CN212130906U - A plant fan motor noise control device - Google Patents

Abstract

The utility model relates to the technical field of noise control, and discloses a noise control device for a fan motor in a factory area, which solves the problem of a large amount of noise pollution generated by a fan motor in the factory area of a cement enterprise at present. In the utility model, the outer casing and the inner casing form a sound-absorbing and sound-insulating cover under the connection of the connecting rod to cover the fan motor, and the sound noise generated by the fan enters the sound-absorbing cavity. Under the action of the two arc-shaped plates, the noise is reflected in multiple stages after passing through the through holes, and then weakened. At the same time, the glass wool plate will absorb the weakened noise again, which can play a good noise reduction effect and avoid noise pollution. Personnel are harmed; through the setting of the noise reduction buffer mechanism, the vibration force generated by the fan motor is buffered under the reaction force of the rubber column and the spring, and the noise generated by the vibration can be absorbed by the rubber column, which can further reduce the generation of noise.

Description

A plant fan motor noise control device

technical field

The utility model belongs to the technical field of noise control, in particular to a noise control device for a fan motor in a factory area.

Background technique

When cement enterprises are producing and processing cement, various fans and motors in the factory area will generate a lot of noise during operation, which makes the environmental noise emission of the factory area seriously exceed the standard of Class II area stipulated by the state, and affects the work and operation of residents and units around the factory area. rest.

Noise not only damages the human auditory system, but working in a high-noise environment for a long time will cause occupational deafness, lead to tympanic membrane hemorrhage, and even cause diseases such as nervous system and autonomic dysfunction. Therefore, it is necessary to design a fan in the factory area. Motor noise control device.

SUMMARY OF THE INVENTION

Aiming at the above situation, in order to overcome the defects of the prior art, the utility model provides a noise control device for the fan motor in the factory area, which effectively solves the problem of a large amount of noise pollution generated by the fan motor in the factory area of the cement enterprise at present.

In order to achieve the above purpose, the utility model provides the following technical solutions: a noise control device for a fan motor in a factory area, comprising a bottom plate, an outer casing is connected to the upper end of the bottom plate, an inner casing is connected inside the outer casing through a connecting rod, and the inner casing and A sound-absorbing cavity is opened between the outer casings. The interior of the sound-absorbing cavity is connected with a glass wool plate relative to the inner wall of the outer casing. One side of the glass wool plate is connected with a first arc plate relative to the two connecting rods. The second arc-shaped plate is symmetrically connected, and the surfaces of the first arc-shaped plate and the second arc-shaped plate are evenly provided with through holes. There is a forced exhaust muffler. The upper end of the bottom plate is connected with a mounting plate through a noise reduction buffer mechanism. The noise reduction buffer mechanism includes a base, a cylinder, a rubber column, a buffer column, a top plate and a spring. The upper end of the base is connected with a cylinder, and the inner center of the cylinder is connected There is a rubber column, the upper end of the rubber column is connected with a buffer column, the upper end of the buffer column is connected with a top plate, and the lower end of the buffer column is connected with a spring relative to the outside of the rubber column.

Preferably, the lower end of the outer casing is folded outward with a folded edge, and the upper end of the folded edge is provided with a fixing hole for convenient connection.

Preferably, the folded edge is fixedly connected to the bottom plate through the fixing hole through a bolt.

Preferably, the inner wall of the inner casing is evenly provided with sound-absorbing holes, and the sound-absorbing holes are in the shape of a horn.

Preferably, limit blocks are connected on both sides of the lower end of the buffer column, and a chute is connected outside the limit blocks relative to the inner wall of the cylinder.

Preferably, a damping material is coated on the outside of the outer casing.

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

(1) In this utility model, the outer casing, the inner casing, the sound-absorbing cavity, the glass wool plate, the first arc-shaped plate and the second arc-shaped plate are arranged, and the outer casing and the inner casing are connected by connecting rods to form a The sound-absorbing and insulating cover covers the fan motor, and the sound and noise generated by it enters the sound-absorbing cavity. At the same time, the glass wool board will absorb the weakened noise again, which can play a good noise reduction effect and avoid the harm of noise pollution to personnel;

(2) Through the setting of the noise reduction buffer mechanism, the vibration force generated by the fan motor is transmitted downward by the mounting plate, so that the top plate drives the buffer column to move downward. At this time, the rubber column and the spring are compressed by force, and under the reaction force, The rubber column and spring can buffer, and the noise generated by the vibration can be absorbed by the rubber column, which can further reduce the noise generation.

Description of drawings

The accompanying drawings are used to provide a further understanding of the present invention, and constitute a part of the specification, and are used to explain the present invention together with the embodiments of the present invention, and do not constitute a limitation to the present invention.

In the attached image:

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the structural representation of the noise reduction buffer mechanism of the utility model;

Fig. 3 is the enlarged structural representation of A of Fig. 1 of the utility model;

In the figure: 1. Bottom plate; 2. Outer casing; 3. Connecting rod; 4. Inner casing; 5. Sound-absorbing cavity; 6. Glass wool board; 7. First arc-shaped plate; 8. Second arc-shaped plate; 9. Through hole; 10. Inlet muffler; 11. Outlet muffler; 12. Forced exhaust muffler; 13. Noise reduction buffer mechanism; 14. Mounting plate; 15. Base; 16. Cylinder body; 17. Rubber column; 18, buffer column; 19, top plate; 20, spring; 21, hemming; 22, bolt; 23, sound-absorbing hole; 24, limit block; 25, chute.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. For example; based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

Embodiment 1, as shown in Figure 1, Figure 2 and Figure 3, the present invention includes a base plate 1, an outer casing 2 is connected to the upper end of the base plate 1, and an inner casing 4 is connected inside the outer casing 2 through a connecting rod 3, and the outer casing 4 is connected through the outer casing. 2 and the inner shell 4 are connected by the connecting rod 3 to form a sound-absorbing and insulating cover, a sound-absorbing cavity 5 is opened between the inner shell 4 and the outer shell 2, and the interior of the sound-absorbing cavity 5 is connected to the inner wall of the outer shell 2 with a glass. The cotton plate 6 is used for absorbing noise. One side of the glass wool plate 6 is connected with a first arc-shaped plate 7 relative to the two connecting rods 3, and one end of the first arc-shaped plate 7 is symmetrically connected with a second arc-shaped plate 8. The surfaces of the first arc-shaped plate 7 and the second arc-shaped plate 8 are evenly provided with through holes 9, and the noise reflection can be gradually reduced through the first arc-shaped plate 7 and the second arc-shaped plate 8, and one end of the outer casing 2 is connected with an air inlet. The muffler 10 is used to attenuate the noise at the inlet end, the outlet muffler 11 is connected to the other end of the outer casing 2 to attenuate the noise at the outlet end, and the top of the outer casing 2 is connected with a forced exhaust muffler 12 for exhausting the hot air The end noise is weakened. The upper end of the bottom plate 1 is connected with a mounting plate 14 through a noise reduction buffer mechanism 13. The noise reduction buffer mechanism 13 includes a base 15, a cylinder 16, a rubber column 17, a buffer column 18, a top plate 19 and a spring 20, and the upper end of the base 15 is connected There is a cylindrical body 16, and a rubber column 17 is connected to the inner center of the cylindrical body 16, which is used to buffer the vibration force and reduce the vibration noise. A spring 20 is externally connected to the rubber column 17, and cooperates with the rubber column 17 to jointly buffer vibration.

In the second embodiment, on the basis of the first embodiment, the lower end of the outer casing 2 is folded outward to have a folded edge 21, and the upper end of the folded edge 21 is provided with a fixing hole for convenient connection, which is convenient for installation.

In the third embodiment, on the basis of the first embodiment, the folded edge 21 is fixedly connected to the bottom plate 1 through the fixing hole through the bolt 22, so as to facilitate the fixed installation of the outer casing 2.

Embodiment 4, on the basis of Embodiment 1, the inner wall of the inner casing 4 is evenly provided with sound-absorbing holes 23 , and the sound-absorbing holes 23 are horn-shaped, which is convenient for absorbing the noise generated by the fan motor operation into the sound-absorbing cavity 5 .

Embodiment 5, on the basis of Embodiment 1, both sides of the lower end of the buffer column 18 are connected with limit blocks 24, and the outside of the limit block 24 is connected with a chute 25 relative to the inner wall of the cylinder 16, and the limit block 24 is connected to the chute. 25, which can ensure the vertical movement of the noise reduction buffer mechanism 13.

In the sixth embodiment, on the basis of the first embodiment, the outer casing 2 is coated with a damping material, which can convert the kinetic energy of the sound insulation member into thermal energy, thereby reducing the vibration of the member.

Working principle: When in use, install the fan motor on the mounting plate 14 on the base plate 1, and then place the cover formed by the outer casing 2 and the inner casing 4 on the upper end of the base plate 1 to cover the fan motor, and the fan motor works. When the vibration force acts on the mounting plate 14 and transmits downward, the top plate 19 drives the buffer column 18 to move downward. At this time, the rubber column 17 and the spring 20 are compressed by force. Under the reaction force, the rubber column 17 and the spring 20 It can buffer, and the rubber column 17 can absorb vibration noise and reduce the generation of noise. The sound noise generated by the work enters the sound-absorbing cavity 5 through the sound-absorbing hole 23 on the inner shell 4. Under the action of the arc-shaped plate 8, the noise is reflected in multiple stages after passing through the through hole 9, and then attenuated. Hazard to plant personnel.

It should be noted that, in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any relationship between these entities or operations. any such actual relationship or sequence exists. Moreover, the terms "comprising", "comprising" or any other variation thereof are intended to encompass non-exclusive inclusion such that a process, method, article or device comprising a list of elements includes not only those elements, but also includes not explicitly listed or other elements inherent to such a process, method, article or apparatus.

Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes and modifications can be made to these embodiments without departing from the principles and spirit of the present invention , alternatives and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (6)

1. The utility model provides a factory fan motor noise treatment device, includes bottom plate (1), its characterized in that: the air-conditioning sound absorber is characterized in that the upper end of the bottom plate (1) is connected with an outer shell (2), the inner part of the outer shell (2) is connected with an inner shell (4) through connecting rods (3), a sound absorbing cavity (5) is formed between the inner shell (4) and the outer shell (2), the inner part of the sound absorbing cavity (5) is connected with a glass wool board (6) relative to the inner wall of the outer shell (2), one side of the glass wool board (6) is connected with a first arc-shaped board (7) relative to the space between the two connecting rods (3), one end of the first arc-shaped board (7) is symmetrically connected with a second arc-shaped board (8), through holes (9) are uniformly formed in the surfaces of the first arc-shaped board (7) and the second arc-shaped board (8), one end of the outer shell (2) is connected with an air inlet silencer (10), the other end of the outer shell, noise reduction buffer gear (13) include base (15), barrel (16), rubber column (17), cushion column (18), roof (19) and spring (20), base (15) upper end is connected with barrel (16), the inside central authorities of barrel (16) are connected with rubber column (17), rubber column (17) upper end is connected with cushion column (18), cushion column (18) upper end is connected with roof (19), cushion column (18) lower extreme has spring (20) for rubber column (17) external connection.

2. The factory fan motor noise abatement device of claim 1, wherein: the lower end of the outer shell (2) is outwards folded with a folded edge (21), and the upper end of the folded edge (21) is provided with a fixing hole convenient for connection.

3. The factory fan motor noise abatement device of claim 2, wherein: the folded edge (21) penetrates through the fixing hole through a bolt (22) and is fixedly connected with the bottom plate (1).

4. The factory fan motor noise abatement device of claim 1, wherein: the inner wall of the inner shell (4) is uniformly provided with sound absorption holes (23), and the sound absorption holes (23) are trumpet-shaped.

5. The factory fan motor noise abatement device of claim 1, wherein: buffer column (18) lower extreme both sides all are connected with stopper (24), and stopper (24) outside is connected with spout (25) for barrel (16) inner wall.

6. The factory fan motor noise abatement device of claim 1, wherein: and a damping material is coated outside the outer shell (2).

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