frame and the base, a lower pull column is installed at a position, close to the middle part, of the upper end surface of the base, and an upper pull column is installed at a position, close to the middle part, of the lower end surface of the installation frame. The utility model can reduce noise pollution and simultaneously can avoid the influence on normal work caused by large-amplitude shaking of the centrifugal fan.

Description

Noise removing device for centrifugal fan

Technical Field

The utility model belongs to the field of fans, and particularly discloses a noise removing device for a centrifugal fan.

Background

The fan is a machine which can increase the gas pressure and discharge the gas by means of the input mechanical energy, and is a driven fluid machine, wherein the centrifugal fan is widely used, however, the existing centrifugal fan can generate vibration in the using process, and further drives the base of the centrifugal fan to collide with the ground due to the vibration force to generate a noise phenomenon, and the noise pollution is large.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention provides a noise removing device for a centrifugal fan to solve the above-mentioned problems.

In order to achieve the purpose, the utility model provides a noise removing device for a centrifugal fan, which comprises a base, wherein a main limiting cylinder extends from the corner of the upper end face of the base, a top column penetrates through the upper end face of the main limiting cylinder, an installation frame is embedded at the upper end part of the top column, a buffer spring is embedded in the inner bottom surface of the main limiting cylinder, the upper end part of the buffer spring is fixedly connected with the lower end part of the top column, a limiting part is arranged between the installation frame and the base, a lower pull column is installed at the position, close to the middle part, of the upper end face of the base, an upper pull column is installed at the position, close to the middle part, of the lower end face of the installation frame, a tension spring is arranged between the lower pull column and the upper pull column, and a rubber pad is arranged at the lower end face of the base.

In the above technical solution, preferably, a fixing plate extends from a position of the upper end surface of the base, the position being close to the middle part, and an end of the fixing plate is fixedly connected with the lower end surface of the pull-down column.

Preferably, the limiting piece comprises a secondary limiting cylinder extending in the middle of the upper end face of the base, and the middle of the lower end face of the mounting frame extends with a limiting column.

Preferably, the limiting column is attached to the inside of the auxiliary limiting cylinder, and a rubber sleeve is arranged on the outer surface of the limiting column.

Preferably, a fixed inclined frame obliquely extends from the side of the lower end surface limiting column of the mounting frame, and the end part of the fixed inclined frame is fixedly connected with the end part of the pull-up column.

Preferably, the upper edge of the inner outer surface of the main limiting cylinder is provided with a rubber ring, and the top column is attached to the inner outer surface of the rubber ring.

Compared with the prior art, the utility model has the following beneficial effects: through the buffer spring who sets up, can cushion centrifugal fan at the vibrations that the during operation produced, and reduce base and ground resonance and rubber circle under the effect of rubber pad, the effect of rubber sleeve reduces the resonance between fore-set and main restriction section of thick bamboo and restriction post and the vice restriction section of thick bamboo, with this avoid base and ground collision and the phenomenon of noise, the effectual noise pollution that has reduced, simultaneously under the taut effect of extension spring, can make buffer spring be in the tensioning condition, in order to avoid the mounting bracket phenomenon of rocking by a wide margin to appear, and can further restrict the mounting bracket under the effect between fore-set and main restriction section of thick bamboo and restriction post and the vice restriction section of thick bamboo, with this avoid centrifugal fan to appear rocking by a wide margin and influence normal work.

Drawings

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

FIG. 2 is a cross-sectional view of the primary restraint canister of the present invention;

fig. 3 is a schematic view of the tension spring of the present invention.

In the figure: 1. a base; 2. a main restraining cylinder; 3. a mounting frame; 4. a restraining post; 5. a secondary containment drum; 6. a tension spring; 7. a top pillar; 8. a rubber ring; 9. a buffer spring; 10. a rubber pad; 11. fixing the inclined frame; 12. pulling up the column; 13. a fixing plate; 14. and pulling the column downwards.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the utility model will be rendered by reference to the appended drawings.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and thus the present invention is not limited to the specific embodiments disclosed below.

As shown in fig. 1-3 a noise removing device for centrifugal fan, including base 1, base 1's up end corner extends has main restriction section of thick bamboo 2, the up end of main restriction section of thick bamboo 2 runs through and installs fore-set 7, the inside surface top edge department of main restriction section of thick bamboo 2 is provided with rubber circle 8, fore-set 7 laminates in the inside surface of rubber circle 8, the upper end of fore-set 7 is inlayed and is had mounting bracket 3, the inside bottom surface of main restriction section of thick bamboo 2 is inlayed and is had buffer spring 9, can restrict mounting bracket 3 through the cooperation between the main restriction section of thick bamboo 2 that sets up and the fore-set 7, rock the phenomenon about avoiding appearing, rubber circle 8 can avoid appearing resonance phenomenon between main restriction section of thick bamboo 2 and the fore-set 7.

The upper end of the buffer spring 9 is fixedly connected with the lower end of the top column 7, a limiting part is arranged between the mounting frame 3 and the base 1, the limiting part comprises an auxiliary limiting cylinder 5 extending in the middle of the upper end face of the base 1, a limiting column 4 extends in the middle of the lower end face of the mounting frame 3, the limiting column 4 is attached to the inside of the auxiliary limiting cylinder 5, the outer surface of the limiting column 4 is provided with a rubber sleeve, a pull-down column 14 is arranged at the position, close to the middle, of the upper end face of the base 1, a fixing plate 13 extends at the position, close to the middle, of the upper end face of the base 1, can cushion the vibrations power through the buffer spring 9 that sets up, the phenomenon of rocking about can further avoiding the mounting bracket 3 to appear in the cooperation between vice restriction section of thick bamboo 5 and the restriction post 4, the rubber sleeve can avoid the resonance phenomenon between vice restriction section of thick bamboo 5 and the restriction post 4, and fixed plate 13 plays and carries out the effect of fixing to pull-down post 14.

The tip of fixed plate 13 and the lower terminal surface fixed connection of pulldown post 14, the position that the lower terminal surface of mounting bracket 3 is close to the middle part is installed and is drawn post 12, the side slope of the lower terminal surface restriction post 4 of mounting bracket 3 extends there is fixed sloping 11, the tip of fixed sloping 11 and the tip fixed connection of pullup post 12, be provided with extension spring 6 between pulldown post 14 and the pullup post 12, the lower terminal surface of base 1 is provided with rubber pad 10, can fix pullup post 12 through the fixed sloping 11 that sets up, pullup post 12 and pulldown post 14 play the effect of connecting, extension spring 6 can produce the tightening force and be in the tensioning state in order to order about buffer spring 9, in order to avoid mounting bracket 3 to appear rocking phenomenon by a wide margin.

When in use, the centrifugal fan is fixed on the mounting frame 3, the vibration generated by the centrifugal fan during working can be transmitted to the buffer spring 9 through the top column 7 so as to buffer the vibration force through the buffer spring 9, meanwhile, the resonance between the base 1 and the ground is reduced under the action of the rubber gasket 10, the resonance between the top column 7 and the main limiting cylinder 2 and the resonance between the limiting column 4 and the auxiliary limiting cylinder 5 are reduced under the action of the rubber ring 8 and the rubber sleeve, thereby avoiding the noise generated by the collision of the base 1 and the ground, and under the tensioning action of the tension spring 6, the buffer spring 9 can be in a tensioning state, in order to avoid mounting bracket 3 to appear rocking phenomenon by a wide margin to can further restrict mounting bracket 3 under the effect between a post 7 and main restriction section of thick bamboo 2 and restriction post 4 and the vice restriction section of thick bamboo 5, with this avoid centrifugal fan to appear rocking by a wide margin and influence normal work.

In the present invention, the terms "mounting," "connecting," "fixing," and the like are used in a broad sense, for example, "connecting" may be a fixed connection, a detachable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description herein, the appearances of the phrases "one embodiment," "some embodiments," "a specific embodiment," or the like, in various places throughout this specification are not necessarily all referring to the same embodiment or example, but rather to the same embodiment or example. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the utility model, but that various changes and modifications may be made without departing from the spirit and scope of the utility model, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (6)

1. The utility model provides a noise control device for centrifugal fan, its characterized in that, includes base (1), the upper end corner of base (1) extends and has main restriction section of thick bamboo (2), the up end of main restriction section of thick bamboo (2) runs through and installs fore-set (7), the upper end of fore-set (7) is inlayed and is had mounting bracket (3), the inside bottom surface of main restriction section of thick bamboo (2) is inlayed and is had buffer spring (9), the upper end of buffer spring (9) and the lower tip fixed connection of fore-set (7), be provided with the restriction piece between mounting bracket (3) and base (1), the position that the up end of base (1) is close to the middle part is installed down-guy post (14), the position that the lower end of mounting bracket (3) is close to the middle part is installed up-guy post (12), be provided with extension spring (6) between down-guy post (14) and the up-guy post (12), the lower end face of the base (1) is provided with a rubber pad (10).

2. The noise removing device for the centrifugal fan is characterized in that a fixing plate (13) extends from the upper end surface of the base (1) near the middle part, and the end part of the fixing plate (13) is fixedly connected with the lower end surface of the pull-down column (14).

3. A noise-abatement device for a centrifugal fan according to claim 1, wherein the restriction comprises a secondary restriction cylinder (5) extending in the middle of the upper end face of the base (1), and a restriction post (4) extending in the middle of the lower end face of the mounting bracket (3).

4. A noise removing device for a centrifugal fan according to claim 3, characterized in that the limiting column (4) is fitted inside the secondary limiting cylinder (5), and the outer surface of the limiting column (4) is provided with a rubber sleeve.

5. The noise removing device for the centrifugal fan is characterized in that a fixing inclined frame (11) obliquely extends from the side of the lower end surface limiting column (4) of the mounting frame (3), and the end part of the fixing inclined frame (11) is fixedly connected with the end part of the pull-up column (12).

6. Noise-abatement device for centrifugal fans according to claim 1, characterized in that the main containment drum (2) is provided at its upper edge of its inner outer surface with a rubber ring (8), the top pillar (7) being conformed to the inner outer surface of the rubber ring (8).

Images