CN210387792U

CN210387792U - Noise silencer

Info

Publication number: CN210387792U
Application number: CN201822139099.XU
Authority: CN
Inventors: 朱运权
Original assignee: Jiangxi Zhongan Occupational Hazard Evaluation And Testing Co
Current assignee: Jiangxi Zhongan Occupational Hazard Evaluation And Testing Co
Priority date: 2018-12-18
Filing date: 2018-12-18
Publication date: 2020-04-24
Anticipated expiration: 2028-12-18

Abstract

The utility model belongs to the auxiliary assembly of machine-building discloses a silencer, be in including support frame and setting noise elimination chamber on the support frame, noise elimination chamber is detained through bottom plate and cover shell on the bottom plate encloses to close and forms, noise elimination chamber's one end still is provided with movably lid and closes the end cover of noise elimination chamber port, the other end still outwards extend and are provided with a noise elimination section of thick bamboo, wherein, bottom plate, shell, end cover and noise elimination section of thick bamboo be the noise elimination board. The utility model is suitable for eliminating or reducing the noise of sound producing equipment such as a cutting machine and the like; can set up sound generating mechanism such as cutting machine in the amortization chamber, switch sets up outside the amortization chamber, and at the in-process of use, will wait to cut the piece centre gripping back on the cutting machine, can close the upper end cover, then open switch, carry out cutting work. At the moment, the noise generated by the cutting machine is absorbed by the sound-deadening plate, so that the harsh feeling of the noise can be greatly reduced, and the physical and psychological health of cutting operators is facilitated.

Description

Noise silencer

Technical Field

The utility model relates to a machine-building auxiliary assembly specifically relates to a silencer.

Background

Noise pollution, air pollution and water pollution constitute three major pollution sources today. If people work under 104dB noise environment, deaf workers with different degrees account for 32 percent, and the incidence rates of heart diseases, hypertension and neurasthenia are several times higher than that of common workshop workers. The noise seriously pollutes the environment and becomes one of the main public hazards endangering the health of people. The GBJ87-85 regulation in China: 8 hours of operation, the noise limit is 90 dB. The noise hygiene standards in developed countries are more stringent.

The cutting machine is a mechanical rough machining machine which is commonly used at present, however, the machine has a great disadvantage that harsh noise can be generated during cutting, the physical health of production workers is seriously harmed, although a silencing hole or a silencing slit is designed on a base body of the saw blade, and a flexible gasket is additionally arranged at the joint part of the saw blade and the cutting machine, so that the transmission of sound waves generated by friction and impact on the base body is damped, audio resonance is reduced, a part of noise can be reduced, but the safety standard cannot be achieved.

Therefore, how to reduce the noise emitted by the cutting machine so as to be beneficial to the health of production workers is a technical problem to be solved at present.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a silencer which is suitable for eliminating or reducing the noise of sound generating equipment such as a cutting machine and the like; can set up sound generating mechanism such as cutting machine in the amortization chamber, switch sets up outside the amortization chamber, and at the in-process of use, will wait to cut the piece centre gripping back on the cutting machine, can close the upper end cover, then open switch, carry out cutting work. At the moment, the noise generated by the cutting machine is absorbed by the sound-deadening plate, so that the harsh feeling of the noise can be greatly reduced, and the physical and psychological health of cutting operators is facilitated.

In order to achieve the purpose, the utility model provides a silencer, be in including support frame and setting noise elimination chamber on the support frame, noise elimination chamber is detained through bottom plate and cover shell on the bottom plate is enclosed and is closed and form, noise elimination chamber's one end still is provided with movably lid and closes the end cover of noise elimination chamber port, the other end still outwards extend and are provided with a noise elimination section of thick bamboo, wherein, bottom plate, shell, end cover and noise elimination section of thick bamboo be the noise elimination board.

Preferably, the sound-absorbing plate comprises a porous metal plate, a glass fiber sound-absorbing cotton layer, a polyester fiber sound-absorbing cotton layer and a metal plate layer which are arranged in sequence from inside to outside.

Preferably, the pore size of the porous metal plate is not greater than mm.

Preferably, a plurality of fixing clips capable of fixing the sound generating device are further arranged on the bottom plate.

Preferably, the clamping surfaces of the fixing clamp, which are in contact with the sound generating device, are provided with cushion pads.

Preferably, a dust exhaust fan is further arranged at one end, close to the silencing cavity, of the silencing barrel.

Preferably, a dust collection bag is further arranged at one end of the silencing barrel, which is far away from the silencing cavity.

Preferably, the lower edge of the end cap is coupled to the bottom plate, and the end cap is movably connected to the housing by a snap.

Preferably, a rubber pad is arranged on the end face of the shell, which is in contact with the end cover.

Preferably, the support frame comprises a plurality of supporting feet, and soft pads are arranged at the bottoms of the supporting feet.

In the technical scheme, the silencer comprises a support frame and a silencing cavity arranged on the support frame, the silencing cavity is formed by enclosing a bottom plate and a cover on a shell on the bottom plate, one end of the silencing cavity is further provided with an end cover movably covering a port of the silencing cavity, the other end of the silencing cavity extends outwards to be provided with a silencing tube, and the bottom plate, the shell, the end cover and the silencing tube are silencing plates. Like this, sound generating mechanism such as cutting machine can set up in the anechoic chamber, and switch sets up outside the anechoic chamber, and at the in-process of use, will wait to cut the piece centre gripping back on the cutting machine, can close the end cover, then open switch, carry out cutting work. At the moment, the noise generated by the cutting machine is absorbed by the sound-deadening plate, so that the harsh feeling of the noise can be greatly reduced, and the physical and psychological health of cutting operators is facilitated.

Other features and advantages of the present invention will be described in detail in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic structural view of a muffler;

FIG. 2 is a schematic cross-sectional view of an acoustical panel;

fig. 3 is a schematic top view of an acoustic panel.

Description of the reference numerals

1 support frame 2 anechoic chamber

3 bottom plate 4 outer shell

5 end cover 6 silencing pot

7 porous metal plate 8 glass fiber noise reduction cotton layer

9 polyester fiber sound-deadening cotton layer 10 metal plate layer

11 fixation clamp 12 dust collection bag

13 rubber pad

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.

In the present invention, unless otherwise specified, the terms "upper, lower, inner, outer, bottom" and the like included in the terms "upper", "lower", "inner", "outer", "bottom" and the like are used merely to indicate the orientation of the terms in a conventional use state or are colloquially known by those skilled in the art, and should not be construed as limiting the terms.

As shown in fig. 1, fig. 2 and fig. 3, the utility model provides a silencer, be in including support frame 1 and setting muffling chamber 2 on the support frame 1, muffling chamber 2 is detained through bottom plate 3 and cover shell 4 on the bottom plate 3 is enclosed and is closed and form, muffling chamber 2's one end still is provided with movably lid and closes the end cover 5 of muffling chamber 2 port, the other end still outwards extends and is provided with muffling barrel 6, wherein, bottom plate 3, shell 4, end cover 5 and muffling barrel 6 are the muffling board.

In the above technical scheme, this silencer includes support frame 1 and sets up anechoic chamber 2 on the support frame 1, anechoic chamber 2 is detained through bottom plate 3 and cover shell 4 on the bottom plate 3 encloses to close and forms, the one end in anechoic chamber 2 still is provided with movably lid and closes end cover 5 of 2 ports in anechoic chamber, and the other end still outwards extends and is provided with anechoic cylinder 6, wherein, bottom plate 3, shell 4, end cover 5 and anechoic cylinder 6 are the anechoic plate. Like this, sound generating mechanism such as cutting machine can set up in anechoic chamber 2, and switch sets up outside anechoic chamber 2, and in the in-process of using, will wait to cut the piece centre gripping back on the cutting machine, can close upper end cover 5, then opens switch, carries out cutting work. At the moment, the noise generated by the cutting machine is absorbed by the sound-deadening plate, so that the harsh feeling of the noise can be greatly reduced, and the physical and psychological health of cutting operators is facilitated.

In the above technical scheme, the sound-absorbing board can adopt various designs, and can be sound-absorbing cotton in the prior art, and can also be fiber cotton and the like. In a preferred embodiment of the present invention, it is considered that a large amount of metal chips are generated during the operation, which is not only high temperature but also unfavorable for cleaning, and therefore the present invention provides a preferred embodiment of the present invention, the noise reduction plate comprises a porous metal plate 7, a glass fiber noise reduction cotton layer 8, a polyester fiber noise reduction cotton layer 9 and a metal plate layer 10, which are sequentially disposed from inside to outside. Like this, the high temperature metal piece that the cutting produced can directly drop on porous metal sheet 7, can not take place to scald the condition of noise elimination material, and porous mechanism combines cotton layer 8 of glass fiber amortization, the cotton layer 9 of polyester fiber amortization, can be with noise greatly reduced.

In a preferred embodiment of the present invention, the pore diameter of the porous metal plate 7 is not more than 3 mm. On the one hand, noise can be absorbed and on the other hand clogging by metal chips is prevented.

In a preferred embodiment of the present invention, the bottom plate 3 is further provided with a plurality of fixing clips 11 capable of fixing the sound generating device. Thus, the fixing clamp 11 can be fixed on the sound generating device, the audio frequency rise caused by the vibration of the sound generating device in the cutting process can be reduced, and the noise is further reduced.

In a preferred embodiment of the present invention, the clamping surface of the fixing clip 11 contacting with the sound generating device is provided with a cushion pad. The audio frequency rising caused by the vibration of the sound generating equipment in the cutting process can be reduced, and the noise is further reduced.

In a preferred embodiment of the present invention, a dust exhaust fan is further provided at one end of the muffling chamber 2 near the muffling cylinder 6. Therefore, the utility model discloses not only can reduce the noise, but also can will cut dust discharge at the cutting in-process, do benefit to the maintenance and the clearance of equipment.

In a preferred embodiment of the present invention, a dust bag 12 is further disposed at one end of the muffling cylinder 6 far away from the muffling chamber 2. Thus, the utility model discloses not only can reduce the noise, but also can will cut dust discharge at the cutting in-process, do benefit to the maintenance and the clearance of equipment, can also further prevent the dust pollution that the atmosphere of dust direct discharge caused.

In a preferred embodiment of the present invention, the lower edge of the end cap 5 is coupled to the bottom plate 3, and the end cap 5 is movably connected to the housing 4 by a buckle. Thus, the device is convenient and flexible.

In a preferred embodiment of the present invention, a rubber pad 13 is disposed on the end surface of the housing 4 contacting the end cap 5. Therefore, the silencing cavity can be effectively sealed, and the noise is prevented from being directly transmitted out.

In a preferred embodiment of the present invention, the support frame 1 comprises a plurality of support legs, and the bottom of each support leg is provided with a cushion. In this way, the problem of raised audio frequency caused by the occurrence of vibrations of the apparatus can be further reduced.

In a preferred embodiment of the present invention, the end cap 2 may be made of a transparent material such as glass or a transparent plastic plate for easy observation.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the details of the above embodiments, and the technical concept of the present invention can be within the scope of the present invention to perform various simple modifications to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.

It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and in order to avoid unnecessary repetition, the present invention does not need to describe any combination of the features.

In addition, various embodiments of the present invention can be combined arbitrarily, and the disclosed content should be regarded as the present invention as long as it does not violate the idea of the present invention.

Claims

1. A silencer is characterized by comprising a support frame (1) and a silencing cavity (2) arranged on the support frame (1), wherein the silencing cavity (2) is formed by enclosing a bottom plate (3) and a shell (4) which is covered and buckled on the bottom plate (3), one end of the silencing cavity (2) is further provided with an end cover (5) which can movably cover the port of the silencing cavity (2), the other end of the silencing cavity is further provided with a silencing tube (6) in an outward extending mode, and the bottom plate (3), the shell (4), the end cover (5) and the silencing tube (6) are silencing plates;

a dust exhaust fan is further arranged at one end, close to the silencing cavity (2), in the silencing barrel (6);

a dust collection bag (12) is also arranged at one end of the silencing barrel (6) far away from the silencing cavity (2);

the sound-absorbing board comprises a porous metal plate (7), a glass fiber sound-absorbing cotton layer (8), a polyester fiber sound-absorbing cotton layer (9) and a metal board layer (10) which are sequentially arranged from inside to outside.

2. A muffler according to claim 1, characterized in that the pore size of the expanded metal sheet (7) is not more than 3 mm.

3. The muffler according to claim 1, characterized in that the bottom plate (3) is further provided with a plurality of fixing clips (11) capable of fixing the sound generating device.

4. A muffler according to claim 3, characterized in that the clamping surfaces of the fixing clip (11) that are in contact with the sound-emitting device are each provided with a cushion.

5. The muffler according to claim 1, characterized in that the lower edge of the end cap (5) is journalled to the base plate (3), and the end cap (5) is movably connected to the housing (4) by a snap fit.

6. The muffler according to claim 5, characterized in that a rubber pad (13) is provided on the end face of the housing (4) that contacts the end cap (5).

7. The muffler according to claim 1, characterized in that the support frame (1) comprises a plurality of support feet, the bottom of which are provided with a cushion.